Electric control box and heating device

Abstract

The application discloses an electric control box and a heating and ventilation equipment. The electric control box comprises a first box body, a main control module and a main control support frame. The first box body is provided with a first cavity. The main control module comprises a main control board and a main control power board. The main control board is provided with at least one interaction module. The main control power board is electrically connected with the main control board. The main control board and the main control power board are stacked. The main control power board is installed in the first cavity through the main control support frame. The main control board and the main control power board of the electric control box are stacked, and the main control power board is installed in the first cavity through the main control support frame. Therefore, the horizontal space of the electric control box is saved, and the compactness of the electric control box is improved.

Description

Technical Field

[0001] This application relates to the field of heating, ventilation and air conditioning (HVAC) equipment technology, and in particular to an electrical control box and HVAC equipment. Background Technology

[0002] Heating, ventilation, and air conditioning (HVAC) systems are an important component of building environmental control, encompassing multiple systems such as heating, ventilation, and air conditioning. They are widely used in residential, commercial, and industrial buildings. Their main function is to create a comfortable and healthy living and working environment by regulating parameters such as indoor temperature, humidity, and airflow.

[0003] As a key component of HVAC equipment, the electrical control board is used to control the operation of devices such as compressors and fans. To protect the electrical control board, it is usually housed in a box, which is called an electrical control box.

[0004] However, in related technologies, multiple electrical control boards are generally laid out flat inside the electrical control box, occupying a large amount of horizontal space, thereby increasing the installation space of the electrical control box and, to some extent, increasing the size and cost of HVAC equipment. Utility Model Content

[0005] This application provides an electrical control box and HVAC equipment, aiming to improve the structural compactness of the electrical control box, save installation space, and thus reduce the size and cost of the HVAC equipment.

[0006] To achieve the above objectives, a first aspect of this application provides an electronic control box, comprising: The first box body has a first cavity; The main control module is located in the first cavity; and Main control support frame; among which, The main control module includes: The main control board has at least one interactive module; and The main control power supply board is electrically connected to the main control board; The main control board and the main control power board are stacked together, and the main control power board is installed in the first cavity through the main control support frame.

[0007] In some embodiments, the main control board and the main control power board are stacked along the depth direction of the first cavity, and the main control board is closer to the opening of the first cavity than the main control power board.

[0008] In some embodiments, the electronic components on the main control power board are disposed on the side of the main control power board facing the opening of the first cavity; The electronic components on the main control board are located on the side of the main control board facing the opening of the first cavity.

[0009] In some embodiments, the main control power board is provided with a rectifier and filter circuit, the main control board covers the rectifier and filter circuit, and the at least one interactive module is located on the side of the main control board away from the rectifier and filter circuit and exposed in the opening of the first cavity.

[0010] In some embodiments, the main control support frame is provided with a receiving cavity for accommodating the main control power board.

[0011] In some embodiments, the electrical control box further includes a first latch, which is connected to the side wall of the receiving cavity or the main control power board, and the main control power board is fastened to the receiving cavity by the first latch.

[0012] In some embodiments, the main control power board is provided with a first positioning hole; The bottom wall of the receiving cavity is provided with a first positioning post, which passes through the first positioning hole.

[0013] In some embodiments, the electrical control box further includes a first fastener, a connecting block is provided on the outer periphery of the main control support frame, the connecting block is provided with a first connecting hole, a first connecting post is provided on the bottom wall of the first cavity, the first connecting post extends toward the first connecting hole and is connected to the connecting block through the first fastener.

[0014] In some embodiments, the connecting block is further provided with a second positioning hole located on one side of the first connecting hole, and the bottom wall of the first cavity is further provided with a second positioning post, the second positioning post passing through the second positioning hole.

[0015] In some embodiments, the control box further includes thermal adhesive that fills the receiving cavity and covers at least a portion of the main control power board.

[0016] In some embodiments, the electrical control box further includes a second fastener and a protective cover. The protective cover is disposed in the first cavity and covers the main control board. The protective cover has a positioning groove. The main control board also has a second connection hole. At least one first positioning element protrudes from the inner wall of the first cavity. The first positioning element includes: A positioning rib, protruding from the sidewall of the first cavity and extending along the depth direction of the first cavity, is used to mate with the positioning groove; and The second connecting post is located on one side of the positioning rib. One end of the second connecting post is connected to the bottom wall of the first cavity, and the other end extends toward the second connecting hole and is connected to the main control board through the second fastener.

[0017] In some embodiments, the main control board is further provided with a third positioning hole; The first positioning element also includes: The third positioning post is located on one side of the second connecting post. One end of the third positioning post is connected to the bottom wall of the first cavity, and the other end passes through the third positioning hole.

[0018] In some embodiments, the electrical control box further includes: A protective cover is disposed in the first cavity and covers the main control board. The protective cover has at least one window for exposing the at least one interactive module.

[0019] In some embodiments, the electrical control box further includes a first latch, which is connected to the protective cover or the main control board, and the protective cover is fastened to the main control board by the first latch.

[0020] In some embodiments, the first hook is connected to the side of the protective cover facing the main control board, and the first hook hooks onto the edge of the substrate of the main control board to fasten the protective cover to the main control board; Alternatively, the first hook is connected to the side of the main control board facing the protective cover, and the first hook hooks onto the inner wall of the protective cover to fasten the protective cover to the main control board.

[0021] In some embodiments, the inner wall of the first cavity is provided with a first positioning member, and the edge of the protective cover facing the main control board is provided with a rim, the rim being provided with a positioning groove for cooperating with the first positioning member.

[0022] In some embodiments, four first positioning members are provided, and the four first positioning members are respectively located at the four corners of the bottom wall of the first cavity.

[0023] In some embodiments, the at least one interaction module includes one or more of an inspection module, a storage interface module, and a communication interface module.

[0024] In some embodiments, the interaction module includes a communication interface module, and the window includes a first view for displaying the communication interface module.

[0025] In some embodiments, the first window is located at the bottom edge of the protective cover.

[0026] In some embodiments, the interaction module further includes an inspection module, and the window further includes a second window for displaying the inspection module; And / or, the interaction module further includes a storage interface module, and the window further includes a third window for displaying the storage interface module.

[0027] In some embodiments, the protective cover has a clearance cavity on the side facing the main control board, the clearance cavity being used to avoid electronic components on the main control board.

[0028] In some embodiments, the interaction module further includes a storage interface module, and the sidewall of the clearance cavity has a third window for exposing the storage interface module.

[0029] In some embodiments, the protective cover has a clearance groove on the side facing away from the main control board, and the third window connects the clearance groove and the clearance cavity.

[0030] In some embodiments, the first housing includes: Heat dissipation structure; and The first lid, in conjunction with the heat dissipation structure, forms the first cavity and is movably connected to the opening of the first cavity.

[0031] In some embodiments, the top edge of the first lid is rotatably connected to the heat dissipation structure, and the first cavity is opened or closed by flipping the first lid in the vertical direction.

