WO2018103724A1 - Dispositif de réfrigération et de congélation et procédé de commande de conversation au frais par régulation d'air associé - Google Patents

Dispositif de réfrigération et de congélation et procédé de commande de conversation au frais par régulation d'air associé Download PDF

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Publication number
WO2018103724A1
WO2018103724A1 PCT/CN2017/115137 CN2017115137W WO2018103724A1 WO 2018103724 A1 WO2018103724 A1 WO 2018103724A1 CN 2017115137 W CN2017115137 W CN 2017115137W WO 2018103724 A1 WO2018103724 A1 WO 2018103724A1
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WIPO (PCT)
Prior art keywords
fresh
keeping
modified atmosphere
refrigerating
atmosphere
Prior art date
Application number
PCT/CN2017/115137
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English (en)
Chinese (zh)
Inventor
娄喜才
王铭
王胜飞
王磊
Original Assignee
青岛海尔股份有限公司
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Publication of WO2018103724A1 publication Critical patent/WO2018103724A1/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
    • 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
    • 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
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/003—Arrangement or mounting of control or safety devices for movable devices
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments

Definitions

  • the invention relates to the field of storage technology, in particular to a refrigerating and freezing device and a controlled atmosphere freshening control method thereof.
  • Food is the source of energy for people to survive and is vital to people.
  • the two main aspects are heat preservation and preservation.
  • temperature has a significant effect on the microbial activity on food and the action of enzymes in food. The decrease in temperature will delay the deterioration of food, and the refrigerator will remain constant.
  • a low-temperature refrigeration device is also a civilian product that keeps food or other items at a constant low temperature.
  • the stored food should also ensure that the color, taste, freshness, etc. of the food remain as constant as possible during storage. Therefore, users have put forward higher requirements for the preservation technology of the refrigerator.
  • the fresh-keeping technology of the refrigerator mainly adopts a vacuum preservation technology, and the vacuum fresh-keeping food excludes part of the air (oxygen) in the packaging container, destroying the conditions of growth of bacteria and microorganisms, thereby effectively preventing food spoilage and deterioration.
  • the vacuum preservation methods currently used are vacuum bag preservation and vacuum storage room preservation.
  • Vacuum bags are used for fresh-keeping, consumers need to carry out vacuuming operations every time they store food, which is troublesome and cannot be enjoyed by consumers.
  • the vacuum storage compartment is used for fresh-keeping. Because the box body is a rigid structure, it is required to maintain a vacuum state. The vacuum system is highly demanded, and the sealing performance of the refrigerator is very high. Each time an item is taken, a new one is poured in. More air, the consumption of energy in the refrigerator is greater.
  • the fresh-keeping system due to the installation of the fresh-keeping system, it will have certain influence on the original refrigeration system. For example, the fresh-keeping system and the refrigeration system are simultaneously activated, which will lead to the superposition of noise and the superposition of electric load, and at the same time, due to the lack of reasonable control of the fresh-keeping system, it is easy.
  • the problem of lowering the freshness preservation effect and increasing the energy consumption makes the refrigerator fresh-keeping function of the refrigerator difficult to realize.
  • An object of the present invention is to provide a controlled atmosphere freshening control method for a refrigerating and freezing device having a low cost and good fresh-keeping effect.
  • a further object of the present invention is to enable the modified atmosphere freshening system and the refrigeration system of the refrigerating and freezing apparatus to work in coordination to avoid mutual influence.
  • Another further object of the invention is to simplify the control complexity of the modified atmosphere freshening system.
  • the present invention provides a controlled atmosphere freshening control method for a refrigerating and freezing apparatus, wherein the refrigerating and freezing apparatus includes a tank defining a storage space, a modified atmosphere preservation system, and a refrigeration system, wherein a sealed space is formed in the storage space.
  • the modified atmosphere storage compartment includes a gas regulating membrane module and an air pump, and the air pump is configured to infiltrate the gas of the modified air conditioning subspace through the gas regulating membrane module to maintain a sub-storage space in the storage space.
  • the gas atmosphere is formed to facilitate food preservation
  • the refrigeration system is configured to provide cooling capacity to the storage space
  • the freshness control method comprises: obtaining a fresh-keeping operation mark of the modified atmosphere fresh-keeping system, and setting the fresh-keeping operation mark according to an operation event of the refrigeration and freezing device, And indicating whether the operation of the modified air freshening system is allowed
  • the running events of the refrigerating and freezing device include at least: an operation time of the refrigerating and freezing device, a start-stop event of the refrigeration system, an event that the storage space is opened and closed, and an air-conditioned fresh-keeping subspace is opened.
  • the step of setting the fresh-keeping running identifier according to the running event of the refrigerating and freezing device comprises: setting the fresh-keeping running flag to a prohibited state after the cooling system is started, and keeping the fresh-keeping operation after the first preset time of the cooling system being turned off The run ID is set to the allowed state.
  • the step of setting the fresh-keeping running identifier according to the running event of the refrigerating and freezing device comprises: setting the fresh-keeping running flag to a prohibited state after entering the frequent opening time period of the refrigerating and freezing device, and keeping the fresh-keeping operation after waiting for the frequent opening time period to pass
  • the run ID is set to the allowed state.
  • the step of setting the fresh-keeping running identifier according to the running event of the refrigerating and freezing device comprises: setting the fresh-keeping running flag to a prohibited state after the storage space is opened; and after the second preset time after the storage space is closed And when the modified fresh-keeping subspace is continuously closed for the third preset time, the fresh-keeping running flag is set to the allowable state.
  • the sealed alarm prompt information is output.
  • the power-on condition includes: the time for the gas adjustment of the modified air-preserving subspace to be completed by the last modified atmosphere preservation system exceeds a fifth preset time, or the oxygen concentration of the modified air-preserving sub-space is higher than or equal to the preset oxygen The upper limit of the concentration; the shutdown condition includes: the continuous operation time of the modified atmosphere preservation system reaches the sixth preset time, or the oxygen concentration of the modified atmosphere storage subspace is lower than or equal to the preset lower limit of the oxygen concentration.
  • the method further comprises: continuously monitoring the fresh-keeping operation identifier of the modified atmosphere fresh-keeping system, and if the fresh-keeping running indicator is set to a prohibited state, shutting off the gas Adjust the fresh system.
  • a refrigerating and freezing apparatus comprising: a box body defining a storage space therein, a sealed air-conditioned fresh-keeping sub-space formed in the storage space; and a modified atmosphere preservation system
  • the utility model comprises a gas regulating membrane module and an air pump, wherein the air pump is configured to infiltrate the gas of the modified air conditioning sub-space through the air-conditioning membrane module to form a gas atmosphere for food preservation in the atmosphere-preserving sub-space of the storage space;
  • the system is configured to provide cooling capacity to the storage space;
  • the controller is configured to control the start and stop of the modified atmosphere preservation system and the refrigeration system, and is further configured to: obtain a fresh-keeping operation indicator of the modified atmosphere preservation system, and keep the fresh-keeping operation identifier according to the refrigeration and freezing
  • the operation event of the device is set, and indicates whether the operation of the modified atmosphere storage system is allowed.
  • the operation events of the refrigeration and freezing device include at least: the running time of the refrigeration and freezing device, the start-stop event of the refrigeration system, the event that the storage space is opened and closed, The event that the modified atmosphere storage space is opened and closed; in the case that the fresh-keeping operation indicator is allowed to operate the modified atmosphere preservation system, Atmosphere in the case whether the system satisfies a predetermined start condition is satisfied and the condition of the boot, the system starts to modified atmosphere Atmosphere gas subspace is adjusted until the system reaches a preset Atmosphere shutdown conditions.
