Junction boxes, electrical control box assemblies and HVAC equipment

Abstract

This application provides a junction box, an electrical control box assembly, and HVAC equipment. The junction box is applied to the electrical control box assembly and includes a junction box body, a high-voltage terminal block, and a low-voltage terminal block. The junction box body has a wiring cavity and a first side wall and a second side wall located on opposite sides of the wiring cavity. The first side wall has a high-voltage outlet communicating with the wiring cavity and used for high-voltage connection wires to exit, and the second side wall has a low-voltage outlet communicating with the wiring cavity and used for low-voltage connection wires to exit. The high-voltage terminal block is located inside the wiring cavity and adjacent to the high-voltage outlet, and is used to connect high-voltage connection wires. The low-voltage terminal block is located inside the wiring cavity and adjacent to the low-voltage outlet, and is used to connect low-voltage connection wires. The high-voltage outlet and the low-voltage outlet are offset in the height direction of the junction box body. Through the above arrangement, the high-voltage and low-voltage circuits are physically separated, avoiding cross-wiring of high-voltage and low-voltage circuits within the junction box, thereby reducing electromagnetic interference from high-voltage to low-voltage circuits.

Description

Technical Field

[0001] This application relates to the field of water heater technology, and more particularly to a junction box, electrical control box assembly, and heating and ventilation equipment. Background Technology

[0002] In related technologies, junction boxes are typically used to centrally manage the electrical connections of the control box, including both high-voltage and low-voltage wires. However, the intertwining of high-voltage and low-voltage wires within the junction box can easily cause electromagnetic interference, affecting the stable operation of the control box components and increasing the risk of malfunction. Utility Model Content

[0003] This application provides a junction box, an electrical control box assembly, and a heating and ventilation device, aiming to improve the problem of mutual interference between high-voltage and low-voltage circuits in the junction box.

[0004] In a first aspect, embodiments of this application provide a junction box, which is applied to an electrical control box assembly, and the junction box includes: The junction box has a wiring cavity and a first side wall and a second side wall located on opposite sides of the wiring cavity. The first side wall has a high-voltage outlet that communicates with the wiring cavity and is used for the output of high-voltage connection wires. The second side wall has a low-voltage outlet that communicates with the wiring cavity and is used for the output of low-voltage connection wires. A high-voltage terminal block, located within the wiring cavity and adjacent to the high-voltage outlet, is used to connect the high-voltage connection line; and A low-voltage terminal block is located inside the wiring cavity and adjacent to the low-voltage outlet, and is used to connect the low-voltage connection cable; The high-voltage outlet and the low-voltage outlet are offset in the height direction of the junction box.

[0005] In some embodiments, the high-voltage outlet is located above the low-voltage outlet, and the high-voltage terminal block is located above the low-voltage terminal block.

[0006] In some embodiments, the high-voltage terminal block includes a first terminal block for connecting the main power line, and a cable passage is formed between the first sidewall, the first terminal block, and the side of the low-voltage terminal block opposite the second sidewall. The junction box also includes a bottom wall connected to the bottom of the first side wall and the second side wall. The bottom wall is provided with a high-voltage inlet that communicates with the wire passage. The high-voltage inlet is positioned opposite the first terminal block and is used to supply the main power line.

[0007] In some embodiments, the power terminal block further includes a second terminal block for connecting a power control line, the second terminal block being located on the side of the first terminal block opposite to the first sidewall.

[0008] In some embodiments, the low-voltage terminal block includes a third terminal block and a fourth terminal block spaced apart along the height of the junction box. The third terminal block is located adjacent to the low-voltage outlet and is used to connect the signal line of the electrical control box assembly. The fourth terminal block is located below the third terminal block and is used to connect the signal line of an external device.

[0009] In some embodiments, the junction box body has a connecting boss protruding on the side facing the wiring cavity, and the third terminal block is disposed on the connecting boss, so that the third terminal block and the fourth terminal block form a height difference in the thickness direction of the junction box body.

[0010] In some embodiments, the bottom wall of the junction box is also provided with a low-voltage inlet, which is positioned opposite to the fourth terminal block and is used to supply signal lines for external devices.

[0011] In some embodiments, a first wiring clip is also included, which is connected to the junction box and defines a first wiring space for limiting the high-voltage connection wire.

