Combination of evaporator (accumulator) and suction loop for heater radiator (variants)

FIELD: cooling and air conditioning system components, particularly evaporators.

SUBSTANCE: evaporator comprises of the first elongated flat multi-channel pipe having serpentine configuration defined by elbow members bent across the minor dimension thereof. The pipe has a number of spaced apart parallel parts extending between ends of the first pipe. Inlet member of clamping means is connected to the first pipe end, outlet member thereof is fastened to the second end thereof. Ribs are located between neighboring parts of the first pipe. The second elongated flat multi-channel pipe forms suction radiator loop. The second pipe is connected to the first one so that side wall of the second pipe defining major pipe dimension is connected to side wall of the first pipe directly upstream of the outlet member of the clamping means to provide improved heat exchange between the pipes. The second pipe ends are also fitted with inlet and outlet members of clamping means.

EFFECT: increased compactness.

20 cl, 8 dwg

 

This invention relates to heat exchangers, in particular to the combined suction path of the heat exchanger and the evaporator for use in cooling systems.

It is well known that the release of refrigerants into the atmosphere is the main cause of the deterioration of the ozone layer. Although these refrigerants like R134a are less dangerous to the environment than such as refrigerants R12, nevertheless they are also undesirable because they can cause so-called greenhouse effect.

Both refrigerant R12 and R134a used in automobiles, where a very important weight and volume. If the heat exchanger automatic air conditioning will be hard, it hurt fuel economy of the vehicle. Similarly, if the radiator will be lengthy, it will increase not only the weight but also the design of the heat exchanger will be changed by the designer of the car to give aerodynamically slippery shape to save fuel.

The biggest leak of refrigerant into the atmosphere comes from automobile air conditioners, because the compressor cannot be hermetically isolated, as in stationary systems, usually requiring the transfer of power through a drive belt or other transmission from the vehicle engine. Therefore, for in-car use is desirable in order to create such a cooling system, in which part of the refrigerant while and evaporates into the atmosphere, but almost does not harm the environment, and which provides the positive environmental effect of the neutralizing system parts are small and lightweight, to help save fuel.

These considerations lead to the need to consider systems supercritical CO2for possible use in cars. First used as a refrigerant in such systems, CO2initially, there may be effectively extracted from the atmosphere, and if it will leak from the system in which it was used, back into the atmosphere, it will not be a net addition of CO2in the atmosphere. Moreover, although the CO2and undesirable from the point of view of the greenhouse effect, however it does not affect the ozone layer and does not increase the greenhouse effect, because the leakage no net increase in the CO2in the atmosphere. Such systems require the use of the suction path of the heat exchanger to increase the cooling effect of the evaporator, due to the relations of thermodynamic properties. If it is not used, there is an extremely high specific mass flow rate of CO2and higher power capacity and compressor, want to meet the normal stresses encountered in automatic air-conditioning systems. Through the use of the suction path of the heat exchanger mass flow rate of CO2and power consumption of the compressor can be reduced with the hope that can also be achieved by reducing the size of the compressor system. At the same time adding to the suction circuit of the heat exchanger of the car can increase the weight and space of the engine room, usually limited in the standard car. Therefore, there is a real need in vysokochastotnom and highly effective the suction circuit of the heater matrix.

So far the suction path of the heat exchanger is used in a relatively large refrigeration systems in which the refrigerant released from the evaporator, should have been held as vernally vapor in the compressor to ensure that the liquid does not get into the compressor. It is necessary that the compressors are commonly used in refrigeration systems, were absolutely positively replaceable devices. So, if a certain amount of liquid refrigerant, coexisting within a gaseous refrigerant in a saturated state, will be sucked into the compressor, the likely result of this I have designed serious damage and/or loss of the pumping capacity of the compressor.

When placed between the evaporator and the compressor suction path of the heat exchanger eliminates these difficulties by getting a relatively hot, condensed refrigerant from the outlet system of the refrigerator or gas cooler in heat exchange with the refrigerant released from the evaporator. As a result, the stream of the refrigerant leaving the evaporator is heated. The suction path of the heat exchanger shall be of such regulators to flow, eventually passing into the compressor from the suction circuit of the heat exchanger was vernacetin steam with temperature is usually a few degrees above the saturation temperature of the refrigerant at the pressure existing in this point system. The result of the refrigerant in the liquid phase and the compressor will only receive gaseous refrigerant. A typical system of this type is schematically shown in figure 1.

Conventional suction paths of the heat exchanger used in industry for cooling, have a view of the device of concentric circular pipe having considerable length. They are not suitable where there is limited space. Other types of suction circuit of the heat exchanger using a round pipe of large diameter for holding the jet from the outlet of the evaporator to the compressor. This pipe is a "wrapper" round pipe is small the first diameter, which is used to conduct liquid refrigerant from the refrigerator into the expansion device system. This form of heat exchanger is partly better than patterns with concentric circular pipe in which it takes the place of the connecting pipe between the condenser and the expansion device with the high pressure side, and between the evaporator and the condenser-side low pressure, thus saves space. Despite all this, he remains quite large and, therefore, will not be suitable for use in a mobile refrigeration systems, such as automotive air-conditioning.

