WO2023082802A1

WO2023082802A1 - Drainage pipe assembly and refrigerator

Info

Publication number: WO2023082802A1
Application number: PCT/CN2022/117154
Authority: WO
Inventors: 王小焱; 徐志国; 杨发林
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2021-11-12
Filing date: 2022-09-06
Publication date: 2023-05-19
Also published as: CN216557889U

Abstract

A drainage pipe assembly and a refrigerator. The drainage pipe assembly comprises a drainage pipe body and a floating ball disposed in the drainage pipe body, and the drainage pipe body comprises a first straight hole segment and a second straight hole segment. When there is no accumulated water in the drainage pipe body, the drainage pipe assembly can prevent an external heat load from entering the refrigerator. In addition, when a chamber in the refrigerator is in a negative pressure state, and a liquid seal is not formed in the drainage pipe, the floating ball floats up by means of opening pressure, so that pressure inside and outside the refrigerator chamber is balanced.

Description

Drain pipe assembly and refrigerator

technical field

The utility model relates to the technical field of refrigerators, in particular to a drainage pipe assembly and a refrigerator.

Background technique

The drain pipe of the refrigerator runs through the inner container, the foam layer and the bottom steel plate of the refrigerator, and its function is to discharge the defrosting water and condensed water generated inside the refrigerator to the outside of the cabinet. In the prior art, the drain pipes of refrigerators mostly adopt a straight-pipe design, but when the drainage is completed, the cold energy stored in the refrigerator will overflow out of the box through the drain pipes, and at the same time, the high-humidity air outside the refrigerator will also enter through the drain pipes. In the refrigerator, it will cause serious frosting in the refrigerator, which will affect the refrigeration performance of the refrigerator and increase energy consumption.

Contents of the invention

The utility model provides a drainage pipe assembly to solve the above technical problems.

In order to achieve one of the purposes of the above-mentioned utility model, an embodiment of the utility model provides a drainpipe assembly, which includes a drainpipe body and a floating ball with a diameter of d1 arranged in the drainpipe body, the drainpipe body The upper part of the drain pipe body is provided with a drainage interface, and the lower part of the drain pipe body is formed with a drain hole, and the drain hole is also the water outlet of the drain pipe assembly; wherein the drain pipe body has a first straight hole section with an inner diameter of D1 and The second straight hole segment whose inner diameter is D2, and D2<d1<D1.

As a further improvement of the above-mentioned technology, the drainpipe body further includes a drainage hole section provided at the lower end of the second straight hole section, wherein the drainage hole section includes a tapered drainage section and a Straight hole drainage section.

As a further improvement of the above technology, the inner diameter of the straight hole drainage section is 3mm.

As a further improvement of the above technology, the drainage pipe assembly further includes a drainage interface section provided at the upper end of the first straight hole section, and the drainage interface section is also provided with a sealing ring for connecting with the refrigerator cabinet drainage outlet.

As a further improvement of the above-mentioned technology, the drainpipe assembly also includes an exhaust valve arranged on the side of the drainpipe body, wherein the exhaust valve includes an exhaust valve body, and is connected between the exhaust valve body and the drainpipe body. The exhaust pipe and the sealing ball arranged in the exhaust valve body, and the exhaust pipe is connected to the middle and upper part of the first straight hole section.

As a further improvement of the above technology, the sealing ball is a lightweight hollow ball.

As a further improvement of the above technology, the exhaust pipe is arranged in an upwardly inclined manner, that is, the connection between the exhaust pipe and the drain pipe body is lower than the connection between the exhaust pipe and the exhaust valve body.

As a further improvement of the above technology, the exhaust valve body includes a tapered hole section and a third straight hole section located on the upper part of the tapered hole section, and the upper part of the third straight hole section has an opening, the The opening is provided with a sealing cover to realize the opening or closing of the opening.

As a further improvement of the above technology, at least one set of exhaust valves is provided on the drainpipe body, and when multiple sets of exhaust valves are provided on the drainpipe body, the exhaust valves The circumferential interval of the hole segment is set.

