JPH10292970A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cool a select compartment to the temperature of a deep temperature band lower than that of a freezing compartment temperature band by arranging a select compartment that can cool it from the temperature of a refrigerating temperature band to the temperature of a deep temperature band lower than that of freezing compartment temperature having an exclusive select compartment damper controlling chilled air intake and a chilled air flow path. SOLUTION: A refrigerating compartment 1 is at a top row, a ice storing compartment is on the left side of a next row, a select compartment 3 that can change the setting temperature variably from the refrigerating temperature band of (3 to 6 deg.C) to the deep temperature band of (-25 to -30 deg.C) lower than the freezing temperature band (-8 to -20 deg.C) is on the right side of the next row, a freezing compartment is at next row after the next and a vegetable compartment is at a bottom row. Chilled air cooled by an evaporator 6 is transferred to a freezing compartment 4 by a inside compartment cooling fan 7. A part of chilled air is conducted to the select compartment 3, the-refrigerating room 1 and the vegetable compartment 5 through a select compartment damper 8 and a refrigerating compartment damper 9. The select compartment damper 8 is controlled based on the detected data from the temperature sensor to cool the select compartment 3 to set up temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION In the present invention, the set temperature is varied from the temperature range of the refrigerator compartment to the temperature range (for example, -25 to -30.degree. C.) lower than the temperature range of the freezer compartment (-18 to -20.degree. C.). Refrigerator with compartment that can be

[0002]

2. Description of the Related Art Now, a refrigerator compartment is provided at the top, an ice maker and a dedicated compartment for storing ice are provided on the left side of the second stage from the top, and an arbitrary temperature from the refrigerator compartment temperature zone to the freezer compartment temperature zone is provided on the second stage right side. A refrigerator having a configuration in which a section can be set, a freezer compartment in the third tier, and a vegetable compartment in the lowermost tier will be described. The flow of cold air in the refrigerator in the refrigerator having such a configuration is as follows. The cool air cooled by the evaporator is sent out to the freezing room by the cooling fan in the refrigerator. Cold air flows through the refrigerator compartment and the temperature-variable section only when the refrigerator compartment damper or the temperature-variable section damper is open. The temperature of the freezer is controlled by measuring the internal temperature with a freezer sensor installed in the freezer. If the temperature is higher than the set upper limit temperature, the compressor is started and the cooling fan is turned on to send cool air into the freezer. When the temperature falls below the temperature, the compressor and the cooling fan in the refrigerator are stopped to maintain a certain temperature with a certain width. When the temperature setting of a section in which the set temperature can be varied is in the freezer compartment temperature zone, the compressor and the internal cooling fan may be operated at the temperature of the section.

A section in which the set temperature can be controlled from the refrigerator compartment temperature zone to the freezer compartment temperature zone has a dedicated temperature-variable compartment damper, a temperature sensor, and a duct. The control of the section will be described separately for the case where it is set to the refrigerator compartment temperature and for the case where it is set to the freezer compartment temperature. When the temperature is set to the refrigerator compartment, the control is the same as that of the refrigerator compartment. When the temperature is set to the freezer compartment temperature, the temperature is further divided into two. When the temperature in the refrigerator is high, the compressor and the cooling fan in the refrigerator are operated and the temperature variable section damper is opened to introduce cool air regardless of the temperature of the freezing room. Compressor at the request of the freezer,
When the internal cooling fan is operated, if the temperature of the section is slightly high, the temperature variable section damper opens and cool air is introduced. When the internal temperature decreases or when the compressor and internal cooling fan stop, the temperature-variable section damper is closed. Temperature control of the refrigerator compartment measures the temperature inside the refrigerator by the refrigerator sensor installed in the refrigerator compartment, and when the refrigerating cycle is operating and higher than the set temperature, the refrigerator compartment damper opens and cool air is introduced through the duct from the evaporator and frozen. The refrigerating compartment damper is closed when the cycle is stopped or below the set temperature. for that reason,
There is no relation to the temperature variable section damper that controls the cool air to the section where the set temperature can be changed, and the refrigerator compartment damper and the temperature variable section damper may be opened at the same time.

