WO2014142130A1 - Glacière, procédé de commande d'une glacière et programme de commande d'une glacière - Google Patents

Glacière, procédé de commande d'une glacière et programme de commande d'une glacière Download PDF

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Publication number
WO2014142130A1
WO2014142130A1 PCT/JP2014/056357 JP2014056357W WO2014142130A1 WO 2014142130 A1 WO2014142130 A1 WO 2014142130A1 JP 2014056357 W JP2014056357 W JP 2014056357W WO 2014142130 A1 WO2014142130 A1 WO 2014142130A1
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Prior art keywords
temperature
detection result
heater
evaporator
equal
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PCT/JP2014/056357
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English (en)
Japanese (ja)
Inventor
玉置　裕一
貴男 大朏
菊地　靖寛
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パナソニックヘルスケア株式会社
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Publication of WO2014142130A1 publication Critical patent/WO2014142130A1/fr

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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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F25D21/006—Defroster control with electronic control circuits
    • 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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating

Definitions

  • the present invention relates to a refrigerator.
  • Refrigerators for cooling objects such as blood, drugs, cells, etc. to be cooled to a predetermined temperature have been developed.
  • a cool box is configured to include a heat insulating casing and a refrigeration apparatus, and the refrigeration apparatus is operated intermittently to control the internal temperature within a certain temperature range.
  • Such a cold storage cools the interior of the refrigerator through an evaporator disposed in a heat insulating casing, but frost tends to adhere to the surface of the evaporator.
  • the refrigerator is equipped with a heater for preventing the frost from adhering to the surface of the evaporator or melting the frost adhering to the surface during the operation stop period of the intermittently operated refrigeration apparatus.
  • a heater for preventing the frost from adhering to the surface of the evaporator or melting the frost adhering to the surface during the operation stop period of the intermittently operated refrigeration apparatus.
  • the invention for solving the above problems includes a storage for storing an object to be cooled, a cooling device for cooling the interior of the storage by evaporating a refrigerant with an evaporator, and a temperature inside the storage. Based on the detection results of the first and second temperature sensors, the first temperature sensor that performs, the heater that melts the frost adhering to the evaporator, the second temperature sensor that detects the temperature of the evaporator, A control device for operating the cooling device and the heater, and the control device receives the first detection result indicating that the detected temperature of the first temperature sensor is equal to or higher than the first temperature.
  • a first operation for operating the cooling device and stopping the heater is executed based on a detection result, and a temperature detected by the first temperature sensor is equal to or lower than a second temperature lower than the first temperature.
  • Second detection indicating When the result is received, based on the second detection result, the cooling device is stopped and the heater is operated. Then, the second operation is performed. During the second operation, the second operation is performed.
  • the third detection result indicating that the detection temperature of the temperature sensor is equal to or higher than the third temperature, which is higher than the melting temperature of frost, is received, the cooling device and the heater are based on the third detection result.
  • a third operation for stopping both of the above is executed.
  • FIGS. 1 and 2 are partial cross-sectional views showing an example of the overall configuration of the cool box 1
  • FIG. 2 is a block diagram showing an example of the configuration that controls the cool box 1.
  • the cool box 1 includes a refrigeration device (cooling device) 2, a heater (heating device) 12, a heat insulating housing 3, a heat insulating door 4, and a control board (control device). , Computer) 10.
  • the refrigeration apparatus 2 includes a compressor 11, a condenser 21, a capillary tube (decompressor) 22, and an evaporator 23 that are annularly connected by a refrigerant pipe.
  • the refrigerant discharged from the compressor 11 is condensed by the condenser 21 in order to obtain the refrigerant action, and then evaporated by the evaporator 23 through the pressure reduction in the capillary tube 22.
  • the evaporator 23 according to the present embodiment is constituted by, for example, a meandering evaporation tube, and is disposed on the back side (the right side in FIG. 1) in the heat insulating casing 3. In the illustration of FIG.
  • an evaporator temperature sensor 14 such as a thermistor (first sensor) is used to detect the temperature of the evaporator 23 on the surface of the refrigerant pipe connected to the refrigerant inlet side of the evaporation tube constituting the evaporator 23. 2 temperature sensors) are attached.
  • the heater 12 is provided along the tube to prevent the frost from adhering to the surface of the evaporation tube constituting the evaporator 23 or to melt the frost adhering to the surface.