In order to achieve one of the purposes of the utility model above, an embodiment of the utility model also provides a refrigerator, the refrigerator includes a tank inner tank and the above-mentioned drain pipe assembly, and a tank drain pipe extends from the tank inner tank outlet; wherein the drainage interface of the drainage pipe assembly is connected to the drainage outlet of the box body.

Compared with the prior art, the utility model is provided with floating balls in the drain pipe body, on the one hand, there is no water accumulation in the drain pipe body, that is, when the liquid seal cannot be formed, and the external heat load is prevented from entering the refrigerator; on the other hand, The floating ball setting can also be used when the refrigerator compartment is in a negative pressure state, and in the state where no liquid seal is formed, the floating ball can be floated up by the door opening pressure, and then connected to the inside and outside of the refrigerator compartment through the drain pipe body, thereby realizing the refrigerator compartment. Indoor and outdoor pressure balance; moreover, when there is a lot of defrosted water or condensed water in the drain pipe body, the floating ball floats up under the buoyancy of defrosted water and condensed water, and then opens the first straight hole section and the second straight hole The connecting holes between the sections can realize the rapid discharge of defrosting water or condensed water; and when there is water in the drain pipe body, a liquid seal can be formed at the drain hole, thereby realizing double sealing of the drain pipe body. In this way, the loss of cooling capacity in the refrigerator can be avoided, and at the same time, the external heat load can be prevented from entering the refrigerator through the drain pipe assembly, and the problems of frosting and freezing in the refrigerator can be effectively reduced.

Description of drawings

Fig. 1 is a three-dimensional schematic view of the drainpipe assembly in the first embodiment of the present invention.

Fig. 2 is an internal structure diagram of the drain pipe assembly in Fig. 1 .

Fig. 3 is a partial enlarged view of A in Fig. 2 .

Fig. 4 is a partial enlarged view of B in Fig. 2 .

Fig. 5 is a three-dimensional schematic view of the drainpipe assembly in the second embodiment of the present invention.

Fig. 6 is a top view of the drain pipe assembly in Fig. 5 .

Fig. 7 is a three-dimensional schematic diagram of the connection relationship of the drain pipe assembly in the refrigerator in an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the orientations or positional relationships indicated by the terms "center", "front", "rear", "upper", "lower", "inner" and "outer" are based on The orientation or positional relationship shown in the accompanying drawings is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood To limit the utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

Embodiment one

As shown in Figure 1 and Figure 2, the utility model provides a drainpipe assembly 100, the drainpipe assembly 100 includes a drainpipe body 120 and a floating ball 121 with a diameter of d1 arranged in the drainpipe body 120 . Wherein, a drain interface 122 is provided on the upper part of the drain pipe body 120 , and a drain hole 123 is formed on the lower part of the drain pipe body 120 , and the drain hole 123 is also the water outlet of the drain pipe assembly 100 .

Further, the drainpipe body 120 includes a first straight hole section 124 with an inner diameter of D1, a second straight hole section 125 with an inner diameter of D2, and a straight hole section 125 formed between the first straight hole section 124 and the second straight hole section 125. and D2<d1<D1. Wherein, a connection hole 1261 for connecting the first straight hole section 124 and the second straight hole section 125 is formed in the filter section 126 .

During the use of the drain pipe assembly 100, when there is no accumulated water in the second straight hole section 125, that is, when a liquid seal cannot be formed, the floating ball 121 completely blocks the connecting hole 1261, and then Avoid the leakage of cold energy in the refrigerator through the drain pipe assembly 100; and the floating ball 121 can also be in a negative pressure state in the refrigerator compartment without forming a liquid seal. The drain pipe body 120 communicates with the inside and outside of the refrigerator compartment, thereby achieving pressure balance between the inside and outside of the refrigerator compartment.

