Frequency conversion electric control device, outdoor unit and heating and ventilation equipment

Abstract

The utility model relates to the technical field of air conditioner heat pumps, in particular to a variable-frequency electric control device, an outdoor unit and heating and ventilation equipment, the variable-frequency electric control device comprises a supporting plate, the supporting plate comprises a first mounting surface and a second mounting surface which are oppositely arranged, and the supporting plate is further provided with a through hole penetrating through the first mounting surface and the second mounting surface; the radiator is mounted on the first mounting surface; and the electric control board is mounted on the second mounting surface and provided with an electronic component, and the electronic component penetrates through the through hole and is in heat conduction connection with the radiator. According to the frequency conversion electric control device, the radiator and the electric control board, the supporting plate can be used as the same fixing reference, the matching precision control degree between the radiator and the electric control board can be effectively improved, the stress in the electric control board is reduced, and the flatness requirement of the electric control board is met.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning heat pumps, in particular to a variable frequency electric control device, an outdoor unit and heating and ventilation equipment. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] At present, in the industry's high-power commercial heating units, the compressor electronic control board of the variable frequency electronic control device has high assembly flatness requirements, and the electronic components on the electronic control board will generate high heat during operation, so a radiator that matches it needs to be set. Due to the heavy weight of the radiator, the electronic control board may bend under the action of gravity and its flatness cannot be guaranteed. Therefore, it is necessary to set support parts for the radiator and the electronic control board respectively. However, due to the assembly error of different support parts during assembly, the relative position of the radiator and the electronic control board after assembly is deviated. When the radiator is fitted with the variable frequency components on the electronic control board using the connector, the electronic control board will inevitably bend to compensate for the assembly error, resulting in the flatness of the electronic control board not meeting the standard. Utility Model Content

[0004] The purpose of the utility model is to at least solve the problem that the flatness of the electric control board does not meet the standard due to the assembly error of different support members. This purpose is achieved by the following methods:

[0005] The first aspect of the utility model proposes a variable frequency electric control device, which includes: a support plate, the support plate includes a first mounting surface and a second mounting surface arranged oppositely, and the support plate is also provided with a through hole that passes through the first mounting surface and the second mounting surface; a heat sink installed on the first mounting surface; an electric control board installed on the second mounting surface, the electric control board is provided with electronic components, the electronic components are passed through the through holes and are thermally connected to the heat sink.

[0006] According to the variable frequency electric control device of the utility model, a first mounting portion and a second mounting portion are formed on a support plate of an integral structure to respectively support the electric control board and the radiator, thereby avoiding assembly errors caused by using different support members to respectively support the radiator and the electric control board. Furthermore, the radiator and the electric control board can use the support plate as the same fixed reference, which can effectively improve the precision control degree of the fit between the radiator and the electric control board, thereby reducing the stress in the electric control board, and can effectively control the flatness of the electric control board after assembly within an allowable range.

[0007] In addition, the variable frequency electric control device according to the utility model may also have the following additional technical features:

[0008] In some embodiments of the present invention, the first mounting surface is provided with a first mounting portion, the second mounting surface is provided with a second mounting portion, the radiator is mounted on the first mounting portion, and the electric control board is mounted on the second mounting portion.

[0009] In some embodiments of the present invention, the first mounting portion is configured as a first mounting hole or a first supporting column; and / or the second mounting portion is configured as a second supporting column or a second mounting hole.

[0010] In some embodiments of the present invention, at least one side edge of the support plate is configured as a folded edge portion, and the folded edge portion is extended in a direction away from the heat sink.

[0011] In some embodiments of the utility model, the radiator is provided with a refrigerant channel; the variable frequency electric control device further comprises a refrigerant pipe, the refrigerant pipe is connected to the refrigerant channel, and the refrigerant pipe and the refrigerant channel together constitute a refrigerant circuit.

[0012] In some embodiments of the present invention, the radiator includes a main body and a boss portion connected to each other, the main body is connected to the support plate, the boss portion is arranged on a side of the main body away from the support plate, and the refrigerant channel is arranged on the boss portion.

