Refrigerator refrigerating system capable of cooling variable-frequency driving plate

Abstract

The utility model relates to a refrigerator refrigerating system capable of cooling a variable-frequency driving plate, which comprises a compressor, a condenser pipe, a capillary pipe and an evaporator which are sequentially connected to form a refrigerating loop, and the evaporator is connected with the compressor through an air return pipe; an outer shell is arranged outside a variable frequency driving plate of the compressor, a plurality of strip-shaped grooves with semicircular sections are formed in the outer wall of the outer shell, and air return pipes are sequentially laid in the strip-shaped grooves in a circuitous mode. According to the utility model, the refrigeration effect of the refrigerator can be ensured, the operation stability of the variable-frequency driving plate and the compressor is improved, and the service life of electronic components on the variable-frequency driving plate is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of refrigerator, concretely relates to a refrigerator refrigerating system capable of cooling variable frequency drive board. BACKGROUND

[0002] With the in-depth of environmental protection concept and energy saving concept, the energy consumption requirement of the refrigerator is higher and higher for the state and consumer, and the variable frequency compressor has been very popular in the refrigerator, wherein the variable frequency drive board of the variable frequency compressor basically adopts the natural cooling mode. However, the electronic components in the variable frequency drive board will generate a lot of heat when working normally, and the surface temperature will be very high, and when the variable frequency drive board is assembled beside the variable frequency compressor, the high temperature of the compressor will also affect the temperature of the variable frequency drive board. When the variable frequency drive board is in a high temperature state, its stability and functionality will be affected, not only the driving stability will be poor due to high temperature, affecting the operation of the compressor, but also the high temperature will trigger the stop protection or actively reduce the frequency, directly affecting the refrigeration effect. SUMMARY

[0003] The utility model aims at providing a refrigerator refrigerating system capable of cooling variable frequency drive board to solve the problem of poor heat dissipation effect of the variable frequency drive board of the compressor.

[0004] The refrigerator refrigerating system capable of cooling variable frequency drive board of the utility model is realized as follows:

[0005] A refrigerator refrigerating system capable of cooling variable frequency drive board, comprising a compressor, a condenser pipe, a capillary tube and an evaporator connected in sequence to form a refrigeration circuit, wherein the evaporator and the compressor are connected through a return air pipe;

[0006] The variable frequency drive board of the compressor is externally provided with an outer shell, a plurality of strip-shaped grooves with semicircular cross sections are arranged on the outer wall of the outer shell, and the return air pipe is laid in each strip-shaped groove in a circuitous manner.

[0007] Further, the outer shell comprises a first shell and a second shell, the strip-shaped grooves are arranged on the outer wall of the first shell, and the variable frequency drive board is installed at the inner wall of the first shell.

[0008] Further, the electronic components to be cooled on the variable frequency drive board are located on the side of the variable frequency drive board facing the first shell.

[0009] Further, the first shell is located on the side of the outer shell away from the compressor.

[0010] Further, the first shell is made of aluminum die casting.

[0011] Further, the second shell is made of flame-retardant plastic material.

[0012] Further, each of the strip-shaped grooves is arranged transversely, and each is arranged vertically.

[0013] Further, the outer diameter of the return air pipe matches the inner diameter of the strip-shaped groove.

[0014] After the above technical scheme is adopted, the refrigerator refrigeration system capable of cooling the variable frequency drive board has the following beneficial effects:

[0015] (1) The refrigerator refrigeration system directly utilizes the refrigerator refrigeration system to cool the variable frequency drive board, ensures the refrigeration effect of the refrigerator, improves the stability of the variable frequency drive board and the compressor, and increases the service life of the electronic components on the variable frequency drive board.

[0016] (2) The return air pipe is arranged on the outer shell of the variable frequency drive board in a circuitous manner, which can increase the contact area between the return air pipe and the outer shell and improve the heat dissipation effect of the variable frequency drive board. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described below in combination with the drawings and embodiments.

