JP2011027290A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator with low cost and with enhanced freezing preservability by suppressing deterioration of stored objects due to freezing. <P>SOLUTION: The refrigerator 10 is equipped with: a storage chamber 28 formed inside a heat-insulating box 11; a refrigeration cycle for cooling the storage chamber 28 by flowing coolant in a cooler 53; and a control part for controlling temperature in the storage chamber 28. When the stored objects are stored in the storage chamber 28, the control part performs freezing operation for cooling the storage chamber 28 to freezing temperature after performing refrigerating operation for cooling the storage chamber 28 to refrigerating temperature for a predetermined period of time. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a refrigerator capable of storing stored items in a frozen state while suppressing deterioration due to freezing.

  Frozen storage is generally performed to store foods and other stored products for a long period of time, but when freezing vegetables and fruits, cell membranes are destroyed and water flows out, and frozen products are thawed. Since the drip flows out, there is a possibility that the quality of the food is deteriorated by freezing.

  Therefore, conventionally, after the storage room for storing the stored items is deaerated and the stored items are dried, the space is cooled, thereby preventing deterioration of the stored items due to freezing and improving the freezing preservation property. It has been proposed (see, for example, Patent Document 1).

JP 2009-39000 A JP 2009-41804 A

  However, in the above refrigerator, in addition to a mechanism for cooling the storage chamber such as a refrigeration cycle, a deaeration mechanism for degassing the storage chamber is required, and the storage chamber must be sealed while being openable and closable by a door. There is a problem that the cost greatly increases.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a refrigerator that can prevent deterioration of stored items due to freezing and has improved frozen storage stability at low cost.

  The refrigerator according to the present invention includes a storage chamber formed inside the heat insulating box, a refrigeration cycle for cooling the storage chamber by flowing a refrigerant through a cooler, and a controller for controlling the temperature in the storage chamber. In the refrigerator, when the stored item is stored in the storage room, the control unit performs a refrigeration operation for cooling the storage room to a refrigeration temperature for a predetermined time, and then cooling the storage room to a refrigeration temperature. It is characterized by performing.

  In the present invention, the above configuration makes it possible to manufacture a refrigerator with reduced storage stability due to freezing and improved frozen storage stability at low cost.

It is a front view which shows the state which removed the door of the refrigerator which concerns on the 1st Embodiment of this invention. It is sectional drawing of the refrigerator which concerns on the 1st Embodiment of this invention. It is a figure which shows the operation panel in the storage chamber of the refrigerator shown in FIG. It is a figure which shows the refrigeration cycle of the refrigerator shown in FIG. It is a block diagram which shows the control structure of the refrigerator shown in FIG. It is a figure which shows the temperature change in the storage chamber of the refrigerator shown in FIG. It is a flowchart which shows control of the refrigerator shown in FIG. It is a flowchart which shows control of the refrigerator which concerns on the 2nd Embodiment of this invention. It is a flowchart which shows control of the refrigerator which concerns on the 3rd Embodiment of this invention. It is a flowchart which shows control of the refrigerator which concerns on the 4th Embodiment of this invention. It is a flowchart which shows control of the refrigerator which concerns on the 5th Embodiment of this invention.

[First Embodiment]
A first embodiment of the present invention will be described below with reference to the drawings.

  The refrigerator 10 which concerns on 1st Embodiment consists of a heat insulation box body with which the foam heat insulating material was filled between the outer box which forms an outer shell, and the inner box which forms a storage space, as shown in FIG.1 and FIG.2. A refrigerator main body 11 is provided, and a storage space is partitioned into an upper refrigerated space 20 and a lower refrigerated space 40 by a heat insulating partition wall 12.

  The refrigerated space 20 is further partitioned vertically by a partition wall 21, a refrigerated chamber 22 having a plurality of stages of mounting shelves is provided in the upper space, and a vegetable chamber 24 in which a drawer-type storage container 25a is disposed in the lower space. Is provided. A refrigeration temperature sensor 34 for measuring the temperature in the refrigeration space 20 is provided on the back of the refrigeration chamber 22.