Here, attention is paid to the air temperature upstream and downstream of the evaporator. For example, consider a case in which a mode is set in which three rooms of a freezing room, a refrigerator room, and a section having a variable set temperature are simultaneously cooled. The temperature of the cool air returning from the refrigerator compartment (vegetable compartment) to the evaporator is a positive temperature higher than 0 ° C. The cool air returning from the three compartments is mixed upstream of the evaporator, but at a higher temperature than when cooling only the freezer compartment. In that case, the temperature of the cold air blown out from the evaporator also becomes high, and it has been difficult to efficiently lower the temperature of the freezing room from the current level. Further, in the case of using a variable capacity compressor such as an inverter and reducing the refrigerating capacity in order to reduce the power consumption, the evaporation temperature of the refrigerant in the evaporator increases, which is more difficult.

[0005]

By the way, depending on the type of food, if it is cooled to a temperature lower than the freezing room temperature range,
Sometimes the preservation of the food is even better. However, in the conventional refrigerator, the refrigerating cycle is controlled by the temperature in the freezer compartment, and the refrigerating compartment and the section having the variable set temperature are in the refrigerator compartment and the compartment having the variable set temperature during operation of the compressor. When the temperature measured by the temperature sensor is higher than the set temperature, the refrigerating compartment damper and the variable temperature compartment damper are opened to introduce cool air. During the cooling of the refrigerator compartment,
Since the temperature of the refrigerating compartment is a plus temperature, the temperature of the cool air returning to the evaporator increases, and the temperature of the cool air blown out from the evaporator also increases. For this reason, it was difficult to simultaneously cool the compartment having a variable set temperature to a temperature lower than the freezer compartment temperature zone at the same time as cooling the refrigerator compartment.

[0006] The present invention has been made in view of the above,
First, the select room can be surely and efficiently cooled to a deep temperature range lower than the freezer room temperature range, and secondly, power can be saved by preventing heat leakage and appropriately preventing dew condensation according to operating conditions. It is intended to provide a refrigerator that can be used.

[0007]

Means for Solving the Problems To solve the above-mentioned problems, the invention according to claim 1 is a refrigerator for circulating cold air cooled by an evaporator in a refrigerator by a cooling fan in the refrigerator. In addition to the room, at least a dedicated flow path for the cool air and a select room damper that controls the introduction of the cool air and has a select room that is cooled to an arbitrary temperature from the refrigerator room temperature zone to a temperature zone lower than the freezer room temperature zone. It is the gist to have. With this configuration, the flow rate of the cool air introduced from the dedicated cool air flow path is controlled by the select room damper, and the select room can be set to a wide temperature range from the refrigerator temperature range to the deep temperature range lower than the freezer temperature range. Becomes

According to a second aspect of the present invention, in the refrigerator according to the first aspect, when the temperature of the select room is set to a lower temperature range than the freezer temperature range during the operation of the compressor, the refrigerator is cooled. The gist is such that the cool air to the refrigerator compartment is shut off, the select room damper is opened, and cool air is introduced into the select room. With this configuration,
When the select room damper is opened, the temperature of the cool air returning to the evaporator decreases by shutting off the introduction of cool air to the refrigerator compartment.
Low-temperature cold air is introduced into the select room, and the select room is cooled to a temperature in the deep temperature zone.

According to a third aspect of the present invention, in the refrigerator according to the second aspect, when cooling air is flown into the select room and cooled to a temperature range lower than the freezer room temperature range, the unit capacity per unit volume to the select room is reduced. The gist is that the flow rate of the cool air per unit time is made larger than the flow rate of the cool air per unit volume and per unit time to the freezer. With this configuration, it is possible to cool the select room to a temperature in the deep temperature zone in a short time even if the time for flowing cool air to the select room is shortened by the time for flowing cool air to the refrigerator compartment.

