Electrical control assembly, outdoor unit of heating, ventilation and air-conditioning apparatus, and heating, ventilation and air-conditioning apparatus

Abstract

The present application relates to the technical field of heating, ventilation and air-conditioning apparatuses. Disclosed are an electrical control assembly, an outdoor unit of a heating, ventilation and air-conditioning apparatus, and a heating, ventilation and air-conditioning apparatus. The electrical control assembly comprises a circuit board, a power device, and a heat sink, wherein the circuit board has a first surface and a second surface facing away from each other, the first surface being used for arranging a non-power device; the power device is arranged on the second surface; the heat sink is arranged on the second surface; and the power device is arranged between the circuit board and the heat sink, the heat sink being used for dissipating heat from the power device. In the electrical control assembly of the present application, by arranging the power device and the heat sink on the second surface of the circuit board, when disassembling the circuit board, operations can be performed from the first surface that faces away from the second surface, without obstruction from the heat sink, thereby facilitating the disassembly of the circuit board and improving disassembly efficiency.

Description

Electrical control components, outdoor units of HVAC equipment and HVAC equipment

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent application 202422486121.3, filed on October 14, 2024, entitled “Electrical control components, outdoor unit of HVAC equipment and HVAC equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of heating, ventilation and air conditioning (HVAC) equipment technology, and in particular to an electrical control component, an outdoor unit of HVAC equipment, and HVAC equipment. Background Technology

[0004] The heat generated by components within the control box is directly related to their lifespan. According to the Arrhenius equation, a 10°C increase in temperature generally halves the lifespan of control components. Therefore, heat dissipation for control components is crucial. Currently, most power devices rely on refrigerant cooling. Control components are typically designed with circuit boards mounted behind the refrigerant heat sink. Disassembling the control board requires avoiding the refrigerant heat sink, making disassembly inconvenient. Summary of the Invention

[0005] The purpose of this application is to at least solve the problem of inconvenient disassembly of the electronic control board. This purpose is achieved through the following technical solution:

[0006] The first aspect of this application discloses an electronically controlled assembly, comprising:

[0007] A circuit board having a first side and a second side arranged in opposite directions, the first side being used to house non-power devices;

[0008] Power devices are disposed on the second surface;

[0009] A heat sink is disposed on the second side, and the power device is disposed between the circuit board and the heat sink. The heat sink is used to dissipate heat from the power device.

[0010] The electronic control component of this application arranges the power device and heat sink on the second side of the circuit board. When disassembling the circuit board, it can be operated from the first side opposite to the second side without the obstruction of the heat sink, thereby facilitating the disassembly of the circuit board and improving the disassembly efficiency.

[0011] In addition, the electronic control component according to this application may also have the following additional technical features:

[0012] In some embodiments, the heat sink has a first mounting groove on the side facing the second surface, and the power device is at least partially mounted in the first mounting groove.

[0013] In some embodiments, the electronic control component further includes a first connector, which passes through the circuit board and is used to connect the circuit board and the heat sink. The first connector is provided with a first limiting portion that abuts against the first surface limiting portion.

[0014] In some embodiments, the electronic control assembly further includes a mounting plate located on the second surface and detachably connected to the second surface.

[0015] In some embodiments, the electronic control component further includes a second connector, which passes through the circuit board and is used to connect the circuit board and the mounting plate. The second connector is provided with a second limiting portion that abuts against the first surface limiting portion.

[0016] In some embodiments, the electronic control assembly further includes a refrigerant heat dissipation pipe disposed on the side of the radiator opposite to the second surface.

[0017] In some embodiments, the heat sink has a second mounting groove on the side opposite to the circuit board, and at least a portion of the refrigerant heat dissipation pipe is accommodated in the second mounting groove.

[0018] In some embodiments, the non-power device includes a high-voltage device and a low-voltage device, and the first surface has a high-voltage area and a low-voltage area, wherein the high-voltage device is mounted in the high-voltage area and the low-voltage device is mounted in the low-voltage area.

