WO2020220448A1 - Super ice temperature fresh-keeping apparatus and control method therefor - Google Patents

Super ice temperature fresh-keeping apparatus and control method therefor Download PDF

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Publication number
WO2020220448A1
WO2020220448A1 PCT/CN2019/092662 CN2019092662W WO2020220448A1 WO 2020220448 A1 WO2020220448 A1 WO 2020220448A1 CN 2019092662 W CN2019092662 W CN 2019092662W WO 2020220448 A1 WO2020220448 A1 WO 2020220448A1
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Prior art keywords
cavity
temperature
ice
air circulation
ice slurry
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PCT/CN2019/092662
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French (fr)
Chinese (zh)
Inventor
董凯军
张博博
孙钦
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中国科学院广州能源研究所
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Publication of WO2020220448A1 publication Critical patent/WO2020220448A1/en

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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature

Definitions

  • the invention relates to food storage and fresh-keeping technology, in particular to an ultra-ice temperature fresh-keeping device and a control method thereof.
  • the ultra-ice temperature technology is based on the ice temperature technology, which stores the food below the freezing point and above the destruction point. Compared with the traditional -18°C freezing preservation, the original structure and flavor of the food is guaranteed. Compared with the ice temperature technology, it can effectively extend the storage period of the food. It is the future development direction of high-quality food preservation technology.
  • the current ultra-ice temperature technology mostly uses air-cooled cyclic temperature control.
  • This type of temperature-controlled refrigeration equipment requires regular defrosting treatment, which leads to large fluctuations in indoor temperature, and food under ultra-ice temperature is greatly affected by temperature. , The stability is poor. Under large temperature fluctuations, it is easy to reach the food destruction point and freeze, resulting in unnecessary cell tissue fluid outflow, affecting the delicious food.
  • most of the existing refrigeration equipment such as household refrigerators, refrigerated trucks, and cold storages, remain in the stage of traditional freezers, and their own temperature control adjustment methods cannot meet the temperature range control requirements of the ultra-ice temperature technology.
  • the present invention provides an ultra-ice temperature preservation device and a control method thereof to realize the application of ultra-ice temperature technology in traditional freezing equipment, and realize precise temperature control of food through the constant temperature technology of ice slurry extraction .
  • An ultra-ice temperature preservation device comprising a main body and a cover plate.
  • the main body includes an air circulation cavity, an ice slurry cavity and a food storage cavity. One side of the food storage cavity is opened.
  • the ice slurry cavity covers the outside of the food storage cavity and the air circulates.
  • the cavity covers the outside of the ice slurry cavity, and the cover plate is sealed and connected to the main body by opening and closing the food storage cavity.
  • the ice slurry cavity is filled with freezing point regulator, and the air circulation cavity is cooled by cold air supplied by the supporting refrigeration equipment. .
  • the ice slurry cavity is a multi-sandwich cavity structure arranged in order from the inside to the outside, and the sandwich cavities are not connected, and different sandwich cavities are filled with different concentrations of freezing point regulator, and the concentration is from the inside Decrease in order to the outside.
  • the multi-sandwich cavity structure can realize the preparation of multi-concentration freezing point regulator aqueous solution, and realize the storage temperature selection of multiple super-ice temperature in the sandwich cavity
  • the cover plate is also a multi-sandwich cavity structure arranged in order from the inside to the outside, and the interlayer cavities are not connected, and the number of the interlayer cavities and the freezing point regulator filled in each interlayer cavity are The ice slurry cavity corresponds to the same.
  • foam metal materials or fins are arranged in each of the interlayer cavities. Filling with foamed metal material or setting fins can enhance heat exchange.
  • the air circulation cavity is provided with at least two vent holes, each vent hole is provided with a fan, and the air circulation cavity is provided with an enhanced heat exchange structure.
  • the enhanced heat exchange structure can strengthen the connection between the air circulation cavity and the ice slurry cavity, and can also enhance the heat exchange, so that the cold air entering the air cavity can better heat exchange with the ice slurry cavity, and realize the rapid and uniform cooling of the ice slurry cavity.
  • the air circulation cavity is provided with a vertical partition and a plurality of horizontal partitions. On both sides of the vertical partition, an inlet flute tube and an outlet flute tube are respectively provided, and a plurality of horizontal partitions are provided.
  • the horizontal air circulation chambers formed by the plates are not connected.
  • the outer surfaces of the main body and the cover plate are both wrapped with thermal insulation materials.
  • the whole device is wrapped with thermal insulation material and is thermally isolated from the outside, so that the device can be flexibly placed.
  • the user sets the super-ice temperature storage temperature T super-ice temperature ;
  • the super-ice temperature storage temperature set by the user can be selected and set among multiple freezing point temperatures corresponding to multiple sandwich cavities according to the type of food stored.
  • the ⁇ t is the temperature hysteresis, and its range is 0.1-0.3°C.
  • the multi-sandwich cavity structure can realize the preparation of multi-concentration freezing point regulator aqueous solution and realize the selection of multiple super-ice temperature storage temperature in the sandwich cavity.
  • Figure 1 is a schematic diagram of the structure of the ultra-ice temperature preservation device of the first embodiment of the present invention
  • FIG. 2 is a schematic diagram of the structure of the ice slurry cavity in the first embodiment of the present invention
  • FIG. 3 is a schematic diagram of the structure of the cover plate of the first embodiment of the present invention.
  • Figure 4 is a flow chart of the control method of the ultra-ice temperature preservation device of the present invention.
  • FIG. 5 is a schematic diagram of the structure of the ultra-ice temperature preservation device of the second embodiment of the present invention.
  • Figure 6 is a partial schematic view of the flute tube in Figure 5;
  • the ultra-ice temperature preservation device of this embodiment includes a main body and a cover plate 2.
  • the main body includes an air circulation cavity 11, an ice slurry cavity 12 and a food storage cavity 13.
  • the food storage cavity 13 is a rectangular cavity with an opening on one side, and is used for storing foods that need to be stored at an ultra-ice temperature.
  • Both the ice slurry cavity 12 and the air circulation cavity 11 are closed rectangular cavities.