  The freezing space 40 disposed below the vegetable room 24 is provided with an ice making room 26 and a storage room 28 equipped with an automatic ice making machine on the left and right sides, and a freezing room 30 is provided below the ice making room 26. The storage room 28 is partitioned by a heat insulating wall and insulated from the ice making room 26 and the freezing room 30, and the temperature of the storage room 28 can be set to a temperature different from that of the ice making room 26 and the freezing room 30. A freezing temperature sensor 36 that measures the temperature of the freezing room 30 is provided on the back surface of the freezing room 30, a storage room temperature sensor 37 that measures the temperature of the storage room 28, and the humidity of the storage room 28 on the back surface of the storage room 28. A humidity sensor 39 is provided for measuring. Further, a dehumidifying material 33 such as silica gel or zeolite that reversibly absorbs and releases moisture is disposed on the ceiling surface of the storage chamber 28.

  The front opening of the refrigerator compartment 22 is closed by a refrigerator compartment door 23 pivotally supported by hinges provided on the upper and lower sides of one side of the refrigerator main body 11.

  An operation panel 80 for performing various settings of the refrigerator 10 is disposed on the front surface of the refrigerator compartment door 23. As shown in FIG. 3, the operation panel 80 includes a liquid crystal display panel 82 and a plurality of pushbutton switches 84 arranged in a horizontal row below the display panel 82. The push button switch 84 includes, for example, a refrigerator temperature control switch 84a, a freezer temperature control switch 84b, a quick ice making switch 84c, a stored product changeover switch 84d, and a start switch 84e.

  When the user presses the stored product changeover switch 84d, a plurality of types of stored products are sequentially displayed on the display panel 82. In this embodiment, for example, every time the user presses the stored product changeover switch 84d, “mackerel”, “tuna”, “radish”, and “strawberry” are sequentially switched and displayed on the display panel 82. The user presses the stored product changeover switch 84d to display a desired stored product on the display panel 82, thereby selecting the stored product to be stored frozen in the storage chamber 28. When a stored item to be stored frozen is selected in the storage chamber 28, the selected stored item is input to the control unit 66. When the user presses the start switch 84e, a start signal is input to the control unit 66.

  Openings of the vegetable room 24, the ice making room 26, the storage room 28, and the freezing room 30 are closed by pull-out doors 25, 29, and 31, respectively. The storage containers 25a, 29a, 31a are held by a pair of left and right support frames fixed to the back side of each pull-out type door 25, 29, 31, and are configured to be pulled out of the cabinet together with the opening operation. Note that the drawer type door 29 that closes the opening of the storage chamber 28 is detected by a door sensor 45 to open and close the door 29.

  A refrigeration cooler 52, a refrigeration cooler 53, and blower fans 54 and 55 are disposed on the back surfaces of the refrigeration space 20 and the refrigeration space 40, respectively. The refrigeration cooler 52 and the refrigeration cooler 53 are cooled by alternately guiding the refrigerant discharged from the variable capacity compressor 56 by frequency conversion by an inverter by the refrigeration cycle 50.

  In the refrigeration cycle 50, as shown in FIG. 4, a condenser 58 is connected to the discharge side of the compressor 56, and a three-way valve 60 is connected to the condenser 58. A refrigeration cooler 52 is connected to one of the refrigerant flow paths divided from the three-way valve 60 via a refrigeration capillary tube 62, and a refrigeration cooler 53 is connected to the other refrigerant flow path via a refrigeration capillary tube 64. Has been. The three-way valve 60 switches and diverts the refrigerant liquefied by the condenser 58 to the refrigeration cooler 52 side and the refrigeration cooler 53 side, and interrupts the supply of the refrigerant to both the coolers 52 and 53. Each of the coolers 52 and 53 is connected to the suction side of the compressor 56, and the refrigerant that has flowed through each of the coolers 52 and 53 is taken into the compressor 56 again, whereby the refrigerant circulates in the refrigeration cycle 50. .

