WO2022267773A1 - Procédé de commande pour un appareil de réfrigération et de congélation, et appareil de réfrigération et de congélation - Google Patents

Procédé de commande pour un appareil de réfrigération et de congélation, et appareil de réfrigération et de congélation Download PDF

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Publication number
WO2022267773A1
WO2022267773A1 PCT/CN2022/093872 CN2022093872W WO2022267773A1 WO 2022267773 A1 WO2022267773 A1 WO 2022267773A1 CN 2022093872 W CN2022093872 W CN 2022093872W WO 2022267773 A1 WO2022267773 A1 WO 2022267773A1
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Prior art keywords
compartment
refrigerated
freezing
refrigerating
compressor
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PCT/CN2022/093872
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English (en)
Chinese (zh)
Inventor
崔展鹏
朱小兵
陈建全
Original Assignee
青岛海尔电冰箱有限公司
海尔智家股份有限公司
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Publication of WO2022267773A1 publication Critical patent/WO2022267773A1/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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor 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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices

Definitions

  • the invention relates to refrigeration and freezing technology, in particular to a control method of a refrigeration and freezing device and the refrigeration and freezing device.
  • the level of humidity in the refrigerating and freezing device will affect the speed of moisture evaporation of the ingredients, thereby affecting the quality of the ingredients.
  • the humidity is too low, the water in the ingredients evaporates quickly, which will cause the weight loss of the ingredients, which in turn leads to problems such as poor food storage effect and short food preservation period. Therefore, moisturizing the refrigerated freezer is always a crucial research topic.
  • most of the current refrigerating and freezing devices humidify and moisturize the refrigerator compartment, and pay little attention to the problem of humidifying and moisturizing the freezer compartment.
  • the humidity in the freezer is low, and the moisture loss of meat and other ingredients stored in the freezer for a long time is serious, and the storage effect is poor, which will not only affect the taste of the ingredients, but also cause the loss of nutrition of the ingredients and affect the user experience.
  • An object of the first aspect of the present invention is to overcome at least one defect of the prior art, to provide a refrigerated freezer that can efficiently maintain or increase the humidity of the compartment in the freezer without affecting the cooling efficiency of the non-refrigerated compartment for a long time.
  • the control method of the device is to overcome at least one defect of the prior art, to provide a refrigerated freezer that can efficiently maintain or increase the humidity of the compartment in the freezer without affecting the cooling efficiency of the non-refrigerated compartment for a long time.
  • a further object of the first aspect of the invention is to increase the cooling efficiency of the non-refrigerated compartment.
  • the object of the second aspect of the present invention is to provide a refrigerating and freezing device that can maintain or increase the humidity of the compartment in the refrigerated compartment without affecting the cooling efficiency of the non-refrigerated compartment for a long time.
  • the present invention provides a control method for a refrigerating and freezing device
  • the refrigerating and freezing device includes a box body, a refrigeration system and a freezing fan, and the box body defines a refrigerated compartment and at least one non-refrigerated compartment
  • the refrigeration system includes a compressor, a condenser, a solenoid valve, a refrigerated capillary and a refrigerated evaporator that are connected in series in sequence.
  • At least one non-refrigerated branch of the amount each of which includes a non-refrigerated capillary and a non-refrigerated evaporator in series, and the refrigeration fan is used to promote the frozen evaporator when the frozen compartment is refrigerated.
  • the generated cooling air flows to the freezing compartment; wherein the control method includes:
  • a step of selectively adjusting the operating frequency of the compressor and the start-stop state of the refrigeration fan according to the humidity of the compartment so that the compressor operates at variable speeds and the refrigeration fan operates intermittently include:
  • the reduced operating frequency of the compressor is at the lowest operating frequency of the compressor and the compressor is in the refrigerating between the set operating frequencies when the freezer is in freezer compartment cooling;
  • the operating frequency of the compressor is increased to the setting of the compressor when the refrigerating and freezing device is in the cooling state of the freezing compartment operating frequency.
  • the reduced operating frequency of the compressor is 3-17 Hz lower than the set operating frequency.
