JP2002090030A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in the conventional art that a bundle of wires electrically connecting circuits and components is considerably long, assembling work is very inefficient, and takes much time and effort, further insulation of the heat-insulating material filled in the gap between the outer box and the inner one becomes degraded, creeping of foamed heat-insulator is not sufficient depending on the state of routed wire-bundles, resulting in defective foaming such as voids (gas voids), etc. SOLUTION: In the refrigerator, a compressor 20 is provided in the lower part, coolers 21, 25 are provided through heat-insulating layers 2a, 2c, and 2b in the vicinity of the compressor 20. Fans 22, 26 are provided on the periphery of the cooler 21, 25. Circuit-storing parts 58a, 58b are provided through the insulating layers 2a, 2c, and 2b in the vicinity of the upper part of the fans 22, 26. The circuit 58 in the circuit-storing parts 58a, 58b, and each of the electric components are respectively electrically connected with wires.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a circuit storage section on the back.

[0002]

FIG. 9 is a side sectional view showing an example of a conventional refrigerator. The refrigerator 1 has an inner box 2b disposed inside an outer box 2a covering the outer surface, and a gap between the outer box 2a and the inner box 2b is filled with a heat insulating material 2c such as urethane foam. The interior of the refrigerator 1 is divided into a refrigerator compartment 11, a vegetable compartment 12, and a freezer compartment 13 in this order from above.

[0003] The vegetable compartment 12 and the freezer compartment 13 are partitioned by a partition frame 17 and a partition plate 19 made of a heat insulating material. The freezer compartment 13 is further partitioned into an upper portion and a lower portion by a partition frame 18 made of a heat insulating material. The refrigerator compartment 11 and the vegetable compartment 12 are partitioned by a partition frame 16 made of a heat insulating material and partition plates 31 and 32 made of a resin molded product. The partition plate 32 is provided with a through hole 32a.

[0004] In the lower part of the refrigerator compartment 11, there is provided an ice temperature compartment 14 which is an isolation compartment partitioned by a partition plate 46. The refrigerator compartment 11 is provided with a plurality of shelves 45 on which foods and the like are placed. The front surface of the refrigerator compartment 11 can be opened and closed by a rotary heat-insulating door 3. The front of the vegetable compartment 12, the upper part of the freezer compartment 13 and the lower part of the freezer compartment 13 can be opened and closed by sliding heat insulating doors 4, 5, 6, respectively.
5, 56 can be drawn out.

[0005] A compressor 20 is arranged at the rear of the freezing compartment 13. A condenser (not shown) is connected to the compressor 20 via a discharge pipe 20a, and a cooler 21 is connected to the compressor 20 via a suction pipe 20b. And compressor, condenser,
First capillary tube (not shown), coolers 25, 2
1 constitutes a refrigeration cycle, and when the refrigeration cycle operation is performed, the coolers 21 and 25 are cooled.

A switching valve (not shown) is provided between the condenser and the first capillary tube, and coolers 21 and 25 are provided.
A second capillary tube (not shown) is provided for connecting the first valve and the switching valve. As a result, only the cooler 21 can be cooled by switching the switching valve. Defrost heaters 61 and 62 for defrosting the coolers 21 and 25 are provided below the coolers 21 and 25. 6
Reference numerals 3 and 64 denote drain receiving members.

The cooler 21 is disposed in a cool air passage 23, and the cool air passage 23 is formed by the inner box 2b and an evaporative cover 33 made of a resin molded product. A blower 22 is disposed above the cooler 21 in the cool air passage 23. The cool air passage 23 communicates with the freezer compartment 13 through a discharge port 13a and a return port 13b provided on the back plate 33a of the freezer compartment 13.

[0008] The cooler 25 is arranged in the cool air passage 27. The lower portion of the cool air passage 27 is formed by the back plate 34 and the inner box 2b of the vegetable compartment 12 made of a heat insulating material.
Communicates with the vegetable room 12. Above the cooler 25 in the cool air passage 27, a blower 26 for sending out the cool air generated by the cooler 25 is arranged.

The upper portion of the cool air passage 27 is formed by a heat insulating material 36 fixed to the back plate 35 of the ice temperature chamber 14 and the inner box 2b. An opening 36 a is provided in the heat insulating material 36, and the ice temperature chamber 14 communicates with the cold air passage 27 through the opening 36 a.

A blower 29 is provided at the upper end of the cool air passage 27. The blower 29 has a plurality of openings 41a on the front surface, and a blower cover 41 facing the refrigerator compartment 11 is attached. Above the blower 29, a cool air passage 28 is provided. The cold air passage 28 forms an inner wall of the refrigerator compartment 11 and is formed by a member 42 made of metal such as aluminum and the inner box 2b.

A ceiling cool air passage 57 communicating with the cool air passage 28 is provided at a ceiling portion of the refrigerator compartment 11.
Reference numeral 7 is formed by an upper plate 43 made of a resin molded product and the inner box 2b. The discharge port 4 is provided in the member 42 and the upper plate 43.
2a and 43a (43a is not shown) are provided. A transparent lighting cover 53 is provided at the center of the ceiling of the refrigerator compartment 11.
An illumination lamp 51 covered with is provided.

In the refrigerator 1 having the above structure, the compressor 20
Is driven, a refrigeration cycle is executed. Blower 22
Is driven, the air in the freezing compartment 13 is sucked into the cool air passage 23 from the return port 13b. The air is cooled by exchanging heat with the cooler 21 and discharged to the freezing compartment 13 from the discharge port 13a. Thereby, the inside of the freezing room 13 is cooled to, for example, −20 ° C.

When the blowers 26 and 29 are driven, the air in the vegetable compartment 12 is sucked into the cool air passage 27 from the return port 12b. The air is cooled by exchanging heat with the cooler 25 and mixed with the air in the refrigerator compartment 11 guided to the cool air passage 28 from the opening 41a. After that, the air flows through the cool air passage 28 and is discharged from the discharge ports 42a and 43a into the refrigerator compartment 11.

Since the member 42 is made of metal, a part of the cool heat of the cool air flowing through the cool air passage 28 is discharged into the refrigerator compartment 11 through the member 42 as cool heat. Thereby, the inside of the refrigerator compartment 11 is efficiently and uniformly cooled to, for example, 3 ° C. by the cool heat from the member 42 and the cool air discharged from the discharge ports 42 a and 43 a.

The cold air in the refrigerator compartment 11 is supplied between the shelves 45 and between the shelves 45.
, Flows through the cold air passage 30 from below the ice temperature chamber 14 through the opening 32 a, and is discharged forward in the vegetable room 12. Then, the inside of the vegetable compartment 12 is cooled down from the front of the storage container 54, and is guided to the lower part of the cooler 25 from the return port 12b to circulate cool air. The cool air discharged from the discharge ports 42a and 43a into the refrigerator compartment 11 is deprived of cold heat by the food and the heat insulating material 2c before flowing into the vegetable compartment 12. Thereby, the inside of the vegetable compartment 12 is cooled to, for example, 5 ° C.

A part of the cool air cooled by the cooler 25 and flowing through the cool air passage 27 flows into the ice warming chamber 14 through the opening 36a. Thereby, the inside of the ice temperature chamber 14 can be cooled to a lower temperature, and can be maintained at, for example, -1 ° C.

An electric circuit 58 for driving and controlling the electrical components such as the compressor 20, the blowers 23, 26, and 29 is installed in the storage box 58a above the rear of the refrigerator compartment 11. The storage box 58a is closed by the electrical cover 58b from the rear side of the refrigerator 1 body.

A machine room cover 20c is provided at the rear of the compressor 20 to cover a machine room in a space for accommodating the compressor 20 and the like from the rear side of the refrigerator 1 main body.
And a heat generating part such as a condenser (not shown). And
A condenser blower (not shown) is provided for cooling the heat-generating section, and air sucked from the outside at the lower front of the refrigerator 1 main body hits a heat-generating section such as the compressor 20 or a condenser (not shown). And is discharged from the slit-shaped opening 20d of the machine room cover 20c to the rear of the refrigerator 1 main body to cool the heat generating portion.

A control circuit is provided in the electric circuit 58, and the compressor 20, the switching valve (not shown), the blowers 22, 26 and 29, the blower for the condenser (not shown), the illumination light 51, Electrical components such as defrost heaters 61 and 62, temperature sensors for refrigerators and freezers (not shown), and the electrical circuit 58
Are electrically connected by respective wirings (for example: lead wires (not shown)).
It is controlled in accordance with the conditions of the refrigeration compartment 13 and the like. Then, each of the wirings is taped to a part of the gap between the outer box 2a and the inner box 2b mainly on the inner box 2b side, and then the gap is filled with a heat insulating material 2c such as urethane foam, Each of the wirings is fixed.

A power supply cord (not shown) for connection to an external power supply is connected to the electric circuit 58, and a power supply cord outlet of a circuit storage portion composed of the storage box 58a and the electrical cover 58b. (Not shown) to the outside of the circuit housing portion.

The electric circuit (control unit) in the circuit storage unit
The refrigerator provided above the rear part of the main body of the refrigerator is also disclosed in FIG. 4 of JP-A-11-31473. Also, in FIG. 10 of Japanese Patent Application Laid-Open No. 2000-18800, an opening (discharge port) is provided in a machine room cover (back plate) of a machine room below the back of the refrigerator main body,
There is disclosed a refrigerator in which hot air that has cooled the components in the machine room is discharged outside the rear part of the refrigerator body.

