Refrigerator liner and refrigerator

Abstract

The utility model discloses a refrigerator inner container and a refrigerator, the refrigerator inner container comprises an inner container main body and a runner plate, and the runner plate covers the outer part of the inner container main body and is fixed in a welding mode; s-shaped grooves are punched in the runner plates, openings of the grooves face the inner container body, and evaporation runners allowing refrigerants to circulate are formed between the grooves and the outer wall of the inner container body. The refrigerator comprises a shell, a compressor, a condenser, a throttling element and a refrigerator inner container, the compressor, the condenser, the throttling element and an evaporation flow channel are sequentially connected through a refrigerant pipeline, an inlet of the evaporation flow channel is connected with the throttling element, an outlet of the evaporation flow channel is connected with the compressor, and therefore a refrigerant circulation loop is formed. The evaporator and the inner container in a traditional refrigerator structure are ingeniously combined into a whole, production and processing are easy, refrigerants make direct contact with the inner container body, the heat exchange area is large, heat transfer heat resistance is small, the heat exchange effect can be effectively improved, the refrigeration efficiency of the refrigerator is improved, and refrigeration energy consumption of the refrigerator is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigerators, and in particular relates to a refrigerator liner and a refrigerator. Background Art

[0002] Refrigerators are a common appliance in daily life. There is a compressor inside the refrigerator. When it is running, the compressor sucks in refrigerant (ammonia, Freon, etc.) and compresses it into high-pressure gas. In this process, the pressure and temperature of the refrigerant increase; the high-temperature and high-pressure refrigerant enters the condenser, which is usually a tubular device located on the back or side of the refrigerator. There are many metal tubes inside, which allow the refrigerant to dissipate heat. The temperature of the refrigerant is reduced by heat exchange with the outside air and condensed into a high-pressure liquid; the high-pressure liquid refrigerant enters the evaporator after throttling and depressurization. The evaporator is a tubular device located inside the refrigerator. In the evaporator, the pressure of the refrigerant is reduced, and it is transformed from liquid refrigerant to low-pressure vapor. At the same time, it absorbs a large amount of heat inside the refrigerator, and the food and drinks placed in the refrigerator are also cooled; finally, the low-pressure vapor refrigerant enters the compressor again and repeats the compression-expansion cycle.

[0003] At present, the evaporators commonly used in refrigerators on the market mainly include: inflation evaporator, wire tube evaporator, tube-sheet evaporator, etc. Among them, the tube-sheet evaporator is the most widely used.

[0004] The existing refrigerator tube plate evaporator includes a heat transfer plate and an evaporation tube. The serpentine evaporation tube is fixed on the heat transfer plate by using adhesive or adhesive aluminum foil, and then the heat transfer plate is set on the outer wall of the refrigerator inner tank. The heat transfer plate, evaporation tube and inner tank are independent parts assembled together, which is troublesome to process and assemble, and the heat transfer thermal resistance is large. Since the evaporation tube is a circular tube, its contact with the heat transfer plate is linear contact. Although the adhesive aluminum foil covers a part of the tube wall and the surface of the heat transfer plate, it still cannot effectively improve the problem of small contact area between the circular evaporation tube and the heat transfer plate. The heat transfer plate often has warping and deformation, poor flatness, and further reduces the contact area between the evaporation tube and the heat transfer plate, greatly reducing the heat exchange effect and seriously affecting the refrigeration efficiency of the refrigerator. Utility Model Content

[0005] The utility model is developed to solve the above-mentioned problem, and aims to provide a refrigerator liner and a refrigerator.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A refrigerator liner, comprising an liner body and a flow channel plate, wherein:

[0008] The flow channel plate is coated on the outside of the inner tank body and fixed by welding;

[0009] The runner plate is stamped with serpentine grooves, and the notch of the groove faces the inner tank body. An evaporation flow channel for refrigerant circulation is formed between the groove and the outer wall of the inner tank body.

[0010] Further, the inner tank body is square and is formed by bending and welding an aluminum plate;

[0011] The runner plate is arranged on one or more sides of the inner tank body, and the size of the runner plate is adapted to the size of the inner tank body.

[0012] Preferably, the runner plate is bent and wrapped around the four outer sides of the inner tank body in accordance with the shape of the inner tank body.

[0013] Further, the raw material of the runner plate is an aluminum plate, and it is connected to the inner tank body by brazing.

