Air conditioner indoor unit

Abstract

This utility model relates to the field of air conditioning and provides an indoor unit for an air conditioner, comprising: a water collection tray; an air guide ring fixed to the water collection tray; the water collection tray having a cable passage groove for passing motor wires, with a first sealing element between the motor wires and the cable passage groove; the air guide ring having a cable cover, the cable cover forming a cable passage cavity communicating with the cable passage groove, the motor wires passing through the cable passage cavity, and a second sealing element between the motor wires and the cable cover. This utility model can solve the defect in the prior art where the lack of an effective seal between the motor wires and the water collection tray leads to condensation on the water collection tray easily seeping into the electrical control box through the motor wires, causing electrical faults or safety hazards, by setting up a double seal along the path of the motor wires, thus improving sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an indoor unit for air conditioning. Background Technology

[0002] An air conditioner indoor unit typically includes a drip tray, a motor, and an electrical control box. The motor is installed on one side of the drip tray, and the motor wires need to pass through the wiring trough of the drip tray and then connect to the electrical control box. The drip tray is used to collect condensate (condensate water) generated during the operation of the air conditioner.

[0003] Condensation from the drip tray can seep through the gaps between the wiring duct and the motor wires. This condensation can then flow along the motor wires and seep into the electrical control box, potentially causing electrical malfunctions or safety hazards. Therefore, the sealing of the motor wires is crucial. Achieving a proper seal between the motor wires and the drip tray along the wiring path is an urgent problem to be solved. Utility Model Content

[0004] This utility model provides an indoor air conditioning unit to solve the defect in the prior art where the lack of effective sealing between the motor wire and the water tray makes it easy for condensate on the water tray to seep into the electrical control box through the motor wire, causing electrical faults or safety hazards. The invention achieves double sealing along the arrangement path of the motor wire to improve sealing performance.

[0005] This utility model provides an indoor unit for an air conditioner, comprising:

[0006] Water tray;

[0007] An air intake ring is fixed to the water receiving tray;

[0008] The water receiving tray is provided with a wire passage groove for passing the motor wire, and a first sealing element is provided between the motor wire and the wire passage groove;

[0009] The air intake ring is equipped with a wire cover, which forms a wire passage cavity communicating with the wire passage groove. The motor wire passes through the wire passage cavity, and a second sealing element is provided between the motor wire and the wire cover.

[0010] According to the present invention, an indoor air conditioning unit is provided with a side opening on one side of the wiring cavity for the motor wire to pass through, and a second sealing member is disposed at the side opening.

[0011] According to the present invention, an indoor air conditioning unit includes a wire cover comprising a main body corresponding to the wire passage groove and an extension portion extending outward from one side of the main body. A wire passage portion is formed on the outer side of the extension portion. The motor wire passes through the wire passage cavity of the main body and is arranged along the wire passage portion. A second sealing member is disposed on the wire passage portion.

[0012] According to the present invention, an indoor air conditioning unit is provided with an installation area at the outer end of the extension, the installation area is provided with a surrounding rib, and the motor wire passes through the wire passing part from the outside of the surrounding rib.

[0013] According to the present invention, an indoor air conditioning unit is provided in which the water receiving tray is provided with a cable tray for arranging power cords, the power cords and the motor cords are arranged adjacent to each other at intervals, the air duct is provided with a limiting structure that separates the power cords from the motor cords, and the limiting structure is provided with a limiting hole for the power cords to pass through.

[0014] According to the present invention, an indoor air conditioner unit is provided, wherein the limiting structure includes a rib provided on the air duct ring and a pressure plate provided on the rib. One end of the rib is provided with a slot and the other end is provided with a recess. The pressure plate is provided with a plug-in part that cooperates with the slot. The pressure plate and the recess together form the limiting hole.

[0015] The air intake ring is provided with screw posts, and the pressure plate is provided with screw holes. The pressure plate is fixed to the screw posts by fasteners.

[0016] According to the present invention, an indoor air conditioning unit is provided in which the limiting structure is integrally formed on the air duct ring.

[0017] According to the present invention, an indoor air conditioner unit is provided with a side opening on one side of the wiring cavity for the motor wire to pass through, and the side opening is disposed away from the power line.

[0018] According to the present invention, an indoor air conditioning unit is provided with a third sealing element between the power cord and the limiting hole.

[0019] According to the present utility model, an air conditioner indoor unit is provided with an electrical control box on the air duct ring, one end of the motor wire is connected to the electrical control box through the wire cover, and one end of the power cord is connected to the electrical control box through the limiting hole.