[0022]

In the refrigerator as described above, in FIG. 9, an electric circuit 58 including a control circuit above the refrigerator 1 and a compressor 20 below the refrigerator 1, which is an electric component, are switched. A valve (not shown), a blower for a condenser (not shown), a defrost heater 62, a blower 22, a temperature sensor for a freezer compartment (not shown), and the like have a very distant positional relationship, and the electric circuit 58 and the respective A thick bundle of wires (for example: lead wires) for electrically connecting the electrical components passes through many areas from the top to the bottom between the outer box 2a and the inner box 2b at the rear of the refrigerator 1, and The length is considerably long, and the assembling workability is very poor, which is not only troublesome, but also causes a decrease in the heat insulating property of the heat insulating material 2c filled in the gap between the outer box 2a and the inner box 2b. Moreover, the heat insulating material 2c
When is a foamed heat insulating material such as urethane, there is a problem that depending on the routing state of the wiring bundle, the foamed heat insulating material turns poorly and the possibility of occurrence of foaming defects such as voids (gas spaces) increases. is there.

The compressor 20 and the blowers 22, 26, 2
When the rotational speed of a rotating device such as a blower 9 or a condenser blower (not shown) is controlled by frequency conversion or the like, the electric circuit 58
The amount of heat generated from the storage box 58
a, despite the fact that the temperature in the circuit housing section constituted by the electrical cover 58b rises considerably,
Warmed by heat generated from a machine room in a space for housing a condenser and a condenser (not shown) rises on the rear surface of the refrigerator 1 body and covers the surface of the electrical cover 58b. There is a problem that it is necessary to use an electric component or a circuit board of the electric circuit 58 having a higher permissible limit temperature to exert a bad influence and to guarantee the temperature.

Furthermore, the length of the power cord drawn out of the circuit housing from a power cord outlet (not shown) of the circuit housing is designed for when the external power supply is located below the floor surface. It has a considerable length with room,
When the external power supply is provided above the floor for a refrigerator, there is a problem that the slack portion of the power supply cord increases and the power supply is extremely wasteful.

The refrigerators disclosed in JP-A-11-31473 and JP-A-2000-18800 have the same problems as described above.

[0026]

SUMMARY OF THE INVENTION The refrigerator of the present invention has solved the above-mentioned problems. The refrigerator of the present invention is provided with a compressor below, and cooled near the compressor through an insulating layer. A fan is provided around the cooler, and a circuit housing portion is provided near an upper portion of the blower via a heat insulating layer, and an electric circuit in the circuit housing portion and each of the electric components are electrically connected by wiring. Is connected.

In the refrigerator of the present invention, a compressor is provided below, a first cooler is provided near the compressor via an insulating layer, and a first blower is provided around the cooler. A circuit storage section is provided near the upper part of one blower via a heat insulating layer,
A second cooler is provided above the circuit storage unit via a heat insulating layer, a second blower is provided above the second cooler, and an electric circuit in the circuit storage unit and each of the electrical components are wired. It is characterized by being electrically connected.

In the refrigerator of the present invention, a compressor is provided below, a first cooler is provided near the compressor via an insulating layer, and a first blower is provided around the cooler. Providing a circuit storage portion near an upper portion of the blower through a heat insulating layer, providing a second cooler through the heat insulating layer above the circuit storage portion, providing a second blower above the second cooler, The compressor, the first cooler, provided an independent first storage room in front of the first blower, the circuit storage unit, the second cooler, a storage room different from the first storage room in front of the second blower. One or a plurality of cooling air passages are provided between the circuit storage portion and the second cooler from at least a part of the different storage room to the second cooler through the circuit storage portion and the heat insulating layer. Electrically connecting the electric circuit in the circuit storage section with each of the electric components by wiring. It is characterized in that the.

Further, in the refrigerator of the present invention, a compressor is provided below, a first cooler is provided near the compressor via an insulating layer, and a first blower is provided around the cooler. A circuit housing portion is provided near an upper portion of the first blower through a heat insulating layer, a second cooler is provided above the circuit housing portion through a heat insulating layer, and a second blower is provided above the second cooler. ,
The compressor, the first cooler, provided an independent first storage room in front of the first blower, the circuit storage unit, the second cooler, a storage room different from the first storage room in front of the second blower. One or more provided, between the circuit storage section and the second cooler, a cold air passage leading to the second cooler is provided above the circuit storage section via a heat insulating layer, and the cold air passage is provided below the cold air passage. A return port communicating with a different storage room is provided, and an electric circuit in the circuit storage unit and each of the electric components are electrically connected by wiring.

Further, the refrigerator according to the present invention is characterized in that the inside of the heat insulating layer around the circuit accommodating portion or the upper portion on the side of the cool air passage or on the side of the return port becomes higher as going backward. .

Further, the refrigerator according to the present invention is characterized in that the lower side of the heat insulating layer near the circuit housing portion on the side of the lower blower has a surface which becomes lower toward the rear.

Further, the refrigerator according to the present invention is characterized in that at least a part of the upper wall surface of the circuit storage portion has a surface which becomes higher as it goes backward.

The refrigerator according to the present invention is characterized in that an opening is provided above the circuit housing.

[0034] Further, the refrigerator of the present invention is characterized in that at least a part of the lower wall surface of the circuit storage portion has a surface that becomes lower toward the rear.

Further, the refrigerator according to the present invention is characterized in that an opening is provided below the circuit housing portion.

Still further, in the refrigerator according to the present invention, the first storage room is a freezing room, and a storage room different from the first storage room is provided with a partition in contact with the inside of the cold air passage or above the return port. A communication path communicating the upper and lower parts of the partition is provided in front of the partition, a refrigerator room is provided above the partition, a vegetable room is provided below the partition, and the circuit storage unit is provided behind the vegetable room. It is characterized by the following.

Further, the refrigerator of the present invention is characterized in that a wiring outlet is provided below a lower wall surface or a side wall surface of the circuit storage portion.

The refrigerator according to the present invention is characterized in that the power cord outlet provided in the circuit storage portion is provided at the center in the vertical direction.

Further, in the refrigerator of the present invention, the rear of the machine room provided with the compressor is covered with a machine room cover, an opening is provided in the machine room cover, and the inside of the machine room is cooled from the opening. It is characterized in that at least a part of the surrounding air is sucked.

Further, the refrigerator according to the present invention is characterized in that at least a part of the opening is provided around the compressor.

Still further, the refrigerator of the present invention is characterized in that an opening is provided in the circuit housing portion and is connected to an opening provided in the machine room cover or a low pressure portion of the machine room by a communication passage. is there.

[0042]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a refrigerator according to the present invention will be described with reference to the drawings.

FIG. 1 is a side sectional view showing a refrigerator of the present invention.
FIG. 2 is a front view of the refrigerator of FIG. 1, FIG. 3 is a view showing a refrigerating cycle of the refrigerator of the present invention, FIG. 4 is an enlarged view showing members of the refrigerator of the present invention, and FIG. FIG. 6 is a diagram of a wiring state from the vicinity of the vegetable room 12 to the lower side, FIG. 7 is a diagram of a communication passage leading from the circuit storage unit to the machine room, and FIG. 8 is a diagram of the machine room and its surroundings seen from above. It is.

For convenience of description, the same parts as those in FIG. 9 of the conventional example are denoted by the same reference numerals.

In FIGS. 1 and 2, the refrigerator 1 has an inner box 2b disposed inside an outer box 2a covering the outer surface, and a gap between the outer box 2a and the inner box 2b is filled with a heat insulating material 2c such as urethane foam. Have been. The interior of the refrigerator 1 is divided into a refrigerator compartment 11, a vegetable compartment 12, and a freezer compartment 13 in this order from above.

The vegetable compartment 12 and the freezing compartment 13 are separated by a partition frame 17 and a partition plate 19 made of a heat insulating material. The freezing compartment 13 is further divided into an upper portion and a lower portion by a partition frame 18 made of a heat insulating material. The refrigerator compartment 11 and the vegetable compartment 12 are partitioned by a partition frame 16 made of a heat insulating material and partition plates 31 and 32 made of a resin molded product.

At the lower part of the refrigerator compartment 11, there is provided an ice temperature compartment 14, which is an isolation compartment partitioned by a partition plate 46. The refrigerator compartment 11 is provided with a plurality of shelves 45 on which foods and the like are placed. The front surface of the refrigerator compartment 11 can be opened and closed by a rotary heat-insulating door 3. The front of the vegetable compartment 12, the upper part of the freezer compartment 13 and the lower part of the freezer compartment 13 can be opened and closed by sliding heat insulating doors 4, 5, 6, respectively.
5, 56 can be drawn out.

At the rear of the freezer compartment 13, a compressor 20 is disposed via a heat insulating layer.
The refrigeration cycle is configured by being connected to the coolers 21 and 25 disposed in the inside 7.

FIG. 3 shows a circuit diagram of an example of the refrigeration cycle. A condenser 71 is connected to the compressor 20, and the refrigerant passes through the capillary tubes 72 and 73 and the cooler 25 as indicated by an arrow A1. A first refrigeration cycle returning to the compressor 20 is configured. Further, a second refrigeration cycle in which the refrigerant returns to the compressor 20 through the capillary tubes 72 and 74 and the cooler 21 as indicated by an arrow A2 is configured.

The first refrigeration cycle and the second refrigeration cycle are configured in parallel, and when the on-off valve 78 is opened, the first refrigeration cycle and the second refrigeration cycle are simultaneously executed. Therefore, cooling by the coolers 21 and 25 is performed, and the blower 2
The drive of 2 and 26 sends out cold air to the freezer compartment 13 and the refrigerator compartment 11.

