JPH11237164A - Freezing refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts for forming a drain path itself, that of parts for preventing frost from attaching to and freezing of the drain path, reduce further the number of connections of the draining path as the result thereof, and simplify a highly accurate installation work for prevention of water leakage in a structure of a drain path of defrosted water of a refrigerating room evaporator in a refrigerator provided with a refrigerating room in the upper part of a freezing room. SOLUTION: A drain hole 20 for defrosted water is provided in an inner compartment 4 of a section located at the lower part of a refrigerating room evaporator 17, a drain hose 12 is directly connected to the drain hole 20, a heater 21 for preventing freezing in a region of a freezing room 2, is extended to the upper end of the drain hose 12, that is, the vicinity of the drain hole 20, so as to prevent frost from attaching to and freezing of the drain path. As a result, the drain path for removing defrosted water is provided wherein the number of parts are reduced, and installation work is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for discharging defrosted water from a refrigerator evaporator in a refrigerator-freezer to the outside of a refrigerator.

[0002]

2. Description of the Related Art The structure of a drainage path for defrost water in a conventional refrigerator-freezer is disclosed in Japanese Utility Model Laid-Open Publication No. 62-31279.

[0003] Hereinafter, the structure of the conventional defrost water drainage path will be described with reference to the drawings.

FIG. 4 is a schematic longitudinal sectional view of a conventional refrigerator-freezer.
FIG. 5 is a sectional view of a main part of a drainage path of the defrost water. 4 and 5, reference numeral 1 denotes an outer box of the refrigerator, 2 denotes a freezer provided at an upper portion of the refrigerator, 3 denotes a refrigerator provided at a lower portion of the refrigerator 2, 4 denotes an inner box of the refrigerator, and 5 denotes a refrigerator. Is a heat insulating material filled between the outer box 1 and the inner box 4. 6 is the freezer 2
And a heat insulating partition which partitions the refrigerator compartment 3. 7 is a freezer 2
, A fan for sending cool air to each of the above-mentioned chambers, a defrosted water tray 9 provided below the evaporator 7, a pipe 10 made of aluminum or the like connected to the bottom of the defrosted water tray 9 , 11 are water guide pipes connected to the lower end of the pipe 10. A drain hose 12 is buried in the heat insulating material 5 and is connected to the water pipe 11 at an upper end. Reference numeral 13 denotes a machine room, 14 denotes a compressor, and 15 denotes an evaporating dish for receiving defrost water flowing out of the drain hose 12. 7a is a heater for heating the evaporator 7 to defrost.

[0005] The operation of the refrigerator having the above-described structure will be described below. Defrosted water from the evaporator 7 heated by the heater 7a passes through the pipe 10 penetrating the heat insulating partition 6 from the defrosted water receiving tray 9 as shown by the arrow, reaches the water guide pipe 11, the drain hose 12, and evaporates. Drained to plate 15. Next, the defrost water collected in the evaporating dish 15 is supplied to the compressor 1.
4 evaporates into the outside air by heat.

[0006]

However, the structure of the above-mentioned conventional defrosting water drainage path is such that the defrosting water draining path provided by the evaporator 7 is provided in the vicinity of the evaporator 7 in order to prevent frost formation on the drainage path due to the cool air from the freezing compartment 2. The use of a heater 7a for use in disposing a pipe 10 made of a good conductor of heat, such as aluminum, for transmitting the heat, or the use of a water pipe 11 have the disadvantage of increasing the number of parts.

Further, as described above, the pipe 10, the water pipe 1
1, the increased number of connecting portions of the drain hose 12 has a drawback that a more accurate mounting work is required to prevent water leakage.

An object of the present invention is to solve the conventional problems, and an object of the present invention is to provide a drain path for defrost water that does not increase the number of parts and does not require highly accurate mounting work.

[0009]

In order to achieve this object, the present invention relates to a method in which a drain hole provided in a lower portion of a refrigerator evaporator is directly connected to a drain hole.
A drain hose is connected to form a drain path for defrost water.

[0010] Thus, it is possible to provide a drain path for defrosted water which does not increase the number of parts and does not require a highly accurate mounting operation.

Further, in the present invention, since the drain hose is disposed along the freezer compartment, a heater for preventing icing in the drain hose is disposed. This heater is extended to the vicinity of the upper end of the drain hose to prevent frost and ice from forming near the drain hole at the lower part of the refrigerator compartment.

As a result, it is possible to provide a drain path for defrosting water in which frost formation is prevented without increasing the number of parts.

[0013]

DETAILED DESCRIPTION OF THE INVENTION The invention as set forth in claim 1 of the present invention comprises a freezing room, a refrigerator room located above the freezing room,
A freezer evaporator and a refrigerator evaporator, a cooling fan for sending cool air to each of the above-mentioned chambers, a machine room in which a compressor and an evaporating dish for defrost water are disposed, and a defrost water of the refrigerator evaporator. A drain hose leading to an evaporating dish, wherein the drain hose is connected to a drain hole provided below the refrigerating compartment evaporator, and is configured to drain through a heat insulating material to an evaporating dish in a machine room. , And has the function of forming a drainage path without using a water pipe or the like.

