WO2005059454A1 - A cooling device and a control method - Google Patents
A cooling device and a control method Download PDFInfo
- Publication number
- WO2005059454A1 WO2005059454A1 PCT/IB2004/052808 IB2004052808W WO2005059454A1 WO 2005059454 A1 WO2005059454 A1 WO 2005059454A1 IB 2004052808 W IB2004052808 W IB 2004052808W WO 2005059454 A1 WO2005059454 A1 WO 2005059454A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- defrost
- tariff
- cheap
- time
- electric consumption
- Prior art date
Links
Classifications
-
- 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
- F25D21/002—Defroster control
- F25D21/006—Defroster control with electronic control circuits
-
- 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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/36—Visual displays
- F25D2400/361—Interactive visual displays
Definitions
- This invention relates to a cooling device that operates in accordance with the electric tariff, and a control method thereof.
- defrost procedure In cooling devices, humid air in the surroundings causes frost formation on evaporator since it has the coldest surface in the compartment.
- the accumulated frost on the evaporator surface should be removed by a defrost procedure applied at specific time intervals.
- the period of the defrost procedure is either determined by defrost control algorithms constructed with respect to certain parameters such as the amount of the frost accumulated on the evaporator, the frequency of the opening of the refrigerator door or the energy consumption, or defrost procedure is applied at predetermined intervals for a fixed amount of time.
- Electric distribution companies charge different tariffs for energy consumed at different periods of time in a day, so that, the applications that require large amount of energy are done at light load hours when the general energy consumption is relatively low.
- the time of the preset defrost periods may coincide with any electric consumption rate segment of the day, may it be a cheap discount rate segment, or an expensive high consumption rate segment, which, in turn, projects onto the consumer as high electric consumption expense.
- the aim of the present invention is the realization of a cooling device and a control method thereof, wherein defrost cycles are adjusted according to the electric tariff such that energy consumption expenditures are minimized.
- Fig.l - is a perspective view of a cooling device.
- Fig.2 - is a schematic representation of a control card, a defrost unit, a compressor and a control panel .
- Fig.3 - is a flowchart of a control method for a cooling device.
- Cooling device 1
- Compressor 3
- Defrost unit 5
- Control card 6
- Control panel 7 Control panel 7.
- the cooling device (1) preferably a no-frost refrigerator comprises a compressor (2) providing the realization of refrigeration cycle; an evaporator (3) wherein cooling of the internal volume of the cooling device (1) is achieved; a defrost unit (4) providing the removal of the frost accumulated on the evaporator; a control card (5) containing fixed or flexible defrost algorithms which determine the work schedule of defrost unit (4), and start and finish hours of the cheap electric consumption tariff determined by electric distribution companies, wherein the periods of defrost procedure, where large amounts of energy are consumed and which are determined by algorithms, are altered with respect to the start and finish hours of the cheap electric consumption tariff in order to reduce electric consumption expenditures; a control panel (6) wherein the start and finish hours of the cheap electric consumption tariff application are entered; and a clock circuit (7) providing the perception of the information concerning the time entered to control panel (6).
- the control card (5) can delay or precede the predetermined work time of defrost unit (4) with respect to the recorded start and finish hours of cheap electric consumption tariff. If there is an oncoming defrost procedure according to the predetermined algorithm at the times close to the start of cheap electric consumption tariff and within the expensive tariff period, the control card (5) delays this defrost procedure to be applied later within the cheap tariff period, and records the new defrost time delayed to the cheap tariff period. If there is an oncoming defrost procedure according to the predetermined algorithm at the times a little after the finish of cheap electric consumption tariff and within the expensive tariff period, the control card (5) precedes this defrost procedure to be applied within the cheap tariff period, and records the new defrost time preceded as to be within the cheap tariff period.
- Tstart is the start hour of the cheap electric consumption tariff determined by electric distribution company.
- Tfinish is the finish hour of the cheap electric consumption tariff determined by electric distribution company.
- Td is the starting times of the periodic defrost procedures.