When the on-off valve 78 is closed, the second refrigeration cycle is executed, cooling is performed by the cooler 21, and only the freezing compartment 13 is cooled by driving the blower 26. A dedicated cooler 2 for each of the refrigerator compartment 11 and the freezer compartment 13
Because of the provision of 5, 21, the cooling temperature of the cool air passing through the cooler 25 is set high, so that dew condensation and icing in the cooler 25, the member 42 and the refrigerator compartment 11 can be suppressed. When the temperatures in the refrigerator compartment 11 and the vegetable compartment 12 are within a predetermined range, the compressor 20 is used only for cooling the freezer compartment 13 so that the refrigerating capacity of the freezer compartment 13 can be further increased. .

Further, since the coolers 21 and 25 are arranged in parallel, it is possible to simplify the connection of the piping through which the refrigerant flows. That is, many of the welding locations can be provided in the machine room in which the compressor 20 is disposed, so that productivity and maintainability are improved. Reference numerals 75 and 76 denote temperature sensors for detecting the temperatures in the refrigerating compartment and the freezing compartment. The detection of the temperature sensors 75 and 76 drives the compressor 20 and opens and closes the on-off valve 78. Reference numeral 77 denotes a condenser blower that cools at least a part of the condenser 71.

Also, in FIGS. 1 and 2, the cooler 21,
Defrosters 61 and 62 for defrosting the coolers 21 and 25 are provided below the cooler 25. 63 and 64 are drain receiving members. The cooler 21 is disposed in the cool air passage 23, and the cool air passage 23 is formed by the inner box 2b and the evaporative cover 33 made of a resin molded product. The blower 22 is disposed above the cooler 21 in the cool air passage 23. The cool air passage 23 is formed by the discharge ports 13a and 13c and the return port 13b provided on the back plate 33a of the freezer compartment 13 so that
Is in communication with In addition, the evaporator cover 33 and the back plate 33a
The space defined by the discharge ports 13a and 13c and the space defined by the return port 13b are separated from the back plate 33a by the evaporator cover 3
The projection wall protruding to the third side reaches the evaporator cover 33,
They are separated from each other by the projection walls.

The cooler 25 is arranged in the cool air passage 27, and the blower 26 is arranged above the cooler 25. The lower part of the cold air passage 27 is formed by the back plate 35 of the ice temperature chamber 14 and the inner box 2b. The upper portion of the cold air passage 27 is provided with the member 42 forming the back wall of the refrigerator compartment 11 and the inner box 2 b or the partition wall 27.
a and the inner box 2b. The partition wall 27a separates the cooler 25 from the pressure chamber 27b, and the blower 26 is attached to the partition wall 27a. The member 42 is formed by sheet metal working of a metal plate such as aluminum or stainless steel as shown in FIG.

A ceiling cool air passage 57 communicating with the cool air passage 27 is provided at a ceiling portion of the refrigerator compartment 11.
Reference numeral 7 is formed by an upper plate 43 made of a resin molded product and the inner box 2b. The discharge port 4 is provided in the member 42 and the upper plate 43.
2a and 43a are provided. The same illuminating lamp (reference numeral 51 in FIG. 9) as the conventional example is covered at the center of the ceiling of the refrigerator compartment 11 with a transparent lighting cover (reference numeral 53 in FIG. 9).
Is provided to illuminate the inside of the refrigerator compartment 11.

A water supply pump 66 for supplying water to the ice maker 67 is disposed on the left side of the cool air passage 27, and a water supply tank (not shown) is set in front of the water supply pump 66. An ice temperature duct 60 that branches from the discharge side of the blower 26 and guides cool air to the back of the ice temperature chamber 14 is provided on the right side of the cool air passage 27. Also, behind the vegetable room 12,
An electric circuit 58 for driving and controlling the compressor 20, the blowers 23 and 26 and the like is provided via a heat insulating layer such as the heat insulating material 2c.

In the refrigerator 1 having the above configuration, the compressor 20
Is cooled by the cooler 21 by the driving of the blower 2.
2 is driven, the air in the freezing room 13 returns to the return port 13b.
From the cooling air passage 23. The air is cooled by exchanging heat with the cooler 21 and discharged to the freezing compartment 13 through the discharge ports 13a and 13c. Thereby, the inside of the freezing room 13 is cooled to, for example, −20 ° C.

When the blower 26 is driven, the air in the vegetable compartment 12 is sucked into the cool air passage 27 from the return port 12b.
The air is cooled by exchanging heat with the cooler 25, and is cooled by the cool air passage 2.
7 and is discharged into the refrigerator compartment 11 through the discharge ports 42a and 43a.

Since the member 42 is made of metal, a part of the cool heat of the cool air flowing through the cool air passage 27 is released into the refrigerator compartment 11 through the member 42 as the cool heat. Thus, the inside of the refrigerator compartment 11 is efficiently and uniformly cooled to, for example, 3 ° C. by the cool heat discharged from the member 42 and the cool air discharged from the discharge ports 42 a and 43 a. The member 42 may be a material having high thermal conductivity, and may be a ceramic material, a resin material impregnated with a metal filler, or the like.

The cold air in the refrigerator compartment 11 is supplied between the shelves 45 and between the shelves 45.
Is discharged to the front inside the vegetable compartment 12 through the communication passage 12a. Then, the inside of the vegetable compartment 12 is cooled down from the front of the storage container 54, and the cool air is circulated from the return port 12b to the cool air passage 27. Discharge ports 42a, 43
The cold air discharged from a into the refrigerator compartment 11 is deprived of cold heat by the food and the like before flowing into the vegetable compartment 12. Thereby, the temperature of the cold air circulating in the refrigerator compartment 11 rises, and the raised cold air flows into the vegetable compartment 12, so that the vegetable compartment 12
The inside is cooled to, for example, 5 ° C.

Further, the cool air sent from the blower 26 is immediately discharged from the discharge port 60 a through the ice temperature duct 60 to the ice temperature chamber 1.
4 is discharged in an appropriate amount. Thereby, the temperature in the ice greenhouse 14 can be maintained at, for example, -1 ° C. The temperature of the ice greenhouse 14 is reduced to 0 ° C. by reducing the amount of cold air discharged inside.
When it is near, it becomes a chilled room, and when the amount of cold air is further reduced and the room temperature is around 5 ° C., it becomes a vegetable room. The amount of cool air can be changed by opening and closing a door pivotally supported so as to cover the discharge port 60a.

According to the present embodiment, a part of the cold heat of the cool air passing through the cool air passage 27 is transmitted by the member 42 and discharged from the entire surface of the member 42 into the refrigerator compartment 11. Therefore, the refrigerator compartment 11
Since the substantially entire width of the rear surface of the refrigerator 11 is covered by the member 42, the cool air can be uniformly discharged from the rear surface of the refrigerator 11 and the interior of the refrigerator 11 can be uniformly cooled. Since the cooler 25 is arranged above the refrigerator compartment 11 facing the refrigerator compartment 11 in which the member 42 is arranged, and is not arranged facing the vegetable compartment 12 as in the conventional example, The path to the discharge ports 42a, 43a, the cooler 25 and the member 42
And the distance between them is reduced.

Thus, the discharge side of the blower in the cool air passage 27 is shortened, and the ventilation efficiency is improved. Also, the cold air passage 27
Since the entire length of the airbag is shortened, the ventilation efficiency is further improved.
Then, since the cool air can reduce the heat absorption in the course of the passage through the cool air passage 27 and discharge the cool air to the refrigerator compartment 11 or discharge the cool heat from above, the cooling efficiency by the cooler 25 can be improved. . In addition, the refrigerator compartment 11 can be cooled more uniformly. Further, it is not necessary to provide a thick heat insulating material 34 (see FIG. 9) on the front surface of the cooler 25 as in the conventional example, and the efficiency of using the space in the refrigerator 1 can be improved.

The same effect can be obtained by disposing one or both of the cooler 25 and the member 42 on the ceiling surface 11a or the side wall 11b of the refrigerator compartment 11. When the thickness of the member 42 is large, the cold storage capacity is increased, and the strength is also increased.
When the thickness is small, the efficiency of discharging cold heat is improved, which is advantageous for weight reduction. Therefore, a thin plate or a thick plate may be selected and provided at an appropriate time in accordance with the purpose.

The member 42 may be a regenerative member in which a jelly-like or liquid cold insulator 42c as shown in FIG. 5 is enclosed by packaging materials 42f and 42g such as metal. This way,
The member 42 is further stored cold by the cool heat of the cool air flowing through the cool air passage 27, and discharges as cool heat according to the temperature distribution in the refrigerator compartment 11. Therefore, the refrigerator compartment 11 is uniformly cooled. Further, the cool storage member absorbs heat and dissipates heat during the stop of the compressor 20 and fluctuations in the temperature of the cool air in the cool air passage 27, so that the cool air temperature in the cool air passage 27 can be kept constant. Then, the temperature in the refrigerator compartment 11 can be stably and uniformly maintained at a constant temperature.

The cool air flowing through the cool air passage 27 is supplied to the cooler 2
5, and the member 42 and the cooler 25 are spaced apart from each other. Thereby, the cooler 2
Even if the temperature of the member 5 becomes extremely low (for example, −15 ° C.), the member 42 does not become supercooled, and dew condensation, icing, and frosting can be prevented. As a result, it is possible to obtain a refrigerator that is suitable for storing storage products (vegetables and raw foods) that are prevented from drying in the cold air and are easy to dry.

