WO2022172317A1 - 冷蔵庫 - Google Patents
冷蔵庫 Download PDFInfo
- Publication number
- WO2022172317A1 WO2022172317A1 PCT/JP2021/004742 JP2021004742W WO2022172317A1 WO 2022172317 A1 WO2022172317 A1 WO 2022172317A1 JP 2021004742 W JP2021004742 W JP 2021004742W WO 2022172317 A1 WO2022172317 A1 WO 2022172317A1
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- WIPO (PCT)
- Prior art keywords
- temperature
- time
- control means
- door
- food
- Prior art date
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- 238000001514 detection method Methods 0.000 claims abstract description 29
- 238000007710 freezing Methods 0.000 claims description 35
- 230000008014 freezing Effects 0.000 claims description 35
- 238000001816 cooling Methods 0.000 claims description 20
- 230000007704 transition Effects 0.000 abstract description 15
- 235000013305 food Nutrition 0.000 description 116
- 238000010586 diagram Methods 0.000 description 11
- 238000010583 slow cooling Methods 0.000 description 8
- 235000013311 vegetables Nutrition 0.000 description 7
- 239000013078 crystal Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 235000019583 umami taste Nutrition 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 235000021268 hot food Nutrition 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 235000013330 chicken meat Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002194 freeze distillation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/02—Sensors detecting door opening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
Definitions
- the present disclosure relates to refrigerators with storage compartments that are set to a soft freezing temperature zone.
- the food is temporarily introduced into a supercooled state that does not freeze even below the freezing point, and the food introduced into the supercooled state is physically Or giving a thermal stimulus.
- the term "supercooled state” refers to a state in which the food is not frozen even though the food is cooled to below the freezing temperature of the food.
- Food in a supercooled state is released from the supercooled state by being given a physical or thermal stimulus, and freezes rapidly. Food frozen in this way forms ice nuclei all over the food and can generate fine ice crystals uniformly. Since the ingredients are also maintained, food can be preserved in a high-quality state even when frozen.
- the present disclosure is intended to solve the above-mentioned problems, and aims to provide a refrigerator that can accurately store food in a high-quality state.
- the refrigerator according to the present disclosure includes a heat-insulating box body in which a first storage chamber set to a soft freezing temperature zone is formed, a door that opens and closes an opening formed in the front surface of the first storage chamber, and a door.
- a door open/close detector that detects opening and closing, a temperature detector that detects the internal temperature of the first storage compartment, a temperature control means that adjusts the internal temperature of the first storage compartment, and a temperature detected by the temperature detector.
- a control device for controlling the temperature control means, wherein the control device detects opening and closing of the door during normal temperature control for maintaining the internal temperature of the first storage compartment at a preset normal set temperature.
- the supply of cool air to the first storage chamber by the temperature control means is stopped for a first time period set in advance, and the temperature rise range is greater than or equal to the temperature rise range set in advance through the temperature detection unit during the first time period. is detected, the temperature control means is controlled, the internal temperature of the first storage compartment is shifted to a preset first set temperature lower than the normal set temperature, and the temperature control means is controlled to the first set After maintaining the temperature for a second preset time and maintaining the first set temperature for the second time, the temperature control means is controlled to a second preset temperature which is higher than the normal set temperature.
- controlling the temperature control means to maintain the second set temperature for a preset third period of time after maintaining the second set temperature for the third period of time, controlling the temperature control means to maintain the first Special temperature control is performed by shifting to the set temperature and controlling the temperature control means to maintain the first set temperature for a preset fourth time.
- the opening and closing of the door is detected during normal temperature control for maintaining the internal temperature of the first storage compartment, which is set to the soft freezing temperature range, at the normal set temperature, and If a specified temperature rise is detected while the temperature adjustment is stopped for the first hour, the temperature inside the first storage compartment is maintained at the first set temperature that is lower than the normal set temperature for the second hour.
- Special temperature control is performed by maintaining a second set temperature higher than the set temperature for a third time, then shifting to the first set temperature and maintaining it for a fourth time. Therefore, even after high-temperature food is put into the refrigerator and the door is closed, it is possible to remove the rough heat from the food, introduce it into a supercooled state more reliably, and then freeze it. Food can be preserved in a high-quality state with high accuracy.