- TI As the time interval preceding the cheap electric consumption tariff period determined by the manufacturer in order to delay the periodic defrost procedures which take place in the expensive tariff slot preceding the start of the cheap electric consumption tariff. For example, if the length of TI is specified as 4 hours, the defrost procedure that should start 4 hours (or less) before the start of the cheap tariff, is delayed as to be performed within the cheap tariff period.
- T2 is the time interval following the cheap electric consumption tariff period determined by the manufacturer in order to move the periodic defrost procedures which have remained within the expensive tariff period and after the finish of cheap electric consumption tariff period to an earlier time slot. For example, if the length of T2 is specified as 2 hours, the defrost procedure that should start within 2 hours after the finish of the cheap tariff is moved to an earlier time slot as to be performed in the cheap tariff period.
- Tdn is the new defrost periods altered and reset with respect to the cheap electric tariff.
- the defrost procedure of the cooling device (1) is controlled as follows : - Run the cooling device (1) (100), - Record the start hour of cheap electric consumption tariff (Tstart) and the finish hour of cheap electric consumption tariff (Tfinish) (101), - Determine the next periodic defrost time (Td) ( 102), - Check whether the defrost time (Td) is within the time interval between the start and finish hours of the cheap electric consumption tariff (Tstart Td Tfinish) (103), - If Tstart D Td D Tfinish then initiate defrost procedure at the periodic defrost time (Td) by checking with the clock circuit (7) (104), - Go to step (102) where the next periodic defrost time (Td) is determined, - If the defrost time (Td) is not within the time interval between the start and finish hours of the cheap electric consumption tariff, then check whether the defrost time (Td) is within the before-cheap-tariff time interval (TI) (105), .
- an electric consumption meter adjusted to both cheap and expensive electric tariff should be used.
- the defrost periods set in the cooling device (1) by the manufacturer will be reset for a later or earlier time so that more predefined defrost procedures are completed within the cheap electric tariff determined by the electric distribution company and less predefined defrost procedures are completed within the expensive electric tariff, thereby decreasing the electric consumption expense of the consumer.
Abstract
This invention relates to a cooling device (1) wherein more defrost procedures are applied within the cheap electric tariff determined by the electric distribution company and less are applied within the expensive electric tariff by changing the work schedule of the defrost unit (4) predefined by fixed or flexible defrost algorithms thereby decreasing the electric consumption cost projected onto the consumer.
Description
A COOLING DEVICE AND A CONTROL METHOD
This invention relates to a cooling device that operates in accordance with the electric tariff, and a control method thereof.
In cooling devices, humid air in the surroundings causes frost formation on evaporator since it has the coldest surface in the compartment. The accumulated frost on the evaporator surface should be removed by a defrost procedure applied at specific time intervals. The period of the defrost procedure is either determined by defrost control algorithms constructed with respect to certain parameters such as the amount of the frost accumulated on the evaporator, the frequency of the opening of the refrigerator door or the energy consumption, or defrost procedure is applied at predetermined intervals for a fixed amount of time. Although with defrost procedure the efficiency of refrigeration is increased by preventing the accumulation of frost, the result is an increase in the cost of energy consumption because the procedure requires large amount of energy thereby affecting the consumer negatively. Electric distribution companies charge different tariffs for energy consumed at different periods of time in a day, so that, the applications that require large amount of energy are done at light load hours when the general energy consumption is relatively low. In cooling devices the time of the preset defrost periods may coincide with any electric consumption rate segment of the day, may it be a cheap discount rate segment, or an expensive high consumption rate segment, which, in turn, projects onto the consumer as high electric consumption expense.
In the United States Patent Document US5515692, by continuously measuring energy consumption level of a cooling system, the amount and the period of consumption are monitored, wherein defrost procedure is applied when energy consumption level is at a minimum.
In the European Patent Application EP0285035, a description is given of an arrangement to operate an electrical home device when the preselected tariff or a cheaper tariff is in force, if at least two electric consumption tariffs are in application.
