JP2002318058A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator so constituted that it shortens a time for removing the frost settling over a refrigerant pipe constituting a cooler of the refrigerator and improves the efficiency of defrosting. SOLUTION: In the present refrigerator, a first cooler 10 having a connecting pipe 13 for a refrigerating chamber 7 and a vegetable chamber 8 which is fitted to the rear of the vegetable chamber 8, and a first blower 17, are disposed and a second cooler 11 having a connecting pipe 14 fitted to the rear of a freezing chamber 9 and a second blower 18 are disposed, while the two coolers 10 and 11 are connected by a connecting pipe 15. The connecting pipe 14 connected to the second cooler 11 is extended laterally in the vicinity of the upper part of the second cooler 11 and the extended connecting pipe 14 is connected to the first cooler 10 through the connecting pipe 15. In this case, outlets of the connecting pipe 13 of the first cooler 10 are provided at positions on the right and left side directed reversely to each other and are connected to the connecting pipe 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator, and more particularly, to a structure for removing frost formed on a refrigerant pipe constituting a cooler of a refrigerator.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, for example, a first conventional refrigerator has an outer box 2, an inner box 3, and a foam insulating material 4. As shown in FIG.
The interior of the heat-insulating box 1 is divided into a refrigerator compartment 7, a vegetable compartment 8, and a freezer compartment 9 by the heat-insulating partition members 5, 6, and the refrigerator compartment 7 and the vegetables are assembled behind the vegetable compartment 8. A first cooler 10 and a first blower 17 having a connecting pipe 13 for the chamber 8 are arranged, and a second cooler 11 and a second blower 18 having a connecting pipe 14 to be assembled behind the freezing chamber 9 are provided. Disposed, the two coolers 10,
11 are connected by a connecting pipe 15.

[0003] The two coolers 10 and 11 are composed of a number of fins 20 stacked laterally at a predetermined interval and a plurality of fins 20.
The first cooling device 10 and the second cooling device 11 are provided with a plurality of heat transfer tubes 21 orthogonal to each other.
5 at both ends of the connecting pipes 1 of the two coolers 10 and 11
3, and 14 were connected in series by welding.

In addition, the blowers 17, 18 for forced air circulation are provided above the coolers 10, 11, respectively.
The respective defrost heaters 22 and 23 are disposed below, and the drain gutters 25 and 26 are provided below the respective defrost heaters 22 and 23, and the cooling down to the drain gutters 25 and 26 is performed. Vessel 1
The defrost waters 0 and 11 flow into the evaporating dish 30 disposed above the compressor 16 via the drain pipes 28 and 29 and evaporate.

[0005] In the refrigerator of the second conventional example, as shown in FIGS. 7 and 8, for example, the inside of a heat insulating box 1 composed of an outer box 2, an inner box 3, and a foamed heat insulating material 4 is provided. The refrigerator compartment 7, the vegetable compartment 8, and the freezer compartment 9 are partitioned by 5 and 6, and the vegetable compartment 8 and a plurality of fins 20 stacked laterally at predetermined intervals behind the freezer compartment 9. The cooler 12 composed of a plurality of heat transfer tubes 21 orthogonal to the fins 20 is connected to the cooler 12 and the connection pipe 14 by welding.

A blower 19 for forced air circulation is provided above the cooler 12, and a defrost heater 24 is provided below the cooler 12, and a drain gutter 27 is provided below the defrost heater 24. The defrost water of the cooler 12 flowing down to the drain gutter 27 is supplied to the compressor 1 through a drain pipe 29.
6, and flows into the evaporating dish 30 arranged at the upper part of the evaporator 6, and evaporates.

However, in the refrigerator of the first conventional example, the connecting pipe 15 between the two coolers 10 and 11 and the connecting pipe 14 connected to the second cooler 11 are connected to the two coolers 10 and 11. In the refrigerator of the second conventional example, the connecting pipe 14 is connected to the cooler 12.
Therefore, the removal of the frost formed on the connection pipe 14 and the connection pipe 15 is provided below the second cooler 11 and the cooler 12 at the time of defrosting. There has been a problem that the heat of the defrost heaters 23 and 24 is hard to reach, that it takes a long time to defrost, and that frost remains.

[0008]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention is intended to reduce the time required for removing frost formed on a refrigerant pipe constituting a refrigerator cooler and improve the defrosting efficiency. The purpose is to provide a refrigerator that has been made.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a heat insulating box formed by filling a foam heat insulating material between an outer box and an inner box. A plurality of fins that are sectioned and stacked laterally at predetermined intervals behind the upper storage room, a first cooler including a plurality of heat transfer tubes and connection tubes orthogonal to the fins, and a lower storage room A plurality of fins laterally stacked at a predetermined interval behind the second fin, a second cooler composed of a plurality of heat transfer tubes and connection tubes orthogonal to the fins, and a connecting pipe connecting the two coolers are provided. In a refrigerator provided with a defrost heater at a lower portion of each of the coolers, a connecting pipe of the second cooler is extended in a left-right direction near and above the second cooler, and the extended connecting pipe is It is configured to be connected to the first cooler via the connection pipe.

