CN110553457A

CN110553457A - Water and air discharging and air inlet composite pipe for refrigerator and refrigerator

Info

Publication number: CN110553457A
Application number: CN201810549299.4A
Authority: CN
Inventors: 石建伟; 王宁; 吴光瑞; 李鹏辉; 陈庆
Original assignee: Qingdao Haier Co Ltd
Current assignee: Qingdao Haier Co Ltd
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2019-12-10

Abstract

the invention relates to a water and air discharging and air inlet composite pipe for a refrigerator and the refrigerator. The drainage and air intake composite pipe comprises: the main pipe section is provided with a water inlet end which is directly communicated with the evaporator chamber and a water outlet end which penetrates through the box body from the water inlet end and extends to the bottom of the water pan, so that defrosting water is discharged to the water pan through the main pipe section, and the water outlet end is sealed by the defrosting water; and the bypass pipe section, from the junction part that is located on the section between water inlet end and the drainage end of autonomic pipeline section outwards extending, the air inlet has been seted up to the extension end of bypass pipe section, and bypass pipe section inside is equipped with a pressure adjustment mechanism, it configures into when there is not the negative pressure in the bypass pipe section automatically to seal the air inlet in order to block the intercommunication between bypass pipe section and the external environment, when there is the negative pressure in the bypass pipe section automatically open the air inlet in order to allow the outside air of box to get into the bypass pipe section, the inside negative pressure of box has been alleviated effectively, the size of the power of opening the door has been reduced, user's use experience has been improved.

Description

Water and air discharging and air inlet composite pipe for refrigerator and refrigerator

Technical Field

The invention relates to refrigeration equipment, in particular to a water and air discharging and air inlet composite pipe for a refrigerator and the refrigerator.

background

With the improvement of living standard of people, refrigeration appliances such as refrigerators are more and more popular. However, in the using process of the refrigerator, due to the self structure and performance, the door opening force of the drawer type compartment door of the refrigerator is larger, which brings adverse effect to the use of users.

The factors influencing the door opening force of the drawer type compartment door of the refrigerator mainly comprise: self-locking force of the slide rail, suction force of the door seal, friction force of the slide rail after load release and the like. In the use process of the refrigerator, negative pressure can occur in the compartment, and the negative pressure can also cause the increase of the door opening force of the drawer type compartment door.

In addition, in the conventional refrigerator, in order to reduce power consumption of the refrigerator and prevent ice blockage of the drain pipe, the drain pipe is sealed with defrosting water stored in the evaporating dish when the refrigerator is used. However, after the drain pipe is sealed with water, the volume change caused by the elasticity of the door seal during opening the door and the temperature change caused by the heat exchange of cold and hot air after closing the door can both cause the inside of the chamber to generate larger negative pressure, so that the door opening force is large when the door is opened and the door is opened again in a short time after the door is closed.

Disclosure of Invention

An object of the first aspect of the present invention is to overcome at least one of the defects in the prior art, and to provide a water and air discharging composite pipe for a refrigerator, so as to reliably and effectively relieve the negative pressure inside the refrigerator using the water and air discharging composite pipe, reduce the door opening force, and improve the use experience of users.

Another object of the first aspect of the invention is to prevent the water and air inlet composite drain pipe from ice blockage and reduce the energy consumption of a refrigerator using the water and air inlet composite drain pipe.

it is a further object of the first aspect of the invention to improve the rapidity and timeliness of relieving negative pressure.

