Electric control box, outdoor unit and heating and ventilation equipment

Abstract

The utility model relates to the technical field of air conditioner heat pumps, in particular to an electric control box, an outdoor unit and heating and ventilation equipment, the electric control box comprises an electric control main shell, the electric control main shell defines an electric control cavity, and the electric control cavity comprises a first area and a second area which are communicated; the first electric control assembly is arranged in the first area; the second electric control assembly is arranged in the second area, and the heating value of the first electric control assembly is larger than that of the first electric control assembly; the fan is arranged in the electric control cavity and used for driving at least part of air in the first area to flow to the second area. According to the electric control box provided by the utility model, the fan is utilized to drive the air in the electric control cavity to flow, so that the air with higher temperature in the first area is driven into the second area, thereby improving the environment temperature of the second electric control assembly and reducing the influence on the performance and reliability of the second electric control assembly in a low-temperature environment.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning heat pumps, in particular to an electric control box, 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] In low temperature environments, such as the cold climate environment in northern winter, the electrical performance of electronic components is greatly reduced. For example, the conductivity, insulation ability, thermal stability, material strength and toughness of electronic components such as integrated circuits, capacitors, diodes and field effect transistors will deteriorate in low temperature environments.

[0004] The outdoor unit of the existing air source heat pump air conditioner is generally installed outdoors. In low temperature environments such as winter, for some electronic components in the electrical control box that generate low heat, the heat generated by themselves is not enough to offset the impact of the low temperature environment. The low temperature environment seriously affects their own performance and reliability. Utility Model Content

[0005] The purpose of the utility model is to at least solve the problem that low temperature environment seriously affects the performance and reliability of electronic components. This purpose is achieved by the following methods:

[0006] The first aspect of the utility model proposes an electric control box, which includes: an electric control main shell, which defines an electric control cavity, and the electric control cavity includes a first area and a second area that are connected to each other; a first electric control component, which is arranged in the first area; a second electric control component, which is arranged in the second area, and the heat generated by the first electric control component is greater than the heat generated by the first electric control component; a fan, which is arranged in the electric control cavity, and is used to drive at least part of the air in the first area to flow to the second area.

[0007] According to the electric control box of the utility model, during the operation of the electric control box, since the heat generated by the first electric control component is greater than the heat generated by the second electric control component, the air temperature in the first area is higher than the air temperature in the second area. By arranging a fan in the electric control box and using the fan to drive the air flow in the electric control cavity, the air with higher temperature in the first area is driven into the second area, thereby increasing the ambient temperature of the second electric control component and reducing the impact on the performance and reliability of the second electric control component in a low temperature environment.

[0008] In addition, the electric control box according to the utility model may also have the following additional technical features:

[0009] In some embodiments of the present invention, the first area and the second area are arranged sequentially along a first direction, the air inlet direction and the air outlet direction of the fan are consistent, and the air outlet direction of the fan is parallel to or at an angle to the first direction.

[0010] In some embodiments of the present invention, the first electric control component includes an inductor and a frequency conversion module spaced apart along a second direction, the second direction is perpendicular to the first direction, and along the first direction, the fan is disposed between the inductor and the second electric control component.

[0011] In some embodiments of the present invention, the second electronic control component includes a main board, the air inlet side of the fan is arranged toward the reactor, and the air outlet side of the fan is arranged toward the main board; and / or, the fan is arranged at one end of the electronic control cavity along the second direction, and along the first direction, the fan corresponds to the reactor.

[0012] In some embodiments of the present invention, the electrical control box also includes a partition assembly, which is arranged in the second area and connected to the electrical control main shell, the partition assembly divides the second area into a first space and a second space, and the second electrical control assembly is arranged in the first space; the electrical control box also includes a power terminal socket, which is arranged in the second space.

[0013] In some embodiments of the utility model, the electrical control main shell includes a connected bottom plate and side plates, and the first direction and the second direction are respectively parallel to the bottom plate; the electrical control box also includes a safety baffle, which is rotatably or detachably connected to the partition assembly, and the safety baffle is arranged parallel to and at intervals with the bottom plate, and at least part of the power terminal block is arranged between the safety baffle and the bottom plate.

