Electric appliance box and air conditioner outdoor unit

Abstract

The utility model provides an electric appliance box and an air conditioner outdoor unit, the electric appliance box comprises a shell, a heat exchange part and an electronic component, the heat exchange part and the electronic component are both arranged in the shell, the heat exchange part comprises a fan and a heat exchanger, the heat exchanger is provided with heat exchange pieces, and the heat exchange pieces are located on the air outlet side of the fan; the draught fan is used for blowing air around the heat exchange pieces to the electronic components so as to conduct heat exchange on the electronic components. On one hand, the heat exchange area of the heat exchange piece is increased by arranging the heat exchange pieces on the heat exchanger, on the other hand, air flow in the shell is accelerated through the draught fan, air in the shell can make full contact with the heat exchange piece for heat exchange, the temperature in the shell is more uniform, the heat exchange efficiency is improved, high-temperature accumulation in the shell is avoided, and the good heat dissipation effect is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an electrical box and an air conditioning outdoor unit. Background Art

[0002] The electrical box is a core component of the air conditioning system, responsible for controlling the air conditioner's operation, receiving and processing operating signals, and regulating and controlling the air conditioner's operating status. During operation, the electrical box is inevitably exposed to high temperatures. Prolonged accumulation of high temperatures can damage electronic components and affect air conditioning operation, requiring improvement. Utility Model Content

[0003] The utility model provides an electrical appliance box and an air-conditioner outdoor unit, so as to solve the technical problem of high-temperature accumulation in the electrical appliance box.

[0004] To achieve the above-mentioned purpose, the present application proposes an electrical box, including a shell, a heat exchanger and electronic components, the heat exchanger and the electronic components are both arranged in the shell, the heat exchanger includes a fan and a heat exchanger, the heat exchanger is provided with a heat exchange plate, the heat exchange plate is located on the air outlet side of the fan, and the fan is used to blow the air around the heat exchange plate toward the electronic components to exchange heat for the electronic components.

[0005] Optionally, in one embodiment, it further includes an air guide tube, which is sleeved on the heat exchange plate, the fan is located at the air inlet end of the air guide tube, and the air guide tube is provided with an air outlet away from the heat exchange plate, and the air outlet is arranged toward the electronic components.

[0006] Optionally, in one embodiment, the air guide tube includes a first cylinder and a second cylinder, the first cylinder is sleeved on the heat exchange plate, the second cylinder is connected to the end of the first cylinder away from the fan, and a plurality of air outlet holes are arranged side by side on the second cylinder, and the inner diameter of the first cylinder is larger than the inner diameter of the second cylinder.

[0007] Optionally, in one embodiment, the air guide tube includes a first cylinder and a second cylinder, the first cylinder is mounted on the heat exchange plate, the second cylinder is connected to an end of the first cylinder away from the fan, the first cylinder extends along a first direction, the second cylinder extends along a second direction, and the first direction and the second direction are perpendicular or inclined.

[0008] Optionally, in one embodiment, the electronic components include a driving board, a main control board and an inductor, the driving board is arranged toward the air outlet, the main control board is located on the side of the driving board away from the air outlet, and the inductor is arranged on the driving board and toward the air outlet.

[0009] Optionally, in one embodiment, the second cylinder is disposed near one end of the housing, the air outlet is toward the other end of the housing, and the air inlet direction of the first cylinder is opposite to the air outlet direction of the air outlet.

[0010] Optionally, in one embodiment, the heat exchanger is disposed on the surface of the driving plate.

[0011] Optionally, in one embodiment, the heat exchange component also includes a first refrigerant pipe and a second refrigerant pipe connected to the heat exchanger; the first refrigerant pipe and the second refrigerant pipe are respectively used to connect to the refrigerant circulation circuit to use the refrigerant in the refrigerant circulation circuit to cool the heat exchange plates on the heat exchanger.

[0012] Optionally, in one embodiment, a plurality of heat exchange fins are arranged side by side at intervals, and an angle is formed between the rotating shaft of the fan and the plurality of heat exchange fins so that the airflow flows out through the gaps between the plurality of heat exchange fins.

[0013] The present application also proposes an air-conditioning outdoor unit, comprising the electrical box as described above.

[0014] The electrical box provided in the present application, on the one hand, increases the heat exchange area of the heat exchange element by arranging heat exchange plates on the heat exchanger, and on the other hand, accelerates the air flow in the shell through the fan, so that the air inside the shell can fully contact the heat exchange element for heat exchange, making the temperature inside the shell more uniform, improving the heat exchange efficiency, avoiding high temperature accumulation in the shell, and having a better heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of the electrical box of this application;

[0017] Figure 2 This is a schematic diagram of the structure of the heat exchange component in the electrical box of this application;

[0018] Figure 3 This is a schematic diagram of the structure of the air duct in the electrical box of this application;

[0019] Figure 4 This is a schematic diagram of the structure of the fan, heat exchange plate and heat exchanger in the electrical box of this application.

