JPH10197129A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent temperatures of both a freezing chamber and a specification changing-over chamber from becoming not less than a value of ON-set temperature by a method wherein an operation of a compressor is started when either one of a temperature sensor for a freezer chamber and a temperature sensor for a specification changing-over chamber detects a value more than an ON-setting temperature and finishes when these temperature sensors detect a value less than an OFF-setting temperature. SOLUTION: A main body of a refrigerator is provided with a specification changing- over chamber temperature sensor 24 and a freezer chamber temperature sensor 25 for use in sensing a temperature in the specification changing-over chamber and a temperature in the freezer chamber temperature. Each of resistors 26, 27 is connected in series with each of these temperature sensors 24 and 25, and its divided voltage is inputted to a microcomputer 22 and a value of the detected temperature. This microcomputer 22 starts an operation of a motor 23a for a compressor when any one of the specification changing-over chamber temperature sensor 24 and the freezer chamber temperature sensor 25 detects an ON-setting temperature and further stops the motor 23a for the compressor when both temperature sensors 24 and 25 detect the OFF-setting temperature together.

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 freezer compartment and a specification switching room capable of setting a storage temperature to a plurality of storage temperature zones including a freezing temperature zone.

[0002]

Recently, a refrigerator provided with a specification switching room capable of setting a storage temperature to a plurality of storage temperature zones including a freezing temperature zone has been considered. In this refrigerator, the operation of the compressor of the refrigeration cycle is started when the freezer compartment temperature sensor detects the ON set temperature, and is stopped when the OFF set temperature is detected. Then, in order to control the specification switching room to the temperature of the set specification, the control device is configured to open and close a damper device for supplying cool air into the specification switching room according to the temperature detected by the temperature sensor for the specification switching room. Is done.

However, in this temperature control configuration, the operation of the compressor is controlled only depending on the temperature of the freezing room. Therefore, when the compressor is operated at low temperatures such as in winter, the freezing room is turned off in a short time. The temperature is lowered to the set temperature, and the operation time of the compressor is shortened. Then, in the case where the specification switching chamber is particularly set to the refrigeration specification, there is a possibility that the compressor may stop before being cooled to the required refrigeration temperature. Further, when the temperature sensor for the freezing room or the specification switching room breaks down, the compressor is not operated, which may hinder the preservation of food.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to control the temperatures of a freezing room and a specification switching room in a good manner, and to provide a freezing room temperature sensor and a specification switching room temperature sensor. An object of the present invention is to provide a refrigerator capable of minimizing an adverse effect on food preservation even if an abnormality occurs.

[0005]

In order to achieve the above object, the present invention provides a freezing room, a specification switching room capable of setting a storage temperature to a plurality of storage temperature zones including a freezing temperature zone, A temperature sensor for a freezing room that detects the temperature in the room, a temperature sensor for a specification switching room that detects the temperature in the specification switching room, a damper device that controls supply of cool air from a cooler to the specification switching room, and the temperature. Control means for controlling the compressor and the damper device based on the temperature detected by the sensor, wherein the control means controls the operation of the compressor for the freezing chamber when the specification switching chamber is set to the freezing specification. The process starts when one of the temperature sensor and the specification switching room temperature sensor detects the temperature equal to or higher than the set temperature, and ends when both of the temperature sensors detect the temperature equal to or lower than the set temperature. The damper device is controlled to be opened when the specification switching room temperature sensor detects an ON set temperature or higher, and closed when the specification switching room temperature sensor detects an OFF set temperature or lower. If set, the operation of the compressor is started when the freezer compartment temperature sensor detects an on-set temperature and ended when the off-set temperature is detected, and the damper device is set to the specification. The switching chamber temperature sensor is opened when it detects a temperature equal to or higher than an on-set temperature, and is closed when it detects a temperature equal to or lower than an off-setting temperature.