The outlet of the connecting pipe of the first cooler is provided at a position opposite to the left and right, and is connected to the connecting pipe.

The fin of the second cooler has a predetermined width removed.

The fin of the second cooler is formed to have a predetermined width and a low density.

[0013] The inside of an insulating box body filled with a foamed insulating material between the outer box and the inner box is vertically divided by a plurality of heat insulating partitions, and a predetermined space is provided behind the upper storage room and the lower storage room. In a refrigerator provided with a plurality of fins stacked in the horizontal direction and a plurality of heat transfer tubes and connection tubes orthogonal to the fins, and provided with a defrost heater at a lower part of the cooler, The connection pipe of the vessel extends in the left-right direction near the top of the cooler.

The fin of the cooler is configured to have a predetermined width removed.

The fins of the cooler are formed to have a predetermined width and a low density.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below as examples based on the attached drawings. FIG. 1 is a side sectional view (A) of a refrigerator body according to a first embodiment of the present invention,
FIG. 2 is a front view (B) showing the structure of the cooler, FIG. 2 is a perspective view of a main part showing the structure of the cooler of the first embodiment of the present invention, and FIG. 3 is a second embodiment of the present invention. FIG. 4A is a side sectional view of a refrigerator main body, and FIG. 4B is a front view showing a structure of a cooler. FIG. . Note that the same reference numerals are used for the same parts as in the related art.

FIG. 1 (A) shows a schematic configuration of a refrigerator main body from the side, and 1 is an outer box 2 made of a steel plate.
And an insulating box body made of a synthetic resin inner box 3 and a foamed heat insulating material 4 and the like.
The refrigerator compartment 7, the vegetable compartment 8, and the freezer compartment 9 are partitioned in this order from the top.

A first cooler 10 and a first blower 17 having a connecting pipe 13 for the refrigerator compartment 7 and the vegetable compartment 8 to be assembled behind the vegetable compartment 8 are arranged. A second cooler 11 having a connection pipe 14 and a second blower 18 are provided, and the two coolers 10 and 11 are connected by a connection pipe 15.

The blowers 17, 18 for forced air circulation are provided above the coolers 10, 11,
The respective defrost heaters 22 and 23 are disposed below, and the drain gutters 25 and 26 are provided below the respective defrost heaters 22 and 23, and the cooling down to the drain gutters 25 and 26 is performed. Vessel 1
The defrost waters 0 and 11 flow into the evaporating dish 30 disposed above the compressor 16 via the drain pipes 28 and 29, respectively.
It is designed to evaporate.

As shown in FIG. 2, the two coolers 10, 1
Reference numeral 1 denotes a large number of fins 20 stacked at predetermined intervals in the horizontal direction.
And a plurality of heat transfer tubes 21 orthogonal to the fin 20. The first cooler 10 and the second cooler 1
One end of the connecting pipe 15 is connected to the two coolers 10, 11
Are connected in series to each of the connection pipes 13 and 14 by welding.

Then, the connecting pipe 14 connected to the second cooler 11 is extended in the left-right direction near the upper part of the second cooler 11, and the extended connecting pipe 14 is connected to the connecting pipe 15. The first cooler 10 is connected to the first cooler 10. In this case, the outlet of the connection pipe 13 of the first cooler 10 is provided in a position opposite to the left and right, and is connected to the connection pipe 15, so that the length of the connection pipe 15 can be shortened. , To prevent a decrease in cooling power.

In the embodiment, the connecting pipe 14 extends in the left-right direction near the upper part of the second cooler 11,
The connecting pipe 15 may be extended in the left-right direction near the upper part of the second cooler 11, and the extended connecting pipe 15 may be connected to the second cooler 11 via the connecting pipe 14.
(Not shown)

The fin 20 of the second cooler 11
Has a predetermined width. The fin 2
Instead of removing 0, the density of the fins 20 having a predetermined width may be formed sparsely. (Not shown)

In the refrigerator according to the second embodiment of the present invention, as shown in FIGS. 3 and 4, the inside of the heat-insulating box 1 composed of the outer box 2, the inner box 3, and the foam insulating material 4 is insulated. Partitions 5 and 6 divide the refrigerator compartment 7, the vegetable compartment 8, and the freezer compartment 9 into compartments, and the vegetable compartment 8 and a large number of fins stacked laterally behind the freezer compartment 9 at predetermined intervals. 20 and a plurality of heat transfer tubes 21 orthogonal to the fins 20.
2 is connected to the cooler 12 and the connection pipe 14 by welding.

A blower 19 for forced circulation of cool air is provided above the cooler 12, while a defrost heater 24 is provided below the cooler 12, and a drain gutter 27 is provided below the defrost heater 24. The defrost water of the cooler 12 flowing down to the drain gutter 27 is supplied to the compressor 1 through a drain pipe 29.
6, and flows into the evaporating dish 30 arranged at the upper part of the evaporator 6, and evaporates.

