JPH10281625A - Draining unit for refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the draining unit of a refrigerator to be installed on a floor with the whole bottom surface in contact with the floor without any problem in draining defrosted water by arranging a drain hole to the recessed part of a block fixed to the lower part of the outer wall of a side wall. SOLUTION: A drain pipe 27 that is dropped downward and bent inside a back wall 8 along the back wall 8 and a side wall 7A of a refrigerator main body 2, extended slanting left downward, extended forward slanting downward being bent at the meeting part between the back wall 8 and the left side wall 7A is built into the refrigerator, and the low end part of the drain pipe 27 is inserted to the piping hole of a block 21 arranged to the inside of the left side wall 7A and connected to the one end of a drain hose 24 inside the recessed part of the block 21. Therefore, the defrosted water generated by the cooler is guided downward inside the left side wall 7A through the drain pipe 27 and drained from the drain hose 24 to the outside of the refrigerator main body 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device for a refrigerator or the like, and more particularly to a method for draining defrost water generated from a cooler without fail even when the entire bottom surface of the refrigerator body is closely attached to a floor of a room. The present invention relates to a drainage device for a refrigerator.

[0002]

2. Description of the Related Art Conventionally, in a refrigerator or the like, a pipe for draining defrost water generated from a cooler is installed after the refrigerator is installed. Therefore, when piping is carried out along the inner wall of the warehouse, the width of the shelf in the warehouse becomes narrow, and the space in which goods can be arranged is reduced. Further, when piping is provided along the back of the refrigerator, it is necessary to install the refrigerator away from the wall of the room, and there is a problem that the installation space becomes large. Furthermore, when piping work is performed after installing the refrigerator, there is a problem that piping mistakes and the like also occur. In order to solve these problems, there has been proposed a drainage device in which a water distribution pipe is embedded in a heat insulating material of a wall of a refrigerator body. For example, as shown in Japanese Utility Model Laid-Open Publication No. 3-31275, a drain pipe is buried in the heat insulating material of the rear wall and in the heat insulating material of the side wall, and the drain port of this drain pipe is located at the lower end face of the side wall near the heat insulating door. Provided, a drain hose or the like is attached to the drain port,
There is a structure in which defrost water generated by a defrosting operation of a cooler is guided to a drain pipe in a rear wall and drained to a drain hose or the like via the drain pipe. Further, as shown in JP-A-7-198244, a drain pipe is buried in a heat insulating material of a vertical partition formed at the center of the front opening of the refrigerator body,
A drain hole communicating with a recess formed in the bottom of the refrigerator body is provided on a bottom surface in the refrigerator body, and the recess is covered with a drain receiving portion having a drain outlet pipe fixed to the bottom surface. The defrost water generated by the defrosting operation of the cooler is guided to a drain pipe in the vertical partition, and is drained to the floor inside the refrigerator main body through the drain pipe. There is known a structure in which water is drained into a concave portion at the bottom and then drained from a drain outlet pipe to a drain on the floor via a drain receiver.

[0003]

However, when the load strength per unit area of the floor on which the refrigerator is installed is small, it is necessary to install the refrigerator body in close contact with the floor to reduce the load per unit area. There is,
The refrigerator described in Japanese Patent No. 31276 has a problem that it is difficult to install the refrigerator body in close contact with the floor because it is necessary to attach a drain hose or the like to the lower surface of the refrigerator body. Also, when a drain hose or the like is fitted to the drain port on the lower surface of the refrigerator main body, there is a problem that the interval between the lower surface of the refrigerator main body and the floor is narrow, and it is difficult to attach the drain hose and the like. Further, the refrigerator described in Japanese Patent Application Laid-Open No. 7-198244 is required to be provided with a drainage receiving portion or the like at the bottom of the refrigerator main body, so that the refrigerator main body needs to be installed on a pedestal slightly higher than the floor surface. There is a problem that it is difficult to install the main body so that the entire bottom surface is in close contact with the floor. In addition, since the drainage receiving section is installed on the bottom of the refrigerator main body, it is difficult to check dust and the like accumulated in the drainage receiving section,
There is a problem that the drain pipe is clogged with garbage. Also, when the drainage receiving section is removed, there is a problem that the clearance between the bottom surface of the refrigerator main body and the floor is narrow, and it is difficult to remove the drainage receiving section. Further, in the drainage device of each of the refrigerators described above, when it is necessary to install a drainage tray on the lower surface of the refrigerator body, it is difficult to check the amount of drainage accumulated in the drainage tray, and there is a problem that overflow of drainage occurs. .

