Refrigerator drainage device and refrigerator

Abstract

The present application provides a refrigerator drainage device and a refrigerator, comprising an upper pipeline and a lower pipeline, wherein the lower pipeline comprises a drainage channel and an exhaust channel, wherein when the refrigerator evaporator compartment generates defrost water during operation, the water is collected by the receiving end of the upper pipeline and flows into the drainage channel of the lower pipeline through the connecting end. The defrost water flows in the drainage channel and is finally discharged to the outside of the refrigerator through the downstream side. The exhaust channel can quickly balance the air pressure inside and outside the refrigerator by opening the door again after the door needs to be opened, and the gas flows in the exhaust channel and is finally discharged to the outside of the refrigerator through one end of the exhaust channel close to the connecting port. The present application provides a refrigerator drainage device and a refrigerator having both drainage and ventilation functions, wherein the drainage channel and the exhaust channel are arranged in parallel to form an integrated assembly, which effectively blocks external hot air from entering the compartment or the evaporator room through the drainage channel during refrigeration operation, reduces the energy consumption of refrigerator operation, and improves the reliability of the refrigerator.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and more specifically to a refrigerator drainage device and a refrigerator. Background Art

[0002] Existing air-cooled refrigerators all have an automatic defrosting function. The defrost heater heats the evaporator to defrost, and the defrosted water is discharged to the water receiving tray outside the box through the drain pipe. However, the drain pipe of this structure is directly connected to the hot and humid air near the water receiving tray outside the box. 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 heat load of the refrigerator, thereby increasing the power consumption of the refrigerator.

[0003] 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 form frost and ice on its surface, increasing the risk of refrigerator defrosting reliability and further increasing the energy consumption of the refrigerator during defrosting.

[0004] In order to eliminate the impact of this part of heat load on the energy consumption of the refrigerator, the existing related technology 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 the box cools down rapidly, resulting in a large instantaneous negative pressure inside and outside, making it very difficult to open the door again. If water is stored in the water seal structure of the drain pipe of this structure, it is easy to produce abnormal noise when opening the door, affecting the user experience. Summary of the invention

[0005] In order to solve the above-mentioned existing related technologies, a water seal is set 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 in the box cools down rapidly, resulting in a large instantaneous negative pressure indoors and outdoors, making it very difficult to open the door again.

[0006] A first aspect of the present application provides a refrigerator drainage device, comprising: an upper pipe and a lower pipe;

[0007] The upper pipeline is provided with a receiving end and a connecting end, and the receiving end is connected to the bottom of the refrigerator evaporator compartment;

[0008] The lower pipeline includes an exhaust channel and a drainage channel, the drainage channel has an upstream side and a downstream side, the upstream side is communicated with the connecting end, and the lower pipeline is arranged outside the defrosting box of the refrigerator;

[0009] The exhaust channel and the drainage channel are arranged in parallel, and a side of the exhaust channel close to the drainage channel has a connection port;

[0010] The exhaust passage is connected to the connection end through the connection port, and one end of the exhaust passage close to the connection port is connected to the outside of the refrigerator.

[0011] In a feasible implementation, a closing structure is provided at one end of the drainage channel away from the connecting end, and the closing structure has a closable opening.

[0012] In a feasible implementation, the enclosed structure is one of a duckbill valve, a cover structure, a water seal structure and a necking structure.

[0013] In a feasible implementation, the exhaust channel and the drainage channel are an integrated structure.

[0014] In a feasible implementation, a movable float is provided in the exhaust passage, and an edge of an outer surface of the movable float contacts an inner surface of the exhaust passage;

[0015] An air inlet is provided at one end of the exhaust passage away from the connecting port, and the diameter of the air inlet is smaller than the diameter of the movable float.

[0016] In a feasible implementation, a drainage collection port is provided between the exhaust channel and the drainage channel, the drainage collection port is communicated with the connecting port, and the horizontal position of the drainage collection port is lower than that of the exhaust channel.

[0017] In a feasible implementation, the cross-sectional area of ​​the downstream side of the drainage channel is smaller than the cross-sectional area of ​​the upstream side.

[0018] In a feasible implementation, the movable float is made of a lightweight material, and the mass of the movable float is in the range of 0.1 to 5 g.