  • a heating device such as an electric heater.
  • the heater 12 of the present embodiment is energized to operate alternately with the refrigeration apparatus 2.
  • the heat-insulating housing 3 has a front side (left side in FIG. 1) for taking in and out articles to be cooled (objects to be cooled, such as blood, vaccines, medicines, etc.).
  • An evaporator 23 with a heater 12 is disposed through a partition plate 31 on the back side (the right side in FIG. 1) of the opening. That is, in the illustration of FIG. 1, a space (accommodating chamber) for accommodating an article to be cooled is formed between the heat insulating door 4 and the partition plate 31 in the heat insulating housing 3.
  • a space (cooling chamber) for cooling the air in the accommodation chamber is formed between the inner wall and the inner wall.
  • a suction port 31a is formed below the partition plate 31 (lower side in FIG.
  • a tray (drain pan) 33 for receiving water generated by melting frost attached to the surface of the evaporator 23 is formed at the bottom of the cooling chamber.
  • the tray 33 is provided with a drain pan heater that heats water or frost received by the tray 33.
  • the compressor 11 and the like are disposed in the machine room below the heat insulating casing 3, and the condenser 21 and the capillary tube 22 and the like are disposed on the back side of the heat insulating casing 3.
  • a temperature sensor (internal temperature sensor, first temperature sensor) 13 such as a thermistor for detecting the temperature in the heat insulating housing 3 is disposed in the upper part of the heat insulating housing 3. ing.
  • the heat insulating door 4 is a door that opens or closes the aforementioned opening of the heat insulating housing 3.
  • the heat insulating door 4 closes the opening, as illustrated in FIG. 1, the back surface of the heat insulating door 4 and the packing 3 a around the opening are in close contact with each other, thereby isolating the inside of the heat insulating housing 3 from the atmosphere. It has become so.
  • a display 17 for displaying, for example, the temperature in the heat insulating housing 3 is provided on the front surface of the heat insulating door 4. Further, in the illustration of FIG.
  • either the heat insulating door 4 or the opening of the heat insulating housing 3 includes, for example, a heat insulating door switch (heat insulating) that is turned on when the opening is open and turned off when the opening is closed.
  • Door sensor 15 is provided.
  • the above-mentioned heat insulating casing 3 and the heat insulating door 4 form a storage for storing a cooling target such as blood or medicine.
  • control board 10 is a control device such as a microcomputer including a CPU 101, a memory 102, and the like.
  • the CPU 101 includes a memory 102, a relay 111 for operating or stopping the compressor 11, a relay 112 for operating or stopping the heater 12, a temperature sensor 13 in the heat insulating housing, and an evaporator.
  • the temperature sensor 14, the heat insulating door switch 15, and the display 17 are controlled in an integrated manner.
  • the relay 111 is configured to connect the compressor 11 and the power source 16 in series in the on state, and to block the series connection in the off state, and the relay 112 is connected to the heater 12 and the power source 16 in the on state. Are connected in series, and the series connection is cut off in the off state.
  • the CPU 101 uses, for example, a program stored in the memory 102 (a control program for the cool box) so that the temperature in the heat insulating housing 3 is within an allowable temperature range (upper limit allowable temperature and lower limit allowable temperature described later).
  • a program stored in the memory 102 a control program for the cool box
  • the compressor 11 is operated or stopped, and the heater 12 and the drain pan heater are operated or stopped based on the detection result of the temperature sensor 13 in the heat insulating casing.
  • the CPU 101 may receive first to fifth detection results to be described later, and control on / off of each of the relay 111 and the relay 112 based on the received detection results. In this case, the CPU 101 accepts the first to fifth detection results based on the detected temperatures of the heat-insulated housing temperature sensor 13 and the evaporator temperature sensor 14, respectively.
  • the CPU 101 indicates that the temperature detected by the first temperature sensor is equal to or higher than the first temperature. Accept detection results. For example, when the temperature in the heat insulation housing 3 is equal to or lower than the lower limit allowable temperature, the CPU 101 receives a second detection result indicating that the detected temperature of the first temperature sensor is equal to or lower than the second temperature. For example, when the temperature of the evaporator 23 is equal to or higher than the frost melting set temperature (2 ° C.), the CPU 101 receives a third detection result indicating that the detected temperature of the second temperature sensor is equal to or higher than the third temperature.