The invention aims at providing a refrigerator with the water and air discharging and air inlet composite pipe.

according to a first aspect of the present invention, there is provided a drain and inlet manifold for a refrigerator having a cabinet defining an evaporator chamber therein with an evaporator disposed therein and a water pan disposed below the cabinet, the drain and inlet manifold comprising:

A main pipe section which is provided with a water inlet end used for being directly communicated with the evaporator chamber and a water outlet end which penetrates through the box body from the water inlet end and extends to the bottom of the water pan, so that defrosting water generated when the evaporator is defrosted is discharged to the water pan through the main pipe section, and the water outlet end is sealed by the defrosting water; and

the bypass pipe section extends outwards from a joint part of the main pipe section located on a section between the water inlet end and the water outlet end, an air inlet is formed in the extending tail end of the bypass pipe section, a pressure adjusting mechanism is arranged inside the bypass pipe section, and the pressure adjusting mechanism is configured to automatically open the air inlet when negative pressure exists in the bypass pipe section so as to allow air outside the box body to enter the bypass pipe section and automatically close the air inlet when negative pressure does not exist in the bypass pipe section so as to block communication between the bypass pipe section and the external environment.

Optionally, the junction is located on a section of the main tube section outside the tank, the bypass tube section extending horizontally outward from the junction.

optionally, the extended end of the bypass pipe section has a side end surface, the air inlet is formed in the center of the side end surface, and the side end surface is a tapered surface gradually converging toward the air inlet.

Optionally, the pressure adjustment mechanism comprises:

The supporting wheel is fixedly arranged in the bypass pipe section and is positioned on one side far away from the air inlet;

one end of the positioning rod is connected with the supporting wheel, and the other end of the positioning rod extends to the air inlet;

The valve plate is slidably arranged on the positioning rod in a penetrating manner and is adjacent to the air inlet; and

and the two ends of the elastic piece are respectively connected to the supporting wheel and the valve plate and are in a compression state, so that the valve plate is allowed to slide towards the direction far away from the air inlet when negative pressure exists in the bypass pipe section, the air inlet is opened, and the valve plate is enabled to abut against and seal the air inlet by virtue of the elastic deformation restoring force of the elastic piece when the negative pressure does not exist in the bypass pipe section.

optionally, the joint portion is a pipe joint extending horizontally from the main pipe section, and the bypass pipe section is sleeved outside the joint portion and detachably connected to the joint portion.

Optionally, the inside of the pipe mouth of the joint part is provided with a first positioning ring extending along the inner peripheral wall thereof, the inside of the bypass pipe section is provided with a second positioning ring extending along the inner peripheral wall thereof, and the support wheel is clamped between the first positioning ring and the second positioning ring.

Optionally, a first convex column is arranged on the inner side surface of the valve plate facing the interior of the bypass pipe section, a through hole penetrating through the first convex column and the valve plate is formed in the first convex column, and the positioning rod is inserted into the through hole; and is

The first convex column is internally provided with a plurality of annular sealing ribs arranged at intervals, and the annular sealing ribs are used for allowing the positioning rod to penetrate through the annular sealing ribs and form airtight sealing with the positioning rod.

Optionally, a first convex edge surrounding the first convex column and arranged at an interval with the first convex column is further arranged on the inner side surface of the valve plate; and is

The elastic piece penetrates through the positioning rod, one end of the elastic piece extends into an annular gap between the first convex column and the first convex edge, and the elastic piece abuts against the inner side surface of the valve block.

optionally, a second convex pillar and a second convex edge surrounding the second convex pillar and arranged at an interval with the second convex pillar are arranged on the outer side surface of the support wheel facing the air inlet;

A blind hole is formed in the second convex column, and the positioning rod is inserted into the blind hole; the elastic piece penetrates through the positioning rod, and the other end of the elastic piece extends into an annular gap between the second convex column and the second convex edge and abuts against the outer side surface of the supporting wheel.

according to a second aspect of the present invention, there is also provided a refrigerator comprising:

a case body, an evaporator chamber and at least one storage chamber are limited in the case body,

The evaporator is arranged in the evaporator chamber and used for cooling the air flowing into the evaporator chamber from the storage compartment;

The water receiving tray is arranged below the box body and used for collecting defrosting water generated in defrosting of the evaporator; and

The drainage and air inlet composite pipe is used for guiding defrosting water generated in the evaporator chamber to flow into the water receiving tray and relieving negative pressure in the box body.

