JPH08261634A - Refrigerator - Google Patents

Abstract

PURPOSE: To obtain a refrigerator in which electric wiring is laid through a duct without increasing a draft resistance inside the duct and without being affected by electric noise, in regard to the refrigerator controlled by an electronic control circuit. CONSTITUTION: In regard to a duct 12 which is provided between a refrigerating chamber 7 and a freezing chamber 6 and through which cooled air passes and an electric wiring which connects a control base 14 provided in the refrigerating chamber 7 with a load and others located in the freezing chamber 6, two grooves are provided in separate places inside the duct 12 and AC wires 20 and DC wires 21 of the electric wiring are buried separately in the two grooves when they are laid through the duct 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator controlled by an electronic control circuit equipped with a microcomputer or the like.

[0002]

2. Description of the Related Art In recent years, a refrigerator has various additional functions such as automatic ice making and thawing due to the progress of electronic control technology. Further, since the control board is generally installed outside the refrigerator, the wiring is routed from the control board to a functional place (for example, inside the refrigerator).

However, in order to route the wiring from the outside of the refrigerator to the inside of the refrigerator, it is necessary to pass through the heat insulating material of the refrigerator. In general, the heat insulating material of the refrigerator is constructed by assembling the outer box and the inner box first, and then injecting a foaming agent from an injection port attached to the outer box to foam the inside to form the heat insulating material.

Therefore, most of the wiring is arranged in the outer box and the inner box before assembly. At that time, work such as tape fixing work to prevent wiring from moving due to foaming pressure and leak preventive sealing work to prevent leakage of heat insulating material are done, but it takes a considerable number of man-hours here. There is a possibility of causing a leakage of heat insulating material due to insufficient sealing, and also causing a heat leak due to the wiring, which also causes an increase in power consumption (electricity bill).

Further, even when the refrigerator is discarded, the electric wire in the heat insulating material cannot be removed before crushing, which is also a cause of global environmental destruction due to generation of chlorine during incineration or melting.

Therefore, recently, a method of reducing the wiring in the heat insulating material has been proposed, for example, in Japanese Patent Laid-Open No. 3-213384.

The conventional refrigerator will be described below. FIG. 3 shows a sectional side view of a conventional refrigerator. FIG.
In the figure, 1 is a refrigerator main body, an inner box 2, an outer box 3 and an inner box 2
And a foam insulating material 4 filled between the outer case 3 and the outer case 3. Reference numeral 5 denotes a heat-insulating partition wall, which divides the interior of the refrigerator 1 into a freezing compartment 6 and a refrigerating compartment 7. Reference numeral 8 denotes a compressor, which is connected to the evaporator 9 from the compressor 8 via a condenser (not shown), a capillary tube (not shown), etc.
It is arranged so that the refrigerant returns to.

A cooling fan 10 sends the air cooled by the evaporator 9 into the freezer compartment 6. A defrosting heater 11 melts the frost on the evaporator 9. 12
Is a duct, which is provided between the freezing compartment 6 and the refrigerating compartment 7, and a damper 13 is attached to the outlet thereof.
Reference numeral 14 is a control board, which is installed in a concave portion 15 provided in the heat insulating partition wall 5 and is further thermally insulated and closed by an electric component cover 16.

Regarding the refrigerator configured as described above,
The operation will be described below. First, when the freezer compartment temperature sensor (not shown) of the freezer compartment 6 detects a temperature higher than the set temperature, the control board 14 starts the cooling operation. During the cooling operation, the compressor 8 and the cooling fan 10 are turned on. The refrigerant compressed by the compressor 8 reaches the evaporator 9 via a condenser (not shown), a capillary tube (not shown), etc., and is vaporized there to take away ambient heat and perform a cooling operation. After this, the refrigerant returns to the compressor 8 again and repeats the above operation. At this time, the air around the evaporator 9 has a low temperature, and the freezing compartment is cooled by the flow of air generated by the cooling fan 10.