According to a fourth aspect of the present invention, in the refrigerator according to the second aspect, when the temperature of the select room is set to a temperature range lower than the freezing room temperature range and cool air flows through the select room, the compressor is provided. The gist of the present invention is to increase the refrigerating capacity of the apparatus. With this configuration, the refrigerating capacity of the compressor increases, so that the refrigerant evaporation temperature in the evaporator decreases, and low-temperature cool air is introduced into the select chamber.

According to a fifth aspect of the present invention, in the refrigerator according to the second aspect, when the temperature of the select room is set to a temperature zone lower than the freezing room temperature zone and cool air flows through the select room, the condenser is provided. The gist is that the rotation speed of the cooling fan is increased. With this configuration, the heat radiation of the refrigeration cycle is improved, so that the refrigerant evaporation temperature in the evaporator decreases, and low-temperature cool air is introduced into the select chamber.

According to a sixth aspect of the present invention, in the refrigerator according to the second aspect, when the temperature of the select room is set to a temperature zone lower than the freezer compartment temperature zone and the cool air flows through the select room, The gist is that the number of rotations of the internal cooling fan is reduced. With this configuration, the flow rate of the cool air is reduced, but the temperature of the cool air blown out by the evaporator is lowered, and the cool cool air is introduced into the select chamber.

According to a seventh aspect of the present invention, in the refrigerator according to the second aspect, when the temperature of the select compartment is set to a temperature zone lower than the freezer compartment temperature zone, the temperature of the freezer compartment becomes higher than the upper limit. In a case where the cooling operation is started at a high temperature, the temperature of the refrigerator compartment and the temperature of the select compartment are monitored, and the compartments having temperatures close to their respective upper limits are preferentially cooled. . With this configuration, it is determined which of the two is to be preferentially cooled based on the monitoring results of the refrigerator compartment temperature and the select compartment temperature.

According to an eighth aspect of the present invention, in the refrigerator according to the second aspect, the temperature of the select room is set in a temperature range lower than the freezer temperature range, and the temperature in the refrigerator of the select room is reduced. The gist is configured to perform the opening / closing control of the refrigerator compartment damper during the cooling operation to the temperature zone higher than the temperature zone and lower than the freezer compartment temperature zone regardless of the operation state of the select room damper. . With this configuration, even if the temperature setting of the select room is in the deep temperature zone,
When the temperature of the select room is high, by introducing cold air into both the compartments of the select room and the refrigerator room, it is possible to make the steady control state sooner.

According to a ninth aspect of the present invention, in the refrigerator according to the second aspect, when the select room is set to the quick freezing mode, the compressor and the compressor are kept for a fixed time regardless of the internal temperature of the select room. Operate a cooling fan in the refrigerator, open the select room damper and introduce cool air into the select room, and control the opening and closing of the refrigerator compartment damper by the temperature in the refrigerator room regardless of the operation state of the select room damper. The gist of the invention is that it is configured to With this configuration, when the select room is set to the quick freezing mode, it is possible to cool the food quickly by continuously cooling the select room. On the other hand, temperature control is suppressed by independently controlling the refrigerator compartment.

According to a tenth aspect of the present invention, in the refrigerator according to the first aspect, an input of a dew-prevention heater around the door of the select room is input in accordance with a temperature difference between an inside temperature of the select room and an outside air temperature. The gist of the invention is that it is configured to be controlled. With this configuration, it is possible to appropriately prevent dew condensation according to the operating conditions without unnecessary increase in power consumption.

According to an eleventh aspect of the present invention, in the refrigerator according to the first aspect, an input of a temperature compensating heater installed on an opposite surface of the refrigerating room adjacent to the select room is set according to a set temperature of the select room. The gist of the invention is that it is configured to change. With this configuration, unnecessary power consumption is prevented, and partial deterioration of the temperature distribution in the refrigerator compartment is prevented.