- FIG. 1 is a front view of a refrigerator according to Embodiment 1;
- FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional schematic diagram of the refrigerator which concerns on Embodiment 1.
- FIG. FIG. 2 is a schematic vertical cross-sectional view around a switching compartment of the refrigerator according to Embodiment 1;
- FIG. 3 is a block diagram relating to control of the control device for the refrigerator according to Embodiment 1;
- FIG. 10 is a diagram showing temporal changes in the internal temperature of the switchable compartment when the switchable compartment door of the refrigerator according to Embodiment 1 is opened and closed during normal temperature control and high-temperature food is put into the switchable compartment.
- FIG. 4 is a diagram showing;
- FIG. 10 is a diagram showing temporal changes in the internal temperature of the switchable compartment when the switchable compartment door of the refrigerator according to Embodiment 1 is opened and closed during normal temperature control and low-temperature food is put into the switchable compartment.
- the switching compartment door of the refrigerator according to Embodiment 1 is opened and closed during normal temperature control, and the time transition between the opening and closing of the damper immediately after the food with a low temperature is put into the switching compartment and the internal temperature of the switching compartment is shown.
- FIG. 4 is a diagram showing;
- FIG. 1 is a front view of refrigerator 1 according to Embodiment 1.
- FIG. FIG. 2 is a schematic vertical cross-sectional view of refrigerator 1 according to Embodiment 1.
- FIG. 3 is a schematic vertical cross-sectional view of the switching compartment 200 and its surroundings of the refrigerator 1 according to Embodiment 1.
- FIG. 2 is a schematic cross-sectional view taken along line AA in FIG.
- a refrigerator 1 according to Embodiment 1 of the present disclosure includes a heat insulating box body 2 having an open front surface and a storage space formed therein.
- This heat insulating box body 2 is made of hard urethane foam or the like between an outer box 2a made of steel plate forming an outer shell and an inner box 2b made of a thin hard resin such as ABS resin disposed inside the outer box 2a. It is configured by filling the heat insulating material 2c.
- Refrigerator 1 has a plurality of storage compartments, ie, refrigerating compartment 100 arranged at the uppermost level, switchable compartment 200 arranged below refrigerating compartment 100, and switchable compartment 200 adjacent to the side. and an ice making chamber 300 arranged in parallel with the switching chamber 200.
- refrigerating compartment 100 arranged at the uppermost level
- switchable compartment 200 arranged below refrigerating compartment 100
- switchable compartment 200 adjacent to the side.
- an ice making chamber 300 arranged in parallel with the switching chamber 200.
- a vegetable compartment 400 arranged below the switching compartment 200 and the ice making compartment 300 and a lowest freezer compartment 500 arranged below the vegetable compartment 400 are provided.
- An opening formed in the front face of the refrigerator compartment 100 is provided with a double door refrigerator compartment door 11 that opens and closes the opening.
- a double door refrigerator compartment door 11 that opens and closes the opening.
- drawer-type switching compartment doors 12, ice making compartment doors 13, vegetable A chamber door 14 and a freezer chamber door 15 are provided respectively.
- the refrigerating compartment door 11 is provided with a setting operation section 10 that allows the user to perform operations such as setting the temperature of each storage compartment.
- the refrigerating chamber 100 is set to a refrigerating temperature range (for example, approximately 3°C).
- the switchable chamber 200 is set to a freezing temperature range (eg, about -18°C) or a soft freezing temperature range (eg, about -7°C) by switching.
- the ice making chamber 300 is set to a freezing temperature range (for example, about -18°C).
- the vegetable compartment 400 is set to a refrigerating temperature range (for example, approximately 6°C).
- Freezer compartment 500 is set to a freezing temperature range (approximately -18°C).
- the soft freezing temperature range may be -4°C to -10°C.
- each storage chamber is not limited to that of Embodiment 1, and arrangements other than those described above may be used. Also, the number of storage chambers is not limited to that of the first embodiment, and it is sufficient that at least storage chambers that can be set in the soft freezing temperature range are provided.
- a food storage case 18 for storing food is installed in each storage room.
- Each door is provided with a door opening/closing detector 19 for detecting opening/closing of the door.
- a cooling chamber 21 is formed on the back side inside the heat insulating box 2 , and is partitioned into each storage chamber and the cooling chamber 21 by a partition plate 23 .
