Refrigerator drain pipe assembly and refrigerator

Abstract

The invention provides a refrigerator drain pipe assembly and a refrigerator and relates to the technical field of household appliances, the refrigerator drain pipe assembly comprises a drain pipe, a drain valve and an air inlet valve, the drain valve and the air inlet valve are arranged on the drain pipe, the two open ends of the drain pipe are a water inlet and a water outlet respectively, and the drain valve is matched with the water outlet. An air inlet is formed in the side wall of the drainage pipe, the air inlet is communicated with an inner cavity of the drainage pipe, and the air inlet valve is matched with the air inlet. According to the refrigerator drain pipe assembly, the drain function and the ventilation function are separated, air pressure inside and outside the refrigerator can be rapidly balanced by opening the door again after the door of the refrigerator is opened, and door opening is effortless. Meanwhile, external humid and hot air is effectively prevented from entering the chamber or the evaporator chamber through the drainage pipe in the refrigerator refrigeration process, the reliability of the drainage pipe is improved, and refrigerator operation energy consumption is reduced.

Description

Technical Field

[0001] The present application relates to the field of household appliance technology, and in particular to a refrigerator drain pipe assembly and a refrigerator. Background Art

[0002] At present, all air-cooled refrigerators on the market have an automatic defrost function. The defrost heater heats the evaporator to defrost, and the defrosted water is discharged into the water tray through the drain pipe. In this structure, the drain pipe is directly connected to the hot and humid air near the water tray. When the refrigerator is not defrosting, the hot and humid air near the drain pipe will enter the evaporator room through the drain pipe and exchange heat with the cold air in the evaporator room, increasing the energy consumption of the refrigerator. In addition, the hot and humid air near the drain pipe directly enters the evaporator room and encounters the cold evaporator, which is very likely to frost and ice on its surface, increasing the reliability risk of the refrigerator defrosting, and further increasing the energy consumption of the refrigerator during defrosting.

[0003] In order to eliminate the impact of the drain pipe on energy consumption, there is a related technology that sets a water seal at the drain outlet. However, when the user opens the door and closes it again, the hot and humid air from the outside enters the box and the air inside quickly cools down, causing the negative pressure inside and outside to increase instantly, making it very difficult to open the door again. If water is stored in the water seal structure of the drain pipe with this structure, it is easy to produce abnormal noise when opening the door, affecting the user experience.

[0004] In view of the above problems, CN206469571U discloses a drain pipe assembly for a refrigerator and a refrigerator, wherein an air inlet pipe is arranged on the drain pipe, and a water seal structure is arranged at the end of the drain pipe to connect with a water receiving pan. A float structure is arranged in the air inlet pipe to balance the internal and external air pressures, but because the air inlet pipe is arranged on the drain pipe, defrost water can easily enter the air inlet pipe, affecting the opening and closing effect of the float valve. Summary of the invention

[0005] The embodiment of the present application provides a refrigerator drain pipe assembly and a refrigerator, which separates the drainage and ventilation functions. After the refrigerator door is opened and closed, opening the door again can quickly balance the air pressure inside and outside the refrigerator, and opening the door is effortless. At the same time, during the refrigerator refrigeration process, it effectively blocks the external hot and humid air from entering the compartment or evaporator room through the drain pipe, improves the reliability of the drain pipe, reduces the energy consumption of the refrigerator operation, and solves the problem that the existing refrigerator door is laborious to open and prone to abnormal noise.

[0006] In a first aspect, an embodiment of the present application provides a refrigerator drain pipe assembly, comprising a drain pipe, a drain valve disposed on the drain pipe and matched with a drain port, and an air intake valve disposed on the drain pipe and matched with the air intake port;

[0007] The two open ends of the drain pipe are respectively a water inlet and a drain outlet, and the side wall of the drain pipe is provided with an air inlet, and the air inlet is connected to the inner cavity of the drain pipe;

[0008] When the defrost water flows through the drain pipe, the defrost water impacts the drain valve, causing the drain valve to open; when there is no defrost water discharged, the drain valve seals the drain port by its own gravity;

[0009] When the refrigerator door is not opened or is opened for a long time, the air inlet valve is in a closed state; when the refrigerator door is opened, the air inlet valve opens, and after a period of time, the air inlet valve automatically closes due to gravity.