  • the ice slurry cavity 12 is provided with recesses for the food storage cavity 13 to be embedded, and the air circulation cavity 11 is provided with recesses for the ice slurry cavity 12 to be embedded, and the three are fixed. Later, the opening side is flush to form a rectangular body.
  • the cover plate 2 is hermetically connected to the side of the main body with an opening in a hinged or snapped manner, and is used to open or close the food storage cavity 13.
  • the specific structure can refer to the design of the refrigerator door.
  • Both the cover plate 2 and the outer surface of the air circulation cavity 11 are wrapped with heat preservation material, and the No. 1 vent hole 151 and the No. 2 vent hole 152 are respectively opened on two opposite sides of the air circulation cavity 11.
  • the No. 1 fan 141 is installed in the No. 1 vent hole 151
  • the No. 2 fan 142 is installed in the No. 2 vent hole 152.
  • the punch positions of the No. 1 vent hole 151 and the No. 2 vent hole 152 in the air circulation chamber 11 are shown in the figure.
  • the No. 1 fan 141 and the No. 2 fan 142 work alternately when placed at the corners of both sides near the top surface.
  • the ultra-ice temperature preservation device is equipped with refrigeration equipment. The installation gap between the two is greater than 5cm.
  • the refrigeration equipment provides cold air for refrigeration. It can be connected to the air circulation cavity 11 through a pipe or air chamber to form a refrigeration circuit. In this way, the air circulation cavity 11 is outside Under the suction of the working fan, the cold air enters the air circulation chamber 11 and is finally discharged from the vent of the non-working fan to complete the entire heat exchange process.
  • the air circulation cavity 11 is equipped with fins and other enhanced heat exchange structures, which can not only strengthen the connection between the air circulation cavity 11 and the ice slurry cavity 12, but also enhance the heat exchange, so that the cold air entering the air circulation cavity 11 better matches the ice
  • the heat exchange inside the slurry cavity 12 realizes the rapid and uniform temperature drop inside the ice slurry cavity 12.
  • No. 1 vent hole 151 and No. 2 vent hole 152 are provided with sliding doors wrapped with thermal insulation materials.
  • the sliding doors can be automatically opened or closed by the controller.
  • the No. 1 fan 141 and the No. 2 fan 142 are not working.
  • the sliding door is closed so that there is no heat exchange between the device and the outside world.
  • the ice slurry cavity 12 contains an aqueous solution of a freezing point regulator and a foamed metal material.
  • the foamed metal material increases the thermal conductivity of the solution in the ice slurry cavity 12 so as to achieve uniform cooling in the ice slurry cavity 12.
  • Foamed metal materials can also be replaced by heat sink fins.
  • the ice slurry cavity 12 in this embodiment adopts the interlayer form as shown in the figure: the first interlayer cavity 121, the second interlayer cavity 122, and the third interlayer cavity 123 are sequentially arranged from the outside to the inside.
  • the cover plate 2 in this embodiment adopts the sandwich form shown in the figure: No. 4 cover plate sandwich cavity 21, No. 5 cover plate sandwich cavity 22, and No. 6 cover plate sandwich cavity 23 are arranged in sequence from the outside to the inside.
  • the purpose of designing multiple interlayer cavities is to prepare different concentrations of freezing point regulator aqueous solutions in different interlayer cavities, so as to achieve multiple freezing point temperatures. According to the type of food stored, it can be selected as the ultra-ice temperature storage temperature. A variety of different foods can be kept fresh at super ice temperature.
  • the interlayer cavities of the ice slurry cavity 12 and the interlayer cavities of the cover plate 2 are equipped with foamed metal materials, and the concentration of the freezing point regulator in each interlayer cavity of the ice slurry cavity 12 decreases from the inside to the outside.
  • the concentration of the freezing point regulator in each sandwich cavity of the cover plate 2 decreases from the inside to the outside, and corresponds to the same as the concentration of the ice slurry cavity 12 from the inside to the outside.
  • T -36.97*(concentration ) 2 -57.28*(concentration)+0.1037.
  • the figure only illustrates the structure of the ice slurry cavity interlayer cavity and the cover interlayer cavity.
  • the present invention does not limit the number of interlayer cavities, and can be customized according to actual needs.
  • the present invention also provides a control method of the ultra-ice temperature preservation device, as shown in FIG. 4, including the following steps:
  • Step S1 the user sets the super-ice temperature storage temperature T super-ice temperature ;
  • the ice slurry cavity 12 contains multiple interlayer cavities, different interlayer cavities are filled with aqueous solutions with freezing point regulator concentration from high to bottom from the inside to the outside.
  • the ultra-ice temperature preservation device can be selected by the user as -1.9°C, -2.8°C, -6°C, that is, users can choose to set the super-ice storage temperature according to food needs.
  • Step S2 Obtain the ice slurry corresponding to the temperature T of the interlayer cavity
  • the present invention can obtain the ice slurry temperature in each interlayer cavity by arranging temperature sensors inside each interlayer cavity. According to the value of the super-ice temperature storage temperature set by the user, it corresponds to the concentration of the aqueous solution in the interlayer through the interlayer temperature sensor Obtain the temperature of the solution in the sandwich cavity.
  • Step S3 When the temperature of the interlayer cavity T ice slurry is higher than the user-set temperature T super ice temperature + ⁇ t, go to step S4;
  • Step S4 the fans shown in this embodiment work alternately
  • Step S5 When the interlayer cavity temperature T ice slurry is lower than the user-set temperature T super ice temperature - ⁇ t, go to step S6;
  • Step S6 The fan shown in this embodiment stops working.
  • the present invention adopts a hysteresis control method for the super-ice temperature storage temperature control, where the hysteresis value ⁇ t can refer to 0.1-0.3°C.
  • This has the advantage of effectively controlling the interlayer cavity ice slurry temperature at the super-ice temperature storage temperature set by the user Near (the fluctuation range of ⁇ t).
  • the selected interlayer cavity temperature T ice slurry is higher than the user set temperature T ultra ice temperature + ⁇ t, it means that the temperature of the interlayer cavity has not reached the user set temperature at this time, and the solution in the interlayer cavity is in a liquid state and needs to be opened continuously.