  • the controller is further configured to: after the cooling system is started, set the fresh-keeping running flag to a prohibited state, and set the fresh-keeping running flag to an allowable state after the first preset time of the cooling system being turned off; After the frequent opening time of the refrigerating and freezing device, the fresh-keeping running flag is set to the prohibited state, and after waiting for the frequent opening time period, the fresh-keeping running flag is set to the permission state; after the storage space is opened, the fresh-keeping running flag is set to The state is prohibited, and the freshness running flag is set to the permission state in the case where the storage space is closed for a second preset time and the modified air storage subspace is continuously closed for the third preset time.
  • the controller is further configured to: continuously monitor the fresh-keeping operation identifier of the modified atmosphere fresh-keeping system, and if the fresh-keeping operation identifier is set to the prohibited state, turn off the start of the modified atmosphere fresh-keeping system.
  • the refrigerating and freezing device of the present invention and the controlled atmosphere freshening control method thereof creatively propose to use a gas regulating membrane (for example, an oxygen-rich membrane) module to discharge oxygen in the air in the closed atmosphere-preserving sub-space into the space, thereby being in the space Get a nitrogen-rich oxygen-poor or other gas atmosphere that is good for food preservation.
  • a gas regulating membrane for example, an oxygen-rich membrane
  • the nitrogen-rich and oxygen-poor gas atmosphere can reduce the oxygen content in the storage space of fruits and vegetables, reduce the aerobic respiration of fruits and vegetables, and at the same time ensure the basic respiration and prevent anaerobic respiration of fruits and vegetables, thereby achieving the purpose of long-term preservation of fruits and vegetables.
  • the invention controls the startup control of the modified atmosphere fresh-keeping system
  • the optimization is carried out, and the conditions for allowing the modified atmosphere fresh-keeping system to be activated are set by using the fresh-keeping operation mark, thereby avoiding the influence of the modified atmosphere fresh-keeping system and the refrigeration system, and avoiding the influence of the normal use of the refrigeration and freezing device by the user, thereby improving the use of the user.
  • the conditions for allowing the modified atmosphere fresh-keeping system to be activated are set by using the fresh-keeping operation mark, thereby avoiding the influence of the modified atmosphere fresh-keeping system and the refrigeration system, and avoiding the influence of the normal use of the refrigeration and freezing device by the user, thereby improving the use of the user.
  • the conditions for allowing the modified atmosphere fresh-keeping system to be activated are set by using the fresh-keeping operation mark, thereby avoiding the influence of the modified atmosphere fresh-keeping system and the refrigeration system, and avoiding the influence of the normal use of the refrigeration and freezing device by the user, thereby improving the use of the user.
  • the refrigerating and freezing device of the invention and the controlled atmosphere freshening control method thereof also optimize the starting condition and the shutdown strip of the modified atmosphere freshening system, thereby ensuring the fresh-keeping effect on the one hand, and avoiding the long-term maintenance of the modified atmosphere fresh-keeping system on the other hand. Waste of energy consumption caused by inefficient operation.
  • FIG. 1 is a schematic block diagram of a refrigerating and freezing apparatus according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing the principle of controlled atmosphere preservation of a refrigerating and freezing apparatus according to an embodiment of the present invention
  • Figure 3 is a schematic structural view of a refrigerating and freezing apparatus according to an embodiment of the present invention.
  • Figure 4 is a schematic view of another perspective of the structure shown in Figure 3;
  • Figure 5 is a schematic partial structural view of a refrigerating and freezing apparatus according to an embodiment of the present invention.
  • Figure 6 is a schematic exploded view of the structure shown in Figure 5;
  • Figure 7 is an exploded view of a gas regulating membrane module in a refrigerating and freezing apparatus according to an embodiment of the present invention
  • Figure 8 is a schematic block diagram of a control system of a refrigerating and freezing apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a controlled atmosphere freshening control method of a refrigerating and freezing apparatus according to an embodiment of the present invention.
  • FIG. 10 is a schematic block diagram showing a flow control method of a controlled atmosphere fresh-keeping apparatus of a refrigerating and freezing apparatus according to an embodiment of the present invention
  • FIG. 11 is a schematic flow chart of determining a gas-conditioning fresh-keeping subspace in a controlled atmosphere fresh-keeping control method of a refrigerating and freezing apparatus according to an embodiment of the present invention
  • FIG. 12 is a schematic diagram of a start-up determination of a modified atmosphere freshening system according to an oxygen concentration in a controlled atmosphere freshening control method of a refrigerating and freezing apparatus according to an embodiment of the present invention
  • Fig. 13 is a schematic diagram showing the start-up determination of the modified atmosphere fresh-keeping system 80 according to time in the controlled atmosphere fresh-keeping control method of the refrigerating and freezing apparatus according to an embodiment of the present invention.
  • the refrigerating and freezing device of the embodiment of the invention adopts the atmosphere-preserving and fresh-keeping technology to form a gas atmosphere in the atmosphere-preserving sub-space to satisfy the storage and release requirements of the articles.
  • the refrigerating and freezing apparatus generally includes a tank 20, an air conditioning system 80, a refrigeration system 70, and a controller 110.
  • the inside of the box body 20 defines a storage space, and a sealed atmosphere-preserving sub-space is formed in the storage space.
  • the modified atmosphere preservation system 80 includes a gas regulating membrane module 30 and an air pump 40.
  • the air pump 40 infiltrates the gas in the modified air conditioning sub-space through the air-conditioning membrane module 30 to form a gas atmosphere for food preservation in the atmosphere-preserving sub-space of the storage space.
  • the refrigeration system 70 is used to provide cooling to the storage space.
  • the controller 110 can control the fresh air conditioning system 80 and the refrigeration system 700 to start and stop according to the operation of the refrigerating and freezing device.
  • the modified atmosphere freshening system 80 uses a gas regulating membrane to form a gas atmosphere in the modified atmosphere sub-space to meet the storage requirements of the articles.
  • the gas-adjusting membrane also known as the oxygen-rich membrane
  • the gas regulating film is generally used for making Prepare oxygen for use in medical, fermentation, and combustion applications.
  • the refrigerating and freezing device uses the gas regulating membrane to discharge oxygen, so that the oxygen concentration in the modified air conditioning sub-space is lowered, and a gas atmosphere conducive to food preservation is realized.
  • the modified atmosphere preservation technology extends the food storage life by adjusting the gas atmosphere (gas composition ratio or gas pressure) of the enclosed space in which the storage object is located, and the basic principle is: in a certain closed space ( In the modified atmosphere space, a gas atmosphere different from the normal air component is obtained through the gas regulating membrane to suppress physiological and biochemical processes and microbial activities leading to spoilage of the stored matter (usually food).
  • the modified atmosphere preservation will be specifically directed to a modified atmosphere preservation technique that adjusts the proportion of gas components.
  • normal air components include (by volume percent, hereinafter the same): about 78% nitrogen, about 21% oxygen, about 0.939% rare gases ( ⁇ , ⁇ , argon, krypton, xenon, ⁇ ), 0.031% of carbon dioxide, and 0.03% of other gases and impurities (for example, ozone, nitrogen monoxide, nitrogen dioxide, water vapor, etc..
  • gases and impurities for example, ozone, nitrogen monoxide, nitrogen dioxide, water vapor, etc.
  • the nitrogen-enriched gas refers to a gas having a nitrogen content exceeding the nitrogen content in the above-mentioned normal air, for example, the nitrogen content may be 95%. ⁇ 99%, or even higher; and the nitrogen-rich and oxygen-poor fresh gas atmosphere refers to a gas atmosphere in which the nitrogen content exceeds the above-mentioned normal air nitrogen content and the oxygen content is lower than the above-mentioned normal air oxygen content.
  • the air-conditioning system is economically compacted and quieted by the above-described air-conditioning membrane module, and is suitable for use in a small-sized refrigerating and freezing apparatus such as a refrigerator.
  • 2 is a schematic view showing the principle of air conditioning and preservation of a refrigerating and freezing apparatus according to an embodiment of the present invention
  • FIG. 3 is a schematic structural view of a refrigerating and freezing apparatus according to an embodiment of the present invention
  • FIG. 4 is another structure of the structure shown in FIG. Schematic diagram of the perspective.
