Water pipe connector, drainage structure and refrigerator
By designing multiple connection parts and gap structures on the water pipe joints, the problem of inflexible coordination of existing water pipe joints is solved, and adaptation and efficient drainage with multiple drainage pipes is achieved, and siphon phenomenon and abnormal water sound are avoided. Improves standardization and maintenance convenience.
Patent Information
- Application Number
- CN202420499623.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The coordination between existing water pipe joints and water pipes is inflexible, which leads to the need to replace the joints and water pipes at the same time during replacement, which increases cost and operational complexity, and is prone to siphoning and abnormal water sounds, affecting the user experience.
A water pipe joint is designed, and the outer wall of the outlet section is provided with at least two connecting parts, which can be adapted and connected with different types of drain pipes. By setting the gap between the outer diameter of the second outlet section that is smaller than the inner diameter of the drain pipe, water backflow and water leakage are prevented. , and use flat sections and water collecting bucket structure to improve drainage efficiency and sealing.
The adaptive connection between the water pipe joints and various types of drainage pipes is realized, reducing the complexity of replacement, avoiding siphon phenomenon and water sound noise, improving standardization and warehousing coordination, and reducing maintenance costs.
Smart Images
Figure CN222277766U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of water pipe components, and in particular to a water pipe joint, a drainage structure and a refrigerator. Background Art
[0002] The existing water pipe joints and water pipes are matched one to one, that is, one water pipe joint can only be connected to one water pipe. When either the water pipe joint or the water pipe is changed, the use of the other will be affected. The water pipe joint and the water pipe need to be replaced at the same time, which is not conducive to standardization and warehousing coordination, and will increase costs and increase the complexity of replacement operations.
[0003] Therefore, the structure of the water pipe joint needs to be further improved to improve the adaptability of the water pipe joint. Utility Model Content
[0004] In view of this, the purpose of the present application is to provide a water pipe joint, a drainage structure and a refrigerator.
[0005] The technical solution adopted by this application to solve the above technical problems is:
[0006] In the first aspect, the present application provides a water pipe joint, comprising: a joint body, the joint body comprising a water inlet section and a water outlet section connected in sequence, the outer wall of the water outlet section is provided with at least two connecting parts, the connecting parts are used to adapt and connect with a drain pipe, and the types of drain pipes adapted by any two connecting parts are different.
[0007] Optionally, in some embodiments of the present application, the water outlet section includes a first water outlet sub-section connected to the water inlet section, and a second water outlet sub-section connected to the first water outlet sub-section, the connecting portion is located in the first water outlet sub-section, and the outer diameter of the second water outlet sub-section is smaller than the outer diameter of the first water outlet sub-section.
[0008] Optionally, in some embodiments of the present application, the second water outlet sub-segment is a flat segment.
[0009] Optionally, in some embodiments of the present application, the outer diameter of the water inlet section gradually decreases in a direction from the water inlet section to the water outlet section.
[0010] Optionally, in some embodiments of the present application, the water inlet section includes a water collecting sub-section, and the outer wall of the water inlet end of the water collecting sub-section is provided with a water collecting bucket, and the water collecting bucket and the water collecting sub-section form a funnel shape.
[0011] Optionally, in some embodiments of the present application, the water inlet section includes a water collecting sub-section and a circulation sub-section connected in sequence, the circulation sub-section is connected to the water outlet section, the outer diameter of the circulation sub-section gradually decreases in the direction from the water collecting sub-section to the water outlet section, and the outer wall of the connection between the water collecting sub-section and the circulation sub-section is provided with a limiting portion.
[0012] Optionally, in some embodiments of the present application, the water pipe connector is integrally formed, and the material of the water pipe connector is a rigid material.
[0013] In a second aspect, the present application also provides a drainage structure, including the above-mentioned water pipe joint and a drainage pipe, and the drainage pipe is adaptively connected to the connecting part of the water pipe joint.