[0014] In some embodiments of the present invention, the electric control box further includes an electric heating element, and the electric heating element is arranged on the air inlet side or the air outlet side of the fan.

[0015] In some embodiments of the present utility model, the electric control box further comprises: a temperature sensor, which is arranged in the electric control cavity; and a control device, which is electrically connected to the electric heating element, the temperature sensor and the fan respectively.

[0016] In some embodiments of the utility model, the electronic control chamber has an air inlet and an air outlet arranged relatively to each other along the second direction; the electronic control box also includes a first air valve and a second air valve, the first air valve is arranged at the air inlet and is used to open or close the air inlet, and the second air valve is arranged at the air outlet and is used to open or close the air outlet.

[0017] According to the second aspect of the utility model, an outdoor unit is also proposed, the outdoor unit includes an electrical control box described in any one of the technical solutions of the first aspect, the outdoor unit also includes: a shell, the shell has an upper chamber and an exhaust port connected to the upper chamber, the upper chamber is used to accommodate a heat exchanger, and the electrical control chamber in the electrical control box is connected to the upper chamber.

[0018] 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

[0019] By reading the detailed description of the preferred embodiments 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 embodiments 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:

[0020] Figure 1 This is a schematic diagram of the structure of an electric control box according to an embodiment of the utility model;

[0021] Figure 2 It is a partial structural schematic diagram of an electric control box of an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the electric control main housing and the partition assembly according to one embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of an electric control box according to an embodiment of the utility model;

[0024] Figure 5 This is a structural schematic diagram of an electric control main housing according to an embodiment of the utility model;

[0025] Figure 6 The figure is a schematic structural diagram of an outdoor unit according to an embodiment of the present utility model.

[0026] The reference numerals in the accompanying drawings represent the following:

[0027] 100. Electric control box;

[0028] 20. Electric control main housing; 21. Bottom plate; 22. Side plate; 23. Electric control front cover; 24. Electric control cavity; 241. First area; 242. Second area; 2421. First space; 2422. Second space;

[0029] 30. first electric control component; 31. reactor; 32. frequency conversion module; 321. module board; 322. frequency conversion module;

[0030] 40. Second electronic control component; 41. Main board; 42. Filter board; 43. Expansion board;

[0031] 50. Fan;

[0032] 60. baffle assembly; 61. support plate; 611. connection portion; 612. support portion; 62. support baffle;

[0033] 70. Power connection socket;

[0034] 80. Safety baffle;

[0035] 91. Electric heating element; 92. Temperature sensor;

[0036] 101. air inlet; 102. air outlet;

[0037] 200, outdoor unit;

[0038] 210, housing; 220, upper chamber; 230, air outlet; 240, fan; 250, heat exchanger;

[0039] X-first direction; Y-second direction. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] According to the embodiments of the present utility model, Figure 1 As shown, an electric control box 100 is proposed, the electric control box 100 includes an electric control main shell 20, a first electric control component 30, a second electric control component 40 and a fan 50. The electric control main shell 20 is hollow inside to define an electric control cavity 24. The first electric control component 30, the second electric control component 40 and the fan 50 are all arranged in the electric control cavity 24. Specifically, along the first direction, the electric control cavity 24 includes a first area 241 and a second area 242 arranged in sequence. The first area 241 is adjacent to and communicates with the second area 242. The first electric control component 30 is arranged in the first area 241, and the second electric control component 40 is arranged in the second area 242. Along the first direction, the fan 50 is arranged between the first electric control component 30 and the second electric control component 40. In the process of the electric control box 100 working, the heat generated by the first electric control component 30 is greater than the heat generated by the second electric control component 40, so that the air temperature around the first electric control component 30 is higher than the air temperature around the second electric control component 40. In cold and low-temperature environments such as winter, the fan 50 is turned on to drive the air circulation in the electric control chamber 24, so that the air in the first area 241 flows into the second area 242 to increase the air temperature of the second area 242, thereby increasing the ambient temperature of the second electric control component 40 and reducing the impact of the low-temperature environment on the performance and reliability of the second electric control component 40.