- a blower fan 31 and a cooler 32 are arranged in the cooling chamber 21 .
- Refrigerator 1 cools each storage compartment by sending cool air cooled by cooler 32 from cooling compartment 21 to each storage compartment by blowing fan 31 .
- the heat insulating box 2 is formed with an air passage 20 that communicates between the cooling chamber 21 and the switchable chamber 200 and feeds cold air cooled by the cooler 32 into the switchable chamber 200 .
- a damper device 17 is arranged in the air passage 20 through which cold air cooled by the cooler 32 is sent from the cooling chamber 21 to each storage chamber.
- the damper device 17 has a damper 17a that opens and closes the air passage 20 under the control of the control device 50, and adjusts the amount of cold air flowing through the air passage 20 by opening and closing the damper 17a.
- Each storage room is provided with a temperature detection unit 16 such as a thermistor.
- the controller 50 controls the temperature control means 30 based on the temperature detected by the temperature detector 16 so that each storage chamber is kept at the set temperature.
- the control device 50 controls the opening degree of the damper device 17 , the output of the compressor 33 , and the airflow rate of the blower fan 31 based on the temperature detected by the temperature detection section 16 .
- the damper device 17 , the compressor 33 , and the blower fan 31 constitute the temperature control means 30 .
- the temperature control means 30 is a temperature adjusting device that adjusts the internal temperature of the storage compartment.
- FIG. 4 is a block diagram regarding control of the control device 50 of the refrigerator 1 according to Embodiment 1.
- a control device 50 and a storage device 51 are provided inside the refrigerator 1 .
- the controller 50 controls the temperature control means 30 based on the temperature detected by the temperature detector 16 . Further, the controller 50 controls the temperature control means 30 based on the detection of the open/closed state of the door by the door open/close detector 19 .
- the control device 50 is composed of, for example, dedicated hardware or a CPU (Central Processing Unit, also referred to as a central processing unit, a processing unit, an arithmetic unit, a microprocessor, or a processor) that executes a program stored in a memory. is.
- a CPU Central Processing Unit, also referred to as a central processing unit, a processing unit, an arithmetic unit, a microprocessor, or a processor
- the storage device 51 stores various information.
- This storage device 51 is composed of, for example, an EEPROM, a flash memory, or the like.
- the storage device 51 stores a normal set temperature, a first set temperature, a second set temperature, a first time, a second time, a third time, a fourth time, a first standby time, a temperature setting range, etc., which will be described later. ing.
- the control device 50 uses these data previously stored in the storage device 51 as necessary.
- the normal set temperature, the first set temperature, and the second set temperature described above are each in a freezing temperature range of 0°C or lower.
- the second set temperature is higher than the upper limit of the hunting width of the normal set temperature, and is set to a temperature between -5°C and 0°C, which is equal to or higher than the freezing start temperature of the food.
- the first set temperature is lower than the lower limit of the hunting width of the normal set temperature.
- the switching chamber 200 is the first storage chamber.
- FIG. 5 shows the internal temperature of the switchable compartment 200 when the switchable compartment door 12 of the refrigerator 1 according to Embodiment 1 is opened and closed during normal temperature control, and high-temperature food is put into the switchable compartment 200.
- FIG. 6 shows opening and closing of damper 17a and switching chamber 200 immediately after the opening and closing of switchable compartment door 12 of refrigerator 1 according to Embodiment 1 is performed during normal temperature control, and food with a high temperature is thrown into switchable compartment 200.
- FIG. is a diagram showing the time transition with the temperature inside the refrigerator. The special temperature control of the refrigerator 1 will be described with reference to FIGS. 5 and 6.
- FIG. 5 shows the change over time of the internal temperature of the switchable compartment 200 when food with a high temperature is introduced.
- the unit of time in FIG. 5 is "time”.
- FIG. 6 is an enlarged diagram showing a time zone from when the control device 50 detects opening/closing of the switchable compartment door 12 in FIG. 5 to when the internal temperature of the switchable compartment 200 shifts to the first set temperature. Note that the unit of time in FIG. 6 is "minutes”.
- normal temperature control refers to control of controlling the temperature control means 30 to maintain the internal temperature of the switchable chamber 200 at the normal set temperature (for example, about -7°C).
- Normal temperature control is performed mainly by controlling the opening and closing of the damper 17 a of the damper device 17 .