[0010] In a feasible implementation, the drain valve includes a first movable part, the first movable part cooperates with the drain port, and the first movable part is rotatably connected to the drain pipe;

[0011] When no defrost water is discharged, the first movable part seals the drain port and the drain valve is closed; when defrost water flows through the drain pipe, the defrost water impacts the first movable part, and the first movable part rotates to disengage from the drain port, so that the drain valve is opened.

[0012] In a feasible implementation, the drain valve further includes a first connecting portion, the first connecting portion is fixedly connected to the first movable portion, and the first connecting portion is rotatably connected to the drain pipe.

[0013] In a feasible implementation, the outer walls on both sides of the drain pipe are provided with connection holes;

[0014] The first connecting portion includes a connecting shaft, the first movable portion includes a movable baffle, two connecting shafts are oppositely arranged on a side of the movable baffle facing the drain pipe, and the two connecting shafts are rotatably connected to the two connecting holes respectively;

[0015] When no defrost water is discharged, the movable baffle seals the drain port and the drain valve is closed; when defrost water flows through the drain pipe, the defrost water impacts the movable baffle, the movable baffle drives the connecting shaft to rotate, the movable baffle disengages from the drain port, and the drain valve is opened.

[0016] In a feasible implementation, the intake valve includes a second movable portion;

[0017] The second movable part matches the air inlet, and the second movable part is rotatably connected to the edge of the air inlet;

[0018] When the refrigerator door is not opened or is opened for a long time, the second movable part is located in the air inlet, blocking the air inlet, and the air inlet valve is in a closed state; when the refrigerator door is opened, the second movable part rotates under the action of external air pressure to open the air inlet, and the air inlet valve is in an open state; after the air pressure is balanced, the second movable part resets under its own gravity, re-blocks the air inlet, and the air inlet valve closes automatically.

[0019] In a feasible implementation, the air intake valve further includes an abutment portion, and the abutment portion is fixedly arranged on the outer wall of the drain pipe;

[0020] When the second movable portion blocks the air inlet, the second movable portion abuts against the abutting portion.

[0021] In a feasible implementation, the abutting portion includes a valve fixing plate, and the second movable portion includes a valve movable plate;

[0022] The valve fixing plate is fixedly mounted on the outer wall of the drain pipe, and the valve fixing plate is provided with a through hole corresponding to the air inlet;

[0023] The top end of the valve movable plate is rotatably connected to the top inner wall of the air inlet;

[0024] When the refrigerator door is not opened or is opened for a long time, the valve movable plate is located in the air inlet, abuts against the valve fixed plate, blocks the air inlet, and the air inlet valve is in a closed state; when the refrigerator door is opened, the valve movable plate rotates under the action of external air pressure to open the air inlet, and the air inlet valve is in an open state; after the air pressure is balanced, the valve movable plate resets under its own gravity, blocks the air inlet again, and the air inlet valve closes automatically.

[0025] In a feasible implementation, a guide plate is fixedly provided on the inner wall of the drain pipe, and the guide plate corresponds to the air inlet;

[0026] The guide plate and the inner wall of one side of the drain pipe are enclosed to form a cavity, the open end of the cavity faces the drain port, and the air inlet valve is located on the cavity;

[0027] The guide plate and the inner wall of the other side of the drain pipe together form a drainage channel, and the guide plate blocks the drainage channel and the air intake valve.

[0028] In a feasible implementation, the refrigerator drain pipe assembly further includes a defrost water pipe, one end of which is connected to the water inlet of the drain pipe.

[0029] In a feasible implementation, the refrigerator drain pipe assembly further includes a sealing sponge, and the sealing sponge is arranged between the defrost water pipe and the drain pipe.

[0030] In a second aspect, an embodiment of the present application provides a refrigerator, comprising the above-mentioned refrigerator drain pipe assembly.

