An improved inlet to the evaporator (options)

 

The invention relates to refrigeration. Improved distribution of the liquid refrigerant in the evaporator, having a pair of headers and a set of flows between the collector tubes containing a collection of separate channels for the refrigerant through the use of at least one inlet for the refrigerant inside one of the collectors. The inlet has a first passage adapted for connection with a source of evaporated refrigerant, and an oppositely directed second and third passages connected to the first passage. The second passage is directed from one side of the collector, while the third passage is directed to the side of the collector. The use of the invention will improve the efficiency of evaporation. 3 C. and 10 C.p. f-crystals, 5 Il.

SCOPE

The present invention relates to evaporators for refrigerants, namely an improved inlet for such evaporator, in order to enhance the operation of evaporation.

The LEVEL of TECHNOLOGY

In jointly owned by letters patent of the United States No. 5341870 and 5533259, issued August 30, 1994, and July 9, 1996, respectively, in the name of Hughes and others, the entire contents of which Slovenia in air conditioning systems of residential premises.

Although the devices described in the patents of Hughes and others, well perform intended functions and are indeed a great improvement on the standard evaporators used in air conditioning systems, they are characterized by the same associated with efficiency problems, if the refrigerant is incorrectly distributed inside the evaporator.

When there is improper distribution of some section of the evaporator may be flooded with liquid refrigerant, while in another section of the refrigerant virtually none. Example picture of the wrong distribution derived from infrared thermal imaging real evaporator shown in Fig.1. This dispenser has a conventional configuration illustrated in the above patents Hughes and others, in which one collector 10 has an input adapter 12, and the opposite manifold 14 has an output adapter 16. That is, the evaporator is shown as it is called in the manufacture of the V-shaped evaporator with parallel current type "in the end went in, end-out.

Position 18 is marked schematic image of a pipe inserted into the reservoir 10 and 14, and, of course, between the scarlet amount of refrigerant quickly depleted the stock of liquid or in a mixed phase refrigerant. Consequently, a significant percentage of the length of each pipe contains only one phase is superheated gaseous refrigerant. The transfer of heat is insufficient.

In addition, the temperature at the surfaces located on the side of the air passage, in those places where the superheated gas stream, usually above the dew point, and, consequently, they will not condense moisture from the air passing through the evaporator by these areas with superheated stream. Thus, in these places the air is not dried.

Where is the drainage on the outside of the pipes will be moisture, which will increase the resistance to air flow through the evaporator in these places. Thus, the resistance to air flow will be less in areas where the superheated stream, and, therefore, peregrevaetsya region will receive a disproportionate share of the total amount passing through the evaporator of the air, which will further reduce the efficiency.

In pipes with excessive amount of refrigerant heat transfer is very good and full, but often not all of the liquid refrigerant evaporates. Shadowhost was wasted. Moreover, because of the presence in the suction line Nisporeni liquids have to be used in the system of valves to monitor and ensure the free thermal expansion. In the process becomes unstable.

In Fig.1 region, which is a superheated gas stream, shaded. On the contrary, potaninia regions correspond to a properly functioning parts or parts where there is a surplus refrigerant in the pipes.

The presented invention is aimed at achieving a more uniform distribution of the refrigerant in the evaporator and in the V-shaped evaporators in parallel with current by eliminating or minimizing the areas in the evaporator, which can cause lack of refrigerant to be excessive superheat of the refrigerant.

The ESSENTIAL features of the INVENTION

The main object of the invention is a new and improved evaporator for the refrigerant. Namely, the object of the invention is a new and improved intake system in the evaporator for the refrigerant to achieve a more uniform distribution of the refrigerant inside the evaporator.

An exemplary embodiment of the presents invention, to achieve to enter the passes at least one pipe, inserted in each of them from a certain side and uniting them into a single system, and this pipe contains a number of separate channels for the refrigerant that flows between the reservoirs. On one of the reservoirs is at least one inlet for the refrigerant. The inlet has a first passage connected to a source of evaporated refrigerant, and a second passage connected to the first passage inside the manifold and directed from the side of the collector. In the evaporated refrigerant is sprayed on the inner surface of the collector, which is located opposite the ends of the channels for the refrigerant, and himself the collector serves as the spray dispenser.

In a preferred embodiment of the invention, the inlet having a third passage, which is also connected to the first passage. The third passage is directed in the opposite second passage side, i.e. on the other side of this collector, which are the channels for the refrigerant. The third passage, therefore, provides atomization and distribution of the refrigerant in the pipe to the side of the inlet, while the second pass provides atomization and distribution of the refrigerant in the channels, Bo>/p>Preferably, the set of channels was formed by a set of pipes, and these pipes were located at some distance from each other.

In a preferred embodiment of the invention, the tubes have respective pipe ends inserted from a certain side in each of the headers.

Preferably, each tube was further divided into a number of separate channels for the refrigerant.

In the best embodiment of the invention the collector is elongated and has a number of inlets for the refrigerant located at some distance from each other along this manifold.

In addition, in the preferred embodiment of the invention at least the collector is generally tubular.

A preferred variant of the invention involves the evaporator with an elongated collector. Provided by a number placed at equal distances from each other smooth tubes inserted with their ends in the collector with a particular party. Provided the inlet of the manifold, which consists of a number exploded injectors made so that they could be connected to a common source of esparra, in which are inserted the ends of the smooth tubes.

In a preferred embodiment, the pipe ends shall be issued in the inner part of the manifold and the injectors are placed between the ends of adjacent pairs of tubes.

Preferably, in addition to these outlets, which are the main outlet holes, each of the injectors would have an additional outlet that has a smaller size compared to the main outlet and directed to the side of the reservoir, which is located between the ends of adjacent pairs of tubes.

Other objects and improvements will become apparent from the following description, accompanied by drawings.

DESCRIPTION of DRAWINGS

Fig.1 is a General view of the evaporator in accordance with the prior art.

Fig.2 is a General view of the evaporator in accordance with the invention.

Fig.3 is an enlarged detail view of the inlet opryskivatel such evaporator.

Fig.4 is an enlarged partial section of the inlet opryskivatel.

Fig.5 is a view similar to those shown in Fig.1, but illustrating an evaporator made according to the invention.

DESCRIPTION the BEST INVENTIONS

Rough version of izobretena parallel current. But, of course, the application of the presented invention is not limited to only such evaporators. It can be effectively used in any evaporator having a collector which is connected with a number of spaced channels for the refrigerant.

The evaporator has an inlet manifold 20 in the form of an elongated tube. It also includes output collector 22. A number of smooth multi-channel pipe 24 connects the collectors 20 and 22. Between adjacent smooth pipes 24 are curved ribs 26.

Output collector 22 has a single output adapter 28, which may be of standard design. In a preferred embodiment of the invention the inlet manifold 20 is equipped with four spaced along it at the same distance from each other injectors for refrigerant 30, 32, 34 and 36. The injectors 30, 32, 34 and 36 can be a conventional pipe connected with a standard valve 38, which, in turn, may be connected to a common source of liquid refrigerant, that is, ultimately, to the condenser of the cooling system, which can only be used for cooling purposes, or as a heat pump, or air conditioning, or in Rennyo part of the inlet manifold 20. For pipe ends 40 can be seen that each pipe itself consists of a number of separate channels 42, which preferably should have a hydraulic diameter of not more than 0,07". The hydraulic diameter is defined as usual, and as four times the cross-sectional area of each channel 42, divided by the wetted perimeter of the channel.

The ends 40 are located at some distance from each other and, as seen in the Fig.3, one of the injectors, namely injectors 34 placed between the ends of a pair of adjacent pipe 24. You can also draw attention to the fact that the injectors 34, as the injectors 30, 32 and 36, made of round pipe of smaller diameter than pipe was made of the inlet manifold 20. Injectors 34 is inserted into the manifold 20 is almost at a right angle thereto and to the plane defined by the combination of tube 24 near the collector 20.

As shown in Fig.4, the pipe 24 is inserted from the side 44 of the collector 20, and the pipe ends 40 extend almost to the middle section of the collector 20. The end 48 of opryskivatel 34 inside of the collector 20, sealed. Opposite there is a passage 49 through which, when connected, may be supplied refrigerant. Injectors 34 also has a built opposite sides 44, through which the tube 24 is inserted into the reservoir 20. On the sprayer 34 inside the reservoir 20 is also placed additional discharge outlet 54, the center of which is located on the common line of centers with the main exhaust hole 50. Additional discharge outlet 54 is smaller in comparison with the main outlet and directs the liquid refrigerant toward the side 44. The point of injection may be located between adjacent pipe ends 40 or on the same level with any of them.

