Air conditioner outdoor unit

Abstract

The utility model discloses an air conditioner outdoor unit which comprises an electric control box and an air duct structural member, the electric control box comprises a box body and a circuit board, the circuit board is arranged in the box body, the electric control box comprises a heat dissipation air duct located outside the box body and used for heat dissipation, and the air duct structural member is matched with a liquid storage device of the air conditioner outdoor unit. And the refrigerating air channel is communicated with the heat dissipation air channel. The air duct structural member and the liquid storage device are matched to form the refrigeration air duct exchanging heat with the liquid storage device, low-temperature airflow flowing through the refrigeration air duct is guided to the electric control box, the heat dissipation effect of the electric control box is improved under the condition that the specification of a device does not need to be improved and the size of a heat dissipation piece does not need to be increased, the working temperature of a circuit board of the electric control box is effectively reduced, the manufacturing cost is reduced, and the service life is prolonged. And the working reliability is improved.

Description

Technical Field

[0001] The utility model relates to the field of air conditioning equipment, in particular to an outdoor unit of an air conditioner. Background Art

[0002] Power devices in the air conditioner's electronic control generate heat during operation, and the greater the power of the electronic control, the more heat is generated. If this heat cannot be dissipated in time, it will cause the temperature of the power devices to rise. The greater the heat, the higher the temperature. When the temperature exceeds the critical operating temperature of the device, it will cause damage to the device. Therefore, in the air conditioning system, it is very important to design good heat dissipation for the electronic control, which is related to whether the air conditioner can operate reliably, continuously and at full load.

[0003] In the related art, the air-cooled heat dissipation method is used to dissipate heat from the electronic control. The heat dissipation effect depends on the flow of air in the surrounding environment and is easily affected by external factors. When the outdoor air flow temperature is high, the heat dissipation effect is poor. Often, large heat sinks or additional measures such as increasing the device specifications are required to improve the heat dissipation, resulting in an increase in volume and manufacturing cost. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the utility model provides an outdoor unit of an air conditioner, which can improve the heat dissipation effect of the electronic control box without increasing the device specifications and the volume of the heat dissipation parts, thereby reducing the manufacturing cost and improving the working reliability of the outdoor unit of the air conditioner.

[0005] The outdoor unit of an air conditioner according to an embodiment of the utility model includes: an electronic control box, which includes a box body and a circuit board, the circuit board is arranged in the box body, and the electronic control box includes a heat dissipation air duct located outside the box body and used for heat dissipation; an air duct structure member, which cooperates with the liquid receiver to form a refrigeration air duct for heat exchange with the liquid receiver, and the refrigeration air duct is communicated with the heat dissipation air duct.

[0006] The outdoor unit of an air conditioner according to an embodiment of the utility model forms a refrigeration air duct for heat exchange with the liquid receiver through the cooperation of the air duct structure member and the liquid receiver. The refrigeration air duct is communicated with the heat dissipation air duct, and guides the low-temperature air flow flowing through the refrigeration air duct to the electronic control box to dissipate heat from the electronic control box. Without increasing the device specifications and the volume of the heat dissipation parts, the heat dissipation effect of the electronic control box is improved, the working temperature of the circuit board of the electronic control box is effectively reduced, the manufacturing cost is reduced, and the working reliability of the outdoor unit of the air conditioner is also improved.

[0007] In some embodiments, the air duct structure member includes a cover body portion, the cover body portion covers the liquid receiver, and at least part of the refrigeration air duct is formed between the cover body portion and the liquid receiver.

[0008] In some embodiments, the length direction of the cover body extends along the axial direction of the liquid reservoir, and the two ends of the length of the cover body are respectively a cover body air inlet end and a cover body air outlet end, and the refrigeration air duct takes in air through the cover body air inlet end.

[0009] In some embodiments, the compressor of the air conditioner outdoor unit includes a compressor body and a liquid reservoir, the axial direction of the liquid reservoir is parallel to the axial direction of the compressor body, the liquid reservoir is arranged on the circumferential side of the compressor body, the inlet of the liquid reservoir is the return air port of the compressor, the outlet of the liquid reservoir is connected to the inlet of the compressor body, and the outlet of the compressor body is the exhaust port of the compressor; the length of the cover body is greater than 1 / 2 of the axial length of the liquid reservoir; and / or the central angle of the cover body extending along the circumference of the liquid reservoir is 30°-270°.

[0010] In some embodiments, the cover body portion includes a first cover portion and a second cover portion arranged in sequence from the cover body air outlet end to the cover body air inlet end, an end of the first cover portion away from the second cover portion is formed as the cover body air outlet end, an end of the second cover portion away from the first cover portion is formed as the cover body air inlet end, and the second cover portion is formed in a flared form in a direction away from the first cover portion.

[0011] In some embodiments, the first cover portion is formed in a uniform cross-sectional form, and along the axial direction of the reservoir, an extension length of the first cover portion is greater than an extension length of the second cover portion.