Therefore, the present invention has been made to solve the above-mentioned problems, and a defrosting water drain port is provided in a concave portion of a block material fixed below an outer wall plate of a side wall. An object of the present invention is to provide a drainage device for a refrigerator that can be installed in such a manner that the entire bottom surface of the refrigerator body is brought into close contact with the floor without causing any trouble in draining defrost water.
In addition, the provision of a drain port for defrosted water in the recess at the lower part of the outer wall plate of the side wall facilitates installation of a drain hose, etc., and facilitates installation work of the drain hose, maintenance work, and the like. The purpose of the present invention is to provide a drainage device. Further, by installing a drainage container in a recess at the lower part of the outer wall plate of the side wall, it is easy to check the amount of wastewater and garbage accumulated in the drainage container, and to provide a drainage device for a refrigerator that can easily perform maintenance and inspection. The purpose is to do.

[0005]

According to a first aspect of the present invention, there is provided a drainage device for a refrigerator, comprising: a cooler; a hole formed in a lower portion of an outer wall plate of a side wall; A recess is formed so as to be interposed between the inner wall plate of the side wall and a predetermined depth from the hole peripheral portion,
A block material in which a pipe hole communicating with the inner surface of the concave portion is formed, and the defrost water generated by the cooler is guided downward by being inserted into the pipe hole of the block material and extending into the concave portion. And a drain pipe for draining water.

In the drainage device for a refrigerator according to the first aspect having the above-mentioned features, the drainage outlets of the drainage pipes embedded in the rear wall and the side wall are formed in the recesses of the block material fixed below the outer wall plate of the side wall. It becomes the structure extended to. Thus, a drainage structure is formed in which the defrost water generated from the cooler is guided to the drainage pipe buried in the rear wall and the side wall and drained from the drainage pipe. Therefore, connection of a drain hose or the like to the drain port of the drain pipe after the installation of the refrigerator is facilitated, the connection mistake of the drain hose or the like is eliminated, and the quality can be improved. Water can be drained, and the entire bottom surface of the refrigerator body can be placed in close contact with the floor. Further, the block material keeps the space between the outer wall plate and the inner wall plate of the side wall and has a substantially U-shaped cross section, so that the block material has a large area in contact with the outer wall plate and the inner wall plate, and is firmly fixed in the side wall. It is possible to strongly support the drainage pipe.

According to a second aspect of the present invention, there is provided a drainage device for a refrigerator according to the first aspect, wherein a heat insulating material is placed in the recess.

[0008] In the drainage device for a refrigerator according to the second aspect having the above-described features, the depressed portion can be prevented from being condensed by filling the depressed portion with a heat insulating material and covering the depressed portion with a lid member. Become.

[0009] The drainage device for a refrigerator according to claim 3 includes a cooler, a hole formed in a lower portion of an outer wall plate of a side wall,
A block member which is provided so as to be interposed between the hole peripheral portion and the inner wall plate of the side wall and has a recess formed over a predetermined depth from the hole peripheral portion, and a pipe hole formed in communication with the recess inner surface; A drain pipe which is inserted into a pipe hole of the block material, extends into the recess, and guides defrost water generated in the cooler downward; and a drain disposed below the drain pipe. And a container.

In the drainage device for a refrigerator according to the third aspect having the above-mentioned features, the drainage ports of the drainpipe buried in the rear wall and the side wall are formed in the recesses of the block material fixed to the lower part of the outer wall plate of the side wall. And a drain container is disposed below the drain port in the recess. As a result, a drain structure is formed in which the defrost water generated from the cooler is guided to the drain pipe buried in the rear wall and the side wall, and is drained from the drain pipe to the drain container. Therefore, the defrost water can be drained to the drainage container disposed in the recess on the side surface of the refrigerator main body, and the entire bottom surface of the refrigerator main body can be placed in close contact with the floor.
Further, by disposing the drainage container in the concave portion on the side surface of the refrigerator body, it is possible to easily confirm the amount of wastewater, dust and the like accumulated in the drainage container, and to prevent overflow of drainage. Further, the block material keeps the space between the outer wall plate and the inner wall plate of the side wall and has a substantially U-shaped cross section, so that the block material has a large area in contact with the outer wall plate and the inner wall plate, and is firmly fixed in the side wall. It is possible to strongly support the drainage pipe.

