CN104165490B - Heat pipe intelligence refrigerator capable of defrosting - Google Patents

Heat pipe intelligence refrigerator capable of defrosting Download PDF

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Publication number
CN104165490B
CN104165490B CN201410234190.3A CN201410234190A CN104165490B CN 104165490 B CN104165490 B CN 104165490B CN 201410234190 A CN201410234190 A CN 201410234190A CN 104165490 B CN104165490 B CN 104165490B
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China
Prior art keywords
heat pipe
refrigerating chamber
defrosting
cold room
food
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Expired - Fee Related
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CN201410234190.3A
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Chinese (zh)
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CN104165490A (en
Inventor
王淑青
雷桂斌
陈春雷
李灿苹
彭银桥
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Guangdong Ocean University
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Guangdong Ocean University
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Priority to CN201410234190.3A priority Critical patent/CN104165490B/en
Publication of CN104165490A publication Critical patent/CN104165490A/en
Priority to PCT/CN2015/079778 priority patent/WO2015180620A1/en
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Publication of CN104165490B publication Critical patent/CN104165490B/en
Expired - Fee Related legal-status Critical Current
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)

Abstract

The invention discloses a kind of heat pipe intelligence refrigerator capable of defrosting, relate to household appliance technical field. Existing domestic refrigerator, the quick-thawing of food affects mouthfeel and causes nutrition leak, needs manual operations at cold room thawed foodstuff. Heat pipe intelligence refrigerator capable of defrosting utilizes single-chip microcomputer control technology and controlled hot pipe technique to realize reservation defrosting. It includes refrigerating chamber and the cold room of multiple heat insulation independent temperature control, connect with heat pipe between cold room and refrigerating chamber, equipped with electromagnetic valve on heat pipe, Single Chip Microcomputer (SCM) system controls electromagnetic valve work and stopping, during heat pipe work, the heat that its internal heat transfer medium carries cold room flows slowly into refrigerating chamber, and freezing food completes slow defrosting at the subscription time of user, reduce juice loss when frozen food thaws, remain nutrition and the mouthfeel of food. Simultaneously as the heat insulation refrigerating chamber design of multiple independences and the cold of refrigerating chamber flow slowly into cold room, heat pipe intelligence refrigerator capable of defrosting is than current refrigerator saves energy.