[0012] In some embodiments, the outer surface of the liquid reservoir has a heat dissipation protrusion, and the heat dissipation protrusion is located inside the cover body.

[0013] In some embodiments, the heat dissipation protrusion is formed into a long strip, the length direction of the heat dissipation protrusion extends along the axial direction of the liquid reservoir, and the heat dissipation protrusion is multiple and arranged at intervals along the circumference of the liquid reservoir.

[0014] In some embodiments, the heat dissipation protrusion extends to the cover body to exchange heat with the cover body.

[0015] In some embodiments, the air duct structure also includes: an air guide portion, the refrigeration air duct includes an upstream air duct section defined between the cover body and the liquid reservoir, and a downstream air duct section defined by the air guide portion, the inlet of the air guide portion is connected to the cover body so that the downstream air duct section is connected to the upstream air duct section, and the outlet of the air guide portion extends to the electrical control box so that the downstream air duct section is connected to the heat dissipation air duct.

[0016] In some embodiments, the cross-sectional area of the refrigeration air duct at the inlet of the air guiding part is smaller than the cross-sectional area at the air inlet end of the cover body part of the cover body.

[0017] In some embodiments, the box body is a sealed box body; and / or, the electric control box includes an outer cover, and a heat dissipation air duct is formed between the outer cover and the box body.

[0018] In some embodiments, the outdoor air conditioner includes a housing and a middle partition plate disposed inside the housing. The space inside the housing includes a blower chamber and a compressor chamber separated on both sides of the middle partition plate. A ventilation opening communicating with the compressor chamber is formed on the housing. The compressor of the outdoor air conditioner includes a compressor body and the liquid receiver. The inlet of the liquid receiver is the suction port of the compressor. The outlet of the liquid receiver is communicated with the inlet of the compressor body. The outlet of the compressor body is the discharge port of the compressor. The compressor is disposed in the compressor chamber. A blower is disposed in the blower chamber. The electric control box is disposed above the middle partition plate; the heat dissipation air duct includes an air duct inlet and an air duct outlet. The air duct inlet is located in the compressor chamber and is communicated with the refrigeration air duct. The air duct outlet is located in the blower chamber and is communicated on the air inlet side of the blower.

[0019] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0020] Figure 1 is a partial structural schematic diagram of an outdoor air conditioner according to an embodiment of the present utility model;

[0021] Figure 2 is a partial cross-sectional view of an outdoor air conditioner according to an embodiment of the present utility model;

[0022] Figure 3 is according to Figure 2 a partial enlarged view of area A in the shown example;

[0023] Figure 4 is another partial structural schematic diagram of an outdoor air conditioner according to an embodiment of the present utility model;

[0024] Figure 5 is a partial structural top view of an outdoor air conditioner according to an embodiment of the present utility model;

[0025] Figure 6 is according to Figure 4 a partial enlarged view of area B in the shown example;

[0026] Figure 7 is according to Figure 4Partial enlarged view of region C of the illustrated example.

[0027] Reference numerals:

[0028] Outdoor unit 100 of an air conditioner;

[0029] Compressor 1; Compressor body 11; Liquid receiver 12; Heat dissipation protrusion 121;

[0030] Electric control box 2; Box body 21; Circuit board 22; Heat dissipation air duct 23; Air duct inlet 231; Air duct outlet 232; Outer cover 24; Electric control radiator 25;

[0031] Air duct structure member 3; Refrigeration air duct 3a; Upstream air duct section 3a1; Downstream air duct section 3a2; Cover body portion 31; Cover body air inlet end 31a; Cover body air outlet end 31b; First cover portion 311; Second cover portion 312; Central angle α of the cover body portion extending along the circumference of the liquid receiver; Air guiding portion 32; Inlet of the air guiding portion 32a; First air guiding portion 321; Second air guiding portion 322;

[0032] Housing 4; Fan cavity 4a; Compressor cavity 4b; Ventilation opening 41;

[0033] Middle partition 5;

[0034] Outdoor heat exchanger 6. Detailed implementation manners

[0035] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0037] The outdoor unit 100 of an air conditioner according to an embodiment of the present utility model will be described below with reference to the drawings.

[0038] The outdoor unit 100 of an air conditioner according to an embodiment of the present utility model, as Figures 1 - 3As shown in the figure, the outdoor unit 100 of the air conditioner includes: a liquid receiver 12, an electric control box 2, and an air duct structure member 3. The electric control box 2 includes a box body 21 and a circuit board 22. The circuit board 22 is arranged inside the box body 21. The electric control box 2 includes a heat dissipation air duct 23 located outside the box body 21 and used for heat dissipation. The air duct structure member 3 cooperates with the liquid receiver 12 to form a refrigeration air duct 3a for heat exchange with the liquid receiver 12. The refrigeration air duct 3a is communicated with the heat dissipation air duct 23. The refrigeration air duct 3a forms an air duct that can provide cold by means of heat exchange with the liquid receiver 12.