  • the rotation speed of the freezing fan is lower than the set rotating speed of the freezing fan when the refrigerating and freezing device is in the cooling state of the freezing compartment .
  • control method also includes:
  • the electromagnetic The valve is switched to the cooling state of the freezing compartment, and the operating frequency of the compressor is restored to a preset operating frequency for cooling the freezing compartment.
  • the maximum humidity endpoint value of the preset humidity range is any relative humidity value between 80% and 100%.
  • the minimum humidity endpoint value of the preset humidity range is any relative humidity value between 45% and 55%.
  • the at least one non-refrigerated compartment comprises a refrigerated compartment
  • the at least one non-refrigerated branch comprises a refrigerated branch
  • the non-refrigerated capillary comprises a refrigerated capillary
  • the non-refrigerated evaporator comprises a refrigerated evaporator
  • the at least one non-refrigerated compartment includes a variable temperature compartment
  • the at least one non-refrigerated branch includes a variable temperature branch
  • the non-refrigerated capillary includes a variable temperature capillary
  • the non-refrigerated evaporator includes a variable temperature evaporator.
  • the present invention also provides a refrigerating and freezing device, comprising:
  • a cabinet defining a refrigerated compartment and at least one non-refrigerated compartment
  • the refrigeration system includes a compressor, a condenser, a solenoid valve, a refrigerated capillary and a refrigerated evaporator connected in series in sequence, and at least a non-refrigerated branch each comprising a non-refrigerated capillary and a non-refrigerated evaporator connected in series;
  • a refrigeration fan for causing the cooling airflow generated by the refrigeration evaporator to flow to the refrigeration compartment when the refrigeration compartment is refrigerated
  • the control device includes a processor and a memory, where a machine-executable program is stored in the memory, and when the machine-executable program is executed by the processor, it is used to implement the control method described in any of the above schemes.
  • the refrigerating and freezing device of the present invention increases the temperature of the evaporator of the refrigerating evaporator by reducing the operating frequency of the compressor during the refrigerating period of the non-refrigerating compartment, so that the temperature of the evaporator of the refrigerating evaporator is high while meeting the cooling demand of the non-refrigerating compartment
  • the external water vapor entering the freezer through the door seal and the moisture in the freezer (such as the moisture volatilized by ingredients) will condense in the freezer with a lower temperature instead of condensing at the freezer evaporator.
  • the freezer evaporator The water vapor formed by partial frost sublimation on the surface enters the freezing compartment with lower temperature under the impetus of the freezing fan.
  • the moisture content in the freezer can be increased simultaneously from multiple aspects, thereby efficiently increasing the humidity in the freezer, and avoiding the low humidity in the freezer from affecting the food preservation effect.
  • the present invention sets a preset humidity range, and adjusts the operating frequency and frequency of the compressor according to the humidity of the compartment in the refrigerated compartment.
  • the start-stop state of the refrigeration fan makes the compressor run at variable speed and the refrigeration fan runs intermittently, so that the humidity of the room in the freezer is dynamically within the preset humidity range, which not only maintains or improves the room temperature in the freezer. room humidity without affecting the cooling efficiency of non-refrigerated rooms for a long time.
  • the humidity of the compartment in the freezer is greater than or equal to the maximum humidity endpoint value of the preset humidity range, it means that the humidity in the freezer is already high enough, and it is meaningless to continue to increase the humidity in the freezer.
  • the freezing fan is stopped to avoid excessive temperature rise in the freezing room, but also the operating frequency of the compressor is increased to reduce the evaporator temperature of the non-refrigerating evaporator, thereby improving the cooling efficiency of the non-refrigerating room.
  • the humidity of the compartment in the freezer compartment obtained again after increasing the operating frequency of the compressor and stopping the refrigeration fan is within the preset humidity range, it means that the humidity in the freezer compartment is suitable, and humidification is still not needed.
  • keeping the operating frequency of the compressor unchanged and keeping the refrigerating fan in a stopped state can prolong the time that the compressor operates at a higher frequency and further improve the refrigerating efficiency of the non-refrigerated compartment.
