Wire-and-tube heat exchanger, method of its production and refrigerator with such heat exchanger

FIELD: heating.

SUBSTANCE: wire-and-tube heat exchanger, in particular, for a domestic refrigerator, comprises two layers of wire and a refrigerant tube passing through the intermediate space between the layers. The intermediate space is filled at least partially with bitumen. The bitumen film is heated and pressed into inside the intermediate space through the gaps between the wires.

EFFECT: improved efficiency of heat exchange between the heat carrying medium and the energy accumulating medium regardless of the mounting position of a heat exchanger, simplified manufacturing.

14 cl, 6 dwg

 

The technical field

This invention relates to a wire-and-tube heat exchanger, in particular for household refrigeration apparatus, with two layers of wire and pipe of a refrigerant in the intermediate space between the layers.

The level of technology

From patent document DE 199 48 480 A1 is known a heat exchanger of this type, which in the intermediate space between the two layers, respectively, between the two parallel sections of pipe of the refrigerant entered the tank, filled environment, accumulating thermal energy. If such a heat exchanger is installed in a refrigerating apparatus, a thermal ballast, which represent these capacity increases the duration of the periods of operation and shutdown of the compressor, which pumps the refrigerant through the refrigerant piping. Such extension phases of the working cycle of the compressor, without a simultaneous increase in the share of periods of compressor operation during all periods of operation of the refrigeration apparatus makes possible a particularly efficient from the point of view of energy cost operation.

In flexible containers to accommodate the environment, accumulating energy, there is the advantage that is provided in close thermal contact between the wire and/or pipe of the refrigerant, on the one hand, and the environment, accumulating energy,on the other hand, however, there is a high risk of leaking containers with improper handling. In addition, containers are well suited for heat exchanger, mounted horizontally, as, for example, the evaporator between the two shelves freezer, but in typical capacitor vertical installation position there is a risk that capacity Scopata in the lower region of the heat exchanger and consequently their effectiveness will be limited.

From the patent document GB 1 110 041 And became known cooling system in which the evaporator to increase the efficiency of accumulation of cold surrounded by sand-bitumen mixture.

The task of the invention to provide such a heat exchanger, which ensures efficient heat exchange between the coolant and the environment, accumulating energy, no matter in what position the heat exchanger is mounted, and which is simple to manufacture.

The problem is solved by wire and tube heat exchanger with signs of paragraph 1. Bitumen by heating easily done plastic, so it's easy to closely pressed to any loop of wire or pipe refrigerant wire-and-tube heat exchanger, and it becomes possible intensive heat exchange between the wires or the refrigerant pipe, on the one hand, and bitumen, on the other hand. At operating temperatures of the heat exchanger in the region have the place in refrigerating apparatus, bitumen is a solid, so unlike fluid-filled containers in this case, there is a danger that the bitumen will move anywhere from the place of its installation.

To ensure close thermal contact at least the first two layers of wire for the most part, i.e. the predominant portion of the length of the wire and/or a predominant part of its surface, preferably sealed in bitumen.

In order not to impair the heat exchange with the environment, the bitumen must have a large free surface. Therefore, the efficiency of the heat exchanger, it is advisable to terminated wire of the first layer was separated on the surface of the bitumen.

In practice, the surface of the bitumen preferably has ribs, which are (plots) wire of the first layer. The size of the portion of ribs protruding relative to the adjacent areas of the surface, in particular relative to the grooves, passing between the corresponding edges must meet at least the diameter of the wire.

The intermediate space between the layers is/ are preferably filled with bitumen on the prevailing side of the square wire-and-tube heat exchanger having the form of a plate.

To bitumen layer was protected from damage, bitumen preferably does not extend past the wire of the second layer.

On the other hand, to achieve the maximum efficiency is aktivnosti energy storage the amount of bitumen is preferably so large the bitumen relates to a wire of the second layer.

The region of the edges of the wire-and-tube heat exchanger having the form of a plate, it is advisable to leave uncovered bitumen, including to reduce the risk of damage to the bituminous layer. This area of the edges may include, in particular, on the edge of the wire sections of the first and second layers and/or those of the parallel sections of the refrigerant pipe, which are farthest outward in every direction.

The subject of the invention is the refrigeration apparatus, in particular a domestic refrigeration device, in which the capacitor on the outer surface of the housing is mounted wire-and-tube heat exchanger described above.

