JP4304785B2 - refrigerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refrigerator provided with a control board, and more particularly to noise reduction of the control board.
[0002]
[Prior art]
In recent years, in refrigerators, those that electronically control compressors and other electrical components have become mainstream because of their safety and ease of compatibility with multifunctional functions. As this kind of conventional refrigerator, there is one disclosed in JP-A-9-79727. Hereinafter, an example of the conventional refrigerator will be described with reference to the drawings.
[0003]
FIG. 6 is a sectional view of a conventional refrigerator. In FIG. 6, 1 is a refrigerator main body, 2 is a control board for electronically controlling electrical components such as an internal fan (not shown), and is installed inside the refrigerator main body 1. 3 is a compressor of the refrigeration cycle, 4 is a dryer of the same refrigeration cycle, and both the compressor 3 and the dryer 4 are housed in a machine room formed at the lower rear of the refrigerator body 1. It is arranged above.
[0004]
Here, when a switching regulator or the like is used for the control board, noise may be generated from the control board 2 and may cause malfunction or failure of other electrical products. Therefore, the noise generated by the control board 2 is less likely to affect external devices and is less likely to cause malfunctions and failures.
[0005]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, there is only one iron plate that blocks noise, and noise from the control board is not eliminated at all, and there is still a possibility of causing malfunction and failure by affecting other electrical products. It was.
[0006]
Further, when an inverter circuit is incorporated in the control board 2, there is a possibility that a larger noise may be generated, and there is a disadvantage that the above-described problem occurs unless a more effective noise is cut off.
[0007]
The present invention solves the above-described problems, and an object thereof is to reduce the influence of noise on other electrical products as much as possible.
[0008]
Further, since the dryer 4 is above the compressor 3 in the machine room, the dryer 4 is heated by the heat of the compressor 3, the refrigerant flow rate is reduced due to generation of flash gas, etc., and the refrigeration capacity of the refrigeration cycle is reduced. There was a drawback that the reliability of the refrigerator was lowered.
[0009]
Another object of the present invention is to provide a highly reliable refrigerator that prevents generation of flash gas due to heating of a dryer.
[0010]
[Means for Solving the Problems]
In order to solve this problem, the refrigerator of the present invention is provided with a control board in which a machine room and electronic control parts are arranged at the rear of the refrigerator body, and includes a control board cover that covers the control board and a machine room cover that covers the machine room integrally. It is provided.
[0011]
Thereby, generation | occurrence | production of the noise from a control board can be suppressed, and it can be set as the refrigerator with little influence with respect to an external electrical component.
[0012]
Further, a gap is provided between the control board cover and the machine room cover.
[0013]
Thereby, the temperature rise of a control board can be prevented and a highly reliable refrigerator can be provided.
[0014]
In addition, a cooling fan for cooling the compressor is provided between the compressor and the control board, and an intake port is provided at the control board cover facing portion of the machine room cover.
[0015]
Thereby, a control board can be cooled and a highly reliable refrigerator can be provided.
[0016]
Further, the machine room is covered with a machine room cover provided with an exhaust port for discharging the heat in the machine room between the compressor and the dryer.
[0017]
Thereby, generation | occurrence | production of the flash gas by the heating of a dryer can be prevented, and it can be set as a reliable refrigerator.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention provides a machine room in which a compressor or the like is arranged at the rear of the refrigerator main body and a control board in which electronic control components are arranged, and noise blocking that covers the control board in a substantially sealed state. A control board cover made of a material to be cut off and a machine room cover that integrally covers the machine room, and a cover that cuts off noise from the control board has a double structure. Generation of noise can be suppressed as much as possible.
[0019]
The invention according to claim 2 of the present invention is the machine according to claim 1, wherein a gap is provided between the control board cover and the machine room cover, and the temperature of the machine rises due to the exhaust heat of the compressor. Heat conduction from the chamber cover to the control board cover is prevented, and the temperature rise of the control board is suppressed.
[0020]
According to a third aspect of the present invention, in the invention according to the second aspect, a cooling fan for cooling the compressor is provided between the compressor and the control board, and the control board cover facing portion of the machine room cover is provided. The cooling fan is provided with an intake port, and external air is taken in from the intake port by the intake action of the cooling fan to cool the control board cover, thereby suppressing an increase in temperature of the control board.
[0021]
According to a fourth aspect of the present invention, in addition to the invention according to any one of the first to third aspects, the heat in the machine room is further transferred between the compressor and a dryer provided on the upper portion of the compressor. The machine room cover is covered with a machine room cover that faces the exhaust port to be discharged, and the exhaust heat of the compressor is exhausted from the exhaust port at the bottom of the dryer, thereby preventing the dryer from being heated.