The spray coming out of the primary outlet opening extends along the inner side 52 of the collector 20, which allows the refrigerant will extend along a substantial cut on the inside of the collector, resulting in the totality of the pipe 24 between the locations of the injectors 30, 32, 34 and 36 receives the refrigerant. In many cases it requires only basic outlet 50. However, sometimes, especially when the pipe ends 40 go for a substantial distance into the interior of the collector 20 is in close proximity to the injectors 30, 32, 34 or 36 of the pipe can't get enough refrigerant, because he literally sweeps past them is skyvalley 30, 32, 34 and 36 may be provided an additional outlet openings 54 in order to ensure that adjacent to the location of each opryskivatel pipe 24 receive an adequate amount of liquid refrigerant.

In Fig.5 shows an infrared thermal image of a real evaporator in accordance with the invention. The shaded area on it correspond to areas in which there is a superheated gaseous stream. You can see that I made using the invention of the evaporator of Fig.5 these areas are significantly smaller, which can greatly improve the efficiency of this evaporator compared to that shown in Fig.1.

In this illustrated the evaporator, which is designed as an evaporator at 30,000 W/h, there are four points of injection. Each injectors made of pipe outside diameter of 0.25" wall thickness equal to a 0.035". The main outlet openings 50 have a diameter 0,125", and the additional outlet openings 54 - diameter 0,052". In one embodiment, the frame of the evaporator consists of 45 smooth tubes 24.

Considering the above, it is easy to understand that in the evaporator in accordance with the invention, contiguity. Used scheme is relatively simple due to the fact that the injectors can be made of pipes with drilled in them under the proper size of the exhaust holes. Thus, this is a real increase effectiveness at minimal cost or complications.

Claims

1. The evaporator, including a pair of spaced headers, at least one passing between the said reservoir tube, is inserted into each of them from a certain side and uniting them into a single system, and this pipe contains a collection of separate channels for the refrigerant passing between the said reservoir, and at least one inlet for the refrigerant in one of the mentioned reservoir, and the inlet has a first passage adapted for connection to a source of evaporated refrigerant, and an oppositely directed second and third passages connected with a first passage, moreover, the specified second pass is directed from the mentioned parties, and the third passage is directed to the aforementioned party.

2. Evaporator under item 1, wherein said third passage is less than a specified second pass.

3. Evaporator under item 1, in which ukaga.

4. Evaporator under item 3, in which the respective pipe ends of pipes in a specified aggregate is inserted in the side of each of these collectors.

5. Evaporator under item 3, in which each of the said tubes further comprises a set of separate channels for the refrigerant.

6. Evaporator under item 1, wherein said manifold is elongated and has a specified number of inlets for the refrigerant along this manifold.

7. Evaporator under item 1, in which at least the specified collector is generally tubular.

8. The evaporator, including a pair of spaced headers, at least one passing between the said reservoir tube, is inserted into each of them from a certain side and uniting them into a single system, and this pipe contains a collection of separate channels for the refrigerant passing between the said reservoir, and at least one inlet for the refrigerant in one of the mentioned reservoir, and the inlet has a first passage adapted for connection to a source of evaporated refrigerant, and coupled with a first passage, a second passage inside the specified collector and directed from CLC, inside the specified collector and coupled with a first passage and the third passage is directed to the said party of the specified collector.

10. Evaporator under item 9, in which a specified set of channels formed by a set of spaced tubes, and these second and third passages are placed between two adjacent pipes.

11. The evaporator comprising an elongated collector, the combination of spaced smooth tubes, the ends of which are inserted from one side to the specified collector, almost at an equal distance from each other, and the inlet of the specified header, including a certain number exploded injectors, each of which is adapted for connection to a common source of evaporated refrigerant, each of the injectors has an outlet directed away from that side of the specified collector.

12. Evaporator under item 11, in which these ends protrude into the inner part of the said collector, and these injectors are placed between the ends of adjacent pairs of tubes.

13. Evaporator under item 11, in which these outlet openings are the main outlet holes, and each specified injectors, also has more side between the ends of adjacent pairs of tubes.

 

Same patents:

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

The device cooling // 2160879
The invention relates to refrigeration and cooling equipment, and can be used in the construction and reconstruction of cooling equipment refrigeration chambers for food

The invention relates to a method and evaporator deeply refrigerated liquid working medium

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

Up!