[0031] The embodiment of the present application provides a refrigerator drain pipe assembly, wherein the two open ends of the drain pipe are respectively a water inlet and a drain outlet, and a drain valve matched with the drain outlet is provided on the drain pipe. When defrost water flows through the drain pipe, the defrost water impacts the drain valve, so that the drain valve is opened; when no defrost water is discharged, the drain valve seals the drain outlet by its own gravity;

[0032] An air inlet is provided on the side wall of the drain pipe, and the air inlet is communicated with the inner cavity of the drain pipe. An air inlet valve matching the air inlet is provided on the drain pipe. When the refrigerator door is not opened or is opened for a long time, the air inlet valve is in a closed state; when the refrigerator door is opened, the air inlet valve opens, and after a period of time, the air inlet valve automatically closes by gravity;

[0033] The refrigerator drain pipe assembly provided by the present application separates the drainage and ventilation functions. After the refrigerator door is opened and closed, the air pressure inside and outside the refrigerator can be quickly balanced when the door is opened again, and the door opening is effortless. At the same time, during the refrigerator refrigeration process, it effectively blocks the external hot and humid air from entering the compartment or evaporator room through the drain pipe, thereby improving the reliability of the drain pipe and reducing the energy consumption of the refrigerator operation.

[0034] This application has the following advantages:

[0035] 1. Separate the drainage and ventilation functions. Opening the door again after opening and closing the refrigerator door can quickly balance the air pressure inside and outside the refrigerator, making it effortless to open the door.

[0036] 2. The air inlet valve and the drain valve in the drain pipe assembly rely on their own gravity to open and close the air inlet and the drain outlet. They have a simple structure, tight sealing, low cost, and do not change the existing production line installation process.

[0037] 3. A guide plate is set inside the air inlet of the drain pipe, and the defrost water flows out along the guide plate to prevent the defrost water from flowing into the air inlet and affecting the normal opening and closing of the air inlet valve, with high reliability BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of the structure of a refrigerator drain pipe assembly provided by the present application;

[0039] Figure 2 It is an exploded view of the drain pipe and its connection structure;

[0040] Figure 3 It is a cross-sectional view of the AA surface of the drainage pipe assembly;

[0041] Figure 4 It is a cross-sectional view of the BB surface of the drain pipe assembly;

[0042] Figure 5 It is a cross-sectional view of the CC surface of the drain pipe assembly.

[0043] Description of reference numerals:

[0044] 1-drain pipe; 2-drain valve; 3-intake valve; 4-sealing sponge; 5-defrosting water pipe;

[0045] 11-water inlet; 12-drain outlet; 13-connecting hole; 14-air inlet; 15-guide plate; 21-connecting shaft; 22-movable baffle; 31-valve fixing plate; 32-valve movable plate; 33-through hole. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0047] At present, all air-cooled refrigerators on the market have an automatic defrosting function. The defrost heater heats the evaporator to defrost, and the defrosted water is discharged into the water tray through the drain pipe. In this structure, the drain pipe is directly connected to the hot and humid air near the water tray. When the refrigerator does not defrost, the hot and humid air near the drain pipe will enter the evaporator room through the drain pipe and exchange heat with the cold air in the evaporator room, increasing the energy consumption of the refrigerator. In addition, the hot and humid air near the drain pipe directly enters the evaporator room and encounters the cold evaporator, which is very easy to frost and ice on its surface, increasing the reliability risk of refrigerator defrosting, and further increasing the energy consumption of the refrigerator during defrosting. In order to eliminate the impact of the drain pipe on energy consumption, there is a related technology that sets a water seal at the drain port, but when the user opens the door and closes it again, the hot and humid air from the outside enters the air in the box and cools down rapidly, causing the instantaneous negative pressure inside and outside to increase, making it very difficult to open the door again. If water is stored in the water seal structure of the drain pipe in this structure, it is easy to produce abnormal noise when opening the door, affecting the user experience.

[0048] In view of the above problems, CN206469571U discloses a drain pipe assembly for a refrigerator and a refrigerator, wherein an air inlet pipe is arranged on the drain pipe, and a water seal structure is arranged at the end of the drain pipe to connect with a water receiving pan. A float structure is arranged in the air inlet pipe to balance the internal and external air pressures, but because the air inlet pipe is arranged on the drain pipe, defrost water can easily enter the air inlet pipe, affecting the opening and closing effect of the float valve.

[0049] The refrigerator drain pipe assembly provided by the present application separates the drainage and ventilation functions. After the refrigerator door is opened and closed, the air pressure inside and outside the refrigerator can be quickly balanced when the door is opened again, and the door opening is effortless. At the same time, during the refrigerator refrigeration process, it effectively blocks the external hot and humid air from entering the compartment or evaporator room through the drain pipe, thereby improving the reliability of the drain pipe and reducing the energy consumption of the refrigerator operation.