[0019] A second aspect of this application provides an outdoor unit for a heating, ventilation, and air conditioning system, including a housing and an electrical control assembly as described in any of the preceding claims, wherein an electrical control chamber is provided within the housing, and the electrical control assembly is installed within the electrical control chamber.

[0020] A third aspect of this application provides a heating, ventilation, and air conditioning (HVAC) system, including an indoor unit and an outdoor unit as described in any of the preceding claims, wherein the indoor unit and the outdoor unit are connected by piping. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application 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 drawings without creative effort.

[0022] Figure 1 schematically shows a structural diagram of an electronic control assembly according to an embodiment of the present application from a first perspective;

[0023] Figure 2 schematically shows a structural diagram of the electronic control assembly according to an embodiment of the present application from a second perspective;

[0024] Figure 3 schematically shows an exploded view of an electronic control assembly according to an embodiment of this application;

[0025] Figure 4 schematically shows a component layout diagram on the first surface of an electronic control assembly according to an embodiment of the present application;

[0026] Figure 5 schematically shows a component layout diagram on the second side of an electronic control assembly according to an embodiment of the present application.

[0027] Marking Description: 100. Electrical Control Components; 1. Circuit Board; 11. First Side; 12. Second Side; 2. Power Device; 21. Compressor Driver; 22. PFC Device; 23. Rectifier Bridge; 3. Heat Sink; 31. First Mounting Slot; 32. Second Mounting Slot; 4. First Connector; 5. Mounting Plate; 51. Clearing Notch; 52. Slot; 6. Second Connector; 7. Refrigerant Heat Dissipation Pipe; 71. Straight Pipe Section; 72. Bend Section; 8. Non-Power Device; 81. Capacitor Electrolyzer; 82. PFC Inductor; 83. Fan Driver; 84. Drive Controller; 85. Power Input Filter; 9. Pressure Plate; 91. Clamping Groove; 92. Snap-on. Detailed Implementation

[0028] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0029] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0030] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this application, the term "and / or" is merely a description of 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. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0032] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0033] In this application, "multiple" means two or more (including two).

[0034] In related technologies, power devices typically rely on refrigerant cooling for heat dissipation. In most heat dissipation structures, the power devices, heat sinks, and refrigerant pipes are all located on the front of the control board, which is then mounted on a mounting plate. In this arrangement, the control board is sandwiched between the mounting plate and the refrigerant pipes. When disassembling the control board, it is necessary to avoid the refrigerant pipes, which increases the difficulty of disassembly and causes inconvenience to the disassembly of the control board.

[0035] In view of this, this embodiment provides an electronic control assembly 100, which aims to solve the above-mentioned technical problems by placing the power device 2 and the heat sink 3 on the second side 12 of the circuit board 1, so that when disassembling the circuit board 1, the operation can be performed from the first side 11 opposite to the second side 12.

[0036] As shown in Figures 1 to 5, according to an embodiment of this application, an electronic control assembly 100 is proposed. The electronic control assembly 100 includes a circuit board 1, a power device 2, and a heat sink 3. The circuit board 1 has a first side 11 and a second side 12 arranged opposite to each other. The first side 11 is used to house a non-power device 8, the power device 2 is disposed on the second side 12, and the heat sink 3 is disposed on the second side 12. The power device 2 is disposed between the circuit board 1 and the heat sink 3, and the heat sink is used to dissipate heat from the power device 2. The first side 11 can be considered as the front side of the circuit board 1, and correspondingly, the second side 12 is the back side of the circuit board 1. That is, both the power device 2 and the heat sink 3 are disposed on the back side of the circuit board 1. Since the heat sink 3 is disposed on the back side of the circuit board 1, there is no obstruction from the front side. Therefore, when disassembling the circuit board 1, it can be disassembled from the front side, thereby facilitating the disassembly of the circuit board 1 and improving disassembly efficiency. Power device 2 includes a compressor driver 21, a PFC device 22 (Power Factor Correction), and a rectifier bridge 23. The compressor driver 21 is a high-voltage + low-voltage device, while the PFC device 22 and rectifier bridge 23 are high-voltage devices. Since power device 2 generates a lot of heat, mounting it between circuit board 1 and heat sink 3 facilitates heat dissipation, improves heat dissipation efficiency and effect, and extends the service life of power device 2.