[0022]
【Example】
Embodiments of a refrigerator according to the present invention will be described below with reference to the drawings. In addition, about the same structure as the past, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
[0023]
Example 1
1 is a cross-sectional view of a main part of a refrigerator according to a first embodiment of the present invention.
[0024]
In FIG. 1, 5 is a refrigerator main body. Reference numeral 6 denotes a machine room formed on the lower rear side of the refrigerator main body 5 in which a compressor 7 which is a component part of the refrigeration cycle is arranged. Reference numeral 8 denotes a control board on which electronic control parts for controlling electric parts of the refrigerator are arranged, and is embedded in a hole formed in a heat insulating wall above the lower part of the refrigerator body 5 and above the machine room 6. , It is provided close to the machine room 6 through a heat insulating wall.
[0025]
Reference numeral 9 denotes a control board cover configured by an iron plate that blocks noise , and covers the control board 8 from the back side of the refrigerator body 5 in a substantially sealed state. 10 is a machine room cover configured to block noise formed of an iron plate, covers the machine room 6 and the control board cover 9 from the back side of the refrigerator body 5, and is configured to block noise twice with respect to the control board 8. It has become.
[0026]
The operation of the refrigerator configured as described above will be described below.
[0027]
During the operation of the refrigerator, the compressor 7, the cooling fan (not shown), the damper (not shown), and the like in the refrigerator are controlled by the control board 8 in order to adjust the temperature in the refrigerator. At this time, some of the electrical components constituting the control board 8 generate noise, which affects other electrical products and induces malfunction or failure.
[0028]
However, the control board 8 including such electrical components is connected to the outside by a control board cover 9 that is formed of an iron plate that is effective in blocking noise and that is covered in a substantially sealed state, and a machine room cover 10 that blocks noise. It is severely blocked.
[0029]
As a result, noise leaking from the control board 8 to the outside is greatly reduced.
[0030]
Therefore, malfunction and failure of other electric products due to noise generated from the control board 8 can be prevented, and a highly reliable refrigerator can be obtained.
[0031]
In the present embodiment, the control board cover 9 and the machine room cover 10 are made of iron plates, but the same effect can be obtained as long as the material has an effect of blocking noise. In this embodiment, the control board 8 is disposed in the vicinity of the machine room 6, but the control board 8 communicates with the machine room 6 as long as it is not affected by the temperature in the machine room 6. It may be arranged in the part.
[0032]
(Example 2)
FIG. 2 is a cross-sectional view of a main part of the refrigerator according to the second embodiment of the present invention.
[0033]
In FIG. 2, reference numeral 11 denotes a gap formed between the control board cover 9 and the machine room cover 10.
[0034]
The operation of the refrigerator configured as described above will be described below.
[0035]
The compressor 7 rises in temperature due to frictional heat, motor heat loss, and the like due to long-time operation. As the temperature of the compressor 7 rises, the temperature inside the machine room 6 rises and the temperature of the machine room cover 10 rises due to heat transfer.
[0036]
At this time, since a predetermined gap 11 is not formed between the machine room cover 10 and the control board cover 9, the temperature rise of the machine room cover 10 is directly applied to the control board cover 9 by heat conduction. There is no transmission. Therefore, the ambient ambient temperature of the control board 8 can be prevented from being increased and temperature rise can be prevented, and a highly reliable refrigerator can be provided.
[0037]
In addition, as a dimension of the gap | interval 11, if it is the range of 2-10 mm especially, the inhibitory effect of the moderate temperature rise can be acquired, without inhibiting space efficiency.
[0038]
(Example 3)
FIG. 3 is a rear view of the refrigerator according to the third embodiment of the present invention. FIG. 4 is a sectional view of an essential part of the refrigerator according to the same embodiment.
[0039]
3 and 4, reference numeral 12 denotes a cooling fan for cooling the compressor 7 in the machine room 6. Reference numeral 13 denotes a machine room cover provided with a gap 11 between the control board cover 9 and an air inlet 14 provided at a portion facing the control board cover 9.
[0040]
The operation of the refrigerator configured as described above will be described below.
[0041]
During the operation of the refrigerator, the compressor 7 is cooled by the cooling fan 12 to prevent the temperature of the compressor 7 from rising. At this time, the cooling air sucked by the cooling fan 12 is sucked from the air inlet 14 of the machine room cover 13.
[0042]
As a result, the external cooling air flows through the surface of the control board cover 9 facing the air inlet 14, so that the control board cover 9 is cooled, and the control board 8 housed therein is also cooled, thereby suppressing the temperature rise. Will be.
