Frostless air cooling system and refrigeration cabinet

Abstract

The utility model provides a frostless air cooling system and refrigeration cabinet, frostless air cooling system includes main circulation line, main circulation line includes compressor, evaporator module and condenser, the evaporator module includes evaporator and evaporation fan, the outlet of compressor is connected with the inlet of condenser, and the condenser is connected with the evaporator. An outlet of the condenser is connected with an inlet of the evaporator, an outlet of the evaporator is connected with an inlet of the compressor, an evaporation water disc is arranged below the evaporator, the inlet of the evaporator is further connected with the outlet of the compressor through a defrosting pipeline, and an electromagnetic valve and a water disc defrosting pipe are arranged in the defrosting pipeline. The water disc defrosting pipe is arranged above the evaporation water disc. The refrigerating system is of an air cooling structure, and the use amount of copper materials is reduced by about 70%; refrigerant hot air is adopted for defrosting, extra electric heating is not needed, energy is saved, and the structure is simplified; water generated during defrosting is directly discharged out of the cabinet, wet air in the cabinet is discharged, and a dry and frostless state in the cabinet is achieved; according to the evaporator module, the evaporator, the fan and the CDU are integrated, the whole evaporator module can be replaced, the maintenance efficiency is greatly improved, the maintenance cost is reduced, the production process is simple, installation is convenient, and the maintenance difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to refrigeration technical field, concretely relates to a kind of frost-free air cooling system and refrigeration cabinet. BACKGROUND

[0002] Refrigeration cabinet is the electric appliance equipment commonly used in people's life now, and the traditional horizontal refrigerator usually adopts the way of direct cooling to refrigerate, but in the use process, the frost of direct cooling structure is much, and it needs user to defrost manually regularly, increases the work burden of personnel, and more energy is consumed for electric heating defrosting, and electric heating is prone to aging fracture for long time use, uses a large amount of copper pipe, raw material is expensive and cost is high, production process is complex, integrated design increases the difficulty of assembly and maintenance, in order to reduce the frost inside the box, adopt the refrigerator of air cooling type to reduce the frost in cabinet. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and provide a frost-free air cooling system and refrigeration cabinet.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] In the first aspect, the utility model provides a kind of frost-free air cooling system, including main circulation pipeline, the main circulation pipeline includes compressor, evaporator module and condenser, the evaporator module includes evaporator and evaporative fan, the outlet of the compressor is connected with the inlet of condenser, the outlet of the condenser is connected with the inlet of evaporator, the outlet of the evaporator is connected with the inlet of compressor, the evaporator is provided with evaporative water tray below, the inlet of the evaporator and the outlet of compressor are also connected by defrosting pipeline, electromagnetic valve and water tray defrosting pipe are arranged in the defrosting pipeline, and the water tray defrosting pipe is arranged above the evaporative water tray.

[0006] Further, a filter and a throttling capillary tube are sequentially arranged between the outlet of the condenser and the inlet of the evaporator.

[0007] Further, the evaporator module further includes a cold distribution unit CDU arranged before the inlet of the evaporator.

[0008] Further, a water collecting tray is arranged below the cold distribution unit CDU.

[0009] Further, the water collecting tray is communicated with the evaporative water tray through a conduit.

[0010] In the second aspect, the utility model provides a refrigeration cabinet, which comprises a cabinet body and an inner container arranged in the cabinet body, a circulating air duct is enclosed between the inner container and the cabinet body, a partition plate is arranged inside the inner container to divide the circulating air duct into an air inlet channel and an air return channel, and the refrigeration cabinet further comprises the frost-free air cooling system as described above.

[0011] Further, the cabinet body is provided with a mounting slot, and the frost-free air cooling system is arranged in the mounting slot in a pullable manner.

[0012] Further, an evaporation cavity is arranged in the mounting slot, the air inlet and the air outlet of the evaporation cavity are connected with the air outlet of the return air channel and the air inlet of the air inlet channel respectively, the side wall of the evaporation cavity is provided with a mounting hole, and the evaporator module is arranged in the evaporation cavity through the mounting hole.