  • an embodiment of the present invention provides a refrigerating and freezing apparatus, which may include a tank 20, a door body (not shown), a gas regulating membrane module 30, an air pump 40, and a refrigeration system 70.
  • a storage space is defined in the casing 20 of the refrigerating and freezing apparatus, and the storage space can be configured as a refrigerating compartment 27, a freezing compartment 25, a changing greenhouse 26, and the like according to the cooling temperature.
  • the refrigerating and freezing device may be a refrigerator having at least a refrigerating chamber 27 and a freezing chamber 25.
  • the refrigeration system can be a conventional compression refrigeration system that provides refrigeration to the storage compartment by, for example, direct cooling and/or air cooling to provide the storage compartment with a desired storage temperature.
  • the storage temperature of the refrigerator compartment 27 may be 2 to 9 ° C, or may be 4 to 7 ° C; the storage temperature of the freezer compartment 25 may be -22 to -14 ° C, or may be -20 to 16 °C.
  • the freezing compartment 25 is disposed below the refrigerating compartment 27, and the changing greenhouse 26 is disposed between the freezing compartment 25 and the refrigerating compartment 27.
  • the temperature within the freezer compartment 25 typically ranges from -14 °C to -22 °C.
  • the variable greenhouse 26 can be adjusted as needed to store the appropriate food.
  • a sealed atmosphere-preserving sub-space 271 is formed in the storage space, and the modified-air-preserving sub-space 271 may be disposed in any of the above-described compartments, and preferentially disposed in the refrigerating compartment 27 and the changing greenhouse 26.
  • the modified atmosphere sub-space 271 may be a lower storage space provided in the refrigerating compartment 27.
  • the door body is pivotally mounted to the case 20 and is configured to open or close a storage space defined by the case 20.
  • a small door may be disposed on the inner side of the door body to open or close the modified air-preserving sub-space 271, thereby forming a double-layered door structure.
  • the refrigerated freezer can utilize the drawer to form the modified atmosphere sub-space 271 described above.
  • the drawer may have a drawer body 22 and a drawer body 23.
  • the atmosphere-preserving sub-space 271 is formed by the drawer type storage compartment.
  • the drawer cylinder 22 has a front opening and is disposed in the storage space (for example, a lower portion of the refrigerating chamber 27).
  • the drawer body 23 is slidably mounted to the drawer cylinder 22, and the front end of the drawer body 23 is provided with an end plate, and a drawer
  • the barrel 22 is fitted to close the opening of the modified atmosphere sub-space 271.
  • One specific way is that the drawer body 23 can be operatively drawn outwardly and inwardly from the forward opening of the drawer body 22.
  • the end plate closes the opening of the modified atmosphere sub-space 271 by the sealing structure.
  • the drawer body 22 may form a seal with the end plate of the drawer body 23, which may be properly leaked to achieve air pressure balance.
  • the air pressure balance can be ensured by providing millimeter-scale micropores or one-way valves on the drawer body 22.
  • the refrigeration system 70 may be a refrigeration cycle system composed of a compressor, a condenser, a throttle device, an evaporator, and the like.
  • the compressor is mounted in the compressor compartment 24.
  • the evaporator is configured to provide cooling directly or indirectly into the storage space.
  • the refrigerating and freezing device is a domestic compression type direct cooling refrigerator
  • the evaporator may be disposed outside or inside the rear wall surface of the inner casing 21.
  • the casing 20 further has an evaporator chamber, the evaporator chamber is connected to the storage space through the air passage system, and an evaporator is arranged in the evaporator chamber, and a fan is arranged at the outlet.
  • the gas regulating membrane module 30 has a gas regulating membrane and defines an oxygen-rich gas collecting chamber.
  • the pressure of the oxygen-rich gas collecting chamber is lower than the pressure of the surrounding environment, the ambient gas (most of the oxygen) passes through the gas regulating membrane and enters the gas. Adjust the oxygen-rich gas collection chamber.
  • the other side of the air-conditioning membrane may be in direct contact with the modified atmosphere sub-space 271 or with a circulation flow path (or a circulation space) connected to the modified atmosphere sub-space 271, so that the oxygen-rich gas collection chamber can be
  • the atmosphere gas in the air in the modified air conditioning subspace 271 is passed through the gas regulating membrane into the oxygen-rich gas collecting chamber, and in the case of using the oxygen-rich membrane, the modified air conditioning subspace 271
  • the oxygen is extracted so that the modified atmosphere sub-space 271 forms an oxygen-poor gas atmosphere.
  • the air pump 40 can be disposed in the compressor chamber 24, and the inlet end of the air pump 40 communicates with the oxygen-rich gas collecting chamber of the gas regulating membrane assembly 30 via the line 50, and is configured to extract the gas of the oxygen-rich gas collecting chamber outward. At least a portion of the oxygen in the modified atmosphere sub-space 271 is passed through the gas-regulating membrane into the oxygen-rich gas collection chamber, thereby reducing the concentration of oxygen in the modified atmosphere.
  • the air pump 40 is configured to extract oxygen-rich gas from the oxygen-rich gas collection chamber to reduce the oxygen concentration of the modified atmosphere sub-space 271. In order to obtain a gas atmosphere rich in nitrogen and oxygen in the modified atmosphere sub-space 271 to facilitate food preservation.
  • the refrigerating and freezing device of the present invention can form a gas atmosphere rich in nitrogen and oxygen in the modified atmosphere sub-space 271 to facilitate food preservation, and the gas atmosphere reduces the oxygen content of the fruit and vegetable by reducing the oxygen content in the storage space of the fruit and vegetable, and simultaneously It ensures the basic respiration and prevents anaerobic respiration of fruits and vegetables, thus achieving the purpose of long-term preservation of fruits and vegetables.
  • the gas atmosphere also has a large amount of gas such as nitrogen gas, which does not reduce the cooling efficiency of articles in the subspace, and can effectively store fruits and vegetables and the like.
  • the air pump 40 is disposed in the compressor compartment 24, and can fully utilize the space of the compressor compartment 24 without occupying other places, so that the extra volume of the refrigerating and freezing apparatus is not increased, and the structure of the refrigerating and freezing apparatus can be made compact.
  • the air pump 40 and the compressor may be disposed on both sides of the compressor compartment 24, respectively, spaced apart from each other such that the distance of the air pump 40 from the compressor is relatively long, reducing noise superposition and waste heat stacking.
  • the air pump 40 may be disposed at one end of the compressor nacelle 24 adjacent to the pivoting side of the door body.
  • the air pump 40 can be disposed at any position of the compressor bay 24.
  • the air pump 40 may also be disposed adjacent to the compressor, such as the air pump 40 disposed at one end of the compressor bay 24 and between the compressor and the sidewall of the compressor bay 24.
  • the air pump 40 may be mounted in a sealed box that may be mounted within the compressor compartment 24 by a mounting floor.
  • the sealed box can largely block the noise and/or waste heat of the air pump 40 from propagating outward.
  • FIG. 5 is a schematic partial structural view of a refrigerating and freezing apparatus according to an embodiment of the present invention
  • FIG. 6 is a schematic exploded view of the structure shown in FIG. 5, and the air conditioning membrane module 30 may be disposed in a cylinder of the drawer cylinder 22. It is preferably disposed on the top wall of the drawer body 22.
  • a receiving chamber 31 that communicates with the modified atmosphere sub-space 271 is disposed in the top wall of the drawer cylinder 22.
  • At least one first vent hole 222 and at least one second vent hole spaced apart from the at least one first vent hole 222 are defined in a wall surface between the accommodating cavity 31 of the top wall of the drawer cylinder 22 and the modified air conditioning subspace 271.
  • the receiving chamber 31 and the modified atmosphere sub-space 271 are respectively connected at different positions, and the accommodating chamber 31 and the modified atmosphere sub-space 271 are communicated via the at least one first communication hole 222 and the at least one second communication hole 223;
  • the assembly 30 is disposed in the accommodating cavity 31 and may be disposed above the at least one second communication hole 223.