  Above the refrigeration cooler 53, there is provided a defrost sensor 41 for detecting the temperature of the cooler 53 and detecting the end timing of defrosting. Below the refrigeration cooler 53, a glass tube heater is provided. A defrosting heater 43 is provided.

  In addition, although it does not specifically limit as a refrigerant | coolant enclosed with the refrigerating cycle 50, In this embodiment, R290 (propane) is used, for example, the refrigerating capacity of the refrigerating cycle 50 is improved, and the ice making room 26, the storage room 28, a freezing room The freezing temperature of 30 is about -40 ° C.

  The air cooled by the refrigeration cooler 52 is introduced into the refrigeration space 20 from the blower outlet 32a through the duct 32 by the blower fan 54, cools the inside of the refrigeration space 20, and is then returned to the refrigeration cooler 52 and cooled again. The

  The air cooled by the refrigeration cooler 53 is diverted to the ice making chamber 26, the storage chamber 28, and the freezing chamber 30 by the blower fan 55, and is blown through the dedicated ducts to cool the chambers 26, 28, and 30. Then, it is returned again to the refrigeration cooler 53 and cooled.

  Regarding the storage chamber 28, the air blown by the blower fan 55 is introduced into the storage chamber 28 from the outlet 42. A damper 44 is disposed in the vicinity of the air outlet 42, and the damper 44 adjusts the amount of air introduced into the storage chamber 28 by adjusting the opening degree of the air outlet 42, so that the temperature in the storage chamber 28 is adjusted. Is controlled by switching between a refrigeration temperature of about 3 to 5 ° C and a freezing temperature of about -20 ° C.

A machine room 57 that houses a compressor 56 and a condenser 58 that constitute a part of the refrigeration cycle 50 is disposed at the lower back of the refrigerator body 11. As shown in FIG. 5, input from various sensors such as a refrigeration temperature sensor 34, a refrigeration temperature sensor 36, a storage room temperature sensor 37, a humidity sensor 39, a defrost sensor 41, and a door sensor 45 is input to the rear surface of the machine room 57. Based on the signal
A control unit 66 that controls various electrical components such as the damper 44, the defrost heater 43, the blower fans 54 and 55, the compressor 56, and the three-way valve 60 is provided in accordance with a control program recorded in the memory 67. In the memory 67, not only the above-described control program but also a plurality of types of stored items that can be selected by pressing the stored product changeover switch 84d are recorded in association with refrigeration times Ts to be described later. In “mackerel”, Ts = 60 minutes, “tuna”, Ts = 60 minutes, “radish”, Ts = 120 minutes, and “strawberry”, Ts = 120 minutes are recorded.

  Next, in the refrigerator 10 having the above-described configuration, when stored items are stored in the storage chamber 28, the control unit 66 performs a refrigeration operation for cooling the storage chamber 28 to a refrigeration temperature for a predetermined time Ts as shown in FIG. After that, the freezing operation for cooling the storage chamber 28 to the freezing temperature is executed.

  Specifically, as shown in FIG. 7, in step S <b> 1, the user stores a stored item in the storage chamber 28.

  Next, in step S <b> 2, the user selects a stored item by pressing the stored item changeover switch 84 d of the operation panel 80, and inputs the selected stored item to the control unit 66. Thereby, the control part 66 calls the refrigeration time Ts corresponding to the input stored material from the memory 67, and sets refrigeration time Ts.

  Next, in step S3, when the user presses the start switch 84e of the operation panel 80 and a start signal is input to the control unit 66, the control unit 66 controls the temperature of the storage chamber 28 to the refrigeration temperature. The operation is started and the operation time T is counted, and the process proceeds to step S4.