[0013] Further, the evaporative fan is arranged near the air outlet of the evaporation cavity.

[0014] Further, the inner wall of the inner container is provided with the air outlet of the air inlet channel and the air inlet of the return air channel at positions corresponding to the air inlet channel and the return air channel.

[0015] After the above technical scheme is adopted, the modular air cooling cabinet has the following beneficial effects compared with the prior art:

[0016] 1. The refrigeration system of the present application is of air cooling structure, and the use amount of copper material is reduced by about 70%; the frost is thawed by using refrigerant hot gas, and no additional electric heating is needed, so that energy is saved and the structure is simplified; the water generated during the thawing is directly discharged outside the cabinet, and the humid air in the cabinet is discharged, so that the dry and frost-free state in the cabinet is achieved.

[0017] 2. The evaporator module of the present application integrates the evaporator, the fan and the CDU into one body, and the whole body is replaceable, so that the maintenance efficiency is greatly improved and the maintenance cost is reduced, the production process is simple, the installation is convenient, and the difficulty of maintenance is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are part of the present application and serve to provide a further understanding of the present application, and the schematic embodiments of the present application and the description thereof serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0019] Figure 1 is a structure schematic view of the frost-free air cooling system of the present application;

[0020] Figure 2 is a structure schematic view of the refrigeration cabinet of the present application;

[0021] Figure 3 is a structure schematic view of the frost-free air cooling system of the refrigeration cabinet of the present application;

[0022] Figure 4 is a forward schematic view of the inner container of the refrigeration cabinet of the present application;

[0023] Figure 5 This is a side view of the inner tank of the refrigeration cabinet of the utility model;

[0024] Figure 6 This is a schematic diagram of the air flow direction of the air duct of the refrigeration cabinet of the utility model;

[0025] Figure 7 It is a schematic diagram of the overall appearance of the refrigeration cabinet of the present invention.

[0026] In the figure: 1. Compressor; 2. Condenser; 3. Condensing fan; 4. Evaporator; 5. Evaporating fan; 6. Filter; 7. Throttling capillary; 8. Solenoid valve; 9. Water pan defrost pipe; 10. Evaporating water pan; 11. Cabinet; 12. Inner tank; 13. Mounting slot; 14. Evaporating chamber; 15. Sealing plate; 16. Partition; 17. Mounting hole.

[0027] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0030] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0032] [Example 1]

[0033] like Figure 1 As shown, this embodiment provides a frost-free air cooling system, including a main circulation pipeline, which includes a compressor 1, an evaporator 4 module, and a condenser 2. The evaporator 4 module includes an evaporator 4 and an evaporating fan 5. The outlet of the compressor 1 is connected to the inlet of the condenser 2, the outlet of the condenser 2 is connected to the inlet of the evaporator 4, and the outlet of the evaporator 4 is connected to the inlet of the compressor 1. A filter 6 and a throttling capillary tube 7 are sequentially provided between the outlet of the condenser 2 and the inlet of the evaporator 4. An evaporation water pan 10 is provided below the evaporator 4. The inlet of the evaporator 4 and the outlet of the compressor 1 are also connected via a defrost pipeline. A solenoid valve 8 and a water pan defrost pipe 9 are provided in the defrost pipeline. The water pan defrost pipe 9 is provided above the evaporation water pan 10.

[0034] In a preferred embodiment, the evaporator module 4 further includes a cooling distribution unit (CDU) located before the inlet of the evaporator 4, which is used to intelligently distribute the refrigerant in the pipeline. A water collection tray is provided below the cooling distribution unit (CDU), which is connected to the evaporation water tray 10 via a conduit.

[0035] In this embodiment, the evaporator 4 module is arranged so that the evaporator 4, the evaporating fan 5 and the CDU are replaceable as a whole, which greatly improves maintenance efficiency and reduces maintenance costs.

[0036] In a preferred embodiment, the frost-free air cooling system further includes a condensing fan 3 , which is arranged near the condenser 2 and is used to dissipate heat from the condenser 2 .

