JP2022123225A - refrigerator - Google Patents

Abstract

To provide a refrigerator that has high energy saving performance by efficiently cooling a compressor by a fan.SOLUTION: A refrigerator according to the present disclosure comprises a machine room on the back side. A condenser, a fan serving as a main driving source of an air blowing circuit, and a compressor are housed in the machine room. The refrigerator comprises wind direction control means for leading wind from the fan to the vicinity of the compressor. Energy can be saved by efficiently cooling the compressor.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to refrigerators with compressors air-cooled by fans.

Patent Literature 1 discloses a refrigerator in which a heat exchanger made of finned pipes for forced ventilation is housed in a limited space area in a machine room to improve refrigerating capacity and reduce power consumption. This refrigerator has a heat exchanger consisting of a spirally wound pipe with thin fins in metallic contact and a compressor arranged in a machine room, and the heat exchanger consisting of a pipe with fins is placed in a compressor and a condenser. A cooling fan is connected between the compressors and forcedly cools the compressor and the heat exchanger consisting of finned pipes.

Japanese Unexamined Patent Application Publication No. 2001-255048

The present disclosure provides a refrigerator with high energy efficiency by efficiently cooling the compressor.

The refrigerator according to the present disclosure has a machine room on the back, a compressor in the machine room, and a fan that serves as the main drive source for the air blower circuit. It has control means.

The refrigerator according to the present disclosure has a wind direction control means that promotes the wind from the fan to the vicinity of the compressor in the machine room, thereby increasing the wind speed near the compressor, efficiently cooling the compressor, and saving energy. be able to.

A perspective view of the refrigerator according to Embodiment 1 Cross-sectional view of the same refrigerator Refrigeration cycle diagram of refrigerator Partial plan view showing the vicinity of the machine room on the top surface of the refrigerator Cross-sectional view of the refrigerator machine room of the refrigerator The same, the perspective view of the wind direction control means of the refrigerator

(Knowledge, etc. on which this disclosure is based)
At the time when the inventors came up with the present disclosure, a compressor, a condenser, and a fan for cooling the compressor and the condenser were provided in the machine room, and the compressor and the condenser were operated by driving the fan. There was a technology to force cooling and increase the heat dissipation capacity.

However, in the conventional technology, since a round compressor is installed in a substantially rectangular parallelepiped machine room, a space is generated between the upstream side of the compressor or the lower part of the compressor and the machine room wall surface. In addition, axial fans are often used for cooling the compressor and condenser due to their low cost and low noise. In the machine room, when a compressor is installed in front of the axial fan to form an air passage, the flow along the wall surface of the machine room increases. Therefore, when the wind speed in the vicinity of the compressor decreases, the amount of heat exchanged between the compressor and air decreases, and the condensing temperature rises. As a result, the inventors discovered the problem that the compression ratio of the refrigeration cycle increases, the cycle efficiency decreases, and the power consumption of the refrigerator increases. reached.

Accordingly, the present disclosure provides a refrigerator capable of efficiently cooling the compressor and achieving energy saving.

Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters or redundant descriptions of substantially the same configurations may be omitted. This is to avoid the following description from becoming more redundant than necessary and to facilitate understanding by those skilled in the art.

It should be noted that the accompanying drawings and the following description are provided to allow those skilled in the art to fully understand the present disclosure and are not intended to limit the claimed subject matter thereby.

(Embodiment 1)
Embodiment 1 will be described below with reference to FIGS. 1 to 6. FIG.

[1-1. Constitution]
FIG. 1 is a schematic diagram showing an outline of a refrigerator according to Embodiment 1 of the present disclosure. FIG. 2 is a cross-sectional view of the refrigerator of Embodiment 1. FIG.

As shown in FIGS. 1 and 2, the refrigerator 1 includes an outer case 111 made of metal (for example, an iron plate), an inner case 112 made of hard resin (for example, ABS), and a vacuum heat insulating material 115 attached to the outer case 111. and a foamed heat insulating material 117 (for example, hard urethane) filled between the outer box 111 and the inner box 112 .

Refrigerator 1 includes a plurality of storage compartments including refrigerating compartment 200 , switching compartment 201 , ice making compartment 202 , freezing compartment 203 and vegetable compartment 204 .

Refrigerating compartment door 101, switching compartment door 102, ice making compartment door 103, freezing compartment door 104, and vegetable compartment door 105 in FIG. A door to open and close.