[0012] In some embodiments, a second wiring clip is also included, which is connected to the junction box and defines a second wiring space for limiting the low-voltage connection wire.

[0013] In some embodiments, the junction box body is provided with connecting lugs on at least the first sidewall and the second sidewall, and the connecting lugs extend into the wiring cavity; The junction box also includes a junction box cover and a connector. The junction box cover fits onto the junction box body and cooperates with the junction box body to form the wiring cavity. The connector passes through the junction box cover and the connecting ear to fix the junction box cover to the junction box body.

[0014] In some embodiments, a enclosure panel is also included, which is connected to the inner wall of the junction box and circumferentially connected to the connecting lug, such that the enclosure panel, the connecting lug, and the junction box form an enclosure space, and the connector extends into the enclosure space.

[0015] In some embodiments, a grounding terminal block is also included, which is connected to the outer wall of the junction box and is used to connect the grounding wire passing through the power outlet.

[0016] In some embodiments, a wiring clip is also included, which is disposed at the high-voltage inlet and / or the high-voltage outlet and / or the low-voltage inlet and / or the low-voltage outlet. The wiring clip defines a wiring space, and the inner wall of the wiring clip is provided with a limiting protrusion extending into the wiring space to limit the wire bundle in the wiring space. A positioning groove is formed on the outer peripheral wall of the cable routing buckle and the positioning groove extends along the circumference of the cable routing buckle. The positioning groove cooperates with the inner peripheral wall of the corresponding cable inlet and / or cable outlet.

[0017] In some embodiments, a mounting bracket is also included, which is connected to the outer wall of the junction box body for mounting the junction box.

[0018] Secondly, embodiments of this application also provide an electronic control box assembly, the electronic control box assembly comprising: Electrical control box; and As described above, the junction box is electrically connected to the electrical control box.

[0019] Thirdly, embodiments of this application also provide a heating, ventilation, and air conditioning (HVAC) device, the HVAC device comprising: Indoor unit; The outdoor unit forms a loop with the indoor unit; and As described above, the electrical control box assembly is located inside the indoor unit.

[0020] Based on the above embodiments, this application achieves physical separation of high-voltage and low-voltage connection lines by setting the high-voltage and low-voltage output ports on the opposite first and second side walls of the junction box body, respectively, and staggering them in the height direction. This increases the spatial distance between high-voltage and low-voltage lines, effectively avoids cross wiring of high-voltage and low-voltage lines in the junction box, thereby reducing electromagnetic interference of high-voltage lines to low-voltage lines, improving the reliability of signal transmission, and further improving the operational stability of the electrical control box components. Attached Figure Description

[0021] 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 these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the junction box body in one embodiment of this application; Figure 2This is an exploded view of the junction box in one embodiment of this application; Figure 3 This is a schematic diagram of the junction box in one embodiment of this application; Figure 4 for Figure 2 A magnified view of a portion of point A in the middle.

[0023] Explanation of reference numerals in the attached figures: 100. Junction box; 10. Junction box body; 10a. Wiring cavity; 10b. Wiring passage; 11. First side wall; 12. Second side wall; 13. High-voltage outlet; 14. Low-voltage outlet; 15. High-voltage inlet; 16. Low-voltage inlet; 17. Connecting boss; 18. Connecting lug; 181. First connecting hole; 19. Bottom wall; 20. High-voltage terminal block; 21. First terminal block; 22. Second terminal block; 30. Low-voltage terminal block; 31. Third terminal block; 32. Fourth terminal block; 40. First wiring clip; 50. Second wiring clip; 60. Junction box cover; 61. Second connecting hole; 70. Enclosure; 80. Grounding terminal block; 90. Wiring clip; 901. Limiting protrusion; 902. Positioning groove; 91. First cable tie; 92. Second cable tie; 93. Mounting bracket. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] 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 heat pump water heaters, air conditioners, and ventilation systems. These devices are widely used in residential, commercial, and industrial settings.

[0026] In this embodiment, a heat pump water heater is used as an example of a heating and ventilation system. A heat pump water heater is a device that transfers heat through the physical state change of a heat exchange medium and is used to heat water. It is widely used in residential and commercial buildings and can provide heating and other functions, providing users with a comfortable indoor environment.