  In step S4, the control unit 66 determines whether or not the operation time T is equal to or longer than the refrigeration time Ts set in step S2, that is, whether or not the refrigeration operation is performed. If the operation time T is less than the refrigeration time Ts, step S4 is repeated, and if the operation time T is equal to or greater than the refrigeration time Ts, it is determined that the refrigeration operation is performed and the process proceeds to step S5.

  During the refrigeration operation, the air outlet 42 is always opened without closing the air outlet 42 by the damper 44, and the air cooled by the refrigeration cooler 53 is introduced into the storage chamber 28 from the air outlet 42. It is preferable to control the damper 44 as described above. At that time, it is preferable that the controller 66 sets the opening degree of the damper 44 during the refrigeration operation to be smaller than the opening degree of the damper 44 during the refrigeration operation so that the damper 44 is always opened during the refrigeration operation.

  In step S5, the control unit 66 ends the refrigeration operation, starts the refrigeration operation for controlling the temperature of the storage chamber 28 to the refrigeration temperature, and proceeds to step S6.

  In step S <b> 6, the control unit 66 determines whether the detected temperature Temp of the storage room temperature sensor 37 is −20 ° C. or lower. If the detected temperature Temp is −20 ° C. or lower, the freezing operation is terminated assuming that the stored item stored in the storage chamber 28 is frozen, and if the detected temperature Temp is higher than −20 ° C., the freezing operation is continued.

  As described above, in the refrigerator 10 of the present embodiment, the stored item stored in the storage chamber 28 is frozen by executing the refrigeration operation after performing the refrigeration operation for a predetermined time Ts. Thus, before the stored product is frozen, the stored product is dried to some extent by introducing into the storage chamber 28 air that has been cooled and dried by the freezer cooler 53 while keeping the interior of the storage chamber 28 at a refrigerated temperature. Can be frozen. Therefore, cell destruction caused by volume expansion due to freezing of water in the stored product can be suppressed, and drip outflow can be suppressed, and deterioration of food quality due to frozen storage can be suppressed.

  In addition, during the refrigeration operation, the air outlet 42 is always opened without closing the air outlet 42 by the damper 44, and the air cooled by the refrigeration cooler 53 is introduced into the storage chamber 28 from the air outlet 42. Therefore, the stored product can be efficiently dried.

  Further, the refrigerator 10 according to the present embodiment is manufactured at a low cost because only the temperature control method of the storage chamber 28 is changed and no additional mechanism such as a deaeration mechanism for degassing the interior of the storage chamber 28 is required. be able to.

  Moreover, in the refrigerator 10 of this embodiment, since the refrigeration time Ts which performs a refrigeration operation can be changed, it can be dried appropriately according to the stored item stored in the storage room 28. In addition, in this embodiment, since the refrigeration time Ts is set for each stored item, the user only sets the refrigerated time Ts suitable for the stored item by selecting the stored item in the storage room 28. Can improve usability.

  Further, since the dehumidifying material 33 is disposed in the storage chamber 28 and can be dehumidified in the storage chamber 28, the drying of the stored items in the storage chamber 28 can be promoted.

In the present embodiment, it is configured that the refrigeration time Ts for executing the refrigeration operation is changed by the user selecting a stored item recorded in the memory 67 in advance, but the user can operate by operating the push button switch 84. However, the refrigeration time Ts may be arbitrarily set.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to the drawings. The present embodiment is different from the first embodiment described above in that the control of the blower fan 55 is changed according to the humidity of the storage chamber 28 during the refrigeration operation.

Specifically, as shown in FIG. 8, the user stores the stored item in the storage chamber 28 (step S1), and the user selects the stored item by pressing the stored item changeover switch 84d of the operation panel 80. Thus, the control unit 66 sets the refrigeration time Ts (step S2). Then, the user presses the start switch 84e of the operation panel 80 to start the refrigeration operation for controlling the temperature of the storage chamber 28 to the refrigeration temperature, and starts counting the operation time T, and proceeds to step S11. (Step S3)
In step S11, the control unit 66 determines whether or not the humidity H in the storage chamber 28 measured by the humidity sensor 39 is equal to or lower than a predetermined humidity (for example, 50%). If the humidity H is higher than the predetermined humidity, the process proceeds to step S12.