The refrigerating compartment 200 is set to a refrigerating temperature range in which stored items do not freeze for refrigerating storage. The vegetable compartment 204 is set in a temperature range slightly higher than that of the refrigerator compartment 200 as a temperature suitable for storing vegetables. The freezer compartment 203 is set to a freezing temperature zone for frozen storage. The temperature zone of the switching chamber 201 can be switched to a desired temperature zone by the user from a plurality of temperature zones.

The refrigerator 1 also includes a first machine room 13 located in the upper part of the refrigerator 1 , a second machine room 207 located in the lower part of the refrigerator 1 , and a cooling room 208 located in the back of the refrigerator 1 . The cooling chamber 208 accommodates a cooler 209 that generates cool air, a defrosting heater (not shown) for removing frost adhering to the cooler 209, and the like.

The first machine room 13 accommodates a compressor 14, a condenser 15, and the like. The second machine room 207 houses a defrosting tray (not shown), a defrosting fan (not shown), and the like.

FIG. 3 is a refrigeration cycle diagram of the present invention. The refrigerator 1 incorporates a refrigeration cycle 300 shown in FIG. The refrigeration cycle 300 has a compressor 14, a condenser 15 arranged in the machine room, a condensation pipe 301 arranged in the refrigerator wall, a capillary tube 302, and a cooler 209, which are connected in a ring. there is

FIG. 4 is a schematic diagram showing an outline of the machine room of the refrigerator of Embodiment 1. FIG. 5 is a partial plan view showing the vicinity of the machine room of the top panel of the refrigerator according to Embodiment 1. FIG. FIG. 6 is a perspective view showing an outline of the wind direction control means of the refrigerator of Embodiment 1. FIG.

As shown in FIGS. 4 to 6, the refrigerator 1 has a box-shaped main body 10. As shown in FIGS. A substantially rectangular parallelepiped recess 11 is provided on the upper back surface of the main body 10 , and a machine room 13 is configured by a plate-like machine room cover 12 provided so as to cover the recess 11 .

In this embodiment, the machine room 13 is provided on the upper back surface of the main body 10 , but may be provided on the lower back surface of the main body 10 .

A compressor 14 and a condenser 15 constituting a refrigerating cycle are arranged inside the machine room 13 , and a fan 16 is provided between the compressor 14 and the condenser 15 . The machine room cover 12 is provided with a suction port 20 on the upstream side of the fan 16 and a discharge port 21 on the downstream side of the fan 16 . Then, by driving the fan 16, the outside air of the main body 10 is sucked in from the suction port 20, passes through the condenser 15, heat-exchanges with the compressor 14, and then heats the main body 10 again from the discharge port 21. is configured to be ejected to the outside of the

In this embodiment, the fan 16 is provided between the compressor 14 and the condenser 15 , but the fan 16 may be provided upstream of the condenser 15 of the compressor 14 . Alternatively, the compressor 14 may be arranged on the leeward side of the fan 16 without installing the condenser 15 in the machine room 13 .

A wind direction control means 30 is provided between the compressor 14 and the machine room cover 12 to direct the wind sent from the fan 16 toward the compressor 14 . The wind direction control means 30 includes a pressure contact portion 31 that is in pressure contact with or in contact with the compressor 14, and an extension portion 32 that extends in the direction of the fan 16 along the machine room cover 12 without being in pressure contact with the compressor 14. .

In the present embodiment, the wind direction control means 30 has a shape that can be easily held. 12 and an extension portion 32 extending in the direction of the fan 16 are configured as a single part.

Furthermore, the vibration of the compressor 14 can be suppressed by using EPDM or the like, which is generally used as a cushioning material, as the material of the wind direction control means 30 .

The compressor 14 is constructed by joining an upper shell 40 and a lower shell 41 as outer shells vertically, and the extending portion 32 extends downward from the vicinity of the joining portion of the upper shell 40 and the lower shell 41 .

[1-2. motion]
The operation and action of the refrigerator 1 configured as described above will be described below.

By operating the compressor 14, the compressor 14 is heated by heat generated by a built-in motor (not shown) and heat generated when the refrigerant is compressed.

By driving the fan 16 while the compressor 14 is in operation, air outside the main body 10 flows into the machine room 13 from the suction port 20 and passes through the condenser 15 and the fan 16 . The air that has passed through the fan 16 passes around the compressor 14 and exchanges heat with the compressor 14 . At this time, the wind flowing along the machine room cover is guided to the vicinity of the compressor 14 by the wind direction control means 30 . The air that has passed through the compressor 14 flows out of the main body 10 through the outlet 21 .

