Electric control box and air conditioner

Abstract

The invention discloses an electric control box and an air conditioner, the electric control box comprises a PCB support and a reactor box body, one side of the PCB support is used for installing a circuit board, and the other side of the PCB support is provided with a wire holder; the box body is provided with a containing space, a first receding hole is formed in a bottom plate of the box body, the PCB support is arranged in the containing space, the wire holder penetrates through the first receding hole, the PCB support is provided with a first installation base, the electric reactor is arranged in the first installation base and connected with one end of the box body, and the first installation base is located at one end of the first receding hole. The other end, located at the first avoiding hole, of the PCB support is provided with a fixing screw hole, and the PCB support is connected with the box body through a fastener penetrating through the fixing screw hole. Therefore, through connection between the reactor and the box body and cooperation between the fixing screw holes and the fasteners, the PCB support and the box body can be locked, the impact resistance of the assembly structure of the PCB support and the box body is improved, and short circuit caused by collapse of the wire holder due to looseness or separation between the PCB support and the box body during after-sales operation can be prevented.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, and in particular to an electrical control box and an air conditioner. Background Technology

[0002] In modern refrigeration technology, air conditioners, as key devices for regulating indoor temperature and humidity, have internal structures whose rationality and safety directly affect performance and the safety of users' lives and property. The electrical control box, as one of the core components of an air conditioner, is responsible for controlling the power distribution and logical operation of the entire system; its stability and reliability are paramount. In related technologies, improper operation during after-sales installation and wiring, such as using excessive force with an electric screwdriver, can easily cause the connection between the PCB bracket and the electrical control box to loosen or even separate. This can lead to the terminal block collapsing into the electrical control box, increasing the risk of short circuits due to direct contact between the indoor and outdoor unit connection terminals and the electrical control box. This not only affects the normal operation of the equipment but may also damage it or even cause safety accidents. Summary of the Invention

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this application is to provide an electrical control box, which, through the connection between the reactor and the box body and the cooperation of the fixing screw holes and fasteners, can lock the PCB bracket and the box body together, improve the impact resistance of the PCB bracket and box body assembly structure, and prevent the PCB bracket and box body from loosening or separating during after-sales operation, which could lead to the collapse of the terminal block and cause a short circuit.

[0004] This application also proposes an air conditioner having the aforementioned electrical control box.

[0005] According to an embodiment of the first aspect of this application, the electrical control box includes: a PCB bracket, a reactor, and a box body. One side of the PCB bracket is used to mount a circuit board, and the other side of the PCB bracket is provided with a terminal block. The box body has an accommodating space, and the bottom plate of the box body has a first clearance hole. The PCB bracket is disposed in the accommodating space, and the terminal block passes through the first clearance hole. The PCB bracket has a first mounting base, and the reactor is disposed in the first mounting base and connected to one end of the box body. The first mounting base is located at one end of the first clearance hole, and the other end of the PCB bracket located at the first clearance hole is provided with a fixing screw hole. The PCB bracket is connected to the box body by a fastener passing through the fixing screw hole.

[0006] According to the electrical control box of this application, the connection between the reactor on the PCB bracket and the box body, and the connection between the other end of the PCB bracket and the box body via the fixing screw holes and fasteners on the PCB bracket, can improve the reliability and stability of the connection between the PCB bracket and the box body at both ends of the terminal block. Compared with related technologies, improper operation during after-sales installation wiring can easily lead to loosening or even separation of the connection between the PCB bracket and the electrical control box, resulting in the terminal block collapsing inward and increasing the risk of contact short circuit. In this application, the connection between the reactor and the box body, and the cooperation of the fixing screw holes and fasteners, lock the PCB bracket and the box body together, effectively improving the impact resistance of the PCB bracket and box body assembly structure. This can prevent the PCB bracket and the box body from loosening or separating due to excessive force applied by the electric screwdriver during after-sales operation, and can ensure the accuracy and stability of the terminal block's position relative to the box body, PCB bracket, and other components in the electrical control box, thereby improving the working reliability, safety, and service life of the electrical control box.