According to the invention, through designing the water and air discharging composite pipe with the main pipe section and the bypass pipe section and specially designing the structures and the positions of the main pipe section and the bypass pipe section, on one hand, defrosting water generated in an evaporator chamber during defrosting of an evaporator can be discharged to the water receiving disc through the main pipe section, and on the other hand, when negative pressure is generated in the box body, an air inlet of the bypass pipe section can be automatically opened through a pressure adjusting mechanism in the bypass pipe section, so that air outside the box body is allowed to enter the bypass pipe section through the air inlet and further enter the box body, thus the negative pressure in the box body is effectively relieved, the size of door opening force is reduced, and the use experience of a user is improved.

Meanwhile, the drainage end of the main pipe section extends to the bottom of the water receiving disc, and the drainage end can be subjected to liquid sealing through defrosting water in the water receiving disc, so that the communication between the main pipe section and the outside is blocked; when negative pressure does not exist in the box body, negative pressure does not exist in the bypass pipe section, and at the moment, the air inlet can be automatically sealed through the pressure adjusting structure, so that the communication between the bypass pipe section and the outside is blocked. Therefore, when negative pressure does not exist in the refrigerator body, the whole refrigerator is in a sealed state, the energy consumption of the refrigerator is reduced, and the phenomenon that the drainage and air inlet composite pipe is blocked by ice is prevented.

The invention solves the technical problem of larger door opening force of the door body in the background technology by improving the drain pipe structure of the traditional refrigerator, breaks through the traditional concept that the drain pipe can only be used for draining water, and expands the function of the common drain pipe to be used for draining defrosting water and introducing external ambient air when negative pressure is generated in the refrigerator, thereby achieving stable and reliable water and air draining and inlet effects without changing the structure of the refrigerator body of the traditional refrigerator.

Furthermore, the side end face, provided with the air inlet, of the extending tail end of the bypass pipe section is further arranged to be a conical surface gradually contracted towards the air inlet, so that a flow guiding effect can be achieved, external air can rapidly flow into the bypass pipe section through the air inlet, and negative pressure in the bypass pipe section and the box body can be timely and rapidly relieved.

Furthermore, the plurality of spaced annular sealing ribs are arranged in the first convex column, so that the valve block can be ensured to slide smoothly along the positioning rod, multi-layer sealing can be formed between the valve block and the positioning rod, air leakage between the valve block and the positioning rod is effectively prevented, the water and air discharging composite pipe is ensured to have a good function of maintaining the pressure in the box body to be stable, and the size of the door opening force of the refrigerator is reliably reduced.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic structural view of a refrigerator having a water and air discharging/feeding composite duct according to one embodiment of the present invention;

FIG. 2 is a schematic block diagram of a drain and inlet manifold in a sealed state according to one embodiment of the present invention;

FIG. 3 is a schematic block diagram of a drain and inlet manifold in an aeration state according to one embodiment of the present invention;

FIG. 4 is a schematic exploded view of the drain-inlet manifold according to one embodiment of the present invention;

Fig. 5 is a schematic cross-sectional view of a drain and inlet manifold in a sealed state according to an embodiment of the present invention.

Detailed Description

The present invention first provides a drain and inlet composite pipe for a refrigerator, and fig. 1 is a schematic structural view of a refrigerator having a drain and inlet composite pipe according to an embodiment of the present invention. Generally, the refrigerator 1 has a cabinet 10 and a water tray 20 disposed below the cabinet 10, an evaporator chamber 11 is defined in the cabinet 10, and an evaporator 30 is disposed in the evaporator chamber 11. Further, the container 10 may include an inner container and an outer container, and an insulating layer (shown with hatching) is formed between the inner container and the outer container to thermally isolate the inside and the outside of the container, so that the storage compartment can maintain a low-temperature storage environment.

fig. 2 is a schematic structural view of a drain and inlet composite pipe in a sealed state according to an embodiment of the present invention, fig. 3 is a schematic structural view of a drain and inlet composite pipe in an aeration state according to an embodiment of the present invention, fig. 4 is a schematic structural exploded view of a drain and inlet composite pipe according to an embodiment of the present invention, and fig. 5 is a schematic cross-sectional view of a drain and inlet composite pipe in a sealed state according to an embodiment of the present invention. For the convenience of observation, the drainage and air inlet composite pipe is partially cut in both fig. 2 and fig. 3.