[0006] When the specification switching room is set to the refrigeration specification, the control means controls the operation of the compressor when both the freezing room temperature sensor and the specification switching room temperature sensor exceed the ON set temperature. It starts when the temperature is detected, ends when both of the temperature sensors detect the OFF set temperature or less, and opens the damper device when the specification change room temperature sensor detects the ON set temperature or more, and turns OFF. Controlled to be closed when the temperature below the set temperature is detected, and when the specification switching room is set to a specification other than the freezing specification, the operation of the compressor, the freezing room temperature sensor detects the ON set temperature. Start and end when the off set temperature is detected, and the temperature sensor for the specification switching room detects the damper device above the on set temperature. Open time may be closed when it detects less off set temperature.

[0007] According to the above means, when the specification switching chamber is of the refrigerating type, the operation of the compressor is not stopped only when the temperature sensor for the freezing chamber only detects the OFF set temperature or less,
Since both the temperature sensor for the freezer compartment and the temperature sensor for the specification switching room are stopped only after detecting the OFF set temperature or less, there is no possibility of insufficient cooling of the specification switching room.

According to the present invention, in order to cope with abnormalities of the freezing room temperature sensor and the specification switching room temperature sensor, when one or both of the freezing room temperature sensor and the specification switching room temperature sensor are abnormal, When the specification switching chamber is set to the refrigeration specification, the control means controls the compressor to operate and controls the damper device to be opened, and the specification switching chamber is set to a specification other than the refrigeration specification. In this case, the compressor is operated and the damper device is closed.

According to the above means, a freezer compartment temperature sensor,
If an abnormality occurs in the temperature sensor for the specification change room, the compressor is operated and the damper device is opened when the specification change room is of the freezing specification, so that the frozen food in the freezing room and the specification change room is thawed. There is no. Further, when the specification switching room is a specification other than the freezing specification, the compressor is operated and the damper device is opened, so that the frozen food in the freezing room is not thawed and the food in the specification switching room is frozen. There is no fear.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
A description will be given based on FIG. In FIGS. 1 and 2 showing the entire refrigerator, the refrigerator body 1 is provided with a refrigerator room 2, an ice making room 3 arranged side by side, a specification switching room 4, a freezing room 5, and a vegetable room 6 in order from the top as a storage room. Each of the chambers 2 to 6 is opened and closed by doors 7 to 11. Since the ice making room 3 and the freezing room 5 are in the same temperature zone among the above-mentioned rooms 2 to 6, the two rooms 3 and 5 are in communication.

The cooling configuration of each of the chambers 2 to 6 will be described. A cooler chamber 13 separated from the inside of the freezing chamber 5 by a cover 12 is formed at the rear of the ice making chamber 3 and the freezing chamber 5 communicating with each other. The air cooled by the cooler 14 in the cooler room 13 is cooled by the fan device 15.
First, the air is sent to an air passage 16 formed inside the cover 12. Then, a part of the cool air blown into the air passage 16 is blown out by the outlets 17 a, 1 formed in the front surface of the cover 12.
7b is supplied to the ice making room 3 and the freezing room 5 and the remaining cool air is supplied from the air passage 16 to the refrigerator room 2 and the specification switching room 4 via a damper device 18 shown in FIG. The cool air supplied and supplied to the refrigerator compartment 3 is supplied to the vegetable compartment 6 thereafter.

The cold air supplied to the ice making compartment 3, the freezing compartment 5, and the specification switching compartment 4, and the cold air supplied from the refrigerating compartment 2 to the vegetable compartment 6 are then returned to the cooler compartment 12, where they are cooled again. It circulates in the refrigerator so that it is cooled by the vessel 13. In the damper device 18, a baffle (not shown) for controlling the supply of cool air to the refrigerator compartment 2 and a baffle 18a for controlling the supply of cool air to the specification switching room 4 are provided. Opening / closing is controlled.

Of the above-mentioned storage rooms, the specification switching room 4 constitutes a cooling room whose storage temperature (cooling temperature) can be changed in a wide range, and its storage temperature is a freezing room, a partial freezing room, a chilled room, The temperature zone can be changed to each specification of the refrigerator room and vegetable room. In order to be able to switch the specification switching room 4 to a desired specification, an operation panel 19 provided in the refrigerator compartment 2 is provided with a switching means for setting the temperature (specification) of the specification switching room 4. A variable resistor 20 is provided.