According to the present invention, the connection pipe 14 of the cooler 12 is provided.
Is extended in the left-right direction near the upper part of the cooler 12. Further, the fins 20 of the cooler 12 are configured to have a predetermined width. Instead of removing the fins 20, the fins 20 having a predetermined width may be formed with a low density. (Not shown)

In the above embodiment, the refrigerator having the refrigerator compartment 7, the vegetable compartment 8, and the freezing compartment 9 is described. However, the present invention is not limited to this. It is also possible to provide a switching room in which the room temperature (inside the refrigerator) can be switched between freezing and a temperature zone other than freezing. (Not shown) In the above-described embodiment, the first cooler 10 is arranged behind the vegetable compartment 8, but the first cooler 10 may be arranged behind the refrigerator compartment 7. (Not shown)

In the above configuration, in the refrigerator according to the first embodiment of the present invention, the connection pipe 14 of the two-cooler 11 is provided.
Is extended in the left-right direction near the upper part of the second cooler 11, and in the refrigerator according to the second embodiment of the present invention, the connecting pipe 14 of the cooler 12 is connected to the cooler 12 The frost formed on the connection pipes 14 and the connection pipes 15 is removed by extending in the left-right direction in the vicinity of the upper part of each of the cooling pipes 11 and 12 at the time of defrosting. The heat of the frost heaters 23 and 24 is easily received, the defrosting time can be shortened, and a problem that frost remains may be eliminated.

[0029]

As described above, according to the present invention,
A refrigerator is provided in which the time for removing frost formed on the refrigerant pipes constituting the cooler of the refrigerator is reduced and the defrosting efficiency is improved.

[Brief description of the drawings]

FIG. 1A is a side sectional view of a refrigerator body according to a first embodiment of the present invention, and FIG. 1B is a front view showing the structure of a cooler.

FIG. 2 is a perspective view of a main part showing a structure of a cooler according to the first embodiment of the present invention.

FIG. 3 is a side sectional view (A) of a refrigerator body according to a second embodiment of the present invention, and a front view (B) showing a structure of a cooler.

FIG. 4 is a main part perspective view showing the structure of a cooler according to a second embodiment of the present invention.

FIG. 5A is a side sectional view of a refrigerator body according to a first conventional example, and FIG. 5B is a front view showing the structure of a cooler.

FIG. 6 is a perspective view of a main part showing a structure of a cooler of a first conventional example.

FIG. 7A is a side sectional view of a refrigerator body according to a second conventional example, and FIG. 7B is a front view showing the structure of a cooler.

FIG. 8 is a perspective view of a main part showing a structure of a cooler according to a second conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation box 2 Outer box 3 Inner box 4 Foam insulation material 5, 6, Thermal insulation partition 7 Refrigerator room 8 Vegetable room 9 Freezer room 10 First cooler 11 Second cooler 12 Coolers 13, 14 Connecting pipe 15 Connection Pipe 16 Compressor 17 First blower 18 Second blower 19 Blower 20 Fin 21 Heat transfer pipe 22, 23 24 Defrost heater 25, 26, 27 Drain gutter 28, 29 Drain pipe 30 Evaporating dish

Claims (7)

[Claims] 1. An interior of an insulating box body filled with a foamed insulating material between an outer box and an inner box is vertically divided by a plurality of heat insulating partitions, and is laterally arranged at a predetermined interval behind an upper storage room. A plurality of stacked fins, a first cooler composed of a plurality of heat transfer tubes and connection tubes orthogonal to the fins, and a plurality of fins stacked laterally at predetermined intervals behind a lower storage room. And a second cooler comprising a plurality of heat transfer tubes and connection tubes orthogonal to the fins, and a connecting pipe connecting the two coolers, and a refrigerator provided with a defrost heater below each of the coolers. In, the connecting pipe of the second cooler is extended in the left-right direction near the upper part of the second cooler, and the extended connecting pipe is connected to the first cooler via the connecting pipe. A refrigerator characterized by becoming. 2. The refrigerator according to claim 1, wherein an outlet of the connection pipe of the first cooler is provided at a position opposite to the left and right, and is connected to the connection pipe. 3. The refrigerator according to claim 1, wherein a fin of the second cooler is removed by a predetermined width. 4. The refrigerator according to claim 1, wherein the fins of the second cooler are formed to have a predetermined width and a low density. 5. The inside of a heat insulating box formed by filling a foam heat insulating material between an outer box and an inner box is divided into upper and lower parts by a plurality of heat insulating partitions. In a refrigerator provided with a plurality of fins stacked laterally at predetermined intervals and a cooler composed of a plurality of heat transfer tubes and connection tubes orthogonal to the fins, and provided with a defrost heater at the lower part of the cooler, A refrigerator characterized in that a connecting pipe of the cooler extends in the left-right direction near the upper part of the cooler. 6. The refrigerator according to claim 5, wherein a fin of the cooler is removed by a predetermined width. 7. The refrigerator according to claim 5, wherein the fins of the cooler are formed with a sparse density of a predetermined width.