  • the CPU 101 receives a fourth detection result indicating that the detected temperature of the second temperature sensor is equal to or lower than the fourth temperature.
  • the CPU 101 receives a fifth detection result indicating that the detected temperature of the second temperature sensor is equal to or higher than the fifth temperature.
  • the memory 102 defines a processing procedure to be described later of the CPU 101, and stores a program used for overall control of the cold storage 1 and various data used when the CPU 102 performs processing.
  • the display 17 includes, for example, the temperature in the heat insulating housing 3 detected by the temperature sensor 13 in the heat insulating housing (the internal temperature, the temperature detected by the first temperature sensor), and the evaporator 23 detected by the evaporator temperature sensor 14. (Temperature detected by the second temperature sensor), the open / close state of the heat insulating door 4 and the like are displayed.
  • the display 17 according to the present embodiment is configured by, for example, a touch panel, and an operator can input information.
  • the operator can perform various settings such as a set temperature in the heat insulating casing 3 of the cool box 1, an upper limit allowable temperature, a lower limit allowable temperature, a lower limit allowable temperature of the evaporator 23, and a frost thawing set temperature.
  • Information can be entered.
  • FIGS. 3 and 4 an operation example of the cool box 1 having the above-described configuration will be described.
  • 3 is a flowchart showing an example of the processing procedure of the cool box 1 controlled by the CPU 101.
  • FIG. 4 shows the temperature in the heat insulating casing 3, the temperature of the evaporator 23, the operating state of the compressor 11, 4 is a diagram illustrating an example of a temporal change in the operation state of the heater 12.
  • the cool box 1 turns off the forced defrosting operation flag when processing is started (S1180).
  • the forced defrosting operation flag is a flag indicating whether or not the cold storage 1 is performing the forced defrosting operation, and is turned on when the forced defrosting operation is being performed. Details of the forced defrosting operation will be described later.
  • the cool box 1 determines whether or not the temperature in the heat insulating casing 3 (inside temperature) is equal to or lower than the lower limit allowable temperature (second temperature) (S1150).
  • the lower limit allowable temperature of the heat insulating housing 3 is set to a value obtained by subtracting a predetermined temperature (2 ° C.) from the set temperature of the cool box 1, for example.
  • a predetermined temperature (2 ° C.) For example, when the set temperature of the cool box 1 is set to 5 ° C., the lower limit allowable temperature of the heat insulating casing 3 is set to 3 ° C. (5 ° C. ⁇ 2 ° C.).
  • the lower limit allowable temperature of the heat insulating housing 3 may be set directly from the display 17.
  • the upper limit allowable temperature (first temperature) of the heat insulating casing 3 is, for example, a value obtained by adding a predetermined temperature (2 ° C.) to the set temperature (5 ° C.) of the cool box 1 Set to When the set temperature of the cool box 1 is set to 5 ° C., the upper limit allowable temperature of the heat insulating housing 3 is set to 7 ° C. (5 ° C. + 2 ° C.).
  • the upper limit allowable temperature of the heat insulating housing 3 may be set directly from the display 17.
  • the value of the range of increase / decrease with respect to the set temperature (5 ° C.) of the cool box 1 may be set to an arbitrary value from the display 17.
  • the cool box 1 receives a second detection result indicating that the temperature in the heat insulating housing 3 is equal to or lower than the lower limit allowable temperature (second temperature) (the temperature detected by the first temperature sensor is equal to or lower than the second temperature). (S1150), the compressor 11 is turned off and the heater 12 is turned on (S1160, S1170). Thereby, the inside of the heat insulation housing
  • second temperature the lower limit allowable temperature
  • the cool box 1 turns off the heater 12 and turns on the compressor 11 (S1000, S1010). Thereby, the inside of the heat insulation housing
  • casing 3 is cooled and temperature falls gradually.
  • the temperature inside the heat insulating housing 3 is equal to or higher than the upper limit allowable temperature of the heat insulating housing 3 ( An example will be described in which a first detection result indicating that the temperature detected by the first temperature sensor is equal to or higher than the first temperature is received).
  • the cool box 1 first turns off the heater 12 and turns on the compressor 11 (S1000, S1010). Note that the operation of the cool box 1 when the heater 12 is turned off and the compressor 11 is turned on corresponds to the first operation. In the first operation, the operation for turning off the heater 12 and the operation for turning on the compressor 11 are performed substantially simultaneously.