[0032] In some embodiments, the heat dissipation structure includes: The main body of the cold plate is plate-shaped and has heat dissipation channels; and The first enclosure is connected to the main body of the cold plate; The first box cover, the first enclosure, and the cold plate body cooperate to form the first cavity.

[0033] In some embodiments, the heat dissipation structure includes: Cold plate body; and The first enclosure panel is an integral structure with the main body of the cold plate; The first box cover, the first enclosure, and the cold plate body cooperate to form the first cavity.

[0034] In some embodiments, the first housing further includes a second cover and a third cover. The second cover mates with one side of the heat dissipation structure to form a second cavity, and the third cover mates with the other side of the heat dissipation structure to form a third cavity. The heat dissipation structure has a first opening that connects the first cavity and the second cavity. The electrical control box also includes a frequency converter module, a power connection structure, and electrical connection wires. The frequency converter module includes a drive board and a filter board. The drive board is located in the second cavity, and the filter board is located in the third cavity. The power connection structure passes through the first opening, and its two ends are respectively connected to the drive board and the filter board. The electrical connection wires extend from the second cavity to the first cavity to electrically connect the drive board and the main control module.

[0035] In some embodiments, the control box further includes a central module, a second housing, and a central communication line. The second housing is independently disposed from the first housing. The central module is disposed in the second housing. One end of the central communication line is electrically connected to the central module, and the other end extends into the first cavity and is electrically connected to the main control board.

[0036] A second aspect of this application provides a heating, ventilation, and air conditioning (HVAC) device, including a housing and an electrical control box as described above, wherein the electrical control box is disposed within the housing.

[0037] In some embodiments, the housing is provided with an access port; the electrical control box is located at the access port, wherein the first cavity is disposed facing the access port.

[0038] In the electrical control box of this application, the main control board and the main control power board of the main control module are stacked, and the main control power board is installed in the first cavity via a main control support frame. The stacked arrangement of the main control board and the main control power board, compared to the traditional flat arrangement, utilizes the vertical space of the electrical control box, saving horizontal installation space and making the internal layout of the electrical control box more compact. For HVAC equipment requiring miniaturization, on the one hand, the saved installation space allows the electrical control box to be installed in smaller HVAC equipment; on the other hand, the reduction in the size of the electrical control box leads to a reduction in the overall size of the HVAC equipment, thereby reducing material usage and lowering production costs. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the exposed access panel of a heating, ventilation, and air conditioning (HVAC) device according to an embodiment of this application. Figure 2 for Figure 1 A structural diagram from another angle of the structure; Figure 3This is a schematic diagram of the structure of an electrical control box according to an embodiment of this application (the second box body is omitted). Figure 4 for Figure 3 A structural exploded view of the electrical control box (the central control box is omitted); Figure 5 This is a schematic diagram of the main control board according to an embodiment of this application; Figure 6 This is a schematic diagram of the main control board and protective cover according to an embodiment of this application; Figure 7 This is a schematic diagram of the structure of a protective cover according to an embodiment of this application; Figure 8 This is an exploded view of a portion of the structure of the main control board, main control power board and first housing according to an embodiment of this application; Figure 9 This is a partial structural diagram of the first box body according to an embodiment of this application; Figure 10 This is a partial structural diagram of the main control board and the first housing according to an embodiment of this application; Figure 11 This is an exploded view of the main control power board and main control support frame according to an embodiment of this application; Figure 12 This is an exploded structural diagram of a portion of the electrical control box of this application; Figure 13 This is another exploded structural diagram of a portion of the electrical control box in this application; Figure 14 This is a schematic diagram of a heat dissipation structure according to an embodiment of this application; Figure 15 This is a schematic diagram of the structure of a power connector and a connector protective shell according to an embodiment of this application.

[0041] Explanation of icon numbers: 100. Electrical control box; 1. First box body; 11. Heat dissipation structure; 111. Cold plate body; 1111. Heat dissipation channel; 1101. First opening; 1102. Mounting port; 112. First enclosure; 113. Second enclosure; 114. Third enclosure; 12. First box cover; 13. Second box cover; 14. Third box cover; 15. Terminal block protective shell; 1501. Power cord outlet; 101. First cavity; 102. Second cavity 103. Third cavity; 104. First positioning component; 1041. Positioning rib; 1042. Second connecting post; 1043. Third positioning post; 105. First connecting post; 106. Wire passage groove; 1061. First wire passage opening; 1062. Second wire passage opening; 107. First positioning post; 2. Main control module; 21. Main control board; 2101. Second connecting hole; 2102. Third positioning hole; 211. Main control base plate; 210 212. Interaction module; 213. Communication interface module; 214. Inspection module; 215. Storage interface module; 22. Main control power board; 221. Rectifier and filter circuit; 2211. Transformer; 2212. Capacitor; 2201. First positioning hole; 2202. Third connection hole; 3. Protective cover; 30. Window; 301. First viewing window; 302. Second viewing window; 303. Third viewing window; 304. Avoidance cavity; 305. Avoidance 31. Groove; 32. Second hook; 3201. Edge; 4. Positioning groove; 4. Main control support frame; 401. Receiving cavity; 41. First hook; 42. First positioning post; 43. Connecting block; 4301. First connecting hole; 4302. Second positioning hole; 5. Frequency conversion module; 51. Drive board; 52. Filter board; 501. Power connection structure; 502. Electrical connection wire; 6. Power terminal block; 61. Insulating base; 62. Conductive post; 2. Outdoor unit; 200. Casing; 200a. Inspection port; 300. Air supply fan.

[0042] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0044] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0045] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0048] Heating, ventilation, and air conditioning (HVAC) systems are used to regulate the indoor environment, including functions such as heating, ventilation, and air conditioning. Their main purpose is to provide users with a comfortable and healthy indoor environment by controlling parameters such as temperature, humidity, and airflow. Common HVAC equipment includes air conditioners, radiators, and ventilation systems. These devices are widely used in residential, commercial buildings, and industrial settings.

[0049] Taking HVAC equipment as an example, an air conditioning system can be a multi-split system for buildings, that is, multiple indoor units are connected in parallel with one or more outdoor units to form a refrigerant circuit so that the refrigerant can circulate. Figure 1 and Figure 2 The diagram shows the outdoor unit 2 of the air conditioning system. The outdoor unit 2 has a casing 200, inside which are housed a compressor, switching valve, outdoor heat exchanger, outdoor expansion valve, and oil separator, etc. These components are connected by refrigerant piping. Additionally, the outdoor unit 2 includes a blower fan 300.