[0019] In a feasible implementation, it also includes: a water receiving tray outside the box;

[0020] The external water receiving tray is arranged at the bottom of the refrigerator, and the downstream side extends to the external water receiving tray.

[0021] A second aspect of the present application provides a refrigerator, comprising a refrigerator drainage device as described in any one of the above items.

[0022] As can be seen from the above content, the present application provides a refrigerator drainage device and a refrigerator, which have both drainage and ventilation functions, and the drainage channel and the exhaust channel are arranged in parallel to form an integrated assembly. The drainage channel and the exhaust channel do not interfere with each other, ensuring the exhaust effect of the exhaust channel: opening the door again after it is needed can quickly balance the air pressure inside and outside the refrigerator, and opening the door is effortless. At the same time, during the refrigeration operation, it effectively blocks the external hot air from entering the compartment or evaporator room through the drainage channel, reducing the energy consumption of the refrigerator operation and improving the reliability of the refrigerator. In addition, a closed structure is set at the bottom of the drainage channel, and the water pressure difference and water gravity are used to ensure that the defrost water can smoothly open the cover plate, and the amount of water stored at the bottom is small, eliminating water seal noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the implementation of the present invention, and together with the specification are used to explain the principles of the embodiments of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the implementation of the present invention, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0024] Figure 1 is a schematic structural diagram of a refrigerator drainage device shown in an embodiment of the present application;

[0025] Figure 2 It is a schematic diagram of the structure of a refrigerator shown in an embodiment of the present application.

[0026] Description of Figure Numbers:

[0027] 10-upper pipeline; 20-lower pipeline; 30-external water tray;

[0028] 11- receiving end; 12- connecting end; 21- exhaust channel; 22- drainage channel; 23- connecting port;

[0029] 211 - movable float; 221 - upstream side; 222 - downstream side; 223 - closed structure; 224 - drainage collection port. DETAILED DESCRIPTION

[0030] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the embodiments of the present invention will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the implementation of the embodiments of the present invention.

[0031] Existing air-cooled refrigerators all have an automatic defrost function. The defrost heater heats the evaporator to defrost, and the defrost water is discharged to the water tray outside the box through the drain pipe. However, the drain pipe of this structure is directly connected to the hot and humid air near the water tray outside the box. 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 heat load of the refrigerator, thereby increasing the power consumption of the refrigerator. In order to eliminate the impact of this part of the heat load on the energy consumption of the refrigerator, the existing related technology 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, resulting in a large instantaneous negative pressure inside and outside, making it very difficult to open the door again. If water is stored in the water seal structure of the drain pipe of this structure, it is easy to produce abnormal noise when opening the door, affecting the user experience.

[0032] In order to solve the above problems, the first aspect of the embodiment of the present application provides a refrigerator drainage device, referring to Figure 1 As shown, it includes: an upper pipe 10 and a lower pipe 20, wherein the upper pipe 10 is used as the main collection channel for the water accumulated at the bottom of the evaporator compartment 40, and its receiving end 11 is directly fixedly connected to the lowest point at the bottom of the refrigerator evaporator compartment 40 to ensure that the accumulated water can flow in smoothly. The connecting end 12 is located at the other end of the upper pipe 10, and is designed with an adapter interface for sealing connection with the lower pipe 20.

[0033] Specifically, the receiving end 11 efficiently collects the accumulated water at the bottom of the evaporator compartment 40 to prevent water retention. The connecting end 12 serves as a bridge between the upper pipeline 10 and the lower pipeline 20 to ensure smooth water flow and allow gas to enter the exhaust channel through the connecting port 23.

[0034] The lower pipeline 20 adopts a dual-channel design, namely an exhaust channel 21 and a drainage channel 22. The two are physically arranged in parallel, but their functions are independent. The drainage channel 22 has an upstream side 221 and a downstream side 222. The upstream side 221 is connected to the connection end 12, and the downstream side 222 extends to the outside of the refrigerator defrost box. The upstream side 221 of the drainage channel 22 is seamlessly connected to the connection end 12 of the upper pipeline 10 to ensure that the accumulated water flows in smoothly and unimpeded. The lower pipeline 20 is arranged outside the refrigerator defrost box and is connected to an external water receiving tool for discharging water generated by defrosting. The drainage channel 22 is used to discharge defrost water to avoid hygiene and corrosion problems caused by water retention.

