Drainage plug for air conditioner, water pan assembly and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, and discloses a drainage plug for an air conditioner. The air conditioner comprises a water pan, the water pan is provided with a drainage hole, the drainage plug is used for closing the drainage hole, the water pan is provided with a connecting matching part and a locking matching part, and the drainage plug comprises a connecting part suitable for being connected with the connecting matching part so as to close the drainage hole; and the locking part is connected with the connecting part and is suitable for being matched with the locking matching part so as to limit the connecting part to move towards the direction in which the connecting part is disconnected from the connecting matching part. The connecting part of the drainage plug is connected with the connecting matching part of the water pan, the drainage hole can be closed, and water in the water pan is prevented from leaking out. The locking part of the drainage plug is matched with the locking matching part of the water pan, fixing force is provided for the connecting part, the connecting part can be limited to move in the direction of being disconnected from the connecting matching part, the connecting stability between the connecting part and the connecting matching part is improved, and therefore the sealing performance and reliability of the water pan are improved. The utility model further discloses a water pan assembly and an air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a drain plug and a water tray assembly for an air conditioner and an air conditioner. Background Art

[0002] At present, embedded air conditioners are usually provided with a water receiving pan to receive evaporator condensate, and a drain outlet is provided on the water receiving pan to discharge the condensate out of the water receiving pan through the drain outlet. When the drain outlet is not in use, a drain plug is used to block the drain outlet to prevent condensate from leaking during daily use.

[0003] The related art provides a water receiving tray, which includes a bottom tray body and a drain plug. The bottom tray body is provided with a drain hole, and the inner wall of the drain hole is provided with an internal thread; the drain plug is provided with an external thread, and the external thread is used for interference fit with the internal thread. The drain plug and the drain hole are connected by threads, which is convenient for assembly. When the interference fit between the drain plug and the drain hole is large, the drain plug can also be easily screwed into the drain hole, thereby improving the sealing performance of the drain plug to the drain hole.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The drain plug in the related art is assembled with the drain hole through threaded interference fit. After long-term use, it will age and fail, causing the sealing of the drain plug to deteriorate, which can easily lead to the drain plug becoming loose and causing water leakage.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a drain plug, a water receiving pan assembly and an air conditioner for an air conditioner, so as to enhance the sealing effect of the drain plug.

[0009] According to a first aspect of an embodiment of the utility model, a drain plug for an air conditioner is provided, the air conditioner comprises a water receiving pan, the water receiving pan is provided with a drain hole, the drain plug is used to close the drain hole, the water receiving pan is provided with a connecting fitting part and a locking fitting part, the drain plug comprises: a connecting part, suitable for being connected to the connecting fitting part to close the drain hole; a locking part, connected to the connecting part and suitable for cooperating with the locking fitting part to limit the movement of the connecting part in a direction of being released from the connecting fitting part.

[0010] Optionally, the locking portion is suitable for being arranged outside the drainage hole, and a concave-convex structure is provided on the surface of the locking portion facing the drainage hole, and the concave-convex structure is suitable for abutting against the locking matching portion to limit the movement of the connecting portion in the direction of disconnecting from the connecting matching portion.

[0011] Optionally, the locking portion is suitable for being arranged outside the drain hole, and an inclined surface is provided on the surface of the locking portion facing the drain hole, and the inclined surface is suitable for abutting against the locking mating portion to limit the movement of the connecting portion in the direction of disconnection from the connecting mating portion, wherein along the direction from disconnection to connection between the connecting portion and the connecting mating portion, the inclined surface is inclined in the direction away from the drain hole.

[0012] Optionally, a surface of the locking portion facing the drain hole is provided with a plurality of inclined surfaces, and the plurality of inclined surfaces are sequentially arranged along the circumference of the locking portion.

[0013] Optionally, the connecting portion is adapted to be threadedly connected to the connecting fitting portion.

[0014] Optionally, the connecting portion is suitable for being arranged inside the drainage hole, and a guide surface is provided on the surface of the connecting portion facing away from the locking portion, wherein along the direction in which the connecting portion is inserted into the drainage hole, the guide surface is inclined toward the axis of the drainage plug.

[0015] Optionally, the drain plug for the air conditioner further includes: a handle, which is arranged on a side of the locking portion away from the connecting portion; and / or the drain plug is provided with a cavity, which is at least partially located at the connecting portion.

[0016] According to a second aspect of an embodiment of the utility model, a water receiving tray assembly is provided, comprising: a water receiving tray provided with a drainage hole; and a drainage plug for an air conditioner as described in any one of the above embodiments, used to close the drainage hole.