[0037] In some embodiments of this application, a first mounting groove 31 is provided on the side of the heat sink 3 facing the second surface 12, and the power device 2 is at least partially installed in the first mounting groove 31. There are multiple power devices 2, and multiple first mounting grooves 31 are spaced apart along the length of the heat sink 3. Each power device 2 is correspondingly installed in one of the multiple first mounting grooves 31. The first mounting grooves 31 facilitate the installation of the power devices 2, ensuring reliable and secure installation, and also increase the contact area between the power devices 2 and the heat sink 3, thereby better dissipating heat from the power devices 2 and improving heat dissipation efficiency and effect.

[0038] In some embodiments of this application, the electronic control assembly 100 further includes a first connector 4, which passes through the circuit board 1 and is used to connect the circuit board 1 and the heat sink 3. The first connector 4 has a first limiting part that abuts against the first surface 11. Specifically, the first connector 4 includes a first bolt, the first limiting part is the nut of the first bolt, the circuit board 1 has a first bolt hole, and the heat sink 3 has a second bolt hole corresponding to the first bolt hole. The first bolt passes through the first surface 11 to connect with the heat sink 3 and the circuit board 1, and the nut of the first bolt abuts against the first surface 11. To achieve a reliable connection between the heat sink 3 and the circuit board 1, multiple first bolts, first bolt holes, and second bolt holes can be provided. When installing the heat sink 3, after the power device 2 is installed into the first mounting slot 31 on the heat sink 3, the first bolt hole and the second bolt hole are aligned, and then the first bolt passes through the first bolt hole and the second bolt hole sequentially from one side of the first surface 11 of the circuit board 1, thereby connecting the heat sink 3 and the circuit board 1, which facilitates the installation and removal of the electronic control board.

[0039] In other embodiments, the heat sink 3 and the circuit board 1 can also be connected by means of slot and buckle fixing, welding, bonding, etc.

[0040] To ensure a reliable connection of the power device 2, this embodiment also includes a third connector, which includes a third bolt. The power device 2 also has a third bolt hole, and the circuit board 1 has a fourth bolt hole corresponding to the third bolt hole. To achieve a reliable connection between the power device 2 and the circuit board 1, multiple third bolts, third bolt holes, and fourth bolt holes can be provided. During installation of the power device 2, after installing it into the first mounting slot 31 on the heat sink 3, the third bolt passes sequentially through the third bolt hole and the fourth bolt hole from one side of the first surface 11, thereby connecting the power device 2 to the circuit board 1. This facilitates the installation and removal of the power device 2 while ensuring a stable connection.

[0041] In some embodiments of this application, the electronic control assembly 100 further includes a mounting plate 5, which is disposed on and detachably connected to the second surface 12. Specifically, the circuit board 1 is connected to the mounting plate 5 via a second connector 6. The second connector 6 passes through the circuit board 1 and is used to connect the circuit board 1 and the mounting plate 5. The second connector 6 has a second limiting portion that abuts against the first surface 11. The second connector 6 includes a second bolt, the second limiting portion being the nut of the second bolt, a fifth bolt hole on the circuit board 1, and a sixth bolt hole corresponding to the fifth bolt hole on the mounting plate 5. The second bolt passes through the first surface 11 to connect with the circuit board 1 and the mounting plate 5, and the nut of the second bolt abuts against and fixes against the first surface 11. To achieve a reliable connection between the circuit board 1 and the mounting plate 5, multiple second bolts, fifth bolt holes, and sixth bolt holes can be provided. The mounting plate 5 also has a clearance notch 51 to avoid the heat sink 3. When installing the control board, first install the power device 2 and the heat sink 3 onto the second side 12, then align the fifth bolt hole with the sixth bolt hole, and then use the second bolt to pass through the fifth bolt hole and the sixth bolt hole from one side of the first side 11 in sequence, thereby connecting the circuit board 1 to the mounting plate 5, which facilitates the installation and disassembly of the control board.