- the normal temperature control may be performed by controlling the compressor 33 or the blower fan 31 when each room is controlled in a composite manner. Opening and closing the switchable chamber door 12 means closing the switchable chamber door 12 from an open state.
- the internal temperature of the switching compartment 200 is detected by the temperature detection unit 16 , and a signal regarding the temperature detected by the temperature detection unit 16 is received by the control device 50 .
- the normal set temperature is set in advance and stored in the storage device 51 .
- the control device 50 When the control device 50 detects opening/closing of the switching chamber door 12 based on the signal received from the door opening/closing detection unit 19 during normal temperature control, the control device 50 controls the temperature control means 30 to operate the damper device 17 as shown in FIG.
- the damper 17a is closed for a first time (for example, about 5 minutes) to stop the supply of cool air.
- the control device 50 stops adjusting the temperature of the switching chamber 200 by the temperature control means 30 for the first time.
- the first time is preset and stored in the storage device 51 .
- the control device 50 controls the temperature control means 30 to open the damper 17a of the damper device 17 when a temperature rise width ( ⁇ T) greater than or equal to a preset temperature rise width is detected. Then, the control device 50 shifts the internal temperature of the switchable compartment 200 to a first set temperature (for example, about -12°C) lower than the normal set temperature that is set when the switchable compartment door 12 is not opened/closed.
- a first set temperature for example, about -12°C
- Temperature control is performed mainly by controlling the opening and closing of the damper 17 a of the damper device 17 .
- the temperature control may be performed by controlling the compressor 33 or the blower fan 31 in some cases.
- the first waiting time is preset and stored in the storage device 51 .
- the first set temperature and the preset temperature rise width are specified values and stored in the storage device 51 .
- the controller 50 repeats opening and closing of the damper 17a by controlling the temperature control means 30 so as to maintain the first set temperature, and maintains the first set temperature for a second time (for example, , about 30 minutes).
- the second time is preset and stored in the storage device 51 .
- the control device 50 controls the temperature control means 30 to close the damper 17a to increase the internal temperature of the switching chamber 200 to the second set temperature higher than the normal set temperature. (about -4°C). Temperature control is performed mainly by controlling the opening and closing of the damper 17 a of the damper device 17 . When the temperature is maintained for a long time, and when each room is controlled in a complex manner, the temperature control may be performed by controlling the compressor 33 or the blower fan 31 in some cases. Then, after shifting to the second set temperature, the control device 50 controls the temperature control means 30 so as to maintain the second set temperature, repeats opening and closing of the damper 17a, and keeps the second set temperature for a third time (for example, , about 1.5 hours).
- a third time for example, , about 1.5 hours.
- the second set temperature and the third time are preset and stored in the storage device 51 . At this time, since the internal temperature is lower than the temperature of the food (even at the second set temperature), the temperature of the food does not rise.
- the transition from the second set temperature to the normal set temperature takes about 2.5 hours.
- the inside of the switching chamber 200 is gradually cooled during this period.
- the transition from the normal set temperature to the first set temperature takes about 10 minutes.
- the inside of the switching chamber 200 is rapidly cooled during this period.
- the difference between slow cooling and rapid cooling is performed, for example, by adjusting the opening degree of the damper 17a. good.
- “Slow cooling” and “rapid cooling” are controlled by the control device 50 mainly by adjusting the frequency of opening and closing the damper 17a or the length of the opening time (opening ratio within a certain period of time).
- the control device 50 keeps the damper 17a open when rapid cooling is desired, and repeats opening and closing and shortens the open time when slow cooling is desired. Further, when performing “quenching”, the control device 50 may speed up the operation of the compressor 33 or increase the rotational speed of the blower fan 31 .
- the controller 50 introduces the food into a supercooled state by slowly cooling (slow cooling) the food. After that, by lowering the temperature inside the refrigerator, the food is rapidly cooled, and the lower the temperature of the food, the more unstable the supercooled state becomes (easier to release). state is released.
- the control device 50 cools the temperature inside the refrigerator from the second set temperature to the first set temperature, thereby releasing the food from the supercooled state and introducing the food into the cooled state.
- the control device 50 controls the temperature control means 30 to repeat opening and closing of the damper 17a, and keeps the first set temperature for a fourth time (for example, about 2 time) to maintain.