[0035] A connection port 23 is provided on one side of the exhaust channel 21 near the drainage channel 22. This connection port 23 is not only connected to the connection end 12 of the upper pipeline 10 through a sealing design to allow gas circulation, but also ensures that liquid will not enter the exhaust channel 21 by mistake. The other end of the exhaust channel 21 opens to the outside of the refrigerator, providing a natural ventilation path. When the refrigerator is not defrosting, the exhaust channel 21 effectively balances the air pressure inside and outside the refrigerator through the principle of natural ventilation, prevents the outside hot and humid air from entering the evaporator room through the drain pipe, and reduces the heat load of the refrigerator. The connection port 23 not only ensures the independent operation of the drainage channel and the exhaust channel, but also realizes the function of gas exchange, avoiding the problems that may be caused by a single channel.

[0036] The embodiment of the present application realizes the separation of drainage and exhaust by introducing the exhaust channel 21 and the drainage channel 22 arranged in parallel, which fundamentally solves the problem of the drainage pipe being directly connected to the external hot and humid air in the prior art. The existence of the exhaust channel 21 not only balances the air pressure difference inside and outside the refrigerator, reduces the resistance when opening the door, but also avoids the abnormal sound problem caused by the change of air pressure, thereby improving the user experience.

[0037] In some embodiments of the present application, a closing structure 223 is provided at one end of the drainage channel 22 away from the connecting end 12 , and the closing structure 223 has a closable opening.

[0038] The sealing structure 223 is arranged at one end of the drainage channel 22 away from the connection end 12, that is, the end of the downstream side 222 of the drainage channel 22. This position is selected to ensure that the drainage channel 22 can be effectively sealed after the drainage function is completed, preventing external air, dust or insects from entering the refrigerator through the drainage channel 22, and also avoiding the retention of moisture in the drainage channel 22.

[0039] The closing structure 223 is designed to have a closable opening, which means that it can be opened to discharge defrost water as needed, and can also be automatically or manually closed after the drainage is completed to achieve the closure of the drainage channel 22.

[0040] The closed structure 223 has a drainage function, a sealing function, and a function of preventing water retention. Specifically, the drainage function is that during the defrosting cycle, the opening of the closed structure 223 is in an open state, allowing the defrosting water to be smoothly discharged into the water receiving tray outside the refrigerator. The sealing function is that after the drainage is completed, the opening of the closed structure 223 is automatically or manually closed, effectively preventing external air, dust or insects from entering the refrigerator through the drainage channel 22, and keeping the internal environment of the refrigerator clean and hygienic. The function of preventing water retention is to avoid the retention of water in the drainage channel 22 by closing the drainage channel 22, reducing the corrosion, mildew and other problems that may be caused by water retention.

[0041] In this embodiment, the design of the closed structure 223 effectively prevents external pollutants (such as dust and insects) from entering the refrigerator through the drainage channel, thereby maintaining the cleanliness and hygiene of the internal environment of the refrigerator. By preventing moisture from being retained in the drainage channel, corrosion and mildew problems caused by moisture are reduced, and the service life of the refrigerator is extended. Problems such as odor and noise that may be caused by drainage channel problems are reduced, thereby improving the overall user experience.

[0042] In some embodiments of the present application, the enclosed structure 223 is one of a duckbill valve, a cover-like structure, a water seal structure and a necking structure.

[0043] Among them, the duckbill valve is commonly known as a rubber sewage check valve. It is made of elastic butyl rubber and artificial fiber through special processing. When the duckbill valve is in use, one end is connected to the pipe and the other end is flattened into a duckbill shape to form an opening and closing orifice. When there is no internal pressure, the outlet closes under the action of its own elasticity; as the internal pressure gradually increases, the outlet gradually opens to keep the liquid from being discharged at a high flow rate. When the internal pressure rises to a level that can stretch the flattened end, the duckbill opens and the valve opens; if the internal pressure drops to a level that is not enough to stretch it open, the duckbill valve will close and seal automatically. The duckbill valve can prevent floods and sewage backflow. In this embodiment, when a duckbill valve is used, the duckbill valve can use its own elastic characteristics to automatically open during drainage to allow water to flow through; after drainage, the duckbill valve automatically closes, effectively preventing external air, dust and insects from entering the drainage channel, while avoiding water retention.