[0042] In other embodiments, the circuit board 1 and the mounting plate 5 can also be connected by means of slot and buckle fixing, welding, bonding, etc.

[0043] In some embodiments of this application, the electronic control assembly 100 further includes a refrigerant heat dissipation pipe 7, which is disposed on the side of the radiator 3 facing away from the second surface 12. The refrigerant heat dissipation pipe 7 can be, for example, a copper pipe. An inlet and an outlet can be formed on the refrigerant heat dissipation pipe 7, allowing refrigerant to enter the refrigerant heat dissipation pipe 7 through the inlet and to flow out through the outlet after heat exchange. The refrigerant heat dissipation pipe 7 includes straight pipe sections 71 and bent pipe sections 72. Multiple straight pipe sections 71 are spaced apart, and bent pipe sections 72 are connected to multiple straight pipe sections 71. The bent pipe sections 72 can connect multiple straight pipe sections 71 in series, parallel, or a combination of series and parallel connections. The bent pipe sections 72 can be approximately V-shaped, C-shaped, or U-shaped. By providing the refrigerant heat dissipation pipe 7, it is beneficial to extend the movement path of the refrigerant within it, thereby improving heat dissipation efficiency.

[0044] In some embodiments of this application, a second mounting groove 32 is provided on the surface of the radiator 3, and at least a portion of the refrigerant heat dissipation pipe 7 is accommodated within the second mounting groove 32. Specifically, multiple second mounting grooves 32 are spaced apart along the width direction of the radiator 3, and each second mounting groove 32 extends along the length direction of the radiator 3. The opening width of the second mounting groove 32 is not less than (greater than or equal to) the outer diameter of the refrigerant heat dissipation pipe 7, making it easy to install and remove the refrigerant heat dissipation pipe 7 from the radiator 3 through the second mounting groove 32, and the operation is convenient and quick. The second mounting groove 32 can extend through both ends of the radiator 3 along the length direction of the radiator 3, and a portion of the straight pipe portion 71 is accommodated within the second mounting groove 32. The end of the straight pipe portion 71 is flush with the end of the second mounting groove 32 or the end of the straight pipe portion 71 extends beyond the end of the second mounting groove 32. This facilitates the positioning of the refrigerant heat dissipation pipe 7 on the radiator 3 through the second mounting groove 32, and also helps to reduce the volume of the refrigerant heat dissipation pipe 7 and save space.

[0045] In this embodiment, the electronic control assembly 100 further includes a pressure plate 9. The pressure plate 9 has a clamping groove 91 extending along its length. The clamping groove 91 corresponds to the second mounting groove 32. The cooperation between the second mounting groove 32 and the clamping groove 91 further clamps the refrigerant heat dissipation pipe 7. The middle portion of the pressure plate 9 is locked to the radiator 3 by screws, and the screws lock the pressure plate 9 in place, ensuring the middle portion of the pressure plate 9 is flush with the radiator 3. The pressure plate 9 has multiple latches 92, and the mounting plate 5 has multiple slots 52 that mate with the latches 92. The pressure plate 9 is connected to the mounting plate 5 via the latches 92 and the slots 52.

[0046] In related technologies, since both the heat sink 3 and the power device 2 are located on the front of the control board, the installation space for components on the front of the control board is small, and the wiring layout is relatively messy, which is not conducive to the disassembly and repair of components.