[0020] The electrical control box contains a circuit board, which includes a high-voltage area and a low-voltage area. The motor wire and the power supply wire are arranged on one side of the water receiving tray and are set corresponding to the high-voltage area.

[0021] The air conditioner indoor unit provided by this utility model improves sealing performance by setting a double-sealing structure along the motor wiring path. This prevents condensate from leaking from the drip tray and seeping into the electrical control box along the motor wiring, thus reducing safety hazards, extending the structural service life, and improving the safety and reliability of the air conditioner. Specifically, a first sealing element is provided between the motor wiring and the wiring trough, achieving a primary seal to prevent condensate from seeping out through the gap between the motor wiring and the wiring trough. Furthermore, a second sealing element is provided between the motor wiring downstream of the wiring trough and the wiring cover, achieving a secondary seal. This further blocks the leakage path of condensate and prevents condensate from flowing into the electrical control box. Through this double protection, the sealing reliability is effectively improved. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the arrangement of the motor wires on the water receiving tray provided by this utility model;

[0024] Figure 2 This is one of the schematic diagrams showing the arrangement of the motor wires and power wires on the air intake ring provided by this utility model;

[0025] Figure 3 This is the second schematic diagram of the arrangement of the motor wires and power wires on the air intake ring provided by this utility model;

[0026] Figure 4 This is the third schematic diagram of the arrangement of the motor wires and power wires on the air intake ring provided by this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the air intake ring provided by this utility model;

[0028] Figure 6 yes Figure 5 An enlarged schematic diagram of the structure at point A in the middle.

[0029] Figure label:

[0030] 10. Water tray; 101. Cable tray; 11. Air intake ring; 12. Motor cable; 13. Cable passage trough; 14. Cable cover; 141. Cable passage cavity; 142. Side opening; 143. Main body; 144. Extension; 145. Cable passage part; 146. Surrounding rib; 15. Power cable; 16. Limiting structure; 161. Limiting hole; 162. Raised rib; 1621. Slot; 1622. Recess; 163. Pressure plate; 164. Screw post; 17. Fastener; 18. Electrical control box. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "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, an electrical connection, or a communication 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "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 utility model. 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.

[0035] like Figures 1 to 6 As shown, this utility model provides an indoor air conditioning unit, comprising:

[0036] 10 water trays;

[0037] The air intake ring 11 is fixed on the water receiving tray 10;

[0038] The water receiving tray 10 is provided with a wire passage groove 13 for passing the motor wire 12 through, and a first sealing element is provided between the motor wire 12 and the wire passage groove 13;

[0039] The air intake ring 11 is provided with a wire cover 14, which forms a wire passage cavity 141 communicating with the wire passage groove 13. The motor wire 12 passes through the wire passage cavity 141, and a second sealing element is provided between the motor wire 12 and the wire cover 14.

[0040] Specifically, the indoor unit of the air conditioner also includes a motor and an electrical control box 18. The motor is located on one side of the drip tray 10. The motor wire 12 needs to run from the drip tray 10 to the electrical control box 18. The drip tray 10 will generate a large amount of condensation. If the motor wire 12 and the drip tray 10 are not sealed properly, condensation will leak and seep into the electrical control box 18 through the motor wire 12, causing an electrical fault. Figure 1 As shown, the motor wire 12 first passes through the wire groove 13 of the water receiving tray 10. By setting a first sealing element between the motor wire 12 and the wire groove 13, condensation can be prevented from seeping out through the gap between the motor wire 12 and the wire groove 13. Figure 1One form of the cable tray 13 is shown, employing a U-shaped cable tray 13 to facilitate the passage of terminals (the terminal size is generally larger than the wire diameter) at the end of the motor wire 12. Of course, the cable tray 13 is not limited to the above form and can also be circular, elliptical, or other shapes. The first sealing element is, for example, a gasket disposed in the cable tray 13. In some examples, the first sealing element is a U-shaped gasket, which can wrap around the outer wall of the motor wire 12 and press against the inner wall of the cable tray 13 to form an annular seal, offering strong adaptability. In other examples, the first sealing element is an annular gasket (O-ring), which can be fitted onto the motor wire 12 and embedded within the cable tray 13, providing uniform sealing pressure and facilitating sealing in a dynamic vibration environment. In still other examples, the first sealing element is a flat sealing strip, adhered to the outlet end face of the cable tray 13, which can directly block the water flow path, offering flexible installation. Understandably, to improve sealing reliability, in some embodiments, two first seals may be provided: one inside the cable tray 13, such as a U-shaped gasket, and the other at the outlet end face of the cable tray 13, forming a physical barrier and creating a double seal with the gasket inside the cable tray 13, thus reducing the risk of water leakage. The gasket at the outlet end face of the cable tray 13 can employ a waterproof structure and be fixed by adhesive or compression (for example, the gasket can be compressed using the structure on the air guide ring 11, thus eliminating the need for an additional compression structure).