[0037] In cooling mode, the main circulation pipeline is open and the solenoid valve 8 of the defrost pipeline is closed. The compressor 1 inlet inhales low-temperature, low-pressure refrigerant gas from the evaporator 4 and the outlet discharges high-temperature, high-pressure gas. After the refrigerant enters the condenser 2, it is cooled and condensed into a high-pressure, room-temperature refrigerant liquid. After passing through the filter 6 and the throttling capillary 7, it is converted into a low-pressure, room-temperature liquid. The refrigerant is then distributed through the CDU and enters the evaporator 4 to absorb heat and evaporate, becoming a low-temperature, low-pressure gas. After entering the compressor 1, a cycle is completed. The evaporating fan 5 drives the air to flow through the evaporator 4 to form low-temperature air, which is then cooled by the low-temperature air. During the air circulation process, the water vapor it carries gradually condenses near the evaporator 4 and the CDU, which has a lower temperature, forming frost, affecting the operation of the entire system and increasing energy consumption. Therefore, the system must be defrosted regularly.

[0038] In the defrost mode, the evaporating fan 5 is turned off, the inlet of the condenser 2 is closed, and the solenoid valve 8 of the defrost pipeline is opened to form a passage for the defrost pipeline. The compressor 1 inlet inhales the low-temperature and low-pressure refrigerant gas from the evaporator 4, and the outlet discharges the high-temperature and high-pressure gas. The high-temperature gas flows through the water pan defrost pipe 9 and the evaporator 4 module in turn, gradually melting the frost on the surface of the evaporator 4 and the CDU and dripping it into the evaporative water pan 10 and the water collection pan below.

[0039] It should be noted that in the cooling mode, the surface temperature of the evaporating water tray 10 is also very low, and its surface is also prone to frost. The setting of the water tray defrost pipe 9 can allow high-temperature gas to flow through the water tray defrost pipe 9 and the evaporator 4 module in sequence, so that the frost on the surface of the evaporating water tray 10 is quickly melted. The water collection tray and the evaporating water tray 10 are connected by a conduit, so that the water in the water collection tray can flow into the evaporating water tray 10. The condensed water in the evaporating water tray 10 can completely evaporate during the two defrosting periods without the need for manual dumping by personnel.

[0040] With the above solution, the refrigeration system adopts an air-cooled structure, reducing the use of copper materials by about 70%; the defrosting process uses refrigerant hot gas, eliminating the need for additional electric heating, saving energy and streamlining the structure; the water generated during defrosting is directly discharged outside the cabinet, and the humid air inside the cabinet is exhausted, achieving a dry and frost-free state inside the cabinet.

[0041] [Example 2]

[0042] like Figures 2-7 As shown, this embodiment provides a refrigeration cabinet, including a cabinet body 11 and an inner tank 12 arranged in the cabinet body 11, a circulating air duct is enclosed between the inner tank 12 and the cabinet body 11, and a partition 16 is provided inside the inner tank 12 to separate the circulating air duct into an air inlet channel and a return air channel. The refrigeration cabinet also includes the frost-free air cooling system provided in the aforementioned embodiment, and the cabinet body 11 is provided with an installation groove 13, and the frost-free air cooling system can be pulled out and arranged in the installation groove 13.

[0043] The mounting slot 13 can be provided on one side of the bottom of the cabinet 11 for easy installation and removal. Specifically, the partition 16 is provided horizontally, dividing the circulating air duct into upper and lower parts, with the return air duct at the top and the inlet air duct at the bottom. The air outlet of the inlet air duct and the air inlet of the return air duct are provided on the inner wall of the liner 12 at positions corresponding to the inlet air duct and the return air duct, respectively. The air outlet of the inlet air duct and the air inlet of the return air duct are provided on the side walls and top wall of the mounting slot 13, respectively.