[0047] In contrast, in some embodiments of this application, the non-power device 8 includes both high-voltage and low-voltage components. The first surface 11 has a high-voltage area and a low-voltage area, with the high-voltage components installed in the high-voltage area and the low-voltage components installed in the low-voltage area. Specifically, the high-voltage components are those that withstand voltages greater than 36V, including a capacitor electrolytic capacitor 81, a PFC inductor 82, and a power input filter 85. These components are installed in the high-voltage area. The low-voltage components include a drive controller 84, which is installed in the low-voltage area, and a fan driver 83, which is a combination of high-voltage and low-voltage components. This separation of high-voltage and low-voltage components improves the wiring layout of the components, facilitates the disassembly and maintenance of the components, and because the heat sink 3 and the power device 2 are installed on the back of the circuit board 1, the installation space on the front of the control board is larger, which facilitates the installation of components.

[0048] The second aspect of this application discloses an outdoor unit for heating, ventilation, and air conditioning (HVAC) equipment. The outdoor unit includes a housing and the aforementioned electrical control assembly 100. A partition is provided inside the housing, dividing the housing into an electrical control chamber and a fan chamber. The electrical control assembly 100 is installed within the electrical control chamber. For an understanding of the working process of the outdoor unit, please refer to relevant technologies; further details are omitted here.

[0049] The third aspect of this application discloses a heating, ventilation, and air conditioning (HVAC) system, including an indoor unit and an outdoor unit, wherein the indoor and outdoor units are connected by piping. For details regarding other components of the HVAC system and its operation, please refer to relevant technical documents; further description is omitted here.

[0050] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electronic control component, wherein, include: A circuit board having a first side and a second side arranged in opposite directions, the first side being used to house non-power devices; Power devices are disposed on the second surface; A heat sink is disposed on the second side, and the power device is disposed between the circuit board and the heat sink. The heat sink is used to dissipate heat from the power device.

2. The electronic control component according to claim 1, wherein, The heat sink has a first mounting groove on the side facing the second surface, and the power device is at least partially installed in the first mounting groove.

3. The electronic control component according to claim 2, wherein, The electronic control component further includes a first connector, which passes through the circuit board and is used to connect the circuit board and the heat sink. The first connector is provided with a first limiting part that abuts against the first surface limiting part.

4. The electronic control assembly according to any one of claims 1 to 3, wherein, The electronic control assembly also includes a mounting plate located on the second surface and detachably connected to the second surface.

5. The electronic control component according to claim 4, wherein, The electronic control component further includes a second connector, which passes through the circuit board and is used to connect the circuit board and the mounting plate. The second connector is provided with a second limiting part that abuts against the first surface limiting part.

6. The electronic control assembly according to any one of claims 1 to 3, wherein, The electronic control component also includes a refrigerant heat dissipation pipe, which is disposed on the side of the radiator opposite to the second surface.

7. The electronic control component according to claim 6, wherein, The heat sink has a second mounting groove on the side opposite to the circuit board, and at least a portion of the refrigerant heat dissipation pipe is accommodated in the second mounting groove.

8. The electronic control component according to claim 1, wherein, The non-power device includes a high-voltage device and a low-voltage device. The first surface has a high-voltage area and a low-voltage area. The high-voltage device is installed in the high-voltage area, and the low-voltage device is installed in the low-voltage area.

9. An outdoor unit for HVAC equipment, wherein, It includes a housing and an electronic control component as described in any one of claims 1 to 8, wherein an electronic control chamber is provided within the housing, and the electronic control component is installed within the electronic control chamber.

10. A heating, ventilation, and air conditioning (HVAC) device, wherein, It includes an indoor unit of HVAC equipment and an outdoor unit of HVAC equipment as described in claim 9, wherein the indoor unit of HVAC equipment and the outdoor unit of HVAC equipment are connected by pipes.

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