JP3420109B2 - refrigerator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement configuration of an electric component storage section for storing an electronic control board of a refrigerator.

[0002]

2. Description of the Related Art As a conventional refrigerator, for example, Japanese Patent Laid-Open No.
There is one disclosed in Japanese Patent Publication No. 87443. Hereinafter, the conventional refrigerator will be described with reference to the drawings.

FIG. 8 is a sectional view of a conventional refrigerator.

In FIG. 8, 1 is a refrigerator body, 2 is an outer box made of steel plate, 3 is an inner box made of resin, and 4 is a heat insulating material which is foam-filled between the outer box 2 and the inner box 3. . Reference numeral 5 designates a recessed portion in the upper rear portion of the outer box 2, that is, an electric component storage portion formed by denting the outer surface of the outer box.
Is stored. Reference numeral 7 is a closing plate made of a steel plate that covers the electric component storage section 5. Reference numeral 8 is a compressor of a refrigerating cycle which is installed in the lower rear part of the refrigerator body 1 and driven by an electric motor.

Regarding the refrigerator constructed as described above,
The operation will be described below.

The electronic control board 6 housed in the electric part housing section 5 is energized to generate heat when the compressor 8 is in operation.
Since the closing plate 7 is made of a steel plate, it has good heat conduction, and since the area of the closing plate 7 can be wide, it is possible to efficiently exhaust heat, and it is possible to use parts with a large amount of heat generation, which expands the freedom of design. .

Next, as another conventional example, Japanese Patent Laid-Open No. 10-14
There is one disclosed in Japanese Patent No. 8463.

Another conventional refrigerator will be described below with reference to the drawings.

FIG. 9 is a perspective view of another conventional refrigerator.

In FIG. 9, 9 is a refrigerator body, and 10
Is an outer box made of steel plate, 11 is an inner box made of resin, and 12 is a heat insulating material foam-filled between the outer box 10 and the inner box 11. 1
Reference numeral 3 is a storage chamber formed inside the refrigerator body 9.
Reference numeral 14 is a machine room formed in the lower rear part of the refrigerator main body 9, and 15 is a compressor of a refrigeration cycle which is arranged in the machine room 14 and driven by an electric motor.

Reference numeral 16 is a reinforcing plate integrally provided on the bottom side of the outer box 10 in the machine chamber 14, and 17 is a side end portion in the machine chamber 14 which is screwed to the reinforcing plate 16. It is a fixed electrical component storage unit. The electrical component storage section 1
Reference numeral 7 denotes a storage box 18 and a lid 19 for closing the opening of the storage box 18, and an electronic control board 20 is stored therein.

With respect to the refrigerator configured as described above,
The operation will be described below.

The electronic control board 20 accommodated in the electric component storage section 17 is energized and generates heat when the compressor 15 is operating, but since the electric component storage section 17 is arranged in the machine room 14, it is stored in the storage room. It is said that the heat effect on the 13 side can be reduced and an increase in power consumption can be suppressed.

[0014]

However, in the configuration of the above-mentioned conventional example, the distance between the electronic control board 6 and the controlled parts to be controlled, particularly the compressor 8, is large, and the cost for wiring increases. However, there is a drawback that the assembly work becomes complicated.

The present invention solves the conventional problems, and an object of the present invention is to shorten the distance between the electronic control board and the controlled parts to simplify the electric wiring.

Further, in the configuration of the other conventional example described above, since the electric component housing portion 17 is provided in the space inside the machine room 14 so as not to be separated from the compressor 15 which emits high temperature, the ambient temperature of the electronic control board 20. However, there is a drawback that the heat resistance reliability and the life of the components attached to the electronic control board 20 are affected.

The present invention solves the conventional problems, and an object of the present invention is to suppress the rise of the ambient temperature around the electronic control board and improve the reliability.