[0039] The refrigerant in the liquid receiver 12 is in a gas-liquid mixed state. The temperature of the refrigerant in the liquid receiver 12 is relatively low and has a phase change tendency of vaporization and heat absorption. Therefore, after the air flow passing through the liquid receiver 12 exchanges heat with the liquid receiver 12, the temperature of the air flow decreases. Exemplarily, the compressor 1 includes a compressor body 11 and a liquid receiver 12. The inlet of the liquid receiver 12 is the suction port of the compressor 1. The outlet of the liquid receiver 12 is communicated with the inlet of the compressor body 11. The outlet of the compressor body 11 is the discharge port of the compressor 1. The suction port of the compressor 1 sucks the refrigerant delivered from the evaporator. The compressor 1 processes the refrigerant into a high-temperature and high-pressure gas state and discharges it from the discharge port of the compressor 1. The liquid receiver 12 is connected between the evaporator and the compressor body 11. The inlet of the liquid receiver 12 is the suction port of the compressor 1. The refrigerant flowing out of the evaporator first enters the liquid receiver 12. The liquid receiver 12 plays the roles of storage, gas-liquid separation, filtration, silencing, and refrigerant buffering. The gaseous refrigerant flowing out of the liquid receiver 12 then enters the compressor body 11. After being compressed by the compressor body 11, the refrigerant is discharged from the discharge port of the compressor 1.

[0040] When the electric control box 2 works, heat will be generated. And the greater the power of the electric control box 2, the greater the heat generated by the circuit board 22 and the heating devices. The heat of the circuit board 22 and the heating devices is conducted to the box body 21. The box body 21 exchanges heat with the air flow in the heat dissipation air duct 23 outside the box body 21 to dissipate heat from the electric control box 2. However, the outdoor unit 100 of the air conditioner is arranged outdoors, and the temperature of the outdoor air flow is relatively high. The way of only using the outdoor air flow to dissipate heat from the box body 21 has poor heat dissipation effect, resulting in a relatively high working temperature of the electric control box 2, and there is a risk of damaging the electric control box 2 and causing failure. In the related art, a large-sized electric control box and a large radiator are used to accelerate the heat dissipation of the electric control box to ensure the normal operation of the air conditioner. This way will increase the manufacturing cost; or the way of reducing the operating frequency of the compressor to reduce the heat generation of the electric control box is used to ensure the normal operation of the air conditioner, which greatly affects the refrigeration effect of the air conditioner in the case of a relatively high outdoor use environment temperature and reduces the refrigeration effect of the air conditioner.

[0041] Therefore, the air conditioner outdoor unit 100 according to the embodiment of the present utility model is provided with an air duct structure member 3. The air duct structure member 3 cooperates with the liquid receiver 12 to form a refrigeration air duct 3a for heat exchange with the liquid receiver 12. The refrigeration air duct 3a is communicated with the heat dissipation air duct 23, and the low-temperature air flow flowing through the refrigeration air duct 3a is guided to the heat dissipation air duct 23. The electric control box 2 is cooled by using the relatively low-temperature air flow after heat exchange with the liquid receiver 12, so as to improve the heat dissipation effect of the electric control box 2, without the need to increase the volume of the electric control box or add a large radiator to accelerate the heat dissipation of the electric control box, thereby reducing the manufacturing cost.

[0042] Moreover, the heat dissipation of the electric control box 2 is good, and there is no need to reduce the operating frequency of the compressor to reduce the heat generation of the electric control box, which can ensure the refrigeration effect of the air conditioner under the condition of a relatively high outdoor use ambient temperature.

[0043] According to the air conditioner outdoor unit 100 of the embodiment of the present utility model, the refrigeration air duct 3a for heat exchange with the liquid receiver 12 is formed by the cooperation of the air duct structure member 3 and the liquid receiver 12. The refrigeration air duct 3a is communicated with the heat dissipation air duct 23, and the low-temperature air flow flowing through the refrigeration air duct 3a is guided to the electric control box 2 to cool the electric control box 2. Without the need for components to improve specifications and increase the volume of the heat dissipation member, the heat dissipation effect of the electric control box 2 is improved, the working temperature of the circuit board 22 of the electric control box 2 is effectively reduced, which not only reduces the manufacturing cost, but also improves the working reliability of the air conditioner outdoor unit 100.

[0044] In some embodiments of the present utility model, as Figure 1 and Figure 4 shown, the air duct structure member 3 includes a cover body portion 31. The cover body portion 31 covers the liquid receiver 12 from the outside, and at least part of the refrigeration air duct 3a is formed between the cover body portion 31 and the liquid receiver 12.