[0050] The specific structure of the refrigerator drain pipe assembly provided in the present application is described in detail below in conjunction with the accompanying drawings.

[0051] Reference Figure 1-Figure 5 As shown, an embodiment of the present application provides a refrigerator drain pipe assembly, comprising:

[0052] A drain pipe 1, which can be a conventional water pipe, is vertically arranged, and the two open ends of the drain pipe 1 are respectively a water inlet 11 and a drain outlet 12, and a side wall of the drain pipe 1 is provided with an air inlet 14, and the air inlet 14 is communicated with the inner cavity of the drain pipe 1;

[0053] like Figure 1 As shown, the upper end of the drain pipe 1 is a water inlet 11, the lower end is a drain outlet 12, and an air inlet 14 is arranged on the right side of the middle part of the drain pipe 1. The air inlet 14 can be a rectangular through hole.

[0054] A drain valve 2 is arranged on the drain pipe 1 and matched with the drain port 12. The drain valve 2 is arranged at the bottom of the drain pipe 1. In a natural state, the drain valve 2 blocks the drain port 12 of the drain pipe 1 by its own gravity. When defrost water flows through the drain pipe 1, the defrost water impacts the drain valve 2, so that the drain valve 2 is opened. When no defrost water is discharged, the drain valve 2 seals the drain port 12 by its own gravity.

[0055] An air inlet valve 3 is arranged on the drain pipe 1 and matched with the air inlet 14. The air inlet valve 3 is arranged on the air inlet 14 of the drain pipe 1. In a natural state, the air inlet valve 3 blocks the air inlet 14 of the drain pipe 1 by its own gravity. When the refrigerator door is not opened or is opened for a long time, the air inlet valve 3 is in a closed state; when the refrigerator door is opened, the air inlet valve 3 is opened, and after a period of time, the air inlet valve 3 is automatically closed by gravity.

[0056] Reference Figure 2-Figure 5 As shown, in some embodiments, the drain valve 2 includes a first movable portion, the first movable portion cooperates with the drain port 12, and the first movable portion is rotatably connected to the drain pipe 1;

[0057] When no defrost water is discharged, the first movable part seals the drain port 12 and the drain valve 2 is closed; when defrost water flows through the drain pipe 1, the defrost water impacts the first movable part, and the first movable part rotates to disengage from the drain port 12, so that the drain valve 2 is opened.

[0058] Furthermore, in some embodiments, the drain valve 2 further includes a first connection portion, the first connection portion is fixedly connected to the first movable portion, and the first connection portion is rotatably connected to the drain pipe 1 .

[0059] Specifically, in some embodiments, both outer walls of the drain pipe 1 are provided with connection planes, and connection holes 13 are provided on the two connection planes opposite to each other. The connection holes 13 can be circular blind holes, such as Figure 2 As shown, the bottom end of the drain pipe 1 is an inclined surface, the left end of the bottom surface is low, the right end is high, and the inclination angle can be 30°;

[0060] The first connecting portion includes a connecting shaft 21, and the connecting shaft 21 matches the connecting hole 13. The first movable portion includes a movable baffle 22, and the movable baffle 22 can be an elliptical plate body or a rectangular plate body. The movable baffle 22 can completely block the drain outlet 12. The two connecting shafts 21 are relatively arranged on the side of the movable baffle 22 facing the drain pipe 1. The bottom ends of the two connecting shafts 21 are fixedly connected to the right end of the movable baffle 22, and the tops of the two connecting shafts 21 are rotatably connected to the two connecting holes 13 respectively.

[0061] The thickness of the right side of the movable baffle 22 is large and the mass is high. When the top of the connecting shaft 21 is rotatably connected to an object, when a balanced state is reached, the movable baffle 22 will be in an inclined state with a high left end and a low right end, and the bottom surface of the drain pipe 1 is an inclined surface with a low left end and a high right end. Therefore, when no defrost water is discharged, under the action of its own gravity, the movable baffle 22 will fit the bottom surface of the drain pipe 1 and block the drain port 12. At this time, the drain valve 2 is closed to achieve Figure 3 and Figure 4 state;

[0062] When the defrost water flows through the drain pipe 1, the defrost water impacts the movable baffle 22, and the movable baffle 22 drives the connecting shaft 21 to rotate to the right, and the movable baffle 22 is separated from the drain port 12. At this time, the drain valve 2 is opened, reaching Figure 5 state.

