JP2022043157A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of further saving energy in a cooling operation during absence of a user.

SOLUTION: A refrigerator includes: a storage chamber disposed in a heat insulation box; a door of the storage chamber; a cooling mechanism having a cooler for producing cold air and a compressor for supplying a refrigerant to the cooler; an operation portion for determining a control condition of the refrigerator; and a control portion executing a first control for controlling the refrigerator, a second control with power consumption less than that in the first control, and a third control with power consumption further less than that of the second control. The second control is terminated on the basis of a termination operation to the operation portion, and the third control is executed during a time when opening/closing frequency of the door is low, terminated on the basis of a condition different from the termination operation, and reduces a rotational frequency of the compressor per a prescribed time to reduce the power consumption in comparison with that in the second control.

SELECTED DRAWING: Figure 8

COPYRIGHT: (C)2022,JPO&INPIT

Description

Embodiments of the present invention relate to a refrigerator.

In the conventional cooling operation of the refrigerator, a power saving mode having a higher power saving effect than the normal mode is provided, and the defrosting operation is delayed or the set temperature in the refrigerator is raised to save energy. The transition from the normal mode to the power saving mode is performed by the frequency of opening and closing the door, the operation of the operation panel, the motion sensor, and the like.

Japanese Unexamined Patent Publication No. 2005-156104

However, even if the mode shifts to the power saving mode, the user does not open and close the refrigerator door at all, and there is a limit to energy saving. However, in recent years, users have become more aware of energy conservation, and it is necessary to respond to their needs.

Therefore, in view of the above problems, it is an object of the present invention to provide a refrigerator capable of further saving energy in the cooling operation while the user is out.

In this embodiment, a storage chamber provided in a heat insulating box, a door of the storage chamber, a cooling mechanism having a cooler for generating cold air and a compressor for supplying a refrigerant to the cooler, and a refrigerator are controlled. An operation unit that sets the state, a control unit that executes the first control for controlling the refrigerator, the second control that consumes less power than the first control, and the third control that consumes less power than the second control. , The second control is terminated based on the termination operation to the operation unit, and the third control is executed while the opening / closing frequency of the door is low, and the conditions are different from the termination operation. It is a refrigerator which is terminated based on the above and consumes less power than the second control by reducing the number of rotations of the compressor per predetermined time.

It is a vertical sectional view of the refrigerator of one Embodiment of this invention. It is a perspective view of the upper part with the door of a refrigerator open. It is a figure of the refrigerating cycle of a refrigerator. It is a front view of the operation panel. It is a block diagram of a refrigerator. It is a figure which shows the relationship between the R start temperature and R end temperature in a normal mode, a power saving mode and an outing mode. It is a flowchart which shows the control of the outing mode. Similarly, it is a flowchart which shows the control method of the outing mode.

Hereinafter, the refrigerator 10 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 8.
(1) Structure of Refrigerator 10 The structure of the refrigerator 10 will be described with reference to FIGS. 1 and 2. FIG. 1 is a vertical sectional view of the refrigerator 10 of the present embodiment, and FIG. 2 is an upper perspective view of the refrigerator 10.

As shown in FIG. 1, the cabinet 12 of the refrigerator 10 is composed of an outer box and an inner box, and has a heat insulating structure having a heat insulating material between them. The cabinet 12 is provided with a refrigerating room 14, a vegetable room 16, an ice making room 18, and a large freezing room 20 in order from the top, and a small freezing room (not shown) is provided next to the ice making room 18. A heat insulating partition is provided between the vegetable compartment 16 and the ice making chamber 18.

An ice making device 22 is arranged inside the ice making room 18, and a tank 24 for supplying water to the ice making device 22 is arranged in the lower part of the refrigerating room 14. Further, a control board 26 of the refrigerator 10 is attached to the upper part of the back surface of the refrigerator compartment 14. A machine room 28 is provided on the back surface of the freezing room 20, that is, on the bottom of the cabinet 12. A compressor 38 is provided in the machine room 28.