[1-3. effects, etc.]
As described above, in the present embodiment, the refrigerator 1 has the machine room 13 on the back side, and the machine room 13 is provided with the compressor 14 and the fan 16 serving as the main drive source of the blower circuit. 13 includes wind direction control means 30 for directing the wind from the fan 16 to the vicinity of the compressor 14 .

As a result, the wind radially sent out from the fan 16 in the direction of rotation flows in the vicinity of the compressor 14, thereby increasing the wind velocity in the vicinity of the compressor 14, enabling the compressor 14 to be efficiently cooled, thereby saving energy. be able to.

Further, in the present embodiment, the airflow direction control means 30 includes a pressure contact portion 31 that is in pressure contact with the compressor 14 and an extension portion 32 that is not in pressure contact with the compressor 14 and extends in the direction of the fan 16 along the machine room cover 12 . It has

As a result, the distance between the upstream side of the compressor 14 and the machine room cover 12 is shortened, and the cross-sectional area of the air passage is reduced. be.

In addition, the wind flowing along the machine room cover 12 separates from the machine room cover 12 along the extension 32 and is guided toward the compressor 14, further increasing the wind speed in the vicinity of the compressor 14. Since heat exchange between the compressor 14 and the air is promoted by the turbulent flow caused by the separation, the compressor 14 can be efficiently cooled and energy saving can be achieved.

In the present embodiment, the upstream end face of the extending portion 32 faces the fan 16 in order to simplify the configuration. By inclining in the direction, it is possible to suppress an increase in pressure loss due to a sudden reduction in the cross-sectional area of the air passage, and a greater energy-saving effect can be obtained.

In the present embodiment, the compressor 14 is configured by joining an upper shell 40 and a lower shell 41 as outer shells vertically, and the extending portion 32 extends downward from the vicinity of the joint between the upper shell 40 and the lower shell 41. extends to

As a result, the distance between the lower part of the compressor 14 and the machine room cover 12 is shortened, and the cross-sectional area of the air passage is reduced, thereby increasing the wind speed in the vicinity of the compressor 14 and promoting heat exchange between the compressor 14 and the air. .

In addition, the wind flowing along the machine room cover 12 separates from the machine room cover 12 along the extension 32 and is guided toward the compressor 14, further increasing the wind speed in the vicinity of the compressor 14. Since heat exchange between the compressor 14 and the air is promoted by the turbulent flow caused by the separation, the compressor 14 can be efficiently cooled and energy saving can be achieved.

Note that the above-described embodiment is for illustrating the technology in the present disclosure, and various changes, replacements, additions, omissions, etc. can be made within the scope of the claims or equivalents thereof.

INDUSTRIAL APPLICABILITY The present disclosure is applicable to refrigerators capable of efficiently cooling a compressor and achieving energy saving.

1 Refrigerator 10 Main Body 11 Recess 12 Machine Room Cover 13 Machine Room 14 Compressor 15 Condenser 16 Fan 20 Suction Port 21 Discharge Port 30 Wind Direction Control Means 31 Pressure Contact Part 32 Extension Part 40 Upper Shell 41 Lower Shell 101 Cold Room Door 102 Switch Chamber door 103 Ice making compartment door 104 Freezing compartment door 105 Vegetable compartment door 111 Outer box 112 Inner box 115 Vacuum insulation material 117 Foam insulation material 200 Refrigerating compartment 201 Switching compartment 202 Ice making compartment 203 Freezing compartment 204 Vegetable compartment 207 Second machine compartment 208 Cooling chamber 209 Cooler 300 Refrigerating cycle 301 Condensing pipe 302 Capillary tube

Claims (3)

A refrigerator has a machine room on the back side, and a compressor and a fan serving as a main driving source of an air blowing circuit are provided in the machine room, and the wind direction in the machine room is such that the air from the fan is urged toward the vicinity of the compressor. A refrigerator, characterized in that it has control means. The wind direction control means is characterized by comprising: a pressure contact portion that is in pressure contact with or in contact with the compressor; and an extension portion that extends in the direction of the fan along the machine room cover without being in pressure contact with the compressor. Refrigerator according to claim 1. The compressor is constructed by joining an upper shell and a lower shell as outer shells vertically, and the extending portion extends downward from the vicinity of the joining portion between the upper shell and the lower shell. The refrigerator according to claim 1 or 2.

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