  • the cool box 1 executes S1020, but since the temperature in the heat insulating casing 3 is equal to or higher than the upper limit allowable temperature, the conditional branch block of S1020 is branched to “ ⁇ upper limit allowable temperature”.
  • the cold storage 1 determines whether the forced defrosting operation flag is on or off (S1190), but since the forced defrosting operation flag is off, it branches to “OFF”. And the cool box 1 determines the operation state of the compressor 11 (S1030). Here, since the compressor 11 is operating, it branches to “ON” and returns to the processing of S1020 again.
  • the cool box 1 branches the conditional branch block of S1020 to “else”. Since the heater 12 is off, the conditional branch block of S1060 is branched to “OFF”.
  • the cool box 1 determines whether or not the temperature detected by the evaporator temperature sensor 14 is equal to or lower than the lower limit allowable temperature (fourth temperature) of the evaporator 23 (S1090).
  • the lower limit allowable temperature of the evaporator 23 is a temperature set for detecting whether or not the evaporator 23 is under cooling, and is set to ⁇ 18 ° C. using the display 17, for example.
  • the cooling efficiency of the heat insulating housing 3 is lowered by the heat insulating action of the frost. If it does so, the cold storage 1 will make the inside of the heat insulation housing
  • the cool box 1 further increases the operation time of the compressor 11. When the control by the cool box 1 falls into such a cycle, the evaporator 23 enters a supercooled state.
  • the cool box 1 branches the conditional branch block of S1090 to “NO” and returns to the process of S1020 again.
  • the cold storage 1 branches the conditional branch block of S1020 to “ ⁇ lower limit allowable temperature”.
  • the cool box 1 branches the conditional branch block of S1020 to “else”. Since the heater 12 is on, the conditional branch block of S1060 is branched to “ON”.
  • the cool box 1 determines whether the forced defrosting operation flag is on or off (S1220), but the forced defrosting operation flag is off, so the process branches to “OFF”.
  • the cool box 1 determines whether or not the temperature detected by the evaporator temperature sensor 14 is equal to or higher than the frost melting set temperature (third temperature) (S1070).
  • the frost melting set temperature is set to a temperature (for example, 2 ° C.) that is equal to or higher than the temperature (0 ° C.) at which the frost adhered to the evaporator 23 melts. Therefore, if the temperature detected by the evaporator temperature sensor 14 is equal to or higher than the frost melting set temperature, it can be considered that the frost attached to the evaporator 23 has already melted.
  • the cold storage 1 branches the conditional branch block of S1070 to “NO”, and the heater 12 remains on. The process returns to S1020 again.
  • the cool box 1 branches the conditional branch block of S1070 to “YES” and switches the heater 12 to OFF. At this time, the compressor 11 remains off. The operation of the cool box 1 when the heater 12 is turned off and the compressor 11 is turned off corresponds to the third operation.
  • the temperature increase rate in the heat insulating housing 3 can be made moderate.
  • the cool box 1 branches the conditional branch block of S1020 to “ ⁇ upper limit allowable temperature” when executing S1020. Then, the cooling control is started again (from (G) to (H) in FIG. 4).
  • the cool box 1 determines whether or not the temperature of the evaporator 23 has become equal to or higher than the frost melting set temperature (2 ° C.) while performing the heating control (S1090). Even if the temperature of 23 is not equal to or higher than the frost melting set temperature (2 ° C.), the temperature in the heat insulating casing 3 may first be equal to or higher than the upper limit allowable temperature ((I) in FIG. 4).
  • frost may still be attached to the evaporator 23, but the cool box 1 according to the present embodiment has a temperature in the heat insulating housing 3 that is equal to or higher than the upper limit allowable temperature.
  • the conditional branch block of S1020 branches to “ ⁇ upper limit allowable temperature”, and cooling control is started again (from (I) to (J) in FIG. 4). That is, the cool box 1 turns off the heater 12 and turns on the compressor 11 (S1040, S1050).
  • the cool box 1 according to the present embodiment performs control so as to keep the temperature inside the heat insulating casing 3 constant in preference to the melting of the frost attached to the evaporator 23.
  • the cool box 1 according to the present embodiment can store a cooling object such as blood or a medicine having a low tolerance with respect to a temperature change.