- Temperature control is performed mainly by controlling the opening and closing of the damper 17 a of the damper device 17 .
- the temperature control may be performed by controlling the compressor 33 or the blower fan 31 in some cases.
- the fourth time is preset and stored in the storage device 51 .
- the control device 50 controls the temperature control means 30 according to the signal received from the door opening/closing detection unit 19 until the opening/closing of the switchable chamber door 12 is detected. Keep the inside of the refrigerator at the normal set temperature. Temperature control is performed mainly by controlling the opening and closing of the damper 17 a of the damper device 17 . When the temperature is maintained for a long time, and when each room is controlled in a complex manner, the temperature control may be performed by controlling the compressor 33 or the blower fan 31 in some cases. Since food has a large heat capacity, the temperature does not rise extremely.
- FIG. 7 shows the internal temperature of the switchable compartment 200 when the switchable compartment door 12 of the refrigerator 1 according to Embodiment 1 is opened and closed during normal temperature control, and low-temperature food is put into the switchable compartment 200.
- FIG. 8 shows opening and closing of damper 17a and switching chamber 200 immediately after the switching chamber door 12 of the refrigerator 1 according to Embodiment 1 is opened and closed during normal temperature control, and low-temperature food is put into the switching chamber 200.
- FIG. is a diagram showing the time transition with the temperature inside the refrigerator. The special temperature control of the refrigerator 1 will be described with reference to FIGS. 7 and 8.
- FIG. 8 shows opening and closing of damper 17a and switching chamber 200 immediately after the switching chamber door 12 of the refrigerator 1 according to Embodiment 1 is opened and closed during normal temperature control, and low-temperature food is put into the switching chamber 200.
- FIG. is a diagram showing the time transition with the temperature inside the refrigerator. The special temperature control of the refrigerator 1 will be described with reference to FIGS. 7 and 8.
- FIG. 7 shows the change over time of the internal temperature of the switchable compartment 200 when food with a low temperature is put in.
- the unit of time in FIG. 7 is "time”.
- FIG. 8 is an enlarged diagram showing a time period after the control device 50 detects opening/closing of the switchable compartment door 12 in FIG. 7 until the inside temperature of the switchable compartment 200 shifts to the second set temperature. Note that the unit of time in FIG. 6 is "minutes”.
- the control device 50 When the control device 50 detects opening/closing of the switching chamber door 12 based on the signal received from the door opening/closing detection unit 19 during normal temperature control, the control device 50 controls the temperature control means 30 to operate the damper device 17 as shown in FIG.
- the damper 17a of is closed for a first time (for example, about 5 minutes).
- the control device 50 stops adjusting the temperature of the switching chamber 200 by the temperature control means 30 for the first time.
- the controller 50 does not detect a temperature rise width ( ⁇ T) greater than or equal to a preset temperature rise width, the controller 50 does not control the temperature control means 30 and keeps the damper 17a of the damper device 17 closed.
- the controller 50 shifts the internal temperature of the switchable chamber 200 to a second set temperature (approximately -4°C) higher than the normal set temperature.
- Temperature control is performed mainly by controlling the opening and closing of the damper 17 a of the damper device 17 .
- the temperature control may be performed by controlling the compressor 33 or the blower fan 31 in some cases.
- the control device 50 controls the temperature control means 30 so as to maintain the second set temperature, repeats opening and closing of the damper 17a, and maintains the second set temperature for a third time (for example, about 1.5 hours). do.
- the control device 50 controls the temperature control means 30 to open the damper 17a of the damper device 17, and raises the internal temperature of the switching chamber 200 from the normal set temperature. to the lower first set temperature (approximately -12°C). Temperature control is performed mainly by controlling the opening and closing of the damper 17 a of the damper device 17 . When the temperature is maintained for a long time, and when each room is controlled in a complex manner, the temperature control may be performed by controlling the compressor 33 or the blower fan 31 in some cases.
- the transition from the second set temperature to the normal set temperature takes about 2.5 hours.
- the inside of the switching chamber 200 is gradually cooled during this period.
- the transition from the normal set temperature to the first set temperature takes about 10 minutes.
- the inside of the switching chamber 200 is rapidly cooled during this period.
- the difference between slow cooling and rapid cooling is performed, for example, by adjusting the opening degree of the damper 17a. good.