At the same time, when defrosting water or condensed water needs to be discharged in the refrigerator, the floating ball 121 moves upward under the buoyancy of the water to open the connecting hole 1261, so that the defrosting water or condensed water flows into the second straight hole section and drain through the drain hole. However, as the drainage process proceeds, the buoyancy force received by the buoyant ball 121 gradually decreases, and when the buoyant force is less than the self-gravity of the buoyant ball 121, the buoyant ball moves downward until the connecting hole 1261 is completely blocked; There will still be some residual water in the second straight hole section 125 that cannot be discharged, and then stays at the drainage hole 123 , thereby forming a liquid seal under the action of the surface tension of the water. To sum up, the blockage of the floating ball 121 and the liquid seal at the drain hole 123 prevent the cooling energy in the refrigerator from leaking through the drain pipe assembly, and at the same time effectively prevent the external heat load from entering the refrigerator through the drain pipe assembly 100 .

In other embodiments of the present invention, it is also possible to use only one of the above-mentioned floating ball blockage or liquid seal, thereby avoiding the loss of cooling capacity in the refrigerator.

In an embodiment of the utility model, the floating ball 121 is a lightweight hollow ball. When the refrigerator needs to drain water, the floating ball 121 can be subjected to a greater buoyancy force, so that the floating ball can move upwards, so that the water can be discharged in time.

Optionally, the floating ball 121 can be made of plastic material. Among them, the floating ball made of plastic has the advantages of simple molding and low cost.

As shown in FIG. 3 , in an embodiment of the present utility model, the drainage pipe body 120 further includes a drainage hole section 128 formed at the lower end of the second straight hole section 125 . The drain hole 123 of the drain pipe assembly 100 is formed in the drain hole segment 128 . Wherein in the drain pipe assembly 100, the structure types of the drain holes 123 are also various, such as straight hole type, conical counterbore type and the like.

In this embodiment, the drainage hole 123 is a tapered counterbore. That is, the drainage hole section 128 includes a conical drainage section 128a and a straight hole drainage section 128b located at the lower end of the conical drainage section 128a. The upper end of the straight hole drainage section 128b is connected to the small end of the tapered drainage section 128a. The design of the tapered counterbore can play the role of diversion, so that the residual defrosting water or condensed water in the drain pipe assembly 100 enters the straight hole drainage section 128b, and then forms a liquid seal under the action of surface tension, thereby Avoid the loss of cold in the refrigerator.

Further, the inner diameter of the straight hole drainage section 128b should not be too large. When the inner diameter is too large, the drainage hole 123 needs more water to fill, because the gravity of the larger water droplet will be correspondingly greater, and it will be easier to drain. It is close to the upper limit of the size of the water droplets suspended by the surface tension of the water droplets. At this time, under the action of external force (such as vibration), it is easy to break the balance between the surface tension of the condensed water droplets and the gravity, so that the condensed water drops.

Optionally, when the inner diameter of the straight hole drainage section 128b is 3 mm, not only can the condensed water droplets stay in the straight hole drainage section 128b stably, and it is not easy to drip due to external force, but also can ensure smooth drainage of the drain pipe assembly 100 .

During the use of the drain pipe assembly, the connection between the drain pipe extending from the refrigerator liner and the drain assembly often leaks the cooling capacity in the refrigerator. Therefore, as shown in Figure 4, in this embodiment, the The upper end of the first straight hole section 124 forms a drainage interface section 129, the outer diameter of the drainage interface section is smaller than the outer diameter of the first straight hole section 124, and a drainage interface section 129 is formed inside the drainage interface section 129. Interface 122. The drain interface section 129 is also provided with a sealing ring 127 for connecting with the drain outlet of the refrigerator box.

Wherein, a protrusion 1291 is formed on the outer side of the drainage interface section 129 . And the sealing ring 127 has an outer wall 1271 and an inner wall 1272 . The outer wall 1271 cooperates with the protrusion 1291 , and makes the protrusion 1291 snap into the gap between the outer wall 1271 and the inner wall 1272 .

In this embodiment, the sealing ring 127 is sleeved on the drainage interface 122 . When the drain pipe assembly 100 is installed, the drain pipe extending from the refrigerator box can be inserted into the hole formed by the inner side wall 1272 of the sealing ring 127. At this time, the inner side wall 1272 undergoes elastic deformation, thereby realizing the extension of the refrigerator liner. The drain pipe at is connected to the drain pipe assembly 100 in a sealed manner. Optionally, the sealing ring 127 is made of rubber material.