According to a twelfth aspect of the present invention, in the refrigerator according to the first aspect, the heat insulation performance around the select room is configured to be higher than the heat insulation performance around the freezer room. With this configuration, heat leakage when the select room is cooled to a temperature in the deep temperature zone or the like is prevented.

[0019]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. First, the configuration of the refrigerator will be described with reference to FIG. In the figure, the refrigerator compartment 1 is at the top from the top, the compartment 2 for storing ice is on the left of the next stage, and the set temperature is on the right from the refrigerator compartment temperature zone (3 to 6 ° C.) to the freezer compartment temperature zone (−8). ~ -20 ° C) lower temperature zone (-25-
A select room (arbitrary temperature section) 3 which can be changed to an arbitrary temperature within a range up to 30 ° C.), a freezing room 4 at the next stage, and a vegetable room 5 at the lowest stage. That is, in a refrigerator for home use, the freezing room temperature zone is used in the above-mentioned (-8 to -20 ° C.) defined by the JIS standard. It becomes possible to cool to an arbitrary temperature in a range up to a deep temperature zone (−25 to −30 ° C.) lower by 5 ° C. or more than the lower limit of the freezer compartment temperature zone (−8 to −20 ° C.). ing.
FIG. 2 shows a model of the flow of cool air in the refrigerator.
The cool air cooled by the evaporator 6 is sent out to the freezing room 4 by the cooling fan 7 in the refrigerator. Part of the cool air passes through the select room damper 8 and the refrigeration room damper 9, and is introduced into the select room 3, the refrigeration room 1, and the vegetable room 5, respectively. Compressor, internal cooling fan 7, select room damper 8, refrigerating room damper 9
Is controlled to cool each section to the respective set temperature based on the detection information of the temperature sensor in each room. The temperature of the select room 3 can be arbitrarily set to a temperature between the refrigerator compartment temperature zone and a deep temperature zone (-25 to -30 ° C) lower than the freezer compartment temperature zone.

Next, each control method of the refrigerator configured as described above will be described in order.

The first control method will be described with reference to the flowchart of FIG. This control method is for the case where the temperature of the select room 3 is cooled below the freezing room temperature zone (−8 to −20 ° C.). Here, the temperature lower than the freezing room temperature zone is a temperature (−2 ° C.) lower than the lower limit value (−20 ° C.) of the freezing room temperature zone by 5 ° C. or more.
5 ° C) or lower. As a first stage, the temperature of the freezer compartment 4 is measured (step 101) and compared with a set value. When the temperature Tf of the freezing compartment 4 exceeds the upper limit temperature Tf _U (Yes in step 102), the compressor, the internal cooling fan 7 is operated (step 103). Attention is paid to the temperature of the select room 3 as the second stage. At slightly higher temperature condition that the temperature Ts of the room is higher than the set value Ts _U2 (Yes in step 104), the select chamber damper 8 for introducing cold air is opened in the room (step 10
5). If the temperature is not high (No in step 104), the process proceeds to a step of comparing the temperature of the refrigerator compartment 1. The select chamber damper 8 held closed to become the lower limit value Ts _L in the third stage (Yes in step 106, step 107). Similarly, if the temperature Tr of the refrigerator compartment 1 is higher than the upper limit Tr _U , the refrigerator compartment damper 9 is opened (Yes in Step 108,
Step 109), and is closed when the lower limit Tr _L is reached (Yes in Step 110, Step 111). next,
During the cooling of the refrigerator compartment 1 again, the temperature of the select compartment 3 may increase because the temperature of the select compartment 3 may increase. If it is higher than the set value Ts _U2 (Ye in step 112)
s) Return to the mode of opening the select room damper 8 again. If the temperature is low (No in step 112), the temperature T of the freezer compartment 4
f. If f is higher than the lower limit Tf _L (step 1
13 No), the process returns to the second stage. If it is low (Yes in step 113), the compressor and the in-compartment cooling fan 7 are stopped (step 114), and the process returns to the first stage. When the temperature Tf of the freezing chamber 4 in the first stage is lower than the upper limit temperature Tf _U (No in step 102), then compares the temperature Ts of the select chamber 3, the temperature Ts is Ts _U1 (Ts _U1> Ts _U2) If it is higher (Yes in step 115), the compressor and the internal cooling fan 7 are operated, the select chamber damper 8 is opened (step 116), and the process proceeds to the third stage of the main routine. If the temperature Ts of the select room 3 is also lower than the upper limit (No in Step 115), the process returns to the beginning.