[0050] Furthermore, the outdoor unit 2 also includes an electrical control box 100. The housing 200 is the external structure of the HVAC equipment, protecting internal components, providing a mounting base, and optimizing airflow. The housing 200 can be made of metal or high-strength plastic, possessing good mechanical strength and corrosion resistance. The housing 200 can be rectangular and placed on the roof or ground. The housing 200 isolates internal live components from the outside environment, preventing direct contact by users and reducing the occurrence of safety accidents such as electric shock. The electrical control box 100 is the core control component in the HVAC equipment. Installed inside the housing 200, the electrical control box 100 facilitates maintenance and replacement, and also simplifies the installation and layout of the overall HVAC equipment structure. The electrical control box 100 is responsible for the precise control of the HVAC equipment's operation. It is equipped with various control circuits, using various electronic components and wiring to achieve control functions for the HVAC equipment, including starting, stopping, temperature adjustment, and mode switching.

[0051] The housing 200 provides protection for the electronic components inside the control box 100, preventing dust, moisture, oil, and other external impurities from entering. It also protects the control box 100 from extreme environmental conditions (such as temperature, humidity, and chemical corrosion), ensuring normal operation in various environments and extending the lifespan of the control box 100. The control box 100 contains high-voltage circuits and live components; housing them within the housing 200 prevents accidental contact by users, reducing the risk of electric shock and improving safety. Furthermore, the housing 200 also acts as shielding, reducing the impact of external electromagnetic interference on the electronic components inside the control box 100, ensuring the stability and reliability of the control system.

[0052] like Figure 1 and Figure 2 As shown, in this embodiment, the housing 200 is rectangular, while the electrical control box 100 has a length direction, which is arranged along the height direction (i.e., the vertical direction) of the housing 200. Therefore, the internal structure of the electrical control box 100 has a vertical arrangement. This vertical length arrangement can better meet the overall structural layout requirements of the equipment when the housing 200 has a large height and limited horizontal space, and is also conducive to heat dissipation and maintenance operations.

[0053] It should be noted that the present invention is not limited to the arrangement of the control box 100 along the height direction of the housing 200 in the above embodiments. In other embodiments, the control box 100 may also be arranged along the length direction of the housing 200, or the control box 100 may be arranged along the width direction of the housing 200. Furthermore, the control box 100 may not be a single form extending along the length direction; it may also vary according to the internal space of the housing 200, for example, it may be formed into an approximate "L" shape, "T" shape, etc.

[0054] In some embodiments, an air duct is formed within the housing 200. This air duct guides air to flow along a predetermined path, preventing disordered airflow within the housing 200 and thus improving heat dissipation efficiency. Specifically, as exemplarily shown in the figure, the air supply fan 300 is located at the top of the housing 200, i.e., at the top of the air duct, and blows air upwards. Furthermore, the electrical control box 100 is located within the air duct, thus utilizing the airflow within the air duct to remove the heat generated by the electrical control box 100, ensuring effective heat dissipation of the electrical control box 100.

[0055] Please continue reading. Figure 1 and Figure 2 In some embodiments, the housing 200 is provided with an access port 200a. In one configuration, the housing 200 includes a housing body and an access door rotatably connected to the housing body, allowing maintenance personnel to expose the access port 200a by opening the access door. In another configuration, the housing 200 includes a housing body and a front panel connected to the housing body. The front panel is fixedly connected to the housing body by screws, allowing maintenance personnel to separate the front panel from the housing body by removing the screws to expose the access port 200a. This application does not impose specific limitations on the manner in which the access port 200a is exposed.

[0056] The electrical control box 100 is located at the access port 200a, and its first cavity 101 for installing the main control module 2 is set facing the access port 200a. Maintenance personnel can quickly find the electrical control box 100 without having to extend excessively into the housing 200 to operate, which greatly improves the efficiency of maintenance and repair.

[0057] Please see Figure 3 , Figure 4 and Figure 5 In some embodiments, the electrical control box 100 includes a first box body 1, a main control module 2, and a main control support frame 4.

[0058] In this embodiment, the electrical control box 100 uses a first box body 1 as its main frame, and the first box body 1 has a first cavity 101 inside. The first box body 1 can be made of high-strength insulating engineering plastic or metal alloy, such as polycarbonate (PC) or aluminum alloy. The shape of the first cavity 101 can be various, such as regular shapes like rectangles or circles, or irregular shapes like polygons, specifically designed according to the layout and installation requirements of the main control module 2 inside the first box body 1, thereby providing adaptation space for the subsequent installation of the main control module 2. For example, the first cavity 101 in this embodiment is roughly rectangular.

[0059] In this embodiment, the main control module 2 is a key component for the control box 100 to realize its control functions. Specifically, the main control module 2 is located inside the first cavity 101 and includes a main control board 21 and a main control power board 22.

[0060] The main control board 21 is the core carrier for signal processing and command output of the electronic control box 100, and at least one interactive module 210 is mounted on it. Exemplarily, the at least one interactive module 210 includes one or more of an inspection module 213, a storage interface module 214, and a communication interface module 212. The inspection module 213 may include a display screen and buttons, allowing the user to switch inspection items via buttons and view detailed parameters (such as voltage, current, and frequency) on the display screen. The storage interface module 214 may be a USB interface, a Micro SD card interface, etc., for data transmission. The communication interface module 212 may be an Ethernet interface, a wireless interface, a serial port interface, etc., for connecting various low-voltage lines, such as sensor signal lines and device communication lines. The main control board 21 is typically a multilayer printed circuit board (PCB), integrating key electronic components such as a microprocessor, memory chip, and signal processing chip. Exemplarily, the main control board 21 includes a main control substrate 211, on which at least one interactive module 210 is mounted.

[0061] The main control power board 22 is mounted in the first cavity 101 via the main control support frame 4. The main control support frame 4 is used to mount and fix the main control power board 22, thereby ensuring the stability of the stacking position and electrical connection between the main control power board 22 and the main control board 21. The main control support frame 4 can be a bracket structure, fixed to the inner wall of the first cavity 101 by screws, clips, or other connection methods. The bracket can be provided with mounting holes or slots for fixing the main control power board 22.

[0062] In this embodiment, the main control board 21 and the main power supply board 22 are stacked. Compared to a traditional flat arrangement, this stacked arrangement utilizes the vertical space of the electrical control box 100, saving horizontal installation space and making the internal layout of the electrical control box 100 more compact. For HVAC equipment requiring miniaturization, on the one hand, the saved installation space allows the electrical control box 100 to be installed in smaller HVAC equipment; on the other hand, the reduced size of the electrical control box 100 leads to a smaller overall size of the HVAC equipment, thereby reducing material usage and lowering production costs.

[0063] In this embodiment, the main control power board 22 is electrically connected to the main control board 21 and is used for high-voltage power access and to provide a stable power supply to the main control board 21.

[0064] Considering the safety hazards during maintenance of the main control module 2, in some embodiments, the main control board 21 and the main control power board 22 are stacked along the depth direction of the first cavity 101, with the main control board 21 closer to the opening of the first cavity 101. In actual operation, the main control power board 22 connects to high-voltage lines, posing a higher risk of electric shock; while the main control board 21 handles low-voltage signals, offering relatively higher safety. Through this layered layout, during wiring operations, the operator directly faces the interaction module 210 of the main control board 21, only encountering low-voltage signals, effectively avoiding direct contact with high-voltage lines and improving the safety of the electrical control box 100 during operation.