If the bitumen is not the wire of the second layer, such that suitable mounting a wire-and-tube heat exchanger on the body, wherein the second layer wire-and-tube heat exchanger facing opposite from the direction. Then in assembled position bitumen layer is protected from damage.

The preferred method of making the wire-and-tube heat exchanger of the type indicated above includes the following operations:

a) mounting pipe for the refrigerant between two layers of wires;

b) placement of the bitumen film on the outer side of the first layer wires;

c) Prodanova is s, at least part of the bitumen film through the gaps between the wires of the first layer.

As a result of partial rupture of bitumen occurs sealing wire of the first layer in the bituminous layer and thereby a reliable fixing of bitumen on the heat exchanger.

To bring the bitumen in a plastic condition suitable for forcing, it is advisable to heat it. Especially preferred temperature range is between 70 and 90C. it was Found that in this temperature range is achieved strong adhesion of the bitumen with the wire of the first layer without the additional use of adhesive substances. Higher temperatures lead to deterioration of adhesion due to the increasing fluidity of bitumen; lower temperatures require very high clamping effort, which can damage the structure of the wire-and-tube heat exchanger.

To make the heat exchanger when available sizes edges realize most surface of the bitumen layer, through which an intensive heat exchange with the environment, it is advisable to use for jacking bitumen soft pillow that can be bonded sections wire of the first layer. This pillow can be composed in particular of silicone.

A short comment to the figures of drawings

Further characteristics and advantages of the invention follow and the following description of embodiments with reference to the accompanying figures. They show:

figure 1 - exploded view section of the heat exchanger, the bitumen film and stamp;

figure 2 is a plot of the heat exchanger 1 with a depressed bitumen film;

figure 3 is a schematic cross-section of the wire-and-tube heat exchanger before pressing bitumen film according to the second variant embodiment of the invention;

figure 4 is a heat exchanger according to the second variant implementation in the finished compressed state; and

5 is a view of the refrigeration apparatus with heat exchanger according to the invention;

6 is a view of the refrigeration apparatus with heat exchanger according to the invention.

The implementation of the invention

Figure 1 shows in axonometric image area of the wire-and-tube heat exchanger 1 of known construction, with two parallel layers 2, 3 of the wire 2A, 2b, 3A, 3b... and with the pipe 5 of the refrigerant flowing into the intermediate space 4 between the layers 2, 3 in the form of a meander and rigidly connected with the two wire layers 2, 3 by means of spot welding. Above the wire-and-tube heat exchanger is shown a plot of the bitumen film 6.

Above the film 6 shown in a separate plot - stamp 7 with a rigid plate and facing the film 6 cushion 9 of soft material, in particular silicone.

In order to manufacture the heat exchanger according to the invention, the heat exchanger 1, as p is shown in figure 2 in cross-section, housed in a hollow form 10, and the outer arc 11 of the refrigerant pipe 5 and, if necessary, also neighbouring extreme areas 2A, 3A of the wire layers 2, 3 are tightly enclosed in the intermediate space between the parts 12, 13 of the hollow form 10. The length of the edges of the Central free space of the hollow form 10 corresponds to the lengths of the edges of the stamp 7. The width of the bitumen film 6 also corresponds to the width of the hollow form. The length of the bitumen film 6 may be less than the length of the hollow shape and the heat exchanger 1, so that two straight part 18 of the refrigerant pipe 5 on two opposite edges of the essentially rectangular heat exchanger 1 is not covered by the film 6.

Bitumen film 6 is heated in a hollow form 10 to a temperature of about 80C. At this temperature, the bitumen becomes plastic and under the pressure of the stamp 7 penetrates through the gap between the wire layer 2 in the intermediate space 4. Figure 3 represents this situation is similar to figure 1 axonometric image of a fragment of the heat exchanger 1 and the stamp 7, omitting the image of a hollow form 10. Most bitumen is shifted inside the intermediate space 4; however, the threads of the material that passed sections 2b, 2C... wire along their opposite sides, at the rear, facing away from the flow of the wire again merged with each other, so that is arnosti bitumen film 6, next to the layer 3, in the area of hydrodynamic shadow wire only formed a thin groove 14. Because the gap between the two sections of the wire layer 2 bitumen softer than directly over these areas of the wire, the surface of the pads 9 on the bitumen, in the passage of the wire 2A, 2b... and the refrigerant pipe 5 is pressed the corresponding grooves. So on the other side of the wire 2, which is turned into the stamp 7, bitumen is not replaced completely, and between the wire 2b, 2C... and the stamp 7 is a thin layer of bitumen, so that the wire 2b, 2C... is embedded in the bitumen film 6 around the perimeter. As a result of this later, after cooling, a firm fixing of bitumen on the heat exchanger 1.