[0014] Optionally, in some embodiments of the present application, the drain pipe is an S-shaped drain pipe or a corrugated drain pipe, and the connecting portion includes a first connecting portion and a second connecting portion, the S-shaped drain pipe is connected to the first connecting portion, and the corrugated drain pipe is connected to the second connecting portion.
[0015] In a third aspect, the present application also provides a refrigerator, comprising a housing and the above-mentioned drainage structure, wherein the drainage structure is arranged on the housing.
[0016] In summary, due to the adoption of the above technical solution, this application has at least the following beneficial effects:
[0017] The water pipe joint provided in the present application has at least two connecting parts arranged on the outer wall of the water outlet section for connecting to different types of drain pipes. This allows one water pipe joint to be adaptable and connected to multiple types of drain pipes. Appropriate drain pipes can be selected according to different environments, and there is no need to replace the water pipe joint and the drain pipe at the same time. This is conducive to standardization and warehousing coordination, and improves the adaptability of the water pipe joint. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments are briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, but are not intended to limit the present application, wherein:
[0019] Figure 1 A schematic diagram of the structure of a water pipe joint provided in an embodiment of the present application;
[0020] Figure 2 for Figure 1 Enlarged view of E in the middle;
[0021] Figure 3 A structural schematic diagram of a drainage structure provided in an embodiment of the present application;
[0022] Figure 4 for Figure 3 Cross-sectional view along AA direction;
[0023] Figure 5 for Figure 4 Enlarged view of middle C;
[0024] Figure 6 A structural schematic diagram of another drainage structure provided in an embodiment of the present application;
[0025] Figure 7 for Figure 6 Cross-sectional view along direction BB;
[0026] Figure 8 for Figure 7 Enlarged view of middle D;
[0027] Fig. 9 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application;
[0028] Fig.10 A schematic diagram of the structure of another refrigerator provided in an embodiment of the present application;
[0029] Fig.11 A schematic diagram of the structure of the refrigerator compartment of the refrigerator provided in the embodiment of the present application;
[0030] Fig.12 This is a schematic diagram of the bottom plate structure of the refrigerator provided in an embodiment of the present application.
[0031] Description of reference numerals:
[0032] 1-water pipe joint; 11-joint body; 12-water inlet section; 121-water collecting sub-section; 122-circulation sub-section; 13-water outlet section; 131-first water outlet sub-section; 132-second water outlet sub-section; 14-connecting part; 141-first connecting part; 142-second connecting part; 15-water collecting bucket; 16-limiting part;
[0033] 2-drainage structure; 21-drainage pipe; 211-S-type drainage pipe; 2111-connection groove; 212-corrugated drainage pipe;
[0034] 3-refrigerator; 30-box; 31-refrigerating chamber; 311-drain outlet; 32-bottom plate; 321-installation hole; 33-water tray. DETAILED DESCRIPTION
[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.
[0036] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a unique orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.
[0037] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described in this application as exemplary is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles disclosed in the present application.
[0038] To facilitate understanding of the scheme of the present application, the spline curves and arrows used in the drawings are explained here: the components indicated by the spline curves without arrows are solid components, that is, components with solid structures; the components indicated by the spline curves with arrows are virtual components, that is, components without solid structures.
[0039] See also Figures 1 to 8 The embodiment of the present application provides a water pipe joint 1, comprising: a joint body 11, the joint body 11 comprises a water inlet section 12 and a water outlet section 13 connected in sequence, the outer wall of the water outlet section 13 is provided with at least two connecting parts 14, the connecting parts 14 are used to adapt and connect with a drain pipe 21, and the types of drain pipes 21 adapted by any two connecting parts 14 are different.