As shown in FIG. 2, double doors 14a and 14b are provided on the front surface of the refrigerating room 14, and as shown in FIG. 1, on the front surface of the vegetable room 16, the ice making room 18, the ice making room, and the freezing room 20. Is provided with drawer-type doors 16a, 18a, 20a. As shown in FIG. 2, an operation panel 40 for the user to operate the refrigerator 10 is provided on the front surface of the door 14a on the left side of the refrigerator compartment 14. The operation panel 40 will be described in detail later. Further, touch-type door switches 15 and 15 for automatically opening the doors 14a and 14b are provided on the front surfaces of the doors 14a and 14b, respectively, and the door switch 15 is operated on the upper surface of the cabinet 12. Therefore, a pair of left and right door pressing portions 42 for pressing the doors 14a and 14b forward are provided. As shown in FIG. 5, the door opening / closing detection units 14c, 14d for detecting the opening / closing of the doors 14a, 14b, and the door opening / closing detection units 16b, 18b, 20b for detecting the opening / closing of the drawer-type doors 16a, 18a, 20a are also cabinets 12. It is provided in.

As shown in FIG. 1, a refrigerating evaporator (hereinafter referred to as “R EVA”) 30 is provided in the lower part of the back surface of the vegetable compartment 16, and a fan in the refrigerator (hereinafter referred to as “R EVA”) is provided above the R EVA 30. 32) (referred to as "R fan") are provided. A defrost heater for R EVA (hereinafter referred to as “R defrost heater”) 44 is provided below the R EVA 30, and a defrost sensor for refrigeration (hereinafter referred to as “R”) is provided above the F EVA 30. A defrost sensor) 54 is provided.

A freezing evaporator (hereinafter referred to as "F fan") 34 is provided in the upper part of the back surface of the freezing chamber 20, and a freezing chamber fan (hereinafter referred to as "F fan") 36 is provided above the F EVA 34. It is provided. A defrost heater for F EVA (hereinafter referred to as “F defrost heater”) 46 is provided below the F EVA 34, and a defrost sensor for refrigeration (hereinafter referred to as “F defrost heater”) is provided above the F EVA 34. A frost sensor) 56 is provided.

On the back surface of the refrigerating chamber 14, a refrigerating chamber temperature sensor (hereinafter referred to as “R sensor”) 50 for detecting the temperature inside the refrigerating chamber 14 is provided. On the back surface of the large freezing chamber 20, a freezing chamber temperature sensor (hereinafter referred to as “F sensor”) 52 for detecting the temperature inside the freezing chamber 20 is provided.

(2) Refrigeration cycle 60
Next, the refrigerating cycle 60 of the refrigerator 10 will be described with reference to FIG.

The inlets of the condenser 62, the dew-proof pipe 64, and the three-way valve 66 are connected in order from the discharge side of the compressor 38.

A refrigerating capillary tube (hereinafter referred to as “R capillary tube”) 68, an R EVA 30, and an R accumulator 69 are connected to one R outlet of the three-way valve 66.

A freezing capillary tube (hereinafter referred to as “F capillary tube”) 70, an F EVA 34, an F accumulator 71, and a check valve 72 are connected to the other F outlet of the three-way valve 66.

The outlet side of the check valve 72 and the outlet side of the accumulator 69 become one, and then reach the suction side of the compressor 38 via the suction pipe 74.

In this refrigeration cycle 60, the refrigerant is compressed by the compressor 38, changed into a high-temperature and high-pressure gaseous refrigerant, and becomes a liquid refrigerant while radiating heat through the condenser 62 and the dew-proof pipe 64. The liquid refrigerant is sent to the R capillary tube 68 or the F capillary tube 70 by the three-way valve 66, is depressurized so as to be easily vaporized by the R capillary tube 68 or the F capillary tube 70, and then the R EVA 30 Alternatively, cold air is generated by vaporizing with F-eva 34 and taking heat from the surroundings. The refrigerant that has taken heat from the surroundings flows to each of the accumulators 69 and 71, and in each of the accumulators 69 and 71, the gas-liquid mixture-like refrigerant is separated into a gaseous refrigerant and a liquid refrigerant, respectively, and is gaseous. Only the refrigerant returns to the compressor 38 via the suction pipe 74 and is compressed again to become a high-temperature and high-pressure gaseous refrigerant.

(3) Operation panel 40
The door 14a of the refrigerator compartment 14 is provided with an operation panel 40 as shown in FIG. FIG. 4 is an enlarged front view of the operation panel 40.

As shown in FIG. 4, the type of control performed by the refrigerator 10 is displayed on the upper 401 of the operation panel 40, and when the control is performed, the lamps of these display portions are lit. For example, when "quick freezing" is performed, the lamp of the display portion of "quick freezing" lights up.

In the middle of the operation panel 40, a switch 405 for making ice at once using the refrigerator compartment 14, the temperature control switches 402, 403, 404 in the refrigerator compartment 20, and the ice making device 22 is provided.

