Refrigerating device

Abstract

The utility model provides a refrigeration device. The refrigeration device comprises an evaporation plate and a capillary tube mechanism, a refrigeration pipeline formed in a blowing mode is arranged in the evaporation plate; according to the flowing path of a refrigerant, the refrigeration pipeline sequentially comprises a pipeline connector, a slender pipe, a reducing pipe, an evaporation pipeline and a backflow pipe, and the backflow pipe is connected into the slender pipe. The capillary tube mechanism comprises a capillary tube bundle and a sleeve, the capillary tube bundle is sleeved with the sleeve, and the capillary tube bundle is inserted into the slender tube through the pipeline connector; the near end of the sleeve covers the pipeline connector and is fixedly connected with the evaporation plate. According to the utility model, the capillary tube bundle and the sleeve form an inner and outer sleeve structure, a refrigerant flows in and out, and a liquid refrigerant flowing in the capillary tube is cooled by a gas refrigerant gas flowing back, so that the refrigeration efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to a refrigeration device. Background Art

[0002] The inflation evaporator is an evaporator made of double-layer aluminum plates. Usually, after the surface of aluminum plates of certain specifications are treated, the pattern of evaporation pipes is printed on the mating surface of the aluminum plates. The composite panels are welded according to the pattern, and after heat treatment such as hot rolling, they are finally inflated with nitrogen.

[0003] Chinese Patent No. 201310074504.3 discloses a blowing evaporator and refrigeration equipment. The blowing evaporator includes an evaporation plate and a refrigeration pipeline formed thereon by an inflation method. The refrigeration pipeline includes a capillary tube, an evaporation area and a liquid return area. A silencer component is provided between the capillary tube and the evaporation area. The silencer component includes a slender silencer tube and a bell-shaped pipeline connected thereto. The slender silencer tube is connected to the capillary tube, and the bell-shaped pipeline is connected to the refrigeration pipeline of the evaporation area.

[0004] Chinese patent 201320734305.6 discloses an inflation evaporator, comprising a body, a groove provided on the surface of the body, a slit provided on the bottom wall of the groove, and the bottom walls on both sides of the slit are separated by a certain distance h in the vertical direction.

[0005] Chinese patent application 201210584705.3 discloses an inflation evaporator and a refrigerator having the same. The inflation evaporator comprises a body, an upper surface of the body is provided with a groove, and a bottom wall of the groove is provided with a through hole that passes through the body in the vertical direction.

[0006] The refrigerant gas temperature leaving the evaporator is roughly between -10 and 10°C, while the compressor inlet temperature requirement is between 25 and 40°C. If the inlet temperature is too low, the compressor will experience liquid hammer, seriously shortening the compressor's lifespan. If the inlet temperature is too high, the compressor's internal windings will reach even higher temperatures, causing them to break down and render the compressor useless. Summary of the Invention

[0007] In view of the defects of the prior art, the utility model provides a refrigeration device with high refrigeration efficiency.

[0008] The technical solution adopted by the utility model to solve the technical problem is specifically: a refrigeration device, which includes an evaporation plate and a capillary mechanism;

[0009] A refrigeration pipeline formed by inflation is provided inside the evaporator plate. According to the flow path of the refrigerant, the refrigeration pipeline includes a pipeline interface, a slender tube, a tapered tube (such as a bell tube), an evaporation pipeline, and a return pipe. The return pipe is connected to the slender tube.

[0010] The capillary mechanism includes a capillary tube bundle and a sleeve. The sleeve is sleeved outside the capillary tube bundle, and the capillary tube bundle is inserted into the slender tube through the pipeline interface. The proximal end of the sleeve (the end close to the evaporation plate) covers the pipeline interface and is fixedly connected to the evaporation plate.

[0011] The capillary tube bundle is directly inserted into the evaporator's pipe connection. Because the volume of the pipe at the connection is larger than the volume of the capillary tube, the refrigerant (liquid refrigerant) injected at the connection will evaporate and expand into gas in an instant, easily forming gas vortices and causing noise. The use of a tapered tube in this utility model can achieve noise reduction.

[0012] In the present invention, the capillary tube bundle and the sleeve form an inner-outer sleeve structure, and the refrigerant flows in and out. The liquid refrigerant flowing into the capillary tube will be cooled (i.e., supercooled) by the returning gaseous refrigerant, which can effectively improve the refrigeration efficiency.

[0013] According to another embodiment of the present invention, the capillary tube bundle is connected to the inner wall of the elongated tube via a weld; the weld blocks the flow path between the capillary tube bundle and the elongated tube. This allows refrigerant in the return pipe to flow back to the casing, whereupon all the refrigerant gas enters the compressor, completing the refrigeration cycle.

[0014] According to another specific embodiment of the present invention, the refrigerant enters the refrigeration pipeline from the capillary tube bundle and flows out of the sleeve through the return pipe.

[0015] According to another specific embodiment of the present invention, the return pipe is connected to the slender pipe, and the interface between the two is in a "T" shape.

[0016] According to another embodiment of the present invention, a plurality of blind-hole grooves are printed on one side of the evaporator plate. By printing the grooves on the side of the evaporator plate, the space for the refrigeration pipeline within the evaporator plate can be compressed, making the refrigeration pipeline thinner and narrower, thereby extending the residence time of the refrigerant within the evaporator plate, increasing the evaporation area, and thus improving the cooling effect of the evaporator.

[0017] According to another specific embodiment of the present invention, a plurality of blind hole grooves are printed on both sides of the evaporation plate.

[0018] According to another specific embodiment of the present invention, the refrigeration device further includes a fan, an air guide plate, and an inner tank; the evaporation plate, the fan, and the air guide plate are all located inside the inner tank; the evaporation plate is located between the air guide plate and the back plate of the inner tank; the fan is mounted on the air guide plate, and a ventilation hole area is provided on the air guide plate, and a plurality of ventilation holes are provided in the ventilation hole area. The evaporation plate is located directly behind the ventilation hole area. In the prior art, most of the blowing evaporators of direct cooling wine cabinets do not have fans, and the cold air naturally sinks, and the temperature of the lower half of the inner tank is lower than that of the upper part, resulting in uneven temperature distribution in the inner tank and easy frost on the blowing evaporator. In this solution, the fan sends air into the inner tank, and the airflow inside the inner tank flows backward through the ventilation hole area on the air guide plate, which can blow the evaporation plate installed behind the air guide plate. This not only improves the heat exchange efficiency of the evaporator surface and reduces energy consumption, but also makes the box temperature more uniform and reduces the downtime for defrosting.

[0019] According to another specific embodiment of the present invention, the fan is installed in the center of the top of the air guide plate, and the ventilation hole area is located below the middle of the air guide plate (for example, the middle, lower or bottom).

[0020] According to another embodiment of the present invention, the ventilation holes are in the shape of strips, squares, diamonds, leaves or fish scales. The purpose of various shapes is to meet the requirements of temperature uniformity and appearance of various boxes.

[0021] The utility model has the following beneficial effects:

[0022] 1. The capillary tube bundle and the sleeve form an inner and outer sleeve structure, and the refrigerant flows in and out. The liquid refrigerant flowing into the capillary tube is cooled by the returning gaseous refrigerant (i.e., supercooled), which can effectively improve the refrigeration efficiency;

[0023] 2. By printing grooves on the side of the evaporator plate, the space of the refrigeration pipeline in the evaporator plate can be compressed, making the refrigeration pipeline thinner and narrower, thereby extending the residence time of the refrigerant in the evaporator plate, increasing the evaporation area, and thus improving the cooling effect of the evaporator;

[0024] 3. The air flow inside the inner tank flows backward through the ventilation hole area on the air guide plate, which can blow the evaporator plate installed behind the air guide plate. This not only improves the heat exchange efficiency of the evaporator surface and reduces energy consumption; it also makes the box temperature more uniform and reduces the downtime for defrosting.

[0025] The present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the evaporation plate and capillary mechanism in Example 1 of the present utility model;

[0027] Figure 2This is an exploded schematic diagram of the evaporation plate, fan, air guide plate, and inner tank in Example 2 of the present utility model;

[0028] Figure 3 It is a structural schematic diagram of the evaporation plate in Example 2 of the present utility model. DETAILED DESCRIPTION

[0029] Example 1

[0030] This embodiment provides a refrigeration device, which includes an evaporation plate 1 and a capillary mechanism 2 (such as Figure 1 shown).

[0031] A refrigeration pipeline formed by inflation is provided in the evaporation plate 1; according to the flow path of the refrigerant, the refrigeration pipeline includes a pipeline interface 101, a slender tube 102, a tapered tube 103, an evaporation pipeline, and a return pipe 104 in sequence, and the return pipe 104 is connected to the slender tube 102.

[0032] The capillary tube mechanism 2 comprises a capillary tube bundle 201 and a sleeve 202. The sleeve 202 is inserted into the capillary tube bundle 201 through the pipe interface 101 and into the elongated tube 102. The capillary tube bundle 201 is connected to the inner wall of the elongated tube 102 via a weld 203. The flow path between the capillary tube bundle 201 and the elongated tube 102 is blocked by the weld 203. The proximal end of the sleeve 202 covers the pipe interface 101 and is fixedly connected to the evaporator plate 1. Refrigerant enters the refrigeration pipeline from the capillary tube bundle 201 and flows out of the sleeve 202 through the return pipe 104. The return pipe 104 connects to the elongated tube 102, and the interface between the two forms a "T" shape.

[0033] A plurality of blind hole grooves 105 are printed on both sides of the evaporation plate 1 .

[0034] Example 2

[0035] This embodiment provides a refrigeration device, such as Figure 2-Figure 3 As shown, it includes an evaporator plate 3, a fan 4, an air guide plate 5, and an inner container 6. The evaporator plate 3, fan 4, and air guide plate 5 are all located within the inner container 6; the evaporator plate 3 is located between the air guide plate 5 and the back panel of the inner container 6; the fan 4 is mounted in the center of the top of the air guide plate 5. The air guide plate 5 is provided with a ventilation hole area 51, which is located at the bottom of the air guide plate 5 and has two rows of ventilation holes 501. The evaporator plate 3 is located directly behind the ventilation hole area 501. Several blind hole grooves 301 are printed on both sides of the evaporator plate 3.

[0036] Although the present invention is disclosed above with reference to preferred embodiments, it is not intended to limit the scope of the present invention. Any person skilled in the art may make slight modifications without departing from the scope of the present invention. In other words, any equivalent modifications made in accordance with the present invention shall be covered by the scope of the present invention.

Claims

1. A refrigeration device comprising an evaporation plate and a capillary mechanism; characterized in that: A refrigeration pipeline formed by inflation is provided in the evaporation plate; according to the flow path of the refrigerant, the refrigeration pipeline includes a pipeline interface, a slender tube, a tapered tube, an evaporation pipeline, and a return pipe in sequence, and the return pipe is connected to the slender tube; The capillary mechanism includes a capillary tube bundle and a sleeve. The sleeve is sleeved outside the capillary tube bundle. The capillary tube bundle is inserted into the slender tube through the pipeline interface. The proximal end of the sleeve covers the pipeline interface and is fixedly connected to the evaporation plate.

2. The refrigeration device according to claim 1, wherein The capillary tube bundle is connected to the inner wall of the slender tube through a welding spot; the flow path between the capillary tube bundle and the slender tube is blocked by the welding spot.

3. The refrigeration device according to claim 2, wherein: The refrigerant enters the refrigeration pipeline from the capillary tube bundle and flows out from the sleeve through the return pipe.

4. The refrigeration device according to claim 1, wherein The return pipe is connected to the slender pipe, and the interface between the two is in a "T" shape.

5. The refrigeration device according to claim 1, wherein: A plurality of blind hole grooves are printed on one side of the evaporation plate.

6. The refrigeration device according to claim 1, wherein: A plurality of blind hole grooves are printed on both sides of the evaporation plate.

7. The refrigeration device according to claim 1, wherein: The refrigeration device further includes a fan, an air guide plate, and an inner container; the evaporation plate, the fan, and the air guide plate are all located inside the inner container; the evaporation plate is located between the air guide plate and the back plate of the inner container; the fan is installed on the air guide plate, and a ventilation hole area is provided on the air guide plate, and the ventilation hole area is provided with a plurality of ventilation holes; the evaporation plate is located directly behind the ventilation hole area.

8. The refrigeration device according to claim 7, wherein: The fan is installed in the center of the top of the air guide plate, and the ventilation hole area is located below the middle of the air guide plate.

9. The refrigeration device according to claim 7, wherein: The ventilation holes are in the shape of strips, squares, diamonds, leaves or fish scales.

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