[0018] Figure 1 is the structure schematic view of the refrigerator refrigeration system capable of cooling the variable frequency drive board of the preferred embodiment of the utility model;

[0019] Figure 2 is the enlarged view of part A in Figure 1 ; is the sectional view of the variable frequency drive board part of the refrigerator refrigeration system capable of cooling the variable frequency drive board of the preferred embodiment of the utility model;

[0020] Figure 3 is the arrangement schematic view of the return air pipe on the outer shell of the refrigerator refrigeration system capable of cooling the variable frequency drive board of the preferred embodiment of the utility model;

[0021] Figure 4 is the arrangement schematic view of the return air pipe on the outer shell of the refrigerator refrigeration system capable of cooling the variable frequency drive board of the preferred embodiment of the utility model;

[0022] In the drawing: compressor 1, condenser pipe 2, capillary tube 3, evaporator 4, return air pipe 5, variable frequency drive board 6, outer shell 7, first shell 7-1, second shell 7-2, strip-shaped groove 8, electronic component 9. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] As shown in the drawings, Figures 1-4 A refrigerator refrigeration system capable of cooling a variable frequency drive board, comprising a compressor 1, a condenser pipe 2, a capillary tube 3 and an evaporator 4 connected in sequence to form a refrigeration circuit, the evaporator 4 and the compressor 1 are connected through a return air pipe 5; the variable frequency drive board 6 of the compressor 1 is externally provided with an outer shell 7, a plurality of semicircular strip-shaped grooves 8 are arranged on the outer wall of the outer shell 7, and the return air pipe 5 is laid in each strip-shaped groove 8 in a circuitous manner.

[0026] The refrigeration circuit is mainly used for the refrigeration demand of the refrigerator, that is, the compressor 1 operates to form a normal refrigeration cycle to complete the refrigeration demand of the refrigerator. In this process, the compressor 1 and the variable frequency drive board 6 work and generate heat, and the return air pipe 5 can cool the variable frequency drive board 6.

[0027] Among them, the entire return air pipe 5 is relatively long, and a section of the return air pipe 5 is laid in the strip-shaped groove 8 on the outer wall of the outer shell 7 to cool the variable frequency drive board 6.

[0028] The electronic components 9 on the variable frequency drive board 6 generate heat when working, in order to improve the heat dissipation effect of the electronic components 9, the outer shell includes a first shell 7-1 and a second shell 7-2, the strip-shaped groove 8 is arranged on the outer wall of the first shell 7-1, and the variable frequency drive board 6 is installed at the inner wall of the first shell 7-1.

[0029] Among them, the first shell 7-1 and the second shell 7-2 can be fixed by screw connection.

[0030] The electronic components 9 and the return air pipe 5 that need to be cooled are arranged on both sides of the first shell 7-1 respectively, and the distance between them is shortened, which can effectively improve the cooling effect of the electronic components 9.

[0031] The electronic components 9 to be cooled on the variable frequency drive board 6 are located on the side of the variable frequency drive board 6 facing the first shell 7-1, so that the heat generated by the electronic components 9 can be directly conducted away through the first shell 7-1, improving the cooling effect of the variable frequency drive board 6 and the electronic components 9.

[0032] Preferably, the electronic components 9 and the inner wall of the first shell 7-1 are coated with heat-conducting silica gel to further improve the cooling effect.

[0033] Since the compressor 1 generates a large amount of heat during operation, in order to reduce the influence of the heat generated by the compressor 1 on the variable frequency drive board 6, the first shell 7-1 is located on the side of the outer shell 7 away from the compressor 1.

[0034] Since the variable frequency drive board 6 on which the electronic components 9 are installed is located on the inner side of the first shell 7-1, the first shell 7-1 is arranged on the side away from the compressor 1, which can correspondingly reduce the influence of the compressor 1 on the electronic components 9.

[0035] In order to improve the cooling effect of the variable frequency drive board 6, the first shell 7-1 is made of aluminum by pressure casting.

[0036] Aluminum has good thermal conductivity and can efficiently transfer cold, thereby improving the cooling effect of the electronic components 9 on the variable frequency drive board 6.

[0037] The compressor 1 generates heat during operation, in order to avoid the risk of high-temperature combustion, the second shell 7-2 is made of flame-retardant plastic material.

[0038] The second shell 7-2 can be made of PVC material, but is not limited to this.

[0039] In order to be able to lay the return air pipe 5 in a circuitous manner in the strip-shaped grooves 8 on the outer side of the first shell 7-1 to increase the contact area between the return air pipe 5 and the first shell 7-1, each strip-shaped groove 8 is arranged horizontally and each is arranged vertically.