[0014] Preferably, the surface of the runner plate is cold-rolled with a composite layer of filler metal and is fixed to the inner tank body by welding in a vacuum brazing furnace;

[0015] Alternatively, a brazing flux is sprayed on the welding surface of the runner plate, and it is fixed to the inner tank body by welding in a tunnel furnace.

[0016] Preferably, the cross-section of the groove on the runner plate is in the shape of a "Ji" character.

[0017] Further, the evaporation flow channel includes an inlet section, a main body section, and an outlet section. The cross-section of the groove at the inlet section and the outlet section is arc-shaped, and the diameter is adapted to the pipe diameter of the refrigerant pipeline in the refrigerator.

[0018] Further, the inlet and outlet of the evaporation flow channel are connected and sealed with the ports of the refrigerant pipeline by welding.

[0019] Further, in the main body section of the evaporation flow channel, the cross-section of the groove is a flat trapezoid, and the width of the notch is greater than the width of the bottom of the groove;

[0020] Both ends of the main body section are gradually transitioned to the inlet section and the outlet section respectively.

[0021] A refrigerator includes a housing, a compressor, a condenser, and a throttling element, and further includes: the above-mentioned refrigerator inner tank,

[0022] The compressor, the condenser, the throttling element, and the evaporation flow channel are sequentially connected by a refrigerant pipeline. The inlet of the evaporation flow channel is connected to the throttling element, and the outlet is connected to the compressor to form a refrigerant circulation loop.

[0023] Compared with the prior art, the present utility model has the following beneficial effects:

[0024] 1. The refrigerator liner and refrigerator of the utility model skillfully combine the evaporator and the liner in the traditional refrigerator structure into one, and the refrigerant directly contacts the liner body to achieve heat exchange, eliminating the middle layer, with a large heat exchange area and a small heat transfer resistance. The heat exchange effect between the refrigerant in the evaporation flow channel and the storage space in the refrigerator can be effectively improved, the refrigeration efficiency of the refrigerator is improved, and the refrigeration energy consumption of the refrigerator is reduced.

[0025] 2. The refrigerator liner and the overall structure of the refrigerator of the utility model are simple, the manufacturing process is simple, easy to produce and process, fewer steps, lower cost, and the dimensional accuracy of parts is easier to ensure.

[0026] 3. In the refrigerator liner and refrigerator of the utility model, the groove on the flow channel plate is made by stamping. The stamping process can ensure the flatness of the remaining flat plate part outside the groove on the flow channel plate, so that the flow channel plate can fit closely with the liner, ensuring the sealing of the evaporation flow channel and reducing the risk of refrigerant leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of a refrigerator liner of Example 1;

[0028] Figure 2 is a schematic structural diagram of the inner liner body in Example 1;

[0029] Figure 3 is a schematic structural diagram of the flow channel plate in Example 1;

[0030] Figure 4 is a top view of the flow channel plate in the flattened state in Example 1;

[0031] Figure 5 is a cross-sectional view of a side wall of a refrigerator liner in Example 1;

[0032] Figure 6 is a schematic diagram of a partial structure of the flow channel plate in Example 2;

[0033] Figure 7 is a cross-sectional view of the main section of the evaporation flow channel in Example 2;

[0034] Figure 8 It is a cross-sectional view of the inlet section / outlet section of the evaporation flow channel in Example 2.

[0035] Figure Number:

[0036] 10- liner body, 20- channel plate, 21- groove, 30- evaporation channel, 31- inlet section, 32- main section, 33- outlet section. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following embodiments are combined with the accompanying drawings to specifically illustrate the refrigerator liner and the refrigerator of the present invention.

[0038] Example 1

[0039] like Figures 1 to 5 As shown, this embodiment provides a refrigerator liner, including a liner body 10 and a flow channel plate 20, wherein the flow channel plate 20 is coated on the outside of the liner body 10 and fixed by welding, and a serpentine groove 21 is stamped on the flow channel plate 20, and the groove 21 is notched toward the liner body 10, and an evaporation flow channel 30 for refrigerant to flow is formed between the groove 21 and the outer wall of the liner body 10.