[0020] Description of Figure Numbers:

[0021] 1. Shell; 2. Heat exchange element; 21. Heat exchanger; 22. Heat exchange fin; 23. Fan; 24. First refrigerant pipe; 25. Second refrigerant pipe; 3. Drive board; 4. Main control board; 5. Reactor; 6. Air guide tube; 61. First cylinder; 62. Second cylinder; 621. Air outlet.

[0022] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In the present utility model, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0024] The present invention provides an electrical appliance box to solve the problem of high temperature accumulation inside the electrical appliance box.

[0025] In the embodiments of this application, Figure 1 As shown, the electrical box includes a shell 1, a heat exchanger 2 and electronic components. The heat exchanger 2 and the electronic components are both arranged in the shell 1. The heat exchanger 2 includes a fan 23 and a heat exchanger 21. The heat exchanger 21 is provided with a heat exchange plate 22. The heat exchange plate 22 is located on the air outlet side of the fan 23. The fan 23 is used to blow the air around the heat exchange plate 22 to the electronic components to exchange heat for the electronic components.

[0026] It should be noted that the heat exchanger 2 refers to a component that can exchange heat or cold with the air and structure inside the shell 1. In this embodiment, the heat exchanger 2 is used to provide cold air to the shell 1; electronic components refer to components of electronic components and small machines and instruments, which are often composed of several parts, such as resistors, capacitors, printed circuit boards, integrated circuits, etc., which will not be described in detail here. It can be understood that by providing a heat exchange plate 22 on the heat exchanger 21, the heat exchange area of the heat exchanger 2 can be increased. At the same time, a fan 23 is also provided to align with the heat exchange plate 22, so that the air inside the shell 1 can fully contact the heat exchange plate 22 under the drive of the fan 23 to exchange heat with it, thereby accelerating the air flow in the shell 1, thereby quickly taking away the heat accumulated by the electronic components, making the temperature inside the shell 1 more uniform, and preventing high temperature accumulation, thereby protecting the electronic components.

[0027] In some embodiments, the housing 1 has a sealed structure. It should be understood that a sealed structure of the housing 1 means that the structure of the electrical box that passes through the side walls of the housing 1 is sealed to the housing 1, and the side walls of the housing 1 are sealed or integrally formed. For example, a rubber ring is used to seal the circuits that pass through the housing 1 and connect to the electronic components. This makes the electrical box more waterproof, dustproof, and insect-proof, making it more suitable for air conditioner outdoor units.

[0028] In some embodiments, as Figure 2 and Figure 3 As shown, the electrical box also includes an air duct 6, which is sleeved on the heat exchange plate 22, and the fan 23 is located at the air inlet end of the air duct 6. The air duct 6 is provided with an air outlet 621 away from the heat exchange plate 22, and the air outlet 621 is arranged toward the electronic components. It should be noted that the air duct 6, as the name implies, is a hollow structure with at least two openings. In this embodiment, the air outlet end corresponding to the air inlet end of the air duct 6 is the air outlet 621. It can be understood that the cold air around the heat exchange plate 22 can be gathered by the air duct 6 to prevent the cold air from flowing in the housing 1, reducing losses, and the cold air can be discharged to the electronic components in a concentrated manner through the fan 23 to achieve precise heat exchange.

[0029] In some embodiments, as Figure 2 and Figure 3 As shown, the air guide tube 6 includes a first cylinder 61 and a second cylinder 62. The first cylinder 61 is sleeved on the heat exchange fins 22, and the second cylinder 62 is connected to the end of the first cylinder 61 away from the fan 23. A plurality of air outlet holes 621 are arranged side by side on the second cylinder 62. The inner diameter of the first cylinder 61 is larger than the inner diameter of the second cylinder 62. It can be understood that the multiple air outlet holes 621 can increase the air outlet range, thereby contacting more electronic components for heat exchange in a short period of time. At the same time, the first cylinder 61 with a relatively large inner diameter can accommodate more air blown in from the fan 23, thereby exchanging heat with the heat exchange fins 22 and generating a large amount of cold air. The second cylinder 62 with a relatively small inner diameter then increases the static pressure of the air outlet, speeding up the discharge of the cold air from the air outlet holes 621, improving the heat dissipation efficiency of the electronic components, and reducing the power consumption of the fan 23.