Description

Heat pipe intelligence refrigerator capable of defrosting
Technical field
The present invention relates to refrigeration technology field, particularly relate to domestic refrigerator.
Background technology
The frozen food temperature variation curve of existing main flow electric refrigerator is as in figure 2 it is shown, 1 stage, frozen food of lowering the temperature; In 2 stages, food is in freezen protective; In 3 stages, food is taken out in refrigerator, is placed on defrosting plate and naturally thaws; In 4 stages, heating is thawed, and user's not free waiting nature thaws, and just puts in warm water or thaws in microwave oven. On dining table, the meat product of quick-thawing is as the mouthfeel of blockishness, and part is remained on dining table, finally abandons.
Experienced user, proceeds to cold room from refrigerating chamber in advance by freezing food, and its variations in temperature is as it is shown on figure 3,1 stage, and food cooling is freezing; In 2 stages, food is in freezen protective; In 3 stages, food slowly thaws at cold room; In 4 stages, food is taken out in refrigerator, and food is placed under normal temperature environment and cooks, and on dining table, nutrition is good to eat is favourably welcome. But the present people generally not having enough sleep, often forgets about in busy morning and from refrigerating chamber, frozen food is proceeded to cold room. Only having again quick-thawing during culinary art, because mouthfeel is too poor, part is disposed. Thawing inconvenient, user abandons using refrigerating chamber or the full busy culinary art of thawing of refrigerating chamber.
Inside heat pipe is mainly by the liquid and vapor capacity phase-change heat transfer of heat transfer medium, thermal resistance is only small, therefore there is the significantly high capacity of heat transmission, compared with silver, copper, aluminum .., the heat pipe of Unit Weight can transmit the heat of several order of magnitude more, there is the reversibility of excellent isothermal, heat flow density transmutability and direction of heat flow, certainly, high-termal conductivity is also comparatively speaking, the second law of thermodynamics shows what the temperature difference was constantly present, current heat pipe is mainly used in heat radiation and the samming of electronic device, seldom applies at domestic refrigeration technology field.
Document " thawing apparatus and be provided with the refrigerator of thawing apparatus " CN102878756A, discloses a kind of thawing apparatus, uses hot pipe technique to thaw. CN02121055.1 proposes to adopt the used heat of Machine Room to thaw; The thawing apparatus that CN97126440.6 proposes, this thawing apparatus not only needs electric heater and air-supply arrangement, also to have independent space.Therefore it provides the infringement of food mouthfeel and nutrition and the refrigerator of defrosting automatically are become the industry technical issues that need to address by a kind of course of defrosting that can reduce.
Summary of the invention
The technical issues that need to address of the present invention are in that: reducing nutrition and the mouthfeel of course of defrosting infringement food, freezing food thaws automatically at the subscription time of user, saves energy.
For solving above-mentioned technical problem, the technical solution used in the present invention is: refrigerator is divided into multiple refrigerating chamber and cold room, is provided with heat-insulation layer heat insulation, Single Chip Microcomputer (SCM) system independently controls temperature between them. Each refrigerating chamber has a privately owned hermatic door, and all refrigerating chambers have a public hermatic door, when depositing frozen food, first open public hermatic door, opening the hermatic door that specific refrigerating chamber is privately owned again, the privately owned hermatic door of other refrigerating chamber is not switched on, and reduces cold leakage. Refrigerating chamber, cold room and outcase of refrigerator are respectively arranged with temperature sensor, are connected the temperature measuring refrigerating chamber, cold room and outcase of refrigerator with single-chip microcomputer. It is connected with controlled heat pipe between each refrigerating chamber and cold room, equipped with electromagnetic valve on heat pipe, Single-chip Controlling electromagnetic valve is thus controlling the backflow of liquid heat transfer medium in heat pipe, thus controlling the work of heat pipe, reach to control cold room heat and flow slowly into the purpose of refrigerating chamber, namely the cold of refrigerating chamber flows into cold room, it is achieved frozen food slowly thaws at user's subscription time. Heat pipe end is equipped with small fan, and agitation air is easy to heat pipe and refrigerating chamber and cold room heat exchange. Heat pipe in cold room is positioned at the top of cold room, and the heat pipe in refrigerating chamber is positioned at the bottom of refrigerating chamber, and higher temperature gas rises naturally, and lower temperature gas declines naturally, is conducive to abundant heat exchange.
Heat pipe defrosting is the defrosting that the heat of cold room flows into refrigerating chamber by controlled heat pipe. Naturally defrosting is the refrigerant cycle closing refrigerating chamber, the defrosting that temperature slowly rises naturally. Single Chip Microcomputer (SCM) system tests the speed that heat pipe thaws, the speed naturally thawed, and calculates, by the subscription time of user, the start time point that heat pipe thaws and naturally thaws.
The control method of heat pipe intelligence refrigerator capable of defrosting, it comprises the following steps.
1) the outer room temperature change of Single Chip Microcomputer (SCM) system record refrigerator.
2) user is when food to be frozen put into by each refrigerating chamber, and by Single Chip Microcomputer (SCM) system input equipment, user sets taking the time of food in each refrigerating chamber, the time scale that the selected nature of user thaws and heat pipe thaws.
3) speed of the speed of Single Chip Microcomputer (SCM) system test heat pipe defrosting and defrosting naturally, calculates, by the subscription time of user, the start time point that heat pipe thaws and naturally thaws.
4) Single Chip Microcomputer (SCM) system utilizes the refrigerator recorded the previous day outer room temperature change curve prediction room temperature on same day change and the time error thawed last time, revises frozen food and starts the initial time that heat pipe thaws.
5) error of actual thawing time and reservation thawing time is recorded, for the evaluation time that thaws next time.
Accompanying drawing explanation.
Fig. 1 is heat pipe intelligence refrigerator capable of defrosting structural representation.
Fig. 2 is general refrigerator frozen food temperature variation.