The lower part of the operation panel 40 is provided with a power saving switch 406 for starting / ending the power saving mode and an outing switch 408 for starting / ending the outing mode, which will be described later. At the bottom of the outing switch 408, a seven-segment digital date and time display unit 410 is provided.

The user can control the refrigerator 10 by operating the operation panel 40.

(4) Electrical Configuration of Refrigerator 10 Next, the electrical configuration of the refrigerator 10 will be described with reference to the block diagram of FIG.

The control board 26 is provided with a control unit 76 including a microcomputer, a CPU, and the like, and has a built-in timer 78 for measuring time. As shown in FIG. 4, the control unit 76 includes an ice making device 22, a compressor 38, an R fan 32, an F fan 36, a three-way valve 66, an R defrost heater 44, an F defrost heater 46, and an operation panel 40. The R sensor 50, the F sensor 52, the R defrost sensor 54, the F defrost sensor 56, the door open / close detection units 14c and 14d, and the door open / close detection units 16b, 18b and 20b are connected. A power saving switch 406, an outing switch 408, and a date / time display unit 410 are connected to the control panel 40.

The motor of the compressor 38 is inverter-controlled by the control unit 76, and the rotation speed is variable by frequency control such as PWM control. The higher the rotation speed, the larger the supply amount of the refrigerant.

The control unit 76 executes the cooling operation, the defrosting operation, and the ice making operation in the normal mode, the power saving mode, and the outing mode described below.

(5) Normal mode A refrigerating operation in which the control unit 76 cools the refrigerating chamber 14 and the vegetable compartment 16 using the refrigerating cycle 60 (hereinafter referred to as “R mode”), an ice making chamber 18, a small freezing chamber, and a large one. The refrigerating operation (hereinafter referred to as "F mode") for cooling the freezing chamber 20 is alternately performed, and the defrosting operation and the ice making operation are also performed. Hereinafter, this operation is referred to as a "normal mode" cooling operation.

In the R mode, the control unit 76 closes the F outlet of the three-way valve 66, opens the R outlet, and allows a liquid refrigerant to flow to the R EVA 30. Further, the control unit 76 turns on the R fan 32 and turns off the F fan 36. The liquid refrigerant flowing through the R EVA 30 cools the R EVA 30, and the cooled air (cold air) is sent to the refrigerating chamber 14 and the vegetable chamber 16 by the R fan 32. The control unit 76 starts the R mode when the temperature inside the refrigerator detected by the R sensor 50 rises above the R start temperature TR0, and ends the R mode when the detected temperature inside the refrigerator drops to the R end temperature TR1. As a result, the temperature inside the refrigerator compartment 14 and the vegetable compartment 16 is maintained at 1 ° C. to 5 ° C.

In the F mode, the control unit 76 closes the R outlet of the three-way valve 66, opens the F outlet, and allows a liquid refrigerant to flow to the F EVA 34. Further, the control unit 76 turns off the R fan 32 and turns on the F fan 36. The liquid refrigerant flowing through the F EVA 34 cools the F EVA 34, and the cooled air (cold air) is sent to the small refrigerating chamber, the ice making chamber 18, and the large freezing chamber 20 by the F fan 36. The control unit 76 starts the F mode when the temperature inside the refrigerator detected by the F sensor 52 rises above the F start temperature TF0, and ends the R mode when the detected inside temperature drops to the F end temperature TF1. As a result, the temperature inside the small refrigerating room, the ice making room 18, and the large freezing room 20 is maintained at −18 ° C. to −26 ° C. Depending on the temperature inside the refrigerator, it may be necessary to start the R mode and the F mode at the same time. In that case, the control unit 76 gives priority to the F mode.

(6) Defrosting operation The control unit 76 carries out the defrosting operation once a day. In the defrosting operation, cooling is stopped, the R defrosting heater 44 heats the R EVA 30, the F defrosting heater 46 heats the F EVA 34, and the R defrosting sensor 54 and the F defrosting sensor 56 have predetermined temperatures. When the temperature rises above (for example, 2 ° C.), the control unit 76 determines that the defrosting of the R EVA 30 and the F EVA 34 has been completed, and terminates the defrosting operation.

(7) Ice-making operation When the detection lever 22a of the ice-making device 22 built in the ice-making chamber 18 stops detecting ice, the control unit 76 determines that all the ice has been used and starts the ice-making operation. In this ice making operation, in the F mode, water is supplied from the tank 24 in the refrigerating chamber 14 to the ice tray 22b of the ice making device 22 to carry out ice making. This ice making operation is performed at predetermined time intervals until the ice making box 22c is full. If the ice making operation is performed once, for example, 10 pieces of ice are formed, and the ice making box 22c is filled with 50 pieces of ice, the ice making operation is performed 5 times every hour.

