Uniform defrosting structure of low-temperature cabinet and low-temperature cabinet

Abstract

The utility model provides a low-temperature cabinet uniform defrosting structure, which comprises a low-temperature cabinet body, the low-temperature cabinet body comprises a defrosting assembly, a refrigerator body and an outdoor unit, and the defrosting assembly comprises an evaporator, a connecting pipe, an expansion valve, a compressor, a condenser, an air return pipe, an electric ball valve and a heating pipe assembly. According to the utility model, the electric ball valve component cuts off the pipeline when defrosting is started, so that the refrigerant in the pipeline of the evaporator is retained in the pipeline, the retained refrigerant is heated to expand into gas under the heating condition of the heating pipe assembly, and the high-temperature gas can quickly achieve air pressure balance in the pipeline of the evaporator, so that the defrosting effect is improved. Ice on the surface of a pipeline of the evaporator is thoroughly melted through high-temperature gas, in this way, the problem of defrosting dead angles is avoided, defrosting is more uniform, meanwhile, the situation that when an existing refrigerator body moves on an uneven road, components in the refrigerator body are likely to be loosened due to shaking can be prevented through the buffer assembly, and the refrigerator body is more stable. The service life of the refrigerator body is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of low-temperature cabinets, in particular to a low-temperature cabinet uniform defrosting structure and a low-temperature cabinet. Background Art

[0002] The frozen and refrigerated food industry is developing rapidly, and the number of supermarkets and hypermarkets is increasing rapidly. It is imperative to establish a complete cold chain system including production, storage, transportation, and sales. Among them, low-temperature cabinets are an indispensable component. Low-temperature cabinets are widely used in kitchens, supermarkets, and large retail malls.

[0003] At present, the defrosting of low-temperature cabinets is performed by arranging heating tubes under the evaporator. After the defrosting is started, the heating tubes start to work and use heat radiation to melt the ice on the surface of the evaporator. However, there will still be residual ice in some blind areas of the evaporator after the defrosting cycle is over. In this way, the residual ice will accumulate more and more under the continuous circulation of the refrigeration cycle, thereby causing the evaporator to be blocked, the refrigeration performance to be reduced, and the food in the customer's cabinet to be damaged. In addition, when the existing low-temperature cabinet is moved on an uneven road, the internal components of the low-temperature cabinet may be loosened due to shaking, thereby affecting the service life of the low-temperature cabinet. Therefore, a uniform defrosting structure and a low-temperature cabinet are proposed. Utility Model Content

[0004] In view of this, the utility model provides a low-temperature cabinet uniform defrosting structure and a low-temperature cabinet to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the utility model embodiment is achieved as follows:

[0006] On the one hand: a low-temperature cabinet uniform defrosting structure, comprising a low-temperature cabinet body, the low-temperature cabinet body comprising a defrosting assembly, a refrigerator body and an outdoor unit, the defrosting assembly comprising an evaporator, a connecting pipe, an expansion valve, a compressor, a condenser, a return air pipe, an electric ball valve, and a heating pipe assembly;

[0007] An evaporator is fixedly connected to the inner wall of the refrigerator body, a heating tube assembly is provided at the bottom of the evaporator, a connecting pipe is connected and fixedly connected to the left side of the evaporator, an expansion valve is provided on the connecting pipe, a condenser and a compressor are fixedly connected to the inner wall of the bottom of the outdoor unit, the compressor and the condenser are connected by a round tube, an end of the connecting pipe is in active contact with the condenser, a return air pipe is connected and fixed to the right side of the evaporator, an end of the return air pipe extends to the outside of the refrigerator body and is in active contact with one side of the compressor, and an electric ball valve is provided on the return air pipe.

[0008] In a second aspect, a low-temperature cabinet, using a low-temperature cabinet uniform defrosting structure, includes a refrigerator body, a buffer assembly is provided on one side of the refrigerator body, and the buffer assembly includes a base, a damper, a U-shaped plate, and a positioning rod;

[0009] Two dampers are fixedly connected to the bottom inner wall of the base, the output end of the damper is fixedly connected to the bottom of the refrigerator body, a U-shaped plate is fixedly connected to the bottom inner wall of the base, and two positioning rods are fixedly connected between the inner walls on both sides of the U-shaped plate.

