CN102003767B - Control method and device for assistant electrical heating of air conditioner - Google Patents
Control method and device for assistant electrical heating of air conditioner Download PDFInfo
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- CN102003767B CN102003767B CN2009101716535A CN200910171653A CN102003767B CN 102003767 B CN102003767 B CN 102003767B CN 2009101716535 A CN2009101716535 A CN 2009101716535A CN 200910171653 A CN200910171653 A CN 200910171653A CN 102003767 B CN102003767 B CN 102003767B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention provides control method and device for assistant electrical heating of an air conditioner. The method comprises the following steps: an over-zero signal detecting module detects the over-zero time of electric source signals; and a main control module controls the conducting time of a switch module according to the over-zero time to adjust voltage applied to both ends of an assistant electrical heating module of the air conditioner.
Description
Technical field
The present invention relates to field of household appliances, in particular to a kind of control method for air-conditioning auxiliary electrical heater and device.
Background technology
The inventor finds air-conditioning auxiliary electrical heater control model in the prior art, can only simply control and open or close two states, and the heating power of control auxiliary electrical heater that can not be continuous cause the efficient of air-conditioning lower, and then the comfortableness that causes the user to experience is relatively poor.
Summary of the invention
The present invention aims to provide a kind of control method for air-conditioning auxiliary electrical heater and device, can solve air-conditioning auxiliary electrical heater control model in the prior art, can only simply control and open or close two states, the heating power of control auxiliary electrical heater that can not be continuous, cause the efficient of air-conditioning lower, and then the relatively poor problem of the comfortableness that causes the user to experience.
In an embodiment of the present invention, provide a kind of control method for air-conditioning auxiliary electrical heater, may further comprise the steps: the zero cross signal detection module detects the zero-crossing timing of power supply signal; Main control module is applied to the voltage at the auxiliary electrical heater module two ends of air-conditioning with adjusting according to the ON time of zero-crossing timing gauge tap module.
In an embodiment of the present invention, also provide a kind of control device for air-conditioning auxiliary electrical heater, having comprised: zero cross signal detection module, main control module and switch module, wherein, the zero cross signal detection module is connected electrically between power supply and the main control module, for detection of the zero-crossing timing of the signal of telecommunication; Main control module is used for the ON time according to zero-crossing timing gauge tap module; Switch module is electrically connected with power supply, main control module and auxiliary electrical heater module respectively, is used for conducting and disconnection according to the control command control auxiliary electrical heater module of main control module.
In the above-described embodiments, operating voltage by real-time control air-conditioning auxiliary electrical heater two ends, thereby realize the automatic control to its heating power size, energy saving when having improved the air-conditioning heating operation, improved the comfortableness that the user experiences, can effectively reduce simultaneously the starting current of heater members, realize soft start, effectively avoid starting current to the impact of electrical network, and also can reduce auxiliary electrical heater to the control circuit wire diameter, the requirements such as the thin width of pcb board copper, reach and reduce the product cost purpose, overcome air-conditioning auxiliary electrical heater control model in the prior art, can only simply control and open or close two states, the heating power of control auxiliary electrical heater that can not be continuous, cause the efficient of air-conditioning lower, and then the relatively poor problem of the comfortableness that causes the user to experience.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 shows the control method flow chart that is used for according to an embodiment of the invention air-conditioning auxiliary electrical heater;
Fig. 2 shows the control device schematic diagram that is used for according to an embodiment of the invention air-conditioning auxiliary electrical heater;
Fig. 3 shows the according to an embodiment of the invention circuit diagram of zero cross signal detection module;
Fig. 4 shows according to an embodiment of the invention switch module operation principle schematic diagram;
Fig. 5 shows according to an embodiment of the invention control principle drawing;
Fig. 6 shows the circuit theory diagrams that are used for according to an embodiment of the invention air-conditioning auxiliary electrical heater.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 shows the control method flow chart that is used for according to an embodiment of the invention air-conditioning auxiliary electrical heater, may further comprise the steps:
S102, the zero cross signal detection module detects the zero-crossing timing of power supply signal;
S104, main control module are applied to the voltage at the auxiliary electrical heater module two ends of air-conditioning with adjusting according to the ON time of zero-crossing timing gauge tap module.