[0041] Furthermore, even if the first seal in the cable tray 13 fails or becomes loose due to vibration, resulting in a poor seal, this application also provides a second seal, offering multiple sealing guarantees. For example... Figures 2 to 6 As shown, the motor wire 12 passes through the wire channel 13 and then through the wire cavity 141 before connecting to the electrical control box 18. By providing a second seal, even if a small amount of condensation seeps into the outlet of the wire channel 13, the flow of condensation is blocked by the second seal, preventing it from flowing into the electrical control box 18. The wire cover 14 forms the wire cavity 141, which covers part of the motor wire 12. The wire cavity 141 facilitates the guidance of condensation to the water receiving tray 10, where it is discharged through the drain hole, thus preventing it from dripping into the electrical control box 18. The wire cavity 141 also prevents tools from accidentally touching the motor wire 12, reducing the risk of wear or short circuits. The wire cover 14 can be integrally formed on the air intake ring 11 or it can be a detachable structure. Removing the wire cover 14 facilitates inspection and maintenance of the motor wire 12, improving maintenance convenience.

[0042] The location of the second seal can be flexibly set according to actual needs. For example, in one embodiment, the wire passage cavity 141 is provided with a side opening 142 for the motor wire 12 to pass through, and the second seal is located at the side opening 142.

[0043] like Figure 3 or Figure 6As shown, the motor wire 12 passes through the side opening 142. To prevent condensation from seeping in, a second seal is provided at the side opening 142, thus making it difficult for condensation to continue flowing outward along the motor wire 12 toward the control box 18 through the side opening 142. The second seal is, for example, a gasket fitted onto the motor wire 12, which prevents condensation from seeping out from the gap between the motor wire 12 and the side opening 142.

[0044] In another embodiment, the wire cover 14 includes a main body 143 corresponding to the wire passage groove 13 and an extension 144 extending outward from one side of the main body 143. A wire passage 145 is formed on the outer side of the extension 144. The motor wire 12 passes through the wire passage cavity 141 of the main body 143 and is arranged along the wire passage 145. The second seal is disposed on the wire passage 145.

[0045] like Figure 6 As shown, the extension 144 extends towards the electrical control box 18, and the main body 143 has a side opening 142. The motor wire 12 extends from the side opening 142 and runs along the wire guide 145. The wire guide 145 is, for example, an arc-shaped groove to match the shape of the motor wire 12. A second seal is provided in the wire guide 145 to block the seepage of condensate and prevent condensate from flowing towards the electrical control box 18 through this point. The second seal is, for example, a gasket fitted on the motor wire 12 to prevent condensate from seeping out from the gap between the motor wire 12 and the wire guide 145.

[0046] To improve sealing performance, in a preferred embodiment, two second seals are provided, one at the side opening 142 of the wire passage cavity 141 and the other at the wire passage portion 145, which can enhance the condensate barrier effect, reduce the probability of condensate reaching the electrical control box 18, and improve sealing reliability.

[0047] Furthermore, the outer end of the extension 144 is provided with an installation area, the installation area is provided with a surrounding rib 146, and the motor wire 12 passes through the wire passing part 145 from the outside of the surrounding rib 146.

[0048] like Figure 4 and Figure 6 As shown, the installation area is used to install fasteners 17 to fix the air intake ring 11 to the water receiving tray 10. In order to prevent the motor wire 12 from rubbing against the fasteners 17 when it is running and to reduce wear, the installation area is provided with a retaining rib 146. The retaining rib 146 can isolate the fasteners 17 from the motor wire 12, thereby protecting the motor wire 12.

[0049] In a preferred embodiment of the present invention, the water receiving tray 10 is provided with a cable tray 101 for arranging the power cord 15, the power cord 15 and the motor cord 12 are arranged adjacent to each other at intervals, the air duct 11 is provided with a limiting structure 16 that separates the power cord 15 from the motor cord 12, and the limiting structure 16 is provided with a limiting hole 161 for the power cord 15 to pass through.

[0050] The power cord 15 and motor cord 12 are routed on the same side of the water tray 10 and are relatively close together. Therefore, it is necessary to consider the isolation between the two to avoid interference from contact between the wire harnesses. For example... Figures 2 to 6 As shown, by setting the limiting structure 16, the power cable 15 must be arranged through the limiting hole 161. That is, the limiting hole 161 limits the routing direction of the power cable 15, which can prevent the power cable 15 from easily touching the adjacent motor cable 12 and causing interference if there is no limiting structure. In addition, the wire cover 14 of this application not only provides a seal for the motor cable 12, but also acts as an isolation structure to separate the power cable 15 and the motor cable 12, thereby reducing the risk of interference.