  • Fig. 1 is a schematic structural diagram of a refrigerating and freezing device according to one embodiment of the present invention
  • Fig. 2 is a schematic structural block diagram of a refrigeration system of a refrigerator-freezer according to an embodiment of the present invention
  • Fig. 3 is a schematic flowchart of a control method of a refrigerating and freezing device according to a specific embodiment of the present invention
  • Fig. 4 is a schematic flowchart of a control method of a refrigerating and freezing device according to another specific embodiment of the present invention.
  • Fig. 5 is a schematic structural block diagram of a refrigeration system according to another embodiment of the present invention.
  • Fig. 6 is a schematic structural block diagram of a refrigeration system according to yet another embodiment of the present invention.
  • Fig. 7 is a schematic structural block diagram of a refrigerating and freezing device according to an embodiment of the present invention.
  • the present invention firstly provides a control method for a refrigerating and freezing device
  • Fig. 1 is a schematic structural diagram of a refrigerating and freezing device according to an embodiment of the present invention
  • Fig. 2 is a schematic diagram of a refrigeration system of a refrigerating and freezing device according to an embodiment of the present invention sex structure diagram.
  • the refrigerating and freezing device 1 includes a cabinet 10 , a refrigeration system 20 and a freezing fan 30 .
  • a freezer compartment 11 and at least one non-freeze compartment are defined inside the box body 10 .
  • the freezer compartment 11 is used as a frozen storage compartment
  • the non-freezer compartment is used as a non-freezing storage compartment.
  • the non-freezer compartment can be used as a storage room for refrigeration or variable temperature room. Normally, the temperature in the non-refrigerated compartment is higher than the temperature in the refrigerated compartment 11 .
  • the refrigeration system 20 includes a compressor 21, a condenser 22, a solenoid valve 23, a refrigerated capillary 24, and a refrigerated evaporator 25 that are connected in series in sequence, and two ends of the refrigerated capillary 24 are connected in parallel to provide refrigeration for the above-mentioned at least one non-refrigerated compartment respectively.
  • At least one non-refrigerated branch of the quantity, each non-refrigerated branch includes a non-refrigerated capillary and a non-refrigerated evaporator connected in series.
  • the series connection and parallel connection mentioned in the present invention respectively refer to the physical series connection and parallel connection of the refrigerant flow paths, rather than the series connection and parallel connection of the circuit structure.
  • the refrigerating fan 30 is used to promote the cooling airflow generated by the refrigerating evaporator 25 to flow to the refrigerating compartment 11 when the refrigerating compartment 11 is cooling. That is to say, the refrigeration blower 30 can force the fluid at the location of the refrigeration evaporator 25 to flow to the refrigeration compartment 11 .
  • the state of the solenoid valve 23 is set to communicate with the condenser 22 and the non-refrigerating branch corresponding to the non-refrigerating compartment.
  • the refrigerant flowing out from the compressor 21 It passes through the condenser 22, the electromagnetic valve 23, the non-refrigerating evaporator and the non-refrigerating capillary of the non-refrigerating branch, and the freezing evaporator 25 in turn, and finally returns to the compressor 21.
  • the state of the electromagnetic valve 23 is set to communicate with the condenser 22 and the freezing capillary 24.
  • the refrigerant flowing out from the compressor 21 passes through the condenser 22 and the electromagnetic valve 23 in sequence. , the freezing capillary 24 and the freezing evaporator 25, and finally return to the compressor 21.
  • the freezer compartment 11 is not an absolutely closed compartment.
  • the air carrying moisture from the outside will enter the freezer compartment 11 through the door seal of the freezer compartment 11; the unfrozen ingredients inside the freezer compartment 11 will volatilize a certain amount of moisture; after the ingredients in the freezer compartment 11 are frozen, the ingredients
  • the moisture on the surface has a small amount of sublimation; the frost formed on the surface of the freezing evaporator 25 also has a small amount of sublimation.
  • the refrigerating-freezing device 1 originally has a variety of moisture sources that can be used for moisturizing or humidifying the freezing compartment 11 . If these moisture can be effectively used as moisturizing or humidifying the freezing compartment 11, then there is no need to arrange any other humidifying devices.