[0045] The cover body portion 31 covers the liquid receiver 12 to gather the air flow after heat exchange with the liquid receiver 12, reduce the air flow dispersion, and then guide the air flow after heat exchange with the liquid receiver 12 to the heat dissipation air duct 23 to cool the electric control box 2.

[0046] In some embodiments of the present utility model, as Figure 4 shown, the length direction of the cover body portion 31 extends along the axial direction of the liquid receiver 12. The two length ends of the cover body portion 31 are respectively a cover body air inlet end 31a and a cover body air outlet end 31b, and the refrigeration air duct 3a intakes air through the cover body air inlet end 31a.

[0047] The length direction of the cover part 31 matches the length direction of the liquid storage device 12, and the cover air inlet end 31a at one end of the length of the cover part 31 is used for air inlet. After the air flow flows in from the cover air inlet end 31a, it flows along the axial direction of the liquid storage device 12 towards the cover air outlet end 31b. When the air flow flows in the refrigeration air duct 3a between the cover part 31 and the liquid storage device 12, the contact area with the liquid storage device 12 is large, and the air flow fully contacts and exchanges heat with the liquid storage device 12, which can improve the heat exchange effect between the air flow and the liquid storage device 12 and is beneficial to the heat dissipation of the electronic control box 2 by the air flow.

[0048] In some embodiments of the present utility model, such as Figure 2 and Figure 4 shown, the length L of the cover part 31 is greater than 1 / 2 of the axial length M of the liquid storage device 12.

[0049] The cover part 31 extends along the axial direction of the liquid storage device 12, and the length L of the cover part 31 is greater than half of the axial length M of the liquid storage device 12, so that the length of the refrigeration air duct 3a between the cover part 31 and the liquid storage device 12 is greater than half of the axial length M of the liquid storage device 12. When the air flow flows in the refrigeration air duct 3a between the cover part 31 and the liquid storage device 12, the contact area with the liquid storage device 12 is large, and the heat exchange effect between the air flow and the liquid storage device 12 can be improved.

[0050] In some embodiments of the present utility model, the length L of the cover part 31 is greater than the axial length M of the liquid storage device 12, and the cover part 31 completely covers both axial ends of the liquid storage device 12, so that the air flow fully exchanges heat with the liquid storage device 12.

[0051] In some embodiments of the present utility model, such as Figure 5 shown, the axial direction of the liquid storage device 12 is parallel to the axial direction of the compressor body 11, the liquid storage device 12 is arranged on the circumferential side of the compressor body 11, and the central angle α of the cover part 31 extending along the circumferential direction of the liquid storage device 12 is 30° - 270°.

[0052] It can be understood that the liquid storage device 12 and the compressor body 11 are connected by pipelines, and pipelines are also connected between the liquid storage device 12 and the evaporator. Therefore, the central angle α of the cover part 31 extending along the circumferential direction of the liquid storage device 12 is 30° - 270°, and the liquid storage device 12 is not completely covered, which can avoid external components of the liquid storage device 12 and also reduce the manufacturing cost of the cover part 31.

[0053] Optionally, the central angle α of the cover part 31 extending along the circumferential direction of the liquid storage device 12 can be 60°, 90°, 150°, 180°, 225°, 270°, etc.

[0054] In some specific embodiments of the present utility model, such as Figure 5 shown, the central angle α of the cover part 31 extending along the circumferential direction of the liquid storage device 12 is 180°, and the cross-sectional profile of the cover part 31 is semi-circular.

[0055] In some embodiments of the present utility model, such as Figure 2 and Figure 4 shown, the cover body portion 31 includes a first cover portion 311 and a second cover portion 312 arranged in sequence along the direction from the air outlet end 31b of the cover body to the air inlet end 31a of the cover body. One end of the first cover portion 311 away from the second cover portion 312 forms the air outlet end 31b of the cover body, and one end of the second cover portion 312 away from the first cover portion 311 forms the air inlet end 31a of the cover body. The second cover portion 312 is formed in a flared form facing away from the first cover portion 311.

[0056] When the air flow enters the refrigeration air duct 3a between the air inlet end 31a of the cover body and the liquid storage device 12 from the cover body portion 31, it first flows into the second cover portion 312, and then flows along the first cover portion 311 along the axial direction of the liquid storage device 12. The cross-sectional area of the air inlet end 31a of the cover body defined by the second cover portion 312 is larger than the cross-sectional area at the connection between the second cover portion 312 and the first cover portion 311. The second cover portion 312 is formed in a flared form with a larger air inlet end 31a.

[0057] By designing the second cover portion 312 as a flared structure, the flow area for the air flow to enter the refrigeration air duct 3a can be increased, which is beneficial to improving the air intake volume of the refrigeration air duct 3a.

[0058] In some embodiments of the present utility model, such as Figure 2 and Figure 4 shown, the first cover portion 311 is formed in an equal cross-section form, and along the axial direction of the liquid storage device 12, the extension length of the first cover portion 311 is greater than the extension length of the second cover portion 312.