[0027] A heat pump water heater consists of an indoor unit, an outdoor unit, and an electrical control box assembly. The indoor and outdoor units are connected by pipes, forming a closed-loop circulation system that allows the heat exchange medium to flow within this loop, thereby transferring heat. The electrical control box assembly, as the control module of the heat pump water heater, is responsible for controlling the operating parameters (such as operating mode and water temperature adjustment) and the communication functions of various components, ensuring efficient and stable operation. Furthermore, the electrical control box assembly is located inside the indoor unit. This design not only avoids the impact of harsh outdoor environments on the assembly, reducing the risk of electric shock or short circuits and improving stability and reliability, but also facilitates user adjustments to the operating parameters and enhances the convenience of maintenance and repair.

[0028] In one embodiment, the electrical control box assembly includes an electrical control box (not shown) and a junction box 100.

[0029] The electrical control box, as the main component realizing the functions of the electrical control box assembly, is the core control component in a heat pump water heater. It is responsible for controlling the operation of the heat pump water heater and the communication functions of various components. Understandably, the electrical control box contains various circuit modules (such as filter circuit modules, drive circuit modules, etc.). These various circuit modules are electrically connected to each component through electrical connection wires to ensure that the electrical control box can work stably.

[0030] Junction box 100 is a component used for centralized management of wiring harnesses, enabling centralized management of the electrical connection lines of the electrical control box. This setup reduces wiring clutter, makes the overall wiring clear and orderly, improves wiring efficiency, and also helps improve maintenance efficiency. The electrical connection lines include power supply lines and signal lines. Power supply lines typically carry a larger current to provide power and are classified as high-voltage, while signal lines typically carry a smaller current to transmit signals and are classified as low-voltage. However, the simultaneous distribution of high-voltage and low-voltage circuits within junction box 100 can easily cause electromagnetic interference, affecting the stable operation of the electrical control box components.

[0031] To improve the above issues, please refer to Figure 1 In one embodiment, the junction box 100 includes a junction box body 10, a high-voltage terminal block 20, and a low-voltage terminal block 30.

[0032] The junction box body 10 serves as the main structure of the junction box 100. The junction box body 10 is an open, box-shaped structure with an internal wiring cavity 10a. The wiring cavity 10a provides space for wiring structures and electrical connection wires. The junction box body 10 is typically made of metal to provide good mechanical strength and stability, and also to ensure conductivity for connecting ground wires. The junction box body 10 also has dimensions in the width direction (e.g., ...). Figure 1In the X direction of the junction box 10a, there are first sidewalls 11 and second sidewalls 12 located on opposite sides of the junction box 10a. The first sidewall 11 has a high-voltage outlet 13, which communicates with the junction box 10a and is used for supplying high-voltage connection wires. The second sidewall 12 has a low-voltage outlet 14, which communicates with the junction box 10a and is used for supplying low-voltage connection wires. Understandably, the high-voltage connection wires can be connected to the filter circuit module of the control box through the high-voltage outlet 13 to supply power to the control box and filter the electrical signals; the low-voltage connection wires can be connected to the circuit module of the control box through the high-voltage outlet 13 to provide communication signals to the circuit module. The high-voltage outlet 13 and the low-voltage outlet 14 are located in the height direction of the junction box 10 (i.e., in the X direction). Figure 1 The Z-direction is offset. This setting separates high-voltage and low-voltage circuits, effectively reducing electromagnetic interference from high-voltage to low-voltage circuits, avoiding signal interference caused by line crossings, and helping to improve the reliability of signal transmission and the stability of the control box operation.

[0033] The high-voltage terminal block 20 is disposed within the wiring cavity 10a. The high-voltage terminal block 20 is used to connect high-voltage connection wires and is positioned adjacent to the high-voltage outlet 13. This arrangement shortens the distance between the high-voltage terminal block 20 and the high-voltage outlet 13, facilitates wire routing, optimizes the wiring path, avoids detours in the wiring cavity 10a for the high-voltage connection wires, and makes wiring operations more convenient.

[0034] The low-voltage terminal block 30 is disposed within the wiring cavity 10a. The low-voltage terminal block 30 is used to connect low-voltage connection cables and is positioned adjacent to the low-voltage outlet 14. This arrangement shortens the distance between the low-voltage terminal block 30 and the low-voltage outlet 14, facilitating cable routing, optimizing the wiring path, and avoiding circuitous wiring of the low-voltage connection cables within the wiring cavity 10a, thus making wiring operations more convenient. Simultaneously, it reduces the length of the signal transmission path, lowers signal transmission losses, and improves signal transmission efficiency.