  In step S12, the control unit 66 increases the rotational speed of the blower fan 55 for blowing the air cooled by the refrigeration cooler 53 to the storage chamber 28, and proceeds to step S13.

  In step S13, the control unit 66 determines whether the humidity H in the storage chamber 28 measured by the humidity sensor 39 is 50% or less. If the humidity H is 50% or less, the process proceeds to step S14. If the humidity H is higher than 50%, this step is repeated, and the state where the rotational speed of the blower fan 55 is increased is continued.

  In step S14, the control unit 66 returns the rotational speed of the blower fan 55 to the state before changing the rotational speed in step 12, and proceeds to step S4.

  In step S4, the control unit 66 determines whether or not the operation time T is equal to or longer than the refrigeration time Ts set in step S2. If the operation time T is less than the refrigeration time Ts, the control unit 66 returns to step S11 and operates. If the time T is equal to or longer than the refrigeration time Ts, it is determined that the refrigeration operation is performed for the refrigeration time Ts and the process proceeds to step S5.

  And the control part 66 complete | finishes refrigeration operation, starts the freezing operation which controls the temperature of the storage room 28 to freezing temperature (step S5), and the detection temperature Temp of the storage room temperature sensor 37 is -20 degrees C or less. (Step S6). If the detected temperature Temp is −20 ° C. or lower, the freezing operation is terminated assuming that the stored item stored in the storage chamber 28 is frozen, and if the detected temperature Temp is higher than −20 ° C., the freezing operation is continued.

  As described above, in the refrigerator 10 of the present embodiment, by increasing the rotational speed of the blower fan 55 during the refrigeration operation, ventilation in the storage chamber 28 is promoted and the stored items in the storage chamber 28 are efficiently dried. be able to. In particular, the rotation speed of the blower fan 55 is increased when the humidity in the storage chamber 28 is higher than a predetermined value, and the rotation speed of the blower fan 55 is not increased when the humidity in the storage chamber 28 is lower than a predetermined value. Thus, the rotational speed of the blower fan 55 can be adjusted as necessary, and an increase in power consumption can be suppressed. Other configurations and operational effects are the same as those of the first embodiment, and detailed description thereof is omitted.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to the drawings. The present embodiment is different from the first and second embodiments described above in that the rotational speed of the compressor 56 constituting a part of the refrigeration cycle 50 is increased during the refrigeration operation.

Specifically, as shown in FIG. 9, the user stores the stored item in the storage chamber 28 (step S1), and the user selects the stored item by pressing the stored item changeover switch 84d of the operation panel 80. Thus, the control unit 66 sets the refrigeration time Ts (step S2). Then, the user presses the start switch 84e of the operation panel 80 to start the refrigerating operation for controlling the temperature of the storage chamber 28 to the refrigerating temperature, and starts counting the operation time T, and proceeds to step S21. (Step S3)
In step S21, the controller 66 determines whether or not the humidity H in the storage chamber 28 measured by the humidity sensor 39 is equal to or lower than a predetermined humidity (for example, 50%). If the humidity H is higher than the predetermined humidity, the process proceeds to step S22. In step S22, the rotational speed of the compressor 56 is increased, and in step S23, the control unit 66 determines whether or not the humidity H in the storage chamber 28 measured by the humidity sensor 39 is 50% or less. If H is 50% or less, the process proceeds to step S24. If the humidity H is greater than 50%, this step is repeated, and the state in which the rotational speed of the blower fan 55 is increased is continued. In step S24, the control unit 66 returns the rotational speed of the compressor 56 to the state before changing the rotational speed in step 12, and proceeds to step S4.