[0007] According to some embodiments of this application, the first mounting base includes: a first plate, a second plate, and two third plates. The first plate and the second plate both extend in a first direction and are spaced apart and opposite to each other in a second direction. The two third plates extend in the second direction and are spaced apart. The first direction and the second direction are orthogonal. The ends of the first plate and the second plate near the first clearance hole in the first direction are respectively connected to the ends of the two third plates opposite to each other. The first plate, the second plate, the third plates, and the surface of the PCB bracket together define a first receiving cavity suitable for accommodating the reactor.

[0008] Furthermore, the reactor is adapted to push against the third plate at one end near the first clearance hole in the first direction, and a connecting plate is provided at the other end. The connecting plate has first mating holes at both ends in the second direction, and the side plate of the housing has second mating holes that correspond one-to-one with the first mating holes. The second mating holes and the first mating holes are adapted to be engaged by fasteners.

[0009] In some embodiments, a first limiting part is provided at each of the four corners of the box body, and a second limiting part is provided at each of the four corners of the PCB bracket to engage with the first limiting part.

[0010] According to some embodiments of this application, a screw post is provided on the side of the bottom plate of the box body near the PCB bracket. The screw post is adapted to pass through the fixing screw hole to connect the box body to the PCB bracket.

[0011] Furthermore, at least a portion of the base plate of the box body is constructed of sheet metal, and the screw posts are disposed on the at least portion of the base plate.

[0012] In some embodiments, the mating gap between the bottom end of the reactor and the first mounting base is configured to be 0mm to 1mm.

[0013] According to some embodiments of this application, the electrical control box further includes: a mounting frame, the mounting frame being connected to the box body and located on the side of the box body away from the PCB bracket, at least a portion of the mounting frame covering the top of the box body, the mounting frame having a second clearance hole, and the cross-sectional area of ​​the second clearance hole being larger than the cross-sectional area of ​​the first clearance hole, so as to avoid the terminal block.

[0014] Furthermore, the mounting frame is provided with a relief protrusion that protrudes away from the box body. The relief protrusion has a second receiving cavity. The cross-sectional area of ​​the second receiving cavity is larger than the cross-sectional area of ​​the fixing screw hole. One end of the fastener passing through the fixing screw hole is adapted to extend into the second receiving cavity.

[0015] An air conditioner according to a second aspect of this application includes: the electrical control box described in the above embodiments.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is an overall schematic diagram of an air conditioner according to an embodiment of this application;

[0019] Figure 2 This is an exploded view of an air conditioner according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the installation of the electrical control box in an air conditioner according to an embodiment of this application;

[0021] Figure 4 This is an exploded view of the electrical control box according to an embodiment of this application;

[0022] Figure 5 This is a partial structural cross-sectional view of the electrical control box according to an embodiment of this application;

[0023] Figure 6 yes Figure 5 Enlarged view of a portion of point A in the middle;

[0024] Figure 7 yes Figure 5 Enlarged view of a section at point B in the middle;

[0025] Figure 8 This is a schematic diagram of the PCB support, reactor, and housing according to an embodiment of this application;

[0026] Figure 9 This is a schematic diagram of the PCB bracket and connector mating according to an embodiment of this application;

[0027] Figure 10 This is a schematic diagram of a PCB bracket according to an embodiment of this application;

[0028] Figure 11 This is a schematic diagram of the box according to an embodiment of this application;

[0029] Figure 12 This is a schematic diagram of the installation frame according to an embodiment of this application;

[0030] Figure 13 This is a schematic diagram of a terminal block according to an embodiment of this application.

[0031] Figure label:

[0032] 10000, Air conditioner;

[0033] 1. Electrical control box;

[0034] 11. PCB bracket; 11a. Fixing screw holes;

[0035] 111. First mounting base; 1111. First plate; 1112. Second plate; 1113. Third plate;

[0036] 112. Second limiting part;

[0037] 113. Second mounting base; 113a. Second mounting hole; 113b. Mating groove; 1131. Baffle;

[0038] 12. Reactor; 121. Connecting plate; 121a. First mating hole;

[0039] 13. Terminal block; 13a. First mounting hole; 131. Boss;

[0040] 14. Box body; 14a. Accommodation space; 14b. First clearance hole;

[0041] 141. Base plate; 1411. Screw post;

[0042] 142, Side plate; 142a, Second mating hole;

[0043] 143. First limiting part;

[0044] 15. Mounting frame; 15a. Cavity; 151. Avoidance post; 151a. Second receiving cavity;

[0045] 16. Front cover; 17. Rear cover;

[0046] 2. Panel;

[0047] 3. Air duct assembly; 31. Heat exchange components; 32. Air duct components; 33. Air outlet frame;

[0048] 4. Fresh air assembly; 41. Purification duct; 42. Purification air outlet frame;

[0049] 5. Rear box assembly; 6. Top cover; 7. Chassis. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0052] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] 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.