According to a fourth aspect of the present invention, there is provided a refrigerator drainage device according to any one of the first to third aspects, further comprising a lid member that covers the hole and is openably and closably attached. It is characterized by.

In the drainage device for a refrigerator according to the fourth aspect having such a feature, the intrusion of a mouse or the like can be prevented by covering the lid member in the recess at the lower portion of the outer wall plate of the side wall. .

According to a fifth aspect of the present invention, in the drainage device for a refrigerator according to any one of the first to fourth aspects, the hole is formed at a position near the heat insulating door on the side wall. It is characterized by.

In the refrigerator drain device according to the fifth aspect having the above-mentioned features, the refrigerator can be easily accessed from the front side of the refrigerator into the recess at the lower portion of the outer wall plate of the side wall, and the drain hose can be attached and installed after the refrigerator is installed. It is possible to easily carry out piping work and maintenance work such as attaching and detaching members, arranging a drainage container, and confirming the amount of wastewater and dust in the drainage container.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, first and second embodiments of a drainage device for a refrigerator according to the present invention will be described in detail with reference to the drawings. First, an overall configuration of a refrigerator in which the refrigerator drainage device according to the first embodiment is used will be described with reference to FIG. FIG. 1 is a perspective view showing a state where a heat insulating door of the refrigerator according to the first embodiment is opened. In FIG. 1, the refrigerator 1 is basically composed of a refrigerator main body 2 and four heat insulating doors 3 (two left heat insulating doors 3 are not shown) which are openably and closably attached to a front opening of the refrigerator main body 2. Further, a machine room 4 is formed on the upper surface of the refrigerator main body 2. The refrigerator main body 2 is an insulated box body having an integral structure composed of an outer box, an inner box, and a foam material filled therebetween, and has a ceiling wall 5, a bottom wall 6, a left side wall 7A, a right side wall 7B, and , A rear wall 8 is formed. A vertical partition 15 and a horizontal partition 16 perpendicular to the vertical partition 15 are arranged in the center of the front opening. A magnetically attractable packing member 10 made of an elastically deformable material such as rubber is attached to the outer peripheral edge of the inner surface of the heat insulating door 3. The packing member 10 is attached to the vertical partition 15.
And it comes into contact with the horizontal partition 16 while being slightly pressed.
Thereby, the cool air in the refrigerator 1 is prevented from leaking out of the refrigerator via the packing member 10, and the refrigerator 1 is kept airtight. In addition, the left side wall 7A of the refrigerator main body 2,
On the inner surface of the right side wall 7B and the inner surface of the rear wall 8, a shelf support 14 for attaching a shelf support (not shown) for holding the shelf 13 is fixed. Shelf 13 is attached.

A machine room 4 formed on the upper surface of the refrigerator body 2 is covered with a panel 4A, and a condenser 11 and a compressor 12 for cooling the inside of the refrigerator body 2 are provided.
Etc. are stored. In addition, a condenser (not shown) constituting a refrigerating cycle and cool air of the cooler are sent to the inside of the refrigerator body 2 inside the ceiling wall 5 together with the condenser 11 and the compressor 12 on the ceiling wall 5. A cooling fan (not shown) is provided, and cools foods and the like placed on the shelf 13. A cooling duct 17 is provided below the cooler to receive defrost water generated when removing frost adhering to the cooler, and a drain (not shown) of the cooling duct 17 drains water. One end of a tube (not shown) is fitted, and the other end is formed in a drain hole drilled below the drain port of the cooling duct 17 substantially on the center line in the width direction of the inner surface of the rear wall 8. It is inserted (not shown). This drain hole is provided in the thickness direction of the rear wall 8 (FIG. 1).
The upper end of the drain pipe 27 buried substantially on the center line (in the middle, front and rear directions) is fitted.

A drain pipe 27 connected to the drain hole 27
Is bent downward and bent in the rear wall 8 and extends obliquely downward and leftward in FIG. 1.
It has a shape that extends obliquely downward in the left side wall 7A toward the front direction (the front side in FIG. 1) while being bent at the junction with A. The drain pipe 27 may be formed integrally, or a plurality of drain pipe members may be interconnected. The drain pipe 27 configured as described above is attached to the left side wall 7.
A is buried substantially on the center line in the thickness direction (the front-rear direction in FIG. 1), and the drain port 23 of the drain pipe 27
Is fitted into a pipe hole 30 of a block material 21 formed of a foam material provided in the left side wall 7A (see FIG. 2).