[0035] Understandably, because the high-voltage outlet 13 and the low-voltage outlet 14 are offset in the height direction of the junction box 10, that is, the high-voltage terminal block 20 and the low-voltage terminal block 30 are offset in the height direction of the junction box 10, the high-voltage and low-voltage circuits can be effectively separated in the height direction, further reducing electromagnetic interference from the high-voltage circuit to the low-voltage circuit and improving the reliability of signal transmission.

[0036] Please see Figure 1In one embodiment, the high-voltage outlet 13 is located above the low-voltage inlet 16, that is, the high-voltage terminal block 20 is located above the low-voltage terminal block 30. This arrangement effectively separates high-voltage and low-voltage circuits, reducing electromagnetic interference. Furthermore, since maintenance personnel typically operate from the front when wiring or maintaining the junction box 100, their hand movements naturally cover the upper and lower areas. This arrangement also avoids the risk of electric shock caused by maintenance personnel having to cross high-voltage lines when operating low-voltage circuits, reducing the possibility of accidental contact with high-voltage lines and improving safety.

[0037] Please see Figure 1 In one embodiment, the high-voltage terminal block 20 includes a first terminal block 21 for connecting the main power line, which is the main power supply line providing power support to the electrical control box assembly. A wiring channel 10b is formed between the first sidewall 11, the high-voltage terminal block 20, and the low-voltage terminal block 30 on the side opposite to the second sidewall 12 for wiring. The junction box body 10 also includes a bottom wall 19 disposed between the first sidewall 11 and the second sidewall 12 and connected to the bottom of both. The bottom wall 19 has a high-voltage inlet 15, which communicates with the wiring channel 10b and is used to supply the main power line. Furthermore, the high-voltage inlet 15 is directly opposite the first terminal block 21, so that the main power line can be connected to the high-voltage terminal block 20 sequentially through the high-voltage inlet 15 and the wiring channel 10b, optimizing the wiring path of the main power line and making the wiring operation more orderly and convenient. Understandably, the main power cable enters the wiring cavity 10a from the high-voltage inlet 15, and connects to the high-voltage terminal block 20 through the cable passage 10b. The high-voltage connection cable, after being transferred through the high-voltage terminal block 20, is then led out of the junction box 10 through the high-voltage outlet 13. This arrangement simplifies the wiring of the high-voltage connection cable, making the wiring more standardized, reducing the messy state of the high-voltage connection cable, and improving the neatness of the junction box 100; it also allows for a more compact internal layout of the junction box 100.

[0038] Since the main power supply line includes a live wire, a neutral wire, and a ground wire, the first terminal block 21 is set as a three-position terminal block and connected to the live wire, neutral wire, and ground wire respectively, making the wiring more reasonable.

[0039] Please see Figure 1 In one embodiment, the junction box 100 further includes a grounding terminal block 80, which is connected to the outer wall of the junction box body 10 and used to connect the grounding wire passing through the high-voltage outlet 13. To ensure that the grounding wire effectively plays its protective role, the grounding terminal block 80 needs to be made of a metal material, such as aluminum alloy. This arrangement leads the grounding wire to the outside of the junction box 100 for connection, further simplifying the internal wiring of the junction box 100, making the internal wiring neater and more orderly, and also enabling the internal layout of the junction box 100 to be more compact, which is conducive to the miniaturization of the junction box 100.

[0040] In one embodiment, the high-voltage terminal block 20 further includes a second terminal block 22 for connecting a high-voltage control line, which is the connection line for transmitting control signals to the electrical control box assembly. The second terminal block 22 is disposed on the side of the high-voltage terminal block 20 opposite to the first side wall 11, that is, the second terminal block 22 is disposed between the high-voltage terminal block 20 and the second side wall 12, and is located above the low-voltage terminal block 30. This arrangement allows for a more compact internal layout of the junction box 100, making full use of the internal space of the junction box 100, and facilitating the miniaturization of the junction box 100.