[0055] 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.

[0056] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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 of this application.

[0057] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0058] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0059] In this application, "multiple" means two or more (including two).

[0060] The following is for reference. Figures 1-13 This application describes an electrical control box 1 and an air conditioner 10000 according to embodiments of the present application.

[0061] like Figure 4 As shown, according to the first aspect embodiment of the present application, the electrical control box 1 includes: a PCB bracket 11, a reactor 12, and a box body 14.

[0062] One side of the PCB bracket 11 is used to mount the circuit board, and the other side of the PCB bracket 11 is provided with a terminal block 13. The box body 14 has an accommodating space 14a. The bottom plate 141 of the box body 14 has a first clearance hole 14b. The PCB bracket 11 is set in the accommodating space 14a. The terminal block 13 passes through the first clearance hole 14b. The PCB bracket 11 has a first mounting base 111. The reactor 12 is set in the first mounting base 111 and connected to one end of the box body 14. The first mounting base 111 is located at one end of the first clearance hole 14b. The other end of the PCB bracket 11 located at the first clearance hole 14b is provided with a fixing screw hole 11a. The PCB bracket 11 is connected to the box body 14 by a fastener passing through the fixing screw hole 11a.

[0063] Specifically, the PCB (Printed Circuit Board) bracket 11 has a circuit board mounted on one side and a terminal block 13 on the other side for connecting to external cables to ensure normal transmission of electrical signals. The PCB bracket 11 provides good support, fixation, and protection for the circuit board and terminal block 13. The housing 14 has an accommodating space 14a for accommodating and protecting the PCB bracket 11, terminal block 13, and other components. The PCB bracket 11 has fixing screw holes 11a for fasteners (such as screws) to pass through, so as to securely connect the PCB bracket 11 to the housing 14. The base plate 141 of the box 14 may have a first clearance hole 14b to avoid the terminal block 13, so that the terminal block 13 on the PCB bracket 11 can pass through the first clearance hole 14b for connection with external cables; the reactor 12 is used to control the circuit to ensure the efficient and stable operation of the circuit in the electrical control box 1. The reactor 12 is set in the first mounting base 111 of the PCB bracket 11 and connected to one end of the box 14 to enhance the stability and reliability of the structure.

[0064] It should be noted that the aforementioned terminal block 13 is located on the PCB bracket 11 in the area corresponding to the first clearance hole 14b. The first mounting base 111 on the PCB bracket 11 is located at one end of the first clearance hole 14b. Through the connection between the reactor 12 inside the first mounting base 111 and the housing 14, the connection between the PCB bracket 11 and the housing 14 can be strengthened, and the support stability of the terminal block 13 at one end can be enhanced. The fixing screw hole 11a on the PCB bracket 11 is located at the other end of the first clearance hole 14b. Through the cooperation of the fixing screw hole 11a and the fastener, the connection between the PCB bracket 11 and the housing 14 at the other end can be strengthened, and the support stability of the terminal block 13 at the other end can be enhanced.

[0065] According to the electrical control box 1 of this application, the connection between the reactor 12 on the PCB bracket 11 and the box body 14, and the connection between the PCB bracket 11 and the box body 14 through the fixing screw hole 11a on the PCB bracket 11 and the fastener, can improve the reliability and stability of the connection between the PCB bracket 11 and the box body 14 at both ends of the terminal block 13. In contrast to related technologies, improper operation during after-sales installation and wiring can easily lead to loosening or even separation of the connection between the PCB bracket and the electrical control box, resulting in the inward collapse of the terminal block and increasing the risk of short circuits. In this application, the connection between the reactor 12 and the box 14, and the cooperation between the fixing screw hole 11a and the fastener, lock the PCB bracket 11 and the box 14 together, effectively improving the impact resistance of the PCB bracket 11 and the box 14 assembly structure. This can prevent the PCB bracket 11 and the box 14 from loosening or separating due to excessive force applied by the electric screwdriver during after-sales operation. It can also ensure the accuracy and stability of the position of the terminal block 13 relative to the box 14, PCB bracket 11, and other components in the electrical control box 1, thereby improving the working reliability, safety, and service life of the electrical control box 1.

