Air conditioner outdoor unit and air conditioner

Abstract

This invention provides an outdoor unit and an air conditioner. The outdoor unit includes: a casing with an air outlet; an electrical control box, at least partially located within the casing; a fan, also located within the casing and positioned at the air outlet; and a heat dissipation device, located within the casing for cooling the electrical control box. The heat dissipation device is situated on one side of the fan along its axial direction, and its projection onto the fan is at least partially located within the circumferential edge of the fan. In this outdoor unit, the airflow generated when the fan rotates passes through at least a portion of the heat dissipation device, ensuring that the device is at least partially located along the airflow path generated by the fan. Therefore, under the influence of the airflow generated by the rotating fan, the heat dissipation device effectively cools the electrical control box, reducing its operating temperature.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, specifically to an outdoor unit for an air conditioner, and also to an air conditioner. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] In the outdoor unit of an air conditioner, the electrical control box is usually located inside the unit's casing. After the outdoor unit has been running for a long time, a lot of heat will accumulate on the electrical control box. Therefore, it is necessary to dissipate the heat accumulated on the electrical control box. In particular, if the electrical control box is in a high temperature state for a long time while the outdoor unit is running, it will affect the operation of the power components on the electrical control box. Summary of the Invention

[0004] The objective of this invention is to at least solve the technical problem of heat dissipation from the electrical control box of an air conditioner outdoor unit. This objective is achieved through the following technical solution:

[0005] This invention provides an outdoor unit for an air conditioner, characterized in that the outdoor unit comprises:

[0006] The chassis is equipped with an air outlet;

[0007] An electrical control box, at least a portion of which is located within the chassis;

[0008] The fan wheel is located inside the casing and at the air outlet.

[0009] A heat dissipation device is disposed inside the chassis for dissipating heat from the electrical control box. Along the axial direction of the fan wheel, the heat dissipation device is located on one side of the fan wheel, and along the axial direction of the fan wheel, the projection of the heat dissipation device onto the fan wheel is at least partially located within the circumferential edge of the fan wheel.

[0010] The outdoor unit of the air conditioner provided by the present invention has a fan and a heat dissipation device installed in the casing. The heat dissipation device is used to dissipate heat from the electrical control box. When the fan rotates, the airflow generated passes through at least a part of the heat dissipation device. By arranging the heat dissipation device on the airflow path, the heat on the heat dissipation device is carried away. Specifically, the projection of the heat dissipation device onto the fan is at least partially located within the circumferential edge of the fan, so that the heat dissipation device is at least partially located on the airflow path generated by the fan. Therefore, under the action of the airflow generated by the rotation of the fan, the heat dissipation device can achieve a good heat dissipation effect on the electrical control box and reduce the operating temperature of the electrical control box.

[0011] In addition, the outdoor unit of the air conditioner according to the present invention may also have the following additional technical features:

[0012] In some embodiments of the present invention, on a projection plane perpendicular to the axial direction, the heat dissipation device has a first projection on the projection plane, and the rotating surface of the impeller has a second projection on the projection plane. The first projection and the second projection are intersecting. Along the radial direction of the impeller, the longest distance between the first projection and the circumferential edge of the second projection is L. The diameter of the impeller is D, and L is 5% to 40% of D.

[0013] In some embodiments of the present invention, on a plane perpendicular to the direction of the axis, the shortest distance between the first projection and the axis of the wind turbine is L1, and the longest distance between the first projection and the axis of the wind turbine is L2. A first circular region is formed with a point on the axis of the wind turbine as the center and L1 as the radius, and a second circular region is formed with L2 as the radius. The area difference between the first circular region and the second circular region is S2. The wind turbine rotates around its axis to form a third circular region S1, wherein 0.005 < S2 / S1 < 0.5.

[0014] In some embodiments of the present invention, the shortest distance between the top of the heat dissipation device and the wind turbine along the axial direction of the wind turbine is L3, where L3 > D*5%.

[0015] In some embodiments of the present invention, the impeller includes an axial flow impeller, the air outlet side of the axial flow impeller faces the air outlet, and the air inlet side of the axial flow impeller faces the heat dissipation device.