During the use of the refrigerator, when the user takes out the items in the refrigerator and closes the door and then opens the door again, because the heat load from the outside world enters the inside of the refrigerator when the door was opened last time, the pressure in the compartment decreases, forming a pressure difference with the outside world. Very laborious when causing to open the door body. Therefore, in an embodiment provided by the present utility model, the drain pipe assembly 100 further includes an exhaust valve 140 disposed on the side of the drain pipe body 120 . The exhaust valve 140 includes an exhaust valve body 141 , an exhaust pipe 142 connected between the exhaust valve body 141 and the drain pipe body, and a sealing ball 143 disposed in the exhaust valve body 141 .

Wherein, in order to prevent the sealing ball 143 from entering the drain pipe body 120 from the exhaust valve 140 , in this embodiment, the outer diameter of the sealing ball 143 is larger than the inner diameter of the exhaust pipe 142 .

Further, in order to prevent the water entering the drain pipe body 120 from entering the exhaust valve 140 , the exhaust pipe 142 is connected to the middle and upper part of the first straight hole section 124 . And the exhaust pipe 142 is arranged in an upwardly inclined manner. That is, the connection 1421 between the exhaust pipe 142 and the drain pipe body is lower than the connection 1422 between the exhaust pipe 142 and the exhaust valve body 141 .

In an embodiment of the present invention, the exhaust valve body 141 includes a tapered hole section 1411 and a third straight hole section 1412 located on the upper portion of the tapered hole section 1411 . The upper part of the third straight hole section 1412 has an opening 1413 . Wherein, a through hole 1415 connecting to the outside is formed in the tapered hole section 1411 . And the sealing ball 143 can open or close the through hole 1415 .

Further, a sealing cover 1414 is provided at the opening 1413 to realize the opening or closing of the opening 1413 . The opening 1413 can be used to put or take out the sealing ball 143 .

Optionally, the sealing ball 143 is a lightweight hollow ball, and the sealing ball 143 can move under the action of air pressure difference to open or close the through hole 1415 in the tapered hole section 1411, thereby adjusting The air pressure difference inside and outside the refrigerator reduces the resistance to opening the door.

Since the refrigerator is in a closed state and the interior is in a negative pressure state, it is difficult to open the door. When the user opens the door, under the action of the air pressure difference, the sealing ball 143 moves up, reducing the negative pressure value and reducing the door opening resistance. If the user does not need to open the door, the sealing ball 143 seals the through hole 1415 in the tapered hole section 1411, thereby preventing the loss of cooling capacity of the refrigerator.

Embodiment two

As shown in Fig. 5 and Fig. 6, a drainpipe assembly 200 is also provided in an embodiment of the present invention, which is different from the above-mentioned embodiment in that: the side of the drainpipe body 220 is provided with multiple sets of exhaust valves 240, And the exhaust valves 240 are arranged at intervals along the circumferential direction of the first straight hole section 224 .

The utility model also provides a refrigerator 300 on the basis of the above-mentioned embodiments, and the refrigerator 300 includes a box inner container and the

drain pipe assembly

100 or 200 in the above-mentioned embodiments.

FIG. 7 is a schematic diagram of the connection relationship of the drain pipe assembly 100 in the refrigerator 300 according to an embodiment of the present invention. As shown in Figure 7, a box drain pipe 310 extends from the inner tank of the box, and the box drain pipe 310 is connected to the drain interface 122 of the drain pipe assembly 100 through a sealing ring 127, and then through the drain pipe The assembly 100 discharges defrosted water or condensed water generated in the refrigerator.