[0010] Further preferably, a connecting plate is slidably connected to the positioning rod, a first buffer spring is welded between one side of the connecting plate and an inner wall of one side of the U-shaped plate, and the first buffer spring is movably sleeved on the corresponding positioning rod.

[0011] Further preferably, an elastic sheet is rotatably connected between the two connecting plates at their respective sides close to each other, and the top of the elastic sheet is fixedly connected to the bottom of the refrigerator body.

[0012] Further preferably, two grooves are provided on both side inner walls of the base, and a guide rod is fixedly connected between the two side inner walls of the groove.

[0013] Further preferably, an L-shaped plate is slidably connected to the guide rod, a second buffer spring is welded between the top inner wall of the L-shaped plate and the top inner wall of the corresponding groove, and the second buffer spring is movably mounted on the corresponding guide rod.

[0014] Further preferably, four universal wheels are fixedly connected to the bottom of the base.

[0015] Further preferably, the connecting plate is provided with two positioning holes, and the connecting plate is slidably connected to the corresponding positioning rods through the positioning holes.

[0016] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0017] 1. The utility model cuts off the pipeline by the electric ball valve component when the defrost is turned on, so that the refrigerant in the pipeline of the evaporator is retained in the pipeline. When the heating tube assembly is heated, the retained refrigerant expands into gas due to the heat, and the high-temperature gas will quickly reach air pressure balance in the pipeline of the evaporator, and the ice on the surface of the pipeline of the evaporator will be completely melted by the high-temperature gas, so there is no problem of defrosting dead corners, and the defrosting is more uniform.

[0018] 2. According to the utility model, when the mobile refrigerator body moves, the downward pressure of the refrigerator body squeezes the elastic sheet, and the elastic sheet drives the connecting plate to slide on the positioning rod. The connecting plate compresses or stretches the corresponding first buffer spring during the movement. At the same time, the refrigerator body drives the L-shaped plate to slide on the corresponding guide rod. The L-shaped plate compresses or stretches the corresponding second buffer spring during the movement. The arrangement of the first buffer spring and the second buffer spring plays a buffering role. At the same time, the arrangement of the damper concentrates the anti-seismic buffering performance, which can reduce shaking and improve the stability performance, thereby preventing the loosening of the internal components of the refrigerator body due to shaking when the existing refrigerator body moves on an uneven road, thereby affecting the service life of the refrigerator body.

[0019] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0022] Figure 2 This is a cutaway three-dimensional structural diagram of the refrigerator body of the utility model;

[0023] Figure 3 This is a cutaway three-dimensional structural diagram of the outdoor unit of the utility model;

[0024] Figure 4 It is a partial three-dimensional structural diagram of the utility model;

[0025] Figure 5 For the utility model Figure 4 Enlarged structural diagram of area A in the middle.

[0026] Figure numerals: 1. defrost assembly; 2. refrigerator body; 3. evaporator; 4. connecting pipe; 5. expansion valve; 6. outdoor unit; 7. compressor; 8. condenser; 9. return air pipe; 10. electric ball valve; 11. buffer assembly; 12. base; 13. damper; 14. U-shaped plate; 15. positioning rod; 16. connecting plate; 17. first buffer spring; 18. elastic sheet; 19. groove; 20. guide rod; 21. L-shaped plate; 22. second buffer spring; 23. universal wheel; 24. heating tube assembly. DETAILED DESCRIPTION

[0027] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0028] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0029] Embodiment 1

[0030] like Figure 1-Figure 3 As shown, the embodiment of the utility model provides a low-temperature cabinet uniform defrosting structure, including a low-temperature cabinet body, the low-temperature cabinet body includes a defrosting component 1, a refrigerator body 2 and an outdoor unit 6, characterized in that the defrosting component 1 includes an evaporator 3, a connecting pipe 4, an expansion valve 5, a compressor 7, a condenser 8, a return air pipe 9, an electric ball valve 10, and a heating pipe assembly 24;

[0031] An evaporator 3 is fixedly connected to the inner wall of the refrigerator body 2, a heating tube assembly 24 is provided at the bottom of the evaporator 3, a connecting pipe 4 is connected and fixedly connected to the left side of the evaporator 3, an expansion valve 5 is provided on the connecting pipe 4, a condenser 8 and a compressor 7 are fixedly connected to the inner wall of the bottom of the outdoor unit 6, the compressor 7 and the condenser 8 are connected by a round tube, and the end of the connecting pipe 4 is in active contact with the condenser 8;

