CN220017868U - Drain pipe for refrigerator and refrigerator - Google Patents

Abstract

The utility model relates to a drain pipe for a refrigerator and the refrigerator. The drain pipe of the refrigerator includes: the main pipe body is provided with an inner end port communicated with a water outlet of the refrigerator and an outer end port opposite to the inner end port, the outer end port is closed, and a water outlet is formed in the peripheral wall of a preset section, positioned outside the refrigerator, of the main pipe body; and an adjusting device configured to be movably disposed inside the main pipe body in an axial direction of the main pipe body according to the amount of water in the main pipe body, to adjust an overflow area of the drain hole for draining water such that the overflow area of the drain hole is positively correlated with the amount of water in the main pipe body. The drain pipe does not need to be externally connected with a corrugated pipe, and water discharged from a water outlet of the refrigerator can directly enter the evaporation dish through the drain pipe; in addition, the adjusting device is arranged in the main pipe body, so that the external space is not occupied additionally, the drain pipe is suitable for small installation space, and the convenience and sealing performance of the drain pipe assembly are improved.

Description

Drain pipe for refrigerator and refrigerator

Technical Field

The utility model relates to a refrigeration technology, in particular to a drain pipe for a refrigerator and the refrigerator.

Background

In daily life, people mainly use refrigerators to cool and store foods. Along with the continuous increase of refrigerator functions, components carried in the compressor bin are more and more, the operation space is smaller and smaller, and the installation difficulty of the drainage connecting pipe is larger and more. The existing installation scheme of the drainage connecting pipe is mainly manual installation, so that a plurality of restrictions are put on the operation procedure, and the drainage connecting pipe is required to be installed first and then other parts are required to be installed, so that the process optimization is not facilitated. In addition, the scheme is that the outlet of the drain pipe is as close to the outer side as possible in design so as to be convenient to install, but the foaming layer at the corresponding position of the drain pipe is thinner in this way, and condensation is easily generated outside the corresponding position.

Disclosure of Invention

An object of the first aspect of the present utility model is to overcome at least one of the drawbacks of the prior art and to provide a drain pipe for a refrigerator adapted for small space installation to simplify the installation process of the drain pipe.

Another object of the first aspect of the utility model is to improve the sealing properties of the drain pipe.

A further object of the first aspect of the utility model is to simplify the construction of the drain pipe.

An object of a second aspect of the present utility model is to provide a refrigerator having a drain pipe.

According to a first aspect of the present utility model, there is provided a drain pipe for a refrigerator, comprising:

the main pipe body is provided with an inner end port communicated with the water outlet of the refrigerator and an outer end port opposite to the inner end port, the outer end port is arranged in a closed mode, and a water outlet is formed in the peripheral wall of a preset section, located outside the refrigerator, of the main pipe body; and

and the adjusting device is configured to be movably arranged inside the main pipe body along the axial direction of the main pipe body according to the water quantity in the main pipe body so as to adjust the overflow area of the drain hole for draining water, so that the overflow area of the drain hole is positively related to the water quantity in the main pipe body.

Optionally, the adjusting device is configured to move in the axial direction of the main pipe body under the action of the water pressure in the main pipe body and the elastic restoring force of the adjusting device to adjust the overflow area of the drain hole.

Optionally, the drain pipe further comprises:

the end cover is fixedly connected to the main pipe body and is used for blocking an outer end port of the main pipe body; and is also provided with

The adjusting device comprises a water baffle and a spring which stretches along the axial direction of the main pipe body, wherein two ends of the spring are respectively fixedly connected with the water baffle and the end cover, and the circumferential surface of the water baffle is in fluid seal with the inner pipe wall of the main pipe body.

Optionally, the drain hole diverges from the inner end port of the main tube body to the outer end port of the main tube body.

Optionally, the drain hole has a triangular shape with a tip directed toward the inner end port of the main tube body.

Optionally, the number of the drain holes is plural, and the plural drain holes are uniformly and intermittently arranged along the circumferential direction of the preset section.

Optionally, first ends of the plurality of drain holes adjacent to the inner end port direction are all on a first circumference concentric with the main pipe body; and is also provided with

Second ends of the plurality of drain holes adjacent to the outer end port direction are each on a second circumference concentric with the main tube body.

Optionally, a clamping structure is arranged on the peripheral wall of the main pipe body adjacent to the outer end port; and is also provided with

The periphery wall of the end cover is provided with a clamping column which is clamped in the clamping structure, so that the end cover is fixedly connected to the main pipe body.