[0044] The cover-like structure usually includes a cover body, a cover edge and a cover button. The cover body is the main enclosed part, which is usually flat or curved and is used to cover or close a space. The cover edge is the part on the edge of the cover body, which fits with the edge of the enclosed space to ensure the tightness of the cover. The cover button is the protruding part on the cover body, which is convenient for people to lift or operate the cover by hand. In this embodiment, the drainage channel can be closed or opened by opening and closing the cover body. Specifically, when drainage is required, the user can manually open the cover-like structure to allow water to flow through; after drainage is completed, the cover-like structure can be manually closed to prevent the entry of external air and pollutants. The design of the cover-like structure is simple and easy to maintain.

[0045] The core part of the water seal structure is a sealed cavity, usually made of metal or plastic, which can hold liquid and form a sealing layer. It also includes a water inlet and a water outlet, which are used to inject or discharge liquid into the sealed cavity to maintain static pressure balance. The water seal structure can use the sealing properties of liquid (such as water) to isolate the outside air. When water flows in the drainage channel, the liquid in the water seal structure will form a sealing layer to prevent the outside air from entering.

[0046] The water seal structure uses the sealing property of water to effectively prevent the entry of external air and pollutants. When water flows through the drainage channel, the water seal will be temporarily destroyed, but after the drainage is completed, the water seal will quickly recover to ensure the sealing of the drainage channel. It should be noted that the water seal structure needs to be regularly inspected and maintained to ensure that it always maintains a good sealing effect.

[0047] The constriction structure is usually processed by a mold to form a constricted shape on the port. This structure can be an integral structure or a block structure, depending on the processing requirements and material properties. The constriction structure can limit the entry of external air or liquid through the constricted port. The constriction part usually has a certain degree of elasticity and sealing, which can isolate the external medium to a certain extent. The constriction structure utilizes the principle of fluid mechanics. When water flows through, the flow velocity at the constriction increases and the pressure decreases, allowing the water to pass smoothly; while external air and pollutants cannot enter due to the physical restrictions of the constriction.

[0048] The duckbill valve, cover structure, water seal structure and constriction structure proposed in this embodiment are all effective ways to implement the closed structure 223. They can be selected according to specific refrigerator drainage requirements and application scenarios. These structures not only enhance the sealing and functionality of the refrigerator drainage device, but also improve the overall performance and user experience of the refrigerator by preventing the entry of external air and pollutants.

[0049] In some embodiments of the present application, the exhaust channel 21 and the drainage channel 22 are integrated structures. The integrated structure allows the exhaust channel 21 and the drainage channel 22 to be physically connected, but still remain independent in function. By designing the exhaust channel 21 and the drainage channel 22 as an integrated structure, the overall design of the refrigerator drainage device is simplified, the number of components and the complexity of installation are reduced, and the production cost is reduced.

[0050] Since the exhaust channel 21 and the drainage channel 22 are physically connected but functionally independent, this design ensures that the drainage and exhaust functions are realized at the same time without affecting the other function due to the execution of one function. This helps to improve the thermal efficiency of the refrigerator and reduce energy consumption. At the same time, the integrated design makes the space inside the refrigerator more efficient, reduces the occupation of the drainage device in the refrigerator, and improves the overall performance of the refrigerator and user experience. Furthermore, the integrated design makes the maintenance and inspection of the drainage device more convenient, because all related components are concentrated in one structure, reducing the complexity of finding and replacing faulty components.

[0051] In some embodiments of the present application, a movable float 211 is provided in the exhaust channel 21, and the edge of the outer surface of the movable float 211 is in contact with the inner surface of the exhaust channel 21; an air inlet 212 is provided at one end of the exhaust channel 21 away from the connecting port 23, and the diameter of the air inlet 212 is smaller than the diameter of the movable float 211.

[0052] The movable float 211 is designed as a floating body that can move freely in the exhaust passage 21 , and the edge of its outer surface is in close contact with the inner surface of the exhaust passage 21 , ensuring that the passage can be effectively sealed when the movable float 211 moves.