[0013] According to the second aspect of the utility model, an outdoor unit is also proposed, which includes the variable frequency electric control device described in the first aspect, and the outdoor unit also includes: a shell, the shell having an upper chamber and an exhaust port connected to the upper chamber, the upper chamber is used to accommodate a heat exchanger; an electric control box, the electric control box defines an electric control cavity and an air inlet and an air outlet respectively connected to the electric control cavity, the electric control cavity is connected to the upper chamber through the air outlet, and the electric control cavity is used to accommodate the variable frequency electric control device.

[0014] In some embodiments of the utility model, the electric control box includes an electric control main shell, which defines the electric control cavity and has a front opening connected to the electric control cavity, the electric control board in the variable frequency electric control device is arranged toward the front opening, and the electric control front cover is detachably connected to the electric control main shell and covers the front opening.

[0015] In some embodiments of the utility model, the electric control box includes an electric control main shell, which defines the electric control cavity and has a rear opening connected to the electric control cavity, the heat sink in the variable frequency electric control device is arranged toward the rear opening, and the electric control rear cover is detachably connected to the electric control main shell and covers the rear opening.

[0016] In some embodiments of the utility model, the electrical control box also includes an air duct shell, which is arranged on the top of the electrical control main shell, the air duct shell defines an air flow channel, the air outlet is arranged on the air duct shell, the electrical control cavity is connected with the upper chamber through the air flow channel, the air duct shell is provided with a drainage groove connected with the air flow channel, along a first direction, the drainage groove is located on one side of the electrical control cavity, and the first direction is parallel to the horizontal direction or is arranged at an angle to the horizontal direction.

[0017] According to a third aspect of the present invention, a HVAC device is also provided, and the HVAC device includes the outdoor unit described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them:

[0019] Figure 1 It is a partial structural schematic diagram of a variable frequency electric control device according to an embodiment of the utility model;

[0020] Figure 2 This is a schematic structural diagram of a variable frequency electric control device according to an embodiment of the utility model;

[0021] Figure 3 This is a schematic structural diagram of a support plate according to an embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of an electric control box according to an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of an electric control box according to an embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of an electric control box according to an embodiment of the utility model;

[0025] Figure 7 It is a partial structural schematic diagram of an electric control box of an embodiment of the utility model;

[0026] Figure 8 Based Figure 7 Schematic diagram of the cross-sectional structure of the AA part;

[0027] Fig. 9 It is a partial structural schematic diagram of an outdoor unit according to one embodiment of the utility model.

[0028] The reference numerals in the accompanying drawings represent the following:

[0029] 100. Frequency conversion electric control device;

[0030] 10. Support plate; 11. Main body; 12. Folding edge; 13. First mounting portion; 14. Second mounting portion; 101. First mounting surface; 102. Second mounting surface; 103. Through hole;

[0031] 20. radiator; 21. main body; 22. boss; 201. refrigerant channel;

[0032] 30. Electric control board; 31. Electronic components; 311. Heat conducting surface;

[0033] 40. Refrigerant pipe;

[0034] 200, outdoor unit;

[0035] 210, housing; 2101, upper chamber; 2102, air outlet; 2103, fan;

[0036] 220, electric control box; 221, electric control main shell; 222, electric control front cover; 223, electric control rear cover; 224, air duct shell; 225, bottom plate; 2241, drain groove; 22411, water leakage port; 2201, electric control cavity; 2202, air inlet; 2203, air outlet; 2204, front opening; 2205, rear opening; 2206, air flow channel. DETAILED DESCRIPTION

[0037] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0038] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0039] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0040] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is rotated, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0041] According to the embodiment of the present utility model, please combine Figure 1 , Figure 2 and Figure 4 As shown, a variable frequency electric control device 100 is provided. The variable frequency electric control device 100 includes a support plate 10 , a heat sink 20 and an electric control board 30 .