Here, the drainage structure of the left side wall 7A will be described with reference to FIG. FIG. 2 is an enlarged cross-sectional view of a part of the cross section of the left side wall 7A including the block member 21. FIG.
The left side wall 7A includes an outer wall plate 71 formed by an outer box, an inner wall plate 72 formed by an inner box, a foam material 51 filled between the outer wall plate 71 and the inner wall plate 72, and an outer wall plate 71.
And a block member 21 made of a foam material into which the drain port 23 of the drain tube 27 is inserted. 1 and 2, a side hole 28 is formed at a lower position of the outer wall plate 71, and the block member 21 is installed so as to be interposed between the peripheral edge of the side hole 28 and the inner wall plate 71. Further, a side hole 28 is provided on the surface of the block material 21 that contacts the outer wall plate 71.
A concave portion 29 is formed in a predetermined depth from the peripheral portion (shorter than the thickness of the left side wall 7A) and is substantially equal to the side hole 28. Further, the upper end surface of the block material 21 (in FIG. 2,
A pipe hole 30 is formed substantially vertically from the upper end face) and communicates with the inner surface of the recess 29, and the inner diameter of the pipe hole 30 is formed substantially equal to the outer diameter of the drain pipe 27. The drain port 23 is inserted. Each of the outer box and the inner box is formed of a thin steel plate.

Further, as shown in FIG. 1, the drain port 23 extending into the recess 29 below the outer wall plate 71 of the left side wall 7A.
One end of a drain hose 24 is fitted to an end of the drain hose. Further, the heat insulating material 22 is filled in the concave portion 29, the drain hose 24 is inserted into the notch 31 of the lid member 25, and the lid member 25 is screwed with a screw 26 so as to cover the side hole 28. ing.

In the above configuration, the frost generated in the cooler becomes defrosted water by the defrosting operation and is collected at the drain of the cooling duct 17. Then, the defrost water in the cooling duct 17 flows into the drain pipe 27 via the drain tube connecting the drain port of the cooling duct 17 and the drain hole of the rear wall 8. Next, the defrost water flowing into the drain pipe 27 is downward (in FIG. 1,
(Lower left side), flows into the drain hose 24 fitted to the drain port 23, and is drained.

As described above in detail, in the drainage device for the refrigerator 1 according to the first embodiment, the water is generated from the cooler via the drainage pipe 27 buried connected to the rear wall 8 and the left side wall 7A of the refrigerator body 2. Defrost water is discharged from drain port 23 to drain hose 2
4 drains water from the side of the refrigerator 1 to the outside. Therefore, the work of connecting the drain hose 24 to the drain port 23 of the drain pipe 27 can be performed from the side hole 28 formed in the outer wall plate 71 of the left side wall 7A, and the drainage to the drain port 23 after the installation of the refrigerator 1 is performed. Connection of hose 24 etc. becomes easy,
It is possible to improve the quality by eliminating connection mistakes of the drain hose 24 and the like, and to drain the defrost water from the side surface of the refrigerator body 2, and to install the whole bottom surface of the refrigerator body 2 in close contact with the floor. Becomes possible. In addition, the block material 21
Maintains the space between the outer wall plate 71 and the inner wall plate 72 of the left side wall 7A and has a substantially U-shaped cross section, so that the area in contact with the outer wall plate 71 and the inner wall plate 72 is large, and 7A, the drain pipe 27 can be firmly supported. Further, by covering the lid member 25 in the side hole 28 below the outer wall plate 71 on the left side wall, it becomes possible to prevent intrusion of a mouse or the like. Further, by filling the heat insulating material 22 in the concave portion 29 and covering the side hole 28 with the lid member 25, it is possible to prevent dew condensation in the concave portion 29. Further, the inside of the concave portion 29 below the outer wall plate 71 of the left side wall 7A is easily accessible from the front side of the refrigerator, so that piping work such as installation of the drainage hose 24, attachment and detachment of the lid member 25, and maintenance and inspection work can be easily performed. Will be possible.

Next, a drainage device for a refrigerator according to a second embodiment will be described in detail. The schematic configuration of the drain pipe of the refrigerator according to the second embodiment is substantially the same as the configuration of the drain pipe of the refrigerator of the first embodiment (see FIG. 1).