[0016] In some embodiments of the present invention, the outdoor unit of the air conditioner further includes a heat exchanger, which is disposed inside the casing and located on the side of the impeller away from the air outlet.

[0017] In some embodiments of the present invention, the heat exchanger extends circumferentially along the side wall of the chassis and encloses a heat exchange channel, which is connected to the air outlet.

[0018] In some embodiments of the present invention, the air outlet is located at the top of the casing, and the outdoor unit of the air conditioner also has an air inlet located on the side wall of the casing. An airflow channel is formed between the air outlet and the air inlet, and the airflow channel is connected to the heat exchange channel.

[0019] In some embodiments of the present invention, the heat dissipation device is located on the side of the fan wheel away from the air outlet and close to the portion of the electrical control box located inside the chassis.

[0020] In some embodiments of the present invention, the electrical control box is connected to the heat dissipation device.

[0021] In some embodiments of the present invention, the outdoor unit of the air conditioner further includes a compressor assembly connected to the heat exchanger and disposed within the heat exchange channel.

[0022] A second aspect of the present invention provides an air conditioner comprising an outdoor unit as described in any of the preceding claims. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of an outdoor air conditioner unit according to an embodiment of the present invention;

[0025] Figure 2 This is a top view of an outdoor air conditioning unit on the side of the air outlet fan, according to an embodiment of the present invention, showing the projection of the heat dissipation device on the fan wheel.

[0026] Figure 3 This is a schematic diagram of the structure of an outdoor air conditioner unit according to an embodiment of the present invention, showing the positional relationship between the heat dissipation device and the fan wheel in terms of height;

[0027] Figure 4 This is a schematic diagram of the structure of an outdoor air conditioner unit according to an embodiment of the present invention, which shows a heat exchanger and a heat exchange duct;

[0028] Figure 5 This is a schematic diagram of the structure of an outdoor air conditioner unit according to an embodiment of the present invention, showing an electrical control box connected to an electrical control device;

[0029] Figure 6 This is a schematic diagram of the structure of an outdoor air conditioner unit according to an embodiment of the present invention.

[0030] The attached figures are labeled as follows:

[0031] 100. Air conditioner outdoor unit;

[0032] 110. Chassis; 111. Air outlet; 112. Air inlet; 113. Airflow channel;

[0033] 120. Axial flow fan; 121. Axis axis;

[0034] 130. Heat dissipation device; 131. Projector;

[0035] 140. Heat exchanger; 141. Heat exchange passage;

[0036] 150. Electrical control box;

[0037] 160. Compressor assembly;

[0038] C1, the first circular region; C2, the second circular region. Detailed Implementation

[0039] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0040] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0041] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0042] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0043] Combination Figures 1 to 6 The outdoor unit 100 of the air conditioner in this embodiment includes a casing 110. The casing 110 has an air outlet 111 and an air inlet 112. A fan is installed inside the casing 110 and is located at the air outlet 111. Under the action of the fan, an airflow channel is formed between the air inlet 112 and the air outlet 111 of the casing 110. The airflow formed can carry away the air inside the casing 110 and at the same time draw the air outside the casing 110 into the casing 110, so that the air inside and outside the casing 110 circulates.

[0044] The outdoor unit 100 of this embodiment also includes a heat dissipation device 130, which is disposed inside the casing 110. The heat dissipation device 130 is used to dissipate heat from the electrical control box 150. The heat dissipation device 130 is connected to the electrical control box 150. Electrical control components that control the operation of the outdoor unit 100 are arranged inside the electrical control box 150. The heat generated by the electrical control components during operation is conducted to the electrical control box 150 and the heat dissipation device 130. When the airflow inside the casing 110 passes through the heat dissipation device, the heat conducted from the electrical control components to the heat dissipation device is carried to the outside of the casing 110 by the airflow formed inside the casing 110. Thus, the heat conducted from the electrical control components to the heat dissipation device inside the electrical control box will not accumulate inside the casing. Therefore, the outdoor unit of this embodiment can promptly remove the heat conducted to the heat dissipation device, keeping the electrical control box and the electrical control components inside the electrical control box within the normal operating temperature range. Furthermore, the heat on the heat dissipation device can be promptly discharged to the outside of the casing, avoiding heat accumulation inside the casing.