As shown in FIG. 4, a resistor 20a of the variable resistor 20 is connected in series with another resistor 21 and connected between a plus power supply + Vcc and a ground line.
A voltage corresponding to the position of the slider 20b of the variable resistor 20 is input to a microcomputer 22 as control means. And the microcomputer 22
Is the specification switching room 4 according to the input voltage from the variable resistor 20.
Detects the specifications set in. In addition, if the storage temperature zone of each specification is illustrated, for example, “−23 ° C. to -12
° C ”,“ -4.5 ° C ~
-1 ° C ”,“ more than -1 ° C to less than + 3 ° C ”in chilled room specifications,
It is “+ 3 ° C. to + 5 ° C.” for the refrigerator room specification and the vegetable room specification.

Here, the temperature control configuration of each of the chambers 2 to 6 will be described. First, the temperature of the freezing chamber 5 is controlled by controlling the operation of the compressor 23 of the refrigerating cycle. Are controlled by opening and closing the baffles of the damper device 18, respectively. Hereinafter, a temperature control configuration of the specification switching chamber 4 and the freezing chamber 5 that is directly related to the present invention will be described.

That is, the refrigerator main body 1 is provided with a specification switching room temperature sensor 24 and a freezing room temperature sensor 25 for detecting the temperatures in the specification switching room 4 and the freezing room 5. The temperature sensors 24 and 25 are composed of, for example, a negative characteristic thermistor, and as shown in FIG.
Between the cc and the ground line, resistors 26 and 27 are connected in series, and the divided voltage is input to the microcomputer 22 as a detected temperature value.

On the other hand, the motor 23a of the compressor 23 and the baffle 18a on the specification switching chamber 4 side of the damper device 18
The motor 18b for opening and closing the switch is connected to an AC power supply 28 in series with relay switches 29 and 30 as driving means. The microcomputer 22 controls the power cutoff of the relay coils 29a and 30a of the relay switches 29 and 30 based on the detected temperatures of the temperature sensors 20 and 21 and a predetermined program. Although the illustration of the fan device 18 is omitted in FIG. 4, as described above, the fan device 18 is configured to operate and stop in synchronization with the operation and stop of the compressor 23.

In this configuration, when the relay coil 29a is energized, the relay switch 29 is turned on,
The operation of the compressor 23 is performed. Further, when the relay coil 30a is energized, the relay switch 30 is turned on, thereby the motor 18b of the damper device 18 is turned on.
Is energized to open and close the baffle 18a of the specification switching chamber 4.

In this case, the baffle 18 of the damper device 18
a is opened and closed by a cam (not shown) rotated by a motor 18b, and its open / closed state is detected by a detection switch 31. The detection switch 31 is operated from off to on when the baffle 18a is fully opened, and is operated from on to off when the baffle 18a is fully opened, and an on / off signal of the detection switch 31 is input to the microcomputer 22. It has become so. Then, the microcomputer 22 compares the temperature detected by the specification switching room temperature sensor 24 with the cooling temperature set by the specification setting variable resistor 20, and maintains the specification switching room 4 at the set temperature. Damper device 18
The opening and closing of the baffle 18a is controlled.

The microcomputer 22 of this embodiment has a function of detecting an abnormality of the temperature sensors 24 and 25. Here, the abnormality of the temperature sensors 24 and 25 may be caused by disconnection of a voltage dividing circuit mainly composed of the temperature sensors 24 and 25 and the resistors 26 and 27, or by a positive power supply + V
This is caused by a short circuit with the cc or the ground line. When such an abnormality occurs, the voltage divider goes into a high impedance state,
The microcomputer 22 outputs the potential of the positive power supply + Vcc or the potential of the ground line, so that the microcomputer 22 receives the inputs from the voltage dividing circuits of the temperature sensors 24 and 25 and the resistors 26 and 27 and causes the above-described disconnection or short circuit. When the state is detected, it is determined that the sensor is abnormal (sensor abnormality determining means).