[0017] Optionally, the locking fitting portion includes a surface of the water receiving tray facing the locking portion, and the locking fitting portion is provided with a concave-convex structure.

[0018] According to a third aspect of an embodiment of the utility model, an air conditioner is provided, comprising: an indoor unit, comprising an evaporator and a water receiving tray assembly as described in any one of the above embodiments, wherein the water receiving tray assembly is arranged below the evaporator to receive condensed water generated by the evaporator.

[0019] The drain plug, water tray assembly and air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The connection part of the drain plug is connected to the connection matching part of the water receiving tray, which can close the drain hole and prevent water in the water receiving tray from leaking out. The locking part of the drain plug cooperates with the locking matching part of the water receiving tray to provide a fixing force for the connection part, which can limit the movement of the connection part in the direction of disconnection from the connection matching part, improve the connection stability between the connection part and the connection matching part, and thus improve the sealing and reliability of the water receiving tray.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 : is a structural schematic diagram of a drain plug for an air conditioner provided by an embodiment of the present disclosure, wherein the direction indicated by the arrow is the direction in which the connecting portion and the connecting mating portion are connected from being disconnected;

[0024] Figure 2 is a schematic structural diagram of another drainage plug for an air conditioner provided by an embodiment of the present disclosure;

[0025] Figure 3 It is a structural schematic diagram of another drainage plug for an air conditioner provided by an embodiment of the present disclosure;

[0026] Figure 4 is a structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure;

[0027] Figure 5 yes Figure 4 An enlarged schematic diagram of part A is shown, wherein the direction indicated by the arrow is the direction in which the connecting part is inserted into the drainage hole;

[0028] Figure 6 It is a cross-sectional schematic diagram of a drain plug and a water receiving pan for an air conditioner provided by an embodiment of the present disclosure.

[0029] Reference numerals:

[0030] 10: drainage plug; 11: connecting part; 111: guide surface; 112: cavity; 113: external thread; 12: locking part; 121: inclined surface;

[0031] 20: water tray; 21: drainage hole; 22: connection fitting part; 221: internal thread; 23: locking fitting part;

[0032] 30: handle;

[0033] 40: Indoor unit. DETAILED DESCRIPTION

[0034] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0035] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate for the disclosed embodiments described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0036] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0037] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0038] Unless otherwise stated, the term "plurality" means two or more.

[0039] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0040] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A, or B, or, A and B.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0042] At present, embedded air conditioners are usually provided with a water receiving pan to receive evaporator condensate, and a drain outlet is provided on the water receiving pan to discharge the condensate out of the water receiving pan through the drain outlet. When the drain outlet is not in use, a drain plug is used to block the drain outlet to prevent condensate from leaking during daily use.

[0043] The related art provides a water receiving tray, which includes a chassis body and a drain plug. The chassis body is provided with a drain hole, and the inner wall of the drain hole is provided with an internal thread; the drain plug is provided with an external thread, and the external thread is used for interference fit with the internal thread. The drain plug and the drain hole are connected by threads, which is convenient for assembly. When the interference fit between the drain plug and the drain hole is large, the drain plug can also be easily screwed into the drain hole to improve the sealing of the drain plug to the drain hole. The drain plug and the drain hole in the related art are assembled by threaded interference fit. After long-term use, it will age and fail, causing the sealing of the drain plug to deteriorate, which can easily cause the drain plug to loosen and cause water leakage.

[0044] Combination Figure 1-6 As shown, an embodiment of the present disclosure provides a drain plug 10 for an air conditioner, the air conditioner includes a water receiving tray 20, the water receiving tray 20 is provided with a drain hole 21, the drain plug 10 is used to close the drain hole 21, the water receiving tray 20 is provided with a connecting fitting portion 22 and a locking fitting portion 23, the drain plug 10 includes a connecting portion 11 and a locking portion 12, the connecting portion 11 is suitable for connecting with the connecting fitting portion 22 to close the drain hole 21; the locking portion 12 is connected to the connecting portion 11, and is suitable for cooperating with the locking fitting portion 23 to limit the movement of the connecting portion 11 in the direction of disconnection from the connecting fitting portion 22.