[0045] In this embodiment, the outdoor unit of the air conditioner has a heat dissipation device connected to the electrical control box, so that the heat generated by the electrical control components in the electrical control box can be conducted to the heat dissipation device, and the heat on the heat dissipation device can be carried away by the airflow generated by the rotation of the fan wheel. The heat dissipation device can be configured as a device with multiple heat dissipation fins.

[0046] Alternatively, the heat dissipation device can be configured as an air guide plate structure. The heat dissipation device is located on one side of the wind turbine along the axis of the wind turbine, and the projection of the heat dissipation device onto the wind turbine is at least partially located within the circumferential edge of the wind turbine. That is, the airflow generated by the rotation of the wind turbine passes through a part of the heat dissipation device, so that the air guide plate structure can guide part of the airflow generated by the wind turbine to the electrical control box. By blowing air onto the electrical control box, the heat conducted to the electrical control box by the electrical control components is carried away.

[0047] Alternatively, the heat dissipation device can be configured as a rotatable fan structure. The airflow generated by the rotation of the impeller drives the fan in the heat dissipation device to rotate, thereby allowing the airflow generated by the fan to blow towards the electrical control box and dissipate heat from the electrical control box and the electrical control components inside the electrical control box. The projection of the rotatable fan structure onto the impeller is at least partially located within the circumferential edge of the impeller, so that the airflow can pass through the rotatable fan structure to drive the fan in the heat dissipation device to rotate.

[0048] Therefore, the heat dissipation device provided by this invention dissipates heat from the electrical control box. It can be mechanically connected to the electrical control box, conducting heat from the electrical control box and its internal electronic components to the heat dissipation device. It can also create airflow between the heat dissipation device and the electrical control box, dissipating heat by blowing air onto the electrical control box. In this invention, the heat dissipation device of the outdoor unit of the air conditioner is located on one side of the fan wheel along its axial direction, allowing the airflow generated by the fan wheel's rotation to act on the heat dissipation device. When the projection of the heat dissipation device onto the fan wheel along its axial direction is at least partially located within the circumferential edge of the fan wheel, a portion of the heat dissipation device lies within the flow path of the airflow generated by the fan wheel's rotation, allowing the airflow to directly act on the heat dissipation device. Therefore, the heat dissipation device in the outdoor unit of the air conditioner of this invention can effectively dissipate heat from the electrical control box, ensuring that the electronic components within the electrical control box are always within their normal operating temperature range.

[0049] In the outdoor unit of the air conditioner of the present invention, in order to enable the airflow inside the casing 110 to dissipate heat from the electronic control components more efficiently, the positions of the impeller and the heat dissipation device 130 are defined in the outdoor unit 100 of the air conditioner of the present invention.

[0050] In one embodiment of the present invention, the heat dissipation device 130 is disposed on the side of the impeller away from the air outlet 111 of the casing 110. Along the axis 121 of the impeller, the heat dissipation device 130 has a projection 131 on the impeller. The electrical control box and the heat dissipation device can also be disposed on the same side of the impeller. The heat dissipation device can dissipate heat to a part of the electrical control box disposed in the casing. In the outdoor unit 100 of the air conditioner in this embodiment, along the axis 121 of the impeller, a part of the heat dissipation device 130 that generates the projection 131 is located on the airflow channel. The airflow formed in the casing can directly dissipate heat to the heat dissipation device 130, which can carry away most of the heat of the heat dissipation device 130 and carry away the heat accumulated in the electrical control components in the electrical control box 150 connected to the heat dissipation device 130 in a timely manner, preventing the electrical control components from being in a high-temperature environment for a long time, which would affect the normal operation of the outdoor unit 100 of the air conditioner.