[0051] In some embodiments, the limiting structure 16 includes a rib 162 disposed on the air guide ring 11 and a pressure plate 163 disposed on the rib 162. One end of the rib 162 is provided with a slot 1621 and the other end is provided with a recess 1622. The pressure plate 163 is provided with a plug-in portion that cooperates with the slot 1621. The pressure plate 163 and the recess 1622 surround to form the limiting hole 161.

[0052] like Figure 6 As shown, the limiting structure 16 is located near the wire cover 14, with one part set on the air intake ring 11 and the other part being a detachable structure. By setting the combined limiting structure 16, the routing of the power cord 15 is facilitated. For example, the power cord 15 can be aligned with the recess 1622 before installing the pressure plate 163, making routing more convenient and simpler. To achieve the installation of the pressure plate 163, the pressure plate 163 can be quickly pre-installed by inserting the plug into the slot 1621. Furthermore, the air intake ring 11 is provided with screw posts 164, and the pressure plate 163 is provided with screw holes. Fasteners 17 can be inserted through the screw holes into the screw posts 164 to finally fix the pressure plate 163, ensuring a firm installation. For example, the screw post 164 is located between the slot 1621 and the recess 1622. Inserting the plug into the slot 1621 facilitates the alignment of the screw hole and the screw post 164, improving the installation efficiency of the pressure plate 163.

[0053] It is understandable that, in order to simplify the setting of the limiting structure 16, in other embodiments, the limiting structure 16 may be an integral structure, the limiting structure 16 is integrally formed on the air guide ring 11, and by forming the limiting hole 161, the power line 15 can be directly passed through the limiting hole 161 for wiring.

[0054] In addition to limiting the power line 15 and isolating the power line 15 and motor line 12, the aforementioned limiting structure 16 also serves to block water. When condensation flows to the position of the limiting structure 16, the limiting structure 16, with its raised height from the air intake ring 11, forms an isolation barrier to prevent the condensation from passing through, thereby preventing the condensation from flowing along the power line 15 to the electrical control box 18, further reducing the probability of electrical failure in the electrical control box 18 and improving safety.

[0055] In some embodiments, the cable passage cavity 141 has a side opening 142 for the motor cable 12 to pass through, and the side opening 142 is disposed away from the power cable 15. For example... Figure 2 , Figure 3 or Figure 4 As shown, the side opening 142 is positioned away from the power cord 15, meaning the side of the wire cover 14 facing the power cord 15 has a sidewall structure. This strengthens the isolation between the power cord 15 and the motor wire 12, preventing contact between the wire harnesses and thus improving the isolation effect. Furthermore, even if there is a small amount of condensation at the side opening 142, it is less likely to flow towards the power cord 15, preventing condensation from flowing along the power cord 15 towards the electrical control box 18.

[0056] To prevent condensation from flowing along the power cord 15 towards the control box 18, in some embodiments, a third seal is provided between the power cord 15 and the limiting hole 161. By providing the third seal, the flow of condensation can be blocked, preventing it from seeping through the gap between the power cord 15 and the limiting hole 161 towards the control box 18. This reduces the probability of electrical failure in the control box 18 and improves safety. The third seal is, for example, an annular gasket fitted onto the power cord 15.

[0057] Based on the above embodiment, the air intake ring 11 is provided with an electrical control box 18. One end of the motor wire 12 passes through the wire cover 14 and is connected to the electrical control box 18, and one end of the power wire 15 passes through the limiting hole 161 and is connected to the electrical control box 18. Figure 2 , Figure 3 or Figure 4 As shown, the motor wire 12 and the power wire 15 are arranged in parallel and are close to each other. The motor wire 12 and the power wire 15 can be isolated by the aforementioned wire cover 14 and limiting structure 16 to prevent wire harness contact interference (such as electromagnetic interference or short circuit risk).

[0058] The electrical control box 18 contains a circuit board, which includes a high-voltage area and a low-voltage area. The motor wire 12 and the power supply wire 15 are arranged on one side of the water receiving tray 10 and corresponding to the high-voltage area. Figure 4As shown, the motor wire 12 and power supply wire 15 are arranged on the high-voltage side of the circuit board, and the wire harness on the other side of the water tray 10 can be set up in the low-voltage area. By setting up the zones, the mutual interference between high-voltage and low-voltage circuits can be reduced, the stability of signal transmission can be improved, and safety can be enhanced. It also helps to quickly locate the faulty circuit during maintenance. When repairing high-voltage circuits, there is no need to worry about accidentally touching the low-voltage parts, reducing operational risks. It can also prevent the heat of the high-voltage cables (which generate a lot of heat) from affecting the low-voltage cables, accelerating the aging of the insulation layer of the low-voltage cables, and extending the cable life.