Optionally, the clamping structure is an L-shaped clamping groove penetrating through the peripheral wall of the main pipe body along the radial direction of the main pipe body, and the L-shaped clamping groove comprises a first section extending axially inwards from the outer end port of the main pipe body and a second section extending from the extending tail end of the first section towards the circumferential direction of the main pipe body; and is also provided with

The clamping post is configured to operably clamp into a first section of the L-shaped clamping groove along an axial direction of the main pipe body and then to rotatably clamp into a second section of the L-shaped clamping groove.

Optionally, a limiting pit recessed downwards is arranged on a groove wall of the second section adjacent to the outer end port; and is also provided with

The bottom of joint post is equipped with downward convex back-off, after the joint post card is gone into the joint structure, the back-off restriction is in the spacing pit to in the circumference of the main body the restriction end cover with the relative movement of the main body.

According to a second aspect of the present utility model, there is also provided a refrigerator including:

a tank having a drain port for draining condensed water generated inside; and

the drain pipe according to any one of the above aspects, wherein an inner end port of the drain pipe communicates with the drain port.

Unlike the prior art in which the drain pipe for a refrigerator of the present utility model includes a main pipe body having an inner end port and an outer end port and an adjusting device provided in the main pipe body, the outer end port of the main pipe body is closed, and condensed water is not discharged from the outer end port of the main pipe body. And the drain hole of drain pipe is offered on the week wall of main pipe body default section, and adjusting device can be according to the internal water yield of main pipe along the axial motion of main pipe body to the overflow area that is used for the drainage of regulation drain hole makes the overflow area of drain hole and the internal water yield of main pipe forward correlation. That is, when the water quantity in the main pipe body is large, the overflow area of the water discharge hole is increased by the movement of the adjusting device, so that the water in the main pipe body is discharged as soon as possible, and the normal water discharge function of the water discharge pipe is realized. The drain pipe does not need to be externally connected with a corrugated pipe, and water discharged from a water outlet of the refrigerator can directly enter the evaporation dish through the drain pipe; in addition, the adjusting device is arranged in the main pipe body, so that the external space is not occupied additionally, the drain pipe is suitable for small installation space, and the convenience of drain pipe assembly is improved.

When the water quantity in the main pipe body is small, the overflow area of the water discharge hole is reduced through the movement of the regulating device; when the water quantity in the main pipe body is very little or even no water, the overflow area of the water drain hole can be zero. That is, the adjustability of the drainage hole flow area can not only allow water in the main pipe body to drain as soon as possible so as not to cause internal condensate backlog, but also prevent external air from entering the main pipe body from the residual drainage area and further entering the box body when the drainage hole area is too large, thereby improving the sealing performance of the drainage pipe.

Further, the adjusting device can move along the axial direction of the main pipe body under the action of the water pressure in the main pipe body and the elastic restoring force of the adjusting device, so that the overflow area of the water discharge hole in the main pipe body is adjusted, a driving device such as a motor is not required to be additionally arranged, the structure of the water discharge pipe is simplified, and the water discharge pipe is more suitable for small-space installation.

The above, as well as additional objectives, advantages, and features of the present utility model will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present utility model when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

fig. 1 is a schematic structural view of a drain pipe for a refrigerator according to an embodiment of the present utility model;

fig. 2 is a schematic structural exploded view of a drain pipe for a refrigerator according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a drain pipe according to one embodiment of the utility model;

FIG. 4 is a schematic enlarged view of portion A of FIG. 3;

FIG. 5 is another schematic structural exploded view of a drain pipe according to one embodiment of the present utility model;

FIG. 6 is a schematic enlarged view of portion B of FIG. 5;

fig. 7 is a schematic cross-sectional view of a refrigerator according to an embodiment of the present utility model.

Detailed Description

The present utility model first provides a drain pipe for a refrigerator, fig. 1 is a schematic structural view of a drain pipe for a refrigerator according to one embodiment of the present utility model, and fig. 2 is a schematic structural exploded view of a drain pipe for a refrigerator according to one embodiment of the present utility model. Referring to fig. 1 and 2, a drain pipe 10 for a refrigerator of the present utility model includes a main pipe body 11 and an adjusting device 12.

The main pipe body 11 has an inner end port 111 for communicating with a drain port of the refrigerator, and an outer end port 112 opposite to the inner end port 111, and the outer end port 112 is closed. Further, a drain hole 114 is formed in the peripheral wall of the preset section 113 of the main pipe body 11 located outside the refrigerator case.