The sensor abnormality is reported to the user by, for example, a light-emitting diode 32 provided on the front surface of the door 7 of the refrigerator compartment 2 as abnormality reporting means. The light emitting diode 32 is connected in series with the transistor 35 between the positive power supply + Vcc and the ground line. When the microcomputer 22 detects a sensor abnormality,
The light emitting diode 32 is turned on by turning on the transistor 35.

Although not shown, the refrigerating compartment 2 is also provided with a temperature sensor for detecting the temperature inside the refrigerating compartment 2. The microcomputer 22 controls the damper device 18 according to the temperature detected by the refrigerating compartment temperature sensor. A baffle (not shown) for a refrigerator compartment is controlled to open and close, and the refrigerator compartment 2 is maintained at a refrigerator temperature.

Next, the operation for controlling the temperature of the specification switching room 4 and the freezing room 5 in the above configuration will be described. First, the microcomputer 22 detects the presence or absence of a sensor abnormality at a fixed cycle, performs normal control when both the temperature sensors 24 and 25 are functioning normally, and when it determines that there is a sensor abnormality, Perform emergency control in the event of an abnormality. Less than,
It will be described separately for each case.

(1) Normal control a) When the specification switching room 4 is of the freezing type At this time, the microcomputer 22 detects that either the specification switching room temperature sensor 24 or the freezing room temperature sensor 25 detects the ON set temperature. Then, the operation of the compressor 23 is started, and when both the temperature sensors 24 and 25 detect the OFF set temperature, the compressor 23 is stopped. The on-set temperature and the off-set temperature of the two temperature sensors 24 and 25 are different from each other. For example, the on-set temperature of the specification switching room temperature sensor 24 is set to -19 ° C., the off-set temperature is set to −21 ° C. The on-set temperature of the room temperature sensor 25 is set to −20 ° C., and the off-set temperature is set to −24.5 ° C.

When the temperature in one of the specification switching room 4 and the freezing room 5, for example, the freezing room 5 rises above the ON set temperature, and this is detected by the freezing room temperature sensor 25, the microcomputer 22 Starts the operation of the compressor 23 and the fan device 15. Then, cooler 1
The air cooled in 4 is directly supplied to the ice making room 3 and the freezing room 5 by the fan device 15, and both the rooms 3 and 5 are cooled. During operation of the compressor 23, the specification switching room 4
When the internal temperature becomes equal to or higher than the set ON temperature, and the temperature is detected by the specification switching room temperature sensor 24, the microcomputer 22 opens the baffle 18a of the damper device 18. Then, the cool air supplied into the air passage 16 by the fan device 15 is supplied into the specification switching room 4 through the damper device 18 to cool the room 4.

If the temperature of the specification switching room 4 of the specification switching room 4 and the freezing room 5 first rises to the ON set temperature or higher, the microcomputer 22 detects the temperature of the specification switching room temperature sensor 24. The operation of the compressor 23 is started based on the detected temperature, and the baffle 18a of the damper device 18 is opened. Then, the air cooled by the cooler 14 is directly supplied to the ice making room 3 and the freezing room 5 by the fan device 15 and also supplied to the specification switching room 4 via the damper device 18. In this case, cold air is supplied to the freezing compartment 5 under the condition that the temperature is equal to or lower than the set ON temperature. However, merely cooling the frozen and stored food further adversely affects the frozen food. There is no danger.

When both of the specification switching room 4 and the freezing room 5 become lower than the set off temperature by the supply of the cool air as described above, the microcomputer 22 stops the operation of the compressor 23 and the fan device 15. When any one of the specification switching room 4 and the freezing room 5 becomes higher than the set ON temperature due to this operation stop, the microcomputer 22 starts the operation of the compressor 23 and the fan device 15 again, and The operation of the compressor 23 and the fan device 15 is stopped when both of them become lower than the OFF set temperature. At this time, if the specification switching room 4 is cooled to the off-set temperature or lower at a point earlier than the freezing room 5, the microcomputer 22 causes the damper device 1
The closing operation of the baffle 18a of 8 is stopped, and the supply of cool air to the specification switching chamber 4 is stopped.