[0040] The return air pipe 5 is arranged in the strip-shaped grooves 8 on the outer wall of the first shell 7-1, which can realize the surface-to-surface contact between the return air pipe 5 and the first shell 7-1, thereby increasing the contact area and improving the heat conduction efficiency, i.e. the heat dissipation effect of the variable frequency drive board 6.

[0041] In order to facilitate the cooperation of the return air pipe 5 and the strip-shaped grooves 8, the outer diameter of the return air pipe 5 matches the inner diameter of the strip-shaped grooves 8.

[0042] The outer diameter of the return air pipe 5 is set to match the inner diameter, i.e. the internal diameter, of the strip-shaped grooves 8, so that the return air pipe 5 can be directly clamped into the strip-shaped grooves 8, which not only facilitates disassembly and assembly, but also realizes the maximum contact area between the outer wall of the return air pipe 5 and the inner wall of the strip-shaped grooves 8.

[0043] The system is when the refrigerator is normal refrigeration, the high temperature refrigerant discharged by the compressor 1, through the condenser heat dissipation, capillary 3 pressure reduction throttle, evaporates into low temperature refrigerant in the evaporator 4, the low temperature refrigerant flows back to the compressor 1 through the return air pipe 5, the low temperature return air pipe 5 is laid in the outer shell 7 of the frequency conversion drive board 6 in a roundabout way, and the frequency conversion drive board 6 is cooled through heat conduction, the electronic components 9 on the frequency conversion drive board 6 work at a lower temperature, improve the stability and service life, and the high temperature does not appear shutdown protection and the compressor 1 frequency reduction operation, ensure the stable refrigeration effect.

[0044] The utility model discloses the low temperature of evaporator 4 export side return air pipe 5 gives frequency conversion drive board 6 cooling, is the electronic components 9 at lower temperature work when frequency conversion drive board 6 operation, greatly improve the service life of electronic components 9, solved the stability problem of traditional frequency conversion drive board 6 in high temperature environment, high load operation, ensure the refrigeration effect of refrigerator, the efficiency of frequency conversion drive board 6 and compressor 1 is maximized.

[0045] The above ideal embodiment according to the utility model discloses the inspiration, through the above-mentioned description, relevant staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A refrigerator refrigeration system that can cool a variable frequency drive board, characterized by, It comprises a compressor (1), a condenser pipe (2), a capillary pipe (3) and an evaporator (4) connected in sequence to form a refrigeration circuit, and the evaporator (4) and the compressor (1) are connected through a return pipe (5); An outer shell (7) is arranged outside a variable frequency drive board (6) of the compressor (1), a plurality of semicircular strip grooves (8) are arranged on an outer wall of the outer shell (7), and the return pipe (5) is arranged in the strip grooves (8) in a meandering manner.

2. The refrigerator refrigeration system coolable against a variable frequency drive board according to claim 1, characterized in that, The outer shell comprises a first shell (7-1) and a second shell (7-2), the strip grooves (8) are arranged on an outer wall of the first shell (7-1), and the variable frequency drive board (6) is arranged at an inner wall of the first shell (7-1).

3. The refrigerator refrigerant system coolable variable frequency drive board of claim 2, wherein, Electronic components (9) to be cooled on the variable frequency drive board (6) are arranged on a side of the variable frequency drive board (6) facing the first shell (7-1).

4. The refrigerator refrigerant system coolable variable frequency drive board of claim 2, wherein, The first shell (7-1) is arranged on a side of the outer shell (7) away from the compressor (1).

5. The refrigerator refrigerant system coolable variable frequency drive board of claim 2, wherein, The first shell (7-1) is made of aluminum die casting.

6. The refrigerator refrigerant system coolable variable frequency drive board of claim 2, wherein, The second shell (7-2) is made of flame-retardant plastic.

7. The refrigerator refrigerant system coolable variable frequency drive board of claim 1, wherein, Each strip groove (8) is arranged horizontally, and each strip groove (8) is arranged vertically.

8. The refrigerator refrigerant system coolable variable frequency drive board of claim 1, wherein, An outer diameter of the return pipe (5) matches an inner diameter of the strip grooves (8).

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