(8) Power saving mode Next, the power saving mode will be described. The refrigerator 10 of the present embodiment can carry out a power saving mode having a higher power saving effect than the cooling operation in the normal mode. In this power saving mode, the control unit 76 controls under the following cooling conditions in order to limit the power consumption.

First, the control unit 76 sets the maximum rotation speed of the motor of the compressor 38 to M1 which is lower than the maximum rotation speed M0 in the normal mode. As a result, the maximum power consumption by the motor can be reduced.

Second, the control unit 76 raises the R start temperature TR0 and the R end temperature TR1 in the R mode, and raises the F start temperature TF0 and the F end temperature TF1 in the F mode to set them. This temperature will be described in detail later.

Third, the maximum rotation speed W1 of the R fan 32 and the F fan 36 is set lower than the maximum rotation speed W0 in the normal mode.

Fourth, the control unit 76 sets the ice making operation interval every two hours instead of every one hour.

Fifth, regarding the defrosting operation, the control unit 76 widens the interval of the defrosting operation and lowers the energization rate of the R defrosting heater 44 and the F defrosting heater 46.

In this way, the control unit 76 realizes a power saving mode having a higher power saving effect than the cooling operation in the normal mode. The power saving mode can be started by turning on the power saving switch 406 of the operation panel 40, and can be ended by turning off the power saving switch 406 again by the user.

(9) Outing Mode The refrigerator 10 of the present embodiment can carry out a “outing mode” that has a more power saving effect than the power saving mode. This "outing mode" is a control method focused on the fact that the user is absent from the time the user goes out until the user returns home, and the doors 14a to 20a of the refrigerator 10 are not opened. That is, since the user is out of the control unit 76 when performing the cooling operation, there is no need to prepare for an increase in the temperature inside the refrigerator due to the opening of the doors 14a to 20a or to notify the user of information. Even if the cooling operation is executed with a cooling capacity lower than the cooling capacity of the power saving mode, the temperature inside the refrigerator can be maintained and no information is output. Therefore, in the outing mode, energy saving is realized by performing a power saving cooling operation from the power saving mode. Specifically, the cooling operation in the outing mode is performed under the following cooling conditions.

First, the control unit 76 sets the rotation speed of the motor of the compressor 38 to the maximum rotation speed M0 in the normal mode and the maximum rotation speed M2 even lower than the maximum rotation speed M1 in the power saving mode. However, M0> M1> M2.

Second, the control unit 76 sets the R start temperature TR0 and the R end temperature TR1 in the R mode to be higher than those in the power saving mode, and further sets the F start temperature TF0 and the F end temperature TF1 in the F mode from those in the power saving mode. Raise and set. FIG. 6 shows the temperature setting state in the refrigerator compartment 14, where the vertical axis shows the temperature inside the refrigerator (° C.) and the horizontal axis shows the classification of the normal mode, the power saving mode, and the outing mode.

In the normal mode, the R start temperature is set to 5 ° C and the R end temperature is set to 1 ° C.

In the power saving mode, the R start temperature is set to 7 ° C and the R end temperature is set to 3 ° C.

In the outing mode, the R start temperature is set to 10 ° C and the R end temperature is set to 5 ° C.

Thirdly, the control unit 76 turns off all the lamps in the display portion of the control panel 40, and makes it impossible to operate each switch.

Fourth, the control unit 76 changes the operating conditions for the defrosting operation from those in the normal mode, widens the interval of the defrosting operation from the power saving mode, and makes the R defrosting heater 44 and the F defrosting heater 46. Decrease the energization rate.

Fifth, the control unit 76 also changes the operating conditions for the ice making operation from the normal mode, and performs the ice making operation once in the state where there is no ice, and then does not perform it at all. In this way, the ice making operation is performed only once in the absence of ice because the user may need ice immediately when he / she returns home.

When starting the outing mode, the user can turn on the outing switch 408 of the operation panel 40.
If the user returns home before the end time, the process ends when the doors 14a to 20a are opened.

When the outing mode is terminated, the user presses and holds the outing switch 408 on the operation panel 40 to exit, or the user exits when the doors 14a to 20a are opened.