[0040] The water pipe connector 1 provided in the present application is provided with at least two connection parts 14 on the outer wall of the water outlet section 13, which are used to connect with different types of drain pipes 21, so that one water pipe connector 1 can be adaptively connected with multiple types of drain pipes 21. According to different environments, the corresponding drain pipe 21 can be selected, and there is no need to replace the water pipe connector 1 and the drain pipe 21 at the same time, which is conducive to standardization and warehousing coordination, and improves the adaptability of the water pipe connector 1.
[0041] It should be noted that the water pipe joint 1 provided in the present application is an upper joint, that is, the water outlet section 13 of the water pipe joint 1 is connected to the water inlet end of the drain pipe 21. The water pipe joint 1 can be used to communicate with the area to be drained, drain water to the drain pipe 21, and discharge the water to be drained through the drain pipe 21.
[0042] In some embodiments, see Figure 2 The water outlet section 13 includes a first water outlet sub-section 131 connected to the water inlet section 12, and a second water outlet sub-section 132 connected to the first water outlet sub-section 131. The connecting portion 14 is located at the first water outlet sub-section 131, and the outer diameter of the second water outlet sub-section 132 is smaller than the outer diameter of the first water outlet sub-section 131. In other words, when the drain pipe 21 is connected to the water pipe joint 1 through the connecting portion 14, the second water outlet sub-section 132 is located in the water flow cavity of the drain pipe 21, and the outer diameter of the second water outlet sub-section 132 is smaller than the inner diameter of the drain pipe 21, that is, there is a gap between the outer wall of the second water outlet sub-section 132 and the inner wall of the drain pipe 21.
[0043] In the prior art, the connection between the drain pipe 21 and the water pipe joint 1 is completely sealed. When water flows through the drain pipe 21 to the water receiving device, the water level of the water receiving device rises. Due to temperature, pressure and other reasons, siphoning is likely to occur, that is, water flows back from the water receiving device to the drain pipe 21, or even flows back to the area to be drained. When the temperature is too low, the backflowing water will freeze directly, causing the drain pipe 21 to be blocked; or the backflowing water will continue to flow out of the drain pipe 21 under the action of gravity. Such repeated backflow and forward flow cycles will produce water noise and greatly affect the user experience. Taking the corrugated drain pipe 212 as an example, the conventional solution in the industry is to pierce an air hole in the middle or lower middle part of the corrugated pipe for ventilation to prevent siphoning, but the solution using the air hole has the risk of water leaking directly from the air hole to the outside.
[0044] In this solution, the outer diameter of the second water outlet sub-segment 132 is set to be smaller than the inner diameter of the drain pipe 21, so that a gap is left between the outer wall of the second water outlet sub-segment 132 and the inner wall of the drain pipe 21. When the water pipe joint 1 and the drain pipe 21 are connected, the second water outlet sub-segment 132 cannot always be in complete sealing contact with the inner wall of the drain pipe 21, which can effectively prevent water from flowing back and clogging the drain pipe 21 or causing abnormal water sounds, and can also avoid water leaking to the outside through the air vents of the drain pipe 21.
[0045] Further, in some embodiments, the second water outlet sub-segment 132 is a flat segment. It should be noted that the flat segment has a first surface and a second surface that are arranged oppositely and in parallel, and the distance between the first surface and the second surface is less than the length of the first surface or the second surface perpendicular to the side of the first water outlet sub-segment 131, that is, the flat segment presents wide and thin characteristics. Exemplarily, the flat segment can be rectangular. The width of the flat segment can ensure the water flow of the drainage, and the thinness of the flat segment allows a gap of six months between the first surface and the second surface and the inner wall of the drain pipe 21, so that air can always flow between the second water outlet sub-segment 132 and the inner wall of the drain pipe 21, thereby avoiding the pressure difference causing the water flowing out of the drain pipe 21 to flow back to the drain pipe 21 or the water pipe joint 1.
[0046] In some embodiments, the first water outlet sub-segment 131 is a cylindrical segment. It is understood that the second water outlet sub-segment 132 may also be a cylindrical segment having an outer diameter smaller than that of the first water outlet sub-segment 131 .