[0042] The support plate 10 is a plate-shaped member. The support plate 10 includes a main body 11, a first mounting portion 13 and a second mounting portion 14. The first mounting portion 13 and the second mounting portion 14 are both arranged on the main body 11, wherein the first mounting portion 13 and the second mounting portion 14 can be respectively arranged on the opposite side plate surfaces of the main body 11. The support plate 10 includes a first mounting surface 101 and a second mounting surface 102 arranged oppositely. The first mounting portion 13 is provided with a first mounting surface, and the second mounting portion 14 is provided with a second mounting surface. The first mounting portion 13 is used to install the electric control board 30, and the second mounting portion 14 is used to install and support the radiator 20. In this embodiment, the second mounting portion 14 includes a plurality of support columns arranged on the main body 11. The support columns are hollow columnar structures, and the inner diameter of the support columns is provided with internal threads. The second mounting portion 14 and the main body 11 are an integrally formed structure. The electric control board 30 is parallel to the support plate 10, and the electric control board 30 is installed on the support column through a connector. The radiator 20 is installed at one end of the second mounting portion 14 away from the main body 11. The electronic component 31 is located between the electric control board 30 and the radiator 20, and the electronic component 31 is installed on the electric control board 30 and electrically connected to the wiring in the electric control board 30. The end of the electronic component 31 away from the electric control board 30 is thermally connected to the radiator 20, so that the radiator 20 is used to dissipate the heat of the electronic component 31. Thermal connection refers to a connection method in which the heat in the electronic component 31 can be transferred to the radiator 20 and dissipated through the radiator 20. In the thermal connection method, the electronic component 31 and the radiator 20 can be directly abutted and connected or indirectly connected through a thermal conductive medium. For example, in some embodiments, the electronic component 31 and the radiator 20 are directly abutted to achieve thermal connection between the electronic component 31 and the radiator 20. In other embodiments, a gap is provided between the electronic component 31 and the radiator 20, and a thermal conductive medium (such as silicone grease, etc.) is filled in the gap to achieve thermal connection between the electronic component 31 and the radiator 20.

[0043] In this embodiment, the electronic component 31 refers to a variable frequency electronic component for driving a compressor and a fan, and the variable frequency electronic component generates a lot of heat during operation and has a heat dissipation requirement.

[0044] In the present embodiment, the first mounting portion 13 and the second mounting portion 14 are formed on the support plate 10 of the integral structure to respectively support the electric control board 30 and the radiator 20, thereby avoiding assembly errors caused by using different support members to respectively support the radiator 20 and the electric control board 30. In addition, the radiator 20 and the electric control board 30 can use the support plate 10 as the same fixed reference, which can effectively improve the precision control degree of the fit between the radiator 20 and the electric control board 30, thereby reducing the stress in the electric control board 30, and effectively controlling the flatness of the electric control board 30 after assembly within an allowable range.

[0045] In some embodiments, please combine Figure 2 , Figure 3 and Figure 4 As shown, the first mounting surface 101 and the second mounting surface 102 are the two side surfaces of the support plate 10, the first mounting surface 101 and the second mounting surface 102 are parallel, and the support plate 10 is provided with a through hole 103, and the through hole 103 respectively penetrates the first mounting surface 101 and the second mounting surface 102 of the support plate 10 in a direction perpendicular to the first mounting surface 101. Among them, the first mounting portion 13 is provided on the first mounting surface 101, the second mounting portion 14 is provided on the second mounting surface 102, the radiator 20 and the electric control board 30 are respectively located on both sides of the support plate 10, and the electronic component 31 is thermally connected to the radiator 20 through the through hole 103. Specifically, the end of the electronic component 31 away from the electric control board 30 forms a heat conducting surface 311, and the heat conducting surface 311 is arranged toward the radiator 20 and abuts against the radiator 20, so that the electronic component 31 can transfer heat to the radiator 20 through the heat conducting surface 311 to achieve heat dissipation. In this embodiment, the heat conducting surface 311 is flush with the first mounting surface 101 to ensure that the heat conducting surface 311 can accurately abut against the heat sink 20 .

[0046] In this embodiment, the electronic component 31 is partially inserted into the through hole 103, so that the heat sink 20, the electronic component 31 and the electric control board 30 are prevented from overlapping with the support plate 10 in the direction perpendicular to the first mounting surface 101, so as to reduce the dimensions of the heat sink 20, the electronic component 31, the electric control board 30 and the support plate 10 in the direction perpendicular to the first mounting surface 101.