[0040] Specifically, the flow channel plate 20 and the groove 21 thereon can be integrally formed by stamping, which has a simple manufacturing process, fewer steps, lower cost, and easier to ensure the dimensional accuracy of the parts. Moreover, the stamping process can also ensure the flatness of the remaining flat plate portion outside the groove 21 on the flow channel plate 20, so that the flow channel plate 20 can fit tightly with the side wall of the inner tank, ensuring the sealing of the evaporation flow channel 30 and reducing the risk of refrigerant leakage. The refrigerant directly contacts the inner tank of the refrigerator to achieve heat exchange, eliminating the middle layer, reducing the heat transfer resistance, and greatly improving the heat dissipation efficiency of the inner tank.

[0041] Furthermore, the liner body 10 is square and is formed by bending and welding an aluminum plate. The size of the flow channel plate 20 is adapted to the size of the liner body 10, the height of the flow channel plate 20 is consistent with the height of the liner body 10, and the width is determined according to the side width of the liner body 10. In practical applications, the flow channel plate 20 can be set on one or more sides of the liner body 10 as needed. In this embodiment, in order to achieve a better cooling effect, the flow channel plate 20 is bent to fit the shape of the liner body 10 and is coated on the four outer sides of the liner body 10, so that the temperature of the liner body 10 is more uniform.

[0042] Furthermore, the raw material of the flow channel plate 20 is an aluminum plate, which is connected to the liner body 10 by brazing. Specifically, the surface of the flow channel plate 20 is cold-rolled with a composite layer of brazing material, and is fixed to the liner body 10 by welding in a vacuum brazing furnace; or, the welding surface of the flow channel plate 20 is sprayed with brazing flux, and is fixed to the liner body 10 by welding in a tunnel furnace. During actual processing, in order to ensure the welding effect, the flow channel plate 20 can be bent according to the shape of the liner body 10 and then wrapped around the liner body 10. Before brazing, it is temporarily fixed with a clamp so that the surface of the remaining flat plate part of the flow channel plate 20 except the groove 21 is completely in contact with the outer wall surface of the liner body 10. Except for the part of the groove 21, all parts of the flow channel plate 20 are welding surfaces, the welding area accounts for a large proportion, the brazing welding rate requirement is low, and the product qualification rate is higher.

[0043] Furthermore, the cross section of the groove 21 on the flow channel plate 20 is in the shape of a Chinese character "J", so that the refrigerant fluid can flow smoothly in the flow channel while maintaining a large contact area with the inner tank body 10 to achieve efficient heat exchange. In actual application, the cross-sectional shape can be designed and determined according to specific heat exchange requirements, refrigerant flow rate requirements and other conditions.

[0044] Example 2

[0045] This embodiment provides a refrigerator liner. For ease of expression, in Embodiment 2, the same symbols are given to the same structures as in Embodiment 1, and the same descriptions are omitted.

[0046] In Embodiment 1, the groove 21 is a groove 21 of uniform cross-section with a “J”-shaped cross section.

[0047] In this embodiment, if Figure 6 As shown, the groove 21 is a variable cross-section groove 21, and the evaporation flow channel 30 includes an inlet section 31, a main section 32 and an outlet section 33. Figure 7 As shown, in the main section 32 of the evaporation channel 30, the cross-section of the groove 21 is a flat trapezoid, and the width of the groove is greater than the width of the groove bottom. Compared with the grooves 21 of the same cross-sectional area in the shape of a circle, square, etc., the flat trapezoidal groove 21 can make the contact surface between the refrigerant in the channel and the inner tank body 10 larger, and the heat exchange efficiency is higher. The two ends of the main section 32 are gradually transitioned to the inlet section 31 and the outlet section 33 respectively. The inlet section 31 and the outlet section 33 are structurally the same. Of the two sections of the flow channel connected to the two ends of the main section 32, any one section can be used as the inlet section 31, and the other section can be used as the outlet section 33. In actual application, the inlet and outlet positions of the evaporation channel 30 can be specifically determined according to other components in the refrigerator and the position of the refrigerant pipeline. As shown Figure 8 As shown, the cross section of the groove 21 at the inlet section 31 and the outlet section 33 is an arc shape, and the diameter is adapted to the diameter of the refrigerant pipeline of the refrigerator refrigeration system, which is convenient for connecting with the refrigerant pipeline. In this embodiment, the inlet and outlet of the evaporation channel 30 are connected and sealed with the refrigerant pipeline port by welding. In actual applications, according to specific design conditions, multiple sections with different cross sections can also be set in the evaporation channel 30 to meet different heat exchange requirements or assembly requirements.