[0047] In some embodiments, the outer diameter of the water inlet section 12 gradually decreases in the direction from the water inlet section 12 to the water outlet section 13. When the water pipe joint 1 is connected to the equipment to be drained through the joint body 11, the water outlet section 13 first enters the mounting hole 321 of the equipment to be drained, and the outer diameter gradually increases from small to large. Through extrusion installation, the outer diameter of the water inlet section 12 is adapted to be snap-fitted when it is consistent with the inner diameter of the mounting hole 321, thereby ensuring the reliability and sealing of the assembly.
[0048] In some embodiments, the water inlet section 12 includes a water collecting sub-section 121, and the outer wall of the water inlet end of the water collecting sub-section 121 is provided with a water collecting bucket 15, and the water collecting bucket 15 and the water collecting sub-section 121 form a funnel shape. It can be understood that the water collecting sub-section 121 is connected to the area to be drained, and the water collecting bucket 15 can increase the water collection range, and ensure the sealing of the water flow from the area to be drained to the water pipe joint 1, and prevent the water flow from escaping from the connection.
[0049] In some embodiments, the water inlet section 12 includes a water collecting sub-section 121 and a circulation sub-section 122 connected in sequence, the circulation sub-section 122 is connected to the water outlet section 13, the outer diameter of the circulation sub-section 122 gradually decreases in the direction from the water collecting sub-section 121 to the water outlet section 13, and the outer wall of the connection between the water collecting sub-section 121 and the circulation sub-section 122 is provided with a limiting portion 16. The limiting portion 16 is used to limit the water pipe joint 1 when entering the installation hole 321 of the equipment to be drained, adjust the connection position of the water pipe joint 1 and each area of the equipment to be drained, and make the connection more stable.
[0050] It should be noted that the outer diameter of the water collecting sub-segment 121 may be gradually reduced or unchanged in the direction from the water collecting sub-segment 121 to the circulation sub-segment 122. Preferably, the outer diameter of the water collecting sub-segment 121 remains unchanged, so that the water collecting sub-segment 121 can increase the drainage volume and speed up the drainage efficiency, while the circulation sub-segment 122 can promote the connection reliability with the equipment to be drained.
[0051] In some embodiments, the water pipe connector 1 is integrally formed. Integral forming is beneficial to simplifying the production process of the water pipe connector 1 and is beneficial to standardization and management.
[0052] In some embodiments, the material of the water pipe connector 1 is a rigid material. In other words, when water flows through the water pipe connector 1, the inner diameter of the water pipe connector 1 will not easily increase or decrease, especially the second water outlet sub-segment 132. If the inner diameter of the second water outlet sub-segment 132 is easily expanded by the water flow, it is easy to make the water pipe connector 1 and the drain pipe 21 achieve a completely sealed connection, which is difficult to achieve or will reduce the effect of preventing water backflow.
[0053] On the second hand, please refer again to Figure 2 to Figure 7 The present application also provides a drainage structure 2, comprising the above-mentioned water pipe joint 1 and a drainage pipe 21, wherein the drainage pipe 21 is adaptively connected to the connection portion 14 of the water pipe joint 1.
[0054] In some embodiments, see Figure 2 , Figure 3 and Figure 4 The drain pipe 21 is an S-shaped drain pipe 211, and the connecting portion 14 includes a first connecting portion 141, and the S-shaped drain pipe 211 is connected to the first connecting portion 141. Specifically, a connecting groove 2111 is provided at the water inlet end of the S-shaped drain pipe 211, and the first connecting portion 141 is correspondingly engaged with the connecting groove 2111 to realize the connection between the water pipe connector 1 and the S-shaped drain pipe 211.