  • frost condensation rarely occurs in the storage compartment, and frost condensation basically occurs on the evaporator. This is because the temperature of the evaporator is generally lower than that of the storage compartment. That is to say, water vapor usually gathers and condenses in places with lower temperatures. Then, if the compartment temperature in the freezing compartment 11 is lower than the evaporator temperature at the freezing evaporator 25, water vapor will gather in the freezing compartment 11, which can effectively moisturize the freezing compartment 11 or improve the cooling capacity of the freezing compartment. Indoor humidity.
  • the present invention particularly proposes a kind of control method of refrigeration freezer, and this control method comprises:
  • the operating frequency of the compressor 21 and the start-stop state of the freezing fan 30 are selectively adjusted, so that the compressor 21 operates at variable speeds, and the freezing fan 30 runs intermittently, thereby making the freezing compartment
  • the humidity of the compartments in the chamber 11 is dynamically within a preset humidity range.
  • variable speed operation of the compressor 21 means that in the non-refrigerated compartment cooling interval, the operating frequency of the compressor may increase, decrease, or remain unchanged in a short period of time;
  • the intermittent operation of the refrigeration fan 30 means Refrigerating fan 30 runs for a period of time, then stops for a period of time and then runs again, and then stops so repeatedly.
  • the refrigerating and freezing device 1 of the present invention increases the evaporator temperature of the refrigerating evaporator 25 by reducing the operating frequency of the compressor 21 during the cooling period of the non-refrigerating compartment, so that the refrigerating evaporator 25 can
  • the temperature of the evaporator is higher than the temperature of the compartment in the freezing compartment 11, and the control freezing fan is in operation.
  • the external water vapor entering the freezer compartment 11 through the door seal and the moisture in the freezer compartment 11 (such as the moisture volatilized by the food, the water sublimated on the surface of the frozen food, etc.) will condense in the freezer compartment 11 with a lower temperature. Instead of condensing at the refrigerated evaporator 25.
  • the water vapor formed by sublimation of part of the frost on the surface of the refrigerating evaporator 25 enters the refrigerated compartment 11 with a lower temperature under the action of the refrigerating fan 30 .
  • the moisture content in the freezer compartment 11 can be increased simultaneously from multiple aspects, thereby efficiently increasing the humidity in the freezer compartment 11 , and avoiding the effect of low humidity in the freezer compartment 11 affecting food preservation.
  • the present invention specially sets a preset humidity range, and selectively adjusts it according to the humidity of the compartment in the freezing compartment 11.
  • the operating frequency of the compressor 21 and the start-stop state of the refrigerating fan 30 make the compressor 21 run at variable speeds and the refrigerating fan 30 run intermittently, so that the humidity in the refrigerated compartment 11 is dynamically within the preset humidity range In this way, the humidity in the refrigerated compartment 11 is maintained or increased without affecting the cooling efficiency of the non-refrigerated compartment for a long time.
  • the present invention realizes the effect of humidifying and moisturizing the freezing compartment 11 by controlling the operating frequency of the compressor 21 on the basis of the original structure of the refrigerating and freezing device 1, and does not need to add any auxiliary structure. Therefore, it will not affect the refrigerating and freezing device 1 It will not have any impact on the original structure and storage capacity, which is convenient for practical application.
  • the scheme of the present invention for realizing the humidification and moisturizing of the frozen compartment 11 is completely different from the scheme adopted in the prior art. The design idea is very novel, and the moisturizing and humidification effect is remarkable, and the prospect of practical application is good.
  • Fig. 3 is a schematic flow chart of a control method of a refrigerating and freezing device according to a specific embodiment of the present invention.