[0051] In the air conditioner outdoor unit 100 provided by the present invention, after the fan wheel is started, during the operation of the air conditioner outdoor unit 100, the fan wheel can always dissipate heat from the heat dissipation device 130 connected to the electrical control box 150, thereby improving the heat dissipation efficiency of the electrical control components in the electrical control box 150 of the air conditioner outdoor unit 100. In this embodiment, at least a portion of the heat dissipation device 130 of the air conditioner outdoor unit 100 is located on the airflow path generated by the rotation of the fan wheel, thereby enabling the heat conducted to the heat dissipation device 130 to be carried away in a timely manner.

[0052] The outdoor unit 100 of the air conditioner of the present invention can be provided with an air inlet 112 on the side wall of the casing 110 and an air outlet 111 on the top of the casing 110. In particular, when multiple side walls of the casing 110 are provided with air inlets 112, multiple areas of the circumferential side walls of the casing 110 can be used to allow air to enter the casing 110. The airflow channel inside the casing 110 has a large ventilation area. A portion of the heat dissipation device 130 connected to the electrical control box 150 is located in the airflow channel, which can efficiently dissipate heat from the electrical control components inside the electrical control box 150. The outdoor unit of the air conditioner in this embodiment adopts a top-outlet structure. When the fan is located at the air outlet position, it is beneficial to form a large airflow inside the casing.

[0053] The heat dissipation efficiency of the heat dissipation device for the electrical control box can be adjusted by adjusting the relative position of the heat dissipation device 130 connected to the electrical control box 150 and the impeller. For example, the heat dissipation device can be set at a position with a different distance from the axis of the impeller, that is, the heat dissipation device is arranged along the radial direction of the impeller, and the projection of the heat dissipation device onto the impeller along the axis of the impeller is at least partially located within the circumferential edge of the impeller. The heat dissipation efficiency for the electrical control box is determined according to the airflow velocity around the heat dissipation device. In this embodiment, after the impeller rotates, the airflow velocity in the radial direction of the impeller is different.

[0054] Furthermore, by setting the radial diameter of the impeller or the external structure of the heat dissipation device, the projection area of ​​the heat dissipation device 130 onto the impeller in the axial direction of the impeller's rotation can be different. Thus, the heat dissipation efficiency of the heat dissipation device on the electrical control box can be adjusted according to the different projection areas. The projection area can extend along the radial direction of the impeller or along the circumferential direction of the impeller. The size of the projection area directly affects the heat dissipation efficiency of the heat dissipation device, and also affects the heat dissipation effect of the electrical control box 150 and the electrical control components inside the electrical control box.

[0055] During the specific layout of the outdoor unit, technicians can adjust the positional relationship between the heat dissipation device 130 and the fan wheel according to the power of the outdoor unit 100 and the volume of the casing 110, so as to form an outdoor unit with different heat dissipation efficiencies for the electrical control box and the electrical control components inside the electrical control box.

[0056] In one embodiment of the present invention, such as Figure 2 As shown, on a projection plane perpendicular to the axis 121 of the impeller, the heat dissipation device has a first projection on the projection plane, and the rotating surface of the impeller has a second projection on the projection plane. The first projection and the second projection overlap in at least a partial area. In the radial direction of the impeller, the longest distance between the first projection and the circumferential edge of the second projection is L, and the radial diameter of the impeller is D. The longest distance L can be set to any value between 5% and 40% of the radial diameter D of the impeller. In this embodiment, the overlapping area of ​​the first projection and the second projection is located near the circumferential edge of the second projection. By setting the projection relationship between the heat dissipation device and the impeller, the effective heat dissipation area of ​​the airflow generated by the rotation of the impeller on the heat dissipation device is determined. The above-mentioned ratio range given in this embodiment is determined in combination with the heat exchanger assembly and compressor assembly in the casing of the outdoor unit of the air conditioner and the limited volume of the casing. Within the above-mentioned ratio range, while ensuring effective heat dissipation of the electrical control box, the heat exchange efficiency of the outdoor unit of the air conditioner is greatly improved.