To achieve compactness, it was proposed to combine the evaporator and the suction path of the heat exchanger in a single unit. An example of such design is shown in U.S. patent No. 5678422, published on 21 October 1997, Joshi and others Proposed the evaporator with the so-called "inverted Cup", which at one end is provided with additional heat exchanger type "inverted Cup", which works as a suction path of the heat exchanger. Although achieved some degree of compactness, adding suction path heat exchanger "inverted Cup" significantly increases the size of the evaporator.

Another note is R. the Association of the suction path radiator heater with evaporator is presented in U.S. patent Datta 5212965, published on 25 may 1993. This patent describes a round pipe and a relatively large evaporator type plate of ribs, but, despite the merger of the suction path radiator heater with evaporator, the reduced size is not reached.

Kritzer in U.S. patent 3274797, published on September 27, 1966, describes a cooling system steam compression, commonly used in refrigeration, including a capillary tube connecting the refrigerator and the evaporator (presumably acting as an expansion device), in cooperation with the suction path of the compressor to achieve heat exchange between them. Kritzer found that the flow rate of refrigerant in the evaporator varies depending on the temperature of the refrigerant in the suction path of the compressor. Although this shows that Critter had a relationship with the heat exchange between the output stream of the evaporator and the input stream from the refrigerator into the expansion device, but this was done in order to achieve flow control and therefore is not a suction path of the heat exchanger in the conventional sense.

Vakil in U.S. patent 4304099, published December 8, 1981, describes something similar to this. Capillary tube attached to the inlet of the condenser, leads to the contact heat exchange with the outer surface of the completion of the evaporator along the entire length up inside of the evaporator. Vakil trying to cool coming from the refrigerator liquid stream of refrigerant in order to prevent the formation there of steam prior to its evaporation, otherwise will be reduced thermodynamic efficiency. As Vakil does not disclose in detail the form of the evaporator cannot be reliably established, is there compactness in the design of Vakil. Therefore, when evaluating the worthiness of the projects and attempts to connect the suction path radiator heater with evaporator, it is seen that a significant reduction in size has not been reached.

The principal object of the invention is to provide a new and improved suction path of the heat exchanger. Specifically the aim of the invention is the provision of an ultra-compact combined evaporator and suction circuit of the heat exchanger. An exemplary embodiment of the inventive achievements in the combined evaporator and suction circuit heat exchanger for use in a refrigeration system includes a first elongated multi-channel flat tube having a larger diameter (greater transverse pipe size), smaller diameter (less transverse pipe size), measured transversely to a larger diameter, and opposite ends. The first trumpet is made in the form of a coil, curving through a smaller diameter, with many, usually, PA the allelic, leaving gaps between sections of pipe, extending between its ends and forming the evaporator. The input part of the clamping device of the first pipe is located at one end of the first pipe, and the output part of the clamping device of the first pipe is located at the other end of the first pipe. Between adjacent sections of the pipe are threaded ribs. The second elongated multi-channel flat tube has a length, which is a smaller part of the length of the first pipe. The second tube has opposite ends, a larger diameter (greater transverse pipe size) and smaller diameter (less transverse pipe size), measured transversely to a larger diameter. The second pipe along the side wall, forming a larger diameter in contact with the corresponding side wall of the first pipe located directly upstream of the output part of the clamping device, to ensure good heat exchange with the first pipe, and creates a suction path of the heat exchanger. The input part of the clamping device of the suction circuit is located at one end of the second pipe, and the output part of the clamping device of the suction path is located at the other end of the pipe.

Due to this construction, the suction path of the heat exchanger is combined with the evaporator and increases the I only one size of the evaporator at a distance, corresponding to the smaller diameter of the second pipe. The result is vysokokompetentnoe structure.

In a preferred execution of the first pipe at the connection point with the second pipe has an almost right angle with the pipe sections, and both are strongly supported by some of the tribes.

In a preferred execution of the third elongated multi-channel flat tube ortopedia the first pipe. The third tube has a larger diameter (greater transverse pipe size), smaller diameter (less transverse pipe size), measured transversely to a larger diameter, and opposite ends. The third tube is in the form of a coil, curving through a smaller diameter, with a lot of usually parallel, leaving gaps between the sections of pipe between its ends. In between the pipe sections are drawn ribs. One end of the third tube is in fluid engagement with the input part of the clamping device of the first pipe and the other end of the third tube is in fluid engagement with the output part of the clamping device of the first pipe. The first and third tubes form a complex on the evaporator. The second tube is also in part between its ends is in contact with its wall with the wall portion of the third pipe, which is located directly upstream of the output part of the clamping lighting is sablania, to the second trumpet was in heat exchange with the third pipe.

In a preferred execution, the number of areas of the first pipe is equal to the number of sections of the third pipe.

In a very preferred version the third trumpet is a mirror image of the first pipe.

In one version of the invention, the output part of the clamping device of the suction circuit is hydraulically between the input part and output part of the clamping of the first pipe to provide opposite stream in the suction path of the heat exchanger.

In one version of the invention there are many stablehouse posted the first pipe from one side of the combined evaporator and suction circuit of the heat exchanger to the other side, and respective one ends of the first pipes are attached to the input side of the mounting bracket of the first pipe and the respective other ends of the first pipes are attached to the output side of the mounting bracket of the first pipe.