The adjusting device 12 is configured to be movably disposed inside the main tube body 11 in the axial direction of the main tube body 11 according to the amount of water inside the main tube body 11 to adjust the flow-through area of the drain hole 114 for draining water such that the flow-through area of the drain hole 114 is positively correlated with the amount of water inside the main tube body 11.

In the present utility model, the flow-through area of the drain hole 114 is not the entire hole area of the drain hole 114, but the area of the drain hole 114 where drainage is possible.

The drain pipe 10 for a refrigerator of the present utility model includes a main pipe body 11 having an inner end port 111 and an outer end port 112, and an adjusting device 12 provided in the main pipe body 11. Unlike the prior art, the outer end port 112 of the main pipe body 11 is closed, and condensed water is not discharged from the outer end port 112 of the main pipe body 11. Further, the drain hole 114 of the drain pipe 10 is opened in the peripheral wall of the main pipe body preset section 113, and the adjusting device 12 is movable in the axial direction of the main pipe body 11 according to the amount of water in the main pipe body 11, so that the flow area of the drain hole 114 for draining water is adjusted such that the flow area of the drain hole 114 is positively correlated with the amount of water in the main pipe body 11. That is, when the amount of water in the main pipe body 11 is large, the overflow area of the drain hole 114 is increased by the movement of the adjusting device 12, so that the water in the main pipe body 11 is drained as soon as possible, and the normal draining function of the drain pipe 10 is achieved.

The drain pipe 10 of the present utility model does not need an external bellows, and water discharged from a water outlet of a refrigerator can directly enter an evaporation dish through the drain pipe 10. In addition, since the adjusting device 12 is disposed inside the main pipe body 11 and is preloaded inside the main pipe body 11 before the main pipe body 11 is mounted to the refrigerator cabinet, no additional external space is occupied, and no additional mounting process is required after the main pipe body 11 is mounted to the refrigerator cabinet, so that the drain pipe 10 of the present utility model is suitable for a small mounting space, and the convenience of the drain pipe 10 is improved.

When the amount of water in main pipe body 11 is small, the flow area of drain hole 114 is reduced by the movement of regulator 12; when there is little or no water in main tubular body 11, the area of drain hole 114 may be zero. That is, the adjustability of the overflow area of the drain hole 114 can not only allow the water in the main pipe body 11 to drain as quickly as possible so as not to cause the accumulation of condensed water in the main pipe body, but also prevent external air from entering the main pipe body 11 from the remaining drain area and further entering the tank body when the area of the drain hole 114 is too large, thereby improving the sealing performance of the drain pipe 10.

In some embodiments, the adjustment device 12 is configured to move in the axial direction of the main pipe body 11 under the action of the water pressure within the main pipe body 11 and the elastic restoring force of itself to adjust the overflow area of the drain hole 114.

Specifically, when the resultant force of the hydraulic pressure action in the main pipe body 11 and the elastic restoring force action of the regulator 12 is integrally directed toward the outer end port 12 of the main pipe body 11, the regulator 12 is moved toward the outer end port 11 of the main pipe body 11; when the resultant force of the hydraulic pressure action in the main pipe body 11 and the elastic restoring force action of the regulator 12 is integrally directed toward the inner end port 11 of the main pipe body 11, the regulator 12 is moved toward the inner end port 11 of the main pipe body 11. When the adjusting means 13 is displaced, the overflow area of the drain hole 114 for draining water is changed.

The adjusting device 12 can move along the axial direction of the main pipe body 11 under the action of the water pressure in the main pipe body 11 and the elastic restoring force of the adjusting device, so that the overflow area of the water discharge hole 114 on the main pipe body 11 is adjusted, a driving device such as a motor is not required to be additionally arranged, the structure of the water discharge pipe 10 is simplified, and the water discharge pipe is more suitable for small-space installation.

In some embodiments, the drain pipe 10 further includes an end cap 13, the end cap 13 being fixedly connected to the main pipe body 11 and adapted to block an outer end port 112 of the main pipe body 11. The adjusting device 12 includes a water deflector 121 and a spring 122 extending and contracting in the axial direction of the main tube body 11, and both ends of the spring 122 are fixedly connected to the water deflector 121 and the end cap 13, respectively.