  • the accommodating chamber 31 is configured to be air-conditioned and fresh-keeping.
  • the 271 is connected to the circulation space such that the gas regulating membrane 36 in the gas regulating membrane module 30 is in contact with the gas in the modified atmosphere sub-space 271.
  • the first communication hole 222 and the second communication hole 223 are both small holes, and the number may be plural.
  • the inside of the top wall of the first drawer body 22 has a recessed groove.
  • the air conditioning membrane module 30 is disposed in a recessed groove of the top wall of the first drawer body 22.
  • a fan 60 may be disposed in the accommodating chamber 31 of the first sealing assembly 71, and the fan 60 is formed to sequentially form at least a first venting hole 222, a receiving cavity 31 and at least one second communicating air hole 223 return to the airflow of the modified air conditioning subspace 271, thereby causing the gas of the modified air conditioning subspace 271 to enter the receiving cavity via the first communication hole 222. 31, and the gas in the accommodating chamber 31 is introduced into the modified atmosphere sub-space 271 via the second communication hole 223, thereby forming an air flow via the air-conditioning membrane module 30.
  • the fan 60 is disposed at the position of the accommodating cavity 31 above the at least one first communication hole 222, which causes the gas of the modified atmosphere sub-space 271 to enter the accommodating cavity 31 via the at least one first communication hole 222, and the inside of the accommodating cavity 31
  • the gas enters the modified-air-preserving sub-space 271 via the at least one second communication hole 223 to receive oxygen from the gas passing through the gas regulating membrane module 30.
  • the fan 60 is preferably a centrifugal fan and can be disposed at the first communication hole 222 in the gas collection chamber 31. That is, the centrifugal fan 60 is located above the at least one first communication hole 222, and the air inlet is directed to the first communication hole 222. The air outlet of the centrifugal fan 60 can face the air conditioning membrane module 30. At least one second communication hole 223 may be located below the air conditioning membrane module 30.
  • the top wall of the first drawer body 22 includes a lower plate portion 224 and a cover portion 225, which together define a receiving cavity 31.
  • an upper surface of the lower plate portion 224 may form a recessed groove, and the cover portion 225 is covered in the recessed groove.
  • At least one first communication hole 222 is disposed at a front portion of the top wall, and at least one second communication hole 223 is disposed at a rear portion of the top wall.
  • the centrifugal fan 60 is disposed at the front of the accommodating chamber 31, and the air conditioned membrane module 30 is disposed at the rear of the accommodating chamber 31.
  • the gas regulating membrane module 30 has a gas regulating membrane 36 and an oxygen-rich gas collecting chamber, and one side of the gas regulating membrane 36 faces the oxygen-rich gas collecting chamber so that the pressure in the oxygen-rich gas collecting chamber is smaller than the other side of the gas regulating membrane 36 At the time of the pressure, oxygen in the air on the other side of the gas-conditioning membrane 36 is passed through the gas regulating membrane 36 into the oxygen-rich gas collecting chamber.
  • the air-conditioning membrane module 30 can be in contact with the circulation flow path (ie, the accommodating chamber 31) that communicates with the modified atmosphere sub-space 271, so that the pressure in the oxygen-rich gas collection chamber can be less than the pressure of the modified-air-preserving sub-space 271.
  • the oxygen in the gas in the accommodating chamber 31 (from the modified atmosphere sub-space 271) is more transmitted through the gas-regulating membrane into the oxygen-rich gas collecting chamber than the nitrogen in the space airflow around the gas regulating membrane module 30. That is, the fan 60 forms oxygen in the gas stream to pass through the gas regulating membrane more than the nitrogen gas into the oxygen-rich gas collecting chamber.
  • the plurality of first sealing members 71 may adopt the same structure, and the specific sizes may be set to be the same or different as needed.
  • the air conditioning membrane module 30 may be in the form of a flat plate, and the air conditioning membrane module 30 may further include a support frame 32.
  • the support frame 32 has first and second surfaces parallel to each other, formed with a plurality of airflow passages extending on the first surface, extending on the second surface, and extending through the support frame to communicate the first surface and the second surface A plurality of gas flow channels collectively form an oxygen-rich gas collection chamber.
  • the air-conditioning membrane 36 can be two layers, which are respectively laid on both sides of the support frame 32 to close the oxygen-rich gas collecting chamber, and each layer of the air-conditioning membrane 36 can be formed by laminating one or more gas-regulating membranes.
  • the gas permeating through the gas regulating membrane 36 is a complicated process, and the permeation mechanism is generally that the gas molecules are first adsorbed to the surface of the gas regulating membrane 36, and then the difference in dissolution and diffusion coefficients in the gas regulating membrane in the gas regulating membrane 36 is observed. To achieve gas separation.
  • the oxygen having a high permeation rate is concentrated on the permeate side of the gas regulating membrane 36 to be concentrated in the oxygen-rich gas collecting chamber.
  • the support frame 32 may include a frame, a rib plate and/or a flat plate disposed in the frame, and an air flow passage between the ribs, between the ribs and the flat plate, and the surface of the rib and the surface of the flat plate may be A groove is formed to form an air flow passage.
  • the ribs and/or the flat plate may increase the structural strength and the like of the air-conditioning membrane module 30. That is, the support frame 32 has a first surface and a second surface that are parallel to each other, and a plurality of airflow passages communicating with the first surface and the second surface are formed inside. Road. Two gas regulating films 36 are respectively laid on the first surface and the second surface of the support frame 32 to form an oxygen-rich gas collecting chamber together with a plurality of gas flow passages of the support frame 32.
  • the support frame 32 includes a venting aperture 33 in communication with the plurality of airflow passages described above, disposed on the rim 32 to allow oxygen in the oxygen-rich gas collection chamber to be output.
  • the air suction hole 33 is in communication with the air suction device 41.
  • the air-conditioning film 36 is first attached to the frame by the double-sided tape 34 and then sealed by the sealant 35.
  • the plurality of airflow passages formed inside the support frame 32 may be one or more cavities in communication with the suction holes 33. In some embodiments, the aforementioned plurality of airflow channels formed inside the support frame 32 may have a mesh structure.
  • the support frame 32 may include a frame, a rib plate and/or a flat plate disposed in the frame, and an air flow passage between the ribs, between the ribs and the flat plate, the surface of the rib plate, and the surface of the flat plate. Grooves may be formed in the upper portion to form an air flow passage.
  • the ribs and/or the flat plate may increase the structural strength and the like of the air-conditioning membrane module 30.
  • the support frame 32 has first and second surfaces parallel to each other, and the support frame 32 is formed to extend on the first surface, extend on the second surface, and penetrate the support frame 32 to communicate the first surface and the second surface.
  • the support frame 32 is formed with a plurality of first air flow passages extending on the first surface and a plurality of second air flow passages extending on the second surface, and the first air flow passage and the second air flow passage They are connected by a third air flow passage. All of the gas flow channels together form an oxygen-rich gas collection chamber.
  • the one or more air-conditioning membranes form two planar air-conditioning membrane layers which are respectively laid on the first surface and the second surface of the support frame to form a flat-shaped air-conditioning membrane module 30.
  • the support frame 32 is formed with a suction hole 33 communicating with the above-described air flow passage, and the air suction hole 33 communicates with the oxygen-rich gas collecting chamber for connecting the inlet end of the air pump 40, thereby allowing the oxygen-rich gas in the oxygen-rich gas collecting chamber to be output.
  • the oxygen-enriched gas collecting chamber 38 is in a negative pressure state, and oxygen in the air outside the gas regulating membrane module 30 continues to pass through the gas regulating membrane 36 into the oxygen-rich gas collecting chamber.
  • the support frame 32 as a whole may have a generally rectangular frame.
  • the support frame 32 can include a bezel, a plurality of first ribs, and a plurality of second ribs.