[0063] Reference Figure 2-Figure 5 As shown, in some embodiments, the intake valve 3 includes a second movable portion;

[0064] The second movable part matches the air inlet 14, and the second movable part is rotatably connected to the edge of the air inlet 14;

[0065] When the refrigerator door is not opened or is opened for a long time, the second movable part is located in the air inlet 14, blocking the air inlet 14, and the air inlet valve 3 is in a closed state; when the refrigerator door is opened, the second movable part rotates under the action of the external air pressure, so that the air inlet 14 is opened, and the air inlet valve 3 is in an open state; after the air pressure is balanced, the second movable part is reset under its own gravity, re-blocks the air inlet 14, and the air inlet valve 3 is automatically closed.

[0066] Furthermore, in some embodiments, the air intake valve 3 further includes an abutment portion, and the abutment portion is fixedly disposed on the outer wall of the drain pipe 1;

[0067] When the second movable portion blocks the air inlet 14 , the second movable portion abuts against the abutting portion.

[0068] Specifically, in some embodiments, at least a portion of the outer wall of the drain pipe 1 is a vertical plane, and the air inlet 14 is disposed on the vertical plane;

[0069] The abutting portion includes a valve fixing plate 31, which may be a rectangular plate body and has a size larger than the air inlet 14. The valve fixing plate 31 is fixed on the vertical plane of the drain pipe 1. The valve fixing plate 31 is provided with a through hole 33 corresponding to the air inlet 14. The through hole 33 may be rectangular and slightly smaller than the air inlet 14.

[0070] The second movable part includes a valve movable plate 32, which is a rectangular plate body matching the air inlet 14. The top side wall of the valve movable plate 32 is rotatably connected to the top inner wall of the air inlet 14 through a rotating shaft, so that the lower part of the valve movable plate 32 can swing left and right. Because the size of the valve movable plate 32 is larger than the through hole 33, the right side of the valve movable plate 32 abuts against the left side of the valve fixed plate 31, so that the valve movable plate 32 can only rotate toward the inside of the drain pipe 1;

[0071] When the valve movable plate 32 is in a vertical state, the valve movable plate 32 is located in the air inlet 14, blocking the air inlet 14, so that the outside air cannot enter the drain pipe 1, and the air inlet valve 3 is in a closed state at this time; when the valve movable plate 32 rotates toward the inside of the drain pipe 1, it is separated from the air inlet 14, so that the air inlet 14 is opened, and the outside air enters the drain pipe 1 through the through hole 33 and the air inlet 14 in turn, and enters the refrigerator, and the air inlet valve 3 is in an open state at this time;

[0072] Specifically, when the refrigerator door is not opened or is opened for a long time, the air pressure inside and outside the drain pipe 1 is balanced, and the valve movable plate 32 enters the air inlet 14 under the action of its own gravity, abuts against the valve fixed plate 31, blocks the air inlet 14, and the air inlet valve 3 is in a closed state; when the refrigerator door is opened, the valve movable plate 32 rotates toward the drain pipe 1 under the action of external air pressure, so that the air inlet 14 is opened, and the air inlet valve 3 is in an open state; after the air pressure is balanced, the valve movable plate 32 is reset under its own gravity, re-blocks the air inlet 14, and the air inlet valve 3 is automatically closed.

[0073] Reference Figure 3 As shown, in some embodiments, a guide plate 15 is fixedly provided on the inner wall of the drain pipe 1, and the guide plate 15 corresponds to the air inlet 14;

[0074] The guide plate 15 may be an L-shaped plate body, and the guide plate 15 includes a semicircular inclined plate body and a rectangular vertical plate body. The arc portion of the outer end of the semicircular inclined plate body is fixedly connected to the inner wall of the drain pipe 1, and the straight portion of the outer end of the semicircular inclined plate body is connected to the top of the rectangular vertical plate body. The rectangular vertical plate body is vertically arranged, and the front and rear ends of the rectangular vertical plate body are fixedly connected to the inner wall of the drain pipe 1. The guide plate 15 and the inner wall of one side of the drain pipe 1 are surrounded to form a cavity, and the open end of the cavity faces the drain port 12. The air inlet valve 3 is located on the cavity, and the valve movable plate 32 rotates into the cavity and abuts against the guide plate 15;

[0075] The guide plate 15 and the inner wall of the other side of the drain pipe 1 form a drainage channel, and the guide plate 15 blocks the drainage channel and the air intake valve 3;

[0076] The defrost water flows through the drainage channel to prevent the defrost water from flowing into the air inlet and affecting the normal opening and closing of the air inlet valve. At the same time, the guide plate 15 limits the valve movable plate 32 in the air inlet valve structure.