[0043]
Therefore, a failure due to the temperature rise of the control board 8 can be prevented, and a highly reliable refrigerator can be provided.
[0044]
In the present embodiment, the intake port 14 is provided in the opposite portion of the control board cover 9, but it may be any position as long as the cooling air from the cooling fan 12 flows on the surface of the control board cover 9. It is not limited to.
[0045]
(Example 4)
FIG. 5 is a rear view of the refrigerator according to the fourth embodiment of the present invention. In FIG. 5, reference numeral 15 denotes a refrigeration cycle dryer fixed vertically upward from the compressor 7. Reference numeral 16 denotes a machine room cover, and an exhaust port 17 is provided vertically upward from the compressor 7 and vertically downward from the dryer 15.
[0046]
About the refrigerator comprised as mentioned above, the operation | movement is demonstrated below.
[0047]
During the operation of the refrigerator, the compressor 7 is cooled by the cooling fan 12 to prevent the temperature of the compressor 7 from rising. At this time, the cooling air that has cooled the compressor 7 is exhausted from an exhaust port 17 provided vertically upward from the compressor 7 and vertically downward from the dryer 15.
[0048]
For this reason, since the high-temperature cooling air that has cooled the compressor 7 is exhausted without passing through the dryer 15, heating of the dryer 15 is suppressed, and generation of flash gas and reduction in refrigerant density can be prevented.
[0049]
Therefore, it is possible to prevent the cooling capacity of the refrigerator from being lowered due to flash gas or the like, and to provide a highly reliable refrigerator.
[0050]
In the present embodiment, the exhaust port 17 is set vertically downward from the dryer 15, but there is no problem if the high-temperature cooling air that has cooled the compressor 7 does not pass through the dryer 15. Similar effects can be obtained.
[0051]
Further, in this embodiment, the specification with the cooling fan 12 has been described, but the same effect can be obtained when there is no cooling fan.
[0052]
【The invention's effect】
As described above, according to the first aspect of the present invention, the control board cover made of a material that blocks noise covering the control board in a substantially sealed state and the machine room cover that integrally covers the machine room are double-blocked. Since the configuration is provided, it is possible to prevent the noise generated by the control board from adversely affecting other electrical products.
[0053]
The invention according to claim 2 is the invention according to claim 1, wherein a gap is provided between the control board cover and the machine room cover, so that the heat of the compressor directly heats from the machine room cover to the control board cover. Since there is no conduction, the temperature rise of the control board can be prevented.
[0054]
Further, in the invention according to claim 3, since the intake port is provided in the portion of the invention according to claim 2 facing the control board cover of the machine room cover, the cooling air flows on the surface of the control board cover, Cooling of the control board can be promoted.
[0055]
According to a fourth aspect of the present invention, in addition to the invention according to any one of the first to third aspects, an exhaust port is provided in a portion corresponding to the lower portion of the dryer in the upper portion of the compressor of the machine room cover. Therefore, it is possible to prevent a decrease in the refrigerating capacity due to the generation of flash gas and the decrease in the refrigerant density, in which the high-temperature cooling air that has cooled the compressor is exhausted outside without passing through the dryer.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part of a first embodiment of a refrigerator according to the present invention. FIG. 2 is a cross-sectional view of a main portion of a second embodiment of the refrigerator according to the present invention. 4 is a cross-sectional view of the main part of the refrigerator according to the embodiment. FIG. 5 is a rear view of the refrigerator according to the embodiment 4 of the present invention. FIG. 6 is a cross-sectional view of a conventional refrigerator.
5 Refrigerator body 6 Machine room 7 Compressor 8 Control board 9 Control board cover 10 Machine room cover 11 Gap 12 Cooling fan 13 Machine room cover 14 Air inlet 15 Dryer 16 Machine room cover 17 Exhaust port

Claims (4)

In a machine room in which a compressor and the like are arranged at the rear of the refrigerator body and a control board in which electronic control components are arranged, a control board cover made of a noise blocking material that covers the control board in a substantially sealed state and the machine room A refrigerator comprising a structure that is double-blocked by a machine room cover that is integrally covered.   The refrigerator according to claim 1, wherein a gap is provided between the control board cover and the machine room cover.   The refrigerator according to claim 2, wherein a cooling fan for cooling the compressor is provided between the compressor and the control board, and an intake port of the cooling fan is provided at a control board cover facing portion of the machine room cover.   The machine room is covered with a machine room cover in which a dryer for a refrigeration cycle is provided above the compressor, and an exhaust port for discharging heat in the machine room is provided between the compressor and the dryer. The refrigerator according to any one of 3.

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