  • the fan sends the cold air outside the ultra-ice temperature device into the air circulation cavity 11 for cooling.
  • the fan used to cool the interlayer cavity can be turned off, and the entire super ice temperature
  • the fresh-keeping device enters the heat preservation state.
  • the fan will restart to work until it detects that the temperature of the interlayer cavity T ice slurry is higher than the user set temperature T super ice temperature + ⁇ t.
  • the ice-water mixing state for a period of time can accurately control the temperature at the super-ice temperature storage temperature set by the user.
  • an ultra-ice temperature preservation device is different from Embodiment 1 in the following: the structure of the air circulation cavity 11 and the air intake mode.
  • the ultra-ice temperature preservation device is cylindrical, and a plurality of horizontal partitions 171 and a vertical partition 172 are provided in the air circulation cavity 11.
  • the two sides of the vertical partition 172 are respectively provided with an air inlet flute tube 161 and an air outlet flute tube 162, and the flute holes on the two tubes for air inlet or outlet face oppositely.
  • the purpose of the vertical partition 172 is to make the inlet flute tube 161 and the outlet flute tube 162 only communicate in one direction. If the outer wall of the flute tube directly contacts the inner wall of the air circulation chamber 11, the vertical partition can also be removed 172.
  • each horizontal air circulation cavity corresponds to at least one flute hole.
  • the cold air outside the device enters the intake flute 161 from the flute inlet 181, and then enters the air circulation cavity 11 through a number of outlet holes (flute holes) distributed on the inlet flute 161. After the heat is exchanged along the inner circumference, it is discharged from the outlet flute tube 162.
  • the fan device for driving the movement of cold air is not shown, and it can be designed according to actual conditions.

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

Abstract

A super ice temperature fresh-keeping apparatus and a control method therefor. A refrigerator comprises a main body and a cover plate; the main body comprises an air circulation cavity, an ice slurry cavity, and a food storage cavity; one side of the food storage cavity is open; the ice slurry cavity covers the outer side of the food storage cavity; the air circulation cavity covers the outer side of the ice slurry cavity; the cover plate is sealingly connected to the main body in a manner of opening and closing the food storage cavity; the ice slurry cavity is filled with a freezing point conditioner; the air circulation cavity refrigerates the ice slurry cavity by means of cold air supplied by a matched refrigeration device. The characteristic that the freezing point conditioner absorbs heat to change a phase without changing the temperature of the freezing point conditioner is used to maintain a constant temperature of the food storage cavity, so that the temperature fluctuation is small, the control precision is high, and the super ice temperature storage of fresh products is easily achieved.

Description

一种超冰温保鲜装置及其控制方法Ultra-ice temperature preservation device and control method thereof 技术领域Technical field
本发明涉及食品贮藏保鲜技术，具体涉及一种超冰温保鲜装置及其控制方法。The invention relates to food storage and fresh-keeping technology, in particular to an ultra-ice temperature fresh-keeping device and a control method thereof.
背景技术Background technique
随着人们生活水平的提高，人们对食品的品质要求也越来越高。超冰温技术基于冰温技术，将食品储存在冻结点以下破坏点以上，较传统-18℃冷冻保存保证了食品原有的组织结构和风味，较冰温技术能有效延长食品的贮藏期，是未来高品质食品保鲜技术的发展方向。With the improvement of people's living standards, people have higher and higher requirements for food quality. The ultra-ice temperature technology is based on the ice temperature technology, which stores the food below the freezing point and above the destruction point. Compared with the traditional -18℃ freezing preservation, the original structure and flavor of the food is guaranteed. Compared with the ice temperature technology, it can effectively extend the storage period of the food. It is the future development direction of high-quality food preservation technology.
目前的超冰温技术多采用风冷的方式循环控温，此种控温方式的制冷设备需要定期化霜处理，导致室内温度波动大，而且处在超冰温状态下的食品受温度影响大，稳定性较差，在大温差波动下，容易到达食品破坏点而结冰，导致不必要的细胞组织液外流，影响食品美味。另一方面，现有冷冻设备，如家用冰箱、冷藏车、冷库等多数停留在传统冷冻柜阶段，其自身温控调节方式还无法满足超冰温技术温度范围控制要求。The current ultra-ice temperature technology mostly uses air-cooled cyclic temperature control. This type of temperature-controlled refrigeration equipment requires regular defrosting treatment, which leads to large fluctuations in indoor temperature, and food under ultra-ice temperature is greatly affected by temperature. , The stability is poor. Under large temperature fluctuations, it is easy to reach the food destruction point and freeze, resulting in unnecessary cell tissue fluid outflow, affecting the delicious food. On the other hand, most of the existing refrigeration equipment, such as household refrigerators, refrigerated trucks, and cold storages, remain in the stage of traditional freezers, and their own temperature control adjustment methods cannot meet the temperature range control requirements of the ultra-ice temperature technology.
发明内容Summary of the invention
为了解决现有技术存在的不足，本发明提供一种超冰温保鲜装置及其控制方法，实现超冰温技术在传统冷冻设备上的应用，通过采冰浆恒温技术，实现对食品精准控温。In order to solve the shortcomings of the prior art, the present invention provides an ultra-ice temperature preservation device and a control method thereof to realize the application of ultra-ice temperature technology in traditional freezing equipment, and realize precise temperature control of food through the constant temperature technology of ice slurry extraction .
为实现上述目的，本发明的技术方案为：In order to achieve the above objective, the technical solution of the present invention is:
一种超冰温保鲜装置，包括主体和盖板，所述的主体包括空气循环腔、冰浆腔和食品贮存腔，食品贮存腔一侧开口，冰浆腔覆盖在食品贮存腔外侧，空气循环腔覆盖在冰浆腔外侧，盖板以开闭食品贮存腔的方式密封连接在主体上，冰浆腔内填充有冰点调节剂，空气循环腔通过配套的冷冻设备供应的冷空气制冷冰浆腔。An ultra-ice temperature preservation device, comprising a main body and a cover plate. The main body includes an air circulation cavity, an ice slurry cavity and a food storage cavity. One side of the food storage cavity is opened. The ice slurry cavity covers the outside of the food storage cavity and the air circulates. The cavity covers the outside of the ice slurry cavity, and the cover plate is sealed and connected to the main body by opening and closing the food storage cavity. The ice slurry cavity is filled with freezing point regulator, and the air circulation cavity is cooled by cold air supplied by the supporting refrigeration equipment. .