[0018]

In order to achieve this object, the present invention provides a machine room provided with a compressor at the rear of the storage room at the lower part of the refrigerator body, and a cooler provided at the rear of the storage room. In the heat insulating wall, a recessed electric component storage portion is provided, and the electronic control board is arranged in the electric component storage portion.

This simplifies the electrical wiring between the electronic control board and the controlled parts.

Further, according to the present invention, the compressor is provided on the side of the cooler and the electric component housing with a heat insulating wall therebetween.

As a result, the temperature reliability of the electronic control board is improved.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a refrigerating cycle arranged in the lower part of the refrigerator main body, a machine room provided behind the storage room, and the machine room. A compressor, a cooler provided at the rear of the storage chamber, an electric component storage portion provided in a concave shape in a heat insulating wall at the rear of the cooler, and an electronic control board arranged in the electric component storage portion. a rear cover for covering integrally with the back opening of the machine room and the rear opening of the electrical component housing, the cooling
Placed below the cooler to store and evaporate the defrost water in the cooler
And the disconnection that separates the evaporating tray from the electrical component storage section.
A heat wall, and at least the back cover and the battery.
A sealing member for the air component storage portion and the heat insulating wall that divides the evaporation tray
This is characterized in that the electronic control board and the controlled parts such as the compressor are shortened. Also,
No separate cover is required for the electrical component storage. Also,
The heat generated by the evaporating dish is prevented from entering the electrical parts storage.
It In addition, the steam generated in the evaporating dish enters the electrical parts storage
do not do.

The invention as set forth in claim 2 is a storage room provided in a lower portion of the refrigerator main body, a machine room provided behind the storage room, and a compressor for a refrigeration cycle provided in the machine room.
A cooler provided at the rear of the storage chamber, an electric component storage portion provided in a concave shape in a heat insulating wall at the rear of the cooler, and an electronic control board arranged in the electric component storage portion,
The compressor is provided so that the electric component storage section is not arranged immediately above the compressor, and is provided on the side of the cooler and the electric component storage section with a heat insulating wall therebetween to store defrost water of the cooler.
An evaporation pan for evaporation is placed below the cooler and
A heat insulating wall that separates the air parts storage section and the evaporation tray is installed to
And a rear opening of the machine room
Is provided with a rear cover, and at least the rear cover
Bar and heat insulation wall for partitioning the evaporating dish from the electric component storage section
Are pressed against each other with a seal member, and the heat of the compressor does not directly act on the electric component housing portion, and the external temperature rise of the electronic control board is suppressed. In addition, it is independent of the electrical component storage
No cover needed. In addition, the heat generated by the evaporating dish is an electrical component.
Invasion into the storage section is suppressed. Also, in the electrical parts storage
Water vapor generated in the evaporating dish does not enter.

[0024]

[0025]

[0026]

[0027]

Embodiments of the refrigerator according to the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a side sectional view of a refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a rear view of the refrigerator of the embodiment.

In FIGS. 1 and 2, reference numeral 21 denotes a refrigerator main body, which is constituted by a heat insulating wall 25 formed by foaming and filling a heat insulating material 24 between an outer box 22 made of a steel plate and an inner box 23 made of a resin. It Reference numeral 26 is a heat insulating partition wall that vertically partitions the interior of the refrigerator main body 21, and defines a refrigerating storage chamber 27 in the upper portion and a freezing storage chamber 28 in the lower portion.

Numeral 29 is a machine room provided behind the frozen storage room 28 via a heat insulating wall 25, and numeral 30 is the machine room 2
9 is a compressor of a refrigerating cycle arranged in 9. Reference numeral 31 is a cooler for the refrigeration cycle arranged in the rear of the freezer storage chamber 28, and 32 is a blower for forced ventilation arranged near the upper part of the cooler 31. Reference numeral 33 is a defrosting heater provided below the cooler 31.