  Thus, by increasing the rotation speed of the compressor 56 during the refrigeration operation, the amount of moisture absorbed by the refrigeration cooler 53 can be increased and the humidity in the storage chamber 28 can be reduced, and the stored items in the storage chamber 28 can be reduced. It can be dried efficiently. Other configurations and operational effects are the same as those of the first embodiment, and detailed description thereof is omitted.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to the drawings. This embodiment is different from the first to third embodiments described above in that when the defrosting operation of the refrigeration cooler 53 is started during the refrigeration operation, the time for executing the refrigeration operation is changed.

Specifically, as shown in FIG. 10, the user stores the stored item in the storage chamber 28 (step S1), and the user selects the stored item by pressing the stored item changeover switch 84d of the operation panel 80. Thus, the control unit 66 sets the refrigeration time Ts (step S2). Then, the user presses the start switch 84e of the operation panel 80 to start the refrigerating operation for controlling the temperature of the storage chamber 28 to the refrigerating temperature, and starts counting the operation time T, and proceeds to step S4. (Step S3)
In step S4, the control unit 66 determines whether or not the operation time T is equal to or longer than the refrigeration time Ts set in step S2. If the operation time T is less than the refrigeration time Ts, the control unit 66 proceeds to step S31. Is longer than the refrigeration time Ts, the process proceeds to step S5 on the assumption that the refrigeration operation has been executed.

  In step S31, the control unit 66 determines whether or not defrosting of the refrigeration cooler 53 that energizes the defrosting heater 43 is started. If defrosting is not started, the control unit 66 returns to step S4 and starts defrosting. If so, the process proceeds to step S32.

  In step S32, this step is repeated until the defrosting of the refrigeration cooler 53 is completed. When the defrosting is completed, the process proceeds to step S33. In step S33, the control unit 66 resets the operation time T to zero, and the process proceeds to step S4. Return.

  In step S5, the control unit 66 ends the refrigeration operation and starts the refrigeration operation for controlling the temperature of the storage chamber 28 to the refrigeration temperature. In step S <b> 6, the control unit 66 determines whether the detected temperature Temp of the storage chamber temperature sensor 37 is −20 ° C. or lower. If the detected temperature Temp is −20 ° C. or lower, the freezing operation is terminated assuming that the stored item stored in the storage chamber 28 is frozen, and if the detected temperature Temp is higher than −20 ° C., the freezing operation is continued.

  As described above, in the refrigerator 10 of the present embodiment, when the defrosting of the refrigeration cooler 53 starts during the refrigeration operation, the operation time T is reset to zero after the defrosting is completed, and the refrigeration operation is performed again for the refrigeration time Ts. Execute. Therefore, even if defrosting is started during the refrigeration operation and the frost attached to the refrigeration cooler 53 is vaporized and humid air is introduced into the storage chamber 28, the refrigeration operation is refrigerated again after the defrosting is completed. By executing the time Ts, the stored item in the storage chamber 28 can be dried and then the refrigeration operation can be performed, and the quality deterioration of the food due to frozen storage can be suppressed. Other configurations and operational effects are the same as those of the first embodiment, and detailed description thereof is omitted.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described with reference to the drawings. This embodiment is different from the first to fourth embodiments described above in that when the pull-out door 29 that closes the storage chamber 28 is opened during the refrigeration operation, the time for executing the refrigeration operation is changed. .

Specifically, as shown in FIG. 11, the user stores the stored item in the storage chamber 28 (step S1), and the user selects the stored item by pressing the stored item changeover switch 84d of the operation panel 80. Thus, the control unit 66 sets the refrigeration time Ts (step S2). Then, the user presses the start switch 84e of the operation panel 80 to start the refrigerating operation for controlling the temperature of the storage chamber 28 to the refrigerating temperature, and starts counting the operation time T, and proceeds to step S4. (Step S3)
In step S4, the controller 66 determines whether or not the operation time T is equal to or longer than the refrigeration time Ts set in step S2. If the operation time T is less than the refrigeration time Ts, the control unit 66 proceeds to step S41, and the operation time T Is longer than the refrigeration time Ts, it is determined that the refrigeration operation is performed for the refrigeration time Ts, and the process proceeds to step S5.