Further, by separating the member 42 and the cooler 25, the cooler 25 is fixed to the inner box 2b, and then the cooler 25 is connected to the compressor 20 by piping, and then the member 42 is installed. Good. Therefore, assembling becomes easier than installing the member 42 integrated with the cooler 25 as in the related art. Since the width of the member 42 is larger than the width of the cooler 25 and the width of the partition 27a, the welded portion and the partition 2
7a and the like can be covered by the member 42, and there is no need to separately provide a member for hiding. In addition, since the cold heat from the cooler 25 can be widely and indirectly discharged into the refrigerator compartment 11, a refrigerator having a uniform cooling efficiency and free from icing or dew condensation can be obtained.

When the width of the cool air passage 27 is increased, the cross-sectional area of the cool air passage 27 increases, and the circulation speed of the cool air decreases. In the present embodiment, the width of the cool air passage 27 is larger than の of the width of the member 42, and the width of the cooler 25 is further increased. For this reason, even if the blowers having the same air volume are used, the circulation speed of the cool air is reduced and the ventilation resistance is reduced. As a result, the heat exchange efficiency between the cooler 25 and the cool air and the blowing efficiency of the blower 26 can be improved. Therefore, the cooling efficiency of the cooler 25 can be improved.
Further, the power consumption of the blower 26 can be reduced, and the noise due to the blower can be reduced.

Further, from the rear surface of the refrigerator compartment 11, cold heat is released by the member 42 and cool air is discharged through the discharge port 42a, and from the front of the refrigerator compartment 11 through the ceiling cool air passage 57 and the discharge port 43a. The cool air is discharged through the refrigeration chamber, so that the entire refrigerator compartment 11 can be uniformly cooled. In addition, since the blower 26 is located above the cooler 25, the ceiling cool air passage 5
7, the cool air can be efficiently sent to the discharge port 43 a disposed in the back of the cool air passage 57 (front side of the refrigerator compartment). In addition, if the discharge port 43a is provided in many parts of the whole surface of the upper surface plate 43, and the shelf 45 is provided with a small opening vertically through which cool air passes, the refrigerator compartment 11 will be cooled more uniformly.

Further, the member 42 is not provided with the discharge port 42a,
When the discharge port 43a of the upper surface plate 43 is formed in front of the refrigerator compartment 11, the discharged cool air flows down the front of the refrigerator compartment 11 and becomes an air curtain when the opening / closing door 3 is opened, thereby suppressing the entry of outside air. Temperature rise in the refrigerator can be suppressed.

The return port 12b is connected to the discharge ports 42a, 43
Since it is arranged at a position distant from “a”, it is possible to prevent a short circuit in which the discharged cool air flows into the return port 12b without circulating in the refrigerator compartment 11, thereby improving the cooling efficiency. In addition, the entire surface of the member 42 can be used as cold heat release, thereby enabling uniform cooling of the room, and can be used as a reflector for illuminating light for illuminating the refrigerated room from above, thereby uniformly illuminating the room. be able to.

Further, by installing the electric circuit 58 behind the vegetable compartment 12 having a higher temperature in the refrigerator than the refrigerator compartment 11 and the freezer compartment 13, the thickness of the heat insulating material 2c can be reduced. Space utilization efficiency can be further improved.

The cool air passage 27 leading to the cooler 25
Is located above and below the storage box 58a and the electrical cover 58b of the circuit storage section for storing the electric circuit 58 through the inner box 2b and the heat insulating material 2c, which are heat insulating layers, and has a cold air passage in the front-rear direction. 27 and the circuit storage section do not overlap, which also improves the utilization efficiency of the space in the vegetable compartment 12.

Further, the return port 12 is located below the cool air passage 27.
b, the return port 12b is located above the back of the vegetable compartment 12, so that the cool air flows sufficiently to the vicinity of the upper rear portion of the vegetable compartment, and the vegetable compartment 12 can be cooled more efficiently. It has become.

Although the vegetable case cover 54a is provided above the storage container 54 so as to cover the upper opening of the storage container 54, a space formed by the vegetable case cover 54a and the partition plates 31 and 32 is also provided. A part of the cold air in the refrigerator compartment 11 discharged to the front inside the vegetable compartment 12 through the communication passage 12a becomes a cold air passage that flows backward, and at least one of the vegetable case cover 54a and the partition plates 31, 32 is provided. By providing a convex portion from one side and adjusting the opening area of the cool air passage, the amount of cool air flowing backward on the vegetable case cover 54a and the amount of cool air flowing in front of the storage container 54 can be set appropriately. It becomes possible to efficiently and indirectly cool the stored matter in the container 54 to an appropriate temperature.

The inner box 2b located above the storage box 58a near the return port 12b has an inclined surface that becomes higher toward the rear, and the return cool air sucked into the return port 12b changes its flow direction. Instead, as in the case of the vertical surface of the inner box 2b, it is easy to flow upward in the cold air passage 27. Therefore, the ventilation resistance is reduced, which helps to improve the ventilation efficiency, and also prevents the generation of eddy currents, which also helps to reduce the ventilation noise.

Further, when the upper part of the storage box 58a is substantially horizontal, the heat insulating material 2c filled between the upper part of the storage box 58a and the inclined surface of the inner box 2b moves vertically in the return port 12b. Can be made thicker in front of the upper portion of the storage box 58a, which is a substantially horizontal surface, without sufficiently reducing the opening area of the storage box 58a, and the heat generated from the electric circuit 58 is sufficiently insulated. The cooling efficiency is improved by preventing intrusion into the air. In addition, from the front to the rear of the upper part of the storage box 58a, which is a substantially horizontal plane, the thickness of the heat insulating material 2c is further increased, thereby further preventing heat from the electric circuit 58 from entering the inside of the storage. This will help to improve the cooling efficiency.

Further, the upper part of the storage box 58a is formed with an inclined surface which becomes higher toward the rear like the inclined surface of the inner box 2b.
If the heat insulating layer composed of the inclined surface of the inner box 2b and the heat insulating material 2c around the inner box 2b and the upper portion of the storage box 58a having the inclined surface is formed as the inclined surface having a required thickness, the storage box 58a is maintained without impairing the heat insulating efficiency. The capacity of the circuit storage section composed of the above can be increased, the storage of the electric circuit 58 can be facilitated, and the circuit storage section can be reduced by appropriately adjusting the size of the electric circuit 58, and the storage of the inner box 2b around the circuit storage section can be reduced. The amount of inward protrusion is reduced, which also increases the space utilization efficiency without compromising the heat insulation efficiency.

It should be noted that, even if the inclined surface of the inner box 2b positioned above the storage box 58a and the inclined surface of the upper portion of the storage box 58a are part of the corresponding portions, the above-mentioned effects can be obtained to some extent. In addition, at least a part of the inclined surface may be a curved surface, and the inclined surface of the inner box 2b and a substantially vertical surface of the inner box 2b in the vicinity thereof may be smoothly formed by a part of the curved surface that is concave upward. In the case of vacuum forming in the manufacture of the inner box 2b, tearing at the edge of the inner box 2b is less likely to occur, and the direction of the cool air flow gradually changes, so that the cool air flows more easily.

The storage box 58a and the electrical cover 5
Since the opening 58c is provided in the circuit housing portion above the upper portion 8b, the air heated by the heat generated by the electric circuit 58 flows to the outside through the opening portion 58c, and flows between the storage box 58a and the lower portion of the electrical cover 58b. The outside air enters through the provided opening 58d of the circuit housing, and not only helps to cool the electric circuit 58 in the circuit housing formed by the housing box 58a and the electrical equipment cover 58b, but also detects the outside air temperature. If the outside air temperature sensor is provided in the electric circuit 58, a more accurate outside air temperature will be detected, and the outside air temperature sensor is provided near the opening 58d through which outside air enters. And its accuracy will be more certain.

Further, the inclined surface at the upper part of the storage box 58a becomes higher toward the rear, and the opening 58c is located near the high part of the inclined surface, so that the warmed air does not stay and the opening 58c Flows near the opening 58c
From the outside easily. It should be noted that if the portion extending below the storage box 58a near the opening 58c in this drawing is reduced, it becomes easier to flow out.

Further, since the storage box 58a and the electrical cover 58b near the opening 58c overlap in the front-rear direction so that the wall surface from the storage box 58a is on the outside, water intrusion from the outside is prevented to some extent. You can do it.

The same effect can be obtained even if the openings 58c and 58d are separately provided in the storage box 58a and the electrical cover 58b. In addition, when the upper portion of the opening 58c is continuously projected rearward from the wall surface, or the rear end of the projection is lowered downward and overlaps with at least a part of the opening of the opening 58c, from the outside, Provides some protection against water ingress.

Then, similarly, for the opening 58d,
The upper part of the opening 58d is continuously protruded rearward from the wall surface, or the rear end of the protruding part is lowered to lower the opening 5d.
If at least part of the opening 8d overlaps or the opening overlaps in the front-rear direction, and the opening is directed downward as shown in this drawing, it serves to prevent water from entering from the outside.

The storage box 58 near the blower 22
a The inner box 2b located below has an inclined surface that becomes lower toward the rear, and the cool air near the inner box 2b around the rear of the blower 22 sucked by the fan of the blower 22 gradually changes its direction. The air flows easily in the direction of the fan of the blower 22 on the inclined surface of the inner box 2b, which helps to improve the blowing efficiency and also prevents the generation of the vortex, thus helping to reduce the blowing noise.