On the other hand, reference numeral 34 is an electric component storage portion provided in a recessed shape behind the cooler 31 via the heat insulating wall 25,
Inside the compressor 30, a blower 32, a defrost heater 33
An electronic control board 35 for controlling controlled parts such as is housed. Further, 36 is a machine chamber cover that covers the opening of the machine chamber 29, and 37 is a cover that covers the opening of the electrical component storage 34.

Regarding the refrigerator constructed as described above,
The operation will be described below.

Electronic control board 3 for driving and controlling controlled parts
5 is stored outside the refrigerator behind the cooler 31,
The compressor 30, the blower 32, and the defrost heater 33, which are controlled parts, are arranged close to each other. Therefore, the electric wiring can be shortened and simplified, the cost can be reduced, and the number of man-hours can be reduced. In addition, the complicated wiring of the electric wiring is reduced, and the influence of radio noise interference can be reduced.

Further, the electronic control board 35 is housed in the electric component housing 34 formed in the heat insulating wall 25 in a concave shape so that the heat generated by the compressor 30 in the machine room 25 does not directly act. Therefore, the temperature rise of the components mounted on the electronic control board 35 and the electrical components housed in the periphery is reduced, and the reliability is enhanced.

(Embodiment 2) FIG. 3 is a side sectional view of a refrigerator according to Embodiment 2 of the present invention. FIG. 4 is a rear view of the refrigerator of the embodiment. FIG. 5 is a sectional view taken along line AA of FIG.

3 to 5, reference numeral 38 denotes a refrigerator main body, which is constituted by a heat insulating wall 42 formed by foaming and filling a heat insulating material 41 between an outer box 39 made of a steel plate and an inner box 40 made of a resin. It Reference numeral 43 denotes a heat insulating partition wall which vertically partitions the interior of the refrigerator main body 38, and defines a refrigerating and storing room 44 at the upper part and a freezing and storing room 45 at the lower part.

Reference numeral 46 denotes a cooler for the refrigeration cycle which is arranged at the rear of one of the left and right sides in the freezing storage chamber 45, and 47 denotes a blower for forced ventilation which is arranged near the upper portion of the cooler 46. Reference numeral 48 is a defrosting heater provided below the cooler 46, and 49 is for defrosting water of the cooler 46 melted by the defrosting heater 48 to pass through the heat insulating wall 42 and be led out of the refrigerator. It is a drainage pipe.

Reference numeral 50 denotes a machine room arranged on the other side of the frozen storage room 45 on the left and right sides, and a compressor 51 of the refrigeration cycle is arranged inside. The compressor 51 is provided side by side in the left-right direction with the cooler 46 and the heat insulating wall 42a being separated from each other. Reference numeral 52 denotes a condenser disposed at the bottom of the refrigerator main body 38, and 52a denotes the compressor 51 to the condenser 5
It is a condensing pipe leading to 2. Further, 53 is a cooler 46
A heat insulating wall 42 is provided under the condensation pipe 5 and
It is an evaporation tray for evaporation of defrost water that is accelerated by 2a, and is arranged immediately below the outlet side of the drain pipe 39.

Further, 54 is the heat insulating wall 4 behind the cooler 46.
2 is an electric component storage portion that is provided in a concave shape inside the refrigerator main body 38 and opens to the rear surface of the refrigerator main body 38, and electronic control for controlling controlled components such as the compressor 51, the blower 47, and the defrost heater 48 inside. A substrate 55 is stored.

Further, reference numeral 56 is a machine chamber cover for covering the rear opening of the machine chamber 50, and 57 is a cover for covering the rear opening of the electric component housing 54.

With respect to the refrigerator configured as described above,
The operation will be described below.

Electronic control board 5 for driving and controlling controlled parts
Since 5 is stored outside the refrigerator behind the cooler 46,
The compressor 51, the blower 47, and the defrost heater 48, which are controlled components, are arranged close to each other. In particular, since the cooler 46 and the compressor 51 are arranged side by side in the left-right direction to further reduce the distance in the height direction between them, the electric wiring can be further shortened and simplified, the cost can be reduced, and the man-hours can be reduced. In addition, the complicated wiring of the electric wiring is reduced, and the influence of radio noise interference can be further reduced.