  • the control method of the present invention includes:
  • Step S10 obtaining the current state of the refrigerating and freezing device 1;
  • Step S20 judging whether the refrigerating-freezing device 1 is in the cooling state of the non-freezing compartment; if so, then go to step S30, if not, then return to step S10; and
  • Step S30 reducing the operating frequency of the compressor 21, so that the evaporator temperature of the refrigerated evaporator 25 is higher than the compartment temperature in the refrigerated compartment 11;
  • Step S40 controlling the refrigeration fan 30 to be in the running state
  • Step S50 obtaining the compartment humidity in the freezing compartment 11;
  • Step S60 selectively adjust the operating frequency of the compressor 21 and the start-stop state of the refrigeration fan 30 according to the humidity of the compartment in the freezing compartment 11, so that the compressor 21 operates at variable speeds, and the refrigeration fan 30 operates intermittently, thereby
  • the humidity of the compartment in the freezer compartment 11 is dynamically within the preset humidity range.
  • the aforementioned preset humidity range has a maximum humidity endpoint value and a minimum humidity endpoint value, and the maximum humidity endpoint value is greater than the minimum humidity endpoint value.
  • the operating frequency of the compressor 21 and the start-stop state of the freezing fan 30 are selectively adjusted, so that the compressor 21 operates at variable speeds, and the freezing fan 30 intermittently
  • the specific steps of operation may include:
  • the present invention not only stops the refrigeration blower 30 to prevent the relatively high-temperature airflow at the refrigeration evaporator 25 from flowing too much into the refrigeration compartment 11 to cause an excessive rise in temperature therein, but also increases the operating frequency of the compressor 21 to Reduces the evaporator temperature of the non-refrigerated evaporator, thereby increasing the cooling efficiency of the non-refrigerated compartment. To a certain extent, this weakens or even eliminates the adverse effect on the cooling of the non-refrigerated compartment after the operation frequency of the compressor 21 is reduced because the refrigerated compartment 11 needs to be kept moist or humidified.
  • the present invention still keeps the operating frequency of the compressor 21 unchanged (i.e. runs at the increased operating frequency) and keeps the refrigerating fan 30 in a stopped state, which can prolong the time during which the compressor 21 operates at a higher frequency, and further improves the non-stop operation. Cooling efficiency of the freezer compartment.
  • the present invention reduces the operating frequency of the compressor 21 again so that the temperature of the evaporator of the refrigerated evaporator 25 is higher than the temperature of the compartment in the refrigerated compartment 11, and starts the refrigerated fan 30 again, so that the refrigerating fan 30 that enters through the door seal can be utilized again.
  • the external water vapor in the freezing compartment 11 , the moisture in the freezing compartment 11 , and the water vapor formed by partial frosting and sublimation on the surface of the freezing evaporator 25 humidify the freezing compartment 11 , and so on.
  • Fig. 4 is a schematic flowchart of a control method for a refrigerating and freezing device according to another specific embodiment of the present invention.
  • the above step S60 may specifically include:
  • Step S61 judging whether the humidity of the compartment in the freezer compartment 11 is greater than or equal to the maximum humidity endpoint value of the preset humidity range; if yes, go to step S62; if not, return to step S50;
  • Step S62 stop the refrigeration fan 30, and increase the operating frequency of the compressor 21;
  • Step S63 acquiring the compartment humidity in the freezing compartment 11 again;
  • Step S64 judging whether the compartment humidity in the refrigerated compartment 11 acquired again is less than the maximum humidity endpoint value of the preset humidity range; if yes, go to step S65; if not, go to step S62;
  • Step S65 Determine whether the reacquired compartment humidity in the refrigerated compartment 11 is less than or equal to the minimum humidity endpoint value of the preset humidity range; if yes, go to step S30, if not, go to step S66.
  • Step S66 keeping the operating frequency of the compressor 21 and the state of the refrigeration fan 30 unchanged.
  • step S60 of some alternative embodiments it may also be determined in accordance with other appropriate sequences whether the reacquired compartment humidity in the freezing compartment 11 is within a preset humidity range. I won't go into details here.
  • the maximum humidity endpoint value of the preset humidity range may be any relative humidity value between 80% and 100%.
  • the maximum humidity endpoint may be 80%, 85%, 90%, 95%, or 100%.
  • the humidity in the freezer compartment 11 is not yet saturated, close to saturated or just saturated, the water vapor in the freezer compartment 11 will not or is not easy to condense, and the moisturizing or humidifying effect is better. Therefore, the food preservation effect is better. .