[0045] With the drain plug 10 for air conditioners provided by the embodiment of the present disclosure, the connection portion 11 of the drain plug 10 is connected to the connection matching portion 22 of the water receiving pan 20, which can close the drain hole 21 and prevent water in the water receiving pan 20 from leaking out. The locking portion 12 of the drain plug 10 cooperates with the locking matching portion 23 of the water receiving pan 20 to provide a fixing force for the connection portion 11, which can limit the movement of the connection portion 11 in the direction of disconnection from the connection matching portion 22, improve the connection stability between the connection portion 11 and the connection matching portion 22, and thus improve the sealing and reliability of the water receiving pan 20.

[0046] Optionally, combined Figure 1 and Figure 5As shown, the locking portion 12 is suitable for being arranged outside the drainage hole 21, and a concave-convex structure is provided on the surface of the locking portion 12 facing the drainage hole 21, which is suitable for abutting against the locking matching portion 23 to limit the movement of the connecting portion 11 in the direction of disconnecting from the connecting matching portion 22.

[0047] The surface of the locking portion 12 facing the drain hole 21 is provided with a concavo-convex structure, which can increase the roughness of the surface of the locking portion 12. When the outside of the drain hole 21 abuts against the locking matching portion 23 of the water receiving tray 20, the concavo-convex structure can generate greater friction and play a locking role, so that the drain plug 10 is more firmly fixed on the drain hole 21 to prevent the drain plug 10 from shifting or loosening. The close fit between the concavo-convex structure and the locking matching portion 23 can also effectively block moisture, so that no moisture will leak from the drain hole 21 in a closed state, thereby improving the sealing of the water receiving tray 20.

[0048] Optionally, combined Figure 1-3 and Figure 5 As shown, the locking portion 12 is suitable for being arranged outside the drainage hole 21, and the surface of the locking portion 12 facing the drainage hole 21 is provided with an inclined surface 121, and the inclined surface 121 is suitable for abutting against the locking matching portion 23 to limit the connection portion 11 from moving in the direction of disconnection from the connection matching portion 22, wherein along the direction from disconnection to connection between the connection portion 11 and the connection matching portion 22, the inclined surface 121 is inclined in the direction away from the drainage hole 21.

[0049] The direction of the connection part and the connection matching part from disconnection to connection is as follows Figure 1 shown.

[0050] The locking portion 12 is arranged outside the drainage hole 21, and can directly interact with the locking matching portion 23 on the water receiving tray 20 to lock the connecting portion 11 in the drainage hole 21 of the water receiving tray 20. The surface of the locking portion 12 facing the drainage hole 21 is provided with an inclined surface 121, and the inclined surface 121 can change the contact angle between the locking portion 12 and the locking matching portion 23, thereby increasing the friction between the locking portion 12 and the locking matching portion 23, and can prevent the connecting portion 11 from moving in the direction of disconnecting from the connecting matching portion 22.

[0051] Along the direction from disconnection to connection between the connection part 11 and the connection matching part 22, the inclined surface 121 is inclined in the direction away from the drain hole 21. When the connection part 11 attempts to escape in the direction of disconnection from the connection matching part 22, the connection part 11 must overcome the resistance generated by the inclined surface 121 to be disconnected from the connection matching part 22. The provision of the inclined surface 121 can enhance the locking effect, making the connection between the drain plug 10 and the drain hole 21 of the water receiving tray 20 more stable, thereby improving the firmness of the locking of the drain plug 10.

[0052] Optionally, combined Figure 1-3 As shown, a surface of the locking portion 12 facing the drainage hole 21 is provided with a plurality of inclined surfaces 121 , and the plurality of inclined surfaces 121 are sequentially arranged along the circumference of the locking portion 12 .

[0053] The arrangement of multiple inclined surfaces 121 allows for more locking contact points between the locking portion 12 and the locking mating portion 23. The multiple inclined surfaces 121 are arranged sequentially along the circumference of the locking portion 12, and each inclined surface 121 sequentially contacts the locking mating portion 23, gradually increasing the locking force and being able to provide all-round locking along the circumference of the locking portion 12, thereby achieving a more secure locking.

[0054] The multiple inclined surfaces 121 are all inclined in a direction away from the drain hole 21, forming a locking portion 12 that only allows one-way rotation. When the connecting portion 11 attempts to move along the circumference of the locking portion 12 in a direction to release the connection with the connecting matching portion 22, it will encounter resistance from the multiple inclined surfaces 121, which can improve the locking effect between the locking portion 12 and the locking matching portion 23, thereby enhancing the sealing performance of the drain plug 10.