Fig. 3 is cold room refrigerator capable of defrosting food temperature variation diagram.
Fig. 4 is heat pipe refrigerator capable of defrosting temperature profile.
Fig. 5 is defrosting temperature-controlling system structural representation.
Fig. 6 is the mensuration figure of thawing rate.
Fig. 7 is critesistor schematic diagram.
Fig. 8 is software flow pattern.
Fig. 9 is the comparison diagram of the microstructure of different thawing mode beef.
Detailed description of the invention.
Embodiment 1: the specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing. As shown in Fig. 1 heat pipe intelligence refrigerator capable of defrosting structural representation, it is divided into six refrigerating chamber 101-106 and a cold room 107, being provided with heat-insulation layer between refrigerating chamber and cold room heat insulation, each refrigerating chamber has a privately owned hermatic door 111-116, and all refrigerating chambers have a public hermatic door 117. Depositing frozen food to refrigerating chamber 101, first open public hermatic door 117, then open privately owned sealing 111, the privately owned hermatic door 112-116 of other refrigerating chamber is not switched on, and reduces cold leakage. Refrigerating chamber, cold room and outcase of refrigerator are respectively arranged with temperature sensor, are connected with single-chip microcomputer, measure the temperature of refrigerating chamber, the temperature of cold room and outcase of refrigerator. It is connected with controlled heat pipe 121-126 between each refrigerating chamber and cold room, equipped with electromagnetic valve 131-136 on heat pipe, Single-chip Controlling electromagnetic valve 131-136, thus controlling the backflow of liquid heat transfer medium in heat pipe, thus controlling the work of heat pipe, reaching to control cold room heat and flow slowly into the purpose of refrigerating chamber, namely the cold of refrigerating chamber flows into cold room, it is achieved frozen food completes slow defrosting at user's subscription time. The heat pipe of cold room is positioned at the top of cold room, and the heat pipe of refrigerating chamber is positioned at the bottom of refrigerating chamber, and higher temperature gas rises naturally, and lower temperature gas declines naturally, is conducive to abundant heat exchange. Heat pipe end is equipped with small fan, and agitation air is easy to heat pipe and refrigerating chamber and cold room heat exchange.
Heat pipe defrosting is the defrosting that the heat of cold room 107 flows into refrigerating chamber 101-106 by controlled heat pipe 121-126, the refrigerant cycle being to close refrigerating chamber 101-106 of naturally thawing, the defrosting that temperature slowly rises naturally. As shown in Figure 6, the speed that the Single Chip Microcomputer (SCM) system each refrigerating chamber 101-106 heat pipe of test thaws, the temperature of defrosting naturally raises, the initial time calculate the defrosting of each refrigerating chamber 101-106 heat pipe by the subscription time of user, naturally thawing.
The control method of heat pipe intelligence refrigerator capable of defrosting, comprises the following steps.
1) the outer room temperature change curve of Single Chip Microcomputer (SCM) system record refrigerator.
2) user is when each refrigerating chamber 101-106 puts into food to be frozen, and by Single Chip Microcomputer (SCM) system input equipment, user sets taking the time of food in each refrigerating chamber, the time scale that the selected nature of user thaws and heat pipe thaws.
3) speed of the speed of Single Chip Microcomputer (SCM) system test for freeze room 101-106 heat pipe defrosting, defrosting naturally, calculates, by the subscription time of user, the start time point that refrigerating chamber 101-106 heat pipe thaws, naturally thaws.
4) Single Chip Microcomputer (SCM) system utilizes the refrigerator recorded the previous day outer room temperature change curve prediction room temperature on same day change and the time error thawed last time, revises frozen food and starts the start time point that heat pipe thaws.
5) error of actual thawing time and reservation thawing time is recorded, for the evaluation time that thaws next time.
Embodiment 2: heat pipe intelligence refrigerator capable of defrosting experimental system and experimental result thereof.
Refrigerator controller hardware includes thermistor (temperature) sensor, amplifying circuit, MUX, single-chip microcomputer, demultplexer, electromagnetic valve, button, liquid crystal display screen, voice module, light emitting diode and buzzer. Heat pipe intelligence refrigerator capable of defrosting controller schematic diagram is as it is shown in figure 5, temperature sensor 1-6 measures the temperature of refrigerating chamber 101-106, and the temperature of cold room 107 is measured in temperature sensor 7, and the temperature of outcase of refrigerator is measured in temperature sensor 8.Electromagnetic valve A1-A6 controls the flowing of the cold-producing medium of refrigerating chamber 101-106, electromagnetic valve A7 controls the flowing of the cold-producing medium of cold room 107, electromagnetic valve B1-B6 controls the electromagnetic valve of controlled heat pipe thus the flowing of the heat transfer medium controlled in controlled heat pipe, reaches to control work and the stopping of controlled heat pipe.
STC12C5410AD single-chip microcomputer is selected in experiment, it is the compatibility 8051 kernel single-chip microcomputer of single clock/machine cycle (1T), it is a new generation 8051 single-chip microcomputer of high speed/low-power consumption, brand-new streamline/Reduced Instruction Set Computer Architecture, it is internally integrated MAX810 Special reset circuit. Experimental system adopts STC12C5410 single-chip microcomputer, running voltage 5.5-3.4v, 10k bytes Flash program storage, 512 byte SRAM, 2 intervalometers, have UART, 4 road PCA/PWM, and high-speed a/d is changed, I/O27/23, has house dog, has built-in reset, has EEPROM.
Experimental system selects thermistor (temperature) sensor. Commercialized degree is high, and cost is low. Resolving power and highly sensitive, precision is higher. Structure is gently little, easy to use, it is simple to realize automatic measurement. Refrigerator temperature detection is temperature controlled basis, adopts critesistor as temperature sensor in scheme, and concrete principle is as shown in Figure 7. Critesistor Rt connects with high-accuracy resistance R0, and D/A detection obtains magnitude of voltage UDt, such that it is able to obtain critesistor resistance Rt=VCC*R0/VDt-R0, relation according to temperature Yu resistance, it may be determined that the Ku Wen of refrigerator, simultaneously compared with set temperature, and then control the switch of compressor, thus realizing the control of internal temperature of refrigerator.