作为本发明的一种改进，所述的冰浆腔为从内向外依次布置的多夹层腔结构，各夹层腔之间不连通，不同夹层腔内填充不同浓度的冰点调节剂，且浓度从内到外依次降低。多夹层腔结构可以实现多浓度冰点调节剂水溶液配制，实现夹层腔多个超冰温储存温度选择As an improvement of the present invention, the ice slurry cavity is a multi-sandwich cavity structure arranged in order from the inside to the outside, and the sandwich cavities are not connected, and different sandwich cavities are filled with different concentrations of freezing point regulator, and the concentration is from the inside Decrease in order to the outside. The multi-sandwich cavity structure can realize the preparation of multi-concentration freezing point regulator aqueous solution, and realize the storage temperature selection of multiple super-ice temperature in the sandwich cavity
作为本发明的一种改进，所述的盖板也为从内向外依次布置的多夹层腔结构，各夹层腔之间不连通，且夹层腔个数及各夹层腔内填充的冰点调节剂与冰浆腔对应相同。As an improvement of the present invention, the cover plate is also a multi-sandwich cavity structure arranged in order from the inside to the outside, and the interlayer cavities are not connected, and the number of the interlayer cavities and the freezing point regulator filled in each interlayer cavity are The ice slurry cavity corresponds to the same.
作为本发明的一种改进，所述的各夹层腔内均设置有泡沫金属材料或肋片。内部填充泡沫金属材料或设置肋片，可以起到强化换热的作用。As an improvement of the present invention, foam metal materials or fins are arranged in each of the interlayer cavities. Filling with foamed metal material or setting fins can enhance heat exchange.
作为本发明的一种改进，所述的空气循环腔设有至少2个通气孔，各通气孔中均设置有风扇，空气循环腔内部设有强化换热结构。强化换热结构可以加固空气循环腔和冰浆腔的连接，还可以强化换热，使得进入空气腔的冷空气更好得与冰浆腔内部热交换，实现冰浆腔内部快速均匀降温。As an improvement of the present invention, the air circulation cavity is provided with at least two vent holes, each vent hole is provided with a fan, and the air circulation cavity is provided with an enhanced heat exchange structure. The enhanced heat exchange structure can strengthen the connection between the air circulation cavity and the ice slurry cavity, and can also enhance the heat exchange, so that the cold air entering the air cavity can better heat exchange with the ice slurry cavity, and realize the rapid and uniform cooling of the ice slurry cavity.
作为本发明的一种改进，所述空气循环腔内部设有一竖直隔板和若干水平隔板，在竖直隔板两侧分别设有进气笛形管和出气笛形管，若干水平隔板形成的各水平空气循环腔之间不连通。As an improvement of the present invention, the air circulation cavity is provided with a vertical partition and a plurality of horizontal partitions. On both sides of the vertical partition, an inlet flute tube and an outlet flute tube are respectively provided, and a plurality of horizontal partitions are provided. The horizontal air circulation chambers formed by the plates are not connected.
作为本发明的一种改进，所述的主体和盖板的外表面均包裹保温材料。装置整体包裹保温材料，与外界热隔离，使装置可以灵活摆放。As an improvement of the present invention, the outer surfaces of the main body and the cover plate are both wrapped with thermal insulation materials. The whole device is wrapped with thermal insulation material and is thermally isolated from the outside, so that the device can be flexibly placed.
一种超冰温保鲜装置的控制方法，其特征在于：包括以下步骤：A control method of an ultra-ice temperature preservation device is characterized in that it comprises the following steps:
用户设置超冰温储存温度T 超冰温； The user sets the super-ice temperature storage temperature T super-ice temperature ;
获取对应夹层腔温度T 冰浆； Obtain the ice slurry corresponding to the temperature T of the interlayer cavity;
当该夹层腔温度T 冰浆高于用户设置温度T 超冰温+Δt时，空气循环腔工作 When the interlayer cavity temperature T ice slurry is higher than the user set temperature T super ice temperature +Δt, the air circulation cavity works
当该夹层腔温度T 冰浆低于用户设置温度T 超冰温－Δt时，空气循环腔不工作。 When the interlayer cavity temperature T ice slurry is lower than the user set temperature T super ice temperature- Δt, the air circulation cavity does not work.
作为本发明的一种改进，所述用户设置的超冰温储存温度，可根据储存食品的类型，在多个夹层腔对应的多个冰点温度中自行选择设置。As an improvement of the present invention, the super-ice temperature storage temperature set by the user can be selected and set among multiple freezing point temperatures corresponding to multiple sandwich cavities according to the type of food stored.
作为本发明的一种改进，所述的Δt为温度回差，其范围为0.1～0.3℃。As an improvement of the present invention, the Δt is the temperature hysteresis, and its range is 0.1-0.3°C.
与现有技术相比，本发明的有益效果是：Compared with the prior art, the beneficial effects of the present invention are:
1、利用冰点调节剂吸热相变而不改变本身温度的特点，来维持食品贮存腔的温度恒定，温度波动小，控制精度高，易于实现对生鲜产品的超冰温贮藏。1. Utilize the characteristics of the freezing point regulator to absorb heat and change its temperature without changing its own temperature to maintain a constant temperature in the food storage cavity, with small temperature fluctuations, high control accuracy, and easy to achieve ultra-ice temperature storage of fresh products.
2、多夹层腔结构可以实现多浓度冰点调节剂水溶液配制，实现夹层腔多个超冰温储存温度选择。2. The multi-sandwich cavity structure can realize the preparation of multi-concentration freezing point regulator aqueous solution and realize the selection of multiple super-ice temperature storage temperature in the sandwich cavity.