[0041] Please see Figure 1 In one embodiment, the junction box 100 further includes a first wiring clip 40, which is connected to the junction box body 10 and defines a first wiring space to limit the high-voltage connection wires. This arrangement ensures a clear and fixed path for the high-voltage connection wires, making their arrangement within the junction box 100 more organized and orderly. It reduces electromagnetic interference from the high-voltage connection wires to the low-voltage wires, reduces wiring clutter, and improves the overall neatness of the junction box 100. This embodiment does not impose specific limitations on the location or number of the first wiring clips 40. The first wiring clips 40 can be located between the high-voltage inlet 15 and the first terminal block 21, or between the high-voltage outlet 13 and the second terminal block 22. Furthermore, there can be one, two, three, four, or other numbers of the first wiring clips 40.

[0042] like Figure 1 As shown, in one embodiment, the junction box 100 further includes a first cable tie 91. The first cable tie 91 is disposed on the outer wall of the junction box body 10 near the high-voltage outlet 13, and is used to bundle the high-voltage connection wires to prevent them from becoming tangled or scattered, making the wiring neater and more orderly. The first cable tie 91 can be made of flexible materials, such as silicone or rubber. This design allows for flexible adjustment of the binding tightness according to the number of wires, making it convenient to use; it also prevents damage to the wires, thus protecting them.

[0043] Please see Figure 1In one embodiment, the low-voltage junction box 30 includes a third junction box 31 and a fourth junction box 32 spaced apart along the height of the junction box body 10. The third junction box 31 is located adjacent to the low-voltage outlet 14 and is used to connect the signal lines of the electrical control box assembly to realize the communication function of the various components in the electrical control box assembly. The fourth junction box 32 is located below the third junction box 31 and is used to connect the signal lines of external devices to realize the communication function between the electrical control box assembly and external devices. This arrangement allows for a more compact internal layout of the junction box 100, making full use of the internal space of the junction box 100 and facilitating the miniaturization of the junction box 100.

[0044] Please see Figure 1 In one embodiment, a connecting boss 17 protrudes from the side of the junction box 10 facing the wiring cavity 10a, and a third terminal block 31 is disposed on the connecting boss 17, so that the third terminal block 31 and the fourth terminal block 32 form a height difference in the thickness direction of the junction box 10. This arrangement facilitates the routing of signal lines on the fourth terminal block 32, avoids electromagnetic interference between the signal lines on the fourth terminal block 32 and the signal lines on the third terminal block 31, and improves the stability of signal transmission.

[0045] It should be understood that the configuration of the connecting boss 17 in the embodiments of this application is not fixed. For example, the connecting boss 17 may be formed by the wall of the junction box 10 protruding into the wiring cavity 10a, that is, the connecting boss 17 and the junction box 10 are integral components, and the connecting boss 17 may be formed by die casting or other processes when molding the junction box 10. Alternatively, the connecting boss 17 may also be a separate component provided on the inner wall of the junction box 10, that is, the connecting boss 17 and the junction box 10 are separate components, and the connecting boss 17 may be provided on the junction box 10 by welding, screwing or other methods.

[0046] Please see Figure 1 In one embodiment, the bottom wall 19 of the junction box 10 is further provided with a low-voltage inlet 16, which communicates with the junction cavity 10a and is used for the signal line input of external devices. Understandably, the signal line of an external device (such as a fiber optic device) can be connected to the fourth terminal block 32 through the low-voltage inlet 16. The low-voltage inlet 16 and the fourth terminal block 32 are positioned opposite each other, thus allowing the signal line to enter the junction cavity 10a and connect to the fourth terminal block 32, optimizing the signal line routing path, shortening the signal line length, and making the wiring operation more orderly and convenient. Furthermore, the low-voltage inlet 16 and the high-voltage inlet 15 are spaced apart, further separating high-voltage and low-voltage signals, further reducing electromagnetic interference from high-voltage to low-voltage signals, and improving the reliability of signal transmission.

[0047] Please see Figure 1In one embodiment, the junction box 100 further includes a second wiring clip 50, which is connected to the junction box body 10 and defines a second wiring space for limiting the low-voltage connection wires. This arrangement ensures that the path of the low-voltage connection wires is clear and fixed, making the arrangement of the low-voltage connection wires within the junction box 100 more neat and orderly, reducing wiring clutter and improving the cleanliness of the junction box 100. In this embodiment, the location and number of the second wiring clips 50 are not specifically limited. The second wiring clips 50 can be located between the low-voltage inlet 16 and the fourth terminal block 32, or between the low-voltage outlet 14 and the third terminal block 31; and the number of second wiring clips 50 can be one, two, three, four, or other quantities.