When the lower part of the storage box 58a is substantially horizontal, the heat insulating material 2c filled between the lower part of the storage box 58a and the inclined surface of the inner box 2b maintains the air blowing performance. Can be thicker in front of the lower part of the storage box 58a, which is substantially horizontal,
The heat generated from the electric circuit 58 is sufficiently insulated, and the heat generated from the electric circuit 58 is prevented from entering the inside of the storage, thereby improving the cooling efficiency. In addition, from the front to the rear of the lower part of the storage box 58a, which is a substantially horizontal plane, the thickness of the heat insulating material 2c is further increased, thereby further preventing the heat from the electric circuit 58 from entering the inside of the storage. This will help to improve the cooling efficiency.

Further, the lower portion of the storage box 58a is formed with an inclined surface which becomes lower toward the rear similarly to the inclined surface of the inner box 2b.
When the heat insulating layer composed of the inclined surface of the inner box 2b, the heat insulating material 2c around the inner box 2b, and the inclined lower portion of the storage box 58a is formed to have the required thickness, the storage box 58a and the like can be moved without impairing the heat insulation efficiency. The capacity of the circuit storage section can be increased, and the storage of the electric circuit 58 can be easily performed.
By appropriately adjusting to the size of 8, the circuit housing portion can be made smaller, the amount of the inner box 2b around it protruding into the inside of the box is reduced, and this also reduces the space use efficiency without impairing the heat insulation efficiency. Will be improved.

It should be noted that, even if the inclined surface of the inner box 2b located below the storage box 58a and the inclined surface of the lower portion of the storage box 58a are a part of the corresponding portions, the above-mentioned effects can be obtained to some extent. In addition, at least a part of the inclined surface may be a curved surface, and the inclined surface of the inner box 2b and a substantially vertical surface of the inner box 2b in the vicinity thereof may be smoothed by a part of the curved surface convex upward. In the case of vacuum forming in the manufacture of the inner box 2b, tearing at the edge of the inner box 2b is less likely to occur, and cool air is more likely to flow.

Further, the inclined surface at the lower part of the storage box 58a becomes lower toward the rear, and since the opening 58d is near the lower part of the inclined surface, even if water enters the inside of the storage box 58a. When water is generated due to dew condensation or the like inside the storage box 58a, the water and water collect at the lower portion of the storage box 58a and flow out of the opening 58d along the inclined surface to the outside.
The effect of drainage from the inside occurs.

Further, as described above, the electrical equipment cover 58b near the opening 58d overlaps in the front-rear direction so as to be outside the wall surface from the storage box 58a and the back of the refrigerator 1 main body. Water can be prevented from entering the building to some extent.

Even if only one of the opening 58c and the opening 58d is provided as described above, a certain degree of individual effect corresponding to the above will be produced even if the degree is different. If several openings similar to the above are provided in the electrical cover 58b, the cooling effect in the storage box 58a is further increased.

Further, a space including a machine room provided with the compressor 20 and the like below the freezing room 13 provided through the freezing room 13 and the heat insulating layer is partitioned right and left by a partition wall extending forward and backward. Near the compressor 20 behind the partition wall, a blower 77 for the condenser is provided.
, A compressor 20 is provided on the right side, and at least a part of the condenser 71 is provided on the left side.
7, the outside air is sucked in, and at least a part of the condenser 71 provided on the left side is cooled, and the condenser blower 7 is cooled.
After the air passing through 7 cools the surface of compressor 20 and a passage is provided in the space so as to be discharged into the room from the right front, at least part of condenser 71 and the compressor 71 are compressed by condenser blower 77. The machine 20 and other heating elements in the machine room and the space can be cooled.

It is apparent that the same effect can be obtained even if the positions of the compressor 20, the condenser 71 and the like are switched in the left-right direction and the blowing direction is also switched accordingly.

[0094] A portion of the machine room cover 20c for closing the machine room in which the compressor 20 and the like are provided, which is on the left side of the partition wall and has a pressure lower than the atmospheric pressure when the condenser blower 77 is operated. Is provided with an opening 20d,
An opening 20d is provided on the low-pressure side of the passage, so that air is sucked from the outside of the back of the refrigerator 1 through the opening 20d, and serves to cool parts of a machine room including the compressor 20 and the like. .

Moreover, unlike the conventional case, the hot air that has cooled the heat-generating components in the machine room such as the compressor 20 is not discharged to the outside of the back of the refrigerator 1, but is sucked even in the air outside of the back of the refrigerator 1. There is no rise in the temperature of the outside air near the back of the refrigerator 1 due to the discharge of hot air, and the storage box 58a and the electrical cover 58b that store the electric circuit 58 are:
Since it is located at a position lower than the conventional product, the rise in the outside air temperature around the product is small, and as a result, the temperature rise of the electric circuit 58 is also suppressed lower than in the conventional case.
As the electric components and the circuit board of the electric circuit 58, those having a low allowable limit temperature can be used, or when the conventional components are used, the margin of the temperature limit increases, which leads to the improvement of the quality.

Further, in the passage on the side where the compressor 20 is located,
If the condenser blower 77 is provided by adding a partition in the front-rear direction in front of the compressor 20 and an opening similar to the opening 20d is provided in the machine room cover 20c near the rear of the compressor 20, the refrigerator 1 near the compressor 20 , The backside of the refrigerator 1 of the compressor 20 can be further cooled, the temperature rise of the compressor 20 in the vicinity of the machine room cover 20c by the compressor 20 can be further reduced, and the electric circuit 58 can be accommodated. The rise of the outside air temperature around the storage box 58a and the electrical equipment cover 58b is further reduced.

In order to keep the radiation of the radiant heat of the compressor 20 to the outside low, as shown in FIG.
Is preferably covered with a wall surface extending from the upper part of the opening 20d, and is opened downward. This also serves to reinforce the periphery of the opening 20d and also to prevent water from entering the machine room.

Further, the opening 20d and the low-pressure section such as the machine room are connected to the openings (eg, openings 58c and 58d) of the storage box 58a, which is a circuit storage, and the electrical cover 58b by a communication path. By connecting the inside of the unit and a low-pressure part such as a machine room by the communication passage, and separately providing an opening communicating with the outside air in the circuit storage unit, air in the circuit storage unit flows into the low-pressure unit of the machine room, The electric circuit 58 in the circuit housing can be forcibly cooled, and the electric parts and the circuit board of the electric circuit 58 can be used with lower allowable temperature limit. And increase quality.

[0099] Even if the amount of heat generated by the components of the electric circuit 58 in the circuit housing for controlling the rotation speed of the compressor 20 or the like by frequency conversion or the like is increased and cooling is required, the circuit housing and the circuit housing can be cooled. Since the machine room having the compressor 20 and the blower 77 for the condenser is close to each other and can be connected to each other by a short communication passage, the ventilation resistance of the communication passage is small, and the ventilation area may be small. Even such a small condenser blower 77 can sufficiently assist in cooling.

Further, an opening communicating with the outside is provided at a position below the circuit accommodating portion and on the rear side of the refrigerator 1, and a portion of the communication passage connected to the machine room-side opening is connected to the opening. If an opening communicating with the outside air is separately provided above the circuit storage portion so as to connect the inside of the storage portion and the external space on the back side of the refrigerator 1, ventilation by natural convection is possible, and the electric circuit 58 in the circuit storage portion is formed. When the communication path is connected to the inside of the circuit storage section while cooling, the lower side of the circuit storage section is connected to the communication path, so that the communication path becomes drainable.

The communication path may be formed by providing a duct on the back surface of the refrigerator 1, or may be provided in the heat insulating material 2c as long as the heat insulating thickness inside the refrigerator is sufficient. .

A storage box 58a as a circuit storage section and an electrical cover 58b are provided on the rear side of the refrigerator 1 near the upper part of the blower 22 below the refrigerator 1 via a heat insulating layer including a heat insulating material 2c. Is provided with an electric circuit 58, and is electrically connected to each electric component including the compressor 20 by wiring (for example, lead wire).
Opening / closing valve (reference numeral 78 shown in FIG. 3) 78, defrosting heater 62 on freezer compartment 13 side, blower 22, condenser blower 77, temperature sensor for freezer compartment 13 (reference numeral 76 shown in FIG. 3), ice maker 67 The wiring between the electrical components such as the above and the electric circuit 58 is much shorter than that of the conventional product. Also, since the wiring for connection to each electrical component is drawn out vertically from the electric circuit 58 in the circuit housing portion, the thickness of each wiring bundle is reduced to one of the lower conventional products. Thinner than

Therefore, the cost of the wiring material is reduced, and the work of assembling the wiring and the bundle of wirings into the refrigerator becomes easier, so that the assemblability and the reliability of the finish are improved. Also, after temporarily fixing a wire or a bundle of wires to the heat insulating material 2c side of the inner box 2b with a tape or the like, a gap between the inner box 2b and the outer box 2a is filled with a heat insulating material 2c such as urethane foam. Since the wiring material occupies few places and the wiring bundle is narrow, the possibility of occurrence of a part that hinders the flow of urethane or the like due to the wiring material is reduced, and the void (gas) in the heat insulating material 2c is reduced. The possibility of the occurrence of (space) is also reduced, which contributes to the improvement of the maintenance of the heat insulating property, and also reduces the area occupied by the wiring material having high thermal conductivity in the heat insulating material 2c, thereby helping to improve the heat insulating property. Labor saving.