- “Slow cooling” and “rapid cooling” are controlled by the control device 50 mainly by adjusting the frequency of opening and closing the damper 17a or the length of the opening time (opening ratio within a certain period of time).
- the control device 50 keeps the damper 17a open when rapid cooling is desired, and repeats opening and closing and shortens the open time when slow cooling is desired. Further, when performing “quenching”, the control device 50 may speed up the operation of the compressor 33 or increase the rotational speed of the blower fan 31 .
- the controller 50 introduces the food into a supercooled state by slowly cooling (slow cooling) the food. After that, by lowering the temperature inside the refrigerator, the food is rapidly cooled, and the lower the temperature of the food, the more unstable the supercooled state becomes (easier to release). state is released.
- the control device 50 cools the temperature inside the refrigerator from the second set temperature to the first set temperature, thereby releasing the food from the supercooled state and introducing the food into the cooled state.
- the control device 50 controls the temperature control means 30 to repeat opening and closing of the damper 17a so as to maintain the first set temperature.
- the temperature is maintained for a fourth hour (eg, about 2 hours). Temperature control is performed mainly by controlling the opening and closing of the damper 17 a of the damper device 17 .
- the temperature control may be performed by controlling the compressor 33 or the blower fan 31 in some cases.
- the control device 50 controls the temperature control means 30 according to the signal received from the door opening/closing detection unit 19 until the opening/closing of the switchable chamber door 12 is detected. Keep the inside of the refrigerator at the normal set temperature. Temperature control is performed mainly by controlling the opening and closing of the damper 17 a of the damper device 17 . When the temperature is maintained for a long time, and when each room is controlled in a complex manner, the temperature control may be performed by controlling the compressor 33 or the blower fan 31 in some cases. Since food has a large heat capacity, the temperature does not rise extremely.
- the control device 50 detects the opening and closing of the switchable chamber door 12, and the temperature width of the specified value (for example, the temperature rise width of about 2° C.) ) or higher temperature rise ( ⁇ T) is detected, the internal temperature of the switching chamber 200 is maintained at the first set temperature for the second time. After that, the control device 50 maintains the internal temperature of the switching chamber 200 at the second set temperature for the third time. Furthermore, after that, the control device 50 performs special temperature control to maintain the internal temperature of the switching chamber 200 at the first set temperature for the fourth time.
- the temperature width of the specified value for example, the temperature rise width of about 2° C.
- ⁇ T higher temperature rise
- the control device 50 when food with a low temperature is put in, if the control device 50 does not detect a temperature rise ( ⁇ T) exceeding the temperature range of the specified value during the first time period after detecting opening/closing of the switching chamber door 12, The internal temperature of the switching chamber 200 is maintained at the second set temperature for the third time. Furthermore, after that, the control device 50 performs special temperature control to maintain the internal temperature of the switching chamber 200 at the first set temperature for the fourth time. Therefore, even after the food is put into the refrigerator and the door is closed, the food can be removed from the rough heat, introduced into the supercooled state more reliably, and then frozen. Food can be preserved in high quality.
- the control device 50 After detecting the opening/closing of the switching chamber door 12, the control device 50 performs special temperature control when a temperature rise above a specified temperature is detected during the first time period. temperature control can be started. As a result, the food is stored at the first set temperature immediately after it is put in, so that the food is cooled more quickly than when it is stored at the normal set temperature.
- the refrigerator 1 stores food such as rice stored in the switchable compartment 200 in a high-quality state because it passes through the refrigeration temperature range (0° C. or higher) that affects the solidification of starch that occurs in rice, etc., in a short period of time. be able to.
- the refrigerator 1 since the food stored in the switchable compartment 200 passes through a high temperature region (for example, 70° C. or higher) in a short time, the refrigerator 1 defrosts the food around the food newly stored in the switchable compartment 200. It is possible to suppress storage quality effects such as loss of data.
- the food is stored between -5°C and 0°C, which is the freezing start temperature or higher, so that the food can be accurately introduced into a supercooled state.
- the term "supercooled state” refers to a state in which the food is not frozen even though the food is cooled to below the freezing temperature of the food.
- the refrigerator 1 can suppress the deterioration of food texture after thawing due to cell destruction of food caused by freezing and the outflow of umami components on the quality of food. In other words, the refrigerator 1 can suppress cell destruction of food, suppress deterioration of texture after thawing, and maintain umami components, so that food can be preserved in a high-quality state even when frozen. Become.