In particular, referring to fig. 2-5, the drain and inlet manifold 40 of the present invention includes a main pipe section 41 and a bypass pipe section 42.

The main pipe section 41 has a water inlet end 411 for direct communication with the evaporator chamber 11 and a water outlet end 412 extending from the water inlet end 411 through the cabinet 10 to the bottom of the water pan 20, so that defrost water generated when defrosting the evaporator 30 is discharged through the main pipe section 41 to the water pan 20, thereby liquid-sealing the water outlet end 412 with the defrost water. Specifically, the main pipe section 41 may extend to the outside of the tank through an insulation layer formed between the tank liner and the bottom steel of the housing. The defrosting water generated by defrosting the evaporator 30 in the evaporator chamber 11 enters the main pipe section 41 through the water inlet end 411, and the defrosting water flows through the main pipe section 410 and then is discharged to the water pan 20 through the water discharge end 412.

The bypass pipe section 42 extends outward from a joint 413 on a section of the main pipe section 41 between the water inlet end 411 and the water outlet end 412, the extending end of the bypass pipe section 42 is provided with an air inlet 421, and a pressure adjusting mechanism 43 is arranged inside the bypass pipe section 42, wherein the pressure adjusting mechanism 43 is configured to automatically open the air inlet 421 to allow air outside the box body 10 to enter the bypass pipe section 42 when negative pressure exists in the bypass pipe section 42, and automatically close the air inlet 421 to block communication between the bypass pipe section 42 and the external environment when negative pressure does not exist in the bypass pipe section 42. Since the drainage and air intake composite pipe 40 is communicated with the evaporator chamber 11, and the evaporator chamber 11 is communicated with the storage compartment in the box body 10, when negative pressure exists in the box body 10, negative pressure also exists in the bypass pipe section 42; when there is no negative pressure in the tank 10, there is no negative pressure in the bypass section 42. Therefore, when the water and air intake composite pipe 40 is installed in the refrigerator body 10, the existence of negative pressure in the bypass pipe section 42 is equivalent to the existence of negative pressure in the refrigerator body 10.

The invention designs a water and air discharging composite pipe 40 with a main pipe section 41 and a bypass pipe section 42, and designs the structure and the position of the main pipe section 41 and the bypass pipe section 42, on one hand, defrosting water generated in an evaporator chamber 11 when an evaporator 30 is defrosted can be discharged to a water receiving tray 20 through the main pipe section 41, on the other hand, when negative pressure is generated in a box body 10, an air inlet 421 of the bypass pipe section 42 can be automatically opened through a pressure adjusting mechanism 43 in the bypass pipe section 42, air outside the box body 10 is allowed to enter the bypass pipe section 42 through the air inlet 421 and then enter the box body 10, so that the negative pressure in the box body 10 is effectively relieved, the size of door opening force is reduced, and the use experience of users is improved.

Meanwhile, the drainage end 412 of the main pipe section 41 extends to the bottom of the water pan 20, and the drainage end 412 can be sealed by defrosting water in the water pan 20, so that the communication between the main pipe section 41 and the outside is blocked; when there is no negative pressure in the box 10, there is no negative pressure in the bypass pipe section 42, and the pressure adjusting structure 43 can automatically close the air inlet 421, so as to block the communication between the bypass pipe section 42 and the outside. Therefore, when negative pressure does not exist in the refrigerator body 10, the whole refrigerator 1 is in a sealed state, the energy consumption of the refrigerator 1 is reduced, and the phenomenon that the drainage and air inlet composite pipe 40 is blocked by ice is prevented.