Experimental system selects ADG70 MUX. ADG706 is a low voltage CMOS analog multiplexer, built-in 16 single channels. It is according to 4 binary address line A0, the determined address of A1, A2 and A3,16 tunnels is inputted one of (S1-S16) and switches to public output D. This device provides EN input, is used for enabling or disabling device. During disabling, all passages are turned off. Conducting resistance: 2.5 ��, conducting resistance flatness: 0.5 ��, leakage current: 100pA, switch time: 40ns.
Experimental system selects 74LS138 as data distributor, and one of two Enable Pins selecting Low level effective are data input pin, and other Enable Pin is placed in significant level. When a gating end (E1) is high level, another two gating end ((/E2)) and/(E3)) for low level time, the binary coding of address end (A0, A1, A2) can be translated with low level at the outfan that Y0 to Y7 is corresponding. Such as: during A2A1A0=110, then outfan Y6 output low level signal.
The quantity of domestic refrigerator refrigerating chamber. Second refrigerating chamber is for second time thawed foodstuff, and N refrigerating chamber is used for n-th thawed foodstuff, seven days weekly, within six days, eats frozen food, and thaw every day two refrigerating chambers, needs 12 refrigerating chambers altogether. Some families, noon stays out, and within six days, eats frozen food, and thaw every day a refrigerating chamber, needs 6 refrigerating chambers altogether.
Controller system software design. Software flow as shown in Figure 8, for the first refrigerating chamber therein, illustrates software flow, and the flow process of other refrigerating chamber is identical. User puts into appropriate food, sets the time taking food, different refrigerating chambers, and the difference that user can set that takes the time, and the time taking food deducts now for food storage time in refrigerator, food storage time in refrigerator: T=TD+TS+TR+TW, cooling time TD, natural thawing time TS, heat pipe thawing time TR, thawing time error TW.Due to the impact of the precision of ambient temperature, the change of electric power, the sealing property of refrigerator doors and sensor, thawing time is forbidden, and we give a margin of error, shifts to an earlier date and a bit preengages thawing time, namely provides thaw point error.
The freezing stage 1: refrigeration is opened, heat pipe is closed, and food temperature declines.
The freezen protective stage 2: refrigeration interruption is opened, and refrigerating chamber maintains freezing state, and Single Chip Microcomputer (SCM) system measures V21(after compressor closes, the speed that the temperature of refrigerating chamber rises naturally, unit is DEG C/h) and V22(after compressor closedown, the speed DEG C/h that freezer temperature rises opened by heat pipe), calculates nature thawing time TS, calculate heat pipe thawing time TR, calculate cooling time TD, except test phase, heat pipe is closed At All Other Times.
Naturally thaw stage 3:T > TD, refrigerator enters 3 and naturally thaws, and the heat-barrier material of refrigerator slowly transmits heat to refrigerating chamber.
Heat pipe defrosting stage 4:T > TS+TD, heat pipe is opened, and refrigerating chamber absorbs the heat of cold room by heat pipe, and freezer temperature is rapid increase previous stage relatively, and namely refrigerating chamber and cold room carry out isothermal. T>TR+TS+TDFood is in frozen state, and defrosting completes. In heat pipe intelligence refrigerator capable of defrosting experimental system, the temperature variation curve of frozen food is as shown in Figure 4.
Beef thaws and tests, Sunday 8 is selected user and is put into cattle meat in refrigerating chamber 102, by input through keyboard take-off time, estimate that Tuesday 17 takes out cooking food, refrigerating chamber freezes, Sunday 20 is ordered and is reached minimum cryogenic temperature, 23 complete refrigerating chamber nature thawing time and the test of refrigerating chamber heat pipe thawing time, heat pipe thawing time is 12 hours, natural thawing time is 24 hours, 23 closedown refrigerating chamber 102 refrigerant tubings of Monday connect the valve of compressor, refrigerating chamber 102 enters nature heat absorption thawed state,-7.2 DEG C are risen to 11 temperature on Tuesday, refrigerating chamber 102 enters heat pipe thawed state, Tuesday 17 point, the temperature of refrigerating chamber 102 is 1.8 DEG C.
In sum, the present invention has following beneficial effect.
1. the taste of defrosting food and nutrition retain better than prior art. As it is shown in figure 9, from comparing the course of defrosting impact on beef in appearance, the raw beef of Fig. 9-B, the structure of meat fiber completes, and closely, muscle fiber spacing is minimum in meat fiber arrangement. Fig. 9-C is placed on defrosting plate and thaws places into the beef thawed 25 minutes in warm water after 25 minutes, and in course of defrosting, meat fiber protein oxidation and skelemin degraded destroy muscular tissue. The structural intergrity of freezing beef muscle fiber suffers more serious destruction, and perimysium breaks more, and their muscle fiber spacing is bigger. Fig. 9-A is heat pipe intelligence solution chilled beef, and compared with thawing with defrosting plate, the beef myocytolysis degree that intelligence is thawed is less less with their muscle fiber spacing, and perimysium is more complete. Nutritive loss correction data is as shown in table 1, and group 1 is intelligence defrosting experiment group, and group 2 is defrosting plate defrosting matched group. Compared with defrosting plate solution chilled beef, heat pipe intelligence defrosting beef juice loss reduces 4.05%, and protein losses reduces 0.85%, and intelligence is thawed and significantly reduced juice loss, protein losses. In a word, heat pipe intelligence is thawed and is remained taste and the nutrition of frozen food better.
Table 1 nutritive loss contrast table
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2. save electric power. One, refrigerating chamber is divided into multiple, and corresponding refrigerating chamber only opened by access food every time, and cooling gas leakage amount only has original part. Its two, the cold of refrigerating chamber is transmitted to cold room, and the cold of course of defrosting is recycled.
3. comprehensively measuring and calculating, purchasing price improves, and use cost declines, and totle drilling cost slightly declines, and the user being suitable for all of level of consumption uses. Heat pipe intelligence refrigerator capable of defrosting improves the quality of frozen food when not increasing totle drilling cost, ensures that the kinsfolk of user is healthy.
In a word; although the present invention lists above-mentioned preferred implementation, but it should be mentioned that, although those skilled in the art can carry out various change and remodeling; unless such change and remodeling deviate from the scope of the present invention, otherwise should be construed as being included in protection scope of the present invention.