[0047] In this embodiment, Figure 2 and Figure 4 As shown, the first mounting portion 13 is a mounting hole, and the mounting hole is configured as a threaded hole. The radiator 20 is detachably mounted on the support plate 10 by connecting members such as bolts. Among them, the through hole 103 is set as a rectangular hole-shaped structure, and the radiator 20 is set as a rectangular metal plate-shaped member. Four mounting holes are set around the through hole 103. The radiator 20 is provided with four through holes 103 corresponding to the mounting holes. Four bolts pass through the through holes 103 on the radiator 20 and extend into the mounting holes, so that the radiator 20 is fixedly mounted on the support plate 10, and the radiator 20 covers the through holes 103. In this embodiment, the side of the radiator 20 facing the support plate 10 is against the first mounting surface 101, so as to improve the stability of the connection between the radiator 20 and the support plate 10.

[0048] In some embodiments, Figure 3As shown, at least one side edge of the support plate 10 is configured as a folded edge to improve the overall structural strength of the support plate 10. In this embodiment, the support plate 10 includes a plate-shaped main body 11 and a plurality of folded edge portions 12, a first mounting portion 13, a second mounting portion 14, and a through hole 103 are all provided on the main body 11, and the folded edge portion 12 is connected to the edge of the main body 11, and the folded edge portion 12 is perpendicular to the main body 11.

[0049] In some embodiments, Figure 4 and Figure 8 As shown, the variable frequency electric control device 100 also includes a refrigerant pipe 40, and the radiator 20 is provided with a refrigerant channel 201. The refrigerant pipe 40 is connected to the refrigerant channel 201 and together constitutes a refrigerant circuit, and the refrigerant is used to cool the radiator 20, thereby improving the heat dissipation efficiency of the radiator 20. In some embodiments, the refrigerant channel 201 has an inlet and an outlet, and the refrigerant pipe 40 includes a liquid inlet pipe and a liquid return pipe. The liquid inlet pipe is connected to the inlet, and the liquid return pipe is connected to the outlet, thereby forming a refrigerant circuit. In other embodiments, the refrigerant pipe 40 is arranged in the refrigerant channel 201, and the refrigerant pipe 40 is thermally connected to the inner wall of the refrigerant channel 201.

[0050] In some embodiments, Figure 4 As shown, the radiator 20 includes a main body 21 and a boss 22, the main body 21 is connected to the boss 22, the main body 21 is a rectangular plate structure, the boss 22 is arranged on a side of the main body 21 away from the support plate 10, and the coolant channel 201 is arranged on the boss 22. By arranging the boss 22 on one side of the main body 21, the overall thickness of the area of ​​the radiator 20 with the boss 22 is larger in the direction perpendicular to the first mounting surface 101, and the thickness of other parts is smaller. On the one hand, the radiator 20 has enough thickness space for arranging the coolant channel 201, and on the other hand, the overall material of the radiator 20 can be saved, and the manufacturing cost of the radiator 20 can be reduced.

[0051] In the present application, the heat sink 20 is a metal member that is easy to conduct heat, and its metal material includes but is not limited to aluminum, iron, copper, silver and other metals and their alloys.

[0052] In this embodiment, the electric control board is a PCB board, that is, a printed circuit board.

[0053] According to the embodiments of the present utility model, Fig. 9 As shown, an outdoor unit 200 is also proposed. The outdoor unit 200 includes a variable frequency electric control device 100, a housing 210 and an electric control box 220.

[0054] Specifically, the housing 210 has an upper chamber 2101 and an exhaust port 2102. The exhaust port 2102 is connected to the upper chamber 2101 and is used to install a fan 2103. The upper chamber 2101 is used to install a heat exchanger. The electric control box 220 has an electric control cavity 2201. The electric control cavity 2201 is used to accommodate the variable frequency electric control device 100. The variable frequency electric control device 100 includes an electric control board 30 and electronic components 31. The variable frequency electric control device 100 may also include a filter board, a PTC (Positive Temperature Coefficient, referred to as PTC) heating tube, a temperature sensor, a module board, an inductor, etc.

[0055] Please combine Figure 7 , Figure 8 and Fig. 9 As shown, the electric control box 220 is also provided with an air inlet 2202 and an air outlet 2203 which are connected to the electric control cavity 2201, and the air outlet 2203 is connected to the upper chamber 2101, so that when the upper chamber 2101 is in a negative pressure state, under the action of the suction force of the upper chamber 2101, the external air can flow into the electric control cavity 2201 through the air inlet 2202, and flow into the upper chamber 2101 through the electric control cavity 2201 and the air outlet 2203, thereby cooling the variable frequency electric control device 100 in the electric controller and improving its heat dissipation efficiency.