In the present control method, when the select room damper 8 for introducing cool air to the select room 3 is opened, the refrigerating room damper 9 for introducing cool air to the refrigerating room 1 is closed, and as a result, the operation returns to the evaporator 6. The temperature of the cool air is reduced, and the temperature of the cool air blown out through the evaporator 6 can be reduced. In the example of this control, the control is such that the refrigeration cycle does not stop unless all three rooms 1, 3, 4 are cooled. However, the condition can be removed for the refrigeration room 1; When the two chambers 3 and 4 cool down, the refrigerating cycle can be stopped and the refrigerating chamber damper 9 can be closed. While the temperature of the select room 3 is not monitored during the cooling of the refrigerator compartment 1, it is also possible to monitor the temperature of the select room 3 during the cooling of the refrigerator room 1 and to switch the select room 3 to the cooling mode when the temperature becomes high.

The second control method will be described. In the freezing room 4, the cool air circulates in the freezing room 4 while the compressor is operated and the in-compartment cooling fan 7 is operated. On the other hand, when the temperature of the select room 3 is set to be equal to or lower than the freezing room temperature zone, the time for flowing the cool air to the select room 3 is shorter than the time for flowing the cool air to the refrigerator compartment 1. Requires cooling. Therefore, the cool air to the freezer compartment 4 is calculated from the flow rate of the cool air per unit time per volume of the freezer compartment 4.
It is necessary to increase the flow rate to the select room 3. A method of reducing the pressure loss of the flow path to the select chamber 3 may be considered. In the case where the select room 3 is cooled, it can be realized by a method of reducing the flow rate of the cool air to the freezing room 4. Therefore, it can be realized by providing a damper in a part or the whole of the flow path to the freezing room 4 to reduce or cut off the flow of the cool air.

The third control method will be described. Select room 3
Is cooled to a temperature lower than the freezing room temperature range, it is necessary to lower the temperature of the cool air blown out to the select room 3. Therefore, when flowing the cool air into the select chamber 3, the refrigeration capacity of the compressor is increased to lower the refrigerant evaporation temperature in the evaporator 6, so that the blown air temperature can be lowered.

The fourth control method will be described. Select room 3
Is cooled to a temperature lower than the freezing room temperature range, it is necessary to lower the temperature of the cool air blown out to the select room 3. Therefore, when flowing cool air into the select chamber 3, the rotation speed of the cooling fan of the condenser is increased to improve the heat radiation of the refrigeration cycle, so that the refrigerant evaporation temperature in the evaporator 6 can be lowered. The effect is great if used together when increasing the refrigerating capacity of the compressor described in the third control method.

The fifth control method will be described. When the number of revolutions of the internal cooling fan 7 is reduced to cool the select room 3 to a temperature lower than the freezing room temperature zone, it is necessary to lower the temperature of the cool air blown out to the select room 3, and to the select room 3. When flowing cool air, the number of revolutions of the internal cooling fan 7 is reduced. By reducing the air volume, the flow rate of the blown air is reduced, but the temperature can be reduced.

The sixth control method will be described. Select room 3
When the temperature of the freezer compartment is lower than the freezer compartment temperature zone, the temperature of the freezer compartment 4 becomes higher than the set temperature, and the compressor and the internal cooling fan 7 are operated. Check the temperature of room 3. Therefore, if the temperature Ts of the select room 3 is Ts _U2 <Ts <Ts _U1 , the select room damper 8 is opened and the state of the refrigeration room 1 is ignored. The inside temperature of the select room 3 and the inside temperature of the refrigeration room 1 are measured, a section requiring more cooling is selected, and the section is preferentially cooled to prevent the temperature from deviating more than the allowable temperature range. . In addition, the temperature of both rooms is constantly monitored, and when the temperature exceeds the upper limit during cooling of another room, the mode is switched to a mode of cooling the compartment.