After that, when the freezer compartment 6 is sufficiently cooled and the freezer compartment temperature becomes lower than the set temperature, the cooling operation is stopped (the compressor 8 and the cooling fan 10 are turned off). The above operation is repeated to keep the temperature of the freezer compartment 6 at a low temperature.

Next, when a refrigerating compartment temperature sensor (not shown) in the refrigerating compartment 7 detects a temperature higher than the set temperature, the control board 14 opens the damper 13 to let the cold air in the freezing compartment 6 through the duct 12. Lead to the refrigerator compartment 7. After that, when the refrigerating compartment 7 is sufficiently cooled and the refrigerating compartment temperature becomes lower than the set temperature, the control board 14 closes the damper 13 to shut off the flow of cold air.

Next, when the operation is continued for a fixed time, the evaporator 9
There is frost around and it becomes difficult to cool. At that time, the control board 14 stops the cooling operation and energizes the defrost heater 11. The heat generated at this time is used to melt the frost adhering to the evaporator 9. The fact that the frost has completely thawed means that the evaporator 9
Is detected by a defrost sensor (not shown) mounted near the.

By thus mounting the control board 14 in the refrigerator, the lines to be routed to each load (cooling fan 10, defrosting heater 11, damper 13, etc.) in the refrigerator can be attached to the wall surface in the refrigerator. It was possible to reduce the number of wirings that pass through the foamed heat insulating material 4.

[0014]

However, in the above-mentioned conventional configuration, the control board 14 and each load (cooling fan 10, defrost heater 11 and the like) and each sensor (freezer temperature sensor, defrost sensor, etc.) in the freezer compartment. The electric wiring for connecting to and runs through the inside of the duct 12, but the recent refrigerator has many loads, sensors, etc., and the electric wiring is very large, so that the air passage resistance is large and the cooling performance is affected. Further, since the AC wire and the DC wire are not separated but are combined, there is a possibility of malfunction due to electrical noise, and noise countermeasures are required, resulting in an increase in cost.

The present invention solves the above problems and provides a refrigerator in which electric wiring can be passed through a duct without increasing the airflow resistance and without being affected by electric noise. The purpose is to

[0016]

To achieve this object, a refrigerator according to the present invention is installed in a refrigerating compartment of a refrigerator including a refrigerating compartment and a freezing compartment, and has a fan motor and a compressor inside and outside the refrigerator. In the control board for driving the load of, the duct through which the cooled air is provided between the refrigerating room and the freezing room, and the electric wiring for connecting the control board and the load in the freezing room, the duct. Two grooves are provided at distant locations on the inner surface of the electric wire, and the AC electric wire and the DC electric wire of the electric wiring are divided and embedded in the two grooves to pass through the duct.

[0017]

With this configuration, the electric wiring can be passed through the duct without increasing the airflow resistance and without being affected by electric noise, so that the wiring between each load in the refrigerator and the control board can be improved. Since it can be done inside the warehouse, the number of wires inside and outside the warehouse can be significantly reduced, and the number of wires that pass through the foam insulation can be significantly reduced. Rationalization is possible. Further, since the flow resistance of the foam material due to the wiring is reduced, the heat insulation performance of the foam heat insulating material is improved and the power consumption can be reduced. In addition, it is possible to provide a refrigerator in consideration of global environment protection.

[0018]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional side view of a refrigerator according to an embodiment of the present invention. The same reference numerals are given to those already described with reference to FIG. 3, and detailed description thereof will be omitted.

In FIG. 1, 14 is a control board housed in a storage box in the refrigerating compartment 7, 17 is a freezer compartment temperature sensor, and 18 is a freezer compartment temperature sensor.
Is a defrost sensor, 19 is an automatic ice maker, 20 is a control board 14
An AC electric wire that connects the cooling fan 10 and the defrost heater 11 to each other, and a DC electric wire 21 that connects the control board 14, the freezer compartment temperature sensor 17, the defrost sensor 18, and the automatic ice maker 19 to each other. The AC electric wire 20 and the DC electric wire 21 pass through the inside of the duct 12.