When the main pipe body 11 has condensed water, the condensed water acts on the water baffle 121 to press the water baffle 121, and when the pressing force from the condensed water received by the water baffle 121 is greater than the elastic deformation of the spring 122, the spring 122 starts to contract and deform. When the condensed water in the main pipe body 11 gradually decreases, the pressing force from the condensed water received by the water deflector 121 gradually decreases, and when the pressing force from the condensed water received by the water deflector 121 is smaller than the elastic deformation action of the spring 122, the spring 122 starts to extend.

Since the end cap 13 is fixed, when the spring 122 is contracted and deformed, the water baffle 121 moves toward the outer end port 112 of the main tube body 11 by the pulling action of the spring 122; when the spring 122 is deformed by extension, the water deflector 121 is moved toward the inner end port 111 of the main tube body 11 by the urging of the spring 122.

Fig. 3 is a schematic cross-sectional view of a drain pipe according to an embodiment of the present utility model, and fig. 4 is a schematic enlarged view of a portion a in fig. 3. Further, the circumferential surface of the water deflector 121 is fluid-tight with the inner tube wall of the main tube body 11. That is, while the splash guard 121 is axially slidable within the main tube 11 under the influence of the springs 122, the mating interface of the splash guard 121 with the main tube 11 is fluid tight, and fluid within the main tube 11 on one side of the splash guard 121 does not pass to the other side of the splash guard 121 within the main tube 11.

When the main pipe body 11 has little or no water, the water baffle 121 moves to the first position toward the inner end port 111 under the pushing action of the spring, all the hole areas of the water drain holes 114 are located at one side of the water baffle 121 toward the outer end port 112, at this time, all the hole areas of the water drain holes 114 are isolated from the inner end port 111, and air in the external environment cannot enter the inner end port through the water drain holes 114 so as to perform the refrigerator inside the water drain pipe 10, thereby realizing a better non-return function.

When the amount of water in the main pipe body 11 gradually increases, the water baffle 121 moves in the direction of the outer end port 112 by the water pressure, and a partial hole area of the drain hole 114 is positioned on the side of the water baffle 121 facing the inner end port 111, and is communicated with the inner end port 111, so that the water in the main pipe body 11 can be drained (in this case, the partial hole area forms an overflow area of the drain hole); the other part of the hole area of the drain hole 114, through which outside air does not enter the inner end port 111, is located at the side of the water deflector 121 toward the outer end port 112, isolated from the inner end port 112.

When the amount of water in the main pipe body 11 is sufficiently large, the water baffle 121 moves toward the outer end port 112 by the water pressure, and all the hole areas of the drain holes 114 are located on the side of the water baffle 121 toward the inner end port 111, and all the hole areas belong to the overflow areas of the drain holes 114.

Specifically, the water deflector 121 may be made of a material having a certain deformability and a slightly high hardness, such as rubber, silica gel, or the like.

In some embodiments, the drain hole 114 is gradually widened from the inner end port 111 of the main pipe body 11 to the outer end port 112 of the main pipe body 11, so that the flow area of the drain hole 114 is increased when the water baffle 121 moves towards the outer end port 112 by a unit distance, and a large amount of condensed water in the main pipe body 11 can be discharged more timely and smoothly.

Specifically, the drain hole 114 may have a triangular shape with a tip end directed toward the inner end port 111 of the main tube body 11.

In some alternative embodiments, the drain holes 114 may be other regular or irregular shapes as desired.

In some embodiments, the number of the drain holes 114 is plural, and the plurality of drain holes 114 are uniformly and intermittently arranged along the circumferential direction of the preset section 113 so as to more precisely adjust the total overflow area of the plurality of drain holes 114 according to the amount of water in the main pipe body 11.

In some embodiments, the first ends of the plurality of drainage apertures 114 adjacent the direction of the inner end port 111 are each on a first circumference concentric with the main tube body 11. The second ends of the plurality of drain holes 114 in the direction adjacent to the outer end port 112 are each on a second circumference concentric with the main tube body 11. That is, in the moving direction of the water blocking plate 121, the first ends of the plurality of water discharge holes 114 adjacent to the inner end port 111 are flush, and the second ends of the plurality of water discharge holes 114 adjacent to the outer end port 112 are also flush, so that the total flow area of the plurality of water discharge holes 114 can be adjusted more precisely according to the amount of water in the main pipe body 11.