In the present embodiment, operating voltage by real-time control air-conditioning auxiliary electrical heater two ends, thereby realize the automatic control to its heating power size, energy saving when having improved the air-conditioning heating operation, improved the comfortableness that the user experiences, can effectively reduce simultaneously the starting current of heater members, realize soft start, effectively avoid starting current to the impact of electrical network, and also can reduce auxiliary electrical heater to the control circuit wire diameter, the requirements such as the thin width of pcb board copper, reach and reduce the product cost purpose, overcome air-conditioning auxiliary electrical heater control model in the prior art, can only simply control and open or close two states, the heating power of control auxiliary electrical heater that can not be continuous, cause the efficient of air-conditioning lower, and then the relatively poor problem of the comfortableness that causes the user to experience.
Preferably, in above-mentioned control method, main control module specifically comprises with the voltage that adjusting is applied to the auxiliary electrical heater module two ends of described air-conditioning according to the ON time of described zero-crossing timing gauge tap module:
Signal acquisition module gathers operating temperature and the current parameters of air-conditioning;
Main control module is applied to the voltage at the auxiliary electrical heater module two ends of air-conditioning with adjusting according to the ON time of operating temperature, current parameters and zero-crossing timing gauge tap module.
In the present embodiment, by detecting operating temperature and the current parameters of air-conditioning, judge the heating power demand of air-conditioning auxiliary electrical heating, control in real time the operating voltage at air-conditioning auxiliary electrical heater two ends, thereby realize the automatic control to its heating power size, energy saving when having improved the air-conditioning heating operation, improved the comfortableness that the user experiences, can effectively reduce simultaneously the starting current of heater members, realize soft start, effectively avoid starting current to the impact of electrical network, and also can reduce auxiliary electrical heater to the control circuit wire diameter, the requirements such as the thin width of pcb board copper, reach and reduce the product cost purpose, overcome air-conditioning auxiliary electrical heater control model in the prior art, can only simply control and open or close two states, the heating power of control auxiliary electrical heater that can not be continuous, cause the efficient of air-conditioning lower, and then the relatively poor problem of the comfortableness that causes the user to experience.
Preferably, in above-mentioned control method, main control module specifically comprises with the voltage that adjusting is applied to the auxiliary electrical heater module two ends of air-conditioning according to the ON time of operating temperature, current parameters and zero-crossing timing gauge tap module: judge that whether operating temperature and current parameters are greater than first threshold; If operating temperature and current parameters are greater than first threshold, main control module prolongs phase time Δ t, and wherein, Δ t is that main control module sends the ON time of trigger pulse triggers switch module and the time difference of zero-crossing timing.
Preferably, in above-mentioned control method, further comprising the steps of: as if operating temperature and current parameters are not more than first threshold, to judge that whether operating temperature and current parameters are less than Second Threshold; If operating temperature and current parameters be less than Second Threshold, reducing △t.
Preferably, in above-mentioned control method, further comprising the steps of: as if operating temperature and current parameters are not less than Second Threshold, to keep Δ t constant.
Preferably, in above-mentioned control method, the frequency of power supply is 50Hz, and the span of Δ t is 0ms～10ms.
Preferably, in above-mentioned control method, operating temperature comprise following one of at least: air-conditioner pipe temperature, indoor temperature, air inlet/air outlet temperature and inside and outside part temperatures of air-conditioning.
Fig. 2 shows the control device schematic diagram that is used for air-conditioning auxiliary electrical heater according to an embodiment of the utility model, comprise: zero cross signal detection module 20, main control module 30 and switch module 40, wherein, zero cross signal detection module 20, be connected electrically between power supply 50 and the main control module, for detection of the zero-crossing timing of the signal of telecommunication; Main control module is used for the ON time according to the zero-crossing timing gauge tap module of zero cross signal detection module 20 detections; Switch module 40 is electrically connected with power supply, main control module and auxiliary electrical heater module 60 respectively, is used for conducting and disconnection according to the control command control auxiliary electrical heater module of main control module, is applied to the voltage at auxiliary electrical heater module two ends with control.