Claims (7)

1. heat pipe intelligence refrigerator capable of defrosting includes multiple independent, heat insulation refrigerating chamber and cold room, Single Chip Microcomputer (SCM) system controls each cold room and the temperature of each refrigerating chamber respectively, it is characterized in that, connecting with controlled heat pipe between cold room and refrigerating chamber, N refrigerating chamber is used for n-th thawed foodstuff.
2. the heat pipe intelligence refrigerator capable of defrosting described in claim 1, it is characterised in that: equipped with electromagnetic valve on heat pipe.
3. the heat pipe intelligence refrigerator capable of defrosting described in claim 1, it is characterised in that: the electromagnetic valve that Single Chip Microcomputer (SCM) system controls to install on heat pipe allows controlled heat pipe work, and makes cold room heat flow slowly into refrigerating chamber, and frozen food slowly thaws.
4. the heat pipe intelligence refrigerator capable of defrosting described in claim 1, it is characterised in that: heat pipe end is equipped with small fan.
5. the heat pipe intelligence refrigerator capable of defrosting described in claim 1, it is characterised in that: the heat pipe of refrigerating chamber is positioned at the bottom of refrigerating chamber, and the heat pipe of cold room is positioned at the top of cold room.
6. the heat pipe intelligence refrigerator capable of defrosting described in claim 1, it is characterized in that: each refrigerating chamber has a privately owned hermatic door, all refrigerating chambers have a public hermatic door, deposit, when taking frozen food, first open public hermatic door, opening the hermatic door that specific refrigerating chamber is privately owned again, the privately owned hermatic door of other refrigerating chamber is not switched on.
7. the using method of heat pipe intelligence refrigerator capable of defrosting, it comprises the following steps, it is characterised in that:
1) the outer room temperature change of Single Chip Microcomputer (SCM) system record refrigerator;
2) user is when food to be frozen put into by each refrigerating chamber, by Single Chip Microcomputer (SCM) system input equipment, sets taking the time of food in each refrigerating chamber, sets heat pipe and thaws and the time scale of defrosting naturally;
3) Single Chip Microcomputer (SCM) system tests the speed of the variations in temperature that heat pipe thaws and the speed of the variations in temperature naturally thawed, and calculates frozen food and starts the start time point of heat pipe defrosting and defrosting naturally;
4) Single Chip Microcomputer (SCM) system utilizes error that this intelligence of error prediction of the outer room temperature change curve of the refrigerator recorded the previous day and intelligence defrosting last time is thawed, and revises frozen food and starts the start time point that heat pipe thaws and naturally thaws;
5) error of actual thawing time and reservation thawing time is recorded, for the evaluation time that thaws next time.
CN201410234190.3A 2014-05-29 2014-05-29 Heat pipe intelligence refrigerator capable of defrosting Expired - Fee Related CN104165490B (en)