Fig. 5 is another schematic structural exploded view of a drain pipe according to an embodiment of the present utility model, and fig. 6 is a schematic enlarged view of a portion B in fig. 5. In some embodiments, a clamping structure 115 is provided on the peripheral wall of the main tube body 11 adjacent to the outer end port 112. The peripheral wall of the end cover 13 is provided with a clamping column 131, and the clamping column 131 is clamped in the clamping structure 115, so that the end cover 13 is fixedly connected to the main pipe body 11. That is, the main pipe body 11 and the end cap 13 are separated, and they can be assembled together by means of a snap-fit, the assembly process is very simple.

Further, the snap-fit structure 115 is an L-shaped snap-fit groove extending through the peripheral wall of the main tube body 11 in the radial direction of the main tube body 11, the L-shaped snap-fit groove including a first section 1151 extending axially inward from the outer end port 112 of the main tube body 11, and a second section 1152 extending from the extending end of the first section 1151 toward the peripheral direction of the main tube body 11. The clamping post 131 is configured to operably clamp into a first section 1151 of the L-shaped clamping groove and then rotate into a second section 1152 of the L-shaped clamping groove along the axial direction of the main tubular body 11. Therefore, the second section 1151 and the clamping post 131 can be matched to limit the relative movement of the end cover 13 and the main pipe body 11 in the axial direction, namely, the freedom degree of the end cover 13 in the axial direction is limited, the end cover 13 is prevented from falling off from the main pipe body 11, and the stability and reliability of the assembly of the end cover 13 are improved.

Further, a downwardly recessed limiting recess 1153 is provided in the wall of the second segment 1152 adjacent the outer end port 112. The bottom of joint post 131 is equipped with downward convex back-off 132, after joint post 131 card income joint structure 115, back-off 132 restriction is in spacing pit 1153 to restrict the relative movement of end cover 13 and main body 11 in the circumference of main body 11, limit the ascending degree of freedom of end cover 13 promptly, avoid end cover 13 to rotate for main body 11, further improved the steadiness and the reliability of end cover 13 assembly.

Specifically, the peripheral wall of the end cap 13 may be inserted inside the main tube body 11, and the peripheral wall of the end cap 13 may be clearance fit or fit with the inner tube wall of the main tube body 11.

The present utility model also provides a refrigerator, and fig. 7 is a schematic cross-sectional view of a refrigerator according to an embodiment of the present utility model. The refrigerator 1 of the present utility model includes a case 20, and the case 20 has a drain port 21 for draining condensed water generated inside thereof.

Specifically, the case 20 may include an inner container 22, a case 23, and a foamed insulation formed between the inner container and the case. The inner container 22 is formed therein with a storage compartment for storing articles and a cooling compartment 221 for providing cooling capacity. An evaporator 24 is generally disposed in the cooling chamber 221, and condensed water or defrost water is generated during defrosting of the evaporator 24. Accordingly, the drain port 21 is preferably opened at the bottom of the inner container 21 and communicates with the cooling chamber 221 so as to drain condensed water or defrost water generated during defrosting of the evaporator 24 through the drain port 21.

Further, the refrigerator 1 further includes the drain pipe 10 described in any of the above embodiments, the inner end port 111 of the drain pipe 10 communicates with the drain port 21, and the outer end port 112 of the drain pipe 10 extends into the compressor compartment or outside the cabinet.

According to the utility model, the structure of the drain pipe 10 is specially designed, and on the basis of realizing the drainage function, no external corrugated pipe is needed, so that water discharged from the water outlet of the refrigerator can directly enter the evaporation dish of the refrigerator through the drain pipe 10. In addition, since the adjusting device 12 is disposed inside the main pipe body 11 and is preloaded inside the main pipe body 11 before the main pipe body 11 is mounted to the refrigerator cabinet, no additional external space is occupied, and no additional mounting process is required after the main pipe body 11 is mounted to the refrigerator cabinet, so that the drain pipe 10 of the present utility model is suitable for a small mounting space, and the convenience of the drain pipe 10 is improved.

Meanwhile, the adjustability of the overflow area of the drainage hole 114 can not only allow water in the main pipe body 11 to be drained as soon as possible so as not to cause accumulation of condensed water in the main pipe body, but also prevent external air from entering the main pipe body 11 from the residual drainage area and further entering the box body when the area of the drainage hole 114 is too large to drain water, so that the sealing performance of the drainage pipe 10 is improved.

It should be understood by those skilled in the art that the above-described embodiments are only a part of embodiments of the present utility model, and not all embodiments of the present utility model, and the part of embodiments is intended to explain the technical principles of the present utility model and not to limit the scope of the present utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive effort, based on the embodiments provided by the present utility model, shall still fall within the scope of protection of the present utility model.