[0066] Furthermore, in some specific embodiments of this application, such as Figure 10 and Figure 13 As shown, the terminal block 13 has a first mounting hole 13a in the middle, and a boss 131 is provided on the side of the terminal block 13 away from the housing 14, with the boss 131 spaced apart from the first mounting hole 13a. The PCB bracket 11 has a second mounting seat 113, which has a spaced second mounting hole 113a and a mating groove 113b. The mating groove 113b is adapted to receive the boss 131, and the second mounting hole 113a and the first mounting hole 13a are adapted to mate with the same fastener to connect the terminal block 13 to the second mounting seat 113. By using the mating groove 113b to mate with the boss 131, and by using the second mounting hole 113a and the first mounting hole 13a to mate with the fastener, the connection between the terminal block 13 and the second mounting seat 113 can be limited in different positions, ensuring that the terminal block 13 has good installation stability on the PCB bracket 11.

[0067] Furthermore, in some other specific embodiments of this application, such as Figure 5 and Figure 9 As shown, at least a portion of the edge of the second mounting base 113 is provided with a baffle 1131. The baffle 1131 is adapted to push against the terminal block 13 to provide good installation positioning and limiting function for the terminal block 13. By providing the baffle 1131, the installation accuracy and stability of the terminal block 13 can be further improved.

[0068] like Figure 8 and Figure 10As shown, according to some embodiments of this application, the first mounting base 111 includes: a first plate 1111, a second plate 1112, and two third plates 1113.

[0069] The first plate 1111 and the second plate 1112 both extend in the first direction, and the first plate 1111 and the second plate 1112 are spaced apart and opposite to each other in the second direction. The two third plates 1113 extend in the second direction and are spaced apart. The first direction and the second direction are orthogonal. The ends of the first plate 1111 and the second plate 1112 near the first clearance hole 14b in the first direction are respectively connected to the ends of the two third plates 1113 opposite to each other. The first plate 1111, the second plate 1112, the third plate 1113 and the surface of the PCB bracket 11 together define a first receiving cavity suitable for accommodating the reactor 12.

[0070] Specifically, the first plate 1111 and the second plate 1112 can both extend in the first direction, and are arranged opposite each other at a certain distance in the second direction. Two third plates 1113 can both extend in the second direction, and are arranged opposite each other at a certain distance in the second direction. The ends of the two third plates 1113 facing away from each other are respectively connected to the first plate 1111 and the second plate 1112. The first plate 1111, the second plate 1112, the third plate 1113, and the surface of the PCB support 11 together define a first receiving cavity, which is used to house the reactor 12. The first and second directions are orthogonal, and the angles between the first plate 1111 and one of the third plates 1113, and between the second plate 1112 and the other third plate 1113, are all right angles. This makes at least some of the corners of the first receiving cavity right angles, so that the first receiving cavity can effectively limit the reactor 12 disposed therein in both the first and second directions. This ensures the installation accuracy of the reactor 12 and improves the installation stability of the reactor 12.

[0071] like Figure 4 , Figure 8 as well as Figure 10 As shown, according to some embodiments of this application, the reactor 12 is adapted to push against the third plate 1113 at one end near the first clearance hole 14b in the first direction, and a connecting plate 121 is provided at the other end. The connecting plate 121 has first mating holes 121a at both ends in the second direction. The side plate 142 of the housing 14 has second mating holes 142a that correspond one-to-one with the first mating holes 121a. The second mating holes 142a and the first mating holes 121a are adapted to be mated by fasteners.