[0065] Meanwhile, the main control board 21 and the main control power board 22 are stacked and spaced apart, which can reduce the impact of electromagnetic interference generated by the main control power board 22 on the main control board 2131 and improve the stability and accuracy of the signal.

[0066] In some embodiments, the electronic components on the main power board 22 are disposed on the side of the main power board 22 facing the opening of the first cavity 101; the electronic components on the main control board 21 are disposed on the side of the main control board 21 facing the opening of the first cavity 101. That is, all the electronic components on the main power board 22 and the main control board 21 are disposed on the side facing the opening of the first cavity 101.

[0067] When a fault occurs inside the control box 100 and requires repair, maintenance personnel can directly access all electronic components without flipping the main power board 22 and the main control board 21, enabling rapid troubleshooting and repair. This not only reduces the number of steps and the risk of component damage due to frequent flipping, but also improves maintenance efficiency.

[0068] like Figure 4As shown, in some embodiments, the main control power board 22 is provided with a rectifier and filter circuit 221, the main control board 21 covers the rectifier and filter circuit 221, and at least one interactive module 210 is provided on the side of the main control board 21 away from the rectifier and filter circuit 221 and exposed in the opening of the first cavity 101.

[0069] The rectifier-filter circuit 221 is used to convert high-voltage electricity into low-voltage electricity. Exemplarily, the rectifier-filter circuit 221 includes a transformer 2211 and a capacitor 2212. The transformer 2211 is used to reduce the voltage of the input high-voltage electricity. The capacitor 2212 is used to filter the low-voltage electricity output from the transformer 2211, smoothing the voltage waveform and making the output low-voltage electricity more stable.

[0070] The main control board 21 covers the rectifier and filter circuit 221, forming a physical shield for the rectifier and filter circuit 221, preventing the transformer 2211, capacitor 2212, and other components in the rectifier and filter circuit 221 from being directly exposed. By hiding the rectifier and filter circuit 221, the main control board 21 prevents users from accidentally touching the live components in the rectifier and filter circuit 221 when operating or maintaining the control box 100, thus avoiding electric shock and improving the safety of the control box 100. Furthermore, it reduces the corrosion of the components in the rectifier and filter circuit 221 by external dust and moisture, protecting the circuit components and extending the service life of the control box 100. In this embodiment, the interaction module 210 is positioned on the side of the main control board 21 facing away from the rectifier and filter circuit 221, avoiding the mixing of the interaction module 210 and the rectifier and filter circuit 221, thus making the internal layout of the control box 100 more reasonable. The interaction module 210 is exposed at the opening of the first cavity 101, facilitating direct operation by the user without needing to remove other components inside the control box 100, improving operational convenience and allowing users to quickly operate the control box 100, thereby increasing work efficiency.

[0071] In some embodiments, such as Figure 8 , Figure 9 and Figure 11 As shown, in order to ensure the stability and heat dissipation of the main control power board 22, the main control support frame 4 in this embodiment can be made of metal material (such as aluminum alloy) by stamping or made of engineering plastic by injection molding. The main control support frame 4 has a receiving cavity 401 inside, which is adapted to the size and shape of the main control power board 22 for mounting the main control power board 22.

[0072] In some embodiments, to facilitate the installation of the main control power board 22, the control box 100 further includes a first latch 41. Specifically, the first latch 41 is connected to the side wall of the receiving cavity 401 or the main control power board 22, and the main control power board 22 is fastened to the receiving cavity 401 by the first latch 41.

[0073] In one of the settings, such as Figure 11 As shown, the first hook 41 is provided on the side wall of the receiving cavity 401. For example, four first hooks 41 are provided, and they are distributed in pairs on both sides of the main control support frame 4. The first hooks 41 can be made of elastic plastic material. During installation, the first hooks 41 are fastened to the edge of the main control power board 22. The fastening force generated by their own elasticity is used to realize the quick connection between the main control power board 22 and the main control support frame 4. During disassembly, the main control power board 22 can be removed by simply prying the first hooks 41, which is convenient for maintenance operations.

[0074] In another configuration, the first hook 41 is positioned on the edge of the main control power board 22. For example, four first hooks 41 are provided, distributed in pairs on both sides of the main control power board 22. The first hooks 41 can be made of elastic plastic. During installation, the first hooks 41 are fastened to the side wall of the receiving cavity 401, and the fastening force generated by their own elasticity enables a quick connection between the main control power board 22 and the main control support frame 4. During disassembly, the main control power board 22 can be removed simply by gently prying the first hooks 41, facilitating maintenance.

[0075] In some embodiments, the main control power board 22 is provided with a first positioning hole 2201, and a first positioning post 42 is provided on the bottom wall of the receiving cavity 401 corresponding to the first positioning hole 2201. During installation, the first positioning post 42 passes through the first positioning hole 2201 to achieve precise positioning. Further, a connecting block 43 is provided on the outer periphery of the main control support frame 4. In one configuration, two connecting blocks 43 are provided, located on both sides of the outer periphery of the main control support frame 4. The connecting block 43 has a first connecting hole 4301, and a first connecting post 105 is provided on the bottom wall of the first cavity 101. The first connecting post 105 is aligned with the first connecting hole 4301 and tightened by a first fastener (such as a bolt) to securely install the main control support frame 4 on the bottom of the first cavity 101.

[0076] To achieve positioning of the main control support frame 4, in some embodiments, the connecting block 43 is also provided with a second positioning hole 4302. The second positioning hole 4302 is located on one side of the first connecting hole 4301. The second positioning hole 4302 cooperates with the third positioning post on the bottom wall of the first cavity 101 to further improve the stability of the installation.

[0077] The main control power board 22 generates heat during operation. To address the heat dissipation issue of the main control power board 22, in some embodiments, the receiving cavity 401 of the main control support frame 4 is filled with thermal adhesive. Thermal adhesive can be thermally conductive silicone grease. After filling, the thermal adhesive at least covers a portion of the main control power board 22, thereby rapidly conducting the heat generated by the main control power board 22 to the main control support frame 4, and then dissipating it to the external environment through the heat dissipation structure 11 of the first housing 1. This reduces the operating temperature of the main control power board 22, ensuring it operates within a stable temperature range and extending its service life.

[0078] To further enhance the safety performance of the electrical control box 100, in some embodiments, the electrical control box 100 of this embodiment also includes a protective cover 3, which is disposed in the first cavity 101 and covers the main control board 21. The protective cover 3 may be made of insulating plastic material.

[0079] The protective cover 3 covers the exposed electronic components on the main control board 21, preventing staff from accidentally touching the electronic components during routine maintenance or repair, and preventing short circuits, component damage and other malfunctions.