[0059] The second cover portion 312 is formed in a flared form facing away from the first cover portion 311, and the first cover portion 311 is formed in an equal cross-section form. The shape change of the cover body portion 31 from the air inlet end 31a of the cover body to the air outlet end 31b is from a converging horn shape to an equal-thickness tubular shape. The second cover portion 312 converges more air flow into the refrigeration air duct 3a, and then the air flow flows smoothly along the first cover portion 311, improving the smoothness of the air flow and being beneficial to the heat exchange between the air flow and the liquid storage device 12.

[0060] In some embodiments of the present utility model, such as Figure 7 shown, the outer surface of the liquid storage device 12 has heat dissipation protrusions 121, and the heat dissipation protrusions 121 are located inside the cover body portion 31.

[0061] The heat dissipation protrusions 121 are in contact with the liquid reservoir 12 for heat exchange. The heat dissipation protrusions 121 and the liquid reservoir 12 have good thermal conductivity. By providing the heat dissipation protrusions 121, the contact heat exchange area between the air flow and the liquid reservoir 12 can be increased, and the heat exchange effect between the air flow and the liquid reservoir 12 can be enhanced. Moreover, the heat dissipation protrusions 121 are located in the refrigeration air duct 3a formed between the cover body portion 31 and the liquid reservoir 12, and the heat dissipation protrusions 121 are surrounded by the cover body portion 31, which can reduce the energy loss of the heat exchange between the liquid reservoir 12 and the air flow in the non-refrigeration air duct 3a, and further enhance the heat exchange effect between the air flow in the heat dissipation air duct 23 and the liquid reservoir 12.

[0062] Optionally, the heat dissipation protrusions 121 and the liquid reservoir 12 are integrally formed, which can improve the structural stability of the heat dissipation protrusions 121. Or, alternatively, the heat dissipation protrusions 121 and the liquid reservoir 12 are of a split structure, and the heat dissipation protrusions 121 are attached to the surface of the radiator 25.

[0063] In some embodiments of the present invention, as Figure 7 shown, the heat dissipation protrusions 121 are formed in a long strip shape, the length direction of the heat dissipation protrusions 121 extends along the axial direction of the liquid reservoir 12, and there are a plurality of heat dissipation protrusions 121 which are arranged at intervals along the circumferential direction of the liquid reservoir 12.

[0064] The heat dissipation protrusions 121 in the shape of long strips have a large surface area, which is beneficial to improving the heat exchange effect of the air flow. The length direction of the heat dissipation protrusions 121 extends along the axial direction of the liquid reservoir 12, which can cover the axial area of the liquid reservoir 12 and increase the heat dissipation effect of the liquid reservoir 12.

[0065] There are a plurality of heat dissipation protrusions 121, which can further increase the contact heat exchange area with the air flow and improve the heat exchange effect of the air flow. The plurality of heat dissipation protrusions 121 are arranged at intervals along the circumferential direction of the liquid reservoir 12, so that the heat dissipation protrusions 121 are evenly distributed in the circumferential direction of the liquid reservoir 12. The air flow in the heat dissipation air duct 23 flows between the plurality of heat dissipation protrusions 121 and along the length direction of the heat dissipation protrusions 121, optimizing the air flow path and enabling sufficient heat exchange of the air flow.

[0066] In some embodiments of the present invention, the heat dissipation protrusions 121 extend to the cover body portion 31 to be in contact with the cover body portion 31 for heat exchange.

[0067] When the heat dissipation protrusions 121 extend to the cover body portion 31, on the one hand, the contact between the heat dissipation protrusions 121 and the cover body portion 31 can improve the layout stability of the cover body portion 31 and reduce the situation of the cover body portion 31 being displaced due to force; on the other hand, the heat dissipation protrusions 121 are in contact with the cover body portion 31 for heat exchange, and the air flow in the refrigeration air duct 3a can not only be in contact with the liquid reservoir 12 and the heat dissipation protrusions 121 for heat exchange, but also be in contact with the cover body portion 31 for heat exchange, enabling sufficient heat exchange of the air flow.

[0068] In some other embodiments of the present utility model, the heat dissipation protrusions 121 are formed as columns extending along the radial direction of the liquid storage device 12. There are multiple heat dissipation protrusions 121, which are arranged at intervals along the axial and circumferential directions of the liquid storage device 12. This can increase the contact heat exchange area between the air flow and the liquid storage device 12 and enhance the heat exchange effect between the air flow and the liquid storage device 12.

[0069] In some embodiments of the present utility model, as Figure 2 , Figure 4 and Figure 6 shown, the air duct structure member 3 further includes: a wind guiding part 32. The refrigeration air duct 3a includes an upstream air duct section 3a1 defined between the cover body part 31 and the liquid storage device 12, and a downstream air duct section 3a2 defined by the wind guiding part 32. The inlet of the wind guiding part 32 is connected to the cover body part 31 so that the downstream air duct section 3a2 communicates with the upstream air duct section 3a1. The outlet of the wind guiding part 32 extends to the electric control box 2 so that the downstream air duct section 3a2 communicates with the heat dissipation air duct 23.