[0072] Specifically, the end of the reactor 12 near the first clearance hole 14b in the first direction is adapted to abut against the third plate 1113, which can limit the reactor 12 in the first direction. A connecting plate 121 is provided at the other end of the reactor 12 near the first clearance hole 14b in the first direction. The connecting plate 121 can extend along the second direction and is positioned opposite to the side plate 142 of the housing 14 in the first direction. The connecting plate 121 has first mating holes 121a at both ends in the second direction, and the side plate 142 of the housing 14 has second mating holes 142a corresponding to the first mating holes 121a. During installation, the first mating holes 121a on the connecting plate 121 of the reactor 12 are aligned with the second mating holes 142a on the side plate 142 of the housing 14. By using fasteners (such as screws) passing through the first and second mating holes 121a and 142a, a secure connection can be achieved between the other end of the reactor 12 and the side plate 142 of the housing 14. By using a method where one end of the reactor 12 is pushed and limited by the third plate 1113, and the other end is connected to the housing 14 by fasteners, the reactor 12 is securely installed, ensuring that it is not easy to loosen or fall off after installation, thus guaranteeing the working stability and safety of the reactor 12. On the other hand, this method also improves the convenience and efficiency of reactor 12 installation and maintenance, while ensuring a good connection between one end of the PCB bracket 11 and the housing 14 through the reactor 12, thereby improving the stability of the PCB bracket 11 and housing 14 assembly structure.

[0073] like Figure 8 , Figure 10 as well as Figure 11 As shown, according to some embodiments of this application, a first limiting part 143 is provided at each of the four corners of the box body 14, and a second limiting part 112 suitable for engaging with the first limiting part 143 is provided at each of the four corners of the PCB bracket 11.

[0074] Specifically, the general outlines of the box body 14 and the PCB support 11 can both be constructed as squares. The four corners of the box body 14 are provided with first limiting parts 143, and the four corners of the PCB support 11 are provided with second limiting parts 112. The number and position of the second limiting parts 112 on the PCB support 11 correspond one-to-one with the first limiting parts 143 on the box body 14. The first limiting parts 143 and the second limiting parts 112 are constructed to engage with each other. For example, the engagement is achieved by engaging with a protrusion and a groove or hole. For example, the first limiting part 143 can be constructed as a engagement hole, and the second limiting part 112 can be constructed as an engagement protrusion. The engagement protrusion is suitable for extending into the engagement hole to achieve engagement, thereby engaging and fixing the box body 14 and the PCB support 11. By setting the first limiting part 143 and the second limiting part 112, the box body 14 and the PCB bracket 11 can be snapped together around the perimeter, which can improve the assembly stability of the PCB bracket 11 and the box body 14, and also improve the convenience of installation and disassembly of the PCB bracket 11 and the box body 14.

[0075] Furthermore, in some specific embodiments of this application, the box body 14 has two side plates 142 facing each other in the first direction. Each side plate 142 is provided with a first limiting part 143 at both ends in the second direction. The second limiting part 112 on the PCB bracket 11 corresponds one-to-one with the first limiting part 143 on the two side plates 142. The four first limiting parts 143 on the box body 14 are formed into two sets facing each other in the first direction. One set can cooperate with the corresponding second limiting part 112 to pre-fix the PCB bracket 11 and the box body 14, thereby improving the assembly positioning accuracy and thus helping to improve assembly accuracy and assembly efficiency.

[0076] like Figure 11 As shown, according to some embodiments of this application, a screw post 1411 is provided on the side of the bottom plate 141 of the housing 14 near the PCB support 11. The screw post 1411 is adapted to pass through the fixing screw hole 11a to connect the housing 14 to the PCB support 11.

[0077] Specifically, a screw post 1411 can be provided on the base plate 141 of the housing 14. The screw post 1411 can extend from the base plate 141 toward the PCB support 11, and the screw post 1411 is opposite to the fixing screw hole 11a on the PCB support 11. The radial dimensions of the screw post 1411 and the fixing screw hole 11a are matched so that the screw can pass through the fixing screw hole 11a and be fastened to the screw post 1411 to connect the housing 14 and the PCB support 11. By providing the screw post 1411 on the base plate 141 of the housing 14, a stable connection between the PCB support 11 and the housing 14 at the other end of the first clearance hole 14b is ensured, which can prevent the PCB support 11 from shaking or falling off inside the housing 14, and can effectively improve the reliability and durability of the electrical control box 1. In addition, the use of the screw post 1411 and fixing screw hole 11a also makes the assembly process simple and quick, which is conducive to improving production efficiency and ensuring the overall quality of the electrical control box 1.

[0078] like Figure 11 As shown, according to some embodiments of this application, at least a portion of the base plate 141 of the box body 14 is constructed of sheet metal, and screw posts 1411 are disposed on at least a portion of the base plate 141.