[0080] The protective cover 3 has at least one window 30 for displaying the interaction module 210 of the main control board 21. For example, the interaction module 210 includes a communication interface module 212, and the window 30 includes a first viewing window 301 for displaying the communication interface module 212. Thus, while ensuring effective protection of other electronic components of the main control board 21, operators do not need to disassemble the entire protective cover 3 when wiring communication lines; they only need to operate through the first viewing window 301 to complete the wiring of the low-voltage lines, making the operation convenient and safe.

[0081] In one embodiment, the first viewing window 301 is located at the bottom edge of the protective cover 3, so that the cable can be directly led out from the bottom edge of the protective cover 3 during wiring, which facilitates the wiring operation.

[0082] In some embodiments, such as Figure 5 and Figure 6 As shown, the interactive module 210 also includes an inspection module 213. The protective cover 3 is correspondingly provided with a second window 302, which is used to display the inspection module 213, so that the operator can view the working status parameters of the electrical control box 100 in real time.

[0083] In some embodiments, the interaction module 210 further includes a storage interface module 214, and the protective cover 3 is correspondingly provided with a third window 303, which is used to expose the storage interface module 214. The storage interface module 214 is used to realize data interaction between the control box 100 and external storage devices. Taking the storage interface module 214 as an example, which includes a USB interface, the USB interface can not only transmit data but also connect devices such as USB flash drives, realizing bidirectional data transmission. This embodiment provides a third window 303 to facilitate users connecting external storage devices and simplify operation. In some embodiments, such as Figure 7 As shown, the protective cover 3 is provided with a clearance structure to avoid the electronic components on the main control board 21. Specifically, the protective cover 3 has a clearance cavity 304 on the side facing the main control board 21, the shape of which is adapted to the layout of the electronic components on the main control board 21, so as to reserve sufficient space for the electronic components and avoid the components being squeezed and damaged during the installation of the protective cover 3.

[0084] In some embodiments, the third window 303 is formed on the side wall of the clearance cavity 304, and a clearance groove 305 is provided on the side of the protective cover 3 facing away from the main control board 21. The third window 303 connects the clearance groove 305 and the clearance cavity 304. From a top view, the storage interface module 214 is covered by the protective cover 3, making it less likely to be accidentally touched. When it is necessary to connect an external storage device, the operator can insert the external storage device through the clearance groove 305 and the third window 303 to connect it to the storage interface module 214. This operation is convenient and does not affect the protective function of the protective cover 3.

[0085] In some embodiments, a snap-fit ​​installation structure is provided to facilitate the installation of the protective cover 3. Specifically, the electrical control box 100 also includes a second hook 31, which is connected to the protective cover 3 or the main control board 21, and the protective cover 3 is fastened to the main control board 21 by the second hook 31.

[0086] In one configuration method, such as Figure 7 As shown, the second hook 31 is located on the side of the protective cover 3 facing the main control board 21. For example, four second hooks 31 are provided, and they are distributed in pairs on both sides of the protective cover 3. The second hooks 31 can be made of elastic plastic material. During installation, the second hooks 31 are fastened to the edge of the main control board 211. The fastening force generated by their own elasticity is used to realize the quick connection between the protective cover 3 and the main control board 21. During disassembly, the protective cover 3 can be removed by simply prying the second hooks 31, which is convenient for maintenance operations.

[0087] In another configuration, the second hook 31 is connected to the side of the main control board 211 facing the protective cover 3. For example, four second hooks 31 are provided, distributed in pairs on both sides of the main control board 211. During installation, the second hooks 31 are fastened to the inner wall of the protective cover 3. The second hooks 31 utilize their own elasticity to generate a fastening force, enabling a quick connection between the protective cover 3 and the main control board 21. During disassembly, the protective cover 3 can be removed simply by gently prying the second hooks 31, facilitating maintenance.

[0088] In some embodiments, to ensure the accurate installation of the protective cover 3, this embodiment also provides a positioning structure for positioning the protective cover 3. Specifically, such as... Figure 9 As shown, a first positioning member 104 protrudes from the inner wall of the first cavity 101, and a perimeter 32 is provided on the edge of the protective cover 3, with a positioning groove 3201 that cooperates with the first positioning member 104. Exemplarily, the first positioning member 104 includes a positioning rib 1041 and a second connecting post 1042. The positioning rib 1041 extends along the depth direction of the first cavity 101, and the positioning rib 1041 is inserted into the positioning groove 3201 to achieve positioning of the protective cover 3. In one configuration, two positioning ribs 1041 are provided, and the two positioning ribs 1041 are spaced apart on the inner wall of the same side of the first cavity 101.

[0089] In this embodiment, the second connecting post 1042 is used to fix the main control board 21. Specifically, the second connecting post 1042 is located on one side of the positioning rib 1041 and is integrally formed with the positioning rib 1041. One end of the second connecting post 1042 is fixed to the bottom wall of the first cavity 101, and the other end is aligned with the second connecting hole 2101 on the main control board 21. It is tightened and fixed by the second fastener (such as screw) to ensure that the main control board 21 is installed firmly.

[0090] In some embodiments, such as Figure 5 , Figure 9 and Figure 10 As shown, the main control board 21 is also provided with a third positioning hole 2102, and the first positioning component 104 also includes a third positioning post 1043. The third positioning post 1043 is located on one side of the second connecting post 1042 and is integrally formed with the second connecting post 1042. The third positioning post 1043 passes through the third positioning hole 2102, thereby accurately positioning the main control board 21 and preventing the main control board 21 from shifting during installation.

[0091] In some embodiments, to improve the installation stability of the main control board 21 and the protective cover 3, four first positioning members 104 are provided in this embodiment. Specifically, one first positioning member 104 is provided at each of the four corners of the bottom wall of the first cavity 101. The four positioning members are roughly arranged in a rectangular distribution, thereby constructing a support structure with four fulcrums. When the main control board 21 and the protective cover 3 are installed, the second connecting post 1042 is tightened and fixed to the main control board 21 by the second fastener (such as screw), and the positioning rib 1041 is inserted into the positioning groove 3201 to realize the positioning and support of the protective cover 3, thereby realizing the installation and support of the main control board 21 and the protective cover 3. Compared with single-point or double-point positioning, this four-corner positioning method can more evenly distribute the stress generated during installation and use, avoiding damage to components due to stress concentration. At the same time, the installation stability of the four-corner positioning structure is better, which can reduce the occurrence of problems such as component loosening and component falling off, thereby improving the stability of the internal structure of the electrical control box 100 and the reliability of the electrical connection.

[0092] In some embodiments, such as Figure 12 , Figure 13 and Figure 14 As shown, the first box 1 includes a heat dissipation structure 11 and a first box cover 12.

[0093] Specifically, the heat dissipation structure 11 is sealed to the first cover 112 to form the first cavity 101. The heat dissipation structure 11 is the main body of the first cavity 1, and a portion of the heat dissipation structure 11 can be made of a material with good thermal conductivity, such as aluminum alloy. The heat dissipation structure 11 can also be designed with internal heat dissipation channels 1111. The heat dissipation channels 1111 can be straight or curved, used to guide the flow of the heat exchange medium, such as air or liquid, i.e., to remove heat through air cooling or water cooling.