As described above, the temperature sensor 24 for the specification switching room
When one of the freezer compartment temperature sensors 25 detects the ON set temperature or higher, the operation of the compressor 23 is started.
Any of the temperatures inside can be maintained below the ON set temperature.

Further, since the compressor 23 is stopped when both the temperature sensors 24 and 25 detect the OFF set temperature or less, the specification switching chamber 4 is not cooled down to the required refrigerating temperature. Compressor 2
3 can be prevented from being stopped.

B) When the specification switching chamber 4 has a specification other than the freezing specification At this time, the operation of the compressor 23 is controlled in accordance with the temperature detected by the freezing room temperature sensor 25. Further, the ON set temperature and the OFF set temperature of the specification switching room temperature sensor 24 are set to temperatures according to the specification set by the variable resistor 20, and the baffle 18 a of the damper device 18 is connected to the specification switching room temperature sensor 24. Open / close control is performed according to the ON set temperature and the OFF set temperature.

That is, when the temperature in the freezer compartment 5 rises above the ON set temperature and this is detected by the freezer compartment temperature sensor 25, the microcomputer 22
Then, the operation of the fan device 15 is started. This allows
Cold air is supplied to the ice making room 3 and the freezing room 5 in the same manner as described above. At this time, when the specification switch room temperature sensor 24 detects the ON set temperature or higher, the microcomputer 22 opens the damper device 18 to supply cool air into the specification switch room 4 through the damper device 18.

When the specification switching chamber 4 is cooled by the supply of the cool air until the temperature falls below the set off temperature, the microcomputer 22 closes the baffle 18a of the damper device 18 and stops the supply of the cool air to the specification switching chamber 4. Let it. When the freezer compartment 5 is cooled down to the off set temperature or lower, the microcomputer 22 stops the operation of the compressor 23 and the fan device 15.

By operating and stopping the compressor 23 and the fan device 15, the temperatures of the ice making chamber 3 and the freezing chamber 5 are controlled so as to maintain the freezing temperature, and the specification is made by opening and closing the baffle 18a of the damper device 18. The switching chamber 4 is controlled so as to maintain the set specification temperature.

(2) Emergency control when sensor is abnormal When the microcomputer 22 determines that the sensor is abnormal, the microcomputer 22 turns on the light-emitting diode 32 to emit any one of the temperature sensor 24 for the specification switching room and the temperature sensor 25 for the freezing room.
Alternatively, the user is notified that an abnormality has occurred in both and normal control cannot be performed. The user uses the light emitting diode 32
The lamp lights to indicate an abnormality and request a dealer to repair it. The microcomputer 22 performs the following emergency control in addition to the above-described abnormality notification.

That is, when it is determined that the sensor is abnormal, the microcomputer 22 determines whether or not the specification switching room 4 is set to the freezer compartment specification. , 25, the compressor 22 and the fan device 15 are operated, and the baffle 18a of the damper device 18 is opened. Thereby, cold air is supplied to the ice making room 3, the specification switching room 4, and the freezing room 5, and these rooms 3 to 5 are maintained at the freezing temperature.

On the other hand, if the specification switching chamber 4 is set to a specification other than the freezer specification, the microcomputer 22
Starts the operation of the compressor 23 and the fan device 15 irrespective of the temperature detected by the temperature sensors 24 and 25 and closes the baffle 18 a of the damper device 18. Thereby, the ice making room 3 and the freezing room 5 are maintained at the freezing temperature, and the occurrence of the problem of food freezing due to the specification switching room 4 being at the freezing temperature is prevented.

This emergency operation is an operation within a relatively short time until the serviceman completes repairs such as replacement of the temperature sensor and the like, and the occurrence of a serious problem that the frozen food can be melted is prevented by this operation. Things. When the specification switching room 4 is other than the frozen type, there is almost no case where the temperature rises to the normal temperature and the food is damaged in a relatively short time until the repair is completed by the serviceman. This is because it is considered that it is better for the user to prevent the problem of freezing the food by supplying cold air inside.

In the above embodiment, when the specification switching chamber 4 is set to the freezer compartment specification, both temperature sensors 2
The configuration is such that the operation of the compressor 23 is started when any one of the temperatures 4 and 25 detects the ON set temperature or higher. According to this, the following is expected.