[0055] At the same time, the locking fitting portion 23 of the water receiving tray 20 can contact each inclined surface 121 in sequence, so that the force between the locking fitting portion 23 and the locking portion 12 is evenly distributed, reducing local stress concentration and improving overall stability and durability.

[0056] Optionally, the inclined surfaces 121 are sequentially arranged along the circumference of the locking portion 12 , triangular protrusions are formed between adjacent inclined surfaces, and a plurality of triangular protrusions are sequentially arranged along the circumference of the locking portion 12 to form a ratchet structure.

[0057] The ratchet structure usually only allows one-way rotation, which can improve the self-locking performance of the locking part 12. The inclined surface 121 is the chamfered part of the ratchet structure, and the corner of the triangular protrusion is the barb part of the ratchet structure. When the connecting part 11 rotates into the drain hole 21 of the water receiving tray 20, the chamfered part makes the pre-tightening process of the drain plug 10 easier, and can make it easier to make the locking part 12 and the locking matching part 23 match. After the pre-tightening is completed, under the action of the barb part, the drain plug 10 enters a self-locking state, which can prevent the drain plug 10 from loosening and improve the sealing effect of the drain plug 10.

[0058] Optionally, combined Figure 5 As shown, the connecting portion 11 is suitable for being threadedly connected to the connecting mating portion 22 .

[0059] The threaded connection method can improve the connection stability between the connection part 11 and the connection matching part 22. By utilizing the rotational fixation of the thread, the inner wall of the drain hole 21 can be squeezed when tightened to form an interference fit and improve the sealing effect. At the same time, the spiral structure of the thread has a natural guiding property, so that the connection part 11 can be accurately screwed into the connection matching part 22 along the axis of the thread to achieve precise positioning. The threaded connection method is simple and reliable. The threaded connection between the connection part 11 and the connection matching part 22 can also make the installation and disassembly of the drain plug 10 more convenient.

[0060] Optionally, one of the connecting portion 11 and the connecting matching portion 22 is an internal thread, and the other is an external thread, and the internal thread and the external thread are screwed together so that the connecting portion 11 and the connecting matching portion 22 are threadedly connected.

[0061] The connection part 11 may be an internal thread, and the connection matching part 22 may be an external thread. The connection part 11 may be an external thread, and the connection matching part 22 may be an internal thread. Figure 5 As shown, the present application takes the example that the connecting portion 11 is an external thread 113 and the connecting mating portion 22 is an internal thread 221 .

[0062] Optionally, the pitch of the internal thread 221 is equal to the thread width of the internal thread 221 , and the pitch of the external thread 113 is equal to the thread width of the external thread 113 .

[0063] The pitch of the external thread 113 is as follows Figure 6 As shown in P1, the thread width of the external thread 113 is as follows Figure 6 As shown in P2.

[0064] The pitch of the external thread 113 is equal to the thread width of the external thread 113, so that the number of turns of the external thread 113 is increased and the distribution of the external thread 113 is tighter. At the same time, the pitch of the external thread 113 is equal to the thread width of the external thread 113, which also reduces the inclination angle between the multiple external threads 113, and can increase the friction force, thereby increasing the self-locking property of the drain plug 10. The pitch of the internal thread 221 is equal to the thread width of the internal thread 221, so that the internal thread 221 can achieve the same effect as the external thread 113. In this way, when the external thread 113 of the drain plug 10 and the internal thread 221 of the water receiving tray 20 are screwed together, the external thread 113 and the internal thread 221 can be more closely matched, thereby increasing the sealing of the drain plug 10 and making the water leakage prevention effect of the drain plug 10 better.

[0065] Optionally, combined Figure 1 and Figure 3 As shown, the connecting portion 11 is suitable for being arranged inside the drainage hole 21 , and a guide surface 111 is provided on the surface of the connecting portion 11 facing away from the locking portion 12 , wherein the guide surface 111 is inclined toward the axis of the drainage plug 10 along the direction in which the connecting portion 11 is inserted into the drainage hole 21 .

[0066] The direction of the connection part inserting into the drainage hole is as follows Figure 5 shown.

[0067] During the process of inserting the connection part 11 into the drain hole 21, the surface of the connection part 11 away from the locking part 12 first enters the interior of the drain hole 21. A guide surface 111 is provided on the surface of the connection part 11 away from the locking part 12, which can provide a path guide for the connection part 11 at the starting position of the connection part 11 inserting into the drain hole 21. The guide surface 111 guides the connection part 11 to be smoothly inserted into the drain hole 21, reduces the resistance during insertion, and can more easily insert the connection part 11 into the drain hole 21, thereby improving the installation efficiency and accuracy. Along the direction of the connection part 11 inserting into the drain hole 21, the guide surface 111 is inclined toward the axis of the drain plug 10. When the connection part 11 is inserted into the drain hole along the inclined direction of the guide surface 111, it can fit more closely to the inner wall of the drain hole 21, thereby enhancing the structural stability between the connection part 11 and the drain hole 21.