[0048] like Figure 1 As shown, in one embodiment, the junction box 100 further includes a second cable tie 92. The second cable tie 92 is disposed on the outer wall of the junction box body 10 near the low-voltage outlet 14, and is used to bundle the low-voltage connection wires to prevent them from becoming tangled or scattered, making the wiring neater and more orderly. The second cable tie 92 can be made of flexible materials, such as silicone or rubber. This design allows for flexible adjustment of the binding tightness according to the number of wires, making it convenient to use; it also prevents damage to the wires, thus protecting them.

[0049] See also Figure 2 and Figure 3 In one embodiment, the junction box body 10 is provided with connecting ears 18 on at least the first sidewall 11 and the second sidewall 12. The connecting ears 18 extend into the wiring cavity 10a and are provided with a first connecting hole 181. The connecting ears 18 may also be provided on the bottom wall 19 or the top wall of the junction box body 10, but this embodiment does not impose specific limitations on this. The junction box 100 also includes a junction box cover 60 and a connector (not shown in the figure). The junction box cover 60 is provided with a second connecting hole 61. The junction box cover 60 covers the junction box body 10 and cooperates with the junction box body 10 to form the wiring cavity 10a. This effectively prevents external contaminants such as dust and moisture from entering the wiring cavity 10a, improving the safety and reliability of the junction box 100. Understandably, when the junction box cover 60 is closed on the junction box body 10, the first connecting hole 181 and the second connecting hole 61 correspond one-to-one. The connector passes through the second connecting hole 61 and the first connecting hole 181 in sequence to fix the junction box cover 60 and the junction box body 10. In this embodiment, the type of connector is not specifically limited; the connector can be a screw connector, a snap-fit ​​connector, etc.

[0050] Please see Figure 2In one embodiment, the junction box 100 further includes a surrounding plate 70, which is connected to the inner wall of the junction box body 10 and circumferentially connected to the connecting lug 18, so that the surrounding plate 70, the connecting lug 18, and the junction box body 10 form an enclosed space, into which the connector extends. This arrangement prevents debris generated during connection from falling onto the terminal block and causing a short circuit, thereby improving the safety and reliability of the junction box 100.

[0051] Please see Figure 2 and Figure 4 In one embodiment, the junction box 100 further includes a wiring clip 90, which is disposed at the high-voltage inlet 15 and / or the high-voltage outlet 13 and / or the low-voltage inlet 16 and / or the low-voltage outlet 14. That is, the wiring clip 90 can be disposed at any one, any two, any three, or all four of the high-voltage inlet 15, high-voltage outlet 13, low-voltage inlet 16, and low-voltage outlet 14. The wiring clip 90 defines a wiring space, and its inner wall has a limiting protrusion 901 extending into the wiring space to limit the wire harness within the space and prevent it from coming out. This embodiment does not impose specific limitations on the form of the wiring clip 90; it can be made of flexible materials such as rubber or silicone to avoid scratching the wire harness.

[0052] like Figure 4 As shown, in one embodiment, a positioning groove 902 is formed on the outer peripheral wall of the cable routing clip 90, and the positioning groove 902 extends circumferentially along the cable routing clip 90. The positioning groove 902 cooperates with the inner peripheral wall of the corresponding inlet and / or outlet to install the cable routing clip 90 at the corresponding inlet and / or outlet, thereby fixing the cable routing clip 90 to the junction box 10. This design simplifies connection and speeds up installation.

[0053] See also Figures 1 to 3 In one embodiment, the junction box 100 further includes a mounting bracket 93, which is connected to the outer wall of the junction box body 10 and used to mount the junction box 100. This embodiment does not specifically limit the location of the mounting bracket 93; it can be located on the outer wall of the first side wall 11 and the second side wall 12 of the junction box body 10, or on the outer wall of the top wall of the junction box body 10. The junction box 100 is mounted inside the indoor unit via the mounting bracket 93, improving the installation stability of the junction box 100.

[0054] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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 accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0058] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A junction box, characterized in that, Applied to electrical control box assembly, the junction box includes: The junction box has a wiring cavity and a first side wall and a second side wall located on opposite sides of the wiring cavity. The first side wall has a high-voltage outlet that communicates with the wiring cavity and is used for the output of high-voltage connection wires. The second side wall has a low-voltage outlet that communicates with the wiring cavity and is used for the output of low-voltage connection wires. A high-voltage terminal block, located within the wiring cavity and adjacent to the high-voltage outlet, is used to connect the high-voltage connection line; and A low-voltage terminal block is located inside the wiring cavity and adjacent to the low-voltage outlet, and is used to connect the low-voltage connection cable; The high-voltage outlet and the low-voltage outlet are offset in the height direction of the junction box.