In the preferred execution of the second pipe is almost straight.

In one version of the invention, the input part and output part of the clamping device of the first pipe is made in the form of a separate clamping unit.

In another execution of the first pipe is in two separate sections. Lane is the first section includes generally parallel, divided between the pipe and the second section is where it is attached to the second pipe. The battery connects both sections.

In a preferred version, the battery is a vertically elongated tubular design. The second section of the first pipe is connected with the tubular structure above the connection point of the first section with a tubular design.

In one design, the battery is located on one side of the two sections. In another implementation the first section forms a flow path through the evaporator and the accumulator is shifted to the first section and is located in the path of the flow.

In another execution of the first pipe in contact with the second pipe is at a nearly right angle with the pipe sections and in engagement with the knees. In the contact region with the second pipe to the first pipe is made smaller bends or strobe edges. They are lined up in a row and meet the knees of the first pipe, catching them. In the bending of the first pipe small gaps are formed between the first pipe and the second pipe, to avoid the cooling effect of the first pipe.

One variant of the invention is a dual circuit evaporator with full suction path of the heat exchanger, including a pair of elongated multi-channel flat tubes, each opposite to the judgments and in the form of a coil for forming frames, with many parallel sections, with gaps between them, one end of each pipe is hydraulically close to the corresponding input section of the frame, which is the input part of the end frame, and the other ends of each pipe are output part of the end frame; each section of pipe located upstream of said output side end of the frame, extends along one side of the corresponding frame in a direction transverse to the sections of the frame, to the place on the other side of the corresponding frame, close to the input section of the frame; the frames are oriented in relation to one another so that these input areas are adjacent one another, and said upstream section aligned with one another; an input portion of the mounting bracket attached to both referred to the input portions of the ends of the frames; the output part of the mounting bracket attached to both of the mentioned output parts of the ends of the frames; additional elongated multi-channel flat tube passing along the above-mentioned sections, located directly upstream of the output parts of the ends of the frames, and being with them in a state of heat transfer.

The invention also provides a combined shall spritely and the suction path of the heat exchanger, in which the first pipe in the mentioned place in the part which is at a nearly right angle to the pipe sections and in rigid connection with the knees pipe has curves lined up in rows and siteplease appropriate bending of the knees; in places gearing knees bend first pipe is left between the bends of the first pipe and the second pipe.

It is also possible bypass combined evaporator with full suction path of the heat exchanger, in which said additional pipe is almost a straight pipe attached to referred to the upstream sections and having opposite ends between which said sections are arranged, the input connection part at one end of the additional tube and the output connection portion at the other end of the additional tube.

In addition, possible dual circuit evaporator with full suction path of the heat exchanger, including ribs, pulled between adjacent areas.

Also included is a dual circuit evaporator with full suction path of the heat exchanger in which the tubes mentioned pair are identical and are oriented so that one was a mirror image of the other.

Other objects and advantages will be seen from the description with the accompanying drawings.

IG - given the scheme of the previous system cooling technologies, including the suction circuit of the heater matrix.

Figure 2 - Dana made in accordance with the invention the circuit of the cooling system, including the intake path of the heat exchanger.

Figure 3 - Dan vertical incision sectionthree evaporator with full suction circuit heat exchanger made in accordance with the invention and taken approximately along the line 3-3 in figure 4.

Figure 4 - Dan schematic view of the suction path of the heat exchanger, combined with the evaporator.

Figure 5 - Dan section, taken approximately along the line 5-5 in figure 3.

6 is given a vertical view of a modified implementation of the invention.

7 - Dan vertical section of the modified execution of the invention.

Fig - Dan enlarged partial view of a single point of contact between the pipe forming the suction path of the heat exchanger, and a pipe forming the evaporator.

A preferred execution of the evaporator with full suction path of the heat exchanger will be given on the example of the cooling system shown in figure 2. Obviously, the heat exchanger described in the invention can be applied not only in cooling systems, but also to work effectively where compact radiator heater uses gas as a medium of heat transfer for the exchange of heat with the second medium heat, which, circulating, can absorb or transfer heat to a third medium heat.

It is also obvious that the invention can work effectively in cooling systems using appropriate refrigerants, where the evaporated refrigerant to condense it in the condenser, and also in more sophisticated systems, such as systems with supercritical CO2where the compressed refrigerant is not condensed, and only cooled in the heat exchanger, called the gas cooler. The term gas cooler means not only radiator heater in systems with supercritical CO2but also suitable refrigerator systems, using a suitable refrigerant.

The above-mentioned cooling system shown in figure 2. It is ideally suited for use in vehicles due to the compactness and light weight. It can also be used in stationary systems.

As can be seen in figure 2, the system includes a compressor 10, which delivers the hot refrigerant at high pressure at the output of the line 12 in the gas cooler 14. Cooler, such as ambient air, is passed or drawn through the gas cooler 14 by means of the fan 16. Subsequently condensed or strongly cooled refrigerant at high pressure leaves the gas cooler 14 on line 18, which will be sent to the radiator from which pitela 20, which is in heat exchange with the evaporator 22 and especially with the side of the output side of the evaporator 22. The fan 24 is used for feeding or retracting air that has been cooled by the evaporator 22. Some of this air will flow around the heat exchanger 20.

The heat exchanger 20 produces still relatively hot, high pressure refrigerant in the expansion device 26 which pumps it into the evaporator 22. Extended inside the evaporator, the refrigerant absorbs latent heat of vaporization (in the case of the evaporating refrigerant). Then the evaporator 22 heats flowing in the suction path of the heat exchanger 20, the refrigerant and releases it to the inlet of the compressor 10.

Refer to Figure 3. The combined evaporator and suction circuit of the heat exchanger 20 and 22 will be described in more detail. The evaporator includes an input portion of the mounting bracket 30, which is desirable to combine with the input part of the mounting bracket 32. The input part of the clamping device 30 must be normally attached to the expansion device 26, and the output part of the clamping device 32 must be normally connected to the input side of the compressor 10.

Two long segment of straight pipes 34 and 36 are input ends 38 and 40, respectively, they are attached to the input side of the mounting bracket 30. Pipes 34 and 36 also have output ends 42 and 44, which are attached and are in fluid engagement with the output part of the mounting bracket 32.

The pipe 34, the gap between the ends 38 and 42, is bent in the form of a coil so as to have multiple parallel sections 46, connected by lap 48. Sections 46 are separated one from the other intervals, and between adjacent sections 46 are drawn ribs 50 of the coil.

One site indicated by the position 52, an output section and located at the side of the side plate 54, is inserted between the two serpentine ribs 50. At the upper end of the outlet pipe 52 is bent the knee 56 at approximately 90 degrees to be spread to the output side of the mounting bracket 32 so that the end 42 of the tube 34 was in liquid interaction with the output part of the mounting bracket 32. This section of pipe 34, indicated by the position 58 is in contact with the lap 48 on the adjacent side of the evaporator and is located upstream relative to the output side of the mounting bracket 32. The pipe 36 is mirrored by a pipe 34 with plate 54 and section 58 of the output portion, transverse to sections 46 and the like. In fact, the pipe 36 may be made identical with the pipe 34 and only inverted 180 degrees. Since the pipes 34 and 36 are identical, Fig the arts each pipe 34 and 36 will have the same number of sections 46, as the other. It should be noted that, if required, one of the pipes 34 or 36 may have a greater number of sites than the other.

In the above it is important to note that the refrigerant has been evaporated after having passed through the expansion device (such as an expansion device 26 shown in figure 2) and is supplied to the input portion of the mounting bracket 30 to flow through both pipes 34 and 36 to eventually appear on the output side of the mounting bracket 32.

To ensure the effective suction path of the heat exchanger is relatively straight section of the pipe 70, also flat pipe, rigidly connected by soldering with hard or soft solder to the output sections 58 of the two pipes 34 and 36. At the ends 72 and 74 of the tube 70 respectively provided in the input part of the mounting bracket 76 and the output part of the mounting bracket 78. In Figure 2 it should be clear that the input portion of the mounting bracket 76 is connected with the outlet of the gas cooler 14 and the output part of the mounting bracket 78 is attached to the inlet extender device 26. Due to this construction a relatively hot refrigerant under high pressure will flow through the pipe 70 of the clamping device 76 to push the fixture 78. He will be in the state exchanger is s with the cooled low pressure refrigerant when this refrigerant will be released from the evaporator 22 to the output part of the mounting bracket 32. As a result, the low pressure refrigerant will be heated to achieve supernarrow output stream.

As can be seen in figure 4, several rows of tubes 34, 36 may be used in the kit. So, set up for a number of pipes 34 and 36 are indicated by position "A", located downstream the number indicated by position "B". The average number indicated by the position "C". It should be noted that the dimensions of the tubes in each row need not be the same. Usually, but not always, there will be one pipe 70 for each of series "A", "b" and "C".

In view of the foregoing it is preferable to use a flat tube of the so-called multi-channel type. In such a tube can be shrunk or included insert that divides the cavity into multiple passes. The passages can be divided or to be in liquid communication. Depicted in Figure 5, the pipe 70 has a set of internal passageways 80, separated with jumpers 82, which may be made by extrusion or extrusion, and are connected by insertion. Pipes 34 and 36 include a variety of internal passages 84, separated by bridges 86, which may be formed in a similar manner. All pipes 34, 36 and 70 are flat tubes, and you must have centuries the remote control, each tube will have a larger diameter DM(more transverse pipe size)and a smaller diameter DM(the smaller the transverse pipe size), measured across a larger diameter DM. Since the pipes are flat on their border 90 internal connection can be obtained using hard or soft soldering solder to achieve good contact heat transfer between the pipe 70 and 34, 36.

An alternative implementation is shown in Fig.6. It includes the input part of the clamping device 100 intended for connection to the expansion device indicated by the position 26 in figure 2. The input part of the clamping device 100 is connected with the pipe 102, which is made of two sections. The first section, generally indicated by the position 103, includes a multi-channel pipe, consisting of a set of generally parallel straight line segments 104, which are connected by a lap 106. The end of the first section 103 of the pipe 102 is connected, being in fluid engagement with the pipe 108, which extends to a vertically oriented tubular design of the battery 110, closed at its ends and generally being round or oval cross-section. The pipe 108 is in fluid communication with the internal cavity of the tubular structure 110 at a location generally below the output of the pipeline 112. Both p is soedinjajutsja to the tubular structure 110 around its upper end.

The output part of the pipeline 112 is connected with the second section 114 of the pipe 102, which typically runs at a nearly right angle to sections 104 of the first section 103 of the pipe 102, and to the output side of the mounting bracket 116 on the side of the pipe 102, which has an input portion of the clamping device 100. The output part of the mounting bracket 116 is attached to the input side of the compressor such as the compressor 10 of Fig. 2. In some cases, a suitable battery may be inserted between the output part of the mounting bracket 116 and the compressor 10.

The second multi-channel tube 120 borders and in contact with the second tube 114 is essentially along the entire length. The second pipe 120 serves as a suction path of the heat exchanger and one end includes an input portion of the mounting bracket 122, and at the opposite end of the output portion of the mounting bracket 124. Thus, as shown in Fig. 2, the suction path of the heat exchanger is attached to the cooling circuit.

It should be appreciated that the combined suction path of the heat exchanger and the evaporator are provided where the flow of the refrigerant emerging from the evaporator section, flows in opposite stream to the refrigerant, the current in the suction path of the heat exchanger is formed by a pipe 120. In this version, the tubular to the construction 110 is battery. In steady state no liquid refrigerant leaves the evaporator through the second section 114 of the first pipe 102. In unstable conditions, such as during start-up, opening the refrigerant can be sufficiently heated by the hot refrigerant in the suction path of the heat exchanger is formed by the tube 120, so that not all the steam comes out of the output part 116, if the battery is formed by a tubular structure 110. In the implementation depicted in Fig.6, the entire refrigerant emerging from the evaporator section formed by the first section of pipe 102, will be supplied to the battery 110. The liquid refrigerant will remain at the bottom, and only the gaseous refrigerant will emerge from the output of the pipeline 112, heated suction path of the heat exchanger is formed by a pipe 120.

It should be noted that in this version, the first section of the tube 102 defines the path of the air flow through the evaporator. The battery in this special performance close to the first section of the tube 102 in order to stay on the path of the air flow. In the presence of liquid refrigerant in the accumulator 110 flowing air stream heats it, and the liquid refrigerant evaporates during operation of the device.

An alternative design, shown in Fig.7, like performance, is shown in Fig.6, except that the evaporator 7 is INR is contorni, and the battery is on one side of the evaporator. Due to the similarity for these components will use the same notation.

As shown in Fig.7, the first section of the pipe 102 is replaced by two hydraulically parallel sections 130 and 132 in the form of coils. Both pipe sections 130 and 132 are attached to the input side of the clamping device 100, and also to push the device 134, which serves as the input part of the tubular battery 136, which may be the same or similar tubular structure 110. In this case, the battery 136 is located on one side of the sections 130 and 132. The section of pipe 130 includes parallel sections 136 connected knees 138, and a tubular section 132 includes straight parallel sections 140, United knees 142. In the section of the tubes 130 and 132 are in the form of a coil, and ribs in the form of a coil 144 are suitable for use.

In this version, the second section of pipe 114 connected to the battery 136 via clamping device 150 at the upper end of the battery 136 is located above the clamping device 134. The device is basically similar to the variant depicted in Fig.6. Performance figure 7 is intended for use cases where we can expect a sharp decrease in pressure. Due to the fact that the execution of figure 7 has udoe the number of paths in comparison with the performance of figure 6, the mass flow through each circuit is reduced by half, with a corresponding reduction of the pressure loss.

There may be presents some performance related korotkomernyh ways in the evaporator section of the combined suction path of the heat exchanger and the evaporator. So in some cases it is desirable that the cooling ability of the refrigerant flowing through the section of the kit evaporator was not reduced due to the removal of heat from the suction circuit of the heat exchanger is formed by the pipe 70 or pipe 120 of the evaporator. So, if necessary, can be used in the design depicted in Fig. It should be noted that although Fig has been described in connection with the execution depicted in Fig.6, the design depicted in Fig, can be effectively used in all versions where necessary.

The second section of tube 114 is in contact with each lap 106 and has a small, U-shaped bends 152. Usually bends 152 are connected with the corresponding lap 106 by brazing. The curves 152 form a gap 154 between the second section of the pipe 114 and the pipe 120, which forms the suction path of the heat exchanger, and prevent the transfer of heat from the pipe 120 to the first section of the pipe 102, which are both in tight proximity due neighbourhood pipe 114. As a result, there slightly is I available area for heat transfer and, therefore, there is a significant impediment to the transfer of heat from the hot refrigerant flowing in the suction path of the heat exchanger, the refrigerant evaporated within the evaporator section in a combined unit. It should be noted that many of execution of the invention with the various features are basically interchangeable, and if it is shown that specific design to fit the application with a single execution, it does not mean that you cannot use it in another implementation of the invention. It should be noted that soldering multichannel tubes hard solder, the use of batteries, the use of bends, pipe segments, and the like can be used in any implementation of the invention.

Dual circuit evaporator with full suction path of the heat exchanger includes a pair of elongated multi-channel flat tubes having opposite ends and bent in the shape of the coil. These two tubes to form a frame, having a multitude of parallel, spaced sections of the frame, the input part and the output part at the ends. The input end part of the frame is (hydraulically) near one end of each pipe. The output part of the end frame are the other ends of each of the tubes. Section of each pipe directly above is of course relative to the input part of the end frame, extends along one side of the corresponding frame in a direction transverse to the sections of the framework, to the place on the other side of the corresponding frame located adjacent to the input section of the frame.

Frames are oriented so that the input areas are adjacent to each other, and the section located upstream relative to the output end part of the frame, aligned one to another.

The output part of the mounting bracket is attached to both of the output parts of the ends of the frames.

Along sections located directly upstream of the output parts of the ends of the frames, stretches for more multichannel tube under these sections in the heat.

From the above it is evident that the combined evaporator and suction circuit heat exchanger made in accordance with the invention is very compact. In fact, only the shell is filled by the evaporator 22, the minimum increases due to the smaller diameter dmpipe 70 and a place take the output and input side of the clamping devices 76 and 78 of the pipe 70.

Although the invention has been illustrated with two schematic solutions, however, if desired, can be made simple schematic of the actual device. It may be desirable to exclude the pipe 36, which will provide for the opposite stream in the pipe 70 and the output hole section 58 of the pipe 34 for maximum efficiency of heat transfer.

Optionally, the useful volume can be easily increased or decreased without changing the frontal area of a full radiator heater by changing the number of series "a", "b" and "C" in the heater matrix.

1. The combined evaporator with the suction path of the heat exchanger is designed for use in air conditioning and cooling systems, including

the first elongated multi-channel flat tube forming the evaporator, which has a larger transverse pipe size and smaller transverse size of the pipe, measured perpendicularly greater transverse size of the pipe, and opposite ends, the first tube is in the form of a coil with knees bent through the mentioned lower cross pipe size, with many parallel forming gaps between the sections of the first pipe between the said ends;

the input part of the clamping device at one end of the first pipe;

the output part of the clamping device on the other end of the first pipe;

ribs extending between adjacent sections of the first pipe;

the second elongated multi-channel flat tube forming the suction path radiator-heater and having a length that is a smaller part of the length of the first pipe, opposite ends, a larger Popper is CNY pipe size and smaller transverse size of the pipe, measured perpendicularly greater transverse pipe size;

the second pipe along the side wall, forming referred to a larger transverse size of the pipe that is attached to the corresponding side wall of the first pipe located directly upstream of the output part of the clamping device to ensure good heat transfer between them;

the input part of the clamping device of the suction path at one end of the second pipe;

the output part of the mounting bracket suction path at the other end of the second pipe.

2. The combined evaporator with the suction path radiator-heater according to claim 1, where the portion of the first pipe in the mentioned location is at right angles to said pipe and in hard contact with some of his knees.

3. The combined evaporator with the suction path radiator-heater according to claim 2, including a third elongated multi-channel flat tube, which has the form of an inverted image of the first pipe and has a larger transverse size of the pipe, the smaller the transverse size of the pipe, measured perpendicularly greater transverse size of the pipe, and opposite ends; a third pipe is made in the form of a coil with knees bent through the mentioned lower cross pipe size, m is these parallel, forming gaps between the sections of the third pipe between the said ends and edges extending between adjacent sections of the third pipe; one of the ends of the third tube is in fluid engagement with the input part of the clamping device of the first pipe, the other end of the said third tube is in fluid engagement with the output part of the clamping device of the first pipe, the first and third tubes form a complex on the evaporator; the above-mentioned second pipe portion between its ends connected to your wall with the wall portion of the third pipe, which is located directly upstream of the output part of the clamping device of the first pipe to the second pipe was in the heat exchange with the third pipe.

4. The combined evaporator with the suction path radiator-heater according to claim 3, where the third trumpet is a mirror image of the first pipe.

5. The combined evaporator with the suction path radiator-heater according to claim 3, where the number of parts of the first mentioned pipe is equal to the number mentioned sections of the third pipe.

6. The combined evaporator with the suction path radiator-heater according to claim 1 where the above-mentioned output portion of the mounting bracket suction circuit is hydraulically between the input part and output the ne part of the clamping of the first pipe to provide opposite stream in the suction path of the radiator-heater.

7. The combined evaporator with the suction path radiator-heater according to claim 1, which includes many stablehouse posted the first pipe from one side of the combined evaporator and suction circuit radiator-heater to the other side and respective one ends of the first pipes are attached to the input side of the mounting bracket of the first pipe and the respective other ends of the first pipes are attached to the output side of the mounting bracket of the first pipe.

8. The combined evaporator with the suction path radiator-heater according to claim 1, in which the above-mentioned second pipe is a straight line.

9. The combined evaporator with the suction path radiator-heater according to claim 1, in which the mentioned input part and the output part clamping a first pipe made in the form of a separate clamping unit.

10. The combined evaporator with the suction path radiator-heater according to claim 1, in which the first tube is made of two separate sections; the first section includes the aforementioned sections of pipe, usually parallel, with intervals between them, and the second section is referred to the place where the first pipe is connected with the second pipe, and the two sections are connected battery.

11. The combined evaporator with the suction path radiator-heater of claim 10 in which the said battery is a vertically elongated tubular structure.

12. The combined evaporator with the suction path radiator-heater according to claim 11, in which the above-mentioned second section is attached to the mentioned tubular structure above the point of joining the first section to the tubular structure.

13. The combined evaporator with the suction path radiator-heater of claim 10 in which the said battery is located on one side of said two sections.

14. The combined evaporator with the suction path radiator-heater of claim 10, in which is mentioned the first section forms a path of air flow through the evaporator and the above-mentioned battery is adjacent to the first section of the path of the air stream.

15. The combined evaporator with the suction path radiator-heater of claim 10, which includes the first two sections of pipe, intertwining with one another to form a complex on the evaporator.

16. The combined evaporator with the suction path radiator-heater according to claim 1, in which the first pipe in the mentioned place in the part which is at a nearly right angle to the pipe sections and in rigid connection with the knees pipe has curves lined up in rows and siteplease appropriate bending of the knees; in places gearing knees bend first pipe is left between the bends of the first pipe and the second pipe.

17. Combi the new evaporator with the suction path radiator-heater according to clause 16, moreover, the suction path radiator-heater complete, and the evaporator is made of double-circuit, in which said additional pipe is almost a straight pipe attached to referred to the upstream sections and having opposite ends between which said sections are arranged, the input connection part at one end of the additional tube and the output connection portion at the other end of the additional tube.

18. The combined evaporator with the suction path radiator-heater according to clause 16, and the suction path of the heat exchanger is made full, and the evaporator is made of double-circuit, including ribs, pulled between adjacent areas.

19. The combined evaporator with the suction path radiator-heater according to clause 16, and the suction path of the heat exchanger is made full, and the evaporator is made of double-circuit, in which the pipes mentioned pair are identical and are oriented so that one was a mirror image of the other.

20. The combined evaporator with the suction path radiator-heater, and the suction path of the heat exchanger is made full, and the evaporator is made of double-circuit, including

a pair of elongated multi-channel flat tubes, each with opposite ends and f is RME coil for forming frames, with many parallel sections with gaps between them, one end of each pipe is hydraulically connected to the corresponding input section of the frame, which is the input part of the end frame, and the other ends of each pipe are output part of the end frame; each section of pipe located upstream of said output side end of the frame, extends along one side of the corresponding frame in a direction transverse areas of the frame, to the place on the other side of the corresponding frame, close to the input section of the armature;

the said frames are oriented in relation to one another so that the said input sections are adjacent one another and said upstream section aligned with one another;

the input portion of the mounting bracket attached to both referred to the input portions of the ends of the armatures;

the output part of the mounting bracket attached to both of the mentioned output parts of the ends of the armatures;

additional elongated multi-channel flat tube passing along the above-mentioned sections, located directly upstream of the output parts of the ends of the frames and placed them in a state of heat transfer.



 

Same patents:

FIELD: mechanical engineering.

SUBSTANCE: wire-tubular evaporator is provided with guide plate whose body is extended lengthwise and at least one tubular clip for securing the plate to evaporator tube. Tubular clip is mounted on bracket extending aside from plate body.

EFFECT: enhanced accuracy of fitting the guide plate along center line of evaporator.

8 cl, 3 dwg

The invention relates to cryogenic technique, namely the evaporation of the cryogenic liquid, and can be used in gasification plants

The evaporator // 2230264
The invention relates to refrigeration, and particularly to evaporators of refrigerating machines

The invention relates to refrigeration

The evaporator // 2204091

The invention relates to heat pump installation

The invention relates to refrigeration and can be used for automatic cooling fluid and air

The invention relates to refrigeration and defrosting of the evaporators of refrigerating chambers using electric heating

Evaporative unit // 2185577
The invention relates to evaporative unit with at least two spaced each other with a serial connection, loaded from the compressor with the refrigerant through the injection site evaporators different cooling capacity, and the lower evaporator cooling capacity is made in the form of a sheet, while the evaporator is higher cooling capacity equipped with a pipe serving to guide the refrigerant, and is connected in series before the lower evaporator cooling capacity

The invention relates to heat-exchange technique and can be used in evaporators for refrigerating circuits

FIELD: mechanical engineering.

SUBSTANCE: wire-tubular evaporator is provided with guide plate whose body is extended lengthwise and at least one tubular clip for securing the plate to evaporator tube. Tubular clip is mounted on bracket extending aside from plate body.

EFFECT: enhanced accuracy of fitting the guide plate along center line of evaporator.

8 cl, 3 dwg

FIELD: cooling and air conditioning system components, particularly evaporators.

SUBSTANCE: evaporator comprises of the first elongated flat multi-channel pipe having serpentine configuration defined by elbow members bent across the minor dimension thereof. The pipe has a number of spaced apart parallel parts extending between ends of the first pipe. Inlet member of clamping means is connected to the first pipe end, outlet member thereof is fastened to the second end thereof. Ribs are located between neighboring parts of the first pipe. The second elongated flat multi-channel pipe forms suction radiator loop. The second pipe is connected to the first one so that side wall of the second pipe defining major pipe dimension is connected to side wall of the first pipe directly upstream of the outlet member of the clamping means to provide improved heat exchange between the pipes. The second pipe ends are also fitted with inlet and outlet members of clamping means.

EFFECT: increased compactness.