[0077] Reference Figure 1 As shown, in some embodiments, the refrigerator drain pipe assembly also includes a defrost water pipe 5, which includes a straight pipe body and a collecting cover body. The collecting cover body is arranged on the top of the straight pipe body, and the bottom of the straight pipe body is connected to the water inlet 11 of the drain pipe 1, so as to facilitate the discharge of defrost water.

[0078] Furthermore, in some embodiments, the refrigerator drain pipe assembly also includes a sealing sponge 4, and the sealing sponge 4 is arranged between the defrost water pipe 5 and the drain pipe 1, so as to ensure the sealing between the defrost water pipe 5 and the drain pipe 1.

[0079] According to the above technical features, the working principle of the refrigerator drain pipe assembly provided by the present application in the actual application scenario is:

[0080] When the refrigerator drain pipe assembly is installed, in the natural state, the movable baffle 22 fits against the bottom surface of the drain pipe 1 under the action of its own gravity, blocking the drain port 12. At this time, the drain valve 2 is in a closed state; the valve movable plate 32 is in a vertical state, located in the air inlet 14, blocking the air inlet 14, so that external air cannot enter the drain pipe 1. At this time, the air inlet valve 3 is in a closed state.

[0081] When the defrost water flows through the drain pipe 1, the defrost water impacts the movable baffle 22, and the movable baffle 22 drives the connecting shaft 21 to rotate to the right, and the movable baffle 22 is separated from the drain port 12. At this time, the drain valve 2 is in an open state; when the defrost water is discharged from the drain pipe 1, the movable baffle 22 is reset under the action of its own gravity, and the drain port 12 is re-blocked, and the drain valve 2 returns to a closed state.

[0082] When the refrigerator door is opened, the valve movable plate 32 rotates toward the drain pipe 1 under the action of external air pressure, so that the air inlet 14 is opened, and the air inlet valve 3 is in an open state. When the refrigerator door is not opened or is opened for a long time, the air pressure inside and outside the drain pipe 1 is balanced, and the valve movable plate 32 enters the air inlet 14 under the action of its own gravity, abuts against the valve fixed plate 31, blocks the air inlet 14, and the air inlet valve 3 is in a closed state.

[0083] The refrigerator drain pipe assembly provided by the present application separates the drainage and ventilation functions. After the refrigerator door is opened and closed, the air pressure inside and outside the refrigerator can be quickly balanced when the door is opened again, and the door opening is effortless. At the same time, during the refrigerator refrigeration process, it effectively blocks the external hot and humid air from entering the compartment or evaporator room through the drain pipe, thereby improving the reliability of the drain pipe and reducing the energy consumption of the refrigerator operation.

[0084] The present application also provides a refrigerator, comprising the above-mentioned refrigerator drain pipe assembly.

[0085] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0086] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A refrigerator drain pipe assembly, characterized in that: include; A drainage pipe (1), wherein the two open ends of the drainage pipe (1) are respectively a water inlet (11) and a drainage outlet (12); a side wall of the drainage pipe (1) is provided with an air inlet (14), and the air inlet (14) is communicated with the inner cavity of the drainage pipe (1); a drain valve (2) arranged on the drain pipe (1) and matched with the drain port (12); when defrost water flows through the drain pipe (1), the defrost water impacts the drain valve (2), causing the drain valve (2) to open; when no defrost water is discharged, the drain valve (2) seals the drain port (12) by its own gravity; An air intake valve (3) is arranged on the drain pipe (1) and cooperates with the air intake port (14). When the refrigerator door is not opened or is opened for a long time, the air intake valve (3) is in a closed state; when the refrigerator door is opened, the air intake valve (3) opens, and after a period of time, the air intake valve (3) automatically closes due to gravity.