[0053] The air inlet 212 is located at one end of the exhaust passage 21 away from the connection port 23 and is a small hole or slit for allowing external air to enter the exhaust passage under certain conditions. It is important that the diameter of the air inlet 212 is designed to be smaller than the diameter of the active float 211 to ensure that the active float 211 can completely cover the air inlet 212 to prevent unintended gas flow.

[0054] In this embodiment, when the air pressure inside the refrigerator increases, the gas pushes the movable float 211 to move upward, so that the space between the movable float 211 and the air inlet 212 increases, allowing the gas to enter the exhaust channel 21 from the air inlet 212 and be discharged to the outside of the refrigerator through the connecting port 23. When the air pressure inside the refrigerator decreases or returns to balance, the movable float 211 drops due to its own gravity and / or the pressure difference of the gas in the channel, and covers the air inlet 212 again, preventing external air from entering the refrigerator through the air inlet 212.

[0055] Since the diameter of the air inlet 212 is smaller than the diameter of the movable float 211, this design ensures that the movable float 211 will rise and allow gas to enter the exhaust channel 21 through the air inlet only when the air pressure inside the refrigerator is high enough to overcome the gravity of the movable float 211 and / or the gas pressure in the channel. This effectively prevents external air from entering the refrigerator through the air inlet when the air pressure inside the refrigerator is normal or low, and maintains the stability of the internal environment of the refrigerator.

[0056] The design of the movable float 211 and the air inlet 212 in this embodiment realizes an automatic adjustment mechanism, which can automatically adjust the opening and closing of the air inlet 212 according to the changes in the air pressure inside the refrigerator, without external control or maintenance. By ensuring that the air inlet 212 is completely covered by the movable float 211 under normal circumstances, the design effectively prevents external air, dust and pollutants from entering the interior of the refrigerator through the exhaust channel, keeping the internal environment of the refrigerator clean and hygienic. At the same time, the automatic adjustment mechanism helps to maintain the stability of the air pressure inside the refrigerator, reduces the increase in energy consumption caused by air pressure fluctuations, and improves the energy efficiency of the refrigerator. Furthermore, the design of the movable float 211 and the air inlet 212 is simple and durable, reduces the maintenance requirements caused by component failure, and enhances the reliability of the refrigerator exhaust device.

[0057] In some embodiments of the present application, a drainage collection port 224 is provided between the exhaust channel 21 and the drainage channel 22 . The drainage collection port 224 is connected to the connecting port 23 . The horizontal position of the drainage collection port 224 is lower than that of the exhaust channel 21 .

[0058] The horizontal position of the drainage collection port 224 is relatively low to ensure that the water can flow in naturally, and to ensure that the water can flow smoothly into the drainage collection port 224 during the drainage process, rather than flowing in other undesirable directions. At the same time, the drainage collection port 224 is connected to the connecting port 23, and can also receive the condensed water vapor in the exhaust channel 21. It can ensure that the water can flow smoothly into the drainage collection port 224 during the drainage process, rather than flowing in other directions.

[0059] When the water flow generated inside the refrigerator flows to the outside through the drainage channel 22, the water flow will be guided to the drainage collection port 224. Since the collection port is at a low horizontal position, it can effectively collect and concentrate the water flow to prevent it from dispersing or backflowing, ensuring that the water flow can flow in naturally and smoothly, avoiding the problem of poor drainage or backflow, thereby improving the drainage efficiency. Since the water flow in the exhaust channel 21 and the drainage channel 22 are effectively collected and guided, the problem of water accumulation or corrosion inside the exhaust channel 21 caused by poor drainage is reduced, thereby reducing the maintenance cost of the refrigerator. By optimizing the drainage and possible exhaust paths, this design enhances the overall reliability of the refrigerator drainage and exhaust device and increases the service life of the refrigerator.

[0060] In some embodiments of the present application, a cross-sectional area of ​​a downstream side 222 of the drainage channel 22 is smaller than a cross-sectional area of ​​an upstream side 221 .