Further, the electronic control board 55 is housed in an electric component housing portion 54 formed in a concave shape in the heat insulating wall 42, and the heat insulating function of the heat insulating wall 42a causes the compressor 5 to be stored in the machine room 50.
Since the heat generated by No. 1 does not act directly, the temperature rise of the components mounted on the electronic control board 55 and the electrical components housed in the periphery is reduced, and the reliability is enhanced. In particular, since the cooler 46 and the compressor 51 are arranged side by side in the left-right direction, the electric component storage section 54 is not arranged immediately above the compressor 51, so that it is not directly affected by the rising heat of the compressor, and the electronic control board is not affected. This has the effect of further suppressing the temperature rise of 55 and peripheral parts.

On the other hand, regarding the arrangement of the refrigeration cycle, the compressor 51 is displaced laterally from the center line of the refrigerator main body 38, and the ineffective space in the machine room 50 is compressed so that the refrigerator main body 3 can be compressed.
The width is reduced to about half the width of 8. Then, the ineffective space is contracted, and the depth and height dimensions are adjusted in the newly created space inside the refrigerator to maintain the cooling capacity, and the cooler 4 is provided.
6 is stored.

Therefore, the cooler 46 is provided above the compressor 51.
Is not provided to form an ineffective space in the width direction of the refrigerator, and the effective storage volume in the compartment increases. Further, by disposing the heavy compressor 51 and the cooler 46 side by side in the left-right direction, the center of gravity of the refrigerator main body 38 becomes a low center of gravity, and installation stability is increased.

Further, in consideration of the recent kitchen environment of the kitchen, since the effective volume is increased, the refrigerator main body 38 is used to reduce the depth of the refrigerator, so that the refrigerator can be installed easily without protruding from the surrounding cupboards. Can also be provided.

Further, from the viewpoint of the mounting efficiency of the cooling function parts and the cooling control parts as a whole, since the parts are collectively arranged behind and below the freezing storage chamber 45, a compact design with a very high mounting efficiency is achieved. Become. Therefore, the piping of the refrigeration cycle can be shortened and simplified, the cost is reduced, and the assembly workability is improved. In addition, if these integrated components are assembled in advance as a block structure in the manufacturing process and then assembled in the refrigerator main body 38, The work process can be greatly simplified.

Further, with such a block structure, it becomes easy to deal with commonization and standardization of parts depending on the size and type of the refrigerator, and it is possible to further reduce the cost and rationalize the production process. Furthermore, in recent years, from the viewpoint of environmental protection, efforts to recycle materials and parts for waste refrigerators have become active, but by adopting a block structure that integrates cooling function parts and cooling control parts, it is easy to use recycled parts and parts. Since the materials can be disassembled and removed, it is possible to provide a refrigerator structure that contributes to resource recycling.

(Embodiment 3) FIG. 6 is a rear view of a refrigerator according to Embodiment 3 of the present invention. FIG. 7 is a rear view of the refrigerator of the embodiment with the rear cover removed.

In FIGS. 6 and 7, reference numeral 58 is a refrigerator main body, and 59 is a back cover that integrally covers the back opening of the machine room 50 and the back opening of the electrical component storage 54. 60
Is a compressible seal member such as a closed-cell foam foam attached to a portion of the back cover 59 facing the outer peripheral edge of the electrical component storage portion 54, and the lower side thereof is the evaporation tray 53 and the electrical component storage portion. Insulating wall 42 separating 54
It is positioned so as to abut b. The outer periphery of the back cover 59 is screwed and fixed by a screw, and at the same time, the rear cover 59 is also screwed and fixed by a screw to a fixing portion 61 formed near the lower end of the electric component housing portion 54. The operation of the constructed refrigerator will be described below.