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CN201410234190.3A CN104165490B (en) 2014-05-29 2014-05-29 Heat pipe intelligence refrigerator capable of defrosting
PCT/CN2015/079778 WO2015180620A1 (en) 2014-05-29 2015-05-26 Refrigerator achieving intelligent unfreezing by means of heat pipes

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015180620A1 (en) * 2014-05-29 2015-12-03 广东海洋大学 Refrigerator achieving intelligent unfreezing by means of heat pipes
DE102015012306A1 (en) * 2015-08-06 2017-02-09 Liebherr-Hausgeräte Ochsenhausen GmbH Fridge and / or freezer
CN105157313A (en) * 2015-09-30 2015-12-16 广东海洋大学 Intelligent thawing refrigerator
CN105276919B (en) * 2015-11-27 2017-09-05 小米科技有限责任公司 Control method, device and the intelligent refrigerator of intelligent refrigerator
CN107080144A (en) * 2017-06-22 2017-08-22 合肥美菱股份有限公司 A kind of Quick thawing plate
CN107477967A (en) * 2017-09-26 2017-12-15 南京哈卢信息科技有限公司 With the intelligent refrigerator for rotating bracket
CN113865186B (en) * 2021-10-08 2023-05-12 上海铜爪智能科技有限公司 Mobile phone app linkage type intelligent pet small refrigerator capable of thawing at fixed time

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