In the present embodiment, operating voltage by real-time control air-conditioning auxiliary electrical heater two ends, thereby realize the automatic control to its heating power size, energy saving when having improved the air-conditioning heating operation, improved the comfortableness that the user experiences, can effectively reduce simultaneously the starting current of heater members, realize soft start, effectively avoid starting current to the impact of electrical network, and also can reduce auxiliary electrical heater to the control circuit wire diameter, the requirements such as the thin width of pcb board copper, reach and reduce the product cost purpose, overcome air-conditioning auxiliary electrical heater control model in the prior art, can only simply control and open or close two states, the heating power of control auxiliary electrical heater that can not be continuous, cause the efficient of air-conditioning lower, and then the relatively poor problem of the comfortableness that causes the user to experience.
Preferably, in above-mentioned control device, main control module specifically comprises: signal gathering unit and main control unit, wherein
Signal gathering unit is electrically connected to main control unit, is used for gathering operating temperature and the current parameters of air-conditioning;
Main control unit is used for the ON time according to operating temperature, current parameters and the zero-crossing timing gauge tap module of signal gathering unit collection, is master chip CPU.
In the present embodiment, by detecting operating temperature and the current parameters of air-conditioning, judge the heating power demand of air-conditioning auxiliary electrical heating, control in real time the ON time of air-conditioning auxiliary electrical heater, thereby control the operating voltage at its two ends, thereby realize the automatic control to its heating power size, energy saving when having improved the air-conditioning heating operation, improved the comfortableness that the user experiences, can effectively reduce simultaneously the starting current of heater members, realize soft start, effectively avoid starting current to the impact of electrical network, and also can reduce auxiliary electrical heater to the control circuit wire diameter, the requirements such as the thin width of pcb board copper reach and reduce the product cost purpose, have overcome air-conditioning auxiliary electrical heater control model in the prior art, can only simply control and open or close two states, the heating power of control auxiliary electrical heater that can not be continuous causes the efficient of air-conditioning lower, and then the relatively poor problem of the comfortableness that causes the user to experience.
Preferably, the zero passage detection module comprises: the first diode, the second diode, the 3rd diode, the 4th diode, the 5th diode, the first resistance, the second resistance, the 3rd resistance, the first triode, the first electric capacity, the second electric capacity and voltage-stabilized power supply, wherein, the first diode that is cascaded and the second diode and the 3rd diode and the 4th diodes in parallel that are cascaded, the negative electrode of the first diode and the 3rd diode is electrically connected with power supply respectively, and the anode of the first diode and the 3rd diode is electrically connected with voltage-stabilized power supply respectively; The negative electrode of the second diode and the 4th diode is electrically connected with the anode of the 5th diode and an end of the first resistance respectively, and the negative electrode of the 5th diode is electrically connected with voltage-stabilized power supply; The other end of the first resistance is electrically connected with an end of the second resistance, an end of the first electric capacity and the base stage of the first triode respectively, the other end of the other end of the second resistance, the first electric capacity and ground connection after the emitter stage of the first triode is in parallel; One end of the colelctor electrode of the first triode, the second electric capacity and an end of the 3rd resistance are electrically connected with main control module respectively, the other end ground connection of the second electric capacity, and the other end of the 3rd resistance is electrically connected to voltage-stabilized power supply.