  In step S41, the controller 66 determines whether or not the door sensor 45 detects the opening of the pull-out door 29. If the door is not detected, the control unit 66 returns to step S4. If the door is detected, the control unit 66 returns to step S41. Proceed to S42. In step S42, the controller 66 extends the refrigeration time Ts by a predetermined time (for example, 5 minutes), and returns to step S4.

  In step S5, the control unit 66 ends the refrigeration operation and starts the refrigeration operation for controlling the temperature of the storage chamber 28 to the refrigeration temperature. In step S <b> 6, the control unit 66 determines whether the detected temperature Temp of the storage chamber temperature sensor 37 is −20 ° C. or lower. If the detected temperature Temp is −20 ° C. or lower, the freezing operation is terminated assuming that the stored item stored in the storage chamber 28 is frozen, and if the detected temperature Temp is higher than −20 ° C., the freezing operation is continued.

  Thus, even if the drawer type door 29 is opened during the refrigeration operation and humid air enters the storage chamber 28 from outside the storage room, the stored item in the storage chamber 28 is extended by extending the refrigeration time Ts by a predetermined time. The product can be transferred to a freezing operation after being dried, and the quality deterioration of food due to frozen storage can be suppressed. Other configurations and operational effects are the same as those of the first embodiment, and detailed description thereof is omitted.

DESCRIPTION OF SYMBOLS 10 ... Refrigerator 11 ... Refrigerator main body 20 ... Refrigerated space 22 ... Refrigerated room 24 ... Vegetable room 28 ... Storage room 30 ... Freezer room 33 ... Dehumidifier 34 ... Refrigerated temperature sensor 36 ... Refrigeration temperature sensor 37 ... Storage room temperature sensor 39 ... Humidity Sensor 41 ... Defrost sensor 42 ... Air outlet 44 ... Damper 45 ... Door sensor 50 ... Refrigeration cycle 52 ... Refrigeration cooler 53 ... Refrigeration cooler 54 ... Blower fan 55 ... Blower fan 56 ... Compressor 66 ... Controller 67 ... Memory 80 ... Operation panel 82 ... Display panel 84 ... Push button switch

Claims (7)

In a refrigerator provided with a storage chamber formed inside the heat insulation box, a refrigeration cycle for cooling the storage chamber by flowing a refrigerant through a cooler, and a controller for controlling the temperature in the storage chamber,
The controller performs a refrigeration operation for cooling the storage chamber to a refrigeration temperature for a predetermined time and then performing a refrigeration operation for cooling the storage chamber to a refrigeration temperature when stored items are stored in the storage chamber. A refrigerator characterized by.   The refrigerator according to claim 1, wherein a time for performing the refrigeration operation can be changed. A storage unit that stores a plurality of times for performing the refrigeration operation in correspondence with the stored items, and an operation unit that inputs the stored items to be stored in the storage room to the control unit,
The refrigerator according to claim 2, wherein the control unit executes the refrigeration operation for a time corresponding to a stored item input from the operation unit. A blower fan for blowing air cooled by the cooler to the storage chamber;
The said control part raises the rotation speed of the said ventilation fan during execution of the said refrigerator operation, The refrigerator of any one of Claims 1-3 characterized by the above-mentioned. The refrigeration cycle includes a compressor that compresses refrigerant supplied to the cooler,
The refrigerator according to any one of claims 1 to 4, wherein the control unit increases the rotational speed of the compressor during the execution of the refrigeration operation. A damper that opens and closes a flow path for supplying air cooled by the cooler to the storage chamber;
The refrigerator according to claim 1, wherein the control unit opens the damper during execution of the refrigeration operation.   The refrigerator according to any one of claims 1 to 6, wherein a dehumidifying material is disposed in the storage room.

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