Since the back opening of the machine room 50 and the back opening of the electric component housing 54 are integrally covered by the back cover 59, there is no need to attach individual independent covers, reducing the number of mounting steps and reducing the number of parts. Cost reduction can be achieved by reduction.

In addition, the electric component storage portion 54 is provided with the heat insulating wall 42b.
Is insulated from the evaporating dish 53 arranged below by the back cover 59, and the back cover 59 is screwed and fixed by screws at the outer periphery and the facing portion of the fixed portion 61.
The seal member 60 attached to the
The outer peripheral edge including the heat insulating wall 42b is pressure sealed.

Therefore, the rising heat and steam generated by heating the defrosting water in the evaporation dish 53 by the condensing pipe 52a are blocked, and the electronic control board 55 is affected without directly entering the electric component housing portion 54. Does not reach. Therefore, it is possible to further enhance reliability and safety without promoting deterioration of durability of electric components and solder attached to the electronic control board 55.

Further, since the back cover 59 integrally covers the machine room 50 and the electrical component storage portion 54, the appearance of the back of the refrigerator main body 58 is improved and the design effect is enhanced.

[0055]

As described above, the invention according to claim 1 has a storage room provided in the lower part of the refrigerator body, a machine room provided behind the storage room, and a refrigeration cycle provided in the machine room. A compressor, a cooler provided at the rear of the storage chamber, an electric component storage portion provided in a concave shape in a heat insulating wall at the rear of the cooler, and an electronic control board arranged in the electric component storage portion. a rear cover for covering integrally with the back opening of the machine room and the rear opening of the electrical component housing portion, the cold
It is placed below the cooling unit to store and evaporate the defrost water in the cooling unit.
The evaporating dish to be separated and the electric part storing section and the evaporating dish are divided.
An insulating wall, at least the back cover, and
A seal part between the electrical component storage part and the heat insulation wall that divides the evaporating dish
It is characterized in that it is pressure-welded with a material, and the electrical wiring between the electronically controlled board and the controlled parts such as the compressor can be shortened and simplified, and the cost can be reduced and the man-hours can be reduced. In addition, it is possible to reduce the influence of radio noise interference. In addition, the heat of the compressor does not act directly and the temperature rise of the electronic control board and the peripheral parts is reduced, and the reliability is improved. Further, the heat generated by the evaporation dish is prevented from directly entering the electric component housing portion, and the reliability of the electronic control board and peripheral components is improved. Further, the cost can be reduced by reducing the man-hours for mounting the back cover and the number of parts.
In addition, the appearance of the back of the refrigerator body is improved, and the design effect is enhanced. Further, the rising heat and water vapor of the evaporating dish are blocked, and the electronic control board and peripheral parts are not affected, and the reliability and safety can be further enhanced.

According to a second aspect of the present invention, a storage chamber provided in the lower portion of the refrigerator main body, a machine room provided behind the storage room, a compressor for a refrigeration cycle provided in the machine room, and a storage chamber in the storage room A cooler provided at the rear, an electrical component storage portion provided in a concave shape in the heat insulating wall at the rear of the cooler, and an electronic control board arranged in the electrical component storage portion, wherein the electrical component storage portion is The compressor is installed on the side of the cooler and the electrical component housing with a heat insulating wall between them so as not to be placed directly above the compressor, and the defrost water of the cooler is stored and evaporated.
The evaporating dish is placed below the cooler,
A heat insulating wall for partitioning the storage section and the evaporation tray is provided, and
The back opening of the storage part and the back opening of the machine room are integrated
A rear cover for covering at least the rear cover
And the heat insulating wall that divides the electric component storage section and the evaporation dish.
With the seal members pressed together , the cooler and the compressor are arranged side by side in the left-right direction, and the distance in the height direction between the electronically controlled board and the controlled parts such as the compressor is further shortened. It can be further shortened and simplified, it is cheaper, and the work man-hour can be reduced. Moreover, the influence of radio noise interference can be further reduced. In addition, the heat generated by the evaporating dish is not directly transferred to the electrical component storage section.
Intrusion is suppressed and the reliability of electronic control boards and peripheral components is improved.
Go up. Also, the number of man-hours for mounting the back cover has been reduced and
The cost can be reduced by reducing Also, in the refrigerator body
The appearance of the back is improved and the design effect is enhanced. Also evaporation
The rising heat and water vapor of the dish are blocked, and the electronic control board and peripheral parts
To further improve reliability and safety without affecting the product
it can.