  • the cool box 1 determines whether or not the temperature detected by the evaporator temperature sensor 14 is equal to or lower than the lower limit allowable temperature of the evaporator 23 as described above. Is determined (S1090).
  • the cool box 1 is used when the temperature of the evaporator 23 is lower than the lower limit allowable temperature ( ⁇ 18 ° C.) even if the temperature inside the heat insulating housing 3 is not lower than the lower limit allowable temperature (3 ° C.).
  • the compressor 11 is turned off and the heater 12 is turned on (S1100, S1110), and the forced defrosting operation is performed. This is performed ((J) in FIG. 4).
  • the cool box 1 turns on the forced defrosting operation flag indicating that the forced defrosting operation is being performed (S1230). By starting the forced defrosting operation, the temperature inside the heat insulating casing 3 gradually increases.
  • the cold storage 1 executes the processes of S1100, S1110, and S1230 and starts the forced defrosting operation, it branches S1020 to “else”, branches S1060 to “ON”, and the forced defrosting operation flag in S1220. Is ON or OFF, but since the forced defrosting operation flag is ON, the process branches to “ON”. Thereby, even if the temperature of the evaporator 23 reaches
  • the cabinet 1 branches S1200 to “YES” and stops the forced defrosting operation.
  • the cool box 1 turns off the forced defrosting operation flag (S1210) and executes S1030.
  • the flow branches to “OFF”, and the heater 12 is turned off and the compressor is turned on to start cooling the inside of the heat insulating casing 3 (S1040, S1050).
  • the cool box 1 does not turn off the heater 12 during the forced defrosting operation, and compresses the evaporator 23 until the temperature of the evaporator 23 reaches the forced defrosting operation stop temperature (8.5 ° C.).
  • the forced defrosting operation stop temperature is set higher than the frost melting set temperature so that the frost attached to the evaporator 23 can be reliably melted.
  • the cold storage 1 can perform the cooling of the inside of the heat insulation housing 3 by cooling control reliably, and continues cooling the evaporator 23 uselessly. It is possible to prevent waste of power consumption due to the above. It is also possible to prevent a failure due to the overcooling of the evaporator 23. Then, by performing the forced defrosting operation, it is possible to escape from the supercooled state of the evaporator 23 and improve the cooling efficiency in the heat insulating casing 3.
  • the cool box 1 performs control to switch the drain pan heater on and off according to the temperature in the heat insulating housing 3, but the drain pan heater is always on during the forced defrosting operation. In this way, during the forced defrosting operation, the drain pan heater that heats the receiving tray 33 can be turned on regardless of the control during normal operation other than during the forced defrosting operation, so that freezing of water dripping onto the receiving tray 33 can be suppressed. Also, the frost mass falling from the evaporator 23 can be melted.
  • casing 3 of the cool box 1 is the upper limit allowable temperature and the lower limit allowable temperature.
  • the heater 12 is turned off when the temperature of the evaporator 23 becomes equal to or higher than the frost melting set temperature. Therefore ((F) of FIG. 4), the temperature in the heat insulation housing
  • the cool box 1 is a period until the temperature inside the heat insulating housing 3 reaches the upper limit allowable temperature. Since both the heater 12 and the compressor 11 are stopped ((F) to (G) in FIG. 4), the temperature increase rate in the heat insulating casing 3 after the heater 12 is turned off becomes gentle. It becomes possible to maintain the temperature in the heat insulation housing
  • the cool box 1 since the cool box 1 according to the present embodiment subsequently operates the compressor 11 to cool the inside of the heat insulating housing 3 when the temperature in the heat insulating housing 3 reaches the upper limit allowable temperature (see FIG. 4 (G)), the temperature inside the heat insulating casing 3 can be quickly moved away from the upper limit allowable temperature, and the inside of the heat insulating casing 3 can be changed to a more preferable temperature environment.
  • the cool box 1 is Since the operation of the heater 12 is stopped when the temperature in the heat insulating casing 3 reaches the upper limit allowable temperature ((I) in FIG. 4), the temperature in the heat insulating casing 3 of the cool box 1. Can be reliably controlled to be maintained between the upper limit allowable temperature and the lower limit allowable temperature.
  • the cool box 1 operates the compressor 11 to stop the operation of the heater 12 when the operation of the heater 12 is stopped because the temperature in the heat insulation case 3 has reached the upper limit allowable temperature. Since the inside is cooled ((I) in FIG. 4), the temperature inside the heat insulating housing 3 can be quickly moved away from the upper limit allowable temperature, and the inside of the heat insulating housing 3 can be changed to a more preferable temperature environment. Become.