Further, the user can set the time for executing the outing mode by using the date / time display unit 410. For example, when the outing time is 6 hours, the timer 78 of the control unit 76 counts the time so that the outing mode can be ended after 6 hours, and the outing mode is ended after 6 hours.

(10) Control method of outing mode Next, a control method of the control unit 76 in the outing mode will be described with reference to the flowcharts of FIGS. 7 and 8.

As shown in FIG. 6, in step 1, when the user turns on the outing switch 408 of the operation panel 40, the process proceeds to step 2.

In step S2, the control unit 76 starts the outing mode and proceeds to step 3.

In step S3, the control unit 76 determines the end condition of whether the doors 14a to 20a are opened, the outing switch 408 of the operation panel 40 is operated, or the end time of the outing mode is reached, and the control unit 76 determines. If these end conditions are satisfied, the outing mode is ended, and if the end conditions are not satisfied, the process returns to step S2.

Next, the outing mode will be described with reference to FIG.

When the control unit 76 starts the outing mode in step S2, in step S11, the control unit 76 sets the R start temperature, R end temperature, F start temperature, and F end temperature of the refrigerating room 14 and the freezing room 20 to the outing mode. The cooling conditions of the above are changed, the operating conditions of the defrosting operation and the ice making operation are also changed, and the process proceeds to step S12.

In step S12, the control unit 76 determines whether or not there is ice in the ice making box 22c by using the detection lever 22a of the ice making device 22, and if there is no ice, the process proceeds to step S13, and if there is ice, the process proceeds to step S13. The process proceeds to step S14.

In step S13, the control unit 76 performs one ice making operation using the ice making device 22, and proceeds to step S14.

In step S14, the control unit 76 stops the ice making operation of the ice making device 22 and proceeds to step S15.

In step S15, the control unit 76 determines whether or not the current temperature inside the refrigerator has the changed cooling condition, and if the changed cooling condition is satisfied, the process proceeds to step S16 to satisfy the changed cooling condition. If not, the process proceeds to step S17.

In step S16, the control unit 76 cools the inside of the refrigerator 10 based on the changed cooling conditions, and proceeds to step S15.

In step S17, the control unit 76 determines whether or not the changed operating conditions of the defrosting operation are satisfied, and if the operating conditions are satisfied, the process proceeds to step S18, and if not, the outing mode is set. continue.

In step S18, the control unit 76 performs the defrosting operation based on the changed operating conditions of the defrosting operation, and continues the outing mode when the defrosting operation is completed.

(11) Effect According to the refrigerator 10 of the present embodiment, in the outing mode having a higher power saving effect than the power saving mode, the R start temperature, the R end temperature, the F start temperature, and the F are higher than the power saving mode while the user is out. Since the cooling operation is performed at the end temperature, more effective energy saving can be realized. In particular, since the doors 14a to 20a are not opened at all while the user is out, it is easy to maintain the temperature inside the refrigerator, and cooling can be performed even if the cooling operation is performed with a refrigerating capacity lower than that in the power saving mode.

Further, in the outing mode, the power consumption of the water supply motor of the ice making device 22 and the motor for rotating the ice tray can be reduced by stopping the ice making operation.

Further, in the outing mode, by stopping the operation of the control panel 40, it is possible to reduce the power consumption of the switching elements such as the transistor and FET of the substrate built in the control panel 40, the LED, and the backlight.

Further, regarding the defrosting operation, the defrosting operation is not stopped even if the interval of the defrosting operation is widened or the energization rate of the R defrosting heater 44 and the F defrosting heater 46 is lowered even in the outing mode. As a result, even in the outing mode, the defrosting operation is stopped and frost is formed on the R EVA 30 and the F EVA 34, so that the cooling effect does not deteriorate.

Further, by having various end patterns of the outing mode, it is possible to prevent the outing mode from being inadvertently continued.

(12) Modification example In the above embodiment, the cooling conditions, the ice making operation conditions, and the defrosting operation conditions are changed, but in addition to this, the energization rate of the dew-proof heater may be lowered in the outing mode.

Further, in the above embodiment, when the outing switch 408 is turned on, the control unit 76 immediately starts the outing mode, but the present invention is not limited to this, and for example, the outing mode is started 10 minutes after the outing switch 408 is turned on. May be good. The reason for doing so is that even after the user turns on the outing switch 408, there is a possibility that the refrigerator 10 may be opened and closed before going out, and in this case, it is possible to prevent the outing mode from being canceled.

Further, in the above embodiment, the outing mode is terminated at a designated time, but the timer 78 and the date / time display unit 410 are omitted, and the outing mode is terminated only by opening / closing the door or operating the outing switch 408. You may be able to do it.