[0070] The air flow in the refrigeration air duct 3a flows from the upstream air duct section 3a1 to the downstream air duct section 3a2, that is, the air flow in the refrigeration air duct 3a flows from the cover body part 31 to the wind guiding part 32, and then the air flow flows from the downstream air duct section 3a2 of the refrigeration air duct 3a to the heat dissipation air duct 23. The cover body part 31 covers the liquid storage device 12 to gather the air flow after heat exchange with the liquid storage device 12 and reduce the air flow dispersion. Then, the wind guiding part 32 guides the air flow in the cover body part 31 to the heat dissipation air duct 23 to dissipate heat from the electric control box 2, and the wind guiding part 32 plays a guiding role.

[0071] In some embodiments of the present utility model, as Figure 2 shown, the cross-sectional area of the refrigeration air duct 3a at the inlet 32a of the wind guiding part 32 is smaller than the cross-sectional area at the cover body air inlet end 31a of the cover body part 31.

[0072] The cross-sectional area of the inlet of the downstream air duct section 3a2 is smaller than the cross-sectional area of the inlet of the upstream air duct section 3a1, so that the air flow in the upstream air duct section 3a1 accelerates and flows into the downstream air duct section 3a2, and the air flow quickly passes through the wind guiding part 32. The air flow can be quickly introduced into the heat dissipation air duct 23, reducing the air flow energy loss and improving the heat dissipation effect on the electric control box 2.

[0073] In some embodiments of the present utility model, as Figure 4 shown, the wind guiding part 32 includes a first wind guiding part 321 and a second wind guiding part 322. One end of the first wind guiding part 321 away from the second wind guiding part 322 communicates with the heat dissipation air duct 23, and one end of the second wind guiding part 322 away from the first wind guiding part 321 is connected to the cover body part 31.

[0074] One end of the second air guiding part 322 away from the first air guiding part 321 is configured as the inlet of the air guiding part 32. The flow area of the first air guiding part 321 is smaller than the flow area of the refrigeration air duct 3a at the inlet 32a of the air guiding part. The flow area for the air flow to flow from the second air guiding part 322 to the first air guiding part 321 is reduced, which can increase the air flow velocity, quickly introduce the air flow into the heat dissipation air duct 23, reduce the air flow energy loss, and improve the heat dissipation effect on the electronic control box 2.

[0075] As Figure 4 shown, the second air guiding part 322 is formed in a reduced orifice form facing the direction of the first air guiding part 321. The second air guiding part 322 smoothly guides the air flow in the upstream air duct section 3a1 to the first air guiding part 321, improves the air flow fluidity, and is conducive to the air flow flowing to the heat dissipation air duct 23.

[0076] In some embodiments of the present utility model, as Figure 3 and Figure 6 shown, the box body 21 is a sealed box body.

[0077] It should be noted that with the improvement of environmental protection requirements for the refrigerant in the air conditioner, due to its cleanliness, refrigerant R290 will not damage the ozone layer and has a minimal impact on the greenhouse effect, and is gradually replacing traditional refrigerants such as R32 and being applied to air conditioners. However, refrigerant R290 is flammable. When refrigerant R290 leaks at a low concentration, it may burn and explode when encountering a low-energy spark. Therefore, the use safety performance of refrigerant R290 needs to be more guaranteed.

[0078] By designing the box body 21 of the electronic control box 2 as a sealed box body, it is avoided that the flammable refrigerant leaks and contacts the heating devices and electrical components inside the electronic control box 2, improving safety.

[0079] In some embodiments of the present utility model, as Figure 3 and Figure 4 shown, the box body 21 is a sealed box body. The electronic control box 2 further includes an outer cover 24, and a heat dissipation air duct 23 is formed between the outer cover 24 and the box body 21.

[0080] The box body 21 is a sealed box body, isolating the components inside the box body 21 from the external environment and improving the use safety. The heat of the circuit board 22 and the heating devices is conducted to the box body 21 and dissipated by the air flow in the heat dissipation air duct 23 formed between the box body 21 and the outer cover 24.

[0081] In some embodiments of the present utility model, as Figure 3 and Figure 5 shown, the outer cover 24 is arranged closer to the compressor 1 than the box body 21. The outer cover 24 is configured as a structure that is open towards the box body 21, and the outer cover 24 and the box body 21 are spaced apart to form a heat dissipation air duct 23 between the outer cover 24 and the box body 21.