附图说明Description of the drawings
图1是本发明实施例一的超冰温保鲜装置的结构示意图；Figure 1 is a schematic diagram of the structure of the ultra-ice temperature preservation device of the first embodiment of the present invention;
图2是本发明实施例一的冰浆腔的结构示意图；2 is a schematic diagram of the structure of the ice slurry cavity in the first embodiment of the present invention;
图3是本发明实施例一的盖板的结构示意图；3 is a schematic diagram of the structure of the cover plate of the first embodiment of the present invention;
图4是本发明的超冰温保鲜装置的控制方法流程图；Figure 4 is a flow chart of the control method of the ultra-ice temperature preservation device of the present invention;
图5是本发明实施例二的超冰温保鲜装置的结构示意图；5 is a schematic diagram of the structure of the ultra-ice temperature preservation device of the second embodiment of the present invention;
图6是图5中笛形管的局部示意图；Figure 6 is a partial schematic view of the flute tube in Figure 5;
附图标记说明：11-空气循环腔；12-冰浆腔；121-一号夹层腔；122-二号夹层腔；123-三号夹层腔；13-食品贮存腔；141-一号风扇；151-一号通风孔；142-二号风扇；152-二号通风孔；161-进气笛形管；162-出气笛形管；171-水平隔板；172-竖直隔板；181-笛形管进气孔；182-笛形管出气孔；2-盖板；21-四号盖板夹层腔；22-五号盖板夹层腔；23-六号盖板夹层腔。Description of Reference Signs: 11-air circulation cavity; 12-ice slurry cavity; 121-No. 1 interlayer cavity; 122-No. 2 interlayer cavity; 123-No. 3 interlayer cavity; 13-Food storage cavity; 141-No. 1 fan; 151-No. 1 vent; 142-No. 2 fan; 152-No. 2 vent; 161-inlet flute pipe; 162-outlet flute pipe; 171-horizontal partition; 172-vertical partition; 181 -Flute-shaped tube air inlet; 182-Flute-shaped tube air outlet; 2-cover plate; 21-fourth cover plate interlayer cavity; 22-fifth cover plate interlayer cavity; 23-sixth cover plate interlayer cavity.
具体实施方式Detailed ways
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本发明作进一步详细的说明。In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
实施例1Example 1
如图1所示，本实施例的一种超冰温保鲜装置，包括主体和盖板2，主体包括空气循环腔11、冰浆腔12和食品贮存腔13。食品贮存腔13为一侧开口的矩形腔室，用于放置需要进行超冰温贮藏的食品。冰浆腔12和空气循环腔11均为密闭的矩形腔体，冰浆腔12设有供食品贮存腔13嵌入的凹陷，空气循环腔11设有供冰浆腔12嵌入的凹陷，三者固定后，开口侧平齐，构成矩形体。盖板2通过铰接或卡扣的方式密封连接在主体具有开口的侧面，用于打开或关闭食品贮存腔13，具体结构可参考冰箱门的设计。As shown in FIG. 1, the ultra-ice temperature preservation device of this embodiment includes a main body and a cover plate 2. The main body includes an air circulation cavity 11, an ice slurry cavity 12 and a food storage cavity 13. The food storage cavity 13 is a rectangular cavity with an opening on one side, and is used for storing foods that need to be stored at an ultra-ice temperature. Both the ice slurry cavity 12 and the air circulation cavity 11 are closed rectangular cavities. The ice slurry cavity 12 is provided with recesses for the food storage cavity 13 to be embedded, and the air circulation cavity 11 is provided with recesses for the ice slurry cavity 12 to be embedded, and the three are fixed. Later, the opening side is flush to form a rectangular body. The cover plate 2 is hermetically connected to the side of the main body with an opening in a hinged or snapped manner, and is used to open or close the food storage cavity 13. The specific structure can refer to the design of the refrigerator door.
盖板2和空气循环腔11外表面均包裹保温材料，在空气循环腔11的两个相对的侧面上分别开设一号通风孔151和二号通风孔152。一号通风孔151内安装一号风扇141，二号通风孔152内安装二号风扇142，其中，一号通风孔151和二号通风孔152在空气循环腔11的打孔位置如图1示意所示，置于两侧面角落靠近顶面位置，一号风扇141和二号风扇142交替工作。超冰温保鲜装置配套有冷冻设备，二者的安装间隙大于5cm，冷冻设备提供制冷用的冷空气，可以通过管道或气室与空气循环腔11相连构成制冷回路，这样，空气循环腔11外部的冷空气在工作风扇的抽吸下，进入空气循环腔11，最终由不工作风扇通风口处排出，完成整个热交换过程。空气循环腔11内部设有翅片等强化换热结构，既可以加固空气循环腔11和冰浆腔12的连接，还可以强化换热，使得进空气循环腔11的冷空气更好地与冰浆腔12内部热交换，实现冰浆腔12内部快速均匀降温。两个风扇交替工作及空气循环腔11内部设置翅片，均为实现冰浆腔12内部均匀降温。一号通风孔151和二号通风孔152外侧设有包裹保温材料的滑动门，滑动门可通过控制器实现自动开启或关闭，一号风扇141和二号风扇142在不工作的情况下，滑动门关闭，使得装置与外界无热交换。Both the cover plate 2 and the outer surface of the air circulation cavity 11 are wrapped with heat preservation material, and the No. 1 vent hole 151 and the No. 2 vent hole 152 are respectively opened on two opposite sides of the air circulation cavity 11. The No. 1 fan 141 is installed in the No. 1 vent hole 151, and the No. 2 fan 142 is installed in the No. 2 vent hole 152. The punch positions of the No. 1 vent hole 151 and the No. 2 vent hole 152 in the air circulation chamber 11 are shown in the figure. As shown in schematic diagram 1, the No. 1 fan 141 and the No. 2 fan 142 work alternately when placed at the corners of both sides near the top surface. The ultra-ice temperature preservation device is equipped with refrigeration equipment. The installation gap between the two is greater than 5cm. The refrigeration equipment provides cold air for refrigeration. It can be connected to the air circulation cavity 11 through a pipe or air chamber to form a refrigeration circuit. In this way, the air circulation cavity 11 is outside Under the suction of the working fan, the cold air enters the air circulation chamber 11 and is finally discharged from the vent of the non-working fan to complete the entire heat exchange process. The air circulation cavity 11 is equipped with fins and other enhanced heat exchange structures, which can not only strengthen the connection between the air circulation cavity 11 and the ice slurry cavity 12, but also enhance the heat exchange, so that the cold air entering the air circulation cavity 11 better matches the ice The heat exchange inside the slurry cavity 12 realizes the rapid and uniform temperature drop inside the ice slurry cavity 12. Two fans work alternately and fins are arranged inside the air circulation cavity 11 to achieve uniform cooling in the ice slurry cavity 12. No. 1 vent hole 151 and No. 2 vent hole 152 are provided with sliding doors wrapped with thermal insulation materials. The sliding doors can be automatically opened or closed by the controller. The No. 1 fan 141 and the No. 2 fan 142 are not working. The sliding door is closed so that there is no heat exchange between the device and the outside world.