More importantly, the invention solves the technical problem of larger door opening force of the door body in the background technology by improving the drain pipe structure of the traditional refrigerator, breaks through the traditional concept that the drain pipe can only be used for draining water, and expands the function of the common drain pipe to the state that the common drain pipe can be used for draining defrosting water and introducing external ambient air when negative pressure is generated in the refrigerator, thereby achieving the stable and reliable water draining and air inlet effects without changing the structure of the refrigerator body of the traditional refrigerator.

In some embodiments of the present invention, junction 413 is located on a section of main tube segment 41 that is external to enclosure 10. That is, since the main pipe section 41 extends from the water inlet end 411 to the water outlet end 412 outside the tank through the insulation layer of the tank 10, a part of the main pipe section 41 is located inside the tank and is in close abutting contact with the insulation layer of the tank, and other sections of the main pipe section 41 are exposed outside the tank. The joint part 413 is positioned outside the box body 10, so that the bypass pipe section 42 is integrally positioned outside the box body 10, and the arrangement of the bypass pipe section 42 can not damage the heat insulation layer of the box body, so that the refrigerator 1 has better working performance, and the energy consumption is further reduced.

further, the bypass tube segment 42 may extend horizontally outward from the junction 413 to facilitate placement of the pressure adjustment mechanism 43 therein. In some alternative embodiments, bypass tube segment 42 may also extend obliquely outward from junction 413.

In some embodiments of the present invention, the extended end of the bypass pipe section 42 has a side end surface 422, the air inlet 421 is formed in the center of the side end surface 422, and the side end surface 422 is a tapered surface gradually shrinking toward the air inlet 421, so as to utilize the surface of this shape to perform a flow guiding function, which helps external air to rapidly flow into the bypass pipe section 42 through the air inlet 421, thereby rapidly relieving the negative pressure in the bypass pipe section 42 and the box body 10 in time.

Specifically, the air inlet 421 may be a circular hole, the cross section of the bypass pipe section 42 is circular, and the central axis of the bypass pipe section 42 passes through the center of the air inlet 421. In other embodiments, the air inlet may also be square, oval, or other suitable shape. The bypass tube section 42 may also be square, oval, or other suitable shape in cross-section.

In some embodiments of the present invention, the pressure adjusting mechanism 43 may include a support wheel 431, a positioning rod 432, a valve sheet 433, and an elastic member 434. The support wheel 431 is fixedly arranged in the bypass pipe section 42 on the side remote from the air inlet 421. The positioning rod 432 has one end connected to the supporting wheel 431 and the other end extended to the air inlet 421. The valve plate 433 is slidably disposed on the positioning rod 432 and adjacent to the air inlet 421. The two ends of the elastic member 434 are respectively connected to the supporting wheel 431 and the valve sheet 433, and are in a compressed state, so that when negative pressure exists in the bypass pipe section 42, the valve sheet 433 is allowed to slide towards a direction away from the air inlet 421 to open the air inlet 421, and when negative pressure does not exist in the bypass pipe section 42, the valve sheet 433 is urged to abut against and close the air inlet 421 by virtue of an elastic deformation restoring force of the elastic member. It is clear that the support wheel 431 is wheel-shaped, the surface of which has notches for the passage of the air flow.

specifically, the valve sheet 433 may be slightly larger than the size of the intake port 421 to effectively block the intake port 421. The size of the valve sheet 433 is smaller than the inner diameter of the bypass pipe section 42, so that an airflow channel can be formed between the valve sheet 433 and the bypass pipe section 42 after the air inlet 421 is opened.