  • the cool box 1 compresses the temperature in the heat insulating housing 3 when the temperature in the heat insulating housing 3 reaches the lower limit allowable temperature while the compressor 11 is operated to cool the heat insulating housing 2. Since the operation of the machine 11 is stopped and the heater 12 is operated to heat the inside of the heat insulating casing 3 ((H) in FIG. 4), the temperature in the heat insulating casing 3 is quickly moved away from the lower limit allowable temperature. Thus, the inside of the heat insulating housing 3 can be changed to a more preferable temperature environment.
  • the cool box 1 is a case where the temperature in the heat insulating housing 3 does not reach the lower limit allowable temperature while the compressor 11 is operated to cool the heat insulating housing 2.
  • the operation of the compressor 11 is stopped and the heater 12 is operated to shift to the forced defrosting operation (see FIG. 4 (J))
  • the cold storage 1 starts cooling control with the frost adhering to the surface of the evaporator 23, and no matter how much the cold storage 1 continues the cooling control, the evaporator 23 only cools more and more. Even when the temperature inside the heat insulating housing 3 is not lowered, it is possible to prevent waste of electric power consumption due to continued cooling, and failure due to overcooling of the evaporator 23. Etc. can be prevented.
  • the cool box 1 performs the first operation based on the first detection result.
  • the cool box 1 performs the second operation based on the second detection result.
  • the cool box 1 performs the third operation based on the third detection result. Therefore, for example, by the first and second operations, the cool box 1 can be controlled so that the temperature in the heat insulating casing 3 becomes a temperature between the upper limit allowable temperature and the lower limit allowable temperature. Furthermore, for example, in the period from (F) to (G) in FIG. 4, the power consumption of the cool box 1 can be reduced by turning off both the compressor 11 and the heater 12.
  • the cold storage 1 is based on the first detection result. Run the operation. That is, the cool box 1 performs control so as to keep the temperature inside the heat insulating casing 3 constant in preference to the melting of the frost attached to the evaporator 23. Therefore, the cool box 1 can store, for example, a cooling object such as blood or medicine having a low tolerance for temperature change.
  • the cold storage 1 is based on the fourth detection result.
  • the second operation is executed. Therefore, for example, the cooling effect by the evaporator 23 can be prevented from being reduced by the heat insulating effect of frost attached to the surface of the evaporator 23, and the cooling efficiency of the cooling device 2 can be improved.
  • the cool box 1 continues the execution of the second operation until receiving the fifth detection result (for example, (K) in FIG. 4), and executes the first operation based on the fifth detection result. Therefore, the frost adhering to the evaporator 23 can be reliably melted.
  • the operation for turning off the heater 12 and the operation for turning on the compressor 11 are performed substantially simultaneously.
  • the operation for turning on the heater 12 and the operation for turning off the compressor 11 are performed substantially simultaneously. Therefore, for example, it is possible to prevent both the heater 12 and the compressor 11 from being turned on, and to control the temperature in the heat insulating casing 3 more efficiently.
  • the heater 12 is a heating device that performs a heating operation by energization, but is not limited thereto.
  • the heater 12 can be turned on / off at a desired timing in order to prevent the frost from adhering to the surface of the evaporator 23 arranged in the heat insulating casing 3 or to melt the frost adhering to the surface. Any means may be used as long as it is a means.
  • the operation or stop of the compressor 11 or the heater 12 is controlled by driving the relay 111 or the relay 112.
  • the present invention is not limited to this.
  • an element such as a thyristor or a triac is used. You may control using.
  • the evaporator 23 is disposed in the space (cooling chamber) partitioned by the partition plate 31 in the heat insulating housing 3, but is not limited thereto, and the partition plate 31 is not limited thereto. There is no need.
  • the cool box 1 is configured such that the temperature of the evaporator 23 is lower than the lower limit allowable temperature ( ⁇ 18 ° C.) even if the temperature inside the heat insulating casing 3 is not lower than the lower limit allowable temperature (3 ° C.).
  • the cool box 1 may not perform the forced defrosting operation. In this case, in the cool box 1, the temperature of the evaporator 23 becomes the lower limit allowable temperature ( ⁇ 18 ° C.) or less even if the temperature inside the heat insulating casing 3 is not lower than the lower limit allowable temperature (3 ° C.).