Next, a drainage structure according to a second embodiment will be described with reference to FIG. FIG. 3 is an enlarged cross-sectional view of a part of the cross section of the left side wall 7A including the block member 21 according to the second embodiment. As shown in FIG.
A drainage container 32 is installed below the drainage port 23 of the drainage pipe 27 extending into the inside 9, and has a structure for storing defrost water from the drainage port 23. In addition, a cover member 33 formed of a synthetic resin plate such as a transparent acrylic plate is fixed to the outer wall plate 71 of the left side wall 7A so as to open and close the side hole 28 via a hinge 34.

Next, the flow of the defrost water will be described with reference to FIGS.
It will be described based on. First, the defrost water of the cooler is collected at the drain of the cooling duct 17. Then, the defrost water in the cooling duct 17 flows into the drain pipe 27 via the drain tube connecting the drain port of the cooling duct 17 and the drain hole of the rear wall 8. Next, the defrost water flowing into the drain pipe 27 flows downward (the lower left side in FIG. 1), and flows from the drain port 23 into the drain container 32 arranged below. The amount of defrost water accumulated in the drain container 32 is appropriately checked by an operator via the cover member 33, and when a certain amount or more of the defrost water accumulates in the drain container 32, the defrost water in the drain container 32 is removed. Is discarded by workers.

As described above in detail, in the drainage device of the refrigerator 1 according to the second embodiment, the cooling device is connected to the rear wall 8 and the left side wall 7A of the refrigerator main body 2 through the drainage pipe 27 embedded therein. The generated defrost water is discharged from the drain port 23 to the drain container 3.
It is drained to 2. Therefore, the defrost water can be drained to the drainage container 32 arranged in the concave portion 29 on the side surface of the refrigerator main body 2, and the entire bottom surface of the refrigerator main body 2 can be placed in close contact with the floor. In addition, the block material 21 maintains a space between the outer wall plate 71 and the inner wall plate 72 of the left side wall 7A, and has a substantially U-shaped cross section, so that the area in contact with the outer wall plate 71 and the inner wall plate 72 is large. , Is firmly installed in the left side wall 7A, and firmly supports the drainage pipe 27, and can reliably support the drainage container 32. Also,
By arranging the drainage container 32 in the concave portion 29 on the side surface of the refrigerator body 2, it is possible to easily check the amount of drainage accumulated in the drainage container 32, check dust, and the like via the transparent lid member 33, and to overflow drainage. Can be prevented. Also,
By covering the cover member 33 in the concave portion 29 below the outer wall plate 71 of the left side wall 7A, it is possible to prevent intrusion of a mouse or the like. Further, the refrigerator 1 can be easily reached from the front side of the refrigerator 1 into the concave portion 29 below the outer wall plate 71 of the left side wall 7A, and maintenance work such as arranging the drainage container 32 and checking the amount of drainage in the drainage container 32 can be easily performed. It is possible to do.

It should be noted that the present invention is not limited to the first and second embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It may be as follows. (A) A drain tube or the like may be attached to the drain container 32 so that the drained defrost water flows directly into the drain. Further, a notch or the like for fitting the drainage tube may be formed in the lid member 33. (B) The drain pipe 27 is embedded in the left side wall 7A, but may be embedded in the right side wall 7B. In this case, the drain pipe 27 has a shape that extends obliquely downward in the forward direction (the front side in FIG. 1) in the right side wall 7B while being bent at the junction of the rear wall 8 and the right side wall 7B. (C) Although the drain pipe 27 is buried substantially on the center line in the thickness direction of the rear wall 8 and the left side wall 7A, it may be buried in contact with the outer box or the inner box. (D) Although the cover member 33 is made of a transparent synthetic resin plate, it may be made of a thin steel plate having many small holes. (E) Although the refrigerator room was made into one room, a plurality of rooms were connected side by side (in the left-right direction in FIG. 1), and a drain pipe was buried in the rear wall of each room, and the drain pipe was joined at the rear wall junction of each room. May be connected to each other.

[0027]

As described above, according to the drainage device for a refrigerator according to the first aspect, the drainage port of the drainage pipe buried in the rear wall and the side wall is formed of the block material fixed to the lower portion of the outer wall plate of the side wall. The structure extends into the recess. Thus, a drainage structure is formed in which the defrost water generated from the cooler is guided to the drainage pipe buried in the rear wall and the side wall and drained from the drainage pipe. Therefore, connection of a drain hose or the like to the drain port of the drain pipe after the installation of the refrigerator is facilitated, the connection mistake of the drain hose or the like is eliminated, and the quality can be improved. It is possible to provide a refrigerator drainage device that can drain water and can be installed so that the entire bottom surface of the refrigerator body is in close contact with the floor. Furthermore, while the block material keeps the space between the outer wall plate and the inner wall plate of the side wall,
Since the cross section is formed in a substantially U-shape, the area in contact with the outer wall plate and the inner wall plate is large, and is firmly fixed in the side wall,
A drainage device for a refrigerator capable of firmly supporting a drainage pipe can be provided.