[0057] like Figure 1 As shown, the heat dissipation device 130 can be installed in the chassis 110 along the height direction. Inside the chassis, the height direction of the heat dissipation device is roughly the same as the airflow direction, so that the heat dissipation device occupies a longer heat dissipation path in the airflow path formed between the air inlet and air outlet of the chassis 110, effectively improving the heat dissipation efficiency.

[0058] It should be noted that in the outdoor unit 100 of the air conditioner of the present invention, when the heat dissipation device is connected to the electrical control box, the heat dissipation device 130 and the electrical control box 150 can be set as an integral structure. The heat dissipation device 130 is set inside the casing 110, and a part of the electrical control box 150 is set outside the casing 110 for connecting power lines or setting control elements. A part of the electrical control box 150 is set inside the casing 110 for heat dissipation in the airflow channel.

[0059] The heat dissipation device 130 connected to the electrical control box 150 can also be located entirely within the airflow path or airflow channel of the chassis 110. This arrangement can be made according to the structural characteristics of the heat dissipation device 130. For example, the structure of the heat dissipation channel of the heat dissipation device 130 or the effective heat dissipation area of ​​the heat dissipation device can also be improved by increasing the length of the heat dissipation device on the airflow path within the chassis 110.

[0060] In the above embodiments of the present invention, the heat dissipation efficiency of the outdoor unit 100 to the electrical control box 150 is arranged according to the projected area of ​​the heat dissipation device 130 on the impeller. In particular, when the heat dissipation device 130 is arranged along the side wall of the casing 110 in the height direction, the accommodating space inside the casing 110 can be increased, allowing the outdoor unit 100 to arrange more components inside the casing 110, such as the heat exchanger 140 assembly or compressor, liquid receiver, electronic expansion valve, pipelines, fixing devices, etc.

[0061] In one embodiment of the present invention, on a projection plane perpendicular to the axis of the wind turbine, the heat dissipation device has a first projection on the projection plane. The shortest distance between the first projection and the axis of the wind turbine is L1, and the longest distance between the first projection and the axis of the wind turbine is L2. A first circular region is formed with a point on the axis of the wind turbine as the center and L1 as the radius, and a second circular region is formed with L2 as the radius. The area difference between the first and second circular regions is S2. The wind turbine rotates around its axis to form a third circular region S1, wherein 0.005 < S2 / S1 < 0.5. In this embodiment, the heat dissipation area of ​​the heat dissipation device 130 by the airflow generated by the rotation of the wind turbine is set according to the ratio of the area formed by the rotation of the wind turbine around the axis 121 to the area of ​​the projection 131 of the heat dissipation device 130 on that area. Figure 2 As shown, the area formed by the wind turbine around its axis 121 is S1, which is the third circular area S1. The area formed by the projection 131 of the heat dissipation device 130 on the wind turbine rotating around the axis 121 of the wind turbine is S2. The area S2 is explained as follows: In a plane perpendicular to the axis 121 of the wind turbine, the shortest distance between the projection 131 of the heat dissipation device 130 on the wind turbine along the direction of the axis 121 and the axis 121 is L1. The longest distance between the projection 131 and the axis 121 of the wind turbine is L2. With a point on the axis 121 as the center and L1 as the radius, a first circular area C1 is formed, and a second circular area C2 is formed with L2 as the radius. The area difference between the first circular area C1 and the second circular area C2 is S2.

[0062] In this embodiment, considering that the airflow acting on the heat dissipation device is formed by the circumferential rotation of the impeller, the airflow generated by the circumferential annular area is an important indicator affecting the heat dissipation of the control box by the heat dissipation device. Therefore, the projection of the heat dissipation device onto the impeller along the axial direction of the impeller, and the annular area formed by the rotation of this projection along the axis of the impeller, and the airflow formed by the impeller in the above-mentioned annular area directly act on the heat dissipation device. Therefore, the above-mentioned proportional area given in this embodiment can also form a good heat dissipation environment for the control box under the condition that the outdoor unit of the air conditioner has a high heat exchange efficiency.