[0044] An evaporation chamber 14 is located within the mounting slot 13. The air inlet and outlet of the evaporation chamber 14 are located on its top wall and front side wall, respectively, connecting to the outlet of the return air duct and the inlet of the air inlet duct. The side wall of the evaporation chamber 14 is provided with a mounting hole 17, through which the evaporator 4 module is inserted into the evaporation chamber 14. Furthermore, an evaporation fan 5 is located near the outlet of the evaporation chamber 14 to facilitate air flow.

[0045] In a preferred embodiment, a sealing plate 15 is provided on the rear side of the evaporator 4. When the frost-free air cooling system is installed in the mounting slot 13, the evaporator 4 module is inserted into the evaporation chamber 14 along the mounting hole 17. The sealing plate 15 then tightly engages the side wall of the evaporation chamber 14, sealing the mounting hole 17 to prevent the escape of circulating cold air. When the frost-free air cooling system needs to be inspected and maintained, it can be removed from the mounting slot 13 for easy and convenient maintenance.

[0046] When the refrigeration cabinet is running, driven by the evaporating fan 5, the low-temperature air enters the air inlet channel at the bottom of the inner tank 12 along the air outlet of the evaporating chamber 14, and enters the storage cavity in the cabinet body 11 through the air outlet of the air inlet channel, cooling the interior of the cabinet body 11 and forming a positive pressure in the cabinet body 11. The air with higher temperature above enters the return air channel along the air inlet of the return air channel at the upper part of the inner tank 12 under the action of pressure, and then enters the evaporating chamber 14 from the air inlet of the evaporating chamber 14 along the air outlet of the return air channel, and is cooled by the evaporator 4 to complete the circulation of the cold air.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0048] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments with equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A frost-free air cooling system, comprising a main circulation pipeline, the main circulation pipeline including a compressor, an evaporator module and a condenser, the evaporator module including an evaporator and an evaporation fan, the compressor outlet connected to the condenser inlet, the condenser outlet connected to the evaporator inlet, the evaporator outlet connected to the compressor inlet, and an evaporation water pan provided below the evaporator, characterized in that: The inlet of the evaporator and the outlet of the compressor are also connected through a defrost pipeline. The defrost pipeline is provided with a solenoid valve and a water pan defrost pipe. The water pan defrost pipe is arranged above the evaporating water pan.

2. The frost-free air cooling system according to claim 1, characterized in that: A filter and a throttling capillary are sequentially arranged between the outlet of the condenser and the inlet of the evaporator.

3. The frost-free air cooling system according to claim 1, characterized in that: The evaporator module further includes a cooling distribution unit (CDU) arranged before the evaporator inlet.

4. The frost-free air cooling system according to claim 3, characterized in that: A water collecting pan is provided below the cooling distribution unit CDU.

5. The frost-free air cooling system according to claim 4, characterized in that: The water collecting tray is communicated with the evaporation water tray through a conduit.

6. A refrigeration cabinet comprising a cabinet body and an inner container disposed in the cabinet body, wherein a circulating air duct is enclosed between the inner container and the cabinet body, and a partition is provided inside the inner container to separate the circulating air duct into an air inlet channel and a return air channel, characterized in that: The refrigeration cabinet further comprises a frost-free air cooling system as described in any one of claims 1-5.

7. The refrigeration cabinet according to claim 6, characterized in that: The cabinet is provided with an installation slot, and the frost-free air cooling system is drawable and arranged in the installation slot.

8. The refrigeration cabinet according to claim 7, characterized in that: An evaporation chamber is provided in the mounting groove, the air inlet and air outlet of the evaporation chamber are respectively connected to the air outlet of the return air channel and the air inlet of the air inlet channel, a mounting hole is provided on the side wall of the evaporation chamber, and the evaporator module is embedded in the evaporation chamber through the mounting hole.

9. The refrigeration cabinet according to claim 8, characterized in that: The evaporation fan is arranged near the air outlet of the evaporation chamber.

10. The refrigeration cabinet according to claim 6, characterized in that: An air outlet of the air inlet channel and an air inlet of the return air channel are respectively provided on the inner wall of the inner container at positions corresponding to the air inlet channel and the return air channel.

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