In FIG. 1, the water supply pump 66, the defrost heater 61 and the blower 26, and the refrigeration room 1
The length of the wiring to the electric circuit 58 to the temperature sensor (reference numeral 75 shown in FIG. 3) and the like does not vary much from the conventional product, but the wiring direction is different from that of the conventional product.
And the thickness of the bundled wires is smaller than the conventional product (for example: FIG. 9 Conventional product = maximum bundle diameter of about 2).
0 mm, FIG. 1 invention product = maximum bundle diameter of about 15 mm), which improves the workability in assembling wiring bundles and temporarily fixing them with tape or the like.

Although the wiring to the illumination lamp 51 is long, the number of wirings is small (for example, four), so that the possibility of deterioration in heat insulation and workability is very small. In addition, the defrost heater 61, the cooler 25, and the blower 26 are lowered below,
If the storage box 58a and the electrical cover 58b are provided near the upper part of the circuit storage section, the length of the wiring to the electric circuit 58 is further shortened, and the effects of the above are further improved.

Moreover, wiring outlets are provided below the lower wall surface or side wall surface of the circuit housing portion of the storage box 58a and the electrical equipment cover 58b, and when each of the above wirings is pulled out, the downward wiring occupying most of the wiring is reduced. The length can be further shortened, and the above effect is further improved. In addition, when the wiring outlet is provided on the lower wall surface of the circuit housing part, even if dew condensation occurs around the wiring due to the thickness of the heat insulation layer, moisture due to the dew condensation hardly rises upward. In addition, it is possible to prevent moisture from entering the circuit housing.

Further, when different wiring outlets are provided above the upper wall surface or the side wall surface of the circuit housing portion and the wiring is drawn upward, the number of wiring outlets increases, and the circuit housing of the heat insulating material 2c is stored. Although the number of sealing processes for preventing intrusion into the inside increases, the length of the wiring member going upward is further shortened, and the above-mentioned effect is further improved.

Further, when the power cord outlet 58e is provided at the center in the vertical direction above the circuit accommodating portion, the distance between the power cord outlet 58e and the outlet (the outlet of the external power source) in the vertical direction is as follows. The same value is obtained regardless of whether the outlet is above or below the wall of the room, and the power cord of the refrigerator 1 (not shown)
Can be made shorter (for example: about 50 cm) than the one in which the circuit storage portion is located above the back of the refrigerator 1 main body, which is advantageous in terms of cost, improves the assemblability, and is particularly located above due to the positional relationship. Even when connected to an outlet, useless cord slack is reduced, and the possibility of cord damage is reduced.

In the drawing, the storage box 58 is used.
The power cord outlet 58e is provided with a recess at the side of the joint between the power cord cover 58b and the power supply cover 58b. An opening is provided above one of the storage box 58a and the electrical cover 58b, and the power cord outlet is provided. The same effect as described above can be obtained.

In FIG. 6, the inner box 2b around the blower 22
A wiring 82 having a connector 81 is inserted into the opening, and a gap between the wiring 82 and the opening is sealed with a sealing material. The wiring 82
Is drawn into the circuit storage section from the opening of the storage box 58a, and the gap between the opening of the storage box 58a through which the wiring 82 passes and the wiring 82 is also sealed with a sealing material.

Similarly to the above, a wiring 85 having a connector 84 is inserted into the opening of the bottom plate 83 in the machine room around the compressor 20, and the gap between the wiring 85 and the opening is sealed with a sealing material. Do it. Further, the wiring 85 is drawn into the circuit storage section from the opening of the storage box 58a, and is stored in the storage box 58a through the wiring 85.
The gap between the opening and the wiring 85 is also sealed with a sealing material.

Further, the wiring 86 electrically connected to the electric circuit 58 is similarly sealed through the opening of the storage box 58a for connection with the electrical components above the vegetable compartment 12. Drawn to.

Each of the wirings 82, 85, and 86 is bound at an appropriate position by a binding band or the like, and is taped to a predetermined place on the heat insulating material 2c side of the inner box 2b.
After that, the gap between the inner box 2b and the outer box 2a is filled with a heat insulating material 2c such as urethane foam.

The outer box 2a is composed of a cabinet 2d having a side surface and an upper surface integrated with each other and a back plate 2e on the back side, and the wiring 8 connected to each electric component.
The connectors 81 and the like 2 and 86 are pulled into the inside of the refrigerator from the opening of the inner box 2b, the respective openings are sealed, and the wires 82, 85 and 86 are routed on the inner box 2b and taped in place. Then, the inner box 2b and the cabinet 2
After the bottom plate 83 is assembled into the inner box 2b and the cabinet 2d, the connector 84 is pulled out from the opening of the bottom plate 83 to the machine room side, and the opening is sealed.

Further, when the back plate 2e is incorporated into the cabinet 2d and the storage box 58a is incorporated into the back plate 2e, the storage box 58
The connection terminals of the wirings 82, 85, 86 to the electric circuit 58 are drawn into the inside of the storage box 58a through the opening a, and the storage box 58a is attached to the back plate 2c. After sealing the openings, the outer box 2a and the inner box 2b including the cabinet 2d and the back plate 2e and the gap between the inner box 2b and the bottom plate 83 are filled with urethane foam or the like. Insulation 2
c will be filled.

Thereafter, the electric circuit 58 is incorporated in the storage box 58a, and the wirings 82, 85, 86
Is electrically connected to the electric circuit 58 by a connector (not shown) provided at the terminal.

The connector 84 has the compressor 2
In the state where the five driving leads coming from zero and the thermo-lead for preventing excessive temperature rise are covered with the protective tube, and two driving leads coming from the condenser blower 77 are similarly used. Each of them is connected to the connector 84 while being covered with a protective tube. Each lead wire covered with the protective tube is fixed to a wall of a machine room or the like with a binding band, and a connection point to the connector 84 and its periphery are subjected to waterproof treatment with a vinyl cover or the like.

The five lead wires to the compressor 20 may be subjected to a large current such as an inrush current or a lock current, and have a large current-carrying area (for example, 0.75
Square mm) thick lead coating thickness (eg: 0.3 m)
m or more) of heat-resistant double sheath, so that the lead wire becomes considerably thick (for example, an outer diameter of 3 mm), and the outer diameter of the bundle of wirings 85 corresponding to each of the lead wires is 10 m.
m, which is quite thick.

The connector 81 includes a defrost heater 62 and a blower 22, an overheating prevention temperature fuse (not shown) provided near the defrost heater 62,
7, a drive motor (not shown) for driving the ice tray, a temperature sensor (not shown) for detecting completion of ice making, a freezing compartment 13
Eight power supply voltage lead wires and four signal lead wires coming from the temperature sensor 76 for
And is routed on the wall surface of the rear plate 33a and the like, and is connected to the connector 81. The outer diameter of the bundle of wirings 82 corresponding to the respective lead wires also reaches about 12 mm, which also becomes considerably thick.

The connector 81 is connected to the blower 22
A part of the peripheral cool air passage 23 is located in an isolating portion provided by the unevenness of the inner box 2b, and an isolating portion lid (not shown) having a hinge is provided at a position corresponding to the isolating portion of the evaporator cover 33, After connecting each of the lead wires to the connector 81, the connector 81 and the lead wire are pushed into the isolation portion and covered with the isolation portion lid, and the connection portion and the like are exposed in the cool air passage 23 to cool the air. They are not exposed.

The wirings 82 and 85 are connected to the inner box 2b.
Is wrapped around the outer box 2a side surface, and is bundled into one bundle (for example, an outer diameter of 15 mm) and guided into the storage box 58a. Since the storage box 58a is very close to the blower 22 and the compressor 20 as compared with the conventional case, the wiring 82,
The length of the wiring on the inner box 2b of the 85 is considerably shortened, the cost of wiring material is reduced, and the work of assembling the wiring and the bundle of wiring into the refrigerator becomes easier, so that the assemblability and finish reliability are improved. I do.

The compressor 20 is provided on one right side in the left-right direction, and the cooler 21 is provided on the left side different from the compressor 20 in the left-right direction via a heat insulating layer.
A heat insulator 2c provided with a blower 22 around the periphery and provided to a required thickness
Since the circuit housing portion is provided above the blower 22 via a heat insulating layer having the following structure, the distance between the housing box 58a and the compressor 20 is further shortened, the wiring material is further reduced in cost, and the refrigerator is Since the work of incorporating the wiring or the bundle of wiring into the wiring becomes easier, the assemblability and the reliability of the finish are further improved.

When the gap between the inner box 2b and the outer box 2a is filled with a heat insulating material 2c such as urethane foam, the wiring 8
Since the locations occupied by the wires 2 and 85 are small, it is possible to reduce the possibility of the occurrence of locations that obstruct the flow of urethane or the like due to the wirings 82 and 85 and to generate voids (gas spaces) in the heat insulating material 2c. The heat insulating material 2c also helps to improve the maintenance of the heat insulating property, and also reduces the area occupied by the wiring material having high thermal conductivity in the heat insulating material 2c, thereby helping to improve the heat insulating property and to save energy. Become.

Note that, even when the cooler 21 is provided above the compressor 20 and the blower 22 is provided above the compressor 20, the length of the corresponding wiring is slightly longer than that described above. The effect is obtained.

In FIG. 7, reference numeral 87 denotes a storage box 58
This is a duct that passes through the opening of the bottom plate 83 from inside a and connects to the low-pressure side of the machine room. When the condenser blower 77 is operated, the air in the storage box 58a flows through the duct 87 to the low pressure side of the machine room.