2. The junction box according to claim 1, characterized in that, The high-voltage outlet is located above the low-voltage outlet, and the high-voltage terminal block is located above the low-voltage terminal block.

3. The junction box according to claim 2, characterized in that, The high-voltage terminal block includes a first terminal block for connecting the main power line, and a cable passage is formed between the first sidewall, the first terminal block, and the side of the low-voltage terminal block opposite to the second sidewall. The junction box also includes a bottom wall connected to the bottom of the first side wall and the second side wall. The bottom wall is provided with a high-voltage inlet that communicates with the wire passage. The high-voltage inlet is positioned opposite the first terminal block and is used to supply the main power line.

4. The junction box according to claim 3, characterized in that, The high-voltage terminal block also includes a second terminal block for connecting high-voltage control lines, the second terminal block being located on the side of the first terminal block away from the first sidewall.

5. The junction box according to claim 2, characterized in that, The low-voltage terminal block includes a third terminal block and a fourth terminal block spaced apart along the height of the junction box. The third terminal block is located adjacent to the low-voltage outlet and is used to connect the signal line of the electrical control box assembly. The fourth terminal block is located below the third terminal block and is used to connect the signal line of an external device.

6. The junction box according to claim 5, characterized in that, The junction box body has a connecting boss protruding on one side facing the wiring cavity, and the third terminal block is disposed on the connecting boss, so that the third terminal block and the fourth terminal block form a height difference in the thickness direction of the junction box body.

7. The junction box according to claim 5, characterized in that, The bottom wall of the junction box is also provided with a low-voltage inlet, which is positioned opposite to the fourth terminal block and is used to supply signal lines for external devices.

8. The junction box according to any one of claims 1-7, characterized in that, It also includes a first wiring clip, which is connected to the junction box and defines a first wiring space to limit the high-voltage connection wire.

9. The junction box according to any one of claims 1-7, characterized in that, It also includes a second wiring clip, which is connected to the junction box and defines a second wiring space to limit the low-voltage connection wire.

10. The junction box according to any one of claims 1-7, characterized in that, The junction box body is provided with connecting ears on at least the first side wall and the second side wall, and the connecting ears extend into the wiring cavity; The junction box also includes a junction box cover and a connector. The junction box cover fits onto the junction box body and cooperates with the junction box body to form the wiring cavity. The connector passes through the junction box cover and the connecting ear to fix the junction box cover to the junction box body.

11. The junction box according to claim 10, characterized in that, It also includes a enclosure panel, which is connected to the inner wall of the junction box and circumferentially connected to the connecting lug, so that the enclosure panel, the connecting lug, and the junction box form an enclosure space, and the connector extends into the enclosure space.

12. The junction box according to any one of claims 1-7, characterized in that, It also includes a grounding terminal block, which is connected to the outer wall of the junction box and is used to connect the grounding wire that passes through the power outlet.

13. The junction box according to any one of claims 1-7, characterized in that, It also includes a cable routing clip, which is disposed at the high power inlet and / or the high power outlet and / or the low power inlet and / or the low power outlet. The cable routing clip defines a cable routing space, and the inner wall of the cable routing clip is provided with a limiting protrusion extending into the cable routing space to limit the wire bundle in the cable routing space. A positioning groove is formed on the outer peripheral wall of the cable routing buckle and the positioning groove extends along the circumference of the cable routing buckle. The positioning groove cooperates with the inner peripheral wall of the corresponding cable inlet and / or cable outlet.

14. The junction box according to any one of claims 1-7, characterized in that, It also includes a mounting bracket, which is connected to the outer wall of the junction box body and is used to mount the junction box.

15. An electrical control box assembly, characterized in that, include: Electrical control box; as well as The junction box as described in any one of claims 1-14, wherein the junction box is electrically connected to the electrical control box.

16. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, include: Indoor unit; The outdoor unit forms a loop with the indoor unit; and The electrical control box assembly as described in claim 15 is disposed inside the indoor unit.

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