That is, when the drainage and air intake composite pipe 40 is designed, a small amount of compression can be firstly provided to the elastic member 434, so that when there is no negative pressure in the bypass pipe section 42, the valve sheet 433 tends to move toward the air inlet 421 under the elastic deformation restoring force of the elastic member 434, and thus abuts against the side end surface 422 and closes the air inlet 421. When negative pressure occurs in the box body 10, the negative pressure also exists in the bypass pipe section 42, at this time, the outward elastic deformation restoring force of the elastic member 434 received by the valve sheet 433 is smaller than the inward atmospheric pressure received by the valve sheet 433, the valve sheet 433 slides inward along the positioning rod 432 (i.e., slides in a direction close to the supporting wheel 431), and the elastic member 434 is compressed. At this time, the air inlet 421 is opened, and the outside air flows to the flow path between the valve sheet 433 and the bypass pipe section 42 through the air inlet 421, and enters the bypass pipe section 42. The negative pressure in the bypass pipe section 42 is gradually reduced, the negative pressure in the box body 10 is also gradually reduced, when the negative pressure is reduced to zero, the inward atmospheric pressure borne by the valve plate 433 is smaller than the elastic deformation restoring force of the elastic part 434, the elastic part 434 restores deformation, and the valve plate 433 is enabled to slide outwards along the positioning rod 432 until the valve plate abuts against and blocks the air inlet 421.

In some embodiments of the present invention, the joint portion 413 may be a pipe joint extending horizontally from the main pipe section 41, and the bypass pipe section 42 is sleeved outside the joint portion 413 and detachably connected to the joint portion 413, so as to facilitate the assembly of the drainage and air intake composite pipe 40 in the early stage and the maintenance and replacement in the later stage, and reduce the assembly difficulty. Specifically, junction 413 may extend horizontally a length from main tube section 41 to facilitate connection with bypass tube section 42. The inside of the bypass tube section 42 may be provided with internal threads and the outside of the joint 413 may be provided with external threads so that the bypass tube section 42 is threadedly coupled with the joint 413.

in alternative embodiments, the bypass tube segment 42 and the joint 413 may also be removably connected by a snap fit or other suitable means.

In some embodiments of the present invention, the inside of the pipe orifice of the joint part 413 may be provided with a first positioning ring 414 extending along the inner peripheral wall thereof, the inside of the bypass pipe section 42 is provided with a second positioning ring 423 extending along the inner peripheral wall thereof, and the supporting wheel 431 is clamped between the first positioning ring 414 and the second positioning ring 423, so as to realize the fixation.

specifically, the central axis of the first retaining ring 414 may coincide with the central axis of the engagement portion 413, and the central axis of the second retaining ring 423 may coincide with the central axis of the bypass tube segment 42.

in some embodiments of the present invention, a first convex pillar 4331 is disposed on an inner side surface of the valve sheet 433 facing the inside of the bypass pipe section 42, a through hole 4332 penetrating through the first convex pillar 4331 and the valve sheet 433 is opened in the first convex pillar 4331, and the positioning rod 432 is inserted into the through hole 4332, so as to allow the valve sheet 433 to slide along the positioning rod 432.

Further, a plurality of annular sealing ribs 4334 are disposed inside the first protruding column 4331 at intervals, so that the positioning rod 432 can pass through the annular sealing ribs 4334, and an airtight seal is formed between the annular sealing ribs and the positioning rod 432. From this, can enough guarantee that valve block 433 can smoothly slide along locating lever 432, can form multilayer seal again between valve block 433 and locating lever 432, prevent gas leakage between the two effectively, guarantee that drainage air inlet composite pipe 40 has the stable function of good maintenance box 10 internal pressure to the size of refrigerator 1 power of opening has been reduced.

In some embodiments of the present invention, a first flange 4333 surrounding the first protrusion 4331 and spaced apart from the first protrusion 4331 is further disposed on the inner surface of the valve sheet 433. The height of the first ledge 4333 may be lower than the height of the first boss 4331. The elastic element 434 is disposed on the positioning rod 432 in a penetrating manner, and one end of the elastic element 434 extends into an annular gap between the first protruding column 4331 and the first protruding edge 4334 and abuts against an inner side surface of the valve plate 433, so that the mounting stability of the elastic element 434 is improved.

specifically, the elastic member 434 may be a spring.

in some embodiments of the present invention, the outer surface of the supporting wheel 431 facing the air inlet 421 is provided with a second protruding pillar 4311 and a second protruding edge 4312 surrounding the second protruding pillar 4311 and spaced apart from the second protruding pillar 4311. The height of the second ledge 4312 may be lower than the height of the second boss 4311. The second protruding column 4311 has a blind hole 4313 therein, and the positioning rod 432 is inserted into the blind hole 4313, so as to be fixed to the supporting wheel 431. The elastic element 434 is disposed on the positioning rod 432 in a penetrating manner, and the other end of the elastic element 434 extends into an annular gap between the second protruding column 4311 and the second protruding edge 4313 and abuts against the outer side surface of the supporting wheel 431, so that the mounting stability of the elastic element 434 is further improved.