冰浆腔12内部装有冰点调节剂的水溶液和泡沫金属材料，泡沫金属材料为增加冰浆腔12内溶液的导热系数，从而实现冰浆腔12内部均匀降温。泡沫金属材料也可以用散热肋片 代替。The ice slurry cavity 12 contains an aqueous solution of a freezing point regulator and a foamed metal material. The foamed metal material increases the thermal conductivity of the solution in the ice slurry cavity 12 so as to achieve uniform cooling in the ice slurry cavity 12. Foamed metal materials can also be replaced by heat sink fins.
如图2所示，本实施例中的冰浆腔12采用图示的夹层形式：一号夹层腔121、二号夹层腔122和三号夹层腔123从外向内依次布置。如图3所示，本实施例中的盖板2采用图示的夹层形式：四号盖板夹层腔21、五号盖板夹层腔22和六号盖板夹层腔23从外向内依次布置。设计多个夹层腔的目的是为在不同的夹层腔内部调配不同浓度的冰点调节剂水溶液，从而实现多个冰点温度，可根据储存食品的类型，从中自行选择作为超冰温储存温度，进而对多种不同食品实现超冰温保鲜。As shown in FIG. 2, the ice slurry cavity 12 in this embodiment adopts the interlayer form as shown in the figure: the first interlayer cavity 121, the second interlayer cavity 122, and the third interlayer cavity 123 are sequentially arranged from the outside to the inside. As shown in Fig. 3, the cover plate 2 in this embodiment adopts the sandwich form shown in the figure: No. 4 cover plate sandwich cavity 21, No. 5 cover plate sandwich cavity 22, and No. 6 cover plate sandwich cavity 23 are arranged in sequence from the outside to the inside. The purpose of designing multiple interlayer cavities is to prepare different concentrations of freezing point regulator aqueous solutions in different interlayer cavities, so as to achieve multiple freezing point temperatures. According to the type of food stored, it can be selected as the ultra-ice temperature storage temperature. A variety of different foods can be kept fresh at super ice temperature.
冰浆腔12的各夹层腔和盖板2的个夹层腔内部均装有泡沫金属材料，冰浆腔12的各夹层腔内冰点调节剂的浓度从内到外依次降低。盖板2的各夹层腔内冰点调节剂的浓度从内到外依次降低，且与冰浆腔12从内到外的浓度对应相同。冰浆腔12各夹层腔内的冰点调节剂浓度设置和结晶温度存在对应关系，以盐溶液为例，0～30％范围内，氯化钠溶液结晶温度计算公式：T＝－36.97*(浓度) 2－57.28*(浓度)+0.1037。图中只是示意了冰浆腔夹层腔和盖板夹层腔的结构形式，本发明不限制夹层腔个数，可根据实际需要定制。 The interlayer cavities of the ice slurry cavity 12 and the interlayer cavities of the cover plate 2 are equipped with foamed metal materials, and the concentration of the freezing point regulator in each interlayer cavity of the ice slurry cavity 12 decreases from the inside to the outside. The concentration of the freezing point regulator in each sandwich cavity of the cover plate 2 decreases from the inside to the outside, and corresponds to the same as the concentration of the ice slurry cavity 12 from the inside to the outside. There is a corresponding relationship between the freezing point regulator concentration setting in each interlayer cavity of the ice slurry cavity 12 and the crystallization temperature. Taking the salt solution as an example, the calculation formula for the crystallization temperature of the sodium chloride solution within the range of 0-30%: T = -36.97*(concentration ) 2 －57.28*(concentration)+0.1037. The figure only illustrates the structure of the ice slurry cavity interlayer cavity and the cover interlayer cavity. The present invention does not limit the number of interlayer cavities, and can be customized according to actual needs.
本发明还提供了一种超冰温保鲜装置的控制方法，参照图4所示，包括以下步骤：The present invention also provides a control method of the ultra-ice temperature preservation device, as shown in FIG. 4, including the following steps:
步骤S1：用户设置超冰温储存温度T 超冰温； Step S1: the user sets the super-ice temperature storage temperature T super-ice temperature ;
由于冰浆腔12包含多个夹层腔，在不同的夹层腔内，从内到外依次装有冰点调节剂浓度从高到底的水溶液，对于一个固定夹层腔数和冰点调节剂浓度的超冰温保鲜装置，用户可选择的超冰温储存温度也是固定的，以盐溶液为例，0～30％浓度范围内，氯化钠溶液结晶温度计算公式：T＝－36.97*(浓度) 2－57.28*(浓度)+0.1037。一共有三个夹层腔，且盐溶液浓度从外到内依次为3.5％，5％，10％的超冰温保鲜装置，用户可以选择的超冰温储存温度为-1.9℃，-2.8℃，-6℃，即用户可以根据食品需要选择设置超冰温储存温度。 Since the ice slurry cavity 12 contains multiple interlayer cavities, different interlayer cavities are filled with aqueous solutions with freezing point regulator concentration from high to bottom from the inside to the outside. For a fixed number of interlayer cavities and freezing point regulator concentration, the super ice temperature For the fresh-keeping device, the user-selectable ultra-ice temperature storage temperature is also fixed. Taking salt solution as an example, within the concentration range of 0-30%, the formula for calculating the crystallization temperature of sodium chloride solution: T = -36.97*(concentration) 2 -57.28 *(Concentration) +0.1037. There are a total of three sandwich cavities, and the salt solution concentration is 3.5%, 5%, and 10% from the outside to the inside. The ultra-ice temperature preservation device can be selected by the user as -1.9℃, -2.8℃, -6℃, that is, users can choose to set the super-ice storage temperature according to food needs.