[0082] In some other embodiments of the present utility model, the electronic control box 2 includes an outer cover 24. A heat dissipation air duct 23 is formed between the outer cover 24 and the box body 21, and an air flow passage for the air flow to pass through is also provided inside the box body 21. The air flow conveyed from the refrigeration air duct 3a can flow into the heat dissipation air duct 23 to dissipate heat from the box body 21, and the air flow can also directly flow into the box body 21 to directly contact and exchange heat with the circuit board 22 and the heat generating components inside the box body 21.

[0083] In some embodiments of the present utility model, as Figure 1 , Figure 4 and Figure 5 shown, the outdoor air conditioner 100 includes a housing 4 and a middle partition 5 provided inside the housing 4. The space inside the housing 4 includes a blower chamber 4a and a compressor chamber 4b separated on both sides of the middle partition 5. A ventilation opening 41 communicating with the compressor chamber 4b is provided on the housing 4. The compressor 1 of the outdoor air conditioner 100 includes a compressor body 11 and a liquid receiver 12. The inlet of the liquid receiver 12 is the suction port of the compressor 1, the outlet of the liquid receiver 12 is communicated with the inlet of the compressor body 11, the outlet of the compressor body 11 is the discharge port of the compressor 1. The compressor 1 is arranged in the compressor chamber 4b, a blower is arranged in the blower chamber 4a, and the electronic control box 2 is arranged above the middle partition 5.

[0084] As Figure 2 and Figure 3 shown, the heat dissipation air duct 23 includes an air duct inlet 231 and an air duct outlet 232. The air duct inlet 231 is located in the compressor chamber 4b and is communicated with the refrigeration air duct 3a, and the air duct outlet 232 is located in the blower chamber 4a and is communicated with the air inlet side of the blower.

[0085] When the blower in the blower chamber 4a operates, air convection is generated in the blower chamber 4a, that is, a negative pressure is formed at the air duct outlet 232. Under the action of the negative pressure, the air duct inlet 231 of the heat dissipation air duct 23 sucks the air flow from the refrigeration air duct 3a, and the air flow flows into the heat dissipation air duct 23 to dissipate heat from the electronic control box 2. As Figure 3 shown, the dotted line with an arrow is the air flow direction. The air flow flows from the refrigerant air duct 3a into the air duct inlet 231 and flows along the heat dissipation air duct 23, and finally flows out from the air duct outlet 232.

[0086] At the same time, the air flow in the heat dissipation air duct 23 also drives the outside air to flow into the compressor chamber 4b from the ventilation opening 41 and flow into the refrigeration air duct 3a to exchange heat with the liquid receiver 12 to provide flowing heat dissipation air flow for the heat dissipation air duct 23.

[0087] Utilizing the operation of the wind wheel to drive the air flow in the refrigeration air duct 3a into the heat dissipation air duct 23 can save the cost of separately arranging a driving member in the refrigeration air duct 3a or the heat dissipation air duct 23, and can also reduce the structural complexity and reduce the air flow resistance.

[0088] In some embodiments of the present utility model, as Figure 1 shown, the ventilation opening 41 is arranged adjacent to the air inlet end 31a of the cover body portion 31, so as to facilitate the transportation of the external air flow of the housing 4 into the refrigeration air duct 3a, and the second cover portion 312 is configured in a flared shape, which is also beneficial to the air flow flowing in from the air inlet end 31a of the cover body.

[0089] In some embodiments of the present utility model, as Figure 3 and Figure 4 shown, the electric control box 2 further includes an electric control radiator 25. The electric control radiator 25 is at least partially located outside the box body 21, and the electric control radiator 25 is arranged at the air duct outlet 232 of the heat dissipation air duct 23.

[0090] The electric control radiator 25 is used for heat exchange with the heat generating components in the electric control box 2, and conducts the heat to the electric control radiator 25, thereby accelerating the heat dissipation of the electric control box 2. It should be noted that the way of heat exchange between the electric control radiator 25 and the heat generating components is not limited. For example, it can be direct or indirect contact heat transfer, or heat radiation heat transfer with a small gap, etc.

[0091] By arranging the electric control radiator 25 at the air duct outlet 232 of the heat dissipation air duct 23, the temperature of the air flow flowing through the heat dissipation air duct 23 and exchanging heat with the box body 21 is still lower than the outdoor air flow temperature. By using the air flow flowing through the heat dissipation air duct 23 and exchanging heat with the box body 21 to exchange heat with the electric control radiator 25 again, the air flow can be reused to dissipate heat from the electric control box 2 again, improving the heat dissipation effect of the electric control box 2.

[0092] In some embodiments of the present utility model, as Figure 1 and Figure 5 shown, the air conditioner outdoor unit 100 further includes an outdoor heat exchanger 6.

[0093] In some embodiments, the middle partition 5 separates the outdoor heat exchanger 6 in the fan cavity 4a. When the fan operates, air convection is generated, and air enters the fan cavity 4a to dissipate heat from the outdoor heat exchanger 6. The compressor 1 is arranged in the compressor cavity 4b to reduce the heat interference of the outdoor heat exchanger 6 on the compressor 1.