[0061] The reduction in the cross-sectional area of ​​the downstream side 222 is achieved by implementing a gradually narrowing design in the rear half of the water flow direction in the internal structure of the drainage channel 22. In terms of physical position, this change is continuous, with a smooth transition from the upstream side 221 to the downstream side 222, ensuring that the water flow can pass smoothly and efficiently while avoiding turbulence or excessive resistance.

[0062] Due to the reduction in the cross-sectional area of ​​the downstream side 222, the water flow velocity is naturally accelerated in this area according to the principles of fluid mechanics. This acceleration effect helps to remove the accumulated water more effectively, especially in application scenarios where rapid drainage is required to prevent flooding or keep the environment dry. Secondly, the accelerated water flow can carry and remove sediment more effectively, reduce the risk of blockage, and extend the maintenance cycle and overall life of the drainage system. Finally, this design can also save energy to a certain extent because it can reduce the operating time and energy consumption of drainage equipment such as water pumps by improving drainage efficiency.

[0063] The design in this embodiment that the cross-sectional area of ​​the downstream side 222 is smaller than that of the upstream side not only optimizes the structural layout of the drainage channel 22, but also significantly improves the performance and efficiency of the drainage system, providing an effective solution to technical problems such as poor drainage and easy blockage.

[0064] In some embodiments of the present application, the movable float 211 is made of a lightweight material, and the mass of the movable float 211 is in the range of 0.1 to 5 g.

[0065] The lightweight design of the movable float 211 is achieved by selecting lightweight materials with low density, high strength and corrosion resistance. In terms of physical position, the movable float 211 is set in the exhaust channel 21 and can rise and fall freely with the change of gas flow. When ensuring air intake, the movable float 211 moves up to allow gas to pass; when sealing, the movable float 211 falls back due to its own gravity, closing the air inlet 212 to prevent gas backflow or leakage.

[0066] Lightweight materials make the movable float 211 more responsive to changes in airflow, and can move quickly even under small gas fluctuations, thereby improving the reaction speed and accuracy of the exhaust function. Secondly, the lighter mass reduces the resistance of the movable float 211 in the exhaust channel 21, making the operation of the movable float 211 smoother and reducing energy consumption and wear. Furthermore, lightweight materials often have better corrosion resistance, which can extend the service life of the float and reduce the frequency of maintenance and replacement. Finally, by precisely controlling the mass of the movable float 211, the exhaust function can be further optimized to ensure its stability and reliability in different application scenarios.

[0067] In some embodiments of the present application, reference Figure 2 As shown, it also includes: an external water tray 30; the external water tray 30 is arranged at the bottom of the refrigerator, and the downstream side 222 extends to the external water tray 30, ensuring that the water discharged from the inside of the refrigerator can flow directly and accurately into the external water tray 30, avoiding water leakage to the outside of the refrigerator or accumulation at the bottom of the refrigerator, thereby effectively preventing problems such as moisture, mildew and odor.

[0068] It is understood that the external water tray 30 can be fixed to a suitable position at the bottom of the refrigerator by fasteners (such as screws, buckles, etc.) or adhesives to ensure that it is stable and not easy to move. At the same time, in order to facilitate cleaning and maintenance, the edge of the external water tray 30 is usually designed to be slightly inclined or have a drainage port so that the collected water can be smoothly discharged, such as into the drainage system of the home or a special collection container.

[0069] In this embodiment, the leakage problem that may occur during the drainage process of the refrigerator is effectively solved by providing an external water tray 30, thereby protecting the ground and furniture around the refrigerator from damage. Secondly, by centrally collecting and processing drainage, the external water tray 30 helps to keep the area around the refrigerator clean and dry, reducing the growth of bacteria and mold, thereby maintaining the hygiene and health of the kitchen or storage space. It also improves the energy efficiency of the refrigerator because the increase in humidity at the bottom of the refrigerator or the surrounding environment caused by moisture accumulation is reduced, thereby reducing the extra energy consumed by the refrigerator to maintain a low internal temperature.

[0070] A second aspect of the present application provides a refrigerator. In some embodiments of the present application, continue to refer to Figure 2 As shown, it includes a refrigerator drainage device as any one of the above embodiments.