The aim of the present invention is the realization of a cooling device and a control method thereof, wherein defrost cycles are adjusted according to the electric tariff such that energy consumption expenditures are minimized.
The cooling device and its control method designed to fulfill the objectives of the present invention are illustrated on the attached figures where:
Fig.l - is a perspective view of a cooling device.
Fig.2 - is a schematic representation of a control card, a defrost unit, a compressor and a control panel .
Fig.3 - is a flowchart of a control method for a cooling device.
Elements shown on figures are numbered as follows: 1 Cooling device 2 Compressor 3 Evaporator 4 Defrost unit 5 Control card 6. Control panel 7. Clock circuit
The cooling device (1) preferably a no-frost refrigerator comprises a compressor (2) providing the realization of refrigeration cycle; an evaporator (3) wherein cooling of the internal volume of the cooling device (1) is achieved; a defrost unit (4) providing the removal of the frost accumulated on the evaporator; a control card (5) containing fixed or flexible defrost algorithms which determine the work schedule of defrost unit
(4), and start and finish hours of the cheap electric consumption tariff determined by electric distribution companies, wherein the periods of defrost procedure, where large amounts of energy are consumed and which are determined by algorithms, are altered with respect to the start and finish hours of the cheap electric consumption tariff in order to reduce electric consumption expenditures; a control panel (6) wherein the start and finish hours of the cheap electric consumption tariff application are entered; and a clock circuit (7) providing the perception of the information concerning the time entered to control panel (6).
The control card (5) can delay or precede the predetermined work time of defrost unit (4) with respect to the recorded start and finish hours of cheap electric consumption tariff. If there is an oncoming defrost procedure according to the predetermined algorithm at the times close to the start of cheap electric consumption tariff and within the expensive tariff period, the control card (5) delays this defrost procedure to be applied later within the cheap tariff period, and records the new defrost time delayed to the cheap tariff period. If there is an oncoming defrost procedure according to the predetermined algorithm at the times a little after the finish of cheap electric consumption tariff and within the expensive tariff period, the control card (5) precedes this defrost procedure to be applied within the cheap tariff period, and records the new defrost time preceded as to be within the cheap tariff period.
If there is a change at the start and finish hours of cheap electric consumption tariff, new tariff information can be recorded and the defrost unit (4) can be operated accordingly.
In order to explain the control method of the cooling device according to the present invention, the following symbols are utilized:
Tstart : is the start hour of the cheap electric consumption tariff determined by electric distribution company.
Tfinish : is the finish hour of the cheap electric consumption tariff determined by electric distribution company.
Td : is the starting times of the periodic defrost procedures.
TI As the time interval preceding the cheap electric consumption tariff period determined by the manufacturer in order to delay the periodic defrost procedures which take place in the expensive tariff slot preceding the start of the cheap electric consumption tariff. For example, if the length of TI is specified as 4 hours, the defrost procedure that should start 4 hours (or less) before the start of the cheap tariff, is delayed as to be performed within the cheap tariff period.
T2 : is the time interval following the cheap electric consumption tariff period determined by the manufacturer in order to move the periodic defrost procedures which have remained within the expensive tariff period and after the finish of cheap electric consumption tariff period to an earlier time slot. For example, if the length of T2 is specified as 2 hours, the defrost procedure that should start within 2 hours after the finish of the cheap tariff is moved to an earlier time slot as to be performed in the cheap tariff period.
Tdn : is the new defrost periods altered and reset with respect to the cheap electric tariff.
The defrost procedure of the cooling device (1) is controlled as follows : - Run the cooling device (1) (100), - Record the start hour of cheap electric consumption tariff (Tstart) and the finish hour of cheap electric consumption tariff (Tfinish) (101), - Determine the next periodic defrost time (Td) ( 102), - Check whether the defrost time (Td) is within the time interval between the start and finish hours of the cheap electric consumption tariff (Tstart Td Tfinish) (103),
- If Tstart D Td D Tfinish then initiate defrost procedure at the periodic defrost time (Td) by checking with the clock circuit (7) (104), - Go to step (102) where the next periodic defrost time (Td) is determined, - If the defrost time (Td) is not within the time interval between the start and finish hours of the cheap electric consumption tariff, then check whether the defrost time (Td) is within the before-cheap-tariff time interval (TI) (105), . - If the defrost time (Td) is within the before-cheap-tariff time interval (TI), then delay the periodic defrost procedure (Td) as to be performed between the starting time (Tstart) and the finishing time (Tfinish) of the cheap tariff period (106), - Initialize the defrost procedure at the new periodic defrost time (Tdn) by checking with the clock circuit (7) (107) - Go to step (102) where the next periodic defrost time (Td) is determined, - If the defrost time (Td) is not within the before-cheap-tariff time interval (TI), then check whether it is within the after-cheap-tariff time interval (T2) (108), - If the defrost time (Td) is within the after-cheap-tariff time interval (T2), then precede the periodic defrost procedure (Td) as to be performed between the starting time (Tstart) and the finishing time (Tfinish) of the cheap tariff period (109), - Initialize the defrost procedure at the new periodic defrost time (Tdn) by checking with the clock circuit (7) (107), - Go to step (102) where the next periodic defrost time (Td) is determined, - If the defrost time (Td) is not within the after-cheap-tariff time interval (T2), then initialize the defrost procedure at the periodic defrost time (Td) by checking with the clock circuit (7) (104), - Go to step (102) where the next periodic defrost time (Td) is determined.
In order to decrease the electric consumption cost, together with the method which is the subject of the present invention, an electric consumption meter adjusted to both cheap and expensive electric tariff should be used. The defrost periods set in the
cooling device (1) by the manufacturer will be reset for a later or earlier time so that more predefined defrost procedures are completed within the cheap electric tariff determined by the electric distribution company and less predefined defrost procedures are completed within the expensive electric tariff, thereby decreasing the electric consumption expense of the consumer.
Claims
1 - A cooling device (1) comprising - a compressor (2) providing the realization of refrigeration cycle, - an evaporator (3) wherein cooling of the internal volume of the cooling device (1) is achieved, - a defrost unit (4) providing the removal of the frost accumulated on the evaporator,
and characterized by a control card (5) comprising - fixed or flexible defrost algorithms which determine the work schedule of defrost unit (4), - and start and finish hours of the cheap electric consumption tariff determined by electric distribution companies,
wherein the periods of defrost procedure, where large amounts of energy are consumed and which are determined by algorithms, are altered with respect to the start and finish hours of the cheap electric consumption tariff in order to reduce electric consumption expenditures.
2 - A cooling device (1) as described in Claim 1, characterized by a control card (5) which delays an oncoming defrost procedure according to the predetermined algorithm at the times close to the start of cheap electric consumption tariff and within the expensive tariff period, to be applied later within the cheap tariff period and records the new defrost time delayed to the cheap tariff period.
3 - A cooling device (1) as described in Claim 1, characterized by a control card (5) which precedes an oncoming defrost procedure according to the predetermined
algorithm at the times a little after the finish of cheap electric consumption tariff and within the expensive tariff period, to be applied within the cheap tariff period and records the new defrost time preceded to be within the cheap tariff period.
4 - A cooling device (1) as described in Claim 1, characterized by a clock circuit (7) providing the perception of the information concerning the time entered to control panel (6).
5 - A control method for a cooling device (1) described in Claim 1, comprising the steps wherein he start and finish hours of the cheap electric consumption tariff are entered and the periods of defrost procedures determined by algorithms are altered by the control card (5) with respect to the start and finish hours of cheap electric consumption tariff.
6 - A control method as described in Claim 5, comprising the steps* wherein a defrost procedure within the cheap electric consumption tariff period by delaying the time of an oncoming defrost procedure at the times close to the start of cheap electric consumption tariff is carried out, and a defrost procedure within the cheap electric consumption tariff period by preceding the time of an oncoming defrost procedure at the times a little after the finish of cheap electric consumption tariff is applied, via the control card (5).
7 - A control method for a cooling device (1) as described in Claim 6, comprising the following steps;
Run the cooling device (1) (100), Record the start hour of cheap electric consumption tariff (Tstart) and the finish hour of cheap electric consumption tariff (Tfinish) (101), Determine the next periodic defrost time (Td) (102),
- Check whether the defrost time (Td) is within the time interval between the start and finish hours of the cheap electric consumption tariff (Tstart Td Tfinish) (103),
- If Tstart D Td D Tfinish then initiate defrost procedure at the periodic defrost time (Td) by checking with the clock circuit (7) (104),
- Go to step (102) where the next periodic defrost time (Td) is determined,
- If the defrost time (Td) is not within the time interval between the start and finish hours of the cheap electric consumption tariff, then check whether the defrost time (Td) is within the before-cheap-tariff time interval (TI) (105), - If the defrost time (Td) is within the before-cheap-tariff time interval (TI), then delay the periodic defrost procedure (Td) as to be performed between the starting time (Tstart) and the finishing time (Tfinish) of the cheap tariff period (106),
- Initialize the defrost procedure at the new periodic defrost time (Tdn) by checking with the clock circuit (7) ( 107),
- Go to step (102) where the next periodic defrost time (Td) is determined, - If the defrost time (Td) is not within the before-cheap-tariff time interval (TI), then check whether it is within the after-cheap-tariff time interval (T2) (108),
- If the defrost time (Td) is within the after-cheap-tariff time interval (T2), then precede the periodic defrost procedure (Td) as to be performed between the starting time (Tstart) and the finishing time (Tfinish) of the cheap tariff period (109),
- Initialize the defrost procedure at the new periodic defrost time (Tdn) by checking with the clock circuit (7) (107), - Go to step (102) where the next periodic defrost time (Td) is determined,
- If the defrost time (Td) is not within the after-cheap-tariff time interval (T2), then initialize the defrost procedure at the periodic defrost time (Td) by checking with the clock circuit (7) (104),
- Go to step (102) where the next periodic defrost time (Td) is determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04806573A EP1709376A1 (en) | 2003-12-15 | 2004-12-15 | A cooling device and a control method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR200302171 | 2003-12-15 | ||
| TR2003/02171 | 2003-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005059454A1 true WO2005059454A1 (en) | 2005-06-30 |
Family
ID=34699278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2004/052808 WO2005059454A1 (en) | 2003-12-15 | 2004-12-15 | A cooling device and a control method |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1709376A1 (en) |
| RU (1) | RU2337282C2 (en) |
| TR (1) | TR200603434T1 (en) |
| WO (1) | WO2005059454A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2354737A2 (en) | 2009-12-29 | 2011-08-10 | BSH Bosch und Siemens Hausgeräte GmbH | Freezing device and method for controlling same |
| DE102010063757A1 (en) * | 2010-12-21 | 2012-06-21 | BSH Bosch und Siemens Hausgeräte GmbH | Method and device for operating a household appliance and household appliance |
| CN102734897A (en) * | 2012-07-12 | 2012-10-17 | 青岛海尔空调电子有限公司 | Method for automatically adjusting time of special running of air conditioning unit aiming at tiered pricing for electricity |
| EP2336688A3 (en) * | 2009-12-11 | 2013-04-03 | Vestel Beyaz Esya Sanayi Ve Ticaret A.S. | A method of regulating defrost operation in cooling devices |
| CN103017474A (en) * | 2011-09-27 | 2013-04-03 | 泰州乐金电子冷机有限公司 | Refrigerator and defrosting method thereof |
| US10066865B2 (en) | 2008-12-18 | 2018-09-04 | BSH Hausgeräte GmbH | Refrigerator and method for the temperature control in a refrigerator |
| CN115307370A (en) * | 2022-06-23 | 2022-11-08 | 新奥数能科技有限公司 | Air cooler defrosting control method and device based on Yun Bian coordination |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515692A (en) * | 1993-12-09 | 1996-05-14 | Long Island Lighting Company | Power consumption determining device and method |
| EP0895333A2 (en) * | 1997-07-29 | 1999-02-03 | ITF-EDV Fröschl GmbH | System for consumption and/or tariff dependent control of power loads, in particular electrical power loads |
| US6026651A (en) * | 1998-07-21 | 2000-02-22 | Heat Timer Corporation | Remote controlled defrost sequencer |
| EP1225406A2 (en) * | 2001-01-18 | 2002-07-24 | JTL Systems Limited | Defrost control method and apparatus |
| US6694753B1 (en) * | 2001-07-17 | 2004-02-24 | Robertshaw Controls Company | Defrost delay module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20031395A1 (en) | 2003-07-09 | 2005-01-10 | Whirlpool Co | TEMPORALLY ADDRESSED AUTOMATIC DEFROST COOLER. |
-
2004
- 2004-12-15 TR TR2006/03434T patent/TR200603434T1/en unknown
- 2004-12-15 RU RU2006125421/12A patent/RU2337282C2/en not_active IP Right Cessation
- 2004-12-15 EP EP04806573A patent/EP1709376A1/en not_active Withdrawn
- 2004-12-15 WO PCT/IB2004/052808 patent/WO2005059454A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515692A (en) * | 1993-12-09 | 1996-05-14 | Long Island Lighting Company | Power consumption determining device and method |
| EP0895333A2 (en) * | 1997-07-29 | 1999-02-03 | ITF-EDV Fröschl GmbH | System for consumption and/or tariff dependent control of power loads, in particular electrical power loads |
| US6026651A (en) * | 1998-07-21 | 2000-02-22 | Heat Timer Corporation | Remote controlled defrost sequencer |
| EP1225406A2 (en) * | 2001-01-18 | 2002-07-24 | JTL Systems Limited | Defrost control method and apparatus |
| US6694753B1 (en) * | 2001-07-17 | 2004-02-24 | Robertshaw Controls Company | Defrost delay module |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1709376A1 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10066865B2 (en) | 2008-12-18 | 2018-09-04 | BSH Hausgeräte GmbH | Refrigerator and method for the temperature control in a refrigerator |
| EP2336688A3 (en) * | 2009-12-11 | 2013-04-03 | Vestel Beyaz Esya Sanayi Ve Ticaret A.S. | A method of regulating defrost operation in cooling devices |
| EP2354737A2 (en) | 2009-12-29 | 2011-08-10 | BSH Bosch und Siemens Hausgeräte GmbH | Freezing device and method for controlling same |
| DE102010063757A1 (en) * | 2010-12-21 | 2012-06-21 | BSH Bosch und Siemens Hausgeräte GmbH | Method and device for operating a household appliance and household appliance |
| WO2012084663A1 (en) | 2010-12-21 | 2012-06-28 | BSH Bosch und Siemens Hausgeräte GmbH | Method and apparatus for operating a domestic appliance and domestic appliance |
| US9927777B2 (en) | 2010-12-21 | 2018-03-27 | BSH Hausgeräte GmbH | Method and apparatus for operating a domestic appliance and domestic appliance |
| CN103017474A (en) * | 2011-09-27 | 2013-04-03 | 泰州乐金电子冷机有限公司 | Refrigerator and defrosting method thereof |
| CN102734897A (en) * | 2012-07-12 | 2012-10-17 | 青岛海尔空调电子有限公司 | Method for automatically adjusting time of special running of air conditioning unit aiming at tiered pricing for electricity |
| CN115307370A (en) * | 2022-06-23 | 2022-11-08 | 新奥数能科技有限公司 | Air cooler defrosting control method and device based on Yun Bian coordination |
| CN115307370B (en) * | 2022-06-23 | 2024-03-05 | 新奥数能科技有限公司 | Defrosting control method and device for air cooler based on Yun Bian coordination |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2006125421A (en) | 2008-01-27 |
| RU2337282C2 (en) | 2008-10-27 |
| TR200603434T1 (en) | 2006-10-26 |
| EP1709376A1 (en) | 2006-10-11 |
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