[0045] It can be understood that the fan 50 is arranged in the electric control chamber 24, and its setting position can be adjusted according to needs. During the operation of the fan 50, the air in the electric control chamber 24 circulates, and the air in the first area 241 and the air in the second area 242 circulate alternately, thereby utilizing the heat dissipated by the first electric control component 30 in the first area 241 to increase the ambient temperature of the second electric control component 40.

[0046] Among them, the first electronic control component 30 is an electronic component with higher heat generation, such as an inductor 31, an inverter, etc., and the first electronic control component 30 is an electronic component with lower heat generation, such as a filter board 42, a main board 41, an expansion board 43, etc. relative to the first electronic control component 30.

[0047] In some embodiments, please combine Figure 1 and Figure 2 As shown, the first area 241 and the second area 242 are sequentially arranged along the first direction, the fan 50 is an axial flow fan 50, and the airflow direction of the fan 50 is parallel to the rotation axis of the fan 50 when the fan 50 is running, and the air inlet direction and the air outlet direction of the fan 50 are both parallel to the rotation axis of the fan 50. In this embodiment, the air inlet direction and the air outlet direction of the fan 50 are parallel to the first direction, so that the airflow direction driven by the fan 50 is parallel to the first direction, so that the air in the first area 241 and the air in the second area 242 flow alternately and circulate. It can be understood that the air outlet direction and the air inlet direction of the fan 50 can also be set to be set at an angle with the first direction.

[0048] In some embodiments, please combine Figure 1 , Figure 2 As shown, the first electric control component 30 includes a reactor 31 and a frequency conversion module 32 arranged at intervals along the second direction, the second direction is perpendicular to the first direction, and along the first direction, the fan 50 is arranged on one side of the reactor 31 and is located between the reactor 31 and the second electric control component 40. In this embodiment, the heat generation of the reactor 31 is relatively high, and the fan 50 is arranged on one side of the reactor 31, so that the airflow direction driven by the fan 50 is opposite to the reactor 31, so that the air in the electric control cavity 24 is preferentially exchanged with the reactor 31, and the heat in the reactor 31 is diffused to other areas of the electric control cavity 24 by using the circulating airflow. Since the fan 50 is arranged between the reactor 31 and the second electric control component 40, it is convenient to quickly realize the exchange between the air around the second electric control component 40 and the air in the first area 241.

[0049] In some embodiments, please combine Figure 1 and Figure 2As shown, when the air inlet side of the fan 50 is toward the second electric control component 40 and the air outlet side of the fan 50 is toward the reactor 31, under the driving action of the fan 50, the lower temperature air around the second electric control component 40 first flows to the reactor 31 to exchange heat with the reactor 31 and heat up, while the higher temperature air around the reactor 31 circulates to the second area 242 under the driving action of the fan 50, thereby increasing the air temperature of the second area 242 and achieving the purpose of increasing the ambient temperature of the second electric control component 40.

[0050] In other embodiments, Figure 1 As shown, the second electric control component 40 includes a main board 41, the air inlet side of the fan 50 is arranged toward the inductor 31, and the air outlet side of the fan 50 is arranged toward the main board 41. Under the driving action of the fan 50, the higher temperature air around the inductor 31 flows toward the main board 41 under the driving action of the fan 50, thereby increasing the air temperature around the main board 41, and the lower temperature air around the second electric control component 40 circulates to the first area 241 and exchanges heat with the frequency conversion module 32 and the inductor 31 in the first area 241 to increase the temperature.

[0051] In this embodiment, the frequency conversion module 32 includes a module board 321 and a frequency conversion module 322. The frequency conversion module 322 includes an IGBT module. The module board 321 is a PCB board. The IGBT module is integrated on the module board 321. IGBT (Insulated Gate Bipolar Transistor) is an insulated gate bipolar transistor, which is a composite fully controlled voltage-driven power semiconductor device composed of a (Bipolar Junction Transistor, BJT) bipolar transistor and an insulated gate field effect transistor (Metal Oxide Semiconductor, MOS). The IGBT module is a modular semiconductor product formed by packaging an IGBT (insulated gate bipolar transistor chip) and a FWD (freewheeling diode chip) through a specific circuit bridge; the packaged IGBT module is directly used in equipment such as frequency converters.