  • the refrigeration fan 30 will run continuously, which will not improve the moisturizing effect or humidification effect, but also seriously affect the cooling efficiency of the non-refrigerated compartment. If the maximum humidity endpoint value is too small, the refrigeration fan 30 will be stopped when the humidity in the freezer compartment 11 does not meet the demand, and the operating frequency of the compressor 21 will be increased, resulting in poor humidification effect of the freezer compartment 11, or even Not obvious.
  • the minimum humidity endpoint value of the preset humidity range is any relative humidity value between 45% and 55%.
  • the minimum humidity endpoint may be 45%, 47%, 50%, 53%, or 55%.
  • the humidity in the freezer compartment 11 is not yet saturated, but it barely affects the quality of the ingredients. If the minimum humidity endpoint value is too large, the compressor 21 will easily reduce the operating frequency again, resulting in the compressor 21 operating at a higher frequency for too short a time and thus unable to effectively improve the cooling efficiency of the non-refrigerated compartment 11 .
  • the minimum humidity endpoint value is too small, the condition for reducing the operating frequency of the compressor 21 may still not be met after the humidity in the freezing compartment 11 drops excessively, resulting in the inability to carry out substantial and long-term moisturizing of the freezing compartment 11 Humidification operation, the room humidity fluctuation range in the freezer room 11 is relatively large, which is not conducive to the high-quality preservation of food materials.
  • the cooling demand of the non-freezing compartment needs to be met. Therefore, the operating frequency of the compressor 21 cannot be too low.
  • the reduced operating frequency of the compressor 21 is at the lowest operating frequency of the compressor 21 and the compressor 21 is at the lowest operating frequency of the refrigerating-freezing device 1 Between the set operating frequencies when the freezer compartment is in the cooling state. In this way, the cooling demand of the non-freezing compartment can be met, and the temperature of the evaporator of the freezing evaporator 25 can be appropriately higher than the temperature of the compartment in the freezing compartment 11, so as to realize moisturizing or humidification of the freezing compartment 11 the goal of.
  • the reduction range of the operating frequency of the compressor 21 can be the same each time, and can also be adjusted according to the specific humidity in the freezing compartment 11 .
  • the operating frequency of the compressor 21 can be increased until the compressor 21 is in the freezer compartment when the refrigerating and freezing device 1 is in the freezer compartment.
  • the set operating frequency in the cooling state is to improve the cooling efficiency of the non-refrigerated compartment as much as possible, and weaken the cooling effect of the non-refrigerated compartment after reducing the operating frequency of the compressor 21 due to the need for moisturizing or humidification of the refrigerated compartment 11. adverse effects.
  • the reduced operating frequency of the compressor 21 is higher than the setting of the compressor 21 when the refrigerating-freezing device 1 is in the cooling state of the freezing compartment.
  • the fixed operating frequency is 3-17 Hz lower. That is to say, as long as the operating frequency of the compressor 21 is appropriately reduced so that the evaporator temperature of the refrigerated evaporator 25 is slightly higher than the temperature in the refrigerated compartment 11, the refrigerating efficiency and refrigerating efficiency of the non-refrigerated compartment are maximized. Refrigeration effect, and to the greatest possible extent avoid the temperature in the freezing compartment 11 from rising too much.
  • the reduced operating frequency of compressor 21 may be 3 Hz, 5 Hz, 7 Hz, 9 Hz, 11 Hz, 13 Hz lower than the operating frequency of compressor 21 during refrigerated compartment cooling. , 15 Hz or 17 Hz.
  • the reduced operating frequency of the compressor 21 is 8-12 Hz lower than the above-mentioned set operating frequency of the compressor 21 . Therefore, the cooling efficiency and cooling effect of the non-freezing compartment, and the moisturizing and humidifying effect in the freezing compartment 11 are all better.
  • the aforementioned reduced operating frequency of the compressor 21 includes each reduced operating frequency of the compressor 21 during cooling of the non-refrigerated compartment.
  • the rotational speed of the freezing fan 30 does not need to be relatively high.