步骤S2：获取对应夹层腔温度T 冰浆； Step S2: Obtain the ice slurry corresponding to the temperature T of the interlayer cavity;
本发明可通过在各夹层腔内部布置温度传感器，来获取各夹层腔内的冰浆温度，根据用户设置的超冰温储存温度数值大小，对应一个夹层里的水溶液浓度，通过该夹层的温度传感器获取该夹层腔内的溶液温度。The present invention can obtain the ice slurry temperature in each interlayer cavity by arranging temperature sensors inside each interlayer cavity. According to the value of the super-ice temperature storage temperature set by the user, it corresponds to the concentration of the aqueous solution in the interlayer through the interlayer temperature sensor Obtain the temperature of the solution in the sandwich cavity.
步骤S3：当该夹层腔温度T 冰浆高于用户设置温度T 超冰温+Δt时，进入步骤S4； Step S3: When the temperature of the interlayer cavity T ice slurry is higher than the user-set temperature T super ice temperature +Δt, go to step S4;
步骤S4：本实施例中所示的风扇交替工作；Step S4: the fans shown in this embodiment work alternately;
步骤S5：当该夹层腔温度T 冰浆低于用户设置温度T 超冰温－Δt时，进入步骤S6； Step S5: When the interlayer cavity temperature T ice slurry is lower than the user-set temperature T super ice temperature -Δt, go to step S6;
步骤S6：本实施例中所示的风扇停止工作。Step S6: The fan shown in this embodiment stops working.
本发明对于超冰温储存温度控制采用回差控制方式，其中回差值Δt可参考0.1～0.3℃， 这样做的好处，可以有效将夹层腔冰浆温度控制在用户设置的超冰温储存温度附近(Δt的波动范围)。当选定的夹层腔温度T 冰浆高于用户设置温度T 超冰温+Δt时，说明此时该夹层腔温度并未达到用户设定温度，夹层腔内溶液处于液相状态，需要继续打开风扇，将超冰温装置外侧的冷空气送入空气循环腔11进行冷却降温。当选定的夹层腔温度T 冰浆低于用户设置温度T 超冰温－Δt时，说明该夹层腔内溶液已经完全结冰，此时用于冷却夹层腔的风扇可以关闭，整个超冰温保鲜装置进入保温状态，直到检测到该夹层腔温度T 冰浆重新高于用户设置温度T 超冰温+Δt时，风扇才重新开始工作，在这个升温过程中，夹层腔内溶液会经历较长一段时间的冰水混合状态，可以精确将温度控制在用户设置的超冰温储存温度。 The present invention adopts a hysteresis control method for the super-ice temperature storage temperature control, where the hysteresis value Δt can refer to 0.1-0.3°C. This has the advantage of effectively controlling the interlayer cavity ice slurry temperature at the super-ice temperature storage temperature set by the user Near (the fluctuation range of Δt). When the selected interlayer cavity temperature T ice slurry is higher than the user set temperature T ultra ice temperature + Δt, it means that the temperature of the interlayer cavity has not reached the user set temperature at this time, and the solution in the interlayer cavity is in a liquid state and needs to be opened continuously. The fan sends the cold air outside the ultra-ice temperature device into the air circulation cavity 11 for cooling. When the selected interlayer cavity temperature T ice slurry is lower than the user set temperature T super ice temperature- Δt, it means that the solution in the interlayer cavity has been completely frozen. At this time, the fan used to cool the interlayer cavity can be turned off, and the entire super ice temperature The fresh-keeping device enters the heat preservation state. The fan will restart to work until it detects that the temperature of the interlayer cavity T ice slurry is higher than the user set temperature T super ice temperature + Δt. During this heating process, the solution in the interlayer cavity will experience a longer period of time. The ice-water mixing state for a period of time can accurately control the temperature at the super-ice temperature storage temperature set by the user.
实施例2Example 2
如图5和图6所示，一种超冰温保鲜装置，与实施例1不同点在于：空气循环腔11的结构及进气方式。本实施例中，超冰温保鲜装置呈圆柱形，空气循环腔11内部开设若干水平隔板171和一个竖直隔板172。竖直隔板172的两侧分别设有进气笛形管161和出气笛形管162，且二者管身上用于进气或出气的笛孔朝向相反。设置竖直隔板172的目的是让进气笛形管161和出气笛形管162只能单向连通，如果笛形管的外壁直接与空气循环腔11内壁接触，也可去掉竖直隔板172。若干水平隔板171形成的若干水平空气循环腔之间也不连通，每个水平空气循环腔对应至少一个笛孔。装置外部的冷空气自笛形管进气孔181进入进气笛形管161，再由进气笛形管161上分布的若干出气孔(笛孔)进入空气循环腔11，在空气循环腔11内沿圆周换热后，再由出气笛形管162排出。本实施例中，用于驱动冷空气运动的风扇装置未给出示意，可根据实际情况设计。As shown in Figures 5 and 6, an ultra-ice temperature preservation device is different from Embodiment 1 in the following: the structure of the air circulation cavity 11 and the air intake mode. In this embodiment, the ultra-ice temperature preservation device is cylindrical, and a plurality of horizontal partitions 171 and a vertical partition 172 are provided in the air circulation cavity 11. The two sides of the vertical partition 172 are respectively provided with an air inlet flute tube 161 and an air outlet flute tube 162, and the flute holes on the two tubes for air inlet or outlet face oppositely. The purpose of the vertical partition 172 is to make the inlet flute tube 161 and the outlet flute tube 162 only communicate in one direction. If the outer wall of the flute tube directly contacts the inner wall of the air circulation chamber 11, the vertical partition can also be removed 172. Several horizontal air circulation cavities formed by several horizontal partitions 171 are also not connected, and each horizontal air circulation cavity corresponds to at least one flute hole. The cold air outside the device enters the intake flute 161 from the flute inlet 181, and then enters the air circulation cavity 11 through a number of outlet holes (flute holes) distributed on the inlet flute 161. After the heat is exchanged along the inner circumference, it is discharged from the outlet flute tube 162. In this embodiment, the fan device for driving the movement of cold air is not shown, and it can be designed according to actual conditions.