[0052] In this embodiment, Figure 1 and Figure 2 As shown, the frequency conversion module 32 includes a compressor module board 321 and a fan 50 module board 321, and the compressor module board 321 and the fan 240 module board 321 are both integrated with IGBT modules for respectively controlling the variable frequency operation of the compressor and the variable frequency operation of the fan 240. The number of the reactors 31 is set to two, and the two reactors 31 are respectively arranged opposite to the compressor module board 321 and the fan 240 module board 321 along the second direction.

[0053] In this embodiment, the fan is arranged at one end of the electric control cavity along the second direction, and along the first direction, the fan corresponds to the reactor. When the electric control box 100 is placed vertically, the reactor 31 and the fan 50 are arranged at the top position of the electric control cavity 24, and the reactor and the fan are arranged at the same height. The frequency conversion module 32 is arranged below the reactor 31 and the fan 50, and the electronic components such as the filter board and the main board are not higher than the fan, so as to facilitate the fan to more efficiently drive the air around the reactor to the second area.

[0054] In some embodiments, Figure 2 and Figure 3 As shown, the electric control main shell 20 includes a connected bottom plate 21, side plates 22 and an electric control front cover 23, and the bottom plate 21, the side plates 22 and the electric control front cover 23 together enclose an electric control cavity 24, wherein the bottom plate 21 and the side plates 22 are formed by bending a plate-like member as a whole, and the side plates 22 are formed by bending the two side plates 22 opposite to the bottom plate 21 toward one side, and a front opening connected to the electric control cavity 24 is formed between the two oppositely arranged side plates 22, and the electric control front cover 23 is detachably connected to the side plates 22 and covers the front opening. By setting a detachable electric control front cover 23, maintenance personnel can open the electric control front cover 23 to inspect the first electric control component 30 and the second electric control component 40 and the electronic components thereon, thereby reducing the difficulty of maintenance.

[0055] In this embodiment, please combine Figure 1 , Figure 2 and Figure 3 As shown, the first direction and the second direction are parallel to the bottom plate 21 respectively, the electric control box 100 also includes a partition assembly 60, the partition assembly 60 includes a support plate 61 and a support partition 62, the support plate 61 includes a vertical and connected connecting portion 611 and a supporting portion 612, the connecting portion 611 is connected to the bottom plate 21, the support partition 62 is connected to the end of the supporting portion 612 away from the bottom plate 21, the support partition 62 is parallel to the bottom plate 21 and is arranged at intervals, the partition assembly 60 is arranged in the second area 242, and the support plate 61 and the support partition 62 jointly separate the second area 242 into a first space 2421 and a second space 2422, the second electric control component 40 is arranged in the first space 2421, the electric control box 100 also includes a power supply terminal block 70, the power supply terminal block 70 is arranged in the second space 2422, and the second space 2422 is used to provide a wiring space for the power supply terminal block 70 to facilitate wiring operations.

[0056] In some embodiments, Figure 2 and Figure 3As shown, the electric control box 100 also includes a safety baffle 80, one end of which is rotatably connected to the end of the support portion 612 away from the bottom plate 21 through bolts and other connecting parts. The safety baffle 80 is arranged parallel to and spaced apart from the bottom plate 21, and at least part of the power terminal block 70 is arranged between the safety baffle 80 and the bottom plate 21. When wiring, the safety baffle 80 can be rotated to stagger the safety baffle 80 and the power terminal block 70 to provide an operating space for maintenance personnel. When the wiring operation is completed, the safety baffle 80 is restored to its original position, and the safety baffle 80 is used to shield the power wiring block to prevent the power line on the power wiring block from interfering with the second electric control component 40 such as the main board 41 located on the support partition 62.

[0057] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the second electronic control component 40 includes a main board 41, a first filter board 42, a second filter board 42 and an expansion board 43, wherein the first filter board 42 and the second filter board 42 are installed at intervals on the connecting portion 611 of the support plate 61 along the second direction, the main board 41 is installed on a side of the support partition 62 away from the bottom plate 21, and the filter board 42 is located between the main board 41 and the first electronic control component 30.