- the control device 50 automatically detects the opening and closing of the switchable chamber door 12 without inputting the fact that the food has been put into the setting operation unit 10. Start temperature control. Therefore, the refrigerator 1 can save food in a high-quality state without trouble. In addition, it is possible to prevent a situation in which the special temperature control is not performed after the food is put in because the user forgets to input the fact that the food has been put into the switching chamber 200 and then enters the fact that the food has been put into the setting operation section 10. can be done.
- the temperature detection unit 16 detects the internal temperature of the switching chamber 200 to detect whether the temperature of the food is high. Then, since the control device 50 automatically starts special temperature control including rapid cooling, the user does not have to take the time and effort of removing heat from hot food, and the refrigerator 1 keeps the food in a high-quality state. It is possible to save.
- the control device 50 gradually cools the interior of the refrigerator from the second set temperature to the normal set temperature, thereby suppressing temperature fluctuations of the food in the interior. . Therefore, the refrigerator 1 can more stably introduce food such as chicken meat, which is difficult to be introduced into the supercooled state, into the supercooled state. In addition, the control device 50 rapidly cools the inside of the refrigerator from the normal set temperature to the second set temperature, thereby increasing the temperature fluctuation of the food inside the refrigerator. Therefore, the refrigerator 1 can reliably release the supercooled state even for high-fat ingredients such as dairy products that are difficult to release from the supercooled state, that is, difficult to start freezing.
- the control device 50 closes the damper 17a after detecting the opening/closing of the switchable compartment door 12, thereby preventing cold air from entering the compartment and preventing the temperature of the switchable compartment 200 from rising when hot food is introduced. It can be detected with high accuracy.
- the refrigerator 1 does not stop the cooler 32 that generates cool air to cool each room, or the blower fan 31 that blows the cool air generated by the cooler 32 to each room. Cool air is prevented from entering the switching chamber 200 by the damper 17a. Therefore, the control device 50 can accurately detect the temperature rise of the switchable compartment 200 without affecting the refrigerator 1 such that the storage compartments other than the switchable compartment 200 are not cooled due to the special temperature control.
- the control device 50 uses the temperature detection unit 16 to detect the temperature inside the refrigerator after the first waiting time has elapsed and at the end of the first time. detect.