[0079] Specifically, at least a portion of the base plate 141 of the box body 14 can be constructed of sheet metal. Sheet metal has characteristics such as high strength, good wear resistance, and high temperature resistance. By constructing at least a portion of the base plate 141 of the box body 14 as sheet metal, it can be ensured that at least a portion of the base plate 141 of the box body 14 has good strength, wear resistance, and high temperature resistance. The screw posts 1411 are disposed on at least a portion of the base plate 141. In this way, the safety of the electrical control box 1 under extreme conditions can be improved. For example, when the PCB bracket 11 catches fire, the high temperature may cause the material to deform, melt, or even burn. However, since the screw posts 1411 are disposed on the sheet metal, the high strength and high temperature resistance of the sheet metal can ensure that the screw posts 1411 remain stable in the fire environment and are not easy to fall off. In this way, even if a fire occurs inside the electrical control box 1, the stability of the screw posts 1411 can effectively prevent flames from escaping from the screw holes, thereby effectively reducing the risk of fire spread.

[0080] like Figure 8 As shown, according to some embodiments of this application, the mating gap between the bottom end of the reactor 12 and the first mounting base 111 is configured to be 0mm to 1mm.

[0081] Specifically, the fit clearance between the bottom end of the reactor 12 and the first mounting base 111 can be understood as the fit clearance between the bottom end of the reactor 12 and the contact surface of the first mounting base 111. When the clearance between the bottom end of the reactor 12 and the first mounting base 111 is greater than 1mm (e.g., 1.5mm, 1.6mm, or 2mm), the excessive clearance can prevent the reactor 12 from forming a tight fit with the first mounting base 111 after installation. This results in poor stability of the reactor 12 and weak reinforcement of the PCB bracket 11 and the box 14 at the reactor 12 end after assembly. Under vibration or impact, the reactor 12 is prone to loosening, which can cause the terminal block 13 to collapse inward and rub or collide with the box 14, resulting in a short circuit and affecting the overall safety of the terminal block 13 and the electrical control box 1. When the clearance between the bottom end of the reactor 12 and the first mounting base 111 is less than 0mm, the excessive clearance prevents the reactor 12 from being smoothly placed in the preset installation position during installation. This makes the assembly process difficult or even impossible. Furthermore, under forced assembly, the reactor 12 or the first mounting base 111 may also be damaged due to excessive clearance. Large assembly forces can cause deformation and even damage to components, severely affecting the performance of the electrical control box 1 and increasing maintenance and replacement costs. In this embodiment, the fit gap between the bottom end of the reactor 12 and the first mounting base 111 is set in the range of 0mm to 1mm, such as 0mm, 0.4mm, 0.8mm, or 1mm. This ensures that the fit gap between the bottom end of the reactor 12 and the first mounting base 111 is appropriate, which helps to ensure good bonding between the reactor 12 and the PCB bracket 11 and the box 14 after installation. This allows the PCB bracket 11 and the box 14 to form a stable assembly and locking state. This stable assembly and locking state can improve the overall stability of the PCB bracket 11 and the box 14, and prevent loosening due to vibration or external impact. This ensures the relative positional stability of the terminal block 13 between the PCB bracket 11 and the box 14, and guarantees the overall working reliability and safety of the terminal block 13 and the electrical control box 1.

[0082] Furthermore, in some specific embodiments of this application, the fit gap between the bottom end of the reactor 12 and the first mounting base 111 is configured to be 0.2mm, so as to ensure good assembly between the reactor 12 and the first mounting base 111 and between the PCB bracket 11 and the box 14, so as to ensure that the overall structure of the electrical control box 1 has good stability.

[0083] like Figure 4 , Figure 5 as well as Figure 12As shown, according to some embodiments of this application, the electrical control box 1 further includes: a mounting frame 15, which is connected to the box body 14 and located on the side of the box body 14 away from the PCB support 11. At least a portion of the mounting frame 15 covers the box body 14. The mounting frame 15 has a second clearance hole, and the cross-sectional area of ​​the second clearance hole is larger than the cross-sectional area of ​​the first clearance hole 14b, so as to avoid the terminal block 13.

[0084] Specifically, the mounting frame 15 is connected to the housing 14 and located on the side of the housing 14 away from the PCB support 11. The mounting frame 15 can form a cavity 15a to accommodate the housing 14 and components such as the PCB support 11. At least part of the mounting frame 15 covers the top of the housing 14, providing additional protection and support for the housing 14. For example, at least part of the mounting frame 15 covers the top of the housing 14, forming a protective cover. In this way, when water droplets fall on the top of the housing 14, the protective cover formed by the mounting frame 15 can block the water droplets to one side, protecting the other side of the housing 14 from contact with the water droplets. This prevents water droplets from flowing into the interior of the housing 14, effectively improving the operational safety of electronic components and circuits inside the housing 14. The mounting frame 15 is provided with a second clearance hole, which can further avoid the terminal block 13, so that at least part of the terminal block 13 set on the PCB bracket 11 can pass through the box 14 and the mounting frame 15 in sequence through the first clearance hole 14b and the second clearance hole, thereby ensuring that the terminal block 13 can be properly connected to the external cable.

[0085] It is understandable that by setting the cross-sectional area of ​​the second clearance hole to be larger than the cross-sectional area of ​​the first clearance hole 14b on the bottom plate 141 of the housing 14, it can be ensured that the installation of the terminal block 13 will not be obstructed, and that the performance will not be reduced or damaged due to insufficient space, thereby improving the working reliability and performance of the terminal block 13.

[0086] like Figure 5 and Figure 6 As shown, according to some embodiments of this application, the mounting frame 15 is provided with a relief protrusion 151 protruding away from the box body 14. The relief protrusion 151 has a second receiving cavity 151a. The cross-sectional area of ​​the second receiving cavity 151a is larger than the cross-sectional area of ​​the fixing screw hole 11a. One end of the fastener passing through the fixing screw hole 11a is adapted to extend into the second receiving cavity 151a.

[0087] Specifically, a relief protrusion 151 protruding away from the box body 14 is provided on the mounting frame 15. The relief protrusion 151 has a second receiving cavity 151a. The second receiving cavity 151a can open towards the direction close to the box body 14, and the cross-sectional area of ​​the second receiving cavity 151a is larger than the cross-sectional area of ​​the fixing screw hole 11a on the PCB bracket 11. During the assembly process of the PCB bracket 11 and the box body 14, one end of the fastener (such as a screw) passing through the fixing screw hole 11a can extend into the second receiving cavity 151a of the relief protrusion 151, which can prevent the screw from protruding out of the sheet metal part of the electrical control box 1 and cutting the power cord. In this way, on the one hand, the avoidance post 151 can play a good limiting role for the fastener, which can improve the anti-loosening performance of the fastener during use, increase the stability and reliability of the fastener and the fixing screw hole 11a, and further improve the fixing reliability between the PCB bracket 11 and the box 14; on the other hand, the avoidance post 151 can protect the fixing screw, which can prevent the fixing screw from protruding out of the mounting frame 15 and cutting the power cord and other components, which helps to improve the working safety and service life of the internal components of the electrical control box 1.

[0088] Furthermore, in some specific embodiments of this application, such as Figure 4 As shown, the electrical control box 1 also includes a front cover 16 and a rear cover 17. The front cover 16 is located on the side of the PCB bracket 11 away from the box body 14 and is connected to the mounting frame 15. The front cover 16 can close the accommodating space 14a of the box body 14. The rear cover 17 is located on the side of the mounting frame 15 away from the box body 14. The front cover 16 and the rear cover 17 can protect and install the components of the electrical control box 1.

[0089] like Figures 1-3 As shown, the air conditioner 10000 according to the second aspect embodiment of this application includes the electrical control box 1 described in the above embodiment. Since the air conditioner 10000 according to the second aspect embodiment of this application includes the electrical control box 1 described in the above embodiment, the PCB bracket 11 and the box body 14 in the electrical control box 1 of the air conditioner 10000 can be locked together through the connection of the reactor 12 and the box body 14 and the cooperation of the fixing screw hole 11a and the fastener. This effectively improves the impact resistance of the PCB bracket 11 and the box body 14 assembly structure, thereby preventing the PCB bracket 11 and the box body 14 from loosening or separating due to excessive force applied by the electric screwdriver during after-sales operation. This ensures the accuracy and stability of the position of the terminal block 13 relative to the box body 14, PCB bracket 11 and other components in the electrical control box 1, thereby improving the working reliability, safety and service life of the electrical control box 1.