The seventh control method will be described. In the stable state, when the temperature of the select room 3 is set to a temperature equal to or lower than the freezing room temperature zone, the select room 3 and the refrigerator compartment 1 are exclusively cooled. However, in a transient state, for example, when the power is turned on, exclusively for cooling to a temperature lower than the freezer compartment temperature zone, such as immediately after changing the temperature setting from the refrigerator compartment temperature zone to a temperature lower than the freezer compartment temperature zone. Even when the cooling mode is not required, there is a problem that the cooling of one room is not completed until the cooling of the other room is completed. for that reason,
Even if the temperature setting of the select room 3 is lower than the freezer room temperature zone, if the temperature measured by the internal temperature sensor is higher than the freezer room temperature setting, both the select room damper 8 and the refrigerator compartment damper 9 , And by introducing cold air to both compartments, a steady state can be achieved sooner. When the temperature is cooled below the freezing room temperature zone, the mode returns to the normal control mode.

An eighth control method will be described. When freezing food, it is necessary to pass through a temperature zone in which moisture freezes as quickly as possible. Therefore, it is necessary to increase the ability to cool food. When the user presses the quick freezing button at the same time as the food is put into the select room 3, the quick freezing mode is set. In the quick freezing mode, it is necessary to remove heat more quickly than the target food, so control is performed to maximize the amount of heat exchange between the food and cold air, and the refrigeration capacity of the compressor, the fan for the condenser cooler, The rotation speed of the cooling fan 7 in the refrigerator is increased. Since it is prioritized to cool the food, even if the temperature is set low and the refrigerator is exclusively cooled in a stable state, the condition is such that the select room 3 is continuously cooled independently of the refrigerator. Cools down faster.

The ninth control method will be described. Select room 3
The temperature difference between the inside temperature and the outside temperature greatly changes depending on the set temperature and the outside temperature. If the heating means to prevent dew around the door is set so as not to cause problems due to dew condensation even when the temperature difference is the largest, if the temperature difference is small, extra heat load will be applied to the inside of the refrigerator, and power consumption will be reduced. Increase unnecessarily. Therefore, by controlling the input of the heater for preventing dew condensation around the door from the temperature in the refrigerator and the ambient temperature in which the refrigerator is installed, unnecessary power consumption is not increased and appropriate dew condensation is prevented depending on the operating conditions. be able to.

The tenth control method will be described. When the temperature difference between the select room 3 and the adjacent refrigerator room 1 is large, the refrigerator room 1 is cooled through the heat insulating wall between both compartments. Therefore, a heater for temperature compensation is installed on the wall surface of the refrigerator compartment 1 facing the select compartment 3, and the input of the heater for temperature compensation is controlled based on the temperature difference between the select compartment 3 and the refrigerator compartment 1, so that the refrigerator compartment is controlled. 1 can be maintained at a desired temperature.

The eleventh control method will be described. The temperature difference between the inside temperature of the select room 3 and the outside air temperature may be larger than the temperature difference between the inside temperature of the freezing room 4 and the outside air temperature. Therefore, increasing the heat insulating performance of the select room 3 can suppress an increase in heat leakage. For example, a method of making the heat insulating material a vacuum heat insulating material or increasing the heat insulating thickness can be considered.

[0033]

As described above, according to the first aspect of the present invention, in addition to the freezing room and the refrigerating room, at least a dedicated cold air flow path and a select room damper for controlling the introduction of the cold air are provided. Since the select room is cooled to an arbitrary temperature from the refrigerator room temperature range to the lower temperature range than the freezer room temperature range, the flow rate of the cool air introduced from the dedicated cool air flow path is controlled by the select room damper, The select room can be efficiently cooled to a deep temperature zone lower than the freezer room temperature zone.