[0032] In Embodiment 1, a return air pipe 9 is connected to and fixed on the right side of the evaporator 3, an end of the return air pipe 9 extends to the outside of the refrigerator body 2 and is in active contact with one side of the compressor 7, and an electric ball valve 10 is provided on the return air pipe 9. The electric ball valve 10 cuts off the pipeline when defrosting is turned on, so that the refrigerant in the pipeline of the evaporator 3 is retained in the pipeline. When the heating tube assembly 24 is heated, the retained refrigerant expands into gas due to the heat, and the high-temperature gas quickly reaches air pressure balance in the pipeline of the evaporator 3, and the ice on the surface of the pipeline of the evaporator 3 is completely melted by the high-temperature gas, so that there is no problem of defrosting dead corners, and the defrosting is more uniform.

[0033] Embodiment 2

[0034] like Figure 4 and Figure 5 As shown, the embodiment of the utility model provides a low-temperature cabinet, which utilizes the low-temperature cabinet uniform defrosting structure, including a refrigerator body 2, a buffer assembly 11 is provided on one side of the refrigerator body 2, and the buffer assembly 11 includes a base 12, a damper 13, a U-shaped plate 14, and a positioning rod 15;

[0035] Two dampers 13 are fixedly connected to the bottom inner wall of the base 12, and the output end of the damper 13 is fixedly connected to the bottom of the refrigerator body 2. A U-shaped plate 14 is fixedly connected to the bottom inner wall of the base 12, and two positioning rods 15 are fixedly connected between the inner walls on both sides of the U-shaped plate 14.

[0036] In the second embodiment, a connecting plate 16 is slidably connected to the positioning rod 15, and a first buffer spring 17 is welded between one side of the connecting plate 16 and the inner wall of one side of the U-shaped plate 14. The first buffer spring 17 is movably mounted on the corresponding positioning rod 15, and the setting of the U-shaped plate 14 plays a supporting role.

[0037] In the second embodiment, an elastic sheet 18 is rotatably connected between the two connecting plates 16 on the sides close to each other, and the top of the elastic sheet 18 is fixedly connected to the bottom of the refrigerator body 2. The provision of the elastic sheet 18 plays a buffering role.

[0038] In the second embodiment, two grooves 19 are provided on the inner walls on both sides of the base 12, a guide rod 20 is fixedly connected between the inner walls on both sides of the groove 19, an L-shaped plate 21 is slidably connected to the guide rod 20, a second buffer spring 22 is welded between the top inner wall of the L-shaped plate 21 and the corresponding top inner wall of the groove 19, the second buffer spring 22 is movably mounted on the corresponding guide rod 20, and the setting of the guide rod 20 plays a positioning role.

[0039] In the second embodiment, four universal wheels 23 are fixedly connected to the bottom of the base 12, and the arrangement of the universal wheels 23 plays a role in movement.

[0040] In the second embodiment, two positioning holes are provided on the connecting plate 16, and the connecting plate 16 is slidably connected to the corresponding positioning rods 15 through the positioning holes. The setting of the connecting plate 16 plays a connecting role.

[0041] The utility model is in operation: when in use, when the mobile refrigerator body 2 moves, the downward pressure of the refrigerator body 2 squeezes the elastic sheet 18, and the elastic sheet 18 drives the connecting plate 16 to slide on the positioning rod 15. The connecting plate 16 compresses or stretches the corresponding first buffer spring 17 during the movement, and at the same time, the refrigerator body 2 drives the L-shaped plate 21 to slide on the corresponding guide rod 20. The L-shaped plate 21 compresses or stretches the corresponding second buffer spring 22 during the movement. The first buffer spring 17 and the second buffer spring 22 are provided to play a buffering role. At the same time, the damper 13 is provided to concentrate the anti-seismic buffering performance, which can reduce shaking and improve the stability performance, thereby preventing the refrigerator body 2 from shaking when moving on an uneven road.

[0042] The looseness of the components will affect the service life of the refrigerator body 2. After moving to a suitable position, the outdoor unit 6 is fixed and then installed and connected with the condenser 8 and the compressor 7 through the connecting pipe 4 and the return pipe 9. By adding an electric ball valve 10 between the return pipe 9 of the evaporator 3 and the compressor 7, when the defrost signal is received, the outdoor unit 6 is fixed and then installed and connected with the condenser 8 and the compressor 7 through the connecting pipe 4 and the return pipe 9.