[0094] In one configuration, the heat dissipation structure 11 includes a cold plate body 111 and a first enclosure plate 112. The cold plate body 111 can be made of a material with good thermal conductivity, such as aluminum alloy or copper alloy, and has a plate-like structure with internal heat dissipation channels 1111. The first enclosure plate 112, the cold plate body 111, and the first cover 12 cooperate to form the first cavity 101.

[0095] In this embodiment, the heat dissipation capacity of the entire electrical control box 100 is improved by the joint action of the heat-dissipating adhesive in the cavity 401 of the main control support frame 4 and the cold plate body 111.

[0096] Specifically, the main control support frame 4 acts as a bridge throughout the heat dissipation process. Because the thermal adhesive conducts heat to the main control support frame 4, it becomes an intermediate heat carrier. Simultaneously, the main control support frame 4 is in close contact with the cold plate body 111, allowing heat to be transferred from the main control support frame 4 to the cold plate body 111. The back side of the main control support frame 4 is in contact with the cold plate body 111, which facilitates even heat distribution, prevents localized overheating, and further improves the heat dissipation effect.

[0097] The cold plate body 111 is the core component of the entire heat dissipation system. When heat is transferred from the main control support frame 4 to the cold plate body 111, the cold plate body 111 utilizes its heat dissipation channels 1111 to dissipate the heat to the external environment through heat exchange. Through the combined action of the cold plate body 111 and the thermal paste within the cavity 401 of the main control support frame 4, a highly efficient heat dissipation system is formed. The heat generated by the main control power board 22 can be quickly transferred to the external environment, reducing the operating temperature of the main control power board 22, ensuring the stable operation of the control box 100, extending its service life, and improving the reliability and performance of the entire system.

[0098] In another configuration, the heat dissipation structure 11 includes a cold plate body 111 and a first enclosure plate 112. The first enclosure plate 112 and the cold plate body 111 are made of the same thermally conductive material (such as aluminum alloy, copper alloy, etc.) and formed into an integral structure through a one-piece molding process. For example, by using a casting process, the cold plate body 111 and the first enclosure plate 112 can be made into an integral structure, which can ensure that there is no seam between the two and improve the thermal conductivity.

[0099] The first cover 12, the first surrounding plate 112, and the cold plate body 111 cooperate to form a first cavity 101, and the main control module 2 is installed inside the first cavity 101. Since the main control module 2 generates relatively little heat, in this embodiment, no heat dissipation channel 1111 is provided on the part of the cold plate body 111 corresponding to the main control module 2. Heat dissipation is achieved by utilizing the 360-degree surrounding structure formed by the first surrounding plate 112 and the cold plate body 111. The surrounding heat dissipation method allows heat to be evenly conducted from the main control module 2 to the surface of the cold plate body 111 and the first surrounding plate 112, and then dissipated through heat exchange with the outside air, thereby meeting the heat dissipation requirements of the main control module 2. At the same time, it avoids the problem of excessively low temperature of the cold plate body 111 that may be caused by setting the heat dissipation channel 1111 on the cold plate body 111, and prevents water vapor in the air from condensing on the surface of the main control module 2 due to the low temperature of the cold plate body 111, which could lead to short circuits and other faults. The design of the aforementioned heat dissipation structure 11 ensures heat dissipation while improving the reliability and stability of the operation of the electrical control box 100.

[0100] In some embodiments, the top edge of the first cover 12 is rotatably connected to the heat dissipation structure 11. For example, the top edge of the first cover 12 is connected to the first enclosure 112 of the heat dissipation structure 11 via a hinge or a rotating shaft or other rotating component. The first cover 112 can be flipped in the vertical direction to open and close the first cavity 101, thereby facilitating the operator to perform installation, debugging, maintenance and other operations on the main control module 2 of the electrical control box 100. The operation process is simple and quick. At the same time, in the closed state, the first cover 112 can protect the internal components from external dust, moisture and other interference.

[0101] In some embodiments, the first housing 1 further includes a second cover 13 and a third cover 14, thereby constructing a multi-cavity structure. Specifically, the second cover 13 cooperates with one side of the heat dissipation structure 11 to form a second cavity 102, and the third cover 14 cooperates with the other side of the heat dissipation structure 11 to form a third cavity 103. The multi-cavity structure of this embodiment breaks through the limitations of the traditional single cavity and provides a spatial basis for the functional expansion of the electronic control box 100.

[0102] Specifically, the heat dissipation structure 11, as a key connecting component, has a first opening 1101 in the portion located between the first cavity 101 and the second cavity 102. This first opening 1101 serves as a channel for connecting different cavity functional modules, allowing the drive board 51 and filter board 52 in the frequency converter module 5 to be installed in the second cavity 102 and the third cavity 103 respectively, while the connection between the drive board 51 and the filter board 52 is achieved through the power connection structure 501.

[0103] In one configuration, the heat dissipation structure 11 further includes a second enclosure 113 connected to one side of the cold plate body 111. The first enclosure 112 and the second enclosure 113 are connected to the same side of the cold plate body 111. The second cover 13, the second enclosure 113, and the cold plate body 111 are sealed together to form a second cavity 102. The third cover 14 is sealed together with the other side of the cold plate body 111 to form a third cavity 103. That is, the second cavity 102 and the third cavity 103 are located on both sides of the cold plate body 111 along the thickness direction of the cold plate body 111, wherein the second cavity 102 and the first cavity 101 are located on the same side of the cold plate body 111.

[0104] In some embodiments, the heat dissipation structure 11 may further be provided with a third enclosure 114. The third enclosure 114 is connected to the side of the cold plate body 111 facing away from the second enclosure 113. In this case, the third cover 14, the third enclosure 114, and the cold plate body 111 cooperate to form a third cavity 103; or, the third cover 14 directly seals and covers the side of the cold plate body 111 facing away from the second enclosure 113 to form the third cavity 103. The diverse cavity formation methods can be flexibly selected according to actual production needs and spatial layout, enhancing the adaptability of the design.

[0105] The electrical control box 100 in this embodiment also includes a frequency converter module 5, a power connection structure 501, and electrical connection wires. The frequency converter module 5 includes a drive board 51 and a filter board 52, which are respectively installed in the second cavity 102 and the third cavity 103. The drive board 51 is mainly used for frequency conversion drive control of loads such as motors and fans. By adjusting the output voltage and frequency, it realizes the speed regulation, start and stop functions of motors and fans. The filter board 52 filters the input and output currents, removes harmonic interference, and improves power quality.

[0106] The power connection structure 501 can be a conductive post, wire, or other conductive connector. The power connection structure 501 passes through the first opening 1101, and its two ends are respectively connected to the drive board 51 and the filter board 52 to electrically connect the drive board 51 and the filter board 52. By setting the first opening 1101 and the power connection structure 501, the connection between circuits can be simplified, and the complexity and length of internal wiring can be reduced.