上述实施例只是为了说明本发明的技术构思及特点，其目的是在于让本领域内的普通技术人员能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡是根据本发明内容的实质所做出的等效的变化或修饰，都应涵盖在本发明的保护范围内。The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those of ordinary skill in the art to understand the content of the present invention and implement them accordingly, and should not limit the protection scope of the present invention. All equivalent changes or modifications made according to the essence of the present invention should be covered by the protection scope of the present invention.

Claims (10)

  1. 一种超冰温保鲜装置，包括主体和盖板，其特征在于：所述的主体包括空气循环腔、冰浆腔和食品贮存腔，食品贮存腔一侧开口，冰浆腔覆盖在食品贮存腔外侧，空气循环腔覆盖在冰浆腔外侧，盖板以开闭食品贮存腔的方式密封连接在主体上，冰浆腔内填充有冰点调节剂，空气循环腔通过配套的冷冻设备供应的冷空气制冷冰浆腔。An ultra-ice temperature preservation device, comprising a main body and a cover plate, wherein the main body includes an air circulation cavity, an ice slurry cavity and a food storage cavity. One side of the food storage cavity is open, and the ice slurry cavity covers the food storage cavity. On the outside, the air circulation cavity covers the outside of the ice slurry cavity, the cover plate is sealed and connected to the main body by opening and closing the food storage cavity, the ice slurry cavity is filled with freezing point regulator, and the air circulation cavity is supplied with cold air through the supporting refrigeration equipment Refrigeration ice slurry cavity.
  2. 根据权利要求1所述的一种超冰温保鲜装置，其特征在于：所述的冰浆腔为从内向外依次布置的多夹层腔结构，各夹层腔之间不连通，不同夹层腔内填充不同浓度的冰点调节剂，且浓度从内到外依次降低。The ultra-ice temperature preservation device according to claim 1, wherein the ice slurry cavity is a multi-sandwich cavity structure arranged in order from the inside to the outside, and the sandwich cavities are not connected, and the different sandwich cavities are filled Different concentrations of freezing point regulator, and the concentration decreases from the inside to the outside.
  3. 根据权利要求2所述的一种超冰温保鲜装置，其特征在于：所述的盖板也为从内向外依次布置的多夹层腔结构，各夹层腔之间不连通，且夹层腔个数及各夹层腔内填充的冰点调节剂与冰浆腔对应相同。The ultra-ice temperature preservation device according to claim 2, characterized in that: the cover plate is also a structure of multiple sandwich cavities arranged in order from the inside to the outside, and the sandwich cavities are not connected, and the number of the sandwich cavities And the freezing point regulator filled in each sandwich cavity is the same as that of the ice slurry cavity.
  4. 根据权利要求2或3所述的一种超冰温保鲜装置，其特征在于：所述的各夹层腔内均设置有泡沫金属材料或肋片。The ultra-ice temperature preservation device according to claim 2 or 3, characterized in that: each interlayer cavity is provided with foamed metal materials or fins.
  5. 根据权利要求1所述的一种超冰温保鲜装置，其特征在于：所述的空气循环腔设有至少2个通气孔，各通气孔中均设置有风扇，空气循环腔内部设有强化换热结构。The ultra-ice temperature preservation device according to claim 1, wherein the air circulation cavity is provided with at least 2 vent holes, each vent hole is provided with a fan, and the air circulation cavity is provided with an enhanced exchange Thermal structure.
  6. 根据权利要求1所述的一种超冰温保鲜装置，其特征在于：所述空气循环腔内部设有一竖直隔板和若干水平隔板，在竖直隔板两侧分别设有进气笛形管和出气笛形管，若干水平隔板形成的各水平空气循环腔之间不连通。The ultra-ice temperature preservation device according to claim 1, wherein the air circulation cavity is provided with a vertical partition and a plurality of horizontal partitions, and air intake horns are respectively provided on both sides of the vertical partition The horizontal air circulation chambers formed by a plurality of horizontal partitions are not connected with each other.
  7. 根据权利要求1所述的一种超冰温保鲜装置，其特征在于：所述的主体和盖板的外表面均包裹保温材料。The ultra-ice temperature preservation device according to claim 1, wherein the outer surfaces of the main body and the cover plate are both wrapped with heat preservation materials.
  8. 一种超冰温保鲜装置的控制方法，其特征在于：包括以下步骤：A control method of an ultra-ice temperature preservation device is characterized in that it comprises the following steps:
    用户设置超冰温储存温度T 超冰温； The user sets the super-ice temperature storage temperature T super-ice temperature ;
    获取对应夹层腔温度T 冰浆； Obtain the ice slurry corresponding to the temperature T of the interlayer cavity;
    当该夹层腔温度T 冰浆高于用户设置温度T 超冰温+Δt时，空气循环腔工作 When the interlayer cavity temperature T ice slurry is higher than the user set temperature T super ice temperature +Δt, the air circulation cavity works
    当该夹层腔温度T 冰浆低于用户设置温度T 超冰温－Δt时，空气循环腔不工作。 When the interlayer cavity temperature T ice slurry is lower than the user set temperature T super ice temperature- Δt, the air circulation cavity does not work.
  9. 根据权利要求8所述的控制方法，其特征在于，所述用户设置的超冰温储存温度，可根据储存食品的类型，在多个夹层腔对应的多个冰点温度中自行选择设置。8. The control method according to claim 8, wherein the super-ice storage temperature set by the user can be selected and set among multiple freezing point temperatures corresponding to multiple sandwich cavities according to the type of food stored.
  10. 根据权利要求8所述的控制方法，其特征在于，所述的Δt为温度回差，其范围为0.1～0.3℃。The control method according to claim 8, wherein the Δt is a temperature hysteresis, and its range is 0.1-0.3°C.
PCT/CN2019/092662 2019-04-29 2019-06-25 Super ice temperature fresh-keeping apparatus and control method therefor WO2020220448A1 (en)

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