The invention also provides a refrigerator 1 which comprises a refrigerator body 10, an evaporator 30 and a water pan 20. The cabinet 10 defines an evaporator chamber 11 and at least one storage compartment 12 therein. The evaporator 30 is provided in the evaporator chamber 11 to cool the air flowing from the storage compartment 12 into the evaporator chamber 11. The drain pan 20 is disposed under the cabinet 10 to collect defrost water generated when the evaporator 30 is defrosted.

In particular, the refrigerator 1 further includes the drain and inlet manifold 40 described in any of the above embodiments for guiding the defrosting water generated in the evaporator chamber 11 to flow into the defrosting pan 20 and relieving the negative pressure in the cabinet 10, thereby effectively reducing the magnitude of the door opening force of the refrigerator 1.

it should be understood by those skilled in the art that the terms "upper", "lower", "inner", "outer", "lateral", "front", "rear", etc. used in the embodiments of the present invention are used as terms for indicating the orientation or positional relationship with respect to the actual usage state of the combined drain and inlet pipe 40 after being installed in the refrigerator 1, and these terms are only used for convenience of describing and understanding the technical solution of the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation, and thus, should not be construed as limiting the present invention.

thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. The utility model provides a compound pipe of drainage and air intake for refrigerator, refrigerator has the box and sets up in the water collector below the box, it has the evaporimeter room to inject in the box, be provided with the evaporimeter in the evaporimeter room, its characterized in that, compound pipe of drainage and air intake includes:

2. the water and air intake composite tube of claim 1,

The junction is located on a section of the main tube segment outside the tank, and the bypass tube segment extends horizontally outward from the junction.

3. The water and air intake composite tube of claim 2,

The extending tail end of the bypass pipe section is provided with a side end surface, the air inlet is formed in the center of the side end surface, and the side end surface is a conical surface gradually shrinking towards the direction of the air inlet.

4. The composite drain and inlet pipe of claim 2, wherein the pressure adjustment mechanism comprises:

5. The water and air intake composite tube of claim 4,

The joint part is a pipeline interface horizontally extending from the main pipe section, and the bypass pipe section is sleeved outside the joint part and detachably connected with the joint part.

6. The water and air intake composite tube of claim 5,

The inner side of the pipe orifice of the joint part is provided with a first positioning ring extending along the inner peripheral wall of the joint part, the inner part of the bypass pipe section is provided with a second positioning ring extending along the inner peripheral wall of the bypass pipe section, and the supporting wheel is clamped between the first positioning ring and the second positioning ring.

7. The water and air intake composite tube of claim 4,

a first convex column is arranged on the inner side surface of the valve plate facing the interior of the bypass pipe section, a through hole penetrating through the first convex column and the valve plate is formed in the first convex column, and the positioning rod is inserted into the through hole; and is

8. The water and air intake composite tube of claim 7,

The inner side surface of the valve plate is also provided with a first convex edge which surrounds the first convex column and is arranged at an interval with the first convex column; and is

9. The water and air intake composite tube of claim 4,

a second convex column and a second convex edge which is arranged around the second convex column and is separated from the second convex column are arranged on the outer side surface of the supporting wheel facing the air inlet;

10. A refrigerator, characterized by comprising:

The drain and inlet manifold as defined in any one of claims 1 to 9, for directing defrost water produced in said evaporator chamber to flow into said drip pan and relieving negative pressure in said tank.