To sum up, the beneficial effects of the present utility model are: the present utility model sets the floating ball 121 in the drainpipe body 120, on the one hand, there is no accumulated water in the drainpipe body 120, that is, when the liquid seal cannot be formed, the external environment is avoided. The heat load enters into the refrigerator 300; on the other hand, the floating ball 121 can also be installed in the negative pressure state in the refrigerator compartment, and in the state where no liquid seal is formed, the floating ball can be floated by the pressure of opening the door, and then passed through the drain pipe. The main body 120 communicates with the inside and outside of the refrigerator compartment, thereby achieving pressure balance between the inside and outside of the refrigerator compartment.

Furthermore, when there is a lot of defrosted water or condensed water in the drain pipe body 120, the floating ball 121 floats up under the buoyancy of the defrosted water and condensed water, and then opens the first straight hole section 124 and the second straight hole section. 125 through the connecting hole 1261, so as to realize the rapid discharge of defrosting water or condensed water; and when there is water in the drain pipe body 120, a liquid seal can be formed at the straight hole drainage section 128b, thereby realizing the drain pipe body 120 double sealing, so as to avoid the loss of cooling capacity in the refrigerator, and at the same time, it can also prevent the external heat load from entering the refrigerator through the drain pipe assembly, which can effectively reduce the occurrence of frost and ice in the refrigerator.

And the utility model is also provided with an exhaust valve 140 on the side of the drain pipe body 120, thereby changing the air pressure difference in the refrigerator, reducing the resistance when the refrigerator is opened, making the user experience better, and the overall structure is simple and easy to install , the cost is lower.

It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for the feasible implementation modes of the present utility model, and they are not used to limit the protection scope of the present utility model. Embodiments or modifications should be included within the protection scope of the present utility model.

Claims

A drainpipe assembly, characterized in that it includes a drainpipe body and a floating ball with a diameter of d1 disposed inside the drainpipe body; the upper part of the drainpipe body is provided with a drainage interface, and the lower part of the drainpipe body A drain hole is formed, and the drain hole is the water outlet of the drain pipe assembly; wherein the drain pipe body has a first straight hole section with an inner diameter of D1 and a second straight hole section with an inner diameter of D2, and D2<d1<D1 .
The drainpipe assembly according to claim 1, wherein the drainpipe body further includes a drainage hole section provided at the lower end of the second straight hole section, wherein the drainage hole section includes a tapered drainage section and a A straight hole drainage section at the lower end of the tapered drainage section.
The drainage pipe assembly according to claim 2, wherein the inner diameter of the straight hole drainage section is 3mm.
The drain pipe assembly according to claim 1, characterized in that: the drain pipe assembly further includes a drain interface section arranged at the upper end of the first straight hole section, and the drain interface section is also provided with a Seal ring for body drain outlet connection.
The drainpipe assembly according to claim 1, characterized in that, the drainpipe assembly further comprises an exhaust valve disposed on the side of the drainpipe body, wherein the exhaust valve comprises an exhaust valve body connected to an exhaust valve. The exhaust pipe between the valve body and the drain pipe body and the sealing ball arranged in the exhaust valve body, and the exhaust pipe is connected to the middle and upper part of the first straight hole section.
The drainpipe assembly according to claim 5, wherein the sealing ball is a lightweight hollow ball.
The drainpipe assembly according to claim 5, wherein the exhaust pipe is arranged in an upwardly inclined manner, that is, the joint between the exhaust pipe and the drainpipe body is lower than the joint between the exhaust pipe and the exhaust pipe. The connection of the air valve body.
The drainpipe assembly according to claim 5, wherein the exhaust valve body includes a tapered hole section and a third straight hole section located above the tapered hole section, and the third straight hole section The upper part of the segment has an opening, and a sealing cover is provided at the opening to realize the opening or closing of the opening.
The drainpipe assembly according to claim 5, wherein at least one set of exhaust valves is provided on the drainpipe body, and when multiple sets of exhaust valves are provided on the drainpipe body, the drainage pipe The air valves are arranged at intervals along the circumferential direction of the first straight hole section.
A refrigerator, characterized in that it comprises a box liner and the drainpipe assembly according to any one of claims 1 to 9, a box drain outlet extends from the box liner; wherein the drainpipe The drain interface of the component is connected with the drain outlet of the box body.