[0058] In some embodiments, please combine Figure 1 and Figure 2 As shown, the electric control box 100 also includes an electric heating element 91, which is arranged on the air inlet side or the air outlet side of the fan 50. In a low temperature and cold environment, the electric heating element 91 is started to generate heat to heat the air in the electric control chamber 24, and the fan 50 is used to diffuse the heat generated by the electric heating element 91 to the surrounding side of the second electric control component 40 through the airflow, thereby increasing the ambient temperature of the second electric control component 40 and the first electric control component 30.

[0059] In this embodiment, the electric heating element 91 includes but is not limited to a PTC (Positive Temperature Coefficient) heating tube, a heating wire, and an electric heating cable.

[0060] In some embodiments, Figure 1As shown, the electric control box 100 further includes a temperature sensor 92 and a control device. The control device is electrically connected to the temperature sensor 92, the electric heating element 91 and the fan 50 respectively. The temperature sensor 92 is used to control the air temperature in the electric control cavity 24, and transmits the air temperature to the control device in the form of an electrical signal. When the air temperature in the electric control cavity 24 drops to a critical value, the control device controls the fan 50 and / or the electric heating element 91 to turn on according to the air temperature data, at least increasing the temperature of the air in the second area 242, and increasing the ambient temperature of the second electric control component 40. In this embodiment, the control device includes a memory, a processor, and a control program stored in the memory and executable on the processor. When the control program is executed by the processor, the fan and the electric heating element can be controlled.

[0061] In some embodiments, please combine Figure 1 , Figure 4 and Figure 5 As shown, the electric control chamber 24 has an air inlet 101 and an air outlet 102 arranged relatively along the second direction. In a hot environment such as summer, since the first electric control component 30 generates a high amount of heat, it is necessary to dissipate heat from the first electric control component 30. By providing the air inlet 101 and the air outlet 102, the gas flow in the electric control chamber 24 is increased, which is beneficial to the heat dissipation of the first electric control component 30. Further, in order to avoid the heat preservation of the electric control chamber 24 in a cold environment such as winter and to prevent the temperature in the electric control chamber 24 from being too low, the electric control box 100 further includes a first air valve (not shown in the figure) and a second air valve (not shown in the figure). The first air valve is provided at the air inlet 101 and is used to open or close the air inlet 101, and the second air valve is provided at the air outlet 102 and is used to open or close the air outlet 102. Understandably, in cold environments such as winter, the first air valve and the second air valve can be used to close the air inlet 101 and the air outlet 102, so that the electric control chamber 24 is a relatively closed space to improve its heat preservation, and the fan 50 and the electric heating element 91 can be used to increase the air temperature in the electric control chamber 24. In hot environments such as summer, the first air valve and the second air valve can be used to open the air inlet 101 and the air outlet 102 to increase the ventilation capacity of the electric control chamber 24 and improve the heat dissipation effect of the first electric control component 30 and the second electric control component 40.

[0062] In this embodiment, the first air valve and the second air valve are both composed of a stepper motor and an air outlet baffle, which is connected to the rotating shaft of the electrode. The air outlet baffle is arranged at the position of the air inlet 101 and the air outlet 102, and the stepper motor is used to drive the air outlet baffle to rotate to change the angle of the air outlet baffle, thereby realizing the opening or closing of the air inlet 101 and the air outlet 102.

[0063] According to the embodiment of the present utility model, please combine Figure 5 and Figure 6As shown, an outdoor unit 200 is also provided. The outdoor unit 200 includes a shell 210 and an electric control box 100. The shell 210 has an upper chamber 220 and an exhaust port 230. The exhaust port 230 is connected to the upper chamber 220 and is used to install a fan 240. The upper chamber 220 is used to install a heat exchanger 250.

[0064] The air outlet 102 of the electric control box 100 is connected to the upper chamber 220, so that when the upper chamber 220 is in a negative pressure state, under the action of the suction force of the upper chamber 220, the external air can flow into the electric control chamber 24 through the air inlet 101, and flow into the upper chamber 220 through the electric control chamber 24 and the air outlet 102, thereby cooling the first electric control component 30 and the second electric control component 40 in the electric controller and improving its heat dissipation efficiency.