[0057]

[0058]

[0059]

[0060]

[0061]

[0062]

[0063]

[0064]

[0065]

[Brief description of drawings]

FIG. 1 is a sectional view of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a rear view of the refrigerator according to the embodiment.

FIG. 3 is a sectional view of a refrigerator according to a second embodiment of the present invention.

FIG. 4 is a rear view of the refrigerator according to the embodiment.

5 is a sectional view taken along the line AA of FIG.

FIG. 6 is a sectional view of a refrigerator according to a third embodiment of the present invention.

FIG. 7 is a rear view of the refrigerator of the embodiment with a rear cover removed.

FIG. 8 is a sectional view of a conventional refrigerator.

FIG. 9 is a perspective view of another conventional refrigerator.

[Explanation of symbols]

21 Refrigerator body 25 heat insulation wall 28 Frozen storage room (storage room) 29 Machine room 30 compressor 31 cooler 34 Electrical component storage 35 electronic control board 38 Refrigerator body 42 Insulation wall 42a heat insulation wall 42b heat insulation wall 45 Frozen storage room (storage room) 46 Cooler 50 machine room 51 compressor 53 Evaporating dish 54 Electrical Parts Storage 55 Electronic control board 58 Refrigerator body 59 back cover 60 seal member

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-10-238924 (JP, A) JP-A-5-187756 (JP, A) JP-A-7-63468 (JP, A) JP-A-10- 318653 (JP, A) JP 10-82571 (JP, A) JP 7-63473 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) F25D 29/00 F25D 19 / 00 540

Claims (2)

(57) [Claims] 1. A storage room provided at the bottom of a refrigerator body, a machine room provided at the rear of the storage room, a compressor for a refrigeration cycle provided in the machine room, and a cooling provided at the rear of the storage room. Container, an electric component storage portion provided in a concave shape in a rear heat insulating wall of the cooler, an electronic control board arranged in the electric component storage portion, a rear opening of the electric component storage portion, and the machine room. And a rear cover that integrally covers the rear opening of the unit, and is placed below the cooler to store defrost water for the cooler.
An evaporating dish for retaining and evaporating, the electric component storage section and the evaporating dish
And a heat insulating wall for partitioning at least the back cover.
-, And a heat insulating wall that partitions the electric component storage section and the evaporation tray
A refrigerator characterized in that a seal member is pressure-welded . 2. A storage room provided at the bottom of the refrigerator body, a machine room provided behind the storage room, a compressor for a refrigeration cycle provided in the machine room, and a cooling provided at the back of the storage room. A container, an electric component storage portion provided in a concave shape in a heat insulating wall at the rear of the cooler, and an electronic control board arranged in the electric component storage portion, the electric component storage portion being directly connected to the compressor. The compressor is installed on the side of the cooler and the electrical component storage part so as not to be placed in the upper part, with a heat insulating wall separated, and an evaporating dish for storing and evaporating defrost water of the cooler is placed in front.
It is arranged below the cooler, and the electric parts storage section and the evaporation tray are arranged.
A heat insulating wall for partitioning the
A rear cover that integrally covers the mouth and the rear opening of the machine room.
And at least the back cover and the electrical component.
The storage part and the heat insulation wall that divides the evaporating dish are pressed together by a seal member
Refrigerator characterized by being made .