  • the plurality of first ribs are longitudinally spaced apart inside the frame and extend in the lateral direction, and one side surface of the plurality of first ribs forms a first surface.
  • a plurality of second ribs are laterally spaced apart and extend in a longitudinal direction on the other side surface of the plurality of first ribs, and a side surface of the plurality of second ribs away from the first rib forms a second surface . That is, the plurality of second ribs are disposed on one side surface of the plurality of first ribs.
  • the surfaces of the plurality of first ribs and the plurality of second ribs respectively form a first surface and a second surface; that is, surfaces of the plurality of first ribs and the plurality of second ribs Forming a first surface; a surface of the plurality of second ribs opposite to the plurality of first ribs forming a second surface.
  • a plurality of airflow passages are formed between adjacent first ribs, between adjacent second ribs, and between adjacent first ribs and second ribs.
  • the gap between the two adjacent first ribs forms a first air flow passage extending on the first surface
  • the gap between the two adjacent second ribs forms a second extension on the second surface
  • the two air flow passages, the gap between the adjacent first ribs and the second ribs form a third air flow passage that penetrates the first surface and the second surface through the support frame 32. That is, the intersecting structure formed by all of the first ribs and all of the second ribs forms the aforementioned plurality of air flow passages.
  • the support frame 32 is provided with a plurality of first ribs extending longitudinally and extending in the lateral direction inside the frame and a plurality of second ribs extending laterally and longitudinally on one side surface of the plurality of first ribs.
  • the plate thus ensures the continuity of the air flow passage on the one hand, and greatly reduces the volume of the support frame on the other hand, and greatly enhances the strength of the support frame 32.
  • the above structure of the support frame 32 ensures that the air-conditioning membrane 36 can obtain sufficient support, and can maintain a good flatness even in the case of a large negative pressure inside the oxygen-rich gas collecting chamber, thereby ensuring the gas regulating film.
  • the service life of assembly 30 is provided with a plurality of first ribs extending longitudinally and extending in the lateral direction inside the frame and a plurality of second ribs extending laterally and longitudinally on one side surface of the plurality of first ribs.
  • the air vent 33 may be disposed on the lateral side of the frame in the longitudinal middle portion of the frame. This arrangement is equivalent to pumping air from the center of the air-conditioning membrane module 30, which is advantageous for the air-conditioning membrane 36 to be uniformly ventilated.
  • the air vent 33 can be a stepped hole or a stepped hole to When it is connected to the air pump 40 via a hose, the airtightness of the joint is ensured.
  • the above structure of the support frame 32 ensures that the air-conditioning membrane 36 can obtain sufficient support, and can maintain a good flatness even in the case of a large negative pressure inside the oxygen-rich gas collecting chamber, thereby ensuring the gas regulating film.
  • the service life of assembly 30 ensures that the air-conditioning membrane 36 can obtain sufficient support, and can maintain a good flatness even in the case of a large negative pressure inside the oxygen-rich gas collecting chamber, thereby ensuring the gas regulating film.
  • the intake end of the air pump 40 is connected to the air suction hole 33 via the air suction line 51 to communicate with the oxygen-rich gas collecting chamber of the air conditioning membrane module 30 in the plurality of first airtight components 71, and is configured to set the oxygen-rich gas collecting chamber
  • the gas is extracted outward to continuously reduce the oxygen content in the modified atmosphere sub-space 271, thereby forming a gas atmosphere rich in nitrogen and oxygen in the modified atmosphere sub-space 271 to facilitate food preservation.
  • the air pump 40 can be disposed in the compressor compartment 24, and can fully utilize the space of the compressor compartment 24 without occupying other places, so that the extra volume of the refrigerating and freezing apparatus is not increased, and the structure of the refrigerating and freezing apparatus can be made compact.
  • the controller 110 can control the above-described refrigerating system 70 and the fresh air preserving system 80, and judge the starting condition and the shutdown condition of the refrigerating system 70 and the fresh air preserving system 80.
  • Control of the modified atmosphere freshening system 80 therein may include control of the blower 60 and the extraction pump 40.
  • Figure 8 is a schematic block diagram of a control system of a refrigerating and freezing apparatus in accordance with one embodiment of the present invention.
  • the modified atmosphere storage opening/closing detecting device 82 and the refrigerating chamber opening and closing detecting device 72 can be used to detect the compartment (for example, the refrigerating chamber 27) where the modified atmosphere subspace 271 is located, and the modified atmosphere subspace 271 is opened and closed.
  • the event uses a Hall device or a magnetic sensitive device to detect the opening and closing action of the door body or the opening and closing action of the end plate of the drawer body 23 and the drawer cylinder 22.
  • the modified-air-preserving sub-space opening and closing detecting means 82 may be respectively disposed on the end plate of the drawer body 23 and the drawer cylinder 22; the refrigerating compartment opening and closing detecting means 72 can be respectively disposed on the casing 20 and the corresponding door body.
  • the temperature sensor 84 is for detecting the temperature of the storage compartment in the refrigerating and freezing apparatus, and may include, for example, a refrigerating temperature sensor provided in the refrigerating compartment 27, a freezing temperature sensor in the freezing compartment 25, and a temperature change sensor in the changing chamber 26.
  • the temperature value detected by temperature sensor 84 can be used to compare with the set temperature to determine if refrigeration system 70 (including compressor and refrigeration fan, chiller, damper) is required to be activated.
  • the oxygen concentration sensor 87 is disposed in the modified atmosphere sub-space 271 for measuring the gas atmosphere index in the modified atmosphere sub-space 271. It can use various types of oxygen concentration sensors such as diaphragm type galvanic battery type, electrochemical, catalytic combustion, constant potential electrolytic type, etc. In some alternative embodiments, the oxygen concentration sensor 87 can also be replaced by a gas analyzer. For measuring the gas content in the modified atmosphere sub-space 271, including the oxygen content, may also include nitrogen content, carbon dioxide content, and the like. The oxygen concentration sensor 87 can be configured as desired, and in some embodiments, can be controlled by controlling the start-stop time of the modified atmosphere storage system 80 without having to control the oxygen concentration.
  • the alarm reminder 86 can present information to the user by means of display, sound and light, remote alarm, and the like.
  • the controller 110 as the control core of the refrigerating and freezing device of the embodiment, can be configured and controlled by various microprocessors (including a single chip microcomputer, a digital signal processor, etc.) and its auxiliary circuits (power source, memory, clock circuit). The program is implemented. In order to ensure the coordinated operation of the refrigeration system 70 and the modified atmosphere preserving system 80, in the refrigerating and freezing apparatus of the present embodiment, the controller 110 may determine whether to allow the modified atmosphere preserving system 80 to start work by setting a fresh-keeping operation indicator.
  • the freshness running indicator may be a flag in a register of the controller 110, which includes at least two states: respectively indicating that the modified atmosphere preservation system 80 is allowed to operate and the modified atmosphere preservation system 80 is prohibited from operating.
  • the controller 110 may first acquire the fresh running indicator of the modified atmosphere preservation system 80.
  • the freshness keeping indicator is set according to an operation event of the refrigerating and freezing apparatus, and indicates whether or not the modified atmosphere preservation system 80 is allowed to operate.
  • the operation events of the refrigerating and freezing apparatus include at least an operation timing of the refrigerating and freezing apparatus, an opening and closing event of the refrigerating system 70, an event in which the storage space is opened and closed, and an event in which the modified air preserving subspace 271 is opened and closed.
  • the operation events of the above-described refrigerating and freezing apparatus can be determined by various sensors provided by the refrigerating and freezing apparatus, detection means, and control commands issued by the controller 110.
  • the running time of the refrigerating and freezing device can be determined by the clock of the refrigerating and freezing device
  • the start-stop event of the refrigerating system 70 can be determined by detecting the state of the compressor or by a control command sent from the controller 110 to the refrigerating system 70, and the storage space is opened.