[0059] The air conditioner indoor unit provided by this utility model improves sealing performance by setting a double sealing structure along the wiring path of the motor wire 12. This prevents condensate on the drip tray 10 from leaking and seeping into the electrical control box along the motor wire 12, thus reducing safety hazards, extending the service life of the structure, and improving the safety and reliability of the air conditioner. Specifically, a first sealing element is provided between the motor wire 12 and the wire channel 13 to achieve a primary seal, preventing condensate from seeping out through the gap between the motor wire 12 and the wire channel 13. Furthermore, a second sealing element is provided between the motor wire 12 downstream of the wire channel 13 and the wire cover 14 to achieve a secondary seal, further blocking the leakage path of condensate and preventing condensate from flowing into the electrical control box. Through this double protection, the sealing reliability is effectively improved.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An air conditioner indoor unit characterized by comprising: include: Water receiving tray (10); A draft ring (11) is fixed to the water receiving tray (10); The water receiving tray (10) is provided with a wire passage groove (13) for passing the motor wire (12), and a first sealing element is provided between the motor wire (12) and the wire passage groove (13); The air intake ring (11) is provided with a wire cover (14), the wire cover (14) forms a wire passage cavity (141) that communicates with the wire passage groove (13), the motor wire (12) passes through the wire passage cavity (141), and a second sealing element is provided between the motor wire (12) and the wire cover (14).

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The wire passage cavity (141) has a side opening (142) on one side for the motor wire (12) to pass through, and the second seal is disposed at the side opening (142).

3. The indoor unit of the air conditioner according to claim 1, characterized in that, The wire cover (14) includes a main body (143) corresponding to the wire groove (13) and an extension (144) extending outward from the side opposite to the main body (143). A wire passage (145) is formed on the outside of the extension (144). The motor wire (12) passes through the wire passage cavity (141) of the main body (143) and is arranged along the wire passage (145). The second seal is disposed on the wire passage (145).

4. The indoor unit of the air conditioner according to claim 3, characterized in that, The extension (144) has an installation area at its outer end, and the installation area has a surrounding rib (146). The motor wire (12) passes through the wire passing part (145) from the outside of the surrounding rib (146).

5. The indoor unit of the air conditioner according to claim 1, characterized in that, The water receiving tray (10) is provided with a cable tray (101) for arranging the power cable (15). The power cable (15) and the motor cable (12) are arranged adjacent to each other at intervals. The air duct (11) is provided with a limiting structure (16) that separates the power cable (15) from the motor cable (12). The limiting structure (16) is provided with a limiting hole (161) through which the power cable (15) passes.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The limiting structure (16) includes a rib (162) provided on the air guide ring (11) and a pressure plate (163) provided on the rib (162). One end of the rib (162) is provided with a slot (1621) and the other end is provided with a recess (1622). The pressure plate (163) is provided with a plug-in part that cooperates with the slot (1621). The pressure plate (163) and the recess (1622) together form the limiting hole (161). The air intake ring (11) is provided with a screw post (164), and the pressure plate (163) is provided with a screw hole. The pressure plate (163) is fixed to the screw post (164) by a fastener (17).

7. The indoor unit of the air conditioner according to claim 5, characterized in that, The limiting structure (16) is integrally formed on the air intake ring (11).

8. The indoor unit of the air conditioner according to claim 5, characterized in that, The wire passage cavity (141) has a side opening (142) on one side for the motor wire (12) to pass through, and the side opening (142) is positioned away from the power line (15).

9. The indoor unit of the air conditioner according to claim 5, characterized in that, A third sealing element is provided between the power cord (15) and the limiting hole (161).

10. The indoor unit of the air conditioner according to any one of claims 5-9, characterized in that, An electrical control box (18) is provided on the air intake ring (11). One end of the motor wire (12) is connected to the electrical control box (18) through the wire cover (14), and one end of the power supply wire (15) is connected to the electrical control box (18) through the limiting hole (161). The electrical control box (18) is equipped with a circuit board, which includes a high-voltage area and a low-voltage area. The motor wire (12) and the power supply wire (15) are arranged on one side of the water receiving tray (10) and are set corresponding to the high-voltage area.

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