  • the rotating speed of the refrigerating fan 30 is less than the setting of the refrigerating fan 30 when the refrigerating-freezing device 1 is in the refrigerating state of the freezing compartment. Rotating speed.
  • the water vapor formed by the sublimation of part of the frost on the freezing evaporator 25 can be sent into the freezing compartment 11 quickly, and it can also prevent too much air flow with a relatively high temperature from entering the freezing compartment 11 and causing the freezing in the freezing compartment 11. The temperature rises more and affects the freezing effect of the freezing compartment 11 .
  • control method of the present invention also includes:
  • the solenoid valve 23 is controlled to switch. To cool the freezer compartment 11, and restore the operating frequency of the compressor 21 to the preset operating frequency for cooling the freezer compartment 11, so that the freezer compartment 11 reaches the set temperature quickly.
  • the at least one non-refrigerated compartment may include a refrigerated compartment 12, the at least one non-refrigerated branch may include a refrigerated branch 201, the non-refrigerated capillary may include a refrigerated capillary 26, and the non-refrigerated evaporator may include A refrigerated evaporator 27 is included.
  • the refrigerated compartment 11 is moisturized or humidified by reducing the operating frequency of the compressor 21 .
  • Fig. 5 is a schematic structural block diagram of a refrigeration system according to another embodiment of the present invention.
  • the above-mentioned at least one non-refrigerated compartment may include a variable temperature compartment 13
  • the above-mentioned at least one non-refrigerated branch may include a variable-temperature branch 202
  • the above-mentioned non-refrigerated capillary may include a variable-temperature capillary 28
  • the above-mentioned non-refrigerated evaporator A variable temperature evaporator 29 may be included.
  • the freezing compartment 11 is kept moist or humidified by reducing the operating frequency of the compressor 21 .
  • Fig. 6 is a schematic structural block diagram of a refrigeration system according to yet another embodiment of the present invention.
  • the number of non-freezing compartments can be two, which are refrigerated compartments 12 and variable temperature compartments 13 .
  • the number of non-refrigerated branches is two, namely the refrigerated branch 201 and the variable temperature branch 202 .
  • the number of non-refrigerating evaporators is two, which are refrigerating evaporators 27 and variable temperature evaporators 29 respectively.
  • the freezing compartment 11 is kept moist or humidified by reducing the operating frequency of the compressor 21 .
  • FIG. 7 is a schematic structural block diagram of the refrigerating and freezing device according to an embodiment of the present invention.
  • the refrigerating and freezing device 1 of the present invention includes a cabinet 10 , a refrigeration system 20 , a freezing fan 30 and a control device 40 .
  • a freezer compartment 11 and at least one non-freeze compartment are defined inside the box body 10 .
  • the refrigeration system 20 includes a compressor 21, a condenser 22, a solenoid valve 23, a refrigerated capillary 24, and a refrigerated evaporator 25 that are connected in series in sequence, and two ends of the refrigerated capillary 24 are connected in parallel to provide refrigeration for the above-mentioned at least one non-refrigerated compartment respectively.
  • At least one non-refrigerated branch of the quantity, each non-refrigerated branch includes a non-refrigerated capillary and a non-refrigerated evaporator connected in series. specifically.
  • the compressor 21 is electrically connected with the control device 40 to operate under the control of the control device 40 .
  • the refrigerating fan 30 is used to promote the cooling airflow generated by the refrigerating evaporator 25 to flow to the refrigerating compartment 11 when the refrigerating compartment 11 is cooling.
  • the refrigeration blower 30 is electrically connected with the control device 40 to operate under the control of the control device 40 .
  • the control device 40 includes a processor 41 and a memory 42, the memory 42 stores a machine executable program 43, and the machine executable program 43 is used to implement the control method described in any of the above embodiments when executed by the processor 41.
  • the refrigerating and freezing device 1 of the present invention can quickly and efficiently increase the moisture content in the freezing compartment 11, increase the humidity of the compartment in the freezing compartment 11, and avoid excessive temperature in the freezing compartment 11 caused by the long-time operation of the freezing fan 30. Elevated issues.
  • the processor 41 may be a central processing unit (central processing unit, CPU for short), or a digital processing unit or the like.