FIG. 2 is a sectional perspective view of the duct 12. Two
Reference numerals 2a and 22b are two grooves provided separately on the inner surface of the duct 12, 22a is a groove for embedding the AC electric wire 20, and 22b is a groove for embedding the DC electric wire 21.

Because of the above-mentioned structure, the refrigerator compartment 7
Each load in the control board 14 and the freezer compartment 6 installed inside (cooling fan 10, defrost heater 11, automatic ice maker 19, etc.)
And electric wires for connecting the respective sensors (freezer compartment temperature sensor 17, defrost sensor 18, etc.) to the AC electric wire 20 and the DC electric wire 2
1, and each of them is embedded in the grooves 22a and 22b in the duct 12 and passed therethrough, so that the duct 12 can be electrically connected to the duct 12 without increasing the air passage resistance in the duct 12 and without being affected by electrical noise. Can pass the wiring.

As described above, according to this embodiment, the refrigerator compartment 7
A control board 14 for driving loads such as the fan motor 10 and the compressor 8 inside and outside the refrigerator, which are installed in the refrigerator compartment 7 of the refrigerator 1 including the refrigerator compartment 7 and the refrigerator compartment 6; In the duct 12 which is provided between the duct 12 and the cooled air and the electric wiring which connects the control board 14 and the load and the like in the freezer compartment 6, the duct 12 is provided at a remote location on the inner surface of the duct 12.
Since the two grooves 22a and 22b are provided and the AC electric wire 20 and the DC electric wire 21 of the electric wiring are separately embedded in the two grooves 22a and 22b and passed through the duct 12, the air passage inside the duct 12 is formed. Without increasing the resistance
In addition, since it is possible to pass electrical wiring through the duct 12 without being affected by electrical noise, wiring between each load inside the cabinet and the control board can be performed inside the cabinet, so the number of wiring inside and outside the cabinet can be significantly increased. The number of wires that pass through the foam insulation can be significantly reduced, and rationalization can be achieved by reducing the wiring sealing work and tape fixing work. Further, since the flow resistance of the foam material due to the wiring is reduced, the heat insulation performance of the foam heat insulating material is improved and the power consumption can be reduced.

[0024]

As described above, the refrigerator of the present invention is a control board which is installed in a refrigerator compartment including a refrigerator compartment and a freezer compartment and which drives loads such as a fan motor and a compressor inside and outside the refrigerator. And a duct that is provided between the refrigerating compartment and the freezing compartment and through which cooled air passes, and in the electric wiring that connects the control board and the load in the freezing compartment, etc. By providing two grooves and burying the AC electric wire and the DC electric wire of the electric wiring separately in the two grooves and passing them through the duct, the air passage resistance in the duct is not increased and the electric noise of the electric noise is reduced. Since electric wiring can be passed through the duct without being affected, wiring between each load inside the cabinet and the control board can be done inside the cabinet, so the number of wires inside and outside the cabinet is greatly reduced and foaming occurs. Significantly reduce the number of wires that run through the insulation It is possible, streamlining is possible by reducing such sealing operation and tape fixing work of wiring. Further, since the flow resistance of the foam material due to the wiring is reduced, the heat insulation performance of the foam heat insulating material is improved and the power consumption can be reduced.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional perspective view of a main part of the present invention.

FIG. 3 is a sectional side view of a conventional refrigerator.

[Explanation of symbols]

 14 Control board 12 Duct 20 AC electric wire 21 DC electric wire 22a, 22b Groove for burying electric wiring

Claims (1)

[Claims] 1. A control board installed in a refrigerating compartment of a refrigerator including a refrigerating compartment and a freezing compartment for driving loads such as a fan motor and a compressor inside and outside the compartment, and between the refrigerating compartment and the freezing compartment. In the duct, through which the cooled air is provided, and the electric wiring that connects the control board and the load in the freezer compartment, etc., two grooves are provided at separate locations on the inner surface of the duct,
A refrigerator characterized in that an AC electric wire and a DC electric wire of the electric wiring are separately embedded in the two grooves and passed through a duct.