[0063] To improve the heat dissipation efficiency of the electrical control box 150, a portion of the heat dissipation device 130 can be extended along the rotation direction of the impeller, thereby appropriately increasing the heat dissipation area and the projection area 131 of the heat dissipation device 130 on the impeller. The advantage of this arrangement is that the heat dissipation device 130 can be arranged along the side wall of the chassis 110 without occupying the effective storage space inside the chassis 110. That is, the heat dissipation area of ​​the heat dissipation device 130 is not increased in the direction perpendicular to the axis 121 of the impeller, and the heat dissipation area of ​​the heat dissipation device 130 is appropriately increased along the rotation direction of the impeller.

[0064] In one embodiment of the present invention, such as Figure 3 As shown, the heat dissipation device 130 is arranged inside the chassis 110. The shortest distance between the top of the heat dissipation device 130 and the impeller is L3. By appropriately increasing the shortest distance L3, the airflow generated by the rotation of the impeller around the axis 121 can carry away the heat conducted to the heat dissipation device 130, preventing the heat dissipation device 130 from being too close to the impeller and the airflow between the impeller and the heat dissipation device 130 from not flowing. Specifically, the shortest distance L3 is greater than 5% of the radial diameter D of the impeller.

[0065] In this embodiment, the outdoor unit 100 of the air conditioner has a heat dissipation device 130 that can be arranged opposite to part of the air inlet 112 of the casing 110. When the outside air enters the casing 110 through the air inlet 112, it first blows towards the heat dissipation device 130, and then, under the action of the fan wheel, the airflow flows towards the air outlet 111 of the casing 110.

[0066] In the outdoor unit 100 of the air conditioner of the present invention, the impeller inside the casing 110 can be configured as an axial flow impeller 120. The air outlet side of the axial flow impeller 120 faces the air outlet 111 of the casing 110, and the air inlet side of the axial flow impeller 120 is spaced apart from the heat dissipation device 130. The axial flow impeller 120 is provided with at least one fan blade, which rotates around the axis 121 of the axial flow impeller 120, so that the air at the air inlet 112 of the casing 110 flows to the air outlet 111 of the casing 110. The size and rotation speed of the axial flow impeller 120 can be set according to the ventilation requirements of the casing 110. In the outdoor unit 100 of the air conditioner of the present invention, the projection 131 of the axial flow impeller 120 and the heat dissipation device 130 on the axis 121 of the impeller is configured to interfere, so that the airflow generated by the rotation of the impeller passes through a part of the heat dissipation device 130 and dissipates heat on the electrical control components in the electrical control box 150 connected to the heat dissipation device 130.

[0067] In the outdoor unit 100 of the air conditioner of the present invention, the heat dissipation device 130 and the axial flow fan 120 are sequentially arranged between the air inlet 112 and the air outlet 111 of the casing 110. Under the action of the axial flow fan 120, the airflow formed between the air inlet 112 and the air outlet 111 of the casing 110 can pass through a part of the area of ​​the heat dissipation device 130.

[0068] In one embodiment of the present invention, the outdoor unit 100 of the air conditioner further includes a heat exchanger 140, which is disposed inside the casing 110. The heat exchanger 140 is located near the air inlet 112 of the casing 110 and arranged on the side of the fan wheel away from the air outlet 111 of the casing 110. Thus, the air outside the casing 110 can exchange heat with the heat exchanger 140 after passing through the air inlet 112. The cold medium in the heat exchanger 140 exchanges heat with the airflow. Under the action of the fan wheel, the air after heat exchange with the heat exchanger 140 flows to the air outlet 111 of the casing 110.

[0069] The heat exchanger 140 includes multiple refrigerant pipes for circulating refrigerant. The wall of the heat exchanger 140 formed by the multiple refrigerant pipes can be arranged along the side wall of the casing 110, or it can be arranged opposite to the air inlet 112 on the side wall of the casing 110.

[0070] At least a compressor assembly 160 and an expansion valve are arranged inside the casing 110 of the outdoor unit 100 of the air conditioner. A circulation loop of the refrigerant is formed between the heat exchanger 140 and the expansion valve. The airflow formed between the air inlet 112 and the air outlet 111 of the casing 110 exchanges heat with the heat exchanger 140, so that the outdoor unit 100 of the air conditioner achieves the purpose of cooling or heating.