[0030] In some embodiments, as Figure 2 and Figure 3 As shown, the air duct 6 includes a first barrel 61 and a second barrel 62. The first barrel 61 is sleeved on the heat exchange fins 22, and the second barrel 62 is connected to the end of the first barrel 61 away from the fan 23. The first barrel 61 extends in a first direction, and the second barrel 62 extends in a second direction. The first and second directions are perpendicular or inclined. It can be understood that this arrangement allows the air inlet end of the air duct 6 and the air outlet 621 to be located in different directions, which facilitates the formation of a flow field within the housing 1 and promotes air circulation and heat exchange.

[0031] In some embodiments, as Figure 1 As shown, the electronic components include a drive board 3, a main control board 4, and a reactor 5. The drive board 3 is arranged toward the air outlet 621, and the main control board 4 is located on the side of the drive board 3 away from the air outlet 621. The reactor 5 is arranged on the drive board 3 and faces the air outlet 621. It should be noted that the main function of the drive board 3 is to receive instructions from the main control board 4 or other air-conditioning equipment and convert them into control signals to control or drive other hardware devices of the air conditioner. In this embodiment, the drive board 3 refers to the drive board 3 of the air-conditioning compressor. The main control board 4 refers to a circuit board used for control. The reactor 5 can also be called an inductor, which has the function of preventing current changes.

[0032] It is understandable that, according to the flow direction of the cold air, the driving board 3 and the reactor 5 with relatively high temperature can be in contact with the cold air before the main control board 4 with relatively low temperature, which can improve the overall heat dissipation effect.

[0033] In some embodiments, the second cylinder 62 is positioned near one end of the housing 1, with the air outlet 621 facing the other end of the housing 1. The air inlet direction of the first cylinder 61 is opposite to the air outlet direction of the air outlet 621. It is understood that when the first and second directions are perpendicular, the air duct 6 has an L-shaped structure, and utilizes the sidewalls of the housing 1 to redirect the airflow from the air outlet 621, thereby forming a loop within the housing 1 and improving temperature uniformity within the housing 1.

[0034] In some embodiments, as Figure 2 and Figure 4 As shown, the heat exchanger 21 is provided on the surface of the driving plate 3. It is understood that direct contact between the driving plate 3 and the heat exchanger 21 allows the heat of the driving plate 3 to be transferred to the heat exchanger 21 by conduction between objects, which has a higher heat dissipation efficiency than conduction between gas and objects.

[0035] In some embodiments, one end of the heat exchanger 21 extends outside the housing 1 to exchange heat with the air outside the housing 1. Utilizing the air outside the housing 1 to exchange heat with the heat exchange element 2 has a simple structure and is easy to implement.

[0036] In some embodiments, as Figure 4As shown, the heat exchanger 2 also includes a first refrigerant pipe 24 and a second refrigerant pipe 25 connected to the heat exchanger 21. The first refrigerant pipe 24 and the second refrigerant pipe 25 are respectively connected to the refrigerant circulation circuit, so that the refrigerant in the refrigerant circulation circuit cools the heat exchange fins 22 on the heat exchanger 21. It should be noted that the refrigerant circulation circuit refers to the piping structure used to circulate refrigerant between multiple components in the air conditioning system. It can be understood that the existing refrigerant in the air conditioning system is used to provide cooling for the heat exchanger 2, eliminating the need for an additional cooling source. In addition, because the refrigerant flows in opposite directions during cooling and heating operations in the air conditioning system, the refrigerant flowing into the heat exchanger 21 can be either high or low. When the low-temperature refrigerant enters the heat exchanger 21, it provides cooling to the housing 1. When the high-temperature refrigerant enters the heat exchanger 21, it is typically around 50°C, which is relatively low compared to the temperature of some electronic components and therefore has less impact on the overall temperature of the electrical box.

[0037] In some embodiments, the heat exchanger 2 further includes a first refrigerant pipe 24 and a second refrigerant pipe 25 connected to the heat exchanger 21. The first refrigerant pipe 24 and the second refrigerant pipe 25 are each connected to a refrigerant circulation circuit to utilize the refrigerant in the refrigerant circulation circuit to cool the heat exchange fins 22 on the heat exchanger 21. One end of the heat exchanger 21 extends outside the housing 1 to exchange heat with the air outside the housing 1. In this way, when high-temperature refrigerant enters the heat exchanger 21, the air outside the housing 1 can also be used to provide cooling for the heat exchanger 21.