[0055] In some embodiments, see Figure 5 , Figure 6 and Figure 7 The drain pipe 21 is a corrugated drain pipe 212, and the connecting portion 14 includes a second connecting portion 142, and the corrugated drain pipe 212 is connected to the second connecting portion 142. It should be noted that there is no limitation on the relative positions of the first connecting portion 141 and the second connecting portion 142, and the first connecting portion 141 can be arranged between the water inlet section 12 and the second connecting portion 142, or the second connecting portion 142 can be arranged between the water inlet section 12 and the first connecting portion 141.
[0056] It can be understood that the outer wall of the water outlet section 13 of the water pipe joint 1 can also be provided with a third connecting portion, a fourth connecting portion, etc., so as to adapt and connect with other types of drainage pipes 21.
[0057] Third, see Fig. 9 and Fig.10 The present application also provides a household appliance, including the above-mentioned drainage structure 2.
[0058] In some embodiments, the household electrical appliances may be appliances that require drainage, such as a refrigerator 3 , an air conditioner, and a washing machine.
[0059] The embodiment of the present application is described by taking refrigerator 3 as an example.
[0060] A refrigerator 3 comprises a box body 30 and the above-mentioned drainage structure 2, wherein the drainage structure 2 is arranged on the box body 30.
[0061] In some embodiments, the box body 30 includes a refrigerating chamber 31, a bottom plate 32 and a water receiving tray 33, the bottom plate 32 is located below the refrigerating chamber 31, the water receiving tray 33 is located inside the bottom plate 32, the water inlet section 12 of the water pipe connector 1 is connected to the refrigerating chamber 31, the connector body 11 passes through the outer shell of the bottom plate 32, the water outlet section 13 is located inside the bottom plate 32, and the water outlet end of the drain pipe 21 is located inside the water receiving tray 33.
[0062] The refrigerating chamber 31 of the refrigerator 3 usually has flowing water in it due to temperature changes, gas is easily liquefied into water, and the stored food releases moisture. If it is not discharged in time, it is easy to freeze and affect the refrigeration performance and refrigeration volume.
[0063] See also Fig.11 The bottom of the refrigerating chamber 31 has a drain port 311. When the drain structure 2 is installed on the box body 30, the water inlet section 12 of the water pipe joint 1 is aligned with the drain port 311 of the refrigerating chamber 31. PE tape or foam can be used to fix it to prevent the foaming material from leaking. Fig.12 The bottom plate 32 of the refrigerator 3 has a mounting hole 321. The surrounding side of the mounting hole 321 can be provided with 5mm to 10mm foam. The water outlet section 13 of the water pipe joint 1 is inserted into the mounting hole 321 of the bottom plate 32. By squeezing and installing, the flow sub-section 122 with gradually increasing outer diameter is clamped in a suitable place to ensure reliable assembly. The water pipe joint 1 and the drain pipe 21 are plugged and installed. The S-shaped drain pipe 211 or the corrugated drain pipe 212 can be selected according to the needs. The water outlet ends of the S-shaped drain pipe 211 and the corrugated drain pipe 212 can be normally installed with the water receiving tray 33.
[0064] It should be noted that the temperature of the refrigerator 3 varies greatly, and the siphon phenomenon is more obvious. That is, when the drainage structure 2 of the refrigerator 3 is in a well-sealed state, and the water in the water receiving pan 33 is higher than the height of the water outlet of the drain pipe 21, since the drainage structure 2 of the refrigerator 3 is connected to the inside of the refrigerating chamber 31, the temperature difference between the compartment temperature inside the refrigerating chamber 31 and the temperature of the water receiving pan 33 is large, which can reach 43° or above. At this time, the water in the water receiving pan 33 will flow back along the drainage structure 2, and even backflow into the refrigerating chamber 31. The temperature of the refrigerating chamber 31 is relatively low, and part of the water sucked back will freeze, causing the drain pipe 21 to be blocked.
