JPH02233969A - Refrigerator - Google Patents

Abstract

PURPOSE:To increase the efficiency of an effective inner volume, to improve cooling efficiency, and to uniformize frosting by s method wherein the upper part of a vaporizer is mounted to the corner part of a cooling chamber, the lower part thereof is located in a place separate away from a heat insulating wall, and the end part of a drain pan is projected from the end part of the lower part of the vaporizer. CONSTITUTION:Cold air discharged from a cooling fan 17 flows through a louver 22 to the interior of a refrigerating chamber 9. After the cold air cools food placed on a shelf 10, it is sucked from the lower part of a partition wall A20. After the cold air flows through a space part between a drain pan 27 and a lower part 18 of a heat insulating wall 24, it flows through s spreading-toward-end type space 31 between a vaporizer 15 and a side part 19 of the heat insulating wall 24. In this case, since a drain pan 27 has a protrusion part 30 protruded from an end part 29 of a lower part 28 of the vaporizer 15 toward the heat insulating wall 24, air sucked in the vaporizer 15 also flows in the direction of an upper part 26 of the vaporizer 15, and uniformly flows to the suction side of the vaporizer 15. Uniformization of frosting enables improvement of cooling efficiency through prevention of the occurrence of partial choking. Since the cooling fan 17 is mounted above the vaporizer 15, the space of a cooling chamber 14 can be utilized effectively.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to the arrangement of an evaporator and air passage configuration for cooling a refrigerator compartment.

BACKGROUND OF THE INVENTION In recent years, as a configuration for cooling the refrigerating compartment of a refrigerator, an indirect cooling method in which cold air is circulated using an evaporator and a blower fan is often used because it does not require frost blowing by the user.

An example of the cooling and air passage configuration of a conventional refrigerator will be described below with reference to the drawings as shown in Fig. 2. This will be explained using FIGS. 3 and 4.

Reference numeral 1 is an under-counter type refrigerator used in cooking areas such as restaurants, and the main body is housed in an oblong insulating box 3 having a plurality of refrigerator compartment doors 2a, 2b, and 2c each made of an insulating material at the front opening. Compressor 4 is installed on the left side of the main body.
A machine room 7 is formed in which a condenser fan 5 and a condenser 6 are housed.

Reference numeral 8 denotes a heat insulating wall made of an outer box 8a, an inner box 8b made of synthetic resin, and a foamed heat insulating material 8C filled between both boxes 8a and ab, and a refrigerator compartment 9 for cooling and preserving food.
It consists of The refrigerator compartment 9 is provided with a shelf 10 on which foods are placed.

12 is a heat insulating wall provided in the upper part of the machine room 7, and is press-inserted into the side opening 13 of the heat insulating wall V8.

The heat insulating wall 12 is a cooling chamber 1 for generating cold air.
4.

The cooling chamber 14 is equipped with an evaporator 16, a drain pan 16 for receiving drain water exposed from the evaporator 15, and a cooling fan 17 for blowing cold air cooled by the evaporator 15. Then, the drain pan 16 and the lower part 18 of the insulating wall 12 are installed so that the air introduced into the evaporator 15 flows smoothly.
A certain space is provided between the evaporator 16 and the side surface 19 of the heat insulating wall 12.

2o is a partition wall A for introducing relatively warm cold air from the bottom of the refrigerator compartment 9 to prevent a short circuit with the discharged air, and is fixed to the drain van 16.

Further, both side surfaces of the evaporator 15 are fixed so as to be sealed by the partition wall B21, and are also fixed so as to be sealed together with the drain pan 16. Furthermore, the partition wall B21 is
The partition wall A20 is also sealed and fixed, and the cooling fan 1
7. Evaporation Co., Ltd. 15 is constructed as a completely sealed body.

22 is a looper for sending the cold air generated in the evaporator 15 to the refrigerator compartment 9 via the cooling fan 17, and is for stratifying the cold air discharged from the cooling fan 17.

Reference numeral 23 denotes a drain hole, which is used to guide drain water flowing out from the drain pan 16 to the outside of the heat insulating wall 12.

Problems to be Solved by the Invention However, in the above arrangement, the evaporator 15 of the cooling chamber 14 and the cooling fan 1 must be installed in parallel, which increases the width of the cooling chamber 14 and increases the width of the refrigerator 1. The main body had to be enlarged, and the effective internal volume efficiency (effective internal volume/total volume) of the refrigerator compartment 9 was reduced. Also, in order to increase the effective internal volume efficiency, the side surface 19 of the heat insulating wall 12 and the evaporator 16 are
Although various attempts have been made to narrow the distance between the cooling fan 17 and the evaporator 15, the flow of cold air is disturbed or the cold air flows only at the lower part of the evaporator 15, resulting in frost formation. However, there have been problems in that the temperature has become non-uniform and the cooling efficiency has also been deteriorated.

In view of the above-mentioned problems, the present invention is capable of improving the effective internal volume efficiency, improving cooling efficiency, and making frost formation uniform.