[0090] Furthermore, in some specific embodiments of this application, the air conditioner 10000 also includes a panel 2, an air duct assembly 3, a fresh air assembly 4, a rear box assembly 5, a top cover 6, and a chassis 7. The panel 2 and the rear box assembly 5 are connected and arranged opposite to each other, defining a receiving cavity between them. The panel 2 and the rear box assembly 5 serve to decorate, beautify, and protect the internal components of the air conditioner 10000. The air duct assembly 3, the fresh air assembly 4, and the electrical control box 1 are all housed within the receiving cavity. The air duct assembly 3 may include a heat exchange component 31, an air duct component 32, and an air outlet frame 33, used to realize the air intake and air outlet functions of the air conditioner 10000. The fresh air assembly 4 is used to realize the fresh air function of the air conditioner 10000. The air conditioner 10000 includes a purification duct 41 and a purification air outlet frame 42. The purification duct 41 is used for air circulation to deliver air from the interior of the air conditioner 10000 to the room. The purification air outlet frame 42 is used to fix and support the purification duct 41 and ensure the uniform distribution of the air outlet. The top cover 6 and the chassis 7 are respectively located at the top and bottom of the panel 2 and the rear box assembly 5, and enclose the receiving cavity. The top cover 6 and the chassis 7 can support, fix and protect the internal components of the air conditioner 10000, and increase the aesthetics of the exterior of the air conditioner 10000.

[0091] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0092] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electrical control box, characterized in that, include: A PCB bracket and a reactor are provided. One side of the PCB bracket is used to mount the circuit board, and the other side of the PCB bracket is provided with a terminal block. The box has an accommodating space. The bottom plate of the box has a first clearance hole. The PCB bracket is disposed in the accommodating space. The terminal block passes through the first clearance hole. The PCB bracket has a first mounting base. The reactor is disposed in the first mounting base and connected to one end of the box. The first mounting base is located at one end of the first clearance hole. The other end of the PCB bracket located at the first clearance hole has a fixing screw hole. The PCB bracket is connected to the box through a fastener passing through the fixing screw hole.

2. The electrical control box according to claim 1, characterized in that, The first mounting base includes a first plate, a second plate, and two third plates. The first plate and the second plate extend in a first direction and are spaced apart and opposite to each other in a second direction. The two third plates extend in the second direction and are spaced apart. The first direction and the second direction are orthogonal. The ends of the first plate and the second plate near the first clearance hole in the first direction are respectively connected to the ends of the two third plates opposite to each other. The first plate, the second plate, the third plates, and the surface of the PCB bracket together define a first receiving cavity suitable for accommodating the reactor.

3. The electrical control box according to claim 2, characterized in that, The reactor is adapted to abut against the third plate at one end in the first direction near the first clearance hole, and a connecting plate is provided at the other end. The connecting plate has first mating holes at both ends in the second direction. The side plate of the box has second mating holes that correspond one-to-one with the first mating holes. The second mating holes and the first mating holes are adapted to be mated by fasteners.

4. The electrical control box according to claim 1, characterized in that, The four corners of the box are provided with a first limiting part, and the four corners of the PCB bracket are provided with a second limiting part suitable for engaging with the first limiting part.

5. The electrical control box according to claim 1, characterized in that, The bottom plate of the box body is provided with a screw post on the side near the PCB bracket. The screw post is adapted to pass through the fixing screw hole to connect the box body to the PCB bracket.

6. The electrical control box according to claim 5, characterized in that, At least a portion of the base plate of the box is constructed of sheet metal, and the screw posts are disposed on the at least portion of the base plate.

7. The electrical control box according to claim 1, characterized in that, The fit clearance between the bottom end of the reactor and the first mounting base is 0mm to 1mm.

8. The electrical control box according to claim 1, characterized in that, Also includes: The mounting frame is connected to the housing and located on the side of the housing away from the PCB support. At least a portion of the mounting frame covers the top of the housing. The mounting frame has a second clearance hole with a cross-sectional area larger than that of the first clearance hole to avoid the terminal block.

9. The electrical control box according to claim 8, characterized in that, The mounting frame is provided with a relief protrusion that protrudes away from the box body. The relief protrusion has a second receiving cavity. The cross-sectional area of ​​the second receiving cavity is larger than the cross-sectional area of ​​the fixing screw hole. One end of the fastener passing through the fixing screw hole is adapted to extend into the second receiving cavity.

10. An air conditioner, characterized in that, include: The electrical control box according to any one of claims 1-9.

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