[0038] In some embodiments, a refrigerant flow channel is provided in the heat exchanger 21, and the refrigerant flow channel is S-shaped, so that the refrigerant can fully contact the heat exchanger 21, thereby improving the heat exchange efficiency.

[0039] In some embodiments, as Figure 4 As shown, a plurality of heat exchange fins 22 are arranged side by side at intervals, and an angle is formed between the rotating shaft of the fan 23 and the plurality of heat exchange fins 22 so that air flows out through the gaps between the plurality of heat exchange fins 22. It can be understood that this ensures that the cold air inside the air guide 6 can flow out smoothly.

[0040] In some embodiments, as Figure 4 As shown, the plurality of heat exchange fins 22 are respectively of curved plate structure or straight plate structure. It is understandable that the curved plate structure can further increase the heat exchange area in a limited space, and the straight plate structure is conducive to the rapid discharge of cold air and the discharge of hot air.

[0041] An embodiment of the present application also provides an air-conditioning outdoor unit, which includes an electrical box. The specific structure of the electrical box refers to the above embodiment. Since this electrical box adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0042] In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts not described in detail in a particular embodiment, please refer to the relevant descriptions of other embodiments. In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features.

[0043] The above is a detailed introduction to the electrical box provided in the embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. At the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An electrical appliance box, characterized in that: The invention comprises a housing (1), a heat exchanger (2) and electronic components, wherein the heat exchanger (2) and the electronic components are both arranged in the housing (1), the heat exchanger (2) comprises a fan (23) and a heat exchanger (21), the heat exchanger (21) is provided with a heat exchange plate (22), the heat exchange plate (22) is located on the air outlet side of the fan (23), and the fan (23) is used to blow air around the heat exchange plate (22) toward the electronic components to exchange heat for the electronic components.

2. The electrical box according to claim 1, characterized in that: The invention also includes an air guide tube (6), wherein the air guide tube (6) is sleeved on the heat exchange plate (22), the fan (23) is located at the air inlet end of the air guide tube (6), and the air guide tube (6) is provided with an air outlet hole (621) away from the heat exchange plate (22), and the air outlet hole (621) is arranged toward the electronic component.

3. The electrical box according to claim 2, characterized in that: The air guide tube (6) comprises a first cylinder (61) and a second cylinder (62), wherein the first cylinder (61) is sleeved on the heat exchange plate (22), and the second cylinder (62) is connected to an end of the first cylinder (61) away from the fan (23), and a plurality of air outlet holes (621) are arranged side by side on the second cylinder (62), and the inner diameter of the first cylinder (61) is larger than the inner diameter of the second cylinder (62).

4. The electrical appliance box according to claim 2, characterized in that: The air guide tube (6) comprises a first cylinder (61) and a second cylinder (62), wherein the first cylinder (61) is sleeved on the heat exchange plate (22), and the second cylinder (62) is connected to an end of the first cylinder (61) away from the fan (23), the first cylinder (61) extends along a first direction, and the second cylinder (62) extends along a second direction, and the first direction and the second direction are perpendicular or inclined.

5. The electrical appliance box according to claim 4, characterized in that: The second cylinder (62) is arranged close to one end of the shell (1), the air outlet (621) faces the other end of the shell (1), and the air inlet direction of the first cylinder (61) is opposite to the air outlet direction of the air outlet (621).

6. The electrical appliance box according to claim 4, characterized in that: The electronic components include a drive board (3), a main control board (4), and a reactor (5); the drive board (3) is arranged toward the air outlet (621); the main control board (4) is located on a side of the drive board (3) away from the air outlet (621); and the reactor (5) is arranged on the drive board (3) and toward the air outlet (621).

7. The electrical appliance box according to claim 6, characterized in that: The heat exchanger (21) is arranged on the surface of the driving plate (3).

8. The electrical appliance box according to claim 1, characterized in that: The heat exchange element (2) further includes a first refrigerant pipe (24) and a second refrigerant pipe (25) connected to the heat exchanger (21); the first refrigerant pipe (24) and the second refrigerant pipe (25) are respectively used to be connected to a refrigerant circulation circuit so as to utilize the refrigerant in the refrigerant circulation circuit to cool the heat exchange plate (22) on the heat exchanger (21).

9. The electrical appliance box according to claim 2, characterized in that: A plurality of heat exchange fins (22) are arranged side by side at intervals, and an angle is formed between the rotating shaft of the fan (23) and the plurality of heat exchange fins (22), so that airflow flows out through the gaps between the plurality of heat exchange fins (22).

10. An air conditioner outdoor unit, characterized in that: The invention comprises an electrical box as claimed in any one of claims 1 to 9.

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