Further, it should also be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

It should be further understood by those skilled in the art that terms such as "upper", "lower", "front", "rear", "top", "bottom", etc. used to indicate the azimuth or positional relationship in the embodiments of the present utility model are based on the actual use state of the refrigerator 1, and these terms are merely for convenience of description and understanding of the technical solution of the present utility model, and do not indicate or imply that the apparatus referred to or must not necessarily have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been shown and described herein in detail, many other variations or modifications of the utility model consistent with the principles of the utility model may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the utility model. Accordingly, the scope of the present utility model should be understood and deemed to cover all such other variations or modifications.

Claims (11)

1. A drain pipe for a refrigerator, comprising:

the main pipe body is provided with an inner end port communicated with the water outlet of the refrigerator and an outer end port opposite to the inner end port, the outer end port is arranged in a closed mode, and a water outlet is formed in the peripheral wall of a preset section, located outside the refrigerator, of the main pipe body; and

and the adjusting device is configured to be movably arranged inside the main pipe body along the axial direction of the main pipe body according to the water quantity in the main pipe body so as to adjust the overflow area of the drain hole for draining water, so that the overflow area of the drain hole is positively related to the water quantity in the main pipe body.

2. The drain pipe of claim 1, wherein the drain pipe is formed of a material selected from the group consisting of,

the adjusting device is configured to move in the axial direction of the main pipe body under the action of water pressure in the main pipe body and the elastic restoring force of the adjusting device so as to adjust the flow passage area of the water discharge hole.

3. The drain pipe of claim 2, further comprising:

the end cover is fixedly connected to the main pipe body and is used for blocking an outer end port of the main pipe body; and is also provided with

The adjusting device comprises a water baffle and a spring which stretches along the axial direction of the main pipe body, wherein two ends of the spring are respectively fixedly connected with the water baffle and the end cover, and the circumferential surface of the water baffle is in fluid seal with the inner pipe wall of the main pipe body.

4. A drain pipe as claimed in claim 3, wherein,

the drain hole diverges from the inner end port of the main pipe body to the outer end port of the main pipe body.

5. The drain pipe of claim 4, wherein the drain pipe is formed of a material having a shape of a hollow,

the drain hole is triangular with a tip end facing the direction of the inner end port of the main pipe body.

6. A drain pipe as claimed in claim 3, wherein,

the number of the drain holes is multiple, and the drain holes are uniformly distributed along the circumferential direction of the preset section at intervals.

7. The drain pipe of claim 6, wherein the drain pipe is formed of a material having a shape of a hollow,

first ends of the plurality of drain holes adjacent to the inner end port direction are all on a first circumference concentric with the main pipe body; and is also provided with

Second ends of the plurality of drain holes adjacent to the outer end port direction are each on a second circumference concentric with the main tube body.

8. A drain pipe as claimed in claim 3, wherein,

a clamping structure is arranged on the peripheral wall of the main pipe body adjacent to the outer end port; and is also provided with

The periphery wall of the end cover is provided with a clamping column which is clamped in the clamping structure, so that the end cover is fixedly connected to the main pipe body.

9. The drain pipe of claim 8, wherein the drain pipe is formed of,

the clamping structure is an L-shaped clamping groove penetrating through the peripheral wall of the main pipe body along the radial direction of the main pipe body, and the L-shaped clamping groove comprises a first section extending inwards from the outer end port of the main pipe body axially and a second section extending from the extending tail end of the first section towards the circumferential direction of the main pipe body; and is also provided with

The clamping post is configured to operably clamp into a first section of the L-shaped clamping groove along an axial direction of the main pipe body and then to rotatably clamp into a second section of the L-shaped clamping groove.

10. The drain pipe of claim 9, wherein the drain pipe is formed of a material selected from the group consisting of,

a limiting pit recessed downwards is formed in the groove wall, adjacent to the outer end port, of the second section; and is also provided with

The bottom of joint post is equipped with downward convex back-off, after the joint post card is gone into the joint structure, the back-off restriction is in the spacing pit to in the circumference of the main body the restriction end cover with the relative movement of the main body.

11. A refrigerator, comprising:

a tank having a drain port for draining condensed water generated inside; and

the drain pipe of any one of claims 1-10, an inner end port of the drain pipe in communication with the drain opening.