[0071] It should be noted that when the outdoor unit 100 of the present invention is applied to an air conditioner or air conditioning system, it is connected to the indoor unit of the air conditioner or air conditioning system. The refrigerant forms a loop in the heat exchanger 140 in the outdoor unit 100 and the indoor unit. Specifically, a condenser can be installed in the outdoor unit 100 and an evaporator can be installed in the indoor unit. The refrigerant forms a circulating loop in the condenser and the evaporator. An expansion valve, a switching valve, and a gas-liquid separator can also be installed in the circulating loop. In the outdoor unit 100, the refrigerant in the heat exchanger 140 completes heat exchange in the airflow path between the air inlet 112 and the air outlet 111 of the casing 110.

[0072] Combination Figure 4 and Figure 5 To increase the heat exchange area, heat exchangers 140 can be arranged on multiple side walls of the chassis 110, and these heat exchangers 140 can be interconnected. Air inlets 112 can be arranged on the multiple side walls of the chassis 110 where the heat exchangers 140 are arranged, thereby increasing the contact area between the heat exchangers 140 and the airflow. Alternatively, one heat exchanger 140 can be configured as a G-type and arranged along the side wall inside the chassis 110.

[0073] In one embodiment of the present invention, the heat exchanger 140 of the outdoor unit 100 of the air conditioner extends circumferentially along the side wall of the casing 110 and encloses to form a heat exchange channel 141. The heat exchange channel 141 is connected to the air inlet 112 provided on the side wall of the casing 110. The compressor and liquid storage tank and other components are arranged in the heat exchange channel 141 formed by the heat exchanger 140. The electrical control box 150 and the heat dissipation device 130 connected to the electrical control box 150 can be arranged inside the heat exchange channel 141 or the heat dissipation device 130 can be arranged inside the heat exchange channel 141. A part of the electrical control box 150 is arranged outside the heat exchange channel 141 to provide a panel for setting the electrical control operation elements. The heat exchange channel 141 is connected to the airflow channel 113 formed between the air inlet 112 and the air outlet 111 of the casing 110.

[0074] In one embodiment of the present invention, the heat exchanger 140 of the outdoor unit 100 of the air conditioner extends circumferentially along the side wall of the casing 110, and together with the electrical control box 150, forms a heat exchange channel 141. The compressor assembly 160, expansion valve and control valve and other components are arranged in the heat exchange channel 141. The heat exchange channel 141 is connected to the airflow channel 113 formed between the air inlet 112 and the air outlet 111 of the casing 110.

[0075] In one embodiment of the present invention, the outdoor unit of the air conditioner further includes an electrical control box, at least part of which is located inside the chassis and connected to a heat dissipation device; the outdoor unit of the air conditioner also includes a compressor assembly, which is connected to a heat exchanger to form a refrigerant circulation channel, and the compressor assembly is located within the heat exchange channel.

[0076] The present invention also provides an air conditioner, combined with Figure 6 The air conditioner includes the outdoor unit 100 of any of the above embodiments. The air conditioner also includes a compressor and a liquid receiver connected to the compressor. The compressor and the liquid receiver can be installed in the casing 110 of the outdoor unit 100. The compressor is used to compress the refrigerant. The compressed refrigerant flows in the heat exchanger 140. Under the action of the fan wheel in the outdoor unit 100, the heat generated in the heat exchanger 140 is cooled by the airflow in the airflow channel 113. The heat is carried to the outside of the outdoor unit 100 by the airflow.

[0077] The air conditioner of the present invention also includes an indoor unit, in which a heat exchanger 140 or an evaporator is disposed and connected to the heat exchanger 140 in the outdoor unit 100. This allows the refrigerant in the heat exchanger 140 of the outdoor unit 100 to circulate to the heat exchanger 140 or evaporator of the indoor unit, exchanging heat with the indoor air and maintaining the indoor temperature within a reasonable range. Specifically, in cooling mode, the heat exchanger 140 in the outdoor unit 100 acts as a heat exchanger for heat dissipation, while the heat exchanger in the indoor unit acts as a heat exchanger for heat absorption; in heating mode, the heat exchanger 140 in the indoor unit acts as a heat exchanger for heat dissipation, while the heat exchanger in the outdoor unit 100 acts as a heat exchanger for heat absorption.