Therefore, the air in the circuit storage section including the storage box 58a and the electrical cover 58b flows into the low-pressure section of the machine room, and the electric circuit 58 in the circuit storage section can be forcibly cooled. A component or circuit board having a low allowable limit temperature can be used, or when a conventional component is used, the margin of the temperature limit is increased, which leads to an improvement in quality.

Since the circuit housing and the machine room having the compressor 20 and the condenser blower 77 are close to each other, they can be connected to each other by a short communication path, and the ventilation resistance of the communication path is small. The ventilation area may be small, and a small-sized condenser blower 77 conventionally used is sufficiently useful.

The duct 87 is assembled by assembling the bottom plate 83 into the inner box 2b and the cabinet 2d, and then pulling out the tip of the duct 87 from the opening of the bottom plate 83 to the machine room side. Apply seal processing. When the back plate 2e is installed in the cabinet 2d and the storage box 58a is installed in the back plate 2e, the distal end of the duct 87 is inserted through the opening of the storage box 58a.
a, and the storage box 58a is attached to the back plate 2e.

After the opening is sealed, the gap between the outer box 2a and the inner box 2b, which are composed of the cabinet 2d and the back plate 2e, and the gap between the inner box 2b and the bottom plate 83 are filled with urethane foam or the like. Insulation material 2c
Will be filled.

The duct 87 may be a blow-molded product in which bellows-like irregularities are provided at appropriate positions in the bending portion, may be a resin molded product having no irregularities, or may be made of a heat insulating material such as styrene foam. . And, if necessary, the duct 8 which approaches the inside of the duct 87 or the inner box 2b.
A spacer or a heat insulating material may be appropriately provided in the portion 7 or the inner box 2b.

Furthermore, the duct 87 is connected to the heat insulating material 2c.
If it is provided inside, if the heat insulation thickness is not sufficient, it will jump out to the back of the refrigerator 1, but the storage box 58 a
The same effect as described above can be obtained by providing a duct connected to the opening of the machine room cover 20c behind the back plate 2e from the circuit housing portion including the electrical cover 58b and the circuit housing portion.

At this time, if the duct is disassembled and detachably provided, the inside of the duct can be easily cleaned, and not only can it be kept clean, but also it is possible to prevent the duct from being clogged by dust or the like.

In FIG. 8, the compressor 2 below the freezing compartment 13
A partition wall 88 is provided so as to partition in the front-rear direction a space provided through the heat insulating layer and the freezing room 13 including the machine room in which 0 and the like are arranged. In front of the partition wall 88, a partition wall 89 for partitioning in the left-right direction is provided. Further, a partition wall 90 for partitioning in the left-right direction is provided in a place to be a machine room behind the partition wall 88. The partition wall 90 is provided with a condenser blower 77.

The evaporating dish 9 is located on the right side of the partition wall 89.
1 is provided, and a metal evaporating dish receiving plate 92 is provided to support the evaporating dish 91. Further, a discharge pipe 20a of the compressor 20 is provided on the lower surface of the evaporating dish receiving plate 92.
A condensing pipe 93 connected to the water supply is provided.

Further, on the left side of the partition walls 89 and 90, an opening is provided in the partition wall 88, and a condenser 71 having fins passing through the openings is provided. A part of the condenser 71 is supported by a part of a compressor mount 94 supporting the compressor 20, and a part of the condenser 71 is also supported by a bottom plate 95 provided below the partition wall 89. I have. The bottom plate 9 is also provided with the evaporating dish receiving plate 92 having a condensing pipe 93 on the lower surface.
5 supports with space.

Further, a concave portion is provided on the upper part of the partition wall 88,
A drain pipe 96 is provided via a sealing material,
The opening at the tip of the drain pipe 96 is located above the evaporating dish 91. The other end of the drain pipe 96 is connected to drain receiving members 63 and 64. Therefore, water that has melted frost and the like on the coolers 21 and 25 by the defrost heaters 61 and 62 is drained by the drain receiving members 63 and 6.
4 flows into a drain pipe 96 and accumulates in the evaporating dish 91.

A sealing material is adhered to the upper portions of the partition walls 88, 89, 90 and the upper portion of the drain pipe 96 so as to seal the gap with the bottom plate 83. The lower portions of 88, 89, 90, the compressor mount 94, and the bottom plate 95 are mutually sealed.

Also, a pipe (not shown) similar to the condensing pipe 93 is attached to the cabinet 2d and the back plate 2e on the heat insulating material 2c side of the bottom plate 83 with an aluminum foil tape or the like. In addition, it serves as an auxiliary function of the condenser 71.

The refrigerant flowing out of the discharge pipe 20a of the compressor 20 flows from the condensing pipe 93 to the pipe (not shown) of the back plate 2e, and then flows from the pipe (not shown) of the bottom plate 83 to the condenser. And flows through the pipe (not shown) of the cabinet 2d. During this time, the refrigerant is cooled under high pressure to change from gas refrigerant to liquid refrigerant, and reaches the capillary tube 72 through a dryer (not shown).

When the condenser blower 77 is operated, air is sucked from between the bottom plate 95 and the bottom plate 83 from the front left side of the partition wall 89, passes through the opening of the partition wall 88, and enters the machine room. Blower for condenser 77
During this time, heat is taken from the condenser 71 and the condenser 7
Cooling the refrigerant passing through 1 aids liquefaction.

Then, the air flows into the machine room on the compressor 20 side, cools the compressor 20, and reaches the upper side of the evaporating dish 91 through the opening of the partition wall 88. After that, if defrosted water is accumulated in the evaporating dish 91, the accumulated defrosted water is helped to evaporate, and the air between the bottom plate 95 and the bottom plate 83 is heated in a warm state including the evaporated water. Is discharged from the right front of the partition wall 89 to the outside.

Since the opening 20d is provided in the portion of the machine room cover 20c which will be the low pressure portion on the machine room side,
Outside air flows into the low pressure section of the machine room from the outside on the rear side of the refrigerator 1 through the opening 20d, and serves to cool a heating element inside the machine room such as the compressor 20.

The condensation pipe 93 has a high temperature (for example: 8
(Approximately 0 ° C.), the water in the evaporating dish 91 is heated and easily evaporated via the metallic evaporating dish receiving base 92, and the condensing pipe 93 is heated by the heat of vaporization and the flow of air by the condenser blower 77. It will be cooled.

Further, the refrigerant in the pipe provided on the heat insulating material 2c side of the bottom plate 83 is also used for the condenser blower 77.
Cooling by the flow of air.

Then, unlike the related art, the hot air that has cooled the components in the machine room such as the compressor 20 is not discharged to the outside of the back of the refrigerator 1, but is sucked even in the air outside of the back of the refrigerator 1. There is no rise in the temperature of the outside air near the back of the refrigerator 1 due to the above, and the storage box 58a and the electrical cover 58b, which house the electric circuit 58, are located at a lower position than the conventional product on the back of the refrigerator 1 main body. The rise of the outside air temperature in the vicinity is small, so that the electric circuit 58
The temperature rise will be lower than before,
As the electric components and the circuit board of the electric circuit 58, those having a low allowable limit temperature can be used, or when the conventional components are used, the margin of the temperature limit increases, which leads to the improvement of the quality.

When the pipe provided on the heat insulating material 2c side of the back plate 2e is positioned above the storage box 58a storing the electric circuit 58, the electric circuit 58 is further stored. The rise in the outside air temperature around the storage box 58a and the electrical cover 58b is reduced.

In the present invention, the refrigerator compartment 11 and the vegetable compartment 12
Are cooled by the same cooler 25. However, even when the refrigerator compartment and the freezer compartment are cooled by the same cooler, the cool air is discharged by disposing the cooler on the side where the member 42 is disposed. And the same effect as described above can be obtained. Further, although evaporators are used as the coolers 21 and 25, the same effect can be obtained by using a cooler based on a Peltier method or another cooling method.

When the member 42 is provided with a moisturizing function, for example, by providing irregularities on at least a part of the member 42 or forming a rough surface on the member 42, the dew condensation generated on the member 42 flows down. You can let it stay without you. And since indoor humidity is maintained and evaporation can be performed by evaporation of dew condensation water, it is useful for long-term preservation of stored items (especially vegetables and raw materials). Further, a moisturizer having a moisturizing function may be attached to the member 42.

In the above configuration, the cooler 25 is provided above the rear side of the refrigeration compartment 11, but the refrigeration compartment is located closer to the partition plate 46, which is the boundary between the refrigeration compartment 11 and the ice temperature compartment 14, which is the isolation compartment. Even when at least a part of the cooler 25 is provided on the 11th side, the depth of the ice greenhouse 14 is slightly shortened, but the same effect as described above is produced. In addition, when the member 42 is provided near the cooler 25 on the ice temperature chamber 14 side, the refrigerator in which the ice temperature chamber 14 is cooled more uniformly is provided.

In the case where at least a part of the cooler 25 is provided on the side of the refrigerator compartment 11 relative to the partition plate 32 which is the boundary between the refrigerator compartment 11 and the vegetable compartment 12, cooling of the portion on the vegetable compartment 12 side is performed. Although a heat insulating layer having a sufficient thickness is required in front of the vessel 25, the heat insulating layer is reduced in size compared to the conventional case, and effective use of space can be achieved. Further, the passage on the discharge side of the blower 26 becomes shorter than before, and a refrigerator with improved blowing efficiency can be obtained.