First, the specification switching room 4 and the freezing room 5 have the following properties. That is, the cooler chamber 13 is formed at the back of the freezer compartment 5 so that the cooler 14 is easily cooled by the cooler 14 and the cool air immediately after being cooled by the cooler 14 is directly supplied. easy. On the other hand, since the freezer compartment 5 has a large internal volume and a large area on the left and right side walls in contact with the outside air, there are many heat leaks and the temperature easily rises.

On the other hand, the specification switching room 4 is
Since the cold air in the inside is received through the air passage 16 and the damper device 18 formed in the cover 12, it is difficult to obtain a large air volume due to the passage resistance therebetween, and the temperature of blowing the cold air is higher than that of the freezing compartment 5. Therefore, the specification switching chamber 4 is hardly cooled. On the other hand,
The specification switching room 4 is in contact with the refrigeration room 2, the freezing room 5 and the ice making room 3 on both the upper and lower sides and on the left side, and only the right side wall is in contact with the outside air. Small, resulting in relatively little heat leakage,
The temperature does not easily rise.

The specification switching room 4 and the freezing room 5 have the above-described properties. Therefore, when the specification switching chamber 4 is set to the refrigeration specification, as described above, the temperature sensors 2
When the compressor 23 is started to operate when any one of the temperature detectors 4 and 25 detects the temperature equal to or higher than the ON set temperature, heat leakage occurs after the specification switching room 4 and the freezing room 5 are cooled to the OFF set temperature or lower. Since the freezer compartment 5 having a larger amount first rises above the ON set temperature, the compressor 23 is normally operated based on the temperature in the freezer compartment 5, and in addition to this, the compressor 23 The operation of the compressor 23 is performed in such a manner that the temperature of the specification partition chamber 4 rises above the on-set temperature in the process of increasing the temperature of the freezing room 5 from the state below the off-set temperature due to the stop of the compressor 23, and so on. Is expected to occur frequently.

In order to prevent such a situation from occurring, as another embodiment of the present invention, both the specification switching room temperature sensor 24 and the freezing room temperature sensor 25 detect the ON temperature or higher. At this time, it is preferable that the operation of the compressor 23 is started.

As a result, as shown in FIG. 5, the freezing compartment 5 having a large amount of heat leak is quickly brought to the ON set temperature (−20).
° C) or more (at time t1 in FIG. 5),
The compressor 23 is not operated because the specification switching chamber 4 is not at or above the set ON temperature (−19 ° C.). Thereafter, when the temperature of the specification switching chamber 4 becomes equal to or higher than the set ON temperature (time t2 in FIG. 5), the compressor 23 is operated for the first time. At this time, the temperature in the freezer compartment 5 is higher than the ON set temperature, but the temperature in the freezer compartment 5 is maintained below the minimum necessary temperature for freezing. The problem described above does not occur. Then, when both the specification switching room temperature sensor 24 and the freezing room temperature sensor 25 are cooled below the OFF set temperature (time t3 in FIG. 5), the compressor 23 is stopped.

As described above, according to the present embodiment, the operation of the compressor 23 is started when both of the temperature sensors 24 and 25 detect the ON set temperature or higher. It can be prevented from being performed unnecessarily. Moreover, the compressor 23 is stopped when both the temperature sensors 24 and 25 detect the temperature lower than the set ON temperature, so that the specification switching room 4 or the freezing room 5 is not cooled below the OFF set temperature. The malfunction that the operation of the compressor 23 is stopped can be prevented.

[0045]

As described above, according to the present invention, the following effects can be obtained. According to the first aspect of the present invention, when the specification switching room is set to the refrigeration specification, one of the freezing room temperature sensor and the specification switching room temperature sensor detects the operation of the compressor at a temperature higher than the ON set temperature. The process starts when both of the temperature sensors detect the temperature below the OFF set temperature, so that the temperatures of the freezing room and the specification switching room can be controlled without exceeding the ON set temperature.