[0068] Optionally, combined Figure 1-2 and Figure 5 As shown, the drain plug 10 for an air conditioner further includes a handle 30 , which is disposed on a side of the locking portion 12 facing away from the connecting portion 11 .

[0069] The locking portion 12 is suitable for being arranged outside the drain hole 21, and the handle 30 is arranged on the side of the locking portion 12 away from the connecting portion 11, which can provide an easy-to-grip position. By grasping the handle 30, an assist is provided, making the installation and disassembly of the drain plug 10 more convenient.

[0070] Optionally, combined Figure 5 As shown, the drain plug 10 is provided with a cavity 112 , and the cavity 112 is at least partially located in the connecting portion 11 .

[0071] The cavity 112 provided in the drain plug 10 is at least partially located in the connection part 11, which can form a buffer space. The stress on the connection part 11 can be released in the cavity 112, and the cavity 112 can absorb and disperse these stresses, reducing the direct impact on the connection part 11. The provision of the cavity 112 can allow the connection part 11 to deform to a certain extent, increase the bending strength of the connection part 11, and avoid damage to the connection part 11 when it is subjected to external force. When disassembling the drain plug 10, it is also possible to insert a tool into the cavity 112 to more easily grasp or pry the drain plug 10, thereby improving the convenience of disassembling the drain plug 10.

[0072] Optionally, the drain plug 10 is made of rubber.

[0073] The rubber material has good elasticity, and the rubber drain plug 10 can be deformed to adapt to the shape of the drain hole 21 during installation, and can return to its original shape after removal. The rubber drain plug 10 can also fit tightly to the inner wall of the drain hole 21 to form a good sealing effect, effectively preventing water from leaking out of the water receiving tray 20.

[0074] When the drain plug 10 is to be removed, since the drain plug 10 is made of rubber and has a certain elasticity, a greater torque than that during installation needs to be applied to the handle 30 of the drain plug 10 to remove the drain plug 10 .

[0075] An embodiment of the present disclosure provides a water receiving tray assembly, including a water receiving tray 20 and a drain plug 10 for an air conditioner as described in any one of the above embodiments, wherein the water receiving tray 20 is provided with a drain hole 21; the drain plug 10 for an air conditioner as described in any one of the above embodiments is used to close the drain hole 21.

[0076] The water tray assembly provided in the embodiment of the present disclosure includes the drain plug 10 for an air conditioner as described in any one of the above embodiments, and thus has all the beneficial effects of the drain plug 10 for an air conditioner as described in any one of the above embodiments, which will not be repeated here.

[0077] Optionally, combined Figure 5 As shown, the locking matching portion 23 includes a surface of the water receiving tray 20 facing the locking portion 12, and the locking matching portion 23 is provided with a concave-convex structure.

[0078] The concavo-convex structure of the locking matching part 23 can increase the roughness of the surface of the locking matching part 23, thereby providing greater friction between the locking part 12 and the locking matching part 23, and more firmly locking the drain plug 10. At the same time, the concavo-convex structure of the locking matching part 23 can better fill the tiny gap between the locking part 12 and the locking matching part 23, thereby providing a tighter seal and reducing the possibility of water leakage.

[0079] Optionally, the concave-convex structure of the locking fitting portion 23 is provided by a leather grain processing process.

[0080] The leather grain treatment can form a microscopic concave-convex texture on the surface of the water receiving tray 20 facing the locking part 12, increase the friction coefficient of the concave-convex structure surface, and improve the gripping force between the locking part 12 and the locking mating part 23. The concave-convex structure treated with leather grain can fit more closely with the surface of the water receiving tray 20 facing the locking part 12, thereby improving the locking stability of the drain plug 10.

[0081] When the locking portion 12 is suitable for being arranged outside the drain hole 21, and a concave-convex structure is provided on the surface of the locking portion 12 facing the drain hole 21, and the concave-convex structure is suitable for abutting against the locking matching portion 23 to limit the connection portion 11 from moving in the direction of disconnection from the connection matching portion 22, the concave-convex structure of the locking portion 12 and the concave-convex structure of the locking matching portion 23 are interlocked and tightly matched with each other, which can improve the locking stability of the drain plug 10 and improve the sealing performance of the drain plug 10 to the water tray 20.