[0065] By adopting the drainage structure 2 provided by the present application, the water generated in the cold storage room 31 flows into the drainage pipe 21 through the water pipe joint 1 and the drainage pipe 21, and then is discharged to the outside of the refrigerator 3 by the drainage pipe 21. The water pipe joint 1 has at least two connecting parts 14. When the drainage pipe 21 has a problem and needs to be replaced, the original type of drainage pipe 21 or other types of drainage pipes 21 can be selected as needed, and both can be adapted to the water pipe joint 1. There is no need to replace the water pipe joint 1 and the drainage pipe 21 at the same time, which is very convenient and saves maintenance costs. The flow sub-section 122 of the water pipe joint 1 is squeezed and installed with the mounting hole 321 of the bottom plate 32, which improves the reliability and stability of the assembly, and prevents the drainage structure 2 from shaking in the box body 30 to affect the drainage effect and generate noise. The connection between the water pipe joint 1 and the drainage pipe 21 is not completely sealed, and air can flow freely, which prevents the water in the water receiving tray 33 from flowing back due to pressure, effectively prevents the siphon phenomenon of the refrigerator 3, and improves the drainage effect.
[0066] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.
[0067] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, documents, etc., cited in this application is hereby incorporated by reference in its entirety, except for application history documents that are inconsistent with or conflicting with the content of this application, and documents that limit the broadest scope of the claims of this application (currently or later attached to this application). It should be noted that if the descriptions, definitions, and / or use of terms in the attached materials of this application are inconsistent or conflicting with the content of this application, the descriptions, definitions, and / or use of terms in this application shall prevail.
Claims
1. A water pipe joint, characterized in that: include: The joint body comprises a water inlet section and a water outlet section which are connected in sequence, and the outer wall of the water outlet section is provided with at least two connecting parts, which are used to adapt and connect with a drain pipe, and the types of drain pipes adapted to any two of the connecting parts are different.
2. The water pipe joint according to claim 1, characterized in that: The water outlet section includes a first water outlet subsection connected to the water inlet section and a second water outlet subsection connected to the first water outlet subsection. The connecting portion is located in the first water outlet subsection, and the outer diameter of the second water outlet subsection is smaller than the outer diameter of the first water outlet subsection.
3. The water pipe joint according to claim 2, characterized in that: The second water outlet sub-section is a flat section.
4. The water pipe joint according to claim 1, characterized in that: The outer diameter of the water inlet section gradually decreases along a direction from the water inlet section to the water outlet section.
5. The water pipe joint according to claim 1, characterized in that: The water inlet section comprises a water collecting sub-section, and an outer wall of a water inlet end of the water collecting sub-section is provided with a water collecting bucket, and the water collecting bucket and the water collecting sub-section form a funnel shape.
6. The water pipe joint according to claim 1, characterized in that: The water inlet section includes a water collecting sub-section and a circulation sub-section connected in sequence, the circulation sub-section is connected to the water outlet section, the outer diameter of the circulation sub-section gradually decreases along the direction from the water collecting sub-section to the water outlet section, and the outer wall of the connection between the water collecting sub-section and the circulation sub-section is provided with a limiting portion.
7. The water pipe joint according to claim 1, characterized in that: The water pipe joint is integrally formed, and the material of the water pipe joint is a rigid material.
8. A drainage structure, characterized in that: It comprises the water pipe joint as claimed in any one of claims 1 to 7 and a drain pipe, wherein the drain pipe is adaptively connected to the connecting portion of the water pipe joint.
9. The drainage structure according to claim 8, characterized in that: The drain pipe is an S-shaped drain pipe or a corrugated drain pipe, and the connecting portion includes a first connecting portion and a second connecting portion, the S-shaped drain pipe is connected to the first connecting portion, and the corrugated drain pipe is connected to the second connecting portion.
10. A refrigerator, characterized in that: It comprises a box body and the drainage structure according to any one of claims 8 to 9, wherein the drainage structure is arranged on the box body.