  • the closed event can be detected by the refrigerator compartment opening/closing detecting device 72, and the event that the air-conditioning fresh-keeping subspace 271 is opened and closed can be detected by the air-conditioning fresh-keeping subspace 271 opening and closing detecting device 82.
  • the controller 110 may determine whether the modified atmosphere freshening system 80 satisfies the preset starting condition, and if the starting condition is satisfied, start the modified atmosphere freshening system 80 to The gas of the modified atmosphere sub-space 271 is adjusted until the modified atmosphere storage system 80 reaches a preset shutdown condition.
  • the process of the controller 110 setting the fresh-keeping running identifier may include: setting the fresh-keeping running identifier to a prohibited state in an initial state.
  • the freshness operation flag is set to the prohibition state, and after the first preset time of the refrigeration system 70 is turned off, the freshness operation flag is set to the permission state.
  • the fresh-keeping running flag is set to the prohibited state, and after waiting for the frequent opening time period to elapse, the fresh-keeping running flag is set to the permitted state.
  • the fresh-keeping running flag is set to the prohibited state, and after the second preset time when the storage space is closed and the modified-air-preserving sub-space 271 is continuously closed for the third preset time, Set the freshness run flag to the allowed state.
  • the first preset time, the second preset time, and the third preset time may be set according to operating conditions and specifications of the refrigerating and freezing device.
  • the first preset time may be determined according to the time when the compressor is stopped after the refrigeration system 70 is turned off and the heat dissipation reaches a certain degree, thereby avoiding heat accumulation and noise superposition of the air pump 40 and the compressor.
  • the second preset time may be set according to the time when the refrigeration system 70 resumes normal operation after the door of the storage compartment is closed.
  • the third preset time may be set according to the gas leakage condition of the modified atmosphere sub-space 271.
  • the modified atmosphere-preserving sub-space 271 may not be opened, and the nitrogen-rich and oxygen-poor gas atmosphere cannot satisfy the fresh-keeping storage.
  • the required time is set.
  • the frequent opening period of the refrigerating and freezing device can be summarized according to the user's usage habits, for example, the daily opening period is more than the predetermined number of times in the daily cycle.
  • the controller 110 can determine the power-on condition according to the operation state of the modified air-conditioning subspace 271 and the modified atmosphere preservation system 80.
  • the determination of the startup and shutdown conditions can be made based on the oxygen concentration.
  • the optimal storage environment of different kinds of foods may have different oxygen concentration ranges.
  • the oxygen concentration range corresponding to the plurality of types of foods may be determined in advance by testing, and the user inputs through the user input in the modified atmosphere sub-space 271.
  • the automatic identification method determines the type information of the food and determines the corresponding oxygen concentration range.
  • the starting condition may be that the oxygen concentration of the modified atmosphere sub-space 271 is higher than or equal to a preset upper limit of the oxygen concentration, that is, in the case that the oxygen concentration of the modified air-preserving sub-space 271 is higher than or equal to the upper limit of the oxygen concentration, the startup is required.
  • the air pump 40 and the fan 60 The shutdown condition may be that the oxygen concentration of the modified atmosphere sub-space 271 is lower than or equal to a preset lower limit of the oxygen concentration, that is, when the oxygen concentration of the modified atmosphere sub-space 271 is higher than or equal to the upper limit of the oxygen concentration, the pumping needs to be turned off.
  • the air pump 40 and the fan 60 complete the air conditioning and fresh-keeping operation.
  • Another optional on-off condition may be that the pumping efficiency of the air pump 40 and the gas leakage of the modified air conditioning subspace 271 are tested in advance, and the time for the air pump 40 to complete the air conditioning and air pumping is determined.
  • the booting condition may include: the time from the last modified atmosphere storage system 80 to complete the gas adjustment of the modified atmosphere sub-space 271 exceeds the fifth preset time.
  • the corresponding shutdown conditions may include: modified atmosphere preservation system The 80 continuous operation reaches the sixth preset time.
  • the fifth preset time may also be adjusted according to the operating state of the modified air conditioning subspace 271. For example, the air conditioning fresh subspace 271 is not continuously opened for a relatively long period of time, and the fifth preset time may be appropriately extended.
  • the fresh-keeping running indicator of the modified atmosphere fresh-keeping system 80 can be continuously monitored, and if the fresh-keeping running indicator is set to the prohibited state (that is, the fresh-keeping running flag needs to be set to be prohibited)
  • the state of the refrigerating and freezing device operating time for example, the refrigeration system 70 is turned on, the storage space is opened, and the like, and the activated gas fresh-keeping system 80 is turned off.
  • the controller 110 preferably activates the refrigeration system 70 to ensure that the temperature of the storage space meets the storage requirements, and then controls the modified atmosphere preservation system 80 accordingly, thereby avoiding interaction between the modified atmosphere preservation system 80 and the refrigeration system 70, and simultaneously The influence of the user's normal use of the refrigerating and freezing device is avoided, and the user experience is improved.
  • the embodiment further provides a controlled atmosphere freshening control method for the refrigerating and freezing device, which can be executed by the controller 110 to control the modified atmosphere storage system 80 of the refrigerating and freezing device of the above embodiment, thereby Guarantee the effect of keeping the atmosphere fresh.
  • 9 is a schematic diagram of a controlled atmosphere freshening control method of a refrigerating and freezing apparatus according to an embodiment of the present invention.
  • the modified atmosphere freshening control method of the refrigerating and freezing apparatus of this embodiment may generally include:
  • Step S902 obtaining a fresh-keeping operation identifier of the modified atmosphere fresh-keeping system 80
  • Step S904 if the fresh-keeping operation indicator is to allow the operation of the modified atmosphere fresh-keeping system 80, it is determined whether the modified-air preservation system 80 satisfies the preset power-on condition;
  • step S906 the air conditioning system 80 is activated to adjust the gas of the modified air conditioning subspace 271 until the preset air conditioning system 80 reaches the preset shutdown condition.
  • Step S902 can determine whether the modified atmosphere preservation system 80 is allowed to operate under the current working condition according to the freshness running indicator.
  • the fresh-keeping operation indicator is set according to an operation event of the refrigerating and freezing device, and indicates whether the operation of the fresh-keeping and fresh-keeping system 80 is permitted.
  • the operation events of the refrigerating and freezing device include at least: an operation time of the refrigerating and freezing device, a start-stop event of the refrigerating system 70, The event that the storage space is opened and closed, and the event that the modified atmosphere subspace 271 is opened and closed.
  • the influencing factors affecting the setting of the fresh-keeping operation mark include at least the state of the refrigeration system 70, the prediction of the user using the refrigerating and freezing device, and the opening event of the refrigerating and freezing device.
  • the step of setting the freshness running indicator according to the running event of the refrigerating and freezing device may include:
  • the freshness operation flag is set to the prohibition state, and after the first predetermined time when the refrigeration system 70 is turned off, the freshness operation flag is set to the permission state.
  • the fresh-keeping running flag After entering the frequent opening time period of the refrigerating and freezing device, the fresh-keeping running flag is set to the prohibited state, and after waiting for the frequent opening time period to elapse, the fresh-keeping running flag is set to the permitted state.
  • the fresh-keeping running flag is set to a prohibited state; and after the second preset time when the storage space is closed and the modified-air-preserving sub-space 271 is continuously closed for the third preset time, Set the freshness run flag to the allowed state.
  • the first preset time, the second preset time, and the third preset time may be set according to operating characteristics of the refrigerating and freezing device. For example, the first preset time may be determined according to the time when the compressor is stopped after the refrigeration system 70 is turned off and the heat dissipation reaches a certain degree, thereby avoiding heat accumulation and noise superposition of the air pump 40 and the compressor.
  • the second preset time may be set according to the time when the refrigeration system 70 resumes normal operation after the door of the storage compartment is closed.