[0082] When the locking part 12 is a ratchet structure and the locking matching part 23 is treated with leather grain, the friction with the drain plug 10 can be increased. The ratchet structure of the locking part 12 is locked by the inclined surface 121 (equivalent to the ratchet pawl) and the concave-convex structure (equivalent to the ratchet teeth) matched therewith. At this time, the ratchet structure and the concave-convex structure are in line contact, and the highest point of the ratchet concave-convex structure will be stuck in the leather grain concave-convex structure, thereby playing a self-locking role. When the connecting part 11 of the drain plug 10 is screwed into the drain hole 21, the ratchet pawl passes over the ratchet teeth and is stuck by the ratchet teeth, thereby locking the drain plug 10. When the drain plug 10 is not subjected to external force, its own gravity will not be able to offset the friction of the ratchet structure, which can prevent the drain plug 10 from loosening.

[0083] Combination Figure 4 As shown, an embodiment of the present disclosure provides an air conditioner, including an indoor unit, the indoor unit including an evaporator and a water receiving tray assembly as described in any one of the above embodiments, the water receiving tray assembly is arranged below the evaporator to receive condensed water generated by the evaporator.

[0084] The air conditioner provided in the embodiment of the present disclosure includes the water receiving tray assembly as described in any one of the above embodiments, and thus has all the beneficial effects of the water receiving tray assembly as described in any one of the above embodiments, which will not be described in detail here.

[0085] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A drainage plug for air conditioning, characterized in that: The air conditioner includes a water receiving pan, the water receiving pan is provided with a drainage hole, the drainage plug is used to close the drainage hole, the water receiving pan is provided with a connecting matching part and a locking matching part, and the drainage plug includes: A connecting portion, adapted to be connected to the connecting mating portion to close the drainage hole; The locking portion is connected to the connecting portion and is adapted to cooperate with the locking matching portion to limit the connecting portion from moving in a direction of releasing the connection with the connecting matching portion.

2. The drain plug for air conditioner according to claim 1, characterized in that: The locking part is suitable for being arranged outside the drainage hole, and a concave-convex structure is provided on the surface of the locking part facing the drainage hole, which is suitable for abutting against the locking matching part to limit the movement of the connecting part in the direction of disconnecting from the connecting matching part.

3. The drain plug for air conditioner according to claim 1, characterized in that: The locking portion is suitable for being arranged outside the drainage hole, and the surface of the locking portion facing the drainage hole is provided with an inclined surface, which is suitable for abutting against the locking mating portion to limit the movement of the connecting portion in the direction of disconnection from the connecting mating portion, wherein along the direction from disconnection to connection between the connecting portion and the connecting mating portion, the inclined surface is inclined in the direction away from the drainage hole.

4. The drain plug for air conditioner according to claim 3, characterized in that: A surface of the locking portion facing the drain hole is provided with a plurality of inclined surfaces, and the plurality of inclined surfaces are sequentially arranged along the circumference of the locking portion.

5. The drain plug for air conditioner according to any one of claims 1 to 4, characterized in that: The connecting portion is suitable for being threadedly connected with the connecting fitting portion.

6. The drain plug for air conditioner according to any one of claims 1 to 4, characterized in that: The connecting part is suitable for being arranged inside the drainage hole, and a guide surface is arranged on the surface of the connecting part away from the locking part, wherein along the direction in which the connecting part is inserted into the drainage hole, the guide surface is inclined toward the axis of the drainage plug.

7. The drain plug for air conditioner according to any one of claims 1 to 4, characterized in that: Also includes: a handle, disposed on a side of the locking portion facing away from the connecting portion; and / or, The drain plug is provided with a cavity, and the cavity is at least partially located at the connecting portion.

8. A water tray assembly, characterized in that: include: A water tray with drainage holes; The drain plug for an air conditioner according to any one of claims 1 to 7, used to close a drain hole.

9. The water tray assembly according to claim 8, characterized in that: The locking matching part comprises a surface of the water receiving tray facing the locking part, and the locking matching part is provided with a concave-convex structure.

10. An air conditioner, characterized in that: include: The indoor unit comprises an evaporator and a water receiving tray assembly as claimed in claim 8 or 9, wherein the water receiving tray assembly is arranged below the evaporator to receive condensed water generated by the evaporator.

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