Fig. 3 shows the according to an embodiment of the invention circuit diagram of zero cross signal detection module; As shown in Figure 3, AC power 220V input transformer 2, transformer output is passed through diode 7 clamped effects again by diode 3,4,5,6 rectifications, guarantee that current waveform in full-wave rectifier voltage is applied on the divider resistance 9,10, when the triode conducting during greater than the conducting voltage of triode of the voltage on the resistance 10, the level of then inputting master chip CPU30 is dragged down, otherwise the level of input master chip CPU30 be height, when the level of input master chip CPU30 changes, the expression current over-zero. Electric capacity 11,14 is for filter action, and resistance 13 is metering function, and 8 for the module such as voltage stabilizing and VDD is provided.Air-conditioning work environmental information such as Guan Wen, the room temperature of master chip CPU30 by collecting, advance/the air outlet temperature, electric current, air-conditioning inside and outside part temperatures etc., judge air-conditioning auxiliary electrical heater heating power demand, by regulating the phase time Δ t among Fig. 3, the instant control that realizes the auxiliary electrical heater heating power.
Preferably, switch module comprises: the 4th resistance, the 5th resistance, the second triode and switch element, and wherein, the 4th resistance is connected electrically between the base stage of main control module and the second triode; The grounded emitter of the second triode, the 5th resistance are connected electrically between the colelctor electrode and switch element of the second triode.
Preferably, switch element is two-way half control type IGCT.
Preferably, switch element is solid-state relay.
Preferably, switch element is controllable silicon.
Fig. 4 shows according to an embodiment of the invention switch module operation principle schematic diagram, as shown in the figure, the IGCT that belongs to two-way half control type, solid-state relay, the similar device such as controllable silicon, it then automatically shuts down when current zero-crossing point, when master chip CPU30 to IGCT, solid-state relay, controllable silicon is sent out then conducting of trigger impulse, its operation principle as shown in Figure 6, when master chip CPU30 sends the conducting trigger impulse, the 6th diode current flow, IGCT, solid-state relay, similar device 2 conductings such as controllable silicon are so that alternating current is applied on the auxiliary electrical heater heater members.
As shown in Figure 4, when the chip level changes, represent one time zero passage, the similar device such as IGCT, solid-state relay, controllable silicon turn-offs at this moment.Master chip CPU30 according to the air-conditioning work environmental information such as Guan Wen, the room temperature that collect, advance/the air outlet temperature, electric current, air-conditioning inside and outside part temperatures etc., sending the time of control trigger impulse, namely by regulating Δ t, namely regulate the time interval that the similar devices such as IGCT, solid-state relay, controllable silicon automatically shut down again conducting, can control the ON time of air-conditioning auxiliary electrical heater, thereby control the voltage swing at its two ends, the voltage at its two ends and Δ t are inversely proportional to, under the 50HZ supply frequency, the Δ t time can be regulated in 0ms～10ms.
Preferably, operating temperature comprise following one of at least: air-conditioner pipe temperature, indoor temperature, air inlet/air outlet temperature and inside and outside part temperatures of air-conditioning.
Fig. 5 shows the according to an embodiment of the invention control principle drawing of main control module, as shown in Figure 5, master chip CPU30 is main control unit, signal gathering unit comprises temperature sampling subelement 101 and current sample subelement 102,20 zero cross signal detection modules, master chip CPU30 is to IGCT, solid-state relay, the SCR trigger pulse of switch module 40 for providing.
Fig. 6 shows the circuit theory diagrams that are used for according to an embodiment of the invention air-conditioning auxiliary electrical heater, as shown in the figure, 201 is the air-conditioning auxiliary electrical heater heater members, when master chip 30 sends trigger impulse, diode 204 conductings, IGCT, solid-state relay, silicon-controlled device 202 conductings are so that alternating current is applied on the auxiliary electrical heater heater members 201.
From above description, can find out, the above embodiments of the present invention have realized following technique effect: the operating voltage of controlling in real time the air-conditioning auxiliary electrical heater two ends, thereby realize the automatic control to its heating power size, comfortableness, energy saving when improving the air-conditioning heating operation, reduce the starting current of heater members, realize soft start, effectively avoid starting current to the impact of electrical network.Also can reduce simultaneously auxiliary electrical heater to requirements such as control circuit wire diameter, the thin width of pcb board copper, thereby reduce product cost.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a control method that is used for air-conditioning auxiliary electrical heater is characterized in that, may further comprise the steps:
The zero cross signal detection module detects the zero-crossing timing of power supply signal;
Main control module is applied to the voltage at the auxiliary electrical heater module two ends of described air-conditioning with adjusting according to the ON time of described zero-crossing timing gauge tap module, this step comprises: signal acquisition module gathers operating temperature and the current parameters of air-conditioning; Main control module is applied to the voltage at the auxiliary electrical heater module two ends of described air-conditioning with adjusting according to the ON time of described operating temperature, described current parameters and described zero-crossing timing gauge tap module;
Wherein, main control module specifically comprises with the voltage that adjusting is applied to the auxiliary electrical heater module two ends of described air-conditioning according to the ON time of described operating temperature, described current parameters and described zero-crossing timing gauge tap module: judge that whether described operating temperature and described current parameters are greater than first threshold; If described operating temperature and described current parameters are greater than described first threshold, main control module prolongs phase time Δ t, wherein, described Δ t is that described main control module sends the time of the described switch module conducting of trigger pulse triggers and the time difference of described zero-crossing timing.
2. control method according to claim 1 is characterized in that, and is further comprising the steps of:
If described operating temperature and described current parameters are not more than described first threshold,
Judge that whether described operating temperature and described current parameters are less than Second Threshold;
If described operating temperature and described current parameters less than described Second Threshold, reduce described Δ t.
3. control method according to claim 2 is characterized in that, and is further comprising the steps of:
If described operating temperature and described current parameters are not less than described Second Threshold, keep described Δ t constant.
4. control method according to claim 1 is characterized in that, the frequency of described power supply is 50Hz, and the span of described Δ t is 0ms～10ms.
5. control method according to claim 1 is characterized in that, described operating temperature comprise following one of at least:
Air-conditioner pipe temperature, indoor temperature, air inlet/air outlet temperature and inside and outside part temperatures of air-conditioning.
6. the control device of the described control method control of an employing such as claim 1-5 any one air-conditioning auxiliary electrical heater is characterized in that, comprising: zero cross signal detection module, main control module and switch module, wherein
The zero cross signal detection module is connected electrically between power supply and the described main control module, for detection of the zero-crossing timing of described power supply signal;
Main control module is for the ON time of controlling described switch module according to the described operating temperature of signal acquisition module collection, described current parameters and described zero-crossing timing;
Described switch module is electrically connected with power supply, described main control module and described auxiliary electrical heater module respectively, is used for controlling according to the control command of described main control module conducting and the disconnection of described auxiliary electrical heater module.
7. control device according to claim 6 is characterized in that, described main control module specifically comprises: signal gathering unit and main control unit, wherein
Described signal gathering unit is electrically connected to described main control unit, is used for gathering operating temperature and the current parameters of air-conditioning;
Described main control unit is for the ON time of controlling described switch module according to the described operating temperature of signal gathering unit collection, described current parameters and described zero-crossing timing.
8. control device according to claim 6, it is characterized in that, described zero cross signal detection module comprises: the first diode, the second diode, the 3rd diode, the 4th diode, the 5th diode, the first resistance, the second resistance, the 3rd resistance, the first triode, the first electric capacity, the second electric capacity and voltage-stabilized power supply, wherein
Described the first diode that is cascaded and described the second diode and described the 3rd diode and described the 4th diodes in parallel that are cascaded, the negative electrode of described the first diode and described the 3rd diode is electrically connected with described power supply respectively, and the anode of described the first diode and described the 3rd diode is electrically connected with described voltage-stabilized power supply respectively;
The negative electrode of described the second diode and described the 4th diode is electrically connected with the anode of described the 5th diode and an end of described the first resistance respectively, and the negative electrode of described the 5th diode is electrically connected with described voltage-stabilized power supply;
The other end of described the first resistance is electrically connected with an end of an end of described the second resistance, described the first electric capacity and the base stage of described the first triode respectively, the other end of the other end of described the second resistance, described the first electric capacity and ground connection after the emitter stage of described the first triode is in parallel;
One end of the colelctor electrode of described the first triode, described the second electric capacity and an end of described the 3rd resistance are electrically connected with described main control module respectively, the other end ground connection of described the second electric capacity, and the other end of described the 3rd resistance is electrically connected to described voltage-stabilized power supply.
9. control device according to claim 6 is characterized in that, described switch module comprises: the 4th resistance, the 5th resistance, the second triode and switch element, wherein
Described the 4th resistance is connected electrically between the base stage of described main control module and described the second triode;
The grounded emitter of described the second triode, described the 5th resistance are connected electrically between the colelctor electrode and described switch element of described the second triode.
10. control device according to claim 9 is characterized in that, described switch element is two-way half control type IGCT or solid-state relay or controllable silicon.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101716535A CN102003767B (en) | 2009-09-02 | 2009-09-02 | Control method and device for assistant electrical heating of air conditioner |
| PCT/CN2010/076510 WO2011026424A1 (en) | 2009-09-02 | 2010-08-31 | Control method and apparatus for auxiliary electric heating of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009101716535A CN102003767B (en) | 2009-09-02 | 2009-09-02 | Control method and device for assistant electrical heating of air conditioner |
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| CN102003767A CN102003767A (en) | 2011-04-06 |
| CN102003767B true CN102003767B (en) | 2013-04-10 |
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| WO (1) | WO2011026424A1 (en) |
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| CN103062859B (en) * | 2011-10-19 | 2015-06-10 | 珠海格力电器股份有限公司 | Air conditioner with auxiliary heating system and control method thereof |
| CN104425184A (en) * | 2013-08-23 | 2015-03-18 | 海尔集团公司 | Control device for switching on and switching off relay and air conditioner |
| CN105299819B (en) * | 2014-07-08 | 2018-06-01 | 美的集团武汉制冷设备有限公司 | The heating control device and its Poewr control method of air conditioner |
| CN104132421B (en) * | 2014-07-11 | 2017-10-03 | 广东美的制冷设备有限公司 | The control method and control system of air conditioner |
| CN104930601B (en) * | 2015-06-25 | 2019-05-24 | 广东美的制冷设备有限公司 | A kind of air-conditioner outdoor unit and its control method of electrified heating device |
| CN106403142B (en) * | 2015-07-31 | 2019-05-24 | 青岛海尔空调电子有限公司 | Multi-online air-conditioning system indoor unit abnormal power-down guard method |
| CN105698336A (en) * | 2016-02-01 | 2016-06-22 | 四川长虹电器股份有限公司 | Sectional heating control system and method for sectional electric heating tube |
| CN105929273B (en) * | 2016-04-29 | 2019-08-20 | 青岛海尔空调电子有限公司 | Air conditioner and its indoor unit electric heater starting detection system and method |
| CN109237717B (en) * | 2018-11-27 | 2020-12-04 | 奥克斯空调股份有限公司 | Air conditioner electric heating thermal protection method and device and air conditioner |
| CN111237997B (en) * | 2020-01-19 | 2021-04-20 | 广东美的制冷设备有限公司 | Air conditioner and control method and control device thereof |
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| CN1325849C (en) * | 2005-03-28 | 2007-07-11 | 广东科龙电器股份有限公司 | Air conditioner with constant air outlet temperature and control method therefor |
| CN1987258B (en) * | 2005-12-23 | 2010-08-25 | 乐金电子(天津)电器有限公司 | Variable frequency air conditioner and power factor compensating method for variable frequency air conditioner |
| CN101267197A (en) * | 2008-04-15 | 2008-09-17 | 美的集团有限公司 | Control device and control method for reducing average drive current of silicon controlled rectifier |
| JP2009261143A (en) * | 2008-04-17 | 2009-11-05 | Panasonic Corp | Power supply apparatus and air conditioner equipped with the same |
| CN201438021U (en) * | 2009-09-02 | 2010-04-14 | 珠海格力电器股份有限公司 | Control device of air-conditioning auxiliary electrical heater |
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| CN102003767A (en) | 2011-04-06 |
| WO2011026424A1 (en) | 2011-03-10 |
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