  • the processor 41 sends and receives data through the communication interface.
  • the memory 44 is used to store programs executed by the processor 41 .
  • the memory 44 is any medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer, and can also be a combination of multiple memories.
  • the above-mentioned machine-executable program 43 can be downloaded from a computer-readable storage medium to a corresponding computing/processing device or downloaded to a computer or an external storage device via a network (such as the Internet, a local area network, a wide area network, and/or a wireless network).
  • the refrigerating and freezing device 1 of the present invention includes not only a refrigerator, but also a freezer, a freezer or other refrigerating and freezing devices with at least a freezing function.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

Procédé de commande pour un appareil de réfrigération et de congélation (1), et appareil de réfrigération et de congélation (1). L'appareil de réfrigération et de congélation (1) comprend un corps de boîte (10), un système de refroidissement (20) et un ventilateur de congélation (30). Un compartiment de congélation (11) et au moins un compartiment de non-congélation sont définis dans le corps de boîte (10). Le système de refroidissement (20) comprend un compresseur (21), un condenseur (22), une électrovanne (23), un capillaire de congélation (24), un évaporateur de congélation (25), un capillaire de non-congélation et un évaporateur de non-congélation qui sont séquentiellement reliés en série pour former une boucle. Le procédé de commande consiste à : lorsque l'appareil de réfrigération et de congélation (1) est dans un état de refroidissement dans n'importe quel compartiment de non-congélation, réduire la fréquence de fonctionnement du compresseur (21), de telle sorte que la température d'évaporateur de l'évaporateur de congélation (25) est supérieure à la température de compartiment dans le compartiment de congélation (11) ; commander le ventilateur de congélation (30) pour qu'il soit dans un état de fonctionnement ; obtenir l'humidité de compartiment dans le compartiment de congélation (11) ; et sélectivement ajuster la fréquence de fonctionnement du compresseur (21) et l'état de marche/d'arrêt du ventilateur de congélation (30) selon l'humidité de compartiment, de telle sorte que le compresseur (21) fonctionne à une vitesse variable et le ventilateur de congélation (30) fonctionne par intermittence, de façon à éviter d'affecter l'efficacité de refroidissement du compartiment de non-congélation pendant une longue période.
PCT/CN2022/093872 2021-06-21 2022-05-19 Procédé de commande pour un appareil de réfrigération et de congélation, et appareil de réfrigération et de congélation WO2022267773A1 (fr)

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CN202110686634.7A CN115574532A (zh) 2021-06-21 2021-06-21 冷藏冷冻装置的控制方法及冷藏冷冻装置
CN202110686634.7 2021-06-21

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1047826A (ja) * 1996-08-06 1998-02-20 Matsushita Refrig Co Ltd 冷凍冷蔵庫
JP2004132618A (ja) * 2002-10-10 2004-04-30 Toshiba Corp 冷蔵庫
CN105222511A (zh) * 2015-10-14 2016-01-06 合肥美菱股份有限公司 一种风冷冰箱的保湿控制方法及其应用
CN108955039A (zh) * 2018-09-14 2018-12-07 长虹美菱股份有限公司 一种带有冰箱专区的冰箱及冰箱专区的湿度控制方法
CN109140870A (zh) * 2018-08-20 2019-01-04 长虹美菱股份有限公司 一种具有低湿度精确调节功能的风冷冰箱及其控制方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1047826A (ja) * 1996-08-06 1998-02-20 Matsushita Refrig Co Ltd 冷凍冷蔵庫
JP2004132618A (ja) * 2002-10-10 2004-04-30 Toshiba Corp 冷蔵庫
CN105222511A (zh) * 2015-10-14 2016-01-06 合肥美菱股份有限公司 一种风冷冰箱的保湿控制方法及其应用
CN109140870A (zh) * 2018-08-20 2019-01-04 长虹美菱股份有限公司 一种具有低湿度精确调节功能的风冷冰箱及其控制方法
CN108955039A (zh) * 2018-09-14 2018-12-07 长虹美菱股份有限公司 一种带有冰箱专区的冰箱及冰箱专区的湿度控制方法

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