[0056] According to the outdoor unit 200 proposed in the utility model, an air inlet 2202 and an air outlet 2203 are arranged on the electric control box 220, and the electric control chamber 2201 is connected with the upper chamber 2101 through the air outlet 2203. When negative pressure is generated in the upper chamber 2101 under the driving action of the fan 2103, the external air flow can enter the electric control chamber 2201 through the air inlet 2202, and flow into the upper chamber 2101 through the electric control chamber 2201 and the air outlet 2203. Therefore, the air flow speed in the electric control chamber 2201 can be effectively increased, the heat dissipation efficiency of the electric control chamber 2201 is improved, and the heat dissipation of the variable frequency electric control device 100 is accelerated.

[0057] In some embodiments, please combine Figure 6 , Figure 7 and Figure 8 As shown, the electric control box 220 includes an electric control main shell 221 and an electric control front cover 222. The electric control main shell 221 defines an electric control cavity 2201 and has a front opening 2204 connected to the electric control cavity 2201. The electric control board 30 in the variable frequency electric control device 100 is arranged toward the front opening 2204. The electric control front cover 222 is detachably connected to the electric control main shell 221 and covers the front opening 2204, so that maintenance personnel can inspect the electric control board 30 and the electronic components 31 thereon by opening the electric control front cover 222, thereby reducing the difficulty of maintenance.

[0058] In some embodiments, please combine Figure 4 and Figure 5 As shown, the electric control main shell 221 includes a bottom plate 225, and the electric control board 30 is installed on a side surface of the bottom plate 225 facing the electric control cavity 2201. A rear opening 2205 is provided on the bottom plate 225. The electric control box 220 also includes an electric control rear cover 223, and the rear opening 2205 is communicated with the electric control cavity 2201. The radiator 20 in the variable frequency electric control device 100 is arranged toward the rear opening 2205. The electric control rear cover 223 is detachably connected to the electric control main shell 221 and covers the rear opening 2205, so that maintenance personnel can inspect the radiator 20 by opening the electric control front cover 222, thereby reducing the difficulty of maintenance.

[0059] In some embodiments, please combine Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, the electric control box 220 further includes an air duct shell 224, the electric control main shell 221 is a rectangular shell structure, the air duct shell 224 is arranged at the top of the electric control main shell 221, and the air duct shell 224 is located between the partition and the electric control main shell 221, the electric control main shell 221 is hollow inside to define the electric control cavity 2201, the air duct shell 224 defines an air flow channel 2206 inside, the air outlet 2203 is arranged at the top of the air duct shell 224 and communicates with the air flow channel 2206, and the electric control cavity 2201 is communicated with the upper chamber 2101 through the air flow channel 2206. The airflow in the electric control cavity 2201 first enters the air flow channel 2206 and flows through the air flow channel 2206, and then enters the upper chamber 2101 from the air outlet 2203. The air duct shell 224 is provided with a drainage groove 2241, and a water leakage port 22411 is provided at the bottom of the drainage groove 2241. The drainage groove 2241 is communicated with the air flow channel 2206. When the condensed water in the upper chamber 2101 drips from the air outlet 2203 to the air flow channel 2206, the condensed water can flow out of the air flow channel 2206 from the drainage groove 2241. Specifically, along the first direction, the drainage groove 2241 is located at one side of the electric control cavity 2201, so as to prevent the condensed water flowing out of the drainage groove 2241 from dripping into the electric control cavity 2201. Under the premise of improving the heat dissipation performance of the electric control box 220 by utilizing the negative pressure of the upper chamber 2101, the waterproof function of the electric control box 220 is taken into consideration, so as to prevent the condensed water in the upper chamber 2101 from flowing into the electric control cavity 2201 through the air outlet 2203. In this embodiment, the first direction is parallel to the horizontal direction, so that the drainage groove 2241 and the electric control cavity 2201 are arranged at intervals in the horizontal direction, and condensed water can drip downward to the outside of the electric control cavity 2201 through the drainage groove 2241 under the action of gravity. It can be understood that in other embodiments, the first direction is at an angle to the horizontal direction, that is, the drainage groove 2241 can be located obliquely above the electric control cavity 2201 or obliquely below the electric control cavity 2201, and the projection of the drainage groove 2241 on the horizontal plane is located outside the projection of the electric control cavity 2201 on the horizontal plane.