According to the second aspect of the present invention, when the temperature of the select room is set to a lower temperature range than the freezer room temperature range during the operation of the compressor, the cool air to the refrigerating room is cooled. Shut off, open the select room damper and introduce cool air to the select room, low-temperature cool air is introduced into the select room, and the select room is efficiently moved to a deep temperature zone lower than the freezer room temperature zone. Can be cooled.

According to the third aspect of the present invention, when cooling air is flown into the select room and cooled to a temperature zone lower than the freezer room temperature zone, the cool air per unit volume and unit time is supplied to the select room. Since the flow rate is configured to be larger than the flow rate of the cool air per unit volume and per unit time to the freezing chamber, the select chamber can be reliably cooled to the deep temperature zone in a short time.

According to the fourth aspect of the present invention, when the temperature of the select room is set to a temperature range lower than the freezing room temperature range and cool air flows through the select room, the refrigerating capacity of the compressor is increased. Thus, low-temperature cold air is introduced into the select room, and the select room can be reliably and efficiently cooled to a deep temperature zone lower than the freezer compartment temperature zone.

According to the fifth aspect of the present invention, when the temperature of the select chamber is set to a temperature zone lower than the freezing compartment temperature zone and cool air flows through the select chamber, the number of rotations of the condenser cooling fan is increased. Is increased so that there is substantially the same effect as the effect of the invention described in claim 4.

According to the sixth aspect of the present invention, when the temperature of the select room is set to a temperature range lower than the freezing room temperature range and the cool air flows through the select room, the rotation speed of the internal cooling fan is controlled. , The flow rate of the cool air is reduced, but the cool air at a low temperature is introduced into the select room, and the select room can be cooled to the deep temperature zone.

According to the seventh aspect of the present invention, when the temperature of the select room is set to a temperature range lower than the temperature range of the freezer room, the cooling operation is started when the temperature of the freezer room is higher than the upper limit. In the case, the temperature of the refrigerating room and the temperature of the select room are monitored, and the rooms having temperatures close to their respective upper limits are configured to be preferentially cooled, so that both the refrigerating room and the select room are out of the allowable temperature range. A large deviation can be prevented.

According to the eighth aspect of the present invention, the temperature setting of the select room is in a temperature range lower than the freezer temperature range, and the freezer compartment temperature of the select room is higher than the freezer temperature range. When the cooling operation is being performed to the temperature zone lower than the temperature zone, the opening and closing control of the refrigerator compartment damper is performed regardless of the operation state of the select chamber damper. You can return to the mode faster.

According to the ninth aspect of the present invention, when the select room is set to the rapid freezing mode, the compressor and the cooling fan in the store are operated for a fixed time regardless of the temperature in the store of the select room. Then, the select room damper is opened to introduce cool air into the select room, and the refrigerating room damper is configured to be controlled to open and close by the internal temperature of the refrigerating room regardless of the operation state of the select room damper. In the select room set to the freezing mode, the food can be cooled quickly, and in the refrigerator room, temperature fluctuation can be suppressed.

According to the tenth aspect of the present invention, since the input of the dew-prevention heater around the door of the select room is controlled in accordance with the temperature difference between the inside temperature of the select room and the outside air temperature, Appropriate prevention of dew condensation according to operating conditions can be performed without incurring unnecessary power consumption.

According to the eleventh aspect of the present invention, the input of the temperature compensating heater installed on the opposite surface of the refrigerator compartment adjacent to the select compartment is changed according to the set temperature of the select compartment. Unnecessary power consumption can be prevented, and partial deterioration of the temperature distribution in the refrigerator compartment can be prevented.

According to the twelfth aspect of the present invention, since the heat insulation performance around the select room is configured to be higher than the heat insulation performance around the freezer room, heat leakage when the select room is cooled to a temperature in a deep temperature zone or the like can be prevented. Power consumption can be prevented.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing an embodiment of a refrigerator according to the present invention.