[0078] The air conditioner provided by the present invention, and the outdoor unit 100 of the air conditioner, can dissipate heat from the heat dissipation device 130 connected to the electrical control box 150 during the cooling or heating process because the fan wheel can dissipate heat during the rotation process. This ensures that the electrical control components in the electrical control box 150 are within a reasonable temperature range and will not affect the normal operation of the air conditioner due to excessive temperature.

[0079] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An outdoor unit for an air conditioner, characterized in that, The outdoor unit of the air conditioner includes: The chassis is equipped with an air outlet; An electrical control box, at least a portion of which is located within the chassis; The fan wheel is located inside the casing and at the air outlet. A heat dissipation device is disposed inside the chassis for dissipating heat from the electrical control box. Along the axial direction of the fan wheel, the heat dissipation device is located on one side of the fan wheel, and the projection of the heat dissipation device onto the fan wheel is at least partially located within the circumferential edge of the fan wheel. On a projection plane perpendicular to the axial direction, the heat dissipation device has a first projection on the projection plane, and the rotating surface of the wind turbine has a second projection on the projection plane. The first projection and the second projection are intersecting. Along the radial direction of the wind turbine, the longest distance between the first projection and the circumferential edge of the second projection is L. The diameter of the wind turbine is D, and L is 5% to 40% of D.

2. The outdoor unit of the air conditioner according to claim 1, characterized in that, On a plane perpendicular to the axis, the shortest distance between the first projection and the axis of the wind turbine is L1, and the longest distance between the first projection and the axis of the wind turbine is L2. A first circular region is formed with a point on the axis of the wind turbine as the center and L1 as the radius, and a second circular region is formed with L2 as the radius. The area difference between the first circular region and the second circular region is S2. The wind turbine rotates around its axis to form a third circular region S1, where 0.005 < S2 / S1 < 0.

5.

3. The outdoor unit of the air conditioner according to claim 1, characterized in that, Along the axial direction of the fan wheel, the shortest distance between the top of the heat dissipation device and the fan wheel is L3, where L3 > D*5%.

4. The outdoor unit of the air conditioner according to claim 1, characterized in that, The impeller includes an axial flow impeller, with the air outlet side of the axial flow impeller facing the air outlet and the air inlet side of the axial flow impeller facing the heat dissipation device.

5. The outdoor unit of the air conditioner according to any one of claims 1-4, characterized in that, The outdoor unit of the air conditioner also includes a heat exchanger, which is located inside the casing and on the side of the fan wheel away from the air outlet.

6. The outdoor unit of the air conditioner according to claim 5, characterized in that, The heat exchanger extends circumferentially along the side wall of the chassis and forms a heat exchange channel, which is connected to the air outlet.

7. The outdoor unit of the air conditioner according to claim 6, characterized in that, The air outlet is located at the top of the casing, and the outdoor unit of the air conditioner also has an air inlet located on the side wall of the casing. An airflow channel is formed between the air outlet and the air inlet, and the airflow channel is connected to the heat exchange channel.

8. The outdoor unit of the air conditioner according to claim 5, characterized in that, The heat dissipation device is located on the side of the fan wheel away from the air outlet, and is close to the part of the electrical control box located inside the chassis.

9. The outdoor unit of the air conditioner according to claim 8, characterized in that, The electrical control box is connected to the heat dissipation device.

10. The outdoor unit of the air conditioner according to claim 6, characterized in that, The outdoor unit of the air conditioner also includes a compressor assembly, which is connected to the heat exchanger and is located within the heat exchange channel.

11. An air conditioner, characterized in that, The air conditioner includes the outdoor unit of the air conditioner as described in any one of claims 1-10.

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