  • the third preset time may be set according to the gas leakage condition of the modified atmosphere sub-space 271. For example, according to the test, the modified atmosphere-preserving sub-space 271 may not be opened, and the nitrogen-rich and oxygen-poor gas atmosphere cannot satisfy the fresh-keeping storage. The required time is set.
  • the frequent opening period of the refrigerating and freezing device can be summarized according to the user's usage habits, for example, the daily opening period is more than the predetermined number of times in the daily cycle.
  • the modified atmosphere sub-space 271 After the storage space is closed, if the modified atmosphere sub-space 271 remains open for more than the fourth preset time In the meantime, output a sealed alarm message. That is, if there is a door body in which the user has closed the refrigerating and freezing compartment, but the appliance for sealing the air conditioning sub-space 271 is not closed, for example, in the case where the drawer body 23 is closed, a prompt can be made to avoid the inability to ensure the gas. The seal of the fresh-keeping sub-space 271 is adjusted.
  • the controller 110 can determine the power-on condition according to the operation state of the modified air-conditioning subspace 271 and the modified atmosphere preservation system 80.
  • the determination of the startup and shutdown conditions can be made based on the oxygen concentration.
  • the oxygen concentration range corresponding to the plurality of types of foods may be determined in advance by testing, and when the food is placed in the modified atmosphere sub-space 271, the type information of the food is determined by user input or automatic identification to determine Corresponding oxygen concentration range. Therefore, the starting condition may be that the oxygen concentration of the modified atmosphere sub-space 271 is higher than or equal to a preset upper limit of the oxygen concentration, that is, in the case that the oxygen concentration of the modified air-preserving sub-space 271 is higher than or equal to the upper limit of the oxygen concentration, the startup is required.
  • the air pump 40 and the fan 60 are examples of the oxygen concentration of the modified atmosphere sub-space 271.
  • the shutdown condition may be that the oxygen concentration of the modified atmosphere sub-space 271 is lower than or equal to a preset lower limit of the oxygen concentration, that is, when the oxygen concentration of the modified atmosphere sub-space 271 is higher than or equal to the upper limit of the oxygen concentration, the pumping needs to be turned off.
  • the air pump 40 and the fan 60 complete the air conditioning and fresh-keeping operation.
  • Another optional on-off condition may be that the pumping efficiency of the air pump 40 and the gas leakage of the modified air conditioning subspace 271 are tested in advance, and the time for the air pump 40 to complete the air conditioning and air pumping is determined.
  • the booting condition may include: the time from the last modified atmosphere storage system 80 to complete the gas adjustment of the modified atmosphere sub-space 271 exceeds the fifth preset time.
  • the corresponding shutdown condition may include: the time during which the modified atmosphere preservation system 80 continues to operate reaches a sixth preset time.
  • the fifth preset time may also be adjusted according to the operating state of the modified air conditioning subspace 271. For example, the air conditioning fresh subspace 271 is not continuously opened for a relatively long period of time, and the fifth preset time may be appropriately extended.
  • the fresh-keeping operation mark of the modified atmosphere fresh-keeping system 80 can be continuously monitored, and if the fresh-keeping running mark is set to the prohibited state (that is, the fresh-keeping running flag needs to be set to the prohibited state)
  • the operation time of the refrigerating and freezing device for example, the refrigeration system 70 is turned on, the storage space is opened, and the like, and the activated atmosphere fresh-keeping system 80 is turned off.
  • FIG. 10 is a schematic block diagram of a method for controlling a fresh air conditioning of a refrigerating and freezing apparatus according to an embodiment of the present invention.
  • the refrigerating and freezing apparatus may cyclically perform the following steps after power-on:
  • step S1002 the refrigerating and freezing apparatus is powered on, initialized, and the refrigeration system 70 and the fresh air preserving system 80 are turned off, and the compressor and the electromagnetic valve of the refrigeration system 70 are closed, and the air pump 40 and the fan 60 of the air conditioning system 80 are closed.
  • step S1004 the operating condition data of the refrigerating and freezing device is collected, including the temperature of the storage space, the oxygen concentration of the modified atmosphere sub-space 271, and the opening and closing of the door body.
  • step S1006 the control flow of the refrigeration system 70 is executed.
  • step S1008 the fresh-keeping running identifier is determined.
  • step S1010 the control flow of the modified atmosphere freshening system 80 is executed.
  • the refrigeration system 70 takes precedence over the modified atmosphere preservation system 80 during coordinated control.
  • FIG. 11 is a schematic flow chart showing the determination of the air-conditioning preservative subspace 271 after the air-conditioning fresh-keeping subspace 271 is closed in the air-conditioning preserving control method of the refrigerating and freezing apparatus according to an embodiment of the present invention.
  • the refrigerating and freezing apparatus can perform the following steps after the modified air-preserving sub-space 271 is closed. :
  • Step S1102 detecting that the modified atmosphere sub-space 271 is closed, starting to control the air-conditioning preservation system 80;
  • Step S1104 determining whether the refrigeration system 70 is in operation, and if not, ending the determination;
  • Step S1106 determining whether the closing time of the modified air conditioning subspace 271 exceeds a preset time, for example, shown in the figure. 30 minutes, if no, the judgment is over, waiting for 30 minutes to re-judge;
  • Step S1108 determining whether it is currently in the frequent opening time period, and if so, ending the determination;
  • step S1110 it is determined whether the air conditioning fresh-starting condition is met, for example, the oxygen concentration is raised to a preset upper limit of the oxygen concentration, and if not, the determination is ended;
  • step S1112 the modified atmosphere preservation system 80 is started.
  • Fig. 12 is a schematic view showing the start-up determination of the modified atmosphere freshening system 80 based on the oxygen concentration in the controlled atmosphere freshening control method of the refrigerating and freezing apparatus according to an embodiment of the present invention.
  • the refrigerating and freezing apparatus of this embodiment can perform the following steps when performing the air conditioning control:
  • Step S1202 initializing the oxygen concentration sensor 87 to start detecting the oxygen concentration in the modified atmosphere sub-space 271;
  • Step S1204 determining whether it is currently in the frequent opening time period, and if so, keeping the air conditioning fresh-keeping system 80 closed, ending the judgment;
  • Step S1206 whether the door body of the refrigerating and freezing device is opened, and if so, keeping the air conditioning system 80 closed, and ending the judgment;
  • Step S1210 if the refrigeration system 70 is running, it is determined whether the current time is a period of user activity, for example, whether it is currently between 6 o'clock and 22 o'clock, during which time the compressor is not allowed to operate under any working condition.
  • the modified atmosphere preservation system 80 is simultaneously activated;
  • Step S1212 if the refrigeration system 70 is running, but is not currently a period of user activity, for example, in a period of 22 o'clock to 6 o'clock, determining whether the compressor frequency is greater than a set frequency threshold, the frequency threshold may be according to a compressor The operating parameters are set, for example, set to 40 Hz. If the operating frequency of the compressor exceeds the frequency threshold, the modified atmosphere freshening system 80 is not allowed to start at the same time, and the air conditioning system 80 is kept closed, and the judgment is ended;
  • Step S1214 determining whether the modified atmosphere preservation system 80 is running when the refrigeration system 70 is not activated or the compressor is operating at a condition lower than the frequency threshold during a period other than the user's activity;
  • Step S1216 if the modified atmosphere storage system 80 is running, determining whether the oxygen concentration of the modified atmosphere subspace 271 is lower than a preset lower limit of the oxygen concentration until the oxygen concentration of the modified atmosphere subspace 271 is decreased to a lower limit of the preset oxygen concentration;
  • Step S1218 closing the modified atmosphere preservation system 80
  • Step S1220 if the modified atmosphere preservation system 80 is not operated, it is determined whether the oxygen concentration of the modified atmosphere sub-space 271 is higher than a preset oxygen concentration upper limit;
  • step S1222 the atmosphere fresh-keeping system 80 is activated in the case where the oxygen concentration of the modified atmosphere sub-space 271 is higher than the upper limit of the preset oxygen concentration.