Means for Solving the Problems In order to solve the above problems, the technical means of the present invention is to provide the upper part of the evaporator at a corner of the cooling chamber, the lower part to a location away from the heat insulating wall, and the drain pan. The end of the evaporator is configured to protrude from the lower end of the evaporator.

Effects According to the present invention, with the above-described configuration, the suction air from the refrigerator compartment flows uniformly to the suction side of the evaporator, thereby making it possible to uniformize frost formation in the evaporator and improve cooling efficiency.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. Components that are the same as those in the conventional example are designated by the same numbers and detailed explanations will be omitted. FIG. 1 is a sectional view of a refrigerator main body according to an embodiment of the present invention.

In the figure, reference numeral 24 denotes a heat insulating wall cut with an upper corner part 26 inclined, and is provided so that the upper part 26 of the evaporator 16 is in close contact with the wall. The drain van 27 is the evaporator 16
The partition wall A21 and the partition wall B22 are sealed and fixed so that they are in close contact with the lower part 28 of the partition wall A21 and the partition wall B22. The drain pan 27 also extends from the end 29 of the lower part 28 of the evaporator 16 to the side surface 19 of the heat insulating wall 24.
A protrusion 3o is provided that protrudes in the direction of.

The lower part 28 of the evaporator 16 is configured to be inclined away from the heat insulating wall 24, thereby providing a diverging space 31.

Further, the cooling fan 17 is provided above the center of the evaporator 16.

The operation of the refrigerator configured as above will be explained below.

First, the cold air discharged from the cooling fan 17 is transferred to the louver 2.
2, flows inside the refrigerator compartment 9, cools the food (not shown) placed on the upper part of the shelf 1o, and is sucked in from the lower part of the partition wall A20, and flows into the drain pan 27 and the lower part 18 of the heat insulating wall 24. After flowing through the space between the evaporator 15 and the heat insulating wall 24
The water flows through the wide-spread space 31 between the side surfaces 19 of. At this time,
Since the drain pan 27 is provided with a protrusion 3o that protrudes from the end 29 of the lower part 28 of the evaporator 16 in the direction of the heat insulating wall 24, the air sucked into the evaporator 16 is directed toward the upper part 26 of the evaporator 16. and evenly flows to the suction side of the evaporator 15.

Thereafter, a cycle is formed in which the air returns to the cooling fan 17.

As described above, according to this embodiment, the lower part of the evaporator 15,
A wide end space 31 widened between the side wall 19 of the heat insulating wall 24
and the drain pan 27 is located at the lower part 2 of the evaporator 15.
Since the structure includes a protrusion 30 that protrudes from the end 29 of the heat insulating wall 24 toward the side surface 19 of the heat insulating wall 24, the flow of cool air is smooth, and uniform frost formation prevents local clogging. In addition to preventing this and increasing cooling efficiency, since the cooling fan 17 is provided above the evaporator 16, the space in the cooling chamber 14 can be used effectively, and the effective internal volume efficiency also increases.

Effects of the Invention As described above, the present invention provides a groove structure in which the upper part of the evaporator is provided close to the corner part of the heat insulating wall constituting the cooling chamber, and the lower part of the evaporator is kept away from the side part of the heat insulating wall. 111 of insulation walls
A wide-spread space is provided between the face part and the evaporator, and the drain pan has a protruding part that protrudes from the lower end of the evaporator toward the face part of the heat insulating wall. The cold air flowing through the evaporator flows smoothly, and the uniform frosting prevents local clogging, which not only improves cooling efficiency, but also allows the cooling fan to be installed above the center of the evaporator outlet, making it easier to cool the cooling chamber. It is possible to make effective use of Svene and increase the effective internal volume efficiency.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a refrigerator main body according to an embodiment of the present invention;
3 is a front sectional view of FIG. 2, and FIG. 4 is a sectional view taken along line AA' of FIG. 3. 1... Refrigerator, 2... Door, 8...
...insulation wall, 9...refrigeration room, 14...
Cooling room, 15...Evaporator, 17...Cooling fan, 19...Side part of insulation wall, 20...
...Partition wall A, 21...Partition wall B, 24.
...Insulation wall, 26 ...Corner section, 26
...Top of the evaporator, 27...Drain pan, 28...Bottom of the evaporator, 29...
Lower end of evaporator, 30... Protrusion, 31.
...Suehiro type space. Name of agent: Patent attorney Shigetaka Awano and 1 other person 2nd
Figure 2+ --- B

Claims (1)

[Claims] It consists of a refrigerating room and a cooling room each having a heat insulating wall, and inside the cooling room there is an evaporator, a cooling fan installed in parallel with the evaporator, partition walls provided on both sides of the evaporator, and a lower part of the cooling room. and a partition wall provided around the cooling fan, the upper part of the evaporator is located at a corner of the insulating wall, the lower part of the evaporator is located away from a side part of the insulating wall, and the The evaporator is inclined, a widening space is provided between the side surface of the heat insulating wall and the evaporator, and the drain pan is a protrusion that projects from a lower end of the evaporator toward the side surface of the heat insulating wall. A refrigerator characterized by having a section.