[0060] According to the implementation of the present invention, a HVAC device is also proposed, and the HVAC device includes an outdoor unit 200. The HVAC device proposed by the present invention includes the outdoor unit 200 of the above solution, and therefore has the same technical effect as the outdoor unit 200, which will not be described in detail here. Among them, the HVAC device includes but is not limited to a central air conditioner and an air source heat pump air conditioner.

[0061] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A variable frequency electric control device, It is characterized in that The variable frequency electric control device comprises: A support plate, the support plate comprising a first mounting surface and a second mounting surface arranged opposite to each other, and the support plate is further provided with a through hole penetrating the first mounting surface and the second mounting surface; A heat sink, mounted on the first mounting surface; An electric control board is installed on the second installation surface. The electric control board is provided with electronic components. The electronic components are passed through the through holes and are thermally connected to the heat sink.

2. The variable frequency electric control device according to claim 1, It is characterized in that The first mounting surface is provided with a first mounting portion, the second mounting surface is provided with a second mounting portion, the radiator is mounted on the first mounting portion, and the electric control board is mounted on the second mounting portion.

3. The variable frequency electric control device according to claim 2, It is characterized in that The first mounting portion is configured as a first mounting hole or a first supporting column; And / or, the second mounting portion is configured as a second supporting column or a second mounting hole.

4. The variable frequency electric control device according to claim 1, It is characterized in that At least one side edge of the support plate is configured as a folded edge portion, and the folded edge portion is extended in a direction away from the heat sink.

5. The variable frequency electric control device according to claim 1, It is characterized in that The radiator is provided with a refrigerant channel; the variable frequency electric control device also includes a refrigerant pipe, the refrigerant pipe is connected to the refrigerant channel, and the refrigerant pipe and the refrigerant channel together constitute a refrigerant circuit.

6. The variable frequency electric control device according to claim 5, It is characterized in that The radiator comprises a main body and a boss portion which are connected to each other. The main body is connected to the support plate. The boss portion is arranged on a side of the main body away from the support plate. The refrigerant channel is arranged on the boss portion.

7. An outdoor unit, It is characterized in that The outdoor unit comprises the variable frequency electric control device according to any one of claims 1 to 6, and the outdoor unit further comprises: A shell having an upper chamber and an exhaust port communicated with the upper chamber, wherein the upper chamber is used to accommodate a heat exchanger; An electric control box defines an electric control cavity and an air inlet and an air outlet respectively connected to the electric control cavity, the electric control cavity is connected to the upper chamber through the air outlet, and the electric control cavity is used to accommodate the variable frequency electric control device.

8. The outdoor unit according to claim 7, It is characterized in that The electric control box includes an electric control main shell and an electric control front cover. The electric control main shell defines the electric control cavity and has a front opening connected to the electric control cavity. The electric control board in the variable frequency electric control device is arranged toward the front opening. The electric control front cover is detachably connected to the electric control main shell and covers the front opening.

9. The outdoor unit according to claim 7, It is characterized in that The electric control box includes an electric control main shell and an electric control back cover. The electric control main shell defines the electric control cavity and has a rear opening connected to the electric control cavity. The heat sink in the variable frequency electric control device is arranged toward the rear opening. The electric control back cover is detachably connected to the electric control main shell and covers the rear opening.

10. The outdoor unit according to claim 8 or 9, It is characterized in that The electric control box also includes an air duct shell, which is arranged on the top of the electric control main shell, the air duct shell defines an air flow channel, the air outlet is arranged on the air duct shell, the electric control cavity is connected with the upper chamber through the air flow channel, and the air duct shell is provided with a drainage groove connected with the air flow channel, along a first direction, the drainage groove is located on one side of the electric control cavity, and the first direction is parallel to the horizontal direction or is arranged at an angle to the horizontal direction.

11. A heating and ventilation equipment, It is characterized in that The HVAC equipment includes the outdoor unit according to any one of claims 7 to 10.

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