Further, regarding the wiring and the power cord, even if the arrangement order and the positional relationship of the storage compartments such as the refrigerator compartment 11, the vegetable compartment 12, the freezing compartment 13 and the like are different, the same effects as described above can be obtained. Furthermore, even when the refrigerator compartment 11 and the freezer compartment 13 are cooled only by the same cooler 22, the same effect as described above can be obtained.

In the present invention, the phrase that a part of the cool heat generated by the cool air passing through the cool air passage is released into the storage chamber through the member means that a part of the cool air passing through the cool air passage absorbs heat from the member and removes the member. Cooling means that the member absorbs heat from the storage room and cools the storage room.

The left-right direction means the left-right direction when the refrigerator is viewed from the front, and the front-rear direction means the front-back direction when the refrigerator is viewed from the front.

[0154] The sealing treatment of the opening in the wiring or the like refers to a sealing process performed by a sealing material or a sponge or the like to remove a gap formed between the surface of a wiring or a duct or the like passing through the opening and the surface of the duct and the opening. That means.

Further, in this drawing, hatching of a narrow cross section is omitted.

[0156]

According to the present invention, since the refrigerator according to the present invention is configured as described above, according to the present invention, a part of the wiring between the electric component and the electric circuit is shorter than the conventional product, so that the cost is reduced. Cost, assemblability and finish reliability are improved, and the possibility of locations where the wiring material impedes the flow of urethane during foaming is reduced, resulting in the generation of voids (gas spaces) in the heat insulating material. In addition to helping to improve the maintenance of heat insulation, the area occupied by highly thermally conductive wiring material within the heat insulation material is also reduced, and refrigerators that help improve heat insulation and save energy can get.

Further, according to the present invention, the return cold air sucked into the return port can easily flow upward in the cool air passage, so that a refrigerator with reduced ventilation noise, reduced ventilation noise and improved ventilation efficiency can be obtained. Also, it is possible to increase the volume inside the circuit storage section without impairing the heat insulation efficiency, making it easier to store the electric circuit, and by appropriately adjusting to the size of the electric circuit, the surrounding inner box protrudes into the inside of the cabinet The number of parts is reduced, and a refrigerator with improved space utilization efficiency without impairing the heat insulation efficiency can be obtained.

Further, according to the present invention, the air in the circuit housing heated by the heat of the electric circuit flows out from the opening to the outside, and the outside air enters from the opening provided below, and enters the circuit housing. In addition to helping to cool certain electric circuits, if the electric circuit is equipped with an outside air temperature sensor, more accurate outside air temperature will be detected, even if water enters the circuit housing or dew condensation inside. Even if moisture is generated, the refrigerator flows to the outside through an opening provided below, so that a refrigerator having an effect of draining water from the inside of the circuit housing portion can be obtained.

Further, according to the present invention, the outside air on the back side of the refrigerator is sucked from the opening of the cover of the machine room without discharging the warm air that has cooled the machine room such as the compressor to the back side of the refrigerator. The rise of outside air near the back of the
The circuit housing section that houses the electric circuit has a small rise in the outside air temperature around it, and the temperature rise of the electric circuit will be suppressed low, and the electric parts and circuit boards of the electric circuit will be
A refrigerator having a low permissible limit temperature can be used, or when using conventional parts, a refrigerator with improved temperature limit and an improved quality can be obtained, and an electric circuit in the circuit storage section can be forcibly cooled. As a result, a refrigerator having a lower allowable limit temperature can be used, or when a conventional component is used, the margin of the temperature limit is increased, and a refrigerator with further improved quality can be obtained.

Further, according to the present invention, the power cord provided in the circuit housing can be shortened, which is advantageous in terms of cost, improves the assemblability, and reduces the useless slack of the cord even when connected to an outlet. A refrigerator is obtained which has a reduced probability of cord damage.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a refrigerator of the present invention.

FIG. 2 is a front view showing the refrigerator of the present invention.

FIG. 3 is a circuit diagram showing a cooling cycle of the refrigerator of the present invention.

FIG. 4 is a perspective view showing members of the refrigerator of the present invention.

FIG. 5 is a perspective view showing another member of the refrigerator of the present invention.

FIG. 6 is a diagram showing a wiring state from the vicinity of the vegetable compartment of the refrigerator according to the present invention to below.

FIG. 7 is a view of a communication passage leading from the circuit storage section of the refrigerator of the present invention to the machine room.

FIG. 8 is a diagram of the refrigerator room of the present invention as viewed from above and around the machine room.

FIG. 9 is a side sectional view showing a conventional refrigerator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator 2a Outer box (insulation layer) 2b Inner box (insulation layer) 2c Insulation material (insulation layer) 11 Refrigerator room 12 Vegetable room 12a Communication path 12b Return port 13 Freezer room 20 Compressor 20c Machine room cover 20d Opening 21 Cooling Cooler (first cooler) 25 Cooler (second cooler) 22 Blower (first blower) 26 Blower (second blower) 27 Cold air passage 31 Partition 32 Partition 58 Electric circuit 58a Storage box (circuit storage section) 58b Electrical equipment Cover (circuit storage section) 58c Opening 58d Opening 58e Power cord outlet

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Yoshimura 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside (72) Inventor Shunichi Yamabe 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka F-term (for reference) 3L102 JA01 LB01 LB02 LB22

Claims (16)

[Claims] 1. A compressor is provided below, a cooler is provided near the compressor via a heat insulating layer, a blower is provided around the cooler, and a circuit is provided near the upper part of the blower via a heat insulating layer. A refrigerator provided with a storage section, wherein an electric circuit in the circuit storage section and each of the electrical components are electrically connected by wiring. 2. A compressor is provided below, a first cooler is provided near the compressor via an insulating layer, a first blower is provided around the cooler, and a first blower is provided near the upper part of the first blower. A circuit housing portion is provided via a heat insulating layer, a second cooler is provided above the circuit housing portion via a heat insulating layer, a second blower is provided above the second cooler, and an electric power in the circuit housing portion is provided. A refrigerator, wherein a circuit and each of the electrical components are electrically connected by wiring. 3. A compressor is provided below, a first cooler is provided near the compressor via an insulating layer, a first blower is provided around the cooler, and a first blower is provided near the upper portion of the first blower. A circuit storage section is provided via a heat insulation layer, a second cooler is provided above the circuit storage section via a heat insulation layer, a second blower is provided above the second cooler, and the compressor, the first Cooler, provided an independent first storage room in front of the first blower, the circuit storage unit, the second cooler, provided one or more storage rooms different from the first storage room in front of the second blower, Between the circuit accommodating portion and the second cooler, a cool air passage communicating from at least a part of the different storage room to the second cooler is provided via the circuit accommodating portion and the heat insulating layer. An electric circuit and each of the electric components are electrically connected by wiring. Warehouse. 4. A compressor is provided below, a first cooler is provided near the compressor via an insulating layer, a first blower is provided around the cooler, and a first blower is provided near the upper part of the first blower. A circuit storage section is provided via a heat insulation layer, a second cooler is provided above the circuit storage section via a heat insulation layer, a second blower is provided above the second cooler, and the compressor, the first Cooler, provided an independent first storage room in front of the first blower, the circuit storage unit, the second cooler, provided one or more storage rooms different from the first storage room in front of the second blower, Between the circuit storage section and the second cooler, a cool air passage communicating with the second cooler is provided above the circuit storage section via a heat insulating layer, and a return passage communicating with the different storage chamber below the cool air passage. Make a mouth,
A refrigerator, wherein an electric circuit in the circuit storage section and each of the electric components are electrically connected by wiring. 5. The heat insulating layer in the vicinity of the circuit accommodating portion, wherein the inner side of the heat insulating layer, the side of the cool air passage, or the upper portion of the return opening is a surface that becomes higher toward the rear. The refrigerator described in the crab. 6. The refrigerator according to claim 1, wherein the lower blower side of the heat insulating layer in the vicinity of the circuit storage portion has a surface that becomes lower toward the rear. 7. The refrigerator according to claim 5, wherein at least a part of an upper wall surface of the circuit storage portion has a surface that becomes higher as going backward. 8. The refrigerator according to claim 1, wherein an opening is provided above the circuit housing portion. 9. The refrigerator according to claim 6, wherein at least a part of a lower wall surface of the circuit storage portion has a surface that becomes lower toward the rear. 10. The refrigerator according to claim 1, wherein an opening is provided below the circuit storage section. 11. The first storage room is a freezing room, and a storage room different from the first storage room is provided with a partition in contact with the inside of the cold air passage or above the return port, and in front of the partition. 4. A communication path for communicating the upper and lower sides of the partition, a refrigerator room above the partition, a vegetable room below the partition, and the circuit storage unit provided behind the vegetable room. The refrigerator according to any one of claims 1 to 10. 12. The refrigerator according to claim 1, wherein a wiring outlet is provided below a lower wall surface or a side wall surface of the circuit housing portion. 13. The refrigerator according to claim 1, wherein the power cord outlet provided in the circuit storage portion is provided at a center in a vertical direction. 14. A rear of a machine room provided with a compressor is covered with a machine room cover, an opening is provided in the machine room cover, and at least a part of ambient air for cooling the inside of the machine room from the opening is provided. The refrigerator according to any one of claims 1 to 13, wherein the refrigerator is sucked. 15. The refrigerator according to claim 14, wherein at least a part of the opening is provided around the compressor. 16. The refrigerator according to claim 14, wherein an opening is provided in the circuit housing portion, and the circuit housing is connected to an opening provided in the machine room cover or a low-pressure portion of the machine room by a communication passage. .