[0107] The electrical connection wire can be made of multi-strand copper wire or coaxial cable. The electrical connection wire extends from the second cavity 102 to the first cavity 101, connecting the drive board 51 and the main control module 2, so that the main control module 2 can control the frequency converter module 5 and exchange data.

[0108] As core components of the frequency converter module 5, the drive board 51 and filter board 52 generate heat during operation. If heat cannot be dissipated effectively and in a timely manner, their performance and service life will be severely affected. In this embodiment, by placing the drive board 51 and filter board 52 on the second cavity 102 and the third cavity 103 on both sides of the cold plate body 111, the heat dissipation advantage of the cold plate body 111 is fully utilized, thereby improving the overall heat dissipation performance of the electrical control box 100.

[0109] From a structural layout perspective, the second cover 13, the second enclosure 113, and the cold plate body 111 are sealed together to form the second cavity 102, and the drive plate 51 is installed inside the second cavity 102; the third cover 14 and the cold plate body 111 (or the third enclosure 114 and the cold plate body 111) are fitted together to form the third cavity 103, and the filter plate 52 is installed inside the third cavity 103. As a key component connecting the two cavities, the cold plate body 111, with its plate-like structure and internal heat dissipation channel 1111 design, provides a good foundation for heat dissipation.

[0110] When the drive board 51 and filter board 52 are working, the heat generated is first conducted to the internal space of their respective cavities. Since the cold plate body 111 serves as part of the wall of the two cavities, the heat is quickly transferred to the cold plate body 111. The heat dissipation channels 1111 inside the cold plate body 111 carry away the absorbed heat. This achieves heat dissipation for the drive board 51 and filter board 52.

[0111] This design allows the cold plate body 111 to simultaneously dissipate heat from the circuit boards in both cavities, significantly improving heat dissipation efficiency compared to traditional independent heat dissipation methods. On one hand, the large heat dissipation surface of the cold plate body 111 can fully contact the heat sources in both cavities, quickly absorbing heat. On the other hand, the shared heat dissipation channel 1111 design reduces the need for redundant heat dissipation structures 11, lowering costs and the overall size of the control box 100. Furthermore, the unified heat dissipation system facilitates later maintenance and management, ensuring that the drive board 51 and filter board 52 always operate in a suitable temperature environment, guaranteeing the stable operation of the frequency converter module 5, and thus improving the reliability and service life of the entire control box 100.

[0112] In some embodiments, such as Figure 14 and Figure 15 As shown, the electrical control box 100 also includes a power terminal block 6 for connecting an external power cord. The power terminal block 6 further optimizes the electrical connection and safety performance of the electrical control box 100.

[0113] Specifically, the power connector 6 is installed on the heat dissipation structure 11, specifically on the cold plate body 111, and located on the side of the drive board 51 away from the main control module 2. It partially extends into the second cavity 102 and is electrically connected to the filter board 52. Since the power connector 6 is connected to municipal high-voltage power, the separation of the power connector 6 from the main control module 2 in this embodiment effectively avoids interference from high-voltage power to the weak-voltage signals of the main control module 2. In one configuration, the cold plate body 111 has a long, strip-shaped plate structure. The main control module 2 and the power connector 6 are located at both ends of the cold plate body 111 along its length, while the drive board 51 is located in the middle of the cold plate body 111, thus separating the main control module 2 and the power connector 6.

[0114] In some embodiments, such as Figure 14 As shown, the heat dissipation structure 11 is provided with a mounting port 1102 communicating with the third cavity 103. The mounting port 1102 is located on the side of the second cavity 102 away from the first cavity 101. The power connector 6 is installed at the mounting port 1102 and is partially exposed on the side of the heat dissipation structure 11 facing away from the third cavity 103. For example, as shown... Figure 15 As shown, the power connector 6 includes an insulating base 61 and a conductive post 62. The insulating base 61 is connected to the heat dissipation structure 11 and seals the mounting port 1102, serving as insulation and fixation. The conductive post 62 passes through the insulating base 61, with one end extending into the third cavity 103 and connecting to the filter plate 52, and the other end exposed on the surface of the insulating base 61 facing away from the third cavity 103, for connecting an external power cord.

[0115] To further ensure safety, the first housing 1 is also equipped with a terminal block protective shell 15. The terminal block protective shell 15 is connected to the heat dissipation structure 11, specifically to the cold plate body 111, and is located on the side of the second cavity 102 away from the first cavity 101. A power cord outlet 1501 is provided at its bottom. The terminal block protective shell 15 prevents accidental contact with the power terminal block 6, avoiding the risk of electric shock, and also serves to secure and protect the power cord.

[0116] In some embodiments, the control box 100 further includes an independently configured central module, a second housing, and a central communication line. The central module is installed in the second housing and is mainly responsible for the data acquisition, processing, and transmission of electronic devices such as sensors and electronic valves in the outdoor unit of the HVAC equipment, and transmits the data to the main control module for further processing. One end of the central communication line is electrically connected to the central module, and the other end extends into the first cavity 101 and is electrically connected to the communication interface module 212 of the main control module 2, realizing data transmission between the two.

[0117] In terms of wiring design, the first enclosure 112 and the second enclosure 113 are arranged at intervals in the vertical direction and cooperate with the cold plate body 111 to define the cable passage 106. The central communication line enters the first cavity 101 through the cable passage 106 and is electrically connected to the main control module 2. This design makes the wiring more organized and avoids messy and tangled cables. The cable passage 106 extends through the opposite sides of the first box 1 along its extension direction, forming the first cable passage 1061 and the second cable passage 1062.

[0118] The communication interface module 212 includes a central interface and a peripheral interface, with the central interface positioned closer to the second cable tray 1062 than the peripheral interface. The peripheral communication cable of the external device enters the cable tray 106 via the first cable tray 1061 and is electrically connected to the peripheral interface; the central communication cable enters the cable tray 106 via the second cable tray 1062 and is electrically connected to the central interface. This layout clearly separates cables for different functions, reduces mutual interference between signals, and improves the overall signal transmission stability and reliability of the control box 100.

[0119] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electrical control box, characterized in that, include: The first box body has a first cavity; The main control module is located in the first cavity; as well as Main control support frame; among which, The main control module includes: The main control board has at least one interactive module; and The main control power supply board is electrically connected to the main control board; The main control board and the main control power board are stacked together, and the main control power board is installed in the first cavity through the main control support frame.

2. The electrical control box according to claim 1, characterized in that, The main control board and the main control power board are stacked along the depth direction of the first cavity, and the main control board is closer to the opening of the first cavity than the main control power board.

3. The electrical control box according to claim 2, characterized in that, The electronic components on the main control power board are located on the side of the main control power board facing the opening of the first cavity. The electronic components on the main control board are located on the side of the main control board facing the opening of the first cavity.