According to the second aspect of the present invention, when the specification switching room is set to the refrigeration specification, the operation of the compressor is stopped when both the freezing room temperature sensor and the specification switching room temperature sensor detect the ON set temperature or higher. So we started
It is possible to prevent the operating rate of the compressor from becoming too high.

According to the third aspect of the present invention, it is possible to prevent a problem that the frozen food is thawed or the food that must not be frozen is frozen when the temperature sensor is abnormal.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional side view.

FIG. 3 is a longitudinal sectional side view of a specification switching room portion.

FIG. 4 is a block diagram of an electric circuit.

FIG. 5 is a diagram showing changes in detected temperatures of both temperature sensors for explaining another embodiment of the present invention.

[Explanation of symbols]

In the figure, 4 is a specification switching room, 5 is a freezing room, 14 is a cooler, 1
8 is a damper device, 20 is a temperature sensor for a specification switching room, 25
Is a freezer temperature sensor, 22 is a microcomputer,
23 is a compressor.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasuyuki Sekiguchi 1-6 Ota Toshiba-cho, Ibaraki-shi, Osaka Inside the Toshiba Osaka Plant

Claims (3)

[Claims] 1. A freezer compartment, a specification switching room capable of setting a storage temperature to a plurality of storage temperature zones including a freezing temperature zone, a freezer compartment temperature sensor for detecting a temperature in the freezer compartment, and the specification switching chamber. A temperature sensor for the specification switching room that detects the temperature of the
A damper device for controlling supply of cool air from a cooler to the specification switching room; and a control unit for controlling the compressor and the damper device based on a temperature detected by the temperature sensor, wherein the control unit includes: Is set to the refrigeration specification, the operation of the compressor is started when one of the freezing room temperature sensor and the specification switching room temperature sensor detects an ON set temperature or higher, and both of these temperature sensors Are terminated when both of them detect the temperature below the OFF set temperature, and the damper device is opened when the temperature sensor for the specification switching room detects the temperature above the ON set temperature and closed when the temperature sensor below the OFF set temperature is detected. When the specification switching chamber is set to a specification other than the refrigeration specification, the operation of the compressor is turned on by the freezing room temperature sensor. In addition to starting when detecting the temperature and ending when detecting the OFF set temperature, the damper device is opened when the temperature sensor for the specification switching room detects the ON set temperature or higher, and the damper device is set to the OFF set temperature or lower. Refrigerator characterized by closing when detected. 2. A freezing room, a specification switching room capable of setting a storage temperature to a plurality of storage temperature zones including a freezing temperature zone, a freezing room temperature sensor for detecting a temperature in the freezing room, and the specification switching room. A temperature sensor for the specification switching room that detects the temperature of the
A damper device for controlling supply of cool air from a cooler to the specification switching room; and a control unit for controlling the compressor and the damper device based on a temperature detected by the temperature sensor, wherein the control unit includes: Is set to the refrigeration specification, the operation of the compressor is started when both the temperature sensor for the freezing room and the temperature sensor for the specification switching room detect the ON set temperature or more, and both of the temperature sensors are set to OFF. The process is terminated when the temperature is detected to be equal to or less than the temperature, and the damper device is controlled to be opened when the specification switching room temperature sensor detects the temperature equal to or higher than the ON set temperature and closed when the temperature sensor detects the temperature equal to or lower than the OFF set temperature, When the specification switching room is set to a specification other than the freezing specification, the operation of the compressor is detected, and the freezing room temperature sensor detects an ON set temperature. In addition to starting when the off set temperature is detected and ending when the off set temperature is detected, the damper device is opened when the specification switching room temperature sensor detects the on set temperature or higher, and detects the off set temperature or lower. A refrigerator characterized in that it is closed when it is closed. 3. When at least one of the temperature sensor for the freezing room and the temperature sensor for the specification switching room or both of them is abnormal, the control means: when the specification switching room is set to the freezing specification, Is operated, and the damper device is controlled to be opened. When the specification switching chamber is set to a specification other than the refrigeration specification, the compressor is operated and the damper device is controlled to be closed. The refrigerator according to claim 1 or 2, wherein: