CN104969137A - Control system for refrigerated equipment and apparatus with advanced energy saving features - Google Patents
Control system for refrigerated equipment and apparatus with advanced energy saving features Download PDFInfo
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- CN104969137A CN104969137A CN201380052416.1A CN201380052416A CN104969137A CN 104969137 A CN104969137 A CN 104969137A CN 201380052416 A CN201380052416 A CN 201380052416A CN 104969137 A CN104969137 A CN 104969137A
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- temperature
- control system
- evaporator
- storage compartment
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1951—Control of temperature characterised by the use of electric means with control of the working time of a temperature controlling device
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Defrosting Systems (AREA)
Abstract
The present invention discloses a control system to be applied to any refrigerated cabinet or any refrigerated apparatus equipped with a refrigerated storage compartment. This control system comprises an electronic controller with memory. This control system uses one or more temperature probes and is able to build a data set by extracting the temperature variation values from said temperature probes. This data set is used from the control system to build an analytical model able to identify two different operating modes for the apparatus named the normal mode and the energy saving mode, where the energy saving mode is defined as an operating period of time, for the apparatus, with a temperature higher than the temperature used during the normal mode.
Description
Technical field
Invention below describe a kind of for refrigerating equipment and device (for beverage with do not allow perishable food, hereinafter referred to as the consumer goods) control system, wherein control system above-mentioned, have or not used for the door entering refrigerated storage compartment, realize advanced power conservation feature.
The situation of prior art
Refrigerating equipment worldwide uses, because they provide in shop, restaurant, shopping center etc. (hereinafter referred to as sale shop) place, sell the ability of the consumer goods in optimum temperature (hereinafter referred to as transaction temperature or setting value (SETPOINT)).
As everyone knows, any refrigerating equipment realizes cooling/freezing circuit, wherein at least uses compressor, has or do not have the evaporator of fan, condenser and isolation/refrigerated storage compartment be in temperature (being called operation SETPOINT) lower than environment temperature to maintain the consumer goods.This makes the consumer goods have more attractive force and improves their consumption figure.Usually, the electronics of some types or mechanical control equipment are used to maintain the running temperature in refrigerating equipment.
The temperature that any product maintains lower than ambient temperature is all needed a large amount of energy ezpenditure, which results in the increase of the operation cost of dealer.For this reason, in recent years, many energy-conservation concepts have been incorporated in refrigerating equipment and (have reduced energy consumption and operation cost).
Note the situation of prior art
A kind of in existing solution only maintains the consumer goods to be in and to run SETPOINT during the business hours of selling shop, and uses the different temperatures higher than SETPOINT at non operation time.
Now, the most effective technology for the working temperature changing refrigerating equipment is summarized as follows:
Manual change SETPOINT: this needs, and peripheral operation person's is mutual, this needs operator to be set as temperature higher than SETPOINT before the down periods are faced in sale shop.This solution has following shortcoming, namely, this operation (changing SETPOINT) can not be performed always, and if SETPOINT has been changed, and can not be changeed back in the very first time after same sale store opens, (temperature inertness due to relevant to any commodity) is not in required SETPOINT by the true temperature of the consumer goods.
Automatically SETPOINT is changed by using clock electronic circuit.This solution needs additional electronic circuit and it can not detect the change of selling store opens and lockup, or the time caused due to the beginning of daylight-saving time or end changes.If there is these events, the SETPOINT of refrigerating equipment is arranged must by peripheral operation person's manual correction.
Be arranged on outside " use sensor " on refrigerating equipment (such as door sensor, there is sensor, vibration transducer etc.) automatically change SETPOINT by using.EP1540438B1 discloses this technology: it is very effective technology, because refrigerating equipment can change the SETPOINT temperature of commodity automatically according to the use of refrigerating equipment self or the change of selling store opens interval.In contrary, this solution needs on refrigerating equipment, install additional assembly.Such as door sensor, there is sensor etc.This all introduces extra cost concerning the starting material of refrigerating equipment and set-up time.
As the thermal environment managing some predictable refrigerating equipments perspective disclosed in patent US2007/0225871A1.This method uses a set of predefined action, and it performs when specific prophesy things occurs.This solution does not have adaptive ability and needs to realize predicting the difference of distinct device.
The another kind of technology reducing energy consumption optimizes the ON/OFF cycle of compressor: its object reduces the opening time of compressor.
Patent US2012/0059522A1 is disclosed a kind of realistic model of being used by analytical equipment and predictive mode and optimizes the method in compressor ON/OFF cycle by measuring inside and outside temperature.This permission increases efficiency by the time, but its needs to use outside temperature sensor, and this causes increasing the complicacy of the control system used and also introduces extra cost.
Patent EP2474799A2 disclose a kind of do not use any put into compartment self hygrosensor and control the method for refrigerated storage compartment temperature.By to measure and one or two signal compared from external temperature probes and supply voltage analyser performs temperature and regulates.Also the additional signal from door sensor can be used.These signals allow the operational mode producing refrigerating equipment, and this operational mode is used to the ON/OFF cycle of revising compressor.This method is based on once the hypothesis reaching required temperature and reach the plateau of compressor.It needs combination from the signal of separate sources and can not ensure that accurate temperature controls, and also can not show the true temperature of refrigerated storage compartment.In addition, must carry out specifically testing with the optimized operation pattern estimating any distinct device, this means the increase of complicacy and final cost.
For increasing refrigerating equipment efficiency and can to save energy consumption and cost-effective another kind of technology be optimize thawing cycle.Need thawing cycle to melt the ice that evaporator surface exists.In fact, the existence of the ice on evaporator surface makes the heat interchange of cooling circuit be deteriorated, and increases overall energy consumption.Prior art for optimizing thawing cycle is summarized as follows:
The closedown cycle thaws: in this case, and the compressor as a cooling circuit part stops according to the timetable preset and continues predetermined time interval.
There is thawing of evaporator temperature control: the hygrosensor device being arranged on evaporator surface is used to once measure temperature to meet and exceed preset value, just stop the operation of thawing cycle.When also use safety timer ensures in office why barrier, after past time of this safety timer, the thawing cycle of operation was all stopped.Identical with the previous case, thawing cycle follows default timetable.
Analyze by being arranged on the evaporator temperature trend measured by the evaporator detector on evaporator surface: in this case, the state (being usually considered to the state of potential heating) that ice is melting detected, and at the last pulsed modulation standard activation heating element of melting state, to optimize the duration of thawing cycle.Patent EP328151B1 discloses this method.
In the above-mentioned solution mentioned, the scheme changing SETPOINT and the scheme optimizing thawing cycle both lack for energy-conservation integrated control system.This control system should be used only in the resource existed in standard refrigerating equipment, and Automatic Optimal energy ezpenditure in any possible manner.
The invention solves these demands, combine and only maintain the ability of the low SETPOINT temperature of commodity in the business hours of selling shop, and in refrigerating equipment, do not introduce its operation any unwanted add-on assemble usually.In addition, the present invention by exist in refrigerating equipment and cause the various resources of energy ezpenditure to carry out integrated management and optimization and introduce a kind of energy-conservation concept newly.
Summary of the invention
The present invention seeks to be applied to any refrigerating equipment, to have or not used for the door entering refrigerated storage compartment, and use the hygrosensor (regulating detector and evaporator detector) existed to control the temperature of refrigerated storage compartment, and for estimating the time cycle that energy saver mode activates, " energy saver mode " refers to that refrigerated storage equipment is in temperature higher than any working hour of managing temperature here.For further information, refrigerating equipment is in any working hour of managing temperature, is defined as " normal mode " following.
Brief description of drawings
Fig. 1: show the structural drawing representing control system object of the present invention.Disclose input, export and they and electronic controller mutual.Table below demonstrates the explanation to the square occurred in Fig. 1.
Fig. 2: the process flow diagram describing the method that the functional mode about invention object uses.
Fig. 3: the process flow diagram describing the classification about any temperature variation measured by refrigerating equipment run duration.
Fig. 4: describe about during any energy saver mode, the process flow diagram of the management of thawing cycle.
Describe in detail
The present invention seeks to be applied to any refrigerating equipment, wherein the temperature of refrigerated storage compartment regulates and is controlled by electronic controller.In common document, a part for equipment, the temperature of refrigerated storage compartment regulates and is usually managed by temperature control system, and the one or more characteristic temperature trend measured by one or more hygrosensor by monitoring and managing.Such temperature control system is by supervising all parts (compressor, evaporator, condenser, fan, be shown in Fig. 1) of relating to and the temperature of conditioning equipment at the control.
The input of such temperature control system is defined as:
By the temperature using " the adjustment hygrosensor " be placed in the refrigerated storage compartment of equipment to control article;
Evaporator temperature is controlled by using " the evaporator detector " being placed on evaporator surface.This input is by the high-level efficiency of temperature control system for the heat interchange between the air that keeps evaporator and enter refrigerated storage compartment.This another kind of purposes inputted (and also performed by temperature control system) be avoid ice to be deposited on evaporator surface.
Condenser temperature is controlled by using the condenser detector be placed on condenser surface.This input is used to the high-level efficiency of the heat interchange kept between the surrounding air around condenser and equipment.
In addition, the some parts of some other functions, general knowledge document can be comprised: the security function of maximum temperature that these functions can be maximum temperature for checking article and reach because condenser or compressor postpone to activate in temperature control system, or other function that those skilled in the art can realize.
Recently, some are introduced into about the function of energy optimization.Some in them relate to management thawing cycle.The existing knowledge document describing the optimization method thawed can be summarized as follows:
Passive method: stop performing by compressor cycle and thaw.
Active method: by using hot gas, being also referred to as circulation reversion, or uses electrical heating elements to perform and thaw.
In two kinds of situations above, target melts the ice be present on evaporator surface.To the indirect effect of melting ice be introduced below: the quantity depending on the position of evaporator and the ice of existence, raise the temperature of refrigerated storage compartment.For this reason, first requirement optimizes duration of thawing cycle and timetable to limit the rising of refrigerated storage compartment temperature.Different modes is had to obtain this result:
Use special hygrosensor, evaporator detector, to check temperature on evaporator surface and to exceed once the temperature value measured the operation that preset value just interrupts thawing cycle.This simple solution is not optimized, because it does not consider the actual quantity of the ice on evaporator surface duration of thawing cycle and timetable.
The trend analyzing evaporator temperature curve, to detect ice-out state, is called potential heated condition, and only at the end of this melting state, just interrupts the operation of thawing cycle.This good method that can work to obtain when electronics thaws (initiatively defreezing method), can not adapt in those situations of the passive defreezing method of all uses (compressor shuts down).
EP0328151B1 discloses the existing methodical situation for thawing cycle.In such solution, by using the electrical heater elements of active drive to complete thawing cycle, until potential heated condition terminates, and pulsed modulation is until reach end thawing condition.Evaporator temperature trend is analyzed to detect the end of potential heated condition and to terminate thawing condition with prefixed time interval.
Invention describes a kind of innovative approach, by integrate following both evaporator temperature trend analysis also expand to use passive defreezing method equipment on:
Comparative analysis evaporator temperature trend and the adjustment temperature obtained by the accurate driving method of compressor and evaporator fan.Constantly monitoring regulates the difference between temperature and evaporator temperature to detect when reach default end thawing condition.
What use any " energy saver mode " starts thawing cycle.This temperature allowing controller to utilize and cause owing to changing to " energy saver mode " from " normal mode " increases, and at the end of any thawing cycle, uses this thermal gradient to reduce the demand to additional energy, to reach SETPOINT temperature.
Obtaining energy-conservation another kind of method is use different SETPOINT according to the condition of work of the equipment be under control.Such as, some are had here from the solution of state of the art:
Temperature SETPOINT is changed according to Preset Time table.This needs additional hardware, is referred to as real-time clock, and it must be manually set and depend on the business hours of selling shop.If if sale shop its business hours of change or time seasonally change, so this solution does not reach the result of expectation.
EP1540438B1 discloses a solution, and it uses different SETPOINT, allow dynamically to produce and update time interval.Multiple signals from " using sensor (such as door switch or vibration transducer) " are used to the using forestland realizing the equipment be under control.By this way, when some activities detected on equipment, required SETPOINT can be used, and between craticular stage, use the different temperatures value higher than SETPOINT temperature.This solution needs to use at least one " use sensor ", even if these sensors cause extra starting material and production cost concerning manufacturer.
The present invention proposes and avoid any " use sensor " but the possibility that energy-conservation advantage is still provided.The invention discloses the method for the change of a kind of analysis temperature instead of analytic activity signal (producing from using sensor).By this way, simplify production technology and decrease final cost concerning manufacturer.To replace at short notice and in a straightforward manner or equipment (refrigerating equipment) that finishing any one has been deposited in the art is also possible.Another aspect of the present invention uses different power-economizing methods and they are incorporated in identical control system, obtains and better carry into execution a plan.
For identifying the analytical model in energy-conservation period
The operational mode of control system (Fig. 1) and target of the present invention can be distinguished between the two following:
" normal mode ": the adjustment temperature that this operational mode is identified as refrigerated storage compartment equals the period of SETPOINT
" energy saver mode ": this operational mode is identified as the period of adjustment temperature higher than SETPOINT of refrigerated storage compartment.
Control system of the present invention uses electronic controller (C of Fig. 1), and it provides the Data Collection of the usable temp detector (A, B of Fig. 1) used in comfortable refrigerating equipment.This electronic controller is converted to data set the data of collecting, and with this data set of post analysis.Analysis result is the analytical model that automatically can change the operational mode of refrigerating equipment according to available output (E of Fig. 1, F, G and H).
Usually, control system object of the present invention is made up of following:
To be placed in refrigerated storage compartment and to be used to one or more hygrosensors (A, the B of Fig. 1) of regulating temperature and detecting any temperature variation.The described temperature variation measured by hygrosensor is classified as follows:
-short-term, changes, and it is defined as the temperature variation of moment.It causes due to any change of the equilibrium state of equipment in control.This may cause due to any padding of opening door or refrigerated storage compartment.
-middle change in period, it is defined as temperature variation slowly.It may cause towards the heat radiation of surrounding environment or day and night temperature variation subsequently or due to seasonal temperature variation due to equipment in control.
One in these hygrosensors can be placed on evaporator surface, to measure evaporator temperature and to control any thawing cycle.
The temperature variation (data set process) detected from usable temp detector can be collected, analyze, classify, processes and store to electronic controller (C of Fig. 1).This electronic controller drives disposable load, here " load " be meant to the equipment under controlling that is in, all elements, the parts that need energy, such as, compressor in equipment, fan, lamp and heating element (E of Fig. 1, F, G, H).By data set process, and by using internal algorithm, electronic controller can set up the analytical model run.By using this model, electronic controller can make the function of equipment be applicable to any particular case, between business temperature and power conservation requirement, provide optimum optimization.By this way, analytical model can allow equipment to run in two different situations: " energy saver mode " above-mentioned and " normal mode ".Analytical model will detect that any period of temperature variation is identified as " normal mode ", and is identified as " energy saver mode " any period not having detected temperatures to change.When " energy saver mode " is middle:
-SETPOINT by move to higher than business SETPONT value and rely on preset value.
-when the beginning of any " energy saver mode ", thawing cycle (Fig. 4) will be performed.
-duration of thawing cycle is optimized by the difference between regulating and controlling temperature and evaporator detector (17,18,19 of Fig. 4) temperature.By analyzing this difference, the proper timing of the operation stopping thawing can be determined.This allows thawing cycle robotization, and does not have any outside of the 3rd people to get involved.
-make thawing cycle robotization and optimization, (because the physical process relevant to any course of defrosting causes) temperature that the temperature of commodity increases decreased in refrigerated storage compartment raises, after end of thawing runs, need less energy to maintain SETPOINT.
Paragraph has below stated the detailed description of this analytical model:
A, upon power-up (1 of Fig. 2) reset the data-carrier store of electronic controller.Electronic controller performs and regulates to reach business SETPOINT (at the SETPOINT that any " normal mode " period uses), then by serviceability temperature mutation analysis (3 of Fig. 2,4,5,8 and Fig. 3) start design factor CDS (coefficient of diffusion of equipment).
B, in the stage that arranges (2 of Fig. 2) analyzing new PERIOD (period), and depend on preset configuration, electronic controller will start the scheduled period the new PERIOD analysis of (from 1 to 20 days).Any PERIOD is divided into the sub-interval of every 30 minutes and is called unit (CELLs).CELL is for collecting, analyzing and classify from all temperature datas (Fig. 3) of usable temp detector.
C, within the time intervals of any 30 minutes (equaling a CELL) (Fig. 3), algorithm stores higher than the quantity of the temperature variation (VT) (14 of Fig. 3) of coefficient CDS (11,12,13 of Fig. 3).At the end of any one CELL, the middle coefficient of diffusion of that CELL (CDC) is updated (15 of Fig. 3).
D, once a day, or any 48 CELLs are once, by the average (MVT) of temperature variation, as the mean value of nearest 48 storing values of VT.Then by the mean value of CDS coefficient update (8 of Fig. 2) for nearest 48 CDC values stored.Then according to the suitable VT number of CELL, algorithm classification belongs to the CELL of the PERIOD just completed:
If the VT number of the-the n-th CELL is greater than or equal to mean value MVT (11 of Fig. 2), so the n-th CELL is classified and belongs to " normal mode " (NM-CELL).
If the VT number subaverage MVT (11 of Fig. 2) of the-the n-th CELL, so the n-th CELL is classified and belongs to " energy saver mode " (ES-CELL).
The last operation of-algorithm is equipment systematic function model (11 of Fig. 2), and the CELL wherein belonging to same pattern is divided into one group.Filtrator is used to force any ES-CELL sequence lower than preset value (it depends on configuration) to belong to " normal mode ".
E, analyzing the step below performing during any new PERIOD:
-repeat the part (B) implemented here
-repeat the part (C) implemented here
If-by analysis, real CELL demonstrates the pattern (relative to last PERIOD) belonging to different, and so the operational mode of this CELL is changed (6,7 of Fig. 2) at once.
-repeat the part (D) implemented here.
Paragraph below provides the detailed description of management of automatically thawing:
A, beginning at any " energy saver mode ", start new thawing cycle (16 of Fig. 4).
B, electronic controller are according to the temperature contrast driver output (compressor (E of Fig. 1), evaporator fan (F of Fig. 1) and heating element (G of Fig. 1)) (17 of Fig. 4) regulated between evaporator temperature detector.
C, electronic controller calculate the temperature contrast between adjustment and evaporator temperature detector constantly.
D once said temperature difference here reaches preset value, the thawing cycle (19 of Fig. 4) during electronic controller is just out of service.
E, at the end of the thawing cycle run, electronic controller restarts to regulate, to reach and SETPOINT (20 of Fig. 4) required for maintaining.
Claims (5)
1. a control system, is applicable to refrigerator and any refrigerating equipment with refrigerated storage compartment,
-described control system can be run under normal mode or energy saver mode;
-described control system comprises the electronic controller with storer, and if necessity comprises command interface;
-described control system comprises the one or more hygrosensors for measuring and regulate described refrigerated storage compartment temperature;
-described control system by Extracting temperature changing value in the signal measured from described hygrosensor to set up data set;
It is characterized in that:
-described control system can use described data set to generate analytical model, and it is for being limited to the operation interval under normal mode or energy saver mode.
2. system according to claim 1, the operational mode that wherein the application permission activation two kinds of analytical model is different, activates described normal mode when temperature variation wherein being detected, activates described energy saver mode when temperature variation not detected.
3. system according to claim 2, wherein also activates thawing cycle while the described energy saver mode of each activation.
4. system according to claim 3, in wherein said hygrosensor a, hygrosensor that be defined as adjustment detector is used to regulate the temperature of described refrigerated storage compartment, and wherein, to be arranged on evaporator surface and another hygrosensor being defined as evaporator detector is used to control any thawing cycle.
5. system according to claim 4, wherein determines to stop thawing cycle by the difference between adjustment in use detector and evaporator detector automatically.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2012A001677 | 2012-10-08 | ||
| IT001677A ITMI20121677A1 (en) | 2012-10-08 | 2012-10-08 | CONTROL SYSTEM FOR REFRIGERATED EQUIPMENT AND SYSTEMS WITH ADVANCED ENERGY SAVING FUNCTIONS |
| PCT/IB2013/002205 WO2014057331A1 (en) | 2012-10-08 | 2013-10-02 | Control system for refrigerated equipment and apparatus with advanced energy saving features |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104969137A true CN104969137A (en) | 2015-10-07 |
| CN104969137B CN104969137B (en) | 2017-05-17 |
Family
ID=47278410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380052416.1A Active CN104969137B (en) | 2012-10-08 | 2013-10-02 | Control system for refrigerated equipment and apparatus with energy saving features |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN104969137B (en) |
| BR (1) | BR112015007697A2 (en) |
| DK (1) | DK178891B1 (en) |
| IT (1) | ITMI20121677A1 (en) |
| WO (1) | WO2014057331A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111076491A (en) * | 2018-10-22 | 2020-04-28 | 青岛海尔股份有限公司 | Refrigerator and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4932217A (en) * | 1988-02-11 | 1990-06-12 | Friedhelm Meyer | Process for controlling a heater, in particular a defrost heater for refrigerating plants |
| CN1680766A (en) * | 2004-04-09 | 2005-10-12 | 广东科龙电器股份有限公司 | Controlling system and method for refrigerator with time interval run |
| US20070225871A1 (en) * | 2006-03-24 | 2007-09-27 | Karstens Christopher K | Managing predictable thermal environments |
| US20120059522A1 (en) * | 2010-09-08 | 2012-03-08 | Engenharia Assistida Por Computador Ltda | Method for controlling the temperature on cooling machines based on real and predicted patterns of use and internal/external temperatures |
| EP2474799A2 (en) * | 2011-01-07 | 2012-07-11 | B.D.G. el S.r.l. | Temperature control systems |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1292014B1 (en) * | 1997-05-27 | 1999-01-25 | Rc Condizionatori Spa | EVAPORATOR DEFROST CONTROL IN AN AIR HEAT PUMP SYSTEM |
| US6745581B2 (en) | 2002-09-16 | 2004-06-08 | The Coca-Cola Company | Systems and methods for temperature control in refrigeration systems and heating systems |
| US7490477B2 (en) * | 2003-04-30 | 2009-02-17 | Emerson Retail Services, Inc. | System and method for monitoring a condenser of a refrigeration system |
| US20050177282A1 (en) * | 2004-01-16 | 2005-08-11 | Mason Paul L.Ii | Energy saving vending machine and control |
| US20060289553A1 (en) * | 2005-06-27 | 2006-12-28 | Ranco Incorporated Of Delaware | Adaptive energy usage profile management and control system for vending devices and the like |
| PL2719978T3 (en) * | 2012-10-15 | 2015-10-30 | Whirlpool Co | Method for controlling a domestic refrigeration appliance |
-
2012
- 2012-10-08 IT IT001677A patent/ITMI20121677A1/en unknown
-
2013
- 2013-10-02 CN CN201380052416.1A patent/CN104969137B/en active Active
- 2013-10-02 BR BR112015007697A patent/BR112015007697A2/en active Search and Examination
- 2013-10-02 WO PCT/IB2013/002205 patent/WO2014057331A1/en active Application Filing
-
2015
- 2015-04-29 DK DKPA201570251A patent/DK178891B1/en active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4932217A (en) * | 1988-02-11 | 1990-06-12 | Friedhelm Meyer | Process for controlling a heater, in particular a defrost heater for refrigerating plants |
| CN1680766A (en) * | 2004-04-09 | 2005-10-12 | 广东科龙电器股份有限公司 | Controlling system and method for refrigerator with time interval run |
| US20070225871A1 (en) * | 2006-03-24 | 2007-09-27 | Karstens Christopher K | Managing predictable thermal environments |
| US20120059522A1 (en) * | 2010-09-08 | 2012-03-08 | Engenharia Assistida Por Computador Ltda | Method for controlling the temperature on cooling machines based on real and predicted patterns of use and internal/external temperatures |
| EP2474799A2 (en) * | 2011-01-07 | 2012-07-11 | B.D.G. el S.r.l. | Temperature control systems |
| EP2474799A3 (en) * | 2011-01-07 | 2012-10-31 | B.D.G. el S.r.l. | Temperature control systems |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111076491A (en) * | 2018-10-22 | 2020-04-28 | 青岛海尔股份有限公司 | Refrigerator and control method thereof |
| CN111076491B (en) * | 2018-10-22 | 2020-10-30 | 海尔智家股份有限公司 | Refrigerator and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112015007697A2 (en) | 2017-07-04 |
| CN104969137B (en) | 2017-05-17 |
| DK178891B1 (en) | 2017-05-01 |
| WO2014057331A1 (en) | 2014-04-17 |
| ITMI20121677A1 (en) | 2014-04-09 |
| DK201570251A1 (en) | 2015-05-11 |
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