- the refrigerator 1 can suppress the influence of the temperature rise inside the refrigerator due to the warm air flowing in from the outside immediately after the switchable chamber door 12 is closed. In this case, the temperature rise of the switching chamber 200 can be detected with higher accuracy.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
Description
図1は、実施の形態1に係る冷蔵庫1の正面図である。図2は、実施の形態1に係る冷蔵庫1の縦断面模式図である。図3は、実施の形態1に係る冷蔵庫1の切替室200周辺の縦断面模式図である。なお、図2は、図1のA-A線位置の断面模式図である。
Claims (5)
- ソフト冷凍温度帯に設定される第一貯蔵室が内部に形成された断熱箱体と、
前記第一貯蔵室の前面に形成された開口部を開閉する扉と、
前記扉の開閉を検知する扉開閉検知部と、
前記第一貯蔵室の庫内温度を検知する温度検知部と、
前記第一貯蔵室の庫内温度を調整する温度制御手段と、
前記温度検知部の検知温度に基づいて、前記温度制御手段を制御する制御装置と、を備え、
前記制御装置は、
前記第一貯蔵室の庫内温度をあらかじめ設定された通常設定温度に維持する通常温度制御中に、前記扉の開閉を検知した場合、前記温度制御手段による前記第一貯蔵室への冷気の供給をあらかじめ設定された第一時間の間停止し、
前記第一時間の間に前記温度検知部を通じてあらかじめ設定された温度上昇幅以上の温度上昇幅を検知した場合、前記温度制御手段を制御し、前記第一貯蔵室の庫内温度を、前記通常設定温度よりも低いあらかじめ設定された第一設定温度に移行させ、前記温度制御手段を制御して前記第一設定温度をあらかじめ設定された第二時間の間維持し、
前記第一設定温度を前記第二時間の間維持した後、前記温度制御手段を制御し、前記通常設定温度よりも高いあらかじめ設定された第二設定温度に移行させ、前記温度制御手段を制御して前記第二設定温度をあらかじめ設定された第三時間の間維持し、
前記第二設定温度を前記第三時間の間維持した後、前記温度制御手段を制御して前記第一設定温度に移行させ、前記温度制御手段を制御して前記第一設定温度をあらかじめ設定された第四時間の間維持する特殊温度制御を行う冷蔵庫。 - 前記温度検知部による温度上昇幅の検知は、前記扉の開閉を検知した後、前記第一時間よりも短いあらかじめ設定された第一待機時間の後から前記第一時間の終了までの間に行われる請求項1に記載の冷蔵庫。
- 前記制御装置は
前記特殊温度制御において、前記扉の開閉を検知した後、前記第一時間よりも短いあらかじめ設定された第一待機時間の経過後から前記第一時間の終了までの間に前記温度検知部を通じてあらかじめ設定された温度上昇幅以上の温度上昇幅を検知しない場合、前記温度制御手段を制御せず、前記通常設定温度よりも高いあらかじめ設定された前記第二設定温度に移行させ、前記温度制御手段を制御して前記第二設定温度をあらかじめ設定された前記第三時間の間維持し、
前記第二設定温度を前記第三時間の間維持した後、前記温度制御手段を制御して前記第一設定温度に移行させて、前記温度制御手段を制御して前記第一設定温度をあらかじめ設定された前記第四時間の間維持する請求項1に記載の冷蔵庫。 - 前記断熱箱体には、
冷却器が配置された冷却室と、前記第一貯蔵室とを連通し、前記冷却器で冷却された冷気を前記第一貯蔵室に送り込む風路が形成されており、
前記温度制御手段は、
前記風路に設置されるダンパ装置であり、
前記ダンパ装置は、
前記制御装置の制御により前記風路を開閉するダンパを有している請求項1~3のいずれか1項に記載の冷蔵庫。 - 前記制御装置は、
前記特殊温度制御において、前記通常温度制御中に前記扉の開閉を検知すると、前記ダンパ装置の前記ダンパを前記第一時間の間閉じた状態とし、
前記温度検知部を通じてあらかじめ設定された温度上昇幅以上の温度上昇幅を検知した場合、前記ダンパ装置の前記ダンパを開き、前記第一貯蔵室の庫内温度を前記第一設定温度に移行させる請求項4に記載の冷蔵庫。
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PCT/JP2021/004742 WO2022172317A1 (ja) | 2021-02-09 | 2021-02-09 | 冷蔵庫 |
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Citations (5)
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JPH1026456A (ja) * | 1996-07-10 | 1998-01-27 | Matsushita Refrig Co Ltd | 冷蔵庫 |
JP2007271155A (ja) * | 2006-03-31 | 2007-10-18 | Hitachi Appliances Inc | 冷蔵庫 |
JP2011007487A (ja) * | 2010-08-26 | 2011-01-13 | Panasonic Corp | 過冷却制御冷蔵庫 |
JP2015081698A (ja) * | 2013-10-22 | 2015-04-27 | ホシザキ電機株式会社 | 冷却庫 |
WO2018033968A1 (ja) * | 2016-08-17 | 2018-02-22 | 三菱電機株式会社 | 冷蔵庫 |
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JP4647047B2 (ja) * | 1999-06-25 | 2011-03-09 | パナソニック株式会社 | 過冷却制御冷蔵庫 |
SG11202104424VA (en) * | 2019-01-10 | 2021-05-28 | Mitsubishi Electric Corp | Refrigerator |
CN111426123B (zh) * | 2019-01-10 | 2022-03-01 | 东芝生活电器株式会社 | 冰箱 |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH1026456A (ja) * | 1996-07-10 | 1998-01-27 | Matsushita Refrig Co Ltd | 冷蔵庫 |
JP2007271155A (ja) * | 2006-03-31 | 2007-10-18 | Hitachi Appliances Inc | 冷蔵庫 |
JP2011007487A (ja) * | 2010-08-26 | 2011-01-13 | Panasonic Corp | 過冷却制御冷蔵庫 |
JP2015081698A (ja) * | 2013-10-22 | 2015-04-27 | ホシザキ電機株式会社 | 冷却庫 |
WO2018033968A1 (ja) * | 2016-08-17 | 2018-02-22 | 三菱電機株式会社 | 冷蔵庫 |
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