[0043] At the time of the signal, the electric ball valve 10 will close the pipeline, and the heating tube assembly 24 arranged under the evaporator 3 will start to work 135, so that a part of the refrigerant will remain in the pipeline of the evaporator 3 due to the closing of the pipeline by the electric ball valve 10.

[0044] The heating of the heating tube assembly 24 arranged below the evaporator 3 heats a part of the refrigerant remaining in the pipeline of the evaporator 3 to become high-temperature gas, thereby completely defrosting the dead corner area of ​​the evaporator 3.

[0045] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited to

[0046] Without being limited thereto, any technician familiar with the technical field can easily think of various changes or replacements within the technical scope disclosed in the present utility model, which should all be included in the protection scope of the present utility model.

[0047] Therefore, the protection scope of the present utility model shall be based on the protection scope of the claims.

Claims

1. A low-temperature cabinet uniform defrosting structure, comprising a low-temperature cabinet body, wherein the low-temperature cabinet body comprises a defrosting component (1), a refrigerator body (2) and an outdoor unit (6), characterized in that: The defrosting assembly (1) comprises an evaporator (3), a connecting pipe (4), an expansion valve (5), a compressor (7), a condenser (8), an air return pipe (9), an electric ball valve (10), and a heating pipe assembly (24); An evaporator (3) is fixedly connected to the inner wall of the refrigerator body (2), a heating tube assembly (24) is provided at the bottom of the evaporator (3), a connecting pipe (4) is connected and fixedly connected to the left side of the evaporator (3), an expansion valve (5) is provided on the connecting pipe (4), a condenser (8) and a compressor (7) are fixedly connected to the inner wall of the bottom of the outdoor unit (6), the compressor (7) and the condenser (8) are connected by a round tube, the end of the connecting pipe (4) is in active contact with the condenser (8), the right side of the evaporator (3) is connected and fixed with a return air pipe (9), the end of the return air pipe (9) extends to the outside of the refrigerator body (2) and is in active contact with one side of the compressor (7), and an electric ball valve (10) is provided on the return air pipe (9).

2. A low temperature cabinet, using the low temperature cabinet uniform defrosting structure according to claim 1, characterized in that: It comprises a refrigerator body (2), one side of which is provided with a buffer assembly (11), and the buffer assembly (11) comprises a base (12), a damper (13), a U-shaped plate (14), and a positioning rod (15); Two dampers (13) are fixedly connected to the inner wall of the bottom of the base (12); the output end of the damper (13) is fixedly connected to the bottom of the refrigerator body (2); a U-shaped plate (14) is fixedly connected to the inner wall of the bottom of the base (12); and two positioning rods (15) are fixedly connected between the inner walls on both sides of the U-shaped plate (14).

3. The low temperature cabinet according to claim 2, characterized in that: A connecting plate (16) is slidably connected to the positioning rod (15), a first buffer spring (17) is welded between one side of the connecting plate (16) and an inner wall of one side of the U-shaped plate (14), and the first buffer spring (17) is movably sleeved on the corresponding positioning rod (15).

4. The low temperature cabinet according to claim 3, characterized in that: An elastic sheet (18) is rotatably connected between the two connecting plates (16) at the sides close to each other, and the top of the elastic sheet (18) is fixedly connected to the bottom of the refrigerator body (2).

5. The low temperature cabinet according to claim 2, characterized in that: Two grooves (19) are provided on both inner walls of the base (12), and a guide rod (20) is fixedly connected between the inner walls of the grooves (19).

6. The low temperature cabinet according to claim 5, characterized in that: An L-shaped plate (21) is slidably connected to the guide rod (20), a second buffer spring (22) is welded between the top inner wall of the L-shaped plate (21) and the top inner wall of the corresponding groove (19), and the second buffer spring (22) is movably sleeved on the corresponding guide rod (20).

7. The low temperature cabinet according to claim 2, characterized in that: Four universal wheels (23) are fixedly connected to the bottom of the base (12).

8. The low temperature cabinet according to claim 3, characterized in that: The connecting plate (16) is provided with two positioning holes, and the connecting plate (16) is slidably connected to the corresponding positioning rods (15) through the positioning holes.

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