FIG. 2 is a diagram showing a model of a flow of cold air in a refrigerator in the embodiment.

FIG. 3 is a flowchart for explaining a control method when the select room is cooled to a temperature equal to or lower than a freezing room temperature zone in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator room 3 Select room 4 Freezer room 6 Evaporator 7 Cooling fan inside a room 8 Select room damper 9 Refrigerator room damper

Claims (12)

[Claims] 1. A refrigerator in which cold air cooled by an evaporator is circulated in a refrigerator by a cooling fan in a refrigerator. In addition to a freezing room and a refrigerator, at least a dedicated flow path of the cold air and introduction of the cold air are controlled. A refrigerator having a select room damper which is cooled to an arbitrary temperature from a refrigerator room temperature range to a temperature range lower than a freezer room temperature range. 2. When the temperature of the select room is set to a lower temperature range than the freezer temperature range during operation of the compressor and cooling is performed, cool air to the refrigerating room is shut off, and the select room damper is turned off. 2. The refrigerator according to claim 1, wherein the refrigerator is configured to be opened to introduce cool air into the select room. 3. When the cool air is flowed into the select room and cooled to a temperature zone lower than the freezer room temperature zone, the flow rate of the cool air per unit volume and per unit time to the select room is set to the unit to the freezer room. 3. The refrigerator according to claim 2, wherein the refrigerator is configured to have a flow rate higher than the flow rate of the cool air per volume and per unit time. 4. The refrigerator according to claim 1, wherein a temperature of said select chamber is set to a temperature zone lower than a temperature zone of said freezer compartment, and when the cool air flows through said select compartment, the refrigerating capacity of said compressor is increased. The refrigerator according to claim 2, wherein 5. When the temperature of said select chamber is set to a temperature zone lower than said freezer compartment temperature zone and cool air flows through said select chamber, the rotation speed of a condenser cooling fan is increased. 3. The refrigerator according to claim 2, wherein: 6. When the temperature of the select room is set to a temperature range lower than the freezer room temperature range and cool air flows through the select room, the number of rotations of the internal cooling fan is reduced. 3. The refrigerator according to claim 2, wherein: 7. When the temperature of the select compartment is set to a temperature zone lower than the freezer compartment temperature zone, and when the temperature of the freezer compartment is higher than an upper limit and a cooling operation is started, the temperature of the refrigerator compartment and the temperature of the refrigerator compartment are reduced. 3. The refrigerator according to claim 2, wherein the temperature of the select room is monitored, and a room having a temperature near each upper limit is preferentially cooled. 8. The temperature setting of the select room is in a temperature range lower than the freezer temperature range, and the temperature in the refrigerator of the select room is higher than the freezer temperature range and cooled to a temperature range lower than the freezer temperature range. 3. The refrigerator according to claim 2, wherein the refrigerator is configured to perform opening / closing control of the refrigerator compartment damper irrespective of an operation state of the select compartment damper during operation. 9. When the select chamber is set to the quick freezing mode, the compressor and the internal cooling fan are operated for a fixed time to open the select chamber damper regardless of the internal temperature of the select chamber. 3. The refrigerator according to claim 2, wherein cool air is introduced into said select chamber, and said refrigerator compartment damper is controlled to open and close by a temperature inside said refrigerator compartment regardless of an operation state of said select chamber damper. The refrigerator as described. 10. The apparatus according to claim 1, wherein an input of a dew-prevention heater around a door of said select room is controlled in accordance with a temperature difference between an inside temperature of said select room and an outside air temperature. The refrigerator according to 1. 11. The apparatus according to claim 1, wherein an input of a temperature compensating heater installed on an opposite surface of said refrigerator compartment adjacent to said select compartment is changed according to a set temperature of said select compartment. The refrigerator according to 1. 12. The refrigerator according to claim 1, wherein the heat insulation performance around the select room is configured to be higher than the heat insulation performance around the freezer room.