4. The electrical control box according to claim 2, characterized in that, The main control power board is equipped with a rectifier and filter circuit. The main control board covers the rectifier and filter circuit. The at least one interactive module is located on the side of the main control board that is away from the rectifier and filter circuit and is exposed in the opening of the first cavity.

5. The electrical control box according to claim 4, characterized in that, The main control support frame is provided with a cavity for accommodating the main control power board.

6. The electrical control box according to claim 5, characterized in that, The electrical control box also includes a first latch, which is connected to the side wall of the receiving cavity or the main control power board. The main control power board is fastened to the receiving cavity by the first latch.

7. The electrical control box according to claim 6, characterized in that, The main control power board is provided with a first positioning hole; The bottom wall of the receiving cavity is provided with a first positioning post, which passes through the first positioning hole.

8. The electrical control box according to claim 5, characterized in that, The electrical control box also includes a first fastener. The outer periphery of the main control support frame is provided with a connecting block. The connecting block is provided with a first connecting hole. The bottom wall of the first cavity is provided with a first connecting post. The first connecting post extends toward the first connecting hole and is connected to the connecting block through the first fastener.

9. The electrical control box according to claim 8, characterized in that, The connecting block is also provided with a second positioning hole located on one side of the first connecting hole, and the bottom wall of the first cavity is also provided with a second positioning post, which passes through the second positioning hole.

10. The electrical control box according to claim 5, characterized in that, The electrical control box also includes thermal adhesive, which fills the receiving cavity and covers at least a portion of the main control power board.

11. The electrical control box according to claim 1, characterized in that, The electrical control box also includes a second fastener and a protective cover. The protective cover is disposed in the first cavity and covers the main control board. The protective cover is provided with a positioning groove. The main control board is also provided with a second connection hole. At least one first positioning element protrudes from the inner wall of the first cavity. The first positioning element includes: A positioning rib, protruding from the sidewall of the first cavity and extending along the depth direction of the first cavity, is used to mate with the positioning groove; and The second connecting post is located on one side of the positioning rib. One end of the second connecting post is connected to the bottom wall of the first cavity, and the other end extends toward the second connecting hole and is connected to the main control board through the second fastener.

12. The electrical control box according to claim 11, characterized in that, The main control board is also provided with a third positioning hole; The first positioning element further includes: The third positioning post is located on one side of the second connecting post. One end of the third positioning post is connected to the bottom wall of the first cavity, and the other end passes through the third positioning hole.

13. The electrical control box according to claim 2, characterized in that, The electrical control box also includes: A protective cover is disposed in the first cavity and covers the main control board. The protective cover has at least one window for exposing the at least one interactive module.

14. The electrical control box according to claim 13, characterized in that, The electrical control box also includes a second hook, which is connected to the protective cover or the main control board. The protective cover is fastened to the main control board by the second hook.

15. The electrical control box according to claim 14, characterized in that, The second hook is connected to the side of the protective cover facing the main control board. The second hook hooks onto the edge of the base plate of the main control board to fasten the protective cover to the main control board. Alternatively, the second hook is connected to the side of the main control board facing the protective cover, and the second hook hooks onto the inner wall of the protective cover to fasten the protective cover to the main control board.

16. The electrical control box according to claim 13, characterized in that, The inner wall of the first cavity is provided with at least one first positioning member, and the edge of the protective cover facing the main control board is provided with a rim, and the rim is provided with a positioning groove for cooperating with the first positioning member.

17. The electrical control box according to claim 16, characterized in that, Four first positioning components are provided, and the four first positioning components are respectively located at the four corners of the bottom wall of the first cavity.

18. The electrical control box according to claim 1, characterized in that, The at least one interactive module includes one or more of an inspection module, a storage interface module, and a communication interface module.

19. The electrical control box according to claim 13, characterized in that, The interaction module includes a communication interface module, and the window includes a first window for displaying the communication interface module.

20. The electrical control box according to claim 19, characterized in that, The first viewing window is located at the bottom edge of the protective cover.

21. The electrical control box according to claim 19, characterized in that, The interactive module also includes an inspection module, and the window also includes a second window for displaying the inspection module; And / or, the interaction module further includes a storage interface module, and the window further includes a third window for displaying the storage interface module.

22. The electrical control box according to claim 13, characterized in that, The protective cover has a clearance cavity on the side facing the main control board, which is used to avoid electronic components on the main control board.

23. The electrical control box according to claim 22, characterized in that, The interaction module also includes a storage interface module, and the sidewall of the avoidance cavity has a third window for exposing the storage interface module.

24. The electrical control box according to claim 23, characterized in that, The protective cover has an avoidance groove on the side facing away from the main control board, and the third window connects the avoidance groove and the avoidance cavity.

25. The electrical control box according to any one of claims 1 to 24, characterized in that, The first housing includes: Heat dissipation structure; and The first lid, in conjunction with the heat dissipation structure, forms the first cavity and is movably connected to the opening of the first cavity.

26. The electrical control box according to claim 25, characterized in that, The top edge of the first lid is rotatably connected to the heat dissipation structure, and the first cavity can be opened or closed by flipping the first lid in the vertical direction.

27. The electrical control box according to claim 26, characterized in that, The heat dissipation structure includes: The main body of the cold plate is plate-shaped and has heat dissipation channels; and The first enclosure is connected to the main body of the cold plate; The first box cover, the first enclosure, and the cold plate body cooperate to form the first cavity.

28. The electrical control box according to claim 26, characterized in that, The heat dissipation structure includes: Cold plate body; and The first enclosure panel is an integral structure with the main body of the cold plate; The first box cover, the first enclosure, and the cold plate body cooperate to form the first cavity.

29. The electrical control box according to claim 27 or 28, characterized in that, The first housing also includes a second cover and a third cover. The second cover mates with one side of the heat dissipation structure to form a second cavity, and the third cover mates with the other side of the heat dissipation structure to form a third cavity. The heat dissipation structure has a first opening that connects the first cavity and the second cavity. The electrical control box also includes a frequency converter module, a power connection structure, and electrical connection wires. The frequency converter module includes a drive board and a filter board. The drive board is located in the second cavity, and the filter board is located in the third cavity. The power connection structure passes through the first opening, and its two ends are respectively connected to the drive board and the filter board. The electrical connection wires extend from the second cavity to the first cavity to electrically connect the drive board and the main control module.

30. The electrical control box according to claim 1, characterized in that, The electrical control box also includes a central module, a second box body, and a central communication line. The second box body is independently set up from the first box body. The central module is located in the second box body. One end of the central communication line is electrically connected to the central module, and the other end extends into the first cavity and is electrically connected to the main control board.

31. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, The HVAC equipment includes a housing and an electrical control box as described in any one of claims 1 to 30, wherein the electrical control box is disposed within the housing.

32. The HVAC equipment according to claim 31, characterized in that, The housing is provided with an inspection port; the electrical control box is located at the inspection port, wherein the first cavity is disposed facing the inspection port.

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