Further, in the above embodiment, the ice making operation is completely stopped when there is ice, but instead, the ice making operation may be performed at a longer interval than the normal mode and the power saving mode. ..

Further, the energization rate of the dew-proof heater provided in the cabinet of the refrigerator 10 may also be lowered during the outing mode.

Further, when the refrigerator 10 is provided with a sterilizing device such as a refrigerating chamber 14, the sterilizing device is operated even if this outing mode is implemented. As a result, the inside of the refrigerator is always clean.

Further, regarding the term "outing mode", other terms may be used as long as it is a term that clarifies that the cooling operation is performed while the user is out, and the outing mode, the absence mode, and the like may be used.

Further, in the above embodiment, the refrigerator 10 having the power saving mode has been described, but the present invention is not limited to this, and the refrigerator not having the power saving mode may be equipped with the function of the outing mode.

In addition, although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

10 ... Refrigerator, 12 ... Cabinet, 14 ... Refrigerator room, 22 ... Ice making device, 44 ... R defrost heater, 46 ... F defrost heater, 76 ... Control unit

Claims (10)

The storage room provided in the heat insulating box and
The door of the storage room and
A cooling mechanism having a cooler that generates cold air and a compressor that supplies a refrigerant to the cooler, and
The operation unit that sets the control state of the refrigerator and
Regarding the control of the refrigerator, a control unit that executes the first control, the second control that consumes less power than the first control, and the third control that consumes less power than the second control.
Equipped with
The second control is terminated based on the termination operation to the operation unit, and the second control is terminated.
The third control is executed while the opening / closing frequency of the door is low, is terminated based on a condition different from the termination operation, and the second control is performed by reducing the rotation speed of the compressor per predetermined time. Refrigerator that consumes less power than control. The storage room provided in the heat insulating box and
The door of the storage room and
A cooling mechanism having a cooler that generates cold air and a compressor that supplies a refrigerant to the cooler, and
The operation unit that sets the control state of the refrigerator and
Regarding the control of the refrigerator, a control unit that executes the first control, the second control that consumes less power than the first control, and the third control that consumes less power than the second control.
Equipped with
The second control is terminated based on the termination operation to the operation unit, and the second control is terminated.
The third control is executed while the opening / closing frequency of the door is low, ends based on conditions different from the end operation, and lowers the energization rate of the heating device provided in the heat insulating box. A refrigerator that consumes less power than the second control. The storage room provided in the heat insulating box and
The door of the storage room and
A cooling mechanism having a cooler that generates cold air and a compressor that supplies a refrigerant to the cooler, and
The operation unit that sets the control state of the refrigerator and
Regarding the control of the refrigerator, a control unit that executes the first control, the second control that consumes less power than the first control, and the third control that consumes less power than the second control.
Equipped with
The second control is terminated based on the termination operation to the operation unit, and the second control is terminated.
The third control is executed while the opening / closing frequency of the door is low, is terminated based on a condition different from the termination operation, and the second control is performed by lengthening the interval of the cooling operation of the storage chamber. Refrigerator that consumes less power than. The storage room provided in the heat insulating box and
The door of the storage room and
A cooling mechanism having a cooler that generates cold air and a compressor that supplies a refrigerant to the cooler, and
The operation unit that sets the control state of the refrigerator and
Regarding the control of the refrigerator, a control unit that executes the first control, the second control that consumes less power than the first control, and the third control that consumes less power than the second control.
Equipped with
The second control is terminated based on the termination operation to the operation unit, and the second control is terminated.
The third control is executed while the opening / closing frequency of the door is low, ends based on a condition different from the end operation, and consumes less power than the second control by reducing the execution frequency of the ice making operation. Refrigerator. The refrigerator according to any one of claims 1 to 4, wherein the control unit expands the interval of the defrosting operation from the second control during the third control. The refrigerator according to any one of claims 1 to 5, wherein the control unit does not perform an ice making operation during the third control. The refrigerator according to claim 4, wherein the control unit performs only the first ice making operation during the third control, and does not perform the operation thereafter. The refrigerator according to any one of claims 1 to 7, wherein the control unit stops the display of the display unit during the third control. The refrigerator according to any one of claims 1 to 8, wherein the control unit starts the third control after a predetermined time has elapsed from the time when the operation unit is instructed to start the third control. .. The refrigerator according to any one of claims 1 to 9, wherein the control unit operates the sterilization device even during the third control.

Images