According to a second aspect of the present invention, in addition to the first aspect, a heater is provided at least near the upper end of the drain hose, and the heater passes through the heat insulating material in the freezer compartment. By using a heater for preventing icing in the drain hose, it is possible to simultaneously prevent frost formation and icing on the drain hole portion.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a drainage path for defrost water in a refrigerator according to the present invention will be described below with reference to the drawings. The same components as those in the related art are denoted by the same reference numerals, and detailed description is omitted.

FIG. 1 is a schematic longitudinal sectional view of a refrigerator according to an embodiment of the present invention. 2 and 3 are cross-sectional views of a main part of the embodiment.

1, 2 and 3, 1 is an outer box, 2
Is a freezing room provided at the lower part of the freezer refrigerator, 3 is a refrigerating room provided at the upper part of the freezing room 2, 4 is an inner box, 5 is a heat insulating material filled between the outer box 1 and the inner box 4. Reference numeral 6 denotes a heat insulating partition that partitions the freezing room 2 and the refrigeration room 3. 9 is a saucer for defrosted water,
A drain hose 12 is embedded in the heat insulating material 5. 13 is a machine room, 14 is a compressor, and 15 is an evaporating dish. 16 is a freezer evaporator provided behind the freezer 2;
Is a refrigerating room evaporator provided behind the refrigerating room 3, and the above-mentioned defrost water receiving tray 9 is disposed below. Reference numeral 18 denotes a freezing room cooling fan, and 19 denotes a refrigerating room cooling fan that sends cool air to each room to cool it. Reference numeral 20 denotes a drain hole provided integrally with the inner box 4, which is located below the refrigerating compartment evaporator 17, and an outlet 9a of the defrost water receiving tray 9 is fitted inside. Further, the drain hole 12 is provided with the drain hose 12.
The upper end is connected directly to the outlet 9a.
Reference numeral 21 denotes a heater that covers the drain hose 12.

The operation of the defrost water drainage path configured as described above will be described below. The defrost water from the refrigerating compartment evaporator 17 heated by a heater or the like (not shown) falls to the defrost water receiving tray 9, and is drained from the outlet 9 a and further directly to the drain hole 20. Flow into 12,
The water is drained to the evaporating dish 15 provided in the machine room 13. Next, the defrost water collected in the evaporating dish 15 is evaporated into the outside air by heat discharged from the compressor 14.

The heater 21 is provided so as to cover substantially the upper end to the lower end of the drain hose 12.
Prevent frost and icing near zero.

Accordingly, it is possible to discharge the defrost water from the refrigerator compartment evaporator 17 to the evaporating dish 15 in the machine room 13.

As described above, the drain path of the defrost water of the present embodiment includes the defrost water receiving tray 9, the drain hole 20 provided integrally with the inner box 4, the drain hose 12, and the heater 21. Then, the drain hose 12 is directly connected to the drain hole 20, and the entire drain hose 12 from the upper end to the lower end is heated by the heater 21.
The defrosted water can be drained to the evaporating dish in the machine room without blocking the drainage path due to freezing.

Incidentally, the upper end of the drain hose 12 may be directly connected to the outlet 9a of the defrost water receiving tray 9. When the heat insulating material 5 is made thicker so that the drain hose 12 does not freeze due to the cooling action of the freezer evaporator 16, the heater 21 is not particularly provided. In such a case, the heater 21 may be provided only near the upper end of the drain hose 12.

[0023]

As described above, according to the first aspect of the present invention, a drain hole for defrost water is provided below the refrigerator evaporator.
The drain hose is directly connected to the drain hole, which eliminates the need for parts such as water pipes as in the prior art, thus reducing the number of connecting parts, simplifying the structure and simplifying the connection work, and taking care of water leakage. It can be easier than before.

The invention described in claim 2 is the first invention.
In addition to the invention described in (1), by providing a heater at least near the upper end of the drain hose, the pipe made of a good heat conductor used in the drain hole in the conventional technology becomes unnecessary, and it is inexpensive, and the connection work is easy. it can. Furthermore, it is possible to use a heater for preventing icing of the drain hose in the freezer compartment at the same time as a heater for preventing icing near the drain hole, which makes it possible to reduce the wiring and the like as compared with the case where a special heater is installed. Work and configuration can be simplified.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a refrigerator according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of the embodiment.

FIG. 3 is a cross-sectional view of a main part of a drain path of defrost water according to the embodiment.

FIG. 4 is a schematic vertical sectional view of a conventional refrigerator-freezer.

FIG. 5 is a sectional view of a main part of a drain path of defrost water of the refrigerator.

[Explanation of symbols]

 2 Freezer room 3 Refrigerator room 4 Inner box 5 Insulation material 12 Drain hose 13 Machine room 14 Compressor 15 Evaporating dish 16 Freezer room evaporator 17 Cold room evaporator 18 Fan for freezing room cooling 19 Fan for cold room cooling 20 Drainage Hole 21 heater

Claims (2)

[Claims] 1. A freezing compartment, a refrigerating compartment located above the freezing compartment, a freezing compartment evaporator and a refrigerating compartment evaporator provided behind each of the compartments, and a cooling fan for each of the compartments. A machine room provided with a compressor and an evaporating dish, a defrosting water drain hole located below the refrigerator compartment evaporator, and a defrost water drain hose, and an upper end of the drain hose is provided with the drain hole. Refrigerator connected directly to the refrigerator. 2. At least near the upper end of the drain hose,
The refrigerator according to claim 1, further comprising a heater.