[0071] As can be seen from the above content, the present application provides a refrigerator drainage device and a refrigerator. When the refrigerator evaporator compartment generates defrost water during operation, the water is collected by the receiving end of the upper pipe and flows into the drainage channel of the lower pipe through the connecting end. The defrost water flows in the drainage channel and is finally discharged to the outside of the refrigerator through the downstream side. At the same time, if the evaporator compartment generates gas during frosting or other processes, the gas will also enter the exhaust channel of the lower pipe through the connecting end of the upper pipe. Opening the door again after the door needs to be opened can quickly balance the air pressure inside and outside the refrigerator. The gas flows in the exhaust channel and is finally discharged to the outside of the refrigerator through one end of the exhaust channel close to the connecting port. The present application provides a refrigerator drainage device and a refrigerator with both drainage and ventilation functions. The drainage channel and the exhaust channel are arranged in parallel to form an integrated assembly. The drainage channel and the exhaust channel do not interfere with each other, ensuring the exhaust effect of the exhaust channel: when the door needs to be opened and closed, the air pressure inside and outside the refrigerator is balanced, and the door is effortless to open. At the same time, during the refrigeration operation, the external hot air is effectively blocked from entering the compartment or the evaporator room through the drainage channel, reducing the energy consumption of the refrigerator operation and improving the reliability of the refrigerator. In addition, a closed structure is set at the bottom of the drainage channel, which uses the water pressure difference and water gravity to ensure that the defrost water can open the cover smoothly, and the amount of water stored at the bottom is small, eliminating water seal noise.

[0072] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

Claims

1. A refrigerator drainage device, characterized in that: include: An upper pipeline (10) and a lower pipeline (20); The upper pipeline (10) is provided with a receiving end (11) and a connecting end (12), and the receiving end (11) is connected to the bottom of the refrigerator evaporator compartment (40); The lower pipeline (20) comprises an exhaust channel (21) and a drainage channel (22), the drainage channel (22) having an upstream side (221) and a downstream side (222), the upstream side (221) being in communication with the connection end (12), and the lower pipeline (20) being arranged outside the defrosting box of the refrigerator; The exhaust channel (21) and the drainage channel (22) are arranged in parallel, and a connection port (23) is provided on a side of the exhaust channel (21) close to the drainage channel (22); The exhaust passage (21) is in communication with the connection end (12) via the connection port (23); one end of the exhaust passage (21) close to the connection port (23) is in communication with the outside of the refrigerator.

2. A refrigerator drainage device according to claim 1, characterized in that: An end of the drainage channel (22) away from the connection end (12) is provided with a closed structure (223), and the closed structure (223) has a closable opening.

3. A refrigerator drainage device according to claim 2, characterized in that: The enclosed structure (223) is one of a duckbill valve, a cover-shaped structure, a water seal structure and a necking structure.

4. A refrigerator drainage device according to claim 1, characterized in that: The exhaust channel (21) and the drainage channel (22) are an integrated structure.

5. A refrigerator drainage device according to claim 1, characterized in that: A movable float (211) is provided in the exhaust channel (21), and the outer surface edge of the movable float (211) is in contact with the inner surface of the exhaust channel (21); An air inlet (212) is provided at one end of the exhaust channel (21) away from the connecting port (23); the diameter of the air inlet (212) is smaller than the diameter of the movable float (211).

6. A refrigerator drainage device according to claim 1, characterized in that: A drainage collection port (224) is provided between the exhaust channel (21) and the drainage channel (22); the drainage collection port (224) is in communication with the connection port (23); and the horizontal position of the drainage collection port (224) is lower than that of the exhaust channel (21).

7. A refrigerator drainage device according to claim 1, characterized in that: The cross-sectional area of ​​the downstream side (222) of the drainage channel (22) is smaller than the cross-sectional area of ​​the upstream side (221).

8. The refrigerator drainage device according to claim 5, characterized in that: The movable float (211) is made of a lightweight material, and the mass of the movable float (211) is in the range of 0.1 to 5 g.

9. The refrigerator drainage device according to claim 1, characterized in that: Also includes: A water tray (30) outside the box; The external water receiving tray (30) is arranged at the bottom of the refrigerator, and the downstream side (222) extends to the external water receiving tray (30).

10. A refrigerator, characterized in that: It comprises a refrigerator drainage device as described in any one of claims 1 to 9.

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