The surface of the bitumen film 6 facing the stamp 7, due to compression becomes a relief that it is highly desirable to intensify heat exchange with the ambient air. The severity of this relief depends on the pressure of pressure, temperature and flexibility of the cushion 9; it is preferably set such that the tops of the ribs 15 formed in the surface of the bitumen and the surrounding areas of the wire 2, protrude above the surface of the respective recesses 16 between the ribs 15, at least on the magnitude of the diameter of the wire 2.

In the second embodiment of the invention the bitumen film 6, as shown on IG, placed on two sides of the wire-and-tube heat exchanger 1 and when heated press them to each other, resulting in the design of the evaporator shown in section in figure 5. Here the wire both layers 2, 3 of the heat exchanger 1 is essentially its entire surface embedded in bitumen, and in the intermediate space 4 between the layers 2, 3 of the bitumen film 6, is pressed into this intermediate space on both sides, merge with each other. Thanks to the merger of films 6 bitumen securely in the case, when the wire sections 2b, 2C, 3b, 3C... are streamed bitumen not on the whole surface, and in the field of hydrodynamic shadow of the wire 2b, 2C, 3b, 3C... the part of the surface of the wire 2b, 2C, 3b, 3C... remain open gaps 19.

Figure 6 shows the axonometric image household refrigeration apparatus, equipped as capacitor wire-and-tube heat exchanger, which is made in accordance with the method presented in Fig.1-3. The heat exchanger 20 is mounted on the rear wall of the housing 17 of the refrigeration apparatus. Pipe 5 of the refrigerant includes a number of parallel, held horizontally plots pipe 18, which are connected in series arcs 11. Bitumen film 6 is pressed into the heat exchanger 20 from the side adjacent to the rear wall of the housing 17. The length of the edges of the square the NCI 6 is designed so that because the upper and lower sections of the pipe 18, designated 18a respectively, do not come into contact with bitumen. The rest of the pipe 18 in the greater part of their surface filled with bitumen, and in accordance with that presented in the figure only as dashed lines. Wire layer 2 facing the housing 17, figure 6 is not shown; it is completely sealed in bitumen, except for the sections 2A of the wire on the right and left edges of the evaporator, and its ends attached to the outer pipe 18. The thickness of the bitumen film 6 is designed in such a way that in the finished formed state film 6 does not penetrate into the gap between the wire sections 3A, 3b, 3C... layer 3 opposite to the housing 17. These wire sections 3A, 3b, 3C... remain free, in mind and in accordance with that shown in the figure as solid lines. Thus, the bitumen in the finished assembled refrigerating apparatus is protected from damage on one side of the wire layer 3 opposite to the housing 17, and the edges - areas 2A, 3A of the wire layers 2 and 3 or the external pipe 18a. The surface of the heat exchanger facing the housing 17, there bitumen layer is practically devoid of sharp corners and edges that can catch dust. Since bitumen is substantially fills the intermediate space 4, on the opposite body side of the heat exchanger is 1 dust also unlikely to SAG. Therefore, the bitumen layer forms not only a thermal ballast, which can improve the efficiency of the device, prolonging the phase of the working cycle of the compressor, but also limits the formation during operation of the dust layer, the isolating heat exchanger 1 and thereby reduces its effectiveness.

1. Wire-and-tube heat exchanger, in particular for household refrigeration apparatus, with two layers (2; 3) wires (2A, 2b,..., 3A, 3b,...) and the pipe (5) of the refrigerant flowing into the intermediate space (4) between the layers (2; 3), characterized in that the intermediate space (4)at least partially filled with bitumen (6)and bitumen (6)at least partially pressed through the gaps between the wires (2A, 2b...) first layer (2).

2. Wire-and-tube heat exchanger according to claim 1, characterized in that the at least first (2) two layers (2; 3) for the most part embedded in the bitumen (6).

3. Wire-and-tube heat exchanger according to claim 2, characterized in that the sealed wire (2b, 2C...) the first layer (2) are allocated on the surface (14; 15) of bitumen.

4. Wire-and-tube heat exchanger according to claim 3, characterized in that the surface of the bitumen (6) has a rib (15), inside which are the wire (2b, 2C...), and ribs (15) are relative to neighbouring areas (16) surface at least on the value of the diameter of p is boloki (2b, 2C).

5. Wire-and-tube heat exchanger according to one of paragraphs. 1-4, characterized in that the predominant part of the surface of the wire-and-tube heat exchanger having the form of a plate, the intermediate space (4) is entirely filled with bitumen (6).

6. Wire-and-tube heat exchanger according to one of paragraphs. 1-4, characterized in that the bitumen (6) does not protrude wires (3A, 3b,...) the second layer (3).

7. Wire-and-tube heat exchanger according to one of paragraphs. 1-4, characterized in that the bitumen (6) applies to wires of the second layer.

8. Wire-and-tube heat exchanger according to one of paragraphs. 1-4, characterized in that the region of the edges of the wire-and-tube heat exchanger having the form of a plate, free of bitumen.

9. Wire-and-tube heat exchanger according to claim 8, characterized in that the region of the edges contains wires (2A, 3A) of the first and second layers (2; 3) and/or the most remote output sections (18a) of many parallel sections (18) of the pipe (5) of the refrigerant.

10. Refrigerating apparatus, in particular a domestic refrigeration device, with a housing (17) and mounted on the outer surface of the casing of the wire-and-tube heat exchanger (20) according to one of the preceding paragraphs.

11. The refrigeration apparatus of claim 10, wherein the wire-and-tube heat exchanger (20) is a wire-and-tube heat exchanger according to claim 6, and the second layer (3) check lacno-tube heat exchanger (20) facing away from the housing (17) direction.

12. A method of manufacturing a wire-and-tube heat exchanger (20) with the following operations:
a) mounting pipe (5) for the refrigerant between the two layers (2; 3) wires (2A, 2b,...; 3a, 3b,...);
b) placement of a bituminous film (6) on the outer side, at least the first layer (2) wires (2A, 2b,...);
c) punching at least part of the bitumen film (6) through the gaps between the wires (2A, 2b,...) of the first layer (2).

13. The method according to item 12, characterized in that the punching is carried out at a temperature between 70 and 90C.

14. The method according to item 12 or 13, characterized in that the punching shear using an elastic cushion (9), in particular of silicone.



 

Same patents:

Heat exchanger // 2476799

FIELD: power engineering.

SUBSTANCE: heat exchanger comprising a twisted pipeline, supplying a fluid working medium to the heat exchanger, a helical axis of horizontal direction and parts of the twisted pipeline arranged on the top and bottom from the helical axis. In accordance with this invention the helical pipeline provides for a double-section passage circuit, besides, the first passage circuit having large dimensions is designed for the working medium of the heat exchanger, and the second smaller circuit of passage is designed as a ventilation circuit. At the same time for each spiral passage in the upper part of the helical axis on a part of the twisted pipeline there is at least one hole for air exhaust, which connect to each other the first and second passage circuits.

EFFECT: provision of maximum possible ventilation for a heat exchanger with a pipeline of twisted type and a horizontal helical axis.

9 cl, 4 dwg

Heat exchanger // 2451886

FIELD: power engineering.

SUBSTANCE: heat exchanger comprises the first pipe section, helically twisted into the first spiral to let through the first working coolant medium. The first spiral and the second spiral produced from the helically twisted second pipe section are inserted one into the other and connected to each other. Besides, the pipe sections are connected by means of a pipe section stretching between opposite ends of both spirals.

EFFECT: higher efficiency of device application.

9 cl, 12 dwg

FIELD: heating.

SUBSTANCE: thermal compression device includes high pressure gas source connected to cylinders-compressors, device for thermal cycling of cylinders-compressors, of the set of capacities with various temperatures and cold source. Cold source in the form of Dewar vessel, which is filled with cooling agent, is located together with capacities with various temperatures on the installation device. Installation device is fixed with possibility of rotation. Low-temperature capacity is heat insulated, filled with liquid heat carrier and equipped with heat exchanger arranged in heat carrier. Heat exchanger is made in the form of a coil with bifilar winding of the tube and with diametre of the forming winding, which is more than the diametre of the circle enveloping cylinders-compressors. One end of the tube is connected through the side output by means of flexible connection and an adapter to Dewar vessel equipped with pressurisation system. The other tube end is led out to atmosphere. Cylinders-compressors and the source of forming the liquid heat carrier flow to capacities are suspended on the cover of the capacity, which is attached to the bracket in upper part of the support of the lifting mechanism. Lifting mechanism is located together with installation mechanism on the platform equipped with devices for its movement and fixture.

EFFECT: simplifying the design, improving the operation and increasing the efficiency of thermal compression device.

3 cl, 6 dwg

FIELD: heating.

SUBSTANCE: invention relates to the sphere of heating engineering immediately dealing with design of heat exchange elements; proposed is a heat exchanger to be utilised as the evaporator of a refrigerant apparatus such as a household refrigerator or freezer as well as a method for its fabrication. The heat exchanger is fabricated of a support plate, a profiled component manufactured of a thermal insulant and having a groove arranged on its surface and a tube for heat medium circulation that is specially shaped to match the groove path. The heat exchanger fabrication technique envisages the tube being fitted in the profiled component groove and the support plate attached to the profiled component surface the tube is positioned on.

EFFECT: fabrication of high quality heat exchangers even under relatively non-strict requirements to manufacture tolerances.

2 cl, 2 dwg

FIELD: the invention refers to heating engineering and may be used in cooling technique.

SUBSTANCE: the heat exchanger for a refrigerator has a board, a pipeline for cooling medium being in heat conducting contact with the board and a layer of a holding material bounded with the board and the pipeline. The layer of the holding material is of bituminous composition with a stuff, at that the heat capacity of the stuff is larger then the heat capacity of the bitumen. The heat exchanger is manufactured by way of forming a foot consisting of a board, a pipeline and a plate out of bituminous composition, at that out of the plate by heating and pressing the packet they form a layer of holding material. At such execution the heat exchanger may be easily utilized.

EFFECT: provides firm joining of the layers of holding material with the board.

12 cl, 5 dwg

FIELD: heavy industry, applicable for cooling of circulating water of industrial enterprises.

SUBSTANCE: the heat-exchange apparatus has several cooling stages, each of them being made in the form of sections having a zigzag radiator, blow fan supplying the air flow directly to the zigzag supplying pipeline, and offtakes, and the rate of flow of cooling air produced by the blow fan is controlled with the aid of an induction motor fed and controlled by a frequency converter depending on the signal running from the temperature-sensitive element installed past the heater; the cooling stages are changed over with the aid of an automatic cooling water temperature control system.

EFFECT: reduced labor content of production, provided maintenance of the temperature of the heat-transfer agent within a preset range with the aid of a monitoring system.

2 dwg

FIELD: heat engineering devices.

SUBSTANCE: the recuperative heat exchanger has rigidly fastened tube plates with tubes installed in them in concentric circles, the tube cavities communicate with one another for supply of the heat-transfer agent, connections for supply and discharge of the heat-transfer agent by means of which the tube cavities are connected, the heat exchanger has intermediate tubes, the cavity of each tube communicates with the cavities of the two adjacent tubes by means of two branches, and the cavities of the delivery and discharge branches communicate with the cavities of the first and last tube of the formed tube coil, the interaxial distance between the last and first tubes in the adjacent concentric circles equals the interaxial distance of the branches, the length of the tubes installed in the adjacent concentric circles differs by the value equal or exceeding the size of the branches fastened on the tubes. Besides, pouring holes are made in the tube plates for communication of the cavities between the plates, the heat exchanger is provided with a perforated or cellular casing and lugs fastened on the plates, it is also provided with a perforated tube with a connection for discharge of the heated heat-transfer agent, it is installed in the holes heat-transfer agent, it is installed in the holes made in the center of the tube plates.

EFFECT: produced recuperative heat exchanger for heat-up of the liquid discharge zone in tanks with petroleum products.

4 cl, 4 dwg

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

FIELD: heating.

SUBSTANCE: refrigerating circuit (3) for household appliances comprises the first heat exchanger (5) or a condenser, which is in flowing communication with a compressor (4) to ensure cooling and further condensation of cooling fluid passing through them, and the second heat exchanger (7) or an evaporator, which is in flowing communication with the first heat exchanger (5) via a circuit with a special device (6), made as capable to reduce pressure of the cooling fluid in the space (2) designed for cooling. The second heat exchanger (7) provides for evaporation of cooling fluid, heat absorption, cooling the space (2), and return of the cooling fluid via a tube (17) to the compressor (4). At least one of heat exchangers (5, 7) comprises a plastic tube (9), at least a part of which has such corrugated profile that it transfers its flexibility to the entire tube and/or increases heat-exchange surface. The tube (9) comprises at least two layers (S1, S2) imposed one onto the other, besides, preferably both layers are made of plastic. The first layer (S1) of the material is impermeable for a cooling fluid and/or non-condensed gases, and the second layer (S2) is impermeable for moisture.

EFFECT: using the invention will make it possible to ensure high flexibility of a cooling device in various directions and high tightness.

16 cl, 27 dwg, 1 tbl

FIELD: power engineering.

SUBSTANCE: in a heat exchange device for a refrigerating unit with a pipeline installed on a heat insulation substrate, the pipeline is formed as continuous and separated with a throttling point to an evaporator and a condenser, at the same time the substrate is made of two plane sections connected by a bent connection element, and so that the evaporator is installed on the first section, and the condenser - on the second one.

EFFECT: development of a heat exchange device for a refrigerating unit, the design of which makes it possible to reduce costs for building a coolant circulation circuit.

9 cl, 4 dwg

FIELD: heating systems.

SUBSTANCE: invention refers to refrigerating equipment. Steam-water ejecting refrigerating machine includes horizontal evaporator, condenser and ejectors, which are located perpendicular to longitudinal axes of these devices and above these devices. On upper part of evaporator housing there fixed is suction chamber with flat vertical front and rear walls, which is interconnected with inner evaporator volume through the openings made in its housing. On upper part of condenser housing there installed is receiving chamber with flat vertical front wall and steam baffle plate made in the form of rear wall curved radially outwards. Receiving chamber is interconnected with inter-tube space of condenser through the opening made in its housing. Ejector nozzles are installed on front wall of suction chamber. Diffusers of ejectors are fixed in rear wall of suction chamber and front wall of receiving chamber. Space between housings of evaporator and condenser, including diffusers of ejectors, is enclosed in an intermediate tight chamber connecting evaporator, condenser, suction chamber and receiving chamber to each other, thus forming a single unit. Holes interconnecting inter-tube space of air cooler to cavity of intermediate chamber are located in air cooler area of condenser along its housing. Intermediate chamber is equipped with a branch pipe to be connected to air ejecting device.

EFFECT: increasing economy, reliability, reducing manufacturing labour input, specific flow of working steam, noise emission to environment, and reducing dates and costs of erection, service during operation and repair.

3 cl, 3 dwg

FIELD: heating, refrigeration art.

SUBSTANCE: invention refers to a heat exchanger such as an evaporator, a condenser for a refrigerator, as well as to a method for fabricating the same. Said heat exchanger for refrigerators comprises a board and a refrigerant-carrying tubing that is in thermally conductive contact with said board and with a retaining material layer being attached to said tubing. The retaining material layer consists of a bitumen compound and it is bonded to the board by an adhesive layer. The tubing has a flattened cross-section. The adhesive layer consists of a heat-activated adhesive. The bitumen compound contains from 50% to 80% of a filler. Stone powder is used as said filler. A coat of varnish is applied to the retaining material layer face that is opposite the board. An average thickness of the retaining material layer is of 0.5 to 2 mm, and preferably of 1.0 to 1.5 mm. The method for fabricating such a heat exchanger, in particular its evaporator or condenser, includes the following steps: forming a package comprising board, refrigerant-carrying tubing and plate of bitumen compound, heating said plate and pressing said package together. The board, tubing and bitumen compound plate are laid up in the above said order.

EFFECT: providing an inexpensive heat exchanger with improved performance.

9 cl, 5 dwg

FIELD: the invention refers to heating engineering and may be used in cooling technique.

SUBSTANCE: the heat exchanger for a refrigerator has a board, a pipeline for cooling medium being in heat conducting contact with the board and a layer of a holding material bounded with the board and the pipeline. The layer of the holding material is of bituminous composition with a stuff, at that the heat capacity of the stuff is larger then the heat capacity of the bitumen. The heat exchanger is manufactured by way of forming a foot consisting of a board, a pipeline and a plate out of bituminous composition, at that out of the plate by heating and pressing the packet they form a layer of holding material. At such execution the heat exchanger may be easily utilized.

EFFECT: provides firm joining of the layers of holding material with the board.

12 cl, 5 dwg

The invention relates to refrigeration, namely the heat-exchange apparatus of refrigerating machines and installations, and can be used in refrigerating machines and installations used in all fields of technology, as well as in other branches of engineering, where the condensation of the vapor of the working fluid at a temperature close to ambient temperature

The invention relates to the field of power engineering, in particular to the heat transfer equipment working under boiling and condensation of the working environments, and can be used in installations of low-temperature air separation

FIELD: the invention refers to heating engineering and may be used in cooling technique.

SUBSTANCE: the heat exchanger for a refrigerator has a board, a pipeline for cooling medium being in heat conducting contact with the board and a layer of a holding material bounded with the board and the pipeline. The layer of the holding material is of bituminous composition with a stuff, at that the heat capacity of the stuff is larger then the heat capacity of the bitumen. The heat exchanger is manufactured by way of forming a foot consisting of a board, a pipeline and a plate out of bituminous composition, at that out of the plate by heating and pressing the packet they form a layer of holding material. At such execution the heat exchanger may be easily utilized.

EFFECT: provides firm joining of the layers of holding material with the board.

12 cl, 5 dwg

FIELD: heating, refrigeration art.

SUBSTANCE: invention refers to a heat exchanger such as an evaporator, a condenser for a refrigerator, as well as to a method for fabricating the same. Said heat exchanger for refrigerators comprises a board and a refrigerant-carrying tubing that is in thermally conductive contact with said board and with a retaining material layer being attached to said tubing. The retaining material layer consists of a bitumen compound and it is bonded to the board by an adhesive layer. The tubing has a flattened cross-section. The adhesive layer consists of a heat-activated adhesive. The bitumen compound contains from 50% to 80% of a filler. Stone powder is used as said filler. A coat of varnish is applied to the retaining material layer face that is opposite the board. An average thickness of the retaining material layer is of 0.5 to 2 mm, and preferably of 1.0 to 1.5 mm. The method for fabricating such a heat exchanger, in particular its evaporator or condenser, includes the following steps: forming a package comprising board, refrigerant-carrying tubing and plate of bitumen compound, heating said plate and pressing said package together. The board, tubing and bitumen compound plate are laid up in the above said order.

EFFECT: providing an inexpensive heat exchanger with improved performance.

9 cl, 5 dwg

FIELD: heating systems.

SUBSTANCE: invention refers to refrigerating equipment. Steam-water ejecting refrigerating machine includes horizontal evaporator, condenser and ejectors, which are located perpendicular to longitudinal axes of these devices and above these devices. On upper part of evaporator housing there fixed is suction chamber with flat vertical front and rear walls, which is interconnected with inner evaporator volume through the openings made in its housing. On upper part of condenser housing there installed is receiving chamber with flat vertical front wall and steam baffle plate made in the form of rear wall curved radially outwards. Receiving chamber is interconnected with inter-tube space of condenser through the opening made in its housing. Ejector nozzles are installed on front wall of suction chamber. Diffusers of ejectors are fixed in rear wall of suction chamber and front wall of receiving chamber. Space between housings of evaporator and condenser, including diffusers of ejectors, is enclosed in an intermediate tight chamber connecting evaporator, condenser, suction chamber and receiving chamber to each other, thus forming a single unit. Holes interconnecting inter-tube space of air cooler to cavity of intermediate chamber are located in air cooler area of condenser along its housing. Intermediate chamber is equipped with a branch pipe to be connected to air ejecting device.

EFFECT: increasing economy, reliability, reducing manufacturing labour input, specific flow of working steam, noise emission to environment, and reducing dates and costs of erection, service during operation and repair.

3 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: in a heat exchange device for a refrigerating unit with a pipeline installed on a heat insulation substrate, the pipeline is formed as continuous and separated with a throttling point to an evaporator and a condenser, at the same time the substrate is made of two plane sections connected by a bent connection element, and so that the evaporator is installed on the first section, and the condenser - on the second one.

EFFECT: development of a heat exchange device for a refrigerating unit, the design of which makes it possible to reduce costs for building a coolant circulation circuit.

9 cl, 4 dwg

Up!