[0065] According to the outdoor unit 200 proposed in the utility model, an air inlet 101 and an air outlet 102 are arranged on the electric control box 100, and the electric control chamber 24 is connected to the upper chamber 220 through the air outlet 102. When negative pressure is generated in the upper chamber 220 under the driving action of the fan 240, the external air flow can enter the electric control chamber 24 through the air inlet 101, and flow into the upper chamber 220 through the electric control chamber 24 and the air outlet 102. Therefore, the air flow velocity in the electric control chamber 24 can be effectively increased, and the heat dissipation efficiency of the electric control chamber 24 can be improved.

[0066] According to the third aspect 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. The HVAC device includes but is not limited to a central air conditioner and an air source heat pump air conditioner.

[0067] 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. An electric control box, characterized in that: The electric control box comprises: An electric control main housing, wherein the electric control main housing defines an electric control cavity, and the electric control cavity includes a first area and a second area that communicate with each other; A first electric control component, disposed in the first area; a second electric control component, disposed in the second area, wherein the heat generated by the first electric control component is greater than the heat generated by the first electric control component; A fan is disposed in the electric control chamber, and is used to drive at least a portion of the air in the first area to flow to the second area.

2. The electric control box according to claim 1, characterized in that: The first area and the second area are arranged in sequence along a first direction, the air inlet direction and the air outlet direction of the fan are consistent, and the air outlet direction of the fan is parallel to or at an angle to the first direction.

3. The electric control box according to claim 2, characterized in that: The first electric control component includes a reactor and a frequency conversion module spaced apart along a second direction, the second direction is perpendicular to the first direction, and along the first direction, the fan is disposed between the reactor and the second electric control component.

4. The electric control box according to claim 3, characterized in that: The second electric control component includes a main board, the air inlet side of the fan is arranged toward the reactor, and the air outlet side of the fan is arranged toward the main board; And / or, the fan is arranged at one end of the electric control chamber along the second direction, and along the first direction, the fan corresponds to the reactor.

5. The electric control box according to claim 3, characterized in that: The electric control box further comprises a partition assembly, the partition assembly is arranged in the second area and connected to the electric control main housing, the partition assembly divides the second area into a first space and a second space, and the second electric control assembly is arranged in the first space; The electric control box further comprises a power connection socket, and the power connection socket is arranged in the second space.

6. The electric control box according to claim 5, characterized in that: The electric control main housing comprises a bottom plate and a side plate connected to each other, and the first direction and the second direction are respectively parallel to the bottom plate; The electric control box also includes a safety baffle, which is rotatably or detachably connected to the partition assembly, and the safety baffle is arranged parallel to and spaced from the bottom plate, and at least part of the power supply terminal block is arranged between the safety baffle and the bottom plate.

7. The electric control box according to any one of claims 1 to 6, characterized in that: The electric control box also includes an electric heating element, which is arranged on the air inlet side or the air outlet side of the fan.

8. The electric control box according to claim 7, characterized in that: The electric control box also includes: A temperature sensor, wherein the temperature sensor is arranged in the electric control cavity; A control device is electrically connected to the electric heating element, the temperature sensor and the fan respectively.

9. The electric control box according to any one of claims 3 to 6, characterized in that: The electric control chamber has an air inlet and an air outlet arranged opposite to each other along the second direction; The electric control box further includes a first air valve and a second air valve, wherein the first air valve is disposed at the air inlet and is used to open or close the air inlet, and the second air valve is disposed at the air outlet and is used to open or close the air outlet.

10. An outdoor unit, characterized in that: The outdoor unit comprises an electric control box as claimed in any one of claims 1 to 9; the outdoor unit further comprises: The shell has an upper chamber and an exhaust port communicated with the upper chamber, the upper chamber is used to accommodate the heat exchanger, and the electric control chamber in the electric control box is communicated with the upper chamber.

11. A HVAC equipment, characterized in that: The HVAC equipment includes the outdoor unit according to claim 10.

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