[0048] Example 3

[0049] This embodiment provides a refrigerator, including a shell, a compressor, a condenser, a throttling element (capillary tube, expansion valve, etc.) and the refrigerator liner of embodiment 1 or embodiment 2.

[0050] The compressor, the condenser, the throttling element and the evaporation channel 30 are connected in sequence through a refrigerant pipeline, the inlet of the evaporation channel 30 is connected to the throttling element, and the outlet of the evaporation channel 30 is connected to the compressor, thereby forming a refrigerant circulation loop.

[0051] When the refrigerator is working, the compressor compresses the sucked refrigerant into high-pressure gas, and the temperature increases at the same time; the high-temperature and high-pressure refrigerant enters the condenser, exchanges heat with the external environment, reduces the temperature of the refrigerant, and condenses into a high-pressure liquid; the high-pressure liquid refrigerant passes through the throttling element and the pressure is reduced; the low-pressure refrigerant flows into the evaporation pipeline, and exchanges heat with the internal environment of the refrigerator through the inner tank body 10 in the evaporation pipeline to achieve cooling of the items in the refrigerator, and the refrigerant absorbs heat and evaporates to become low-pressure steam; the low-pressure steam refrigerant flows out of the evaporation channel 30 and enters the compressor again, and the cycle is repeated.

[0052] In summary, the refrigerator liner and the overall structure of the refrigerator of the utility model are simple and easy to produce and process. The evaporator and the liner in the traditional refrigerator structure are cleverly combined into one. The heat exchange area between the refrigerant and the liner body 10 is large and the thermal resistance is small. The heat exchange effect between the refrigerant in the evaporation flow channel 30 and the storage space in the refrigerator can be effectively improved, the refrigeration efficiency of the refrigerator is improved, and the refrigeration energy consumption of the refrigerator is reduced.

[0053] The above implementation modes are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A refrigerator liner, characterized in that: It includes an inner tank main body and a flow channel plate, where: The flow channel plate is coated on the outside of the inner tank main body and fixed by welding; A serpentine groove is stamped on the flow channel plate, the notch of the groove faces the inner tank main body, and an evaporation flow channel for refrigerant to flow through is formed between the groove and the outer wall of the inner tank main body.

2. The refrigerator inner tank according to claim 1, wherein: The inner tank main body is square and is formed by bending and welding an aluminum plate; The flow channel plate is arranged on one or more sides of the inner tank main body, and the size of the flow channel plate is adapted to the size of the inner tank main body.

3. The refrigerator inner tank according to claim 2, wherein: The flow channel plate is bent and coated on the four outer sides of the inner tank main body in accordance with the shape of the inner tank main body.

4. The refrigerator inner tank according to claim 1, wherein: The raw material of the flow channel plate is an aluminum plate, and it is connected to the inner tank main body by brazing.

5. The refrigerator inner tank according to claim 4, wherein: The surface of the flow channel plate is cold-rolled with a composite layer of filler metal, and it is welded and fixed on the inner tank main body through a vacuum brazing furnace; Alternatively, a brazing flux is sprayed on the welding surface of the flow channel plate, and it is welded and fixed on the inner tank main body through a tunnel furnace.

6. The refrigerator inner tank according to claim 1, wherein: The cross-section of the groove on the flow channel plate is in a "ji" shape.

7. The refrigerator inner tank according to claim 1, wherein: The evaporation flow channel includes an inlet section, a main body section, and an outlet section. The cross-section of the groove at the inlet section and the outlet section is arc-shaped, and the diameter is adapted to the pipe diameter of the refrigerant pipeline in the refrigerator.

8. The refrigerator inner tank according to claim 7, wherein: The inlet and outlet of the evaporation flow channel are connected and sealed with the ports of the refrigerant pipeline by welding.

9. The refrigerator inner tank according to claim 7, wherein: In the main body section of the evaporation flow channel, the cross-section of the groove is in a flat trapezoid shape, and the width of the notch is greater than the width of the bottom of the groove; Both ends of the main body section are gradually transitioned with the inlet section and the outlet section.

10. A refrigerator, comprising a housing, a compressor, a condenser and a throttling element, characterized in that: It further includes: The refrigerator inner tank according to any one of claims 1 to 9, The compressor, the condenser, the throttling element, and the evaporation flow channel are sequentially connected through a refrigerant pipeline. The inlet of the evaporation flow channel is connected to the throttling element, and the outlet is connected to the compressor to form a refrigerant circulation loop.

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