[0094] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0095] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0096] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0097] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0098] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions 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 a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0099] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An air conditioner outdoor unit, characterized in that: include: An electric control box, the electric control box comprising a box body and a circuit board, the circuit board being arranged in the box body, and the electric control box comprising a heat dissipation duct located outside the box body and used for heat dissipation; An air duct structural member cooperates with a liquid reservoir of the air conditioner outdoor unit to form a refrigeration air duct for heat exchange with the liquid reservoir, and the refrigeration air duct is communicated with the heat dissipation air duct.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The air duct structure comprises a cover body portion, the cover body portion covers the liquid reservoir, and at least a portion of the refrigeration air duct is formed between the cover body portion and the liquid reservoir.

3. The air conditioner outdoor unit according to claim 2, characterized in that: The length direction of the cover body extends along the axial direction of the liquid reservoir, and the two ends of the length of the cover body are respectively a cover body air inlet end and a cover body air outlet end, and the refrigeration air duct takes in air through the cover body air inlet end.

4. The air conditioner outdoor unit according to claim 3, characterized in that: The compressor of the air conditioner outdoor unit comprises a compressor body and a liquid accumulator, wherein the axial direction of the liquid accumulator is parallel to the axial direction of the compressor body, the liquid accumulator is arranged on the peripheral side of the compressor body, the inlet of the liquid accumulator is the return air port of the compressor, the outlet of the liquid accumulator is connected to the inlet of the compressor body, and the outlet of the compressor body is the exhaust port of the compressor; The length of the cover body is greater than 1 / 2 of the axial length of the liquid reservoir; and / or the central angle of the cover body extending along the circumference of the liquid reservoir is 30°-270°.

5. The air conditioner outdoor unit according to claim 3, characterized in that: The cover body portion includes a first cover portion and a second cover portion arranged in sequence from the cover body air outlet end to the cover body air inlet end, an end of the first cover portion away from the second cover portion is formed as the cover body air outlet end, an end of the second cover portion away from the first cover portion is formed as the cover body air inlet end, and the second cover portion is formed in a flared form toward a direction away from the first cover portion.

6. The air conditioner outdoor unit according to claim 5, characterized in that: The first cover portion is formed in a uniform cross-section, and along the axial direction of the liquid reservoir, an extension length of the first cover portion is greater than an extension length of the second cover portion.

7. The air conditioner outdoor unit according to any one of claims 2 to 6, characterized in that: The outer surface of the liquid storage container is provided with a heat dissipation protrusion, and the heat dissipation protrusion is located inside the cover body.

8. The air conditioner outdoor unit according to claim 7, characterized in that: The heat dissipation protrusion is formed in a long strip shape, and the length direction of the heat dissipation protrusion extends along the axial direction of the liquid reservoir. There are multiple heat dissipation protrusions and they are arranged at intervals along the circumference of the liquid reservoir.

9. The air conditioner outdoor unit according to claim 7, characterized in that: The heat dissipation protrusion extends to the cover body to contact and exchange heat with the cover body.

10. The air conditioner outdoor unit according to claim 2, characterized in that: The air duct structure also includes: an air guide portion, the refrigeration air duct includes an upstream air duct section defined between the cover body and the liquid reservoir, and a downstream air duct section defined by the air guide portion, the inlet of the air guide portion is connected to the cover body so that the downstream air duct section is connected to the upstream air duct section, and the outlet of the air guide portion extends to the electrical control box so that the downstream air duct section is connected to the heat dissipation air duct.

11. The air conditioner outdoor unit according to claim 10, characterized in that: The flow area of ​​the refrigeration air duct at the inlet of the air guide portion is smaller than the flow area at the air inlet end of the cover body.

12. The air conditioner outdoor unit according to claim 1, characterized in that: The box body is a sealed box body; and / or the electric control box includes an outer cover, and the heat dissipation duct is formed between the outer cover and the box body.

13. The air conditioner outdoor unit according to claim 1, characterized in that: The air-conditioning outdoor unit includes a shell and a middle partition plate arranged in the shell, the space in the shell includes a fan chamber and a compressor chamber separated on both sides of the middle partition plate, and a vent connected to the compressor chamber is opened on the shell. The compressor of the air-conditioning outdoor unit includes a compressor body and the liquid reservoir, the inlet of the liquid reservoir is the return air port of the compressor, the outlet of the liquid reservoir is connected to the inlet of the compressor body, the outlet of the compressor body is the exhaust port of the compressor, the compressor is arranged in the compressor chamber, a fan is arranged in the fan chamber, and the electric control box is arranged above the middle partition plate; the heat dissipation air duct includes an air duct inlet and an air duct outlet, the air duct inlet is located in the compressor chamber and is connected to the refrigeration air duct, and the air duct outlet is located in the fan chamber and is connected to the air inlet side of the fan.

Images