According to the refrigerator drain device of the present invention, the concave portion is filled with a heat insulating material, and the concave portion is covered by the cover member, thereby preventing the dew condensation in the concave portion. An apparatus can be provided.

According to the third aspect of the present invention, the drain port of the drain pipe buried in the rear wall and the side wall extends into the recess of the block material fixed below the outer wall plate of the side wall. Then, a drainage container is arranged below the drainage port in the recess. As a result, a drain structure is formed in which the defrost water generated from the cooler is guided to the drain pipe buried in the rear wall and the side wall, and is drained from the drain pipe to the drain container. Therefore, it is possible to provide a drainage device for a refrigerator that can drain defrost water into a drainage container disposed in a recess on the side surface of the refrigerator main body, and that can be installed with the entire bottom surface of the refrigerator main body in close contact with the floor. Can be. In addition, by disposing the drainage container in the recess on the side surface of the refrigerator body, it is possible to easily check the amount of wastewater and garbage accumulated in the drainage container, and to provide a refrigerator drainage device capable of preventing overflow of drainage. Can be provided. Further, the block material keeps the space between the outer wall plate and the inner wall plate of the side wall and has a substantially U-shaped cross section, so that the block material has a large area in contact with the outer wall plate and the inner wall plate, and is firmly fixed in the side wall. It is possible to provide a drainage device for a refrigerator which is provided and can firmly support the drainage pipe.

Further, according to the refrigerator drain device of the present invention, the cover member is covered in the recess at the lower portion of the outer wall plate of the side wall, so that the intrusion of a mouse or the like can be prevented. An apparatus can be provided.

Further, according to the refrigerator drain device of the fifth aspect, the refrigerator can be easily reached from the front side of the refrigerator into the recess at the lower portion of the outer wall plate of the side wall. In addition, it is possible to provide a drainage device for a refrigerator that can easily perform a piping operation such as an operation of arranging a drainage container and a check of a drainage amount in the drainage container and a maintenance inspection operation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a heat insulating door of a refrigerator according to a first embodiment is opened.

FIG. 2 is an enlarged cross-sectional view of a part of a cross section of a left side wall including a block member according to the first embodiment.

FIG. 3 is an enlarged cross-sectional view of a part of a cross section of a left side wall including a block member according to a second embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... refrigerator, 2 ... refrigerator main body, 3 ... heat insulation door, 4 ... machine room, 5 ... ceiling wall, 6 ... bottom wall,
7A: left wall, 7B: right wall, 8: rear wall,
17 ・ ・ ・ Cooling duct, 21 ・ ・ ・ Block material, 22 ・
..Insulation material, 23: drain port, 24: drain hose, 25, 33: lid member, 27: drain pipe, 28
... Side hole, 32 ... Drainage container

Claims (5)

[Claims] 1. A cooler, a hole formed in a lower portion of an outer wall plate of a side wall, and a predetermined depth from the hole peripheral portion, the hole being provided between the hole peripheral portion and the inner wall plate of the side wall. A block material having a recess formed therein and having a pipe hole communicating with the inner surface of the recess, and a block member inserted into the pipe hole of the block material and extended into the recess, and generated by the cooler. A drainage device for a refrigerator, comprising: a drainage pipe for guiding frost water downward and draining it. 2. The drainage device for a refrigerator according to claim 1, wherein a heat insulating material is placed in the recess. 3. A cooler, a hole formed at a lower portion of an outer wall plate of a side wall, and a predetermined depth from the hole peripheral portion, wherein the hole is provided so as to be interposed between a peripheral portion of the hole and an inner wall plate of the side wall. A block material having a recess formed therein and having a pipe hole communicating with the inner surface of the recess, and a block member inserted into the pipe hole of the block material and extended into the recess, and generated by the cooler. A drainage device for a refrigerator, comprising: a drainage pipe for guiding frost water downward; and a drainage container disposed below the drainage pipe. 4. The drainage device for a refrigerator according to claim 1, further comprising a cover member that covers the hole and is attached so as to be openable and closable. 5. The drainage device for a refrigerator according to claim 1, wherein the hole is formed at a position near the heat insulating door on the side wall.