2. The refrigerator drain pipe assembly according to claim 1, characterized in that: The drainage valve (2) comprises a first movable part, the first movable part cooperates with the drainage port (12), and the first movable part is rotatably connected to the drainage pipe (1); When no defrost water is discharged, the first movable part seals the drain port (12) and the drain valve (2) is closed; when defrost water flows through the drain pipe (1), the defrost water impacts the first movable part, and the first movable part rotates to disengage from the drain port (12), so that the drain valve (2) is opened.

3. The refrigerator drain pipe assembly according to claim 2, characterized in that: The drainage valve (2) further comprises a first connection part, the first connection part is fixedly connected to the first movable part, and the first connection part is rotatably connected to the drainage pipe (1).

4. The refrigerator drain pipe assembly according to claim 3, characterized in that: The outer walls of both sides of the drainage pipe (1) are provided with connection holes (13); The first connecting portion comprises a connecting shaft (21), the first movable portion comprises a movable baffle (22), the two connecting shafts (21) are arranged opposite to each other on a side of the movable baffle (22) facing the drain pipe (1), and the two connecting shafts (21) are respectively rotatably connected to the two connecting holes (13); When no defrost water is discharged, the movable baffle (22) seals the drain port (12) and the drain valve (2) is closed; when defrost water flows through the drain pipe (1), the defrost water impacts the movable baffle (22), the movable baffle (22) drives the connecting shaft (21) to rotate, and the movable baffle (22) is separated from the drain port (12), so that the drain valve (2) is opened.

5. The refrigerator drain pipe assembly according to claim 1, characterized in that: The air intake valve (3) comprises a second movable portion; The second movable part matches the air inlet (14), and the second movable part is rotatably connected to the edge of the air inlet (14); When the refrigerator door is not opened or is opened for a long time, the second movable part is located inside the air inlet (14), blocking the air inlet (14), and the air inlet valve (3) is in a closed state; when the refrigerator door is opened, the second movable part rotates under the action of external air pressure, so that the air inlet (14) is opened, and the air inlet valve (3) is in an open state; After the air pressure is balanced, the second movable part is reset under its own gravity, the air inlet (14) is blocked again, and the air inlet valve (3) is automatically closed.

6. The refrigerator drain pipe assembly according to claim 5, characterized in that: The air intake valve (3) further comprises an abutment portion, wherein the abutment portion is fixedly arranged on the outer wall of the drain pipe (1); When the second movable part blocks the air inlet (14), the second movable part abuts against the abutment part.

7. The refrigerator drain pipe assembly according to claim 6, characterized in that: The abutting portion includes a valve fixing plate (31), and the second movable portion includes a valve movable plate (32); The valve fixing plate (31) is fixedly mounted on the outer wall of the drain pipe (1), and a through hole (33) corresponding to the air inlet (14) is provided on the valve fixing plate (31); The top end of the valve movable plate (32) is rotatably connected to the top inner wall of the air inlet (14); When the refrigerator door is not opened or is opened for a long time, the valve movable plate (32) is located in the air inlet (14) and abuts against the valve fixed plate (31), thereby blocking the air inlet (14), and the air inlet valve (3) is in a closed state; when the refrigerator door is opened, the valve movable plate (32) rotates under the action of external air pressure, so that the air inlet (14) is opened, and the air inlet valve (3) is in an open state; after the air pressure is balanced, the valve movable plate (32) is reset under its own gravity, and the air inlet (14) is blocked again, and the air inlet valve (3) is automatically closed.

8. The refrigerator drain pipe assembly according to claim 7, characterized in that: A guide plate (15) is fixedly provided on the inner wall of the drainage pipe (1), and the guide plate (15) corresponds to the air inlet (14); The guide plate (15) and the inner wall of one side of the drain pipe (1) together form a cavity, the open end of the cavity faces the drain port (12), and the air intake valve (3) is located on the cavity; The guide plate (15) and the inner wall of the other side of the drainage pipe (1) together form a drainage channel, and the guide plate (15) blocks the drainage channel and the air intake valve (3).

9. The refrigerator drain pipe assembly according to claim 1, characterized in that: The refrigerator drain pipe assembly also includes a defrosting water pipe (5) and a sealing sponge (4); One end of the defrost water pipe (5) is connected to the water inlet (11) of the drain pipe (1); and the sealing sponge (4) is arranged between the defrost water pipe (5) and the drain pipe (1).

10. A refrigerator, characterized in that: The invention comprises a refrigerator drain pipe assembly as described in any one of claims 1 to 9.

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