  • the breakpoint identification is performed, and the emergency interrupt process is executed preferentially, and the step of returning the breakpoint identification after completion is continued to be executed cyclically.
  • the above upper limit of the oxygen concentration and the lower limit of the oxygen concentration may be set according to the type of food placed in the modified atmosphere sub-space 271.
  • the oxygen concentration range corresponding to the plurality of types of foods may be determined in advance by testing, and the type information of the food is determined by user input or automatic identification to determine a corresponding oxygen concentration range.
  • the starting condition may be that the oxygen concentration of the modified air conditioning subspace 271 is higher than or equal to a preset upper limit of the oxygen concentration
  • the shutdown condition is that the oxygen concentration of the modified air conditioning subspace 271 is lower than or equal to a preset lower limit of the oxygen concentration
  • Fig. 13 is a schematic diagram showing the start-up determination of the modified atmosphere fresh-keeping system 80 according to time in the controlled atmosphere fresh-keeping control method of the refrigerating and freezing apparatus according to an embodiment of the present invention.
  • the refrigerating and freezing apparatus of this embodiment can perform the following steps when performing the air conditioning control:
  • Step S1302 initializing, obtaining the current time
  • Step S1304 determining whether it is currently in the frequent opening time period, and if so, keeping the air conditioning fresh-keeping system 80 closed, and ending the judgment;
  • Step S1306 whether the door body of the refrigerating and freezing device is opened, and if so, keeping the air conditioning system 80 closed, End judgment
  • Step S1310 if the refrigeration system 70 is running, it is determined whether the current time is a period of user activity, for example, whether it is currently between 6 o'clock and 22 o'clock, during which time the compressor is not allowed to be in any working condition.
  • the fresh-keeping system 80 is activated at the same time;
  • Step S1313 if the refrigeration system 70 is running, but is not currently a period of user activity, for example, in a period of 22 o'clock to 6 o'clock, determining whether the compressor frequency is greater than a set frequency threshold, the frequency threshold may be according to a compressor The operating parameters are set, for example, set to 40 Hz. If the operating frequency of the compressor exceeds the frequency threshold, the modified atmosphere freshening system 80 is not allowed to start at the same time, and the air conditioning system 80 is kept closed, and the judgment is ended;
  • Step S1314 determining whether the modified atmosphere preservation system 80 is running when the refrigeration system 70 is not activated or the compressor is operating at a time lower than the frequency threshold for a period other than the user's activity;
  • Step S1316 if the modified atmosphere preservation system 80 is running, it is determined whether the running time of the modified atmosphere preservation time has exceeded a sixth preset time;
  • Step S1318 closing the modified atmosphere preservation system 80
  • step S1320 if the modified atmosphere preservation system 80 is not in operation, it is determined whether the time from the last modified atmosphere storage system 80 to complete the gas adjustment of the modified atmosphere subspace 271 exceeds a fifth preset time;
  • Step S1322 in the case of determining that the time from the last modified atmosphere storage system 80 to complete the gas adjustment of the modified atmosphere sub-space 271 exceeds the fifth predetermined time, start the modified atmosphere preservation system 80;
  • Step S1324 determining whether the modified air preserving subspace 271 is not turned on for the seventh preset time
  • step S1326 if the modified atmosphere subspace 271 is not turned on for the seventh preset time, the fifth preset time and the sixth preset time are reset, and the seventh preset time may be a relatively long period of time, and may be set to 1 Days or 10 hours, so that the fifth preset time and the sixth preset time are appropriately extended in the case where the modified atmosphere sub-space 271 is not turned on for a long time.
  • the fifth preset time and the sixth preset time may be tested according to the pumping efficiency of the air pump 40 and the gas leakage condition of the modified air conditioning subspace 271, and the air pump 40 completes the air conditioning and fresh air pumping.
  • the time is taken as the sixth preset time, and the time in which the gas in the modified atmosphere sub-space 271 naturally leaks to the oxygen concentration cannot meet the freshness requirement is taken as the fifth preset time.
  • the execution sequence of the flow in the above process can be flexibly adjusted according to requirements, and various conditions and parameters used can be adjusted according to the operating conditions and specifications of the refrigerating and freezing device to ensure that the fresh-keeping operation flag is set to the allowable state.
  • the starting condition is judged.
  • the refrigerating and freezing apparatus of the present embodiment and the controlled atmosphere freshening control method thereof creatively propose to use a gas regulating membrane (for example, an oxygen-rich membrane) module to discharge oxygen in the air in the sealed modified atmosphere sub-space 271 out of the space, thereby
  • a gas regulating membrane for example, an oxygen-rich membrane
  • the space is rich in nitrogen-rich oxygen or other gas atmospheres that are good for food preservation.
  • the nitrogen-rich and oxygen-poor gas atmosphere can reduce the oxygen content in the storage space of fruits and vegetables, reduce the aerobic respiration of fruits and vegetables, and at the same time ensure the basic respiration and prevent anaerobic respiration of fruits and vegetables, thereby achieving the purpose of long-term preservation of fruits and vegetables.
  • the present invention optimizes the startup control logic of the modified atmosphere freshening system 80, and sets the conditions for allowing the modified atmosphere freshening system 80 to start by using the fresh-keeping operation indicator, thereby avoiding the interaction between the modified atmosphere fresh-keeping system 80 and the refrigeration system 70, and avoiding Corresponding to the user's normal use of the refrigerating and freezing device, the user's experience is improved.

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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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

La présente invention concerne un dispositif de réfrigération et de congélation. Le dispositif de réfrigération et de congélation comprend un espace de stockage, un système de conservation au frais par régulation d'air (80), et un système de réfrigération (70). Un sous-espace de conservation au frais étanche à l'air est formé dans l'espace de stockage. Le système de conservation au frais par régulation d'air (80) comprend un ensemble membrane de régulation d'air (30) et une pompe d'extraction d'air (40). La pompe d'extraction d'air (40) est configurée pour amener le gaz dans le sous-espace de conservation au frais par régulation d'air à pénétrer à travers l'ensemble membrane de régulation d'air (30).
PCT/CN2017/115137 2016-12-09 2017-12-08 Dispositif de réfrigération et de congélation et procédé de commande de conversation au frais par régulation d'air associé WO2018103724A1 (fr)

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CN201611132028.6 2016-12-09

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CN114165978A (zh) * 2020-09-11 2022-03-11 青岛海尔电冰箱有限公司 冰箱的控制方法
CN114296497A (zh) * 2021-04-10 2022-04-08 陈段明 冷冻保鲜用能耗自调节控温装置
CN114982816A (zh) * 2022-05-26 2022-09-02 上海东普信息科技有限公司 果蔬冷链的保鲜控制方法、装置、设备及存储介质
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CN107270624A (zh) * 2017-06-30 2017-10-20 青岛海尔股份有限公司 冷藏冷冻装置
CN111076491B (zh) * 2018-10-22 2020-10-30 海尔智家股份有限公司 冰箱及其控制方法
CN109737671B (zh) * 2018-12-28 2021-08-24 海尔智家股份有限公司 冷藏冷冻装置及其控制方法
CN110905194B (zh) * 2019-12-19 2021-08-27 郑州工业应用技术学院 土木工程用支撑装置
CN111609663A (zh) * 2020-05-06 2020-09-01 珠海格力电器股份有限公司 一种保鲜控制装置、冰箱及其保鲜控制方法
CN111664627B (zh) * 2020-05-27 2022-05-13 海信容声(广东)冰箱有限公司 气调保鲜装置的控制方法及冰箱
CN114383360A (zh) * 2020-10-21 2022-04-22 海信（山东）冰箱有限公司 冰箱

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CN115183525A (zh) * 2021-04-02 2022-10-14 青岛海尔电冰箱有限公司 储物装置及冰箱
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CN115669719A (zh) * 2022-10-27 2023-02-03 浙江万里学院 一种移动式气调冷藏装置及其控制方法

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