  • conditional branching block of S1090 is branched to “YES”, the compressor 11 is turned off and the heater 12 is turned on (S1100, S1110), but the forced defrosting operation flag is turned off without executing S1230. Leave.
  • the cool box 1 can start heating in the heat insulating casing 3 ((J) in FIG. 4), and can prevent waste of power consumption due to continued useless cooling. It is also possible to prevent a failure due to the overcooling of the evaporator 23. Furthermore, it can suppress that the inside of the heat insulation housing
  • casing 3 is heated too much and exceeds an upper limit allowable temperature largely.

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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)
  • Defrosting Systems (AREA)

Abstract

La présente invention se rapporte à une glacière qui comprend : une partie de stockage destinée à stocker un objet qui doit être refroidi ; un dispositif de refroidissement destiné à refroidir au moyen d'un évaporateur l'intérieur de la partie de stockage ; un premier capteur de température destiné à détecter la température de l'intérieur de la partie de stockage ; un dispositif de chauffage destiné à faire fondre le givre qui adhère à l'évaporateur ; un second capteur de température destiné à détecter la température de l'évaporateur ; et un dispositif de commande pour actionner, sur la base des résultats des détections réalisées par les premier et second capteurs de température, le dispositif de refroidissement et le dispositif de chauffage. Le dispositif de commande exécute une première opération permettant d'actionner le dispositif de refroidissement et d'arrêter le dispositif de chauffage lorsque la température détectée par le premier capteur de température est supérieure ou égale à une première température, exécute une deuxième opération permettant d'arrêter le dispositif de refroidissement et d'actionner le dispositif de chauffage lorsque la température détectée par le premier capteur de température est inférieure ou égale à une deuxième température qui est inférieure à la première température, et exécute une troisième opération permettant d'arrêter à la fois le dispositif de refroidissement et le dispositif de chauffage lorsque la température détectée par le second capteur de température est supérieure ou égale à une troisième température qui est une température supérieure ou égale à la température de fusion du givre pendant l'exécution de la deuxième opération.
PCT/JP2014/056357 2013-03-13 2014-03-11 Glacière, procédé de commande d'une glacière et programme de commande d'une glacière WO2014142130A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013050373 2013-03-13
JP2013-050373 2013-03-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11859829B2 (en) 2021-12-03 2024-01-02 Whirlpool Corporation Cooktop grate assembly
US11892226B2 (en) 2021-12-10 2024-02-06 Whirlpool Corporation Refrigeration unit and method of assembling

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Publication number Priority date Publication date Assignee Title
JPS453827Y1 (fr) * 1967-10-04 1970-02-21
JPS4732205Y1 (fr) * 1969-08-21 1972-09-28
JPH0331678A (ja) * 1989-06-28 1991-02-12 Matsushita Refrig Co Ltd ショーケースの制御装置
JPH11248331A (ja) * 1998-03-06 1999-09-14 Toshiba Corp 冷蔵庫
JP2001263884A (ja) * 2000-03-22 2001-09-26 Hoshizaki Electric Co Ltd 貯蔵庫の運転制御方法
JP2008267715A (ja) * 2007-04-20 2008-11-06 Fukushima Industries Corp 冷蔵庫の除霜制御装置

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Publication number Priority date Publication date Assignee Title
JPS453827Y1 (fr) * 1967-10-04 1970-02-21
JPS4732205Y1 (fr) * 1969-08-21 1972-09-28
JPH0331678A (ja) * 1989-06-28 1991-02-12 Matsushita Refrig Co Ltd ショーケースの制御装置
JPH11248331A (ja) * 1998-03-06 1999-09-14 Toshiba Corp 冷蔵庫
JP2001263884A (ja) * 2000-03-22 2001-09-26 Hoshizaki Electric Co Ltd 貯蔵庫の運転制御方法
JP2008267715A (ja) * 2007-04-20 2008-11-06 Fukushima Industries Corp 冷蔵庫の除霜制御装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11859829B2 (en) 2021-12-03 2024-01-02 Whirlpool Corporation Cooktop grate assembly
US11892226B2 (en) 2021-12-10 2024-02-06 Whirlpool Corporation Refrigeration unit and method of assembling

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