20 cl, 8 dwg

FIELD: refrigeration equipment.

SUBSTANCE: cooling agent evaporator comprises cooling agent pipeline and surface connected to the pipeline through heat-conductive connection. The surface is used as heat-exchanger and is covered with water-repellent oil film. The evaporator may be of lamella type (plate type).

EFFECT: decreased noise during evaporator operation.

3 cl, 1 dwg

FIELD: cooling equipment and other industry, for instance, chemical industry.

SUBSTANCE: evaporator comprises panels or coil pipe batteries, as well as liquid and vapor manifolds with coolant. Panels or coil pipe batteries or manifold batteries extend in horizontal direction one under another and are shifted one from another. The panels or coil pipe batteries or manifold batteries are enclosed with iron sheet having varying height. Panels or coil pipe batteries or manifold batteries are inserted in metal frame fixedly connected with metal tray and hermetically closed with plastic sheets along perimeter thereof.

EFFECT: provision of necessary heat carrier temperature and continuous temperature maintenance, decreased power inputs and heat carrier volume, reduced device costs and increased safety.

1 cl, 1 dwg

FIELD: heating.

SUBSTANCE: milk refrigerating unit contains square reservoir with external heat-insulating coating, evaporator, force-suction manifold of compressor-condenser device. Evaporator is of slot type and represents two halves of V-shaped bottom with injector and suction header each, which are connected accordingly with force and suction manifolds of compressor-condenser device, at that slot evaporator is made with seam welding with seam width of at least 4 mm, pitch of seams of not more than 35 mm, depth rolling of slots of not more than 3 mm.

EFFECT: exclusion of evaporator damage during its flushing with hot water.

4 dwg

Heat exchanger // 2359194

FIELD: mechanics.

SUBSTANCE: invention relates to refrigerating equipment used in climate tests. The proposed heat exchanger comprises a housing and evaporator. The heat exchanger housing is separated by the main baffle into inlet and outlet chambers. The inlet chamber inlet accommodates deflecting baffle. The outlet chamber outlet accommodates the outlet pipe-bend and houses the evaporator and additional baffle. The inlet and outlet chambers communicate via a gap arranged between the main baffle and heat exchanger housing. The fan is arranged between the inlet pipe-bend and the housing. The bypass is provided for between the inlet and outlet pipe-bends.

EFFECT: longer faultless operation of evaporator.

2 cl, 1 dwg

FIELD: personal demand items.

SUBSTANCE: refrigerator with a freezing chamber includes a through internal container with a freezing chamber and a storage compartment for cooled products, which are rigidly connected to each other. There is no connection line or broken edge, at that, evaporator (9) is installed on compartment (6) of the freezing chamber. Evaporator is made in the form of a box with winding, which envelopes the freezing chamber in a circumferential direction on its four sides.

EFFECT: providing more effective cooling of products.

8 cl, 3 dwg

FIELD: heating systems.

SUBSTANCE: anti-frost evaporation tube of refrigerator with drawers consists of internal housing wherein there provided is food storage compartment for arranging drawer-container, and in the latter, low temperature is maintained by means of evaporation tube for cooling agent circulation, which is located around external part of internal housing. Evaporation tube includes curved parts located on both side surfaces of internal housing and straight tube part located on upper surface of internal housing and connected to curved tube parts.

EFFECT: use of this invention allows eliminating frost formation on roof surface of refrigerator internal housing.

5 cl, 7 dwg

FIELD: heating systems.

SUBSTANCE: invention refers to cryogenic equipment, and namely to cryogenic liquid evaporators, and can be used in gasification plants. Cryogenic liquid evaporator includes housing with cryogenic liquid supplying assembly and cooling agent output assembly and heat exchange assembly made in the form of a tube bank, inter-tube space of which includes dump packing. In addition, heat exchange assembly is equipped with gas distributing grid located in lower part of tube bank and having the shape of flattened cone installed with smaller base upwards. Dump packing is located on gas distributing grid.

EFFECT: use of invention will allow more efficient use of thermal and physical properties of heat exchange assembly of cryogenic liquid evaporator owing to arrangement of dump packing with section having constant resistance, and creating conditions of uniform distribution and passing of warm gas vapours through the head piece.

3 dwg

Heat exchanger // 2378586

FIELD: heating.

SUBSTANCE: invention concerns refrigerating engineering. A heat exchanger (301) is designed to be connected to an evaporator (201) of a heat-transfer system wherein a working medium used is compressed and evaporated. The heat exchanger comprises a first tube (107) with its first end (303) shaped in such a way to be attached to an outlet fitting (204) of the evaporator and to transfer the medium from said outlet fitting, and the second tube (108) with its first shaped in such a way to be connected to the inlet fitting of the evaporator and to transfer the medium to said inlet fitting. The second tube is mounted inside of the first tube, or in thermal contact thereto, herewith ensuring the relations (109, 110) of the respective lengths of the first and second tubes to enable heat exchange between the mediums in these tubes. The first tube is made of the steel alloy consisting of ingredients reducing hardness of said steel alloy, thereby easing bend of the tube and enabling to bend the first tube in installation in the heat transfer system.

EFFECT: application of the invention allows reducing cost of the heat exchanger.

31 cl, 10 dwg

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