CN105135533A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
- Publication number
- CN105135533A CN105135533A CN201510650387.XA CN201510650387A CN105135533A CN 105135533 A CN105135533 A CN 105135533A CN 201510650387 A CN201510650387 A CN 201510650387A CN 105135533 A CN105135533 A CN 105135533A
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- Prior art keywords
- heating unit
- conditioner
- air
- electric heater
- fuse
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
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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
- F24F2110/00—Control inputs relating to air properties
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/30—Condensation of water from cooled air
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to an air conditioner which comprises a first heating unit, wherein the first heating unit comprises a first electric heater and a first switching device which is connected with the first electric heater in series; and the first heating unit is used for closing the first switching device before, during or after the condensation of the air conditioner, so that the first electric heater can perform heating, thereby removing and/or preventing condensation. The air conditioner can remove and/or prevent condensation through the operation of the first heating unit, thereby preventing the condensation water from being thrown out of the air port when the air conditioner operates in the cooling mode. The invention also relates to a control method of the air conditioner.
Description
Technical field
The present invention relates to air-conditioning technical field, be specifically related to a kind of air-conditioner.The invention still further relates to the control method of this air-conditioner.
Background technology
The air conditioner with auxiliary heating function more gets consumer reception compared to common air conditioner, because the former is in order to adapt to high-power heating operation in winter, electric heater unit has been set up in indoor apparatus of air conditioner, utilize electric heater unit and heat exchanger jointly to heat room air, thus heat faster, heating capacity is also larger.
But electric heater unit does not normally run in cooling in summer pattern.Because air humidity in summer is larger, when cooling operation, indoor machine evaporation easily produces condensation water, and due to the particularity (near evaporimeter and air outlet) of air conditioning electric heating device installation site, the surface radiating sheet of electric heater unit also can gather condensation water, and along with agitating of indoor set fan blade, the condensation water on electric heater can be thrown out of by air port and drop on indoor.Cause the decline of comfort level and other puzzlement to user thus.
Therefore, be necessary to make air-conditioner to improve to avoid above-mentioned phenomenon.
Summary of the invention
Based on above-mentioned present situation, main purpose of the present invention is to provide a kind of air-conditioner, and it is by removing or prevent condensation, and when avoiding running in cooling mode, condensation water throws away from air port.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of air-conditioner, described air-conditioner comprises the first heating unit; Described first heating unit comprises: the first electric heater, and first switching device of connecting with described first electric heater; Wherein, described first heating unit was used for before described air-conditioner produces condensation, when or closed first switching device afterwards, the first electric heater is heated, to remove and/or to prevent condensation.
Preferably, described first heating unit also comprises the first temperature limiter, and described first temperature limiter is connected with described first electric heater; Wherein, described first temperature limiter is used for disconnecting when described first electric heater temperature anomaly being detected.
Preferably, described first heating unit also comprises the first fuse, and described first fuse is connected with described first temperature limiter; Wherein, described first fuse is used for performing fusing operation when described first temperature limiter temperature anomaly being detected.
Preferably, described air-conditioner also comprises the second heating unit; Described second heating unit comprises: the second electric heater, and the second switch device of connecting with described second electric heater; Wherein, described second heating unit is in parallel with described first heating unit.
Preferably, described second heating unit also comprises the second temperature limiter, and the second fuse; Described second temperature limiter and described second fuse are connected with described second electric heater; Wherein, described second temperature limiter is used for disconnecting when described second electric heater temperature anomaly being detected; And wherein, described second fuse is used for performing fusing operation when described second temperature limiter temperature anomaly being detected.
Preferably, described air-conditioner also comprises the 3rd temperature limiter, and described 3rd temperature limiter is connected with the parallel circuit in series of described second heating unit and described first heating unit; Wherein, described 3rd temperature limiter is used for disconnecting when the second heating unit circuit being detected and/or the first heating unit circuit temperature is abnormal.
Preferably, described first heating unit also comprises the 3rd fuse, and described 3rd fuse is connected with described first electric heater; Wherein, described 3rd fuse is used for: when described first heating unit energising when described 3rd temperature limiter temperature anomaly being detected, perform fusing operation; And/or
Described second heating unit also comprises the 4th fuse, and described 4th fuse is connected with described second electric heater; Wherein, described 4th fuse is used for: when described second heating unit energising when described 3rd temperature limiter temperature anomaly being detected, perform fusing operation.
Another aspect of the present invention additionally provides the control method of aforementioned air-conditioner, and it comprises step:
When not detecting whether described air-conditioner produces condensation or when detecting that described air-conditioner produces condensation, control the first heating unit electrified regulation, to remove and/or to prevent condensation.Preferably, described control first heating unit electrified regulation, specifically comprises: control the first heating unit and be energized all the time, or controls the first heating unit intermittence energising.
Preferably, the energising of described control first heating unit intermittence, specifically comprises:
When not detecting described air-conditioner and whether producing condensation, control the periodically energising of described first heating unit, each energising duration is the first setting duration;
Or when detecting that described air-conditioner produces condensation, control the periodically energising of described first heating unit, each energising duration is the second setting duration;
Or, when detecting that described air-conditioner produces condensation, controlling described first heating unit energising, after detecting that the condensation of described air-conditioner disappears, controlling described first heating unit power-off.
Preferably, after control first heating unit electrified regulation, also comprise: after the temperature of described first heating unit meets or exceeds design temperature, control the first heating unit and stop electrified regulation.
Air-conditioner of the present invention, by means of the work of the first heating unit, can remove and/or prevent condensation, thus when avoiding air-conditioner to run in cooling mode, condensation water throws away from air port.
Accompanying drawing explanation
Hereinafter with reference to accompanying drawing, the preferred embodiment of the present invention is described.In figure:
Fig. 1 is the exemplary electrical connection diagram of the only heating unit for air-conditioner of the present invention;
Fig. 2 is the exemplary electrical connection diagram of two heating units for air-conditioner of the present invention.
Detailed description of the invention
According to thinking of the present invention, heating unit (preferred electric heating unit, such as, comprise electric heater) is set in air-conditioner for performing the function removed condensation or prevent condensation from producing in refrigeration mode.Such as, at the electric heater heating needing to make when removing condensation in heating unit, thus condensation water (condensation water on such as electric heater surface) can be dried.Again such as, the electric heater heating in heating unit can be made before producing condensation, thus suppress the generation of condensation water.
Fig. 1 shows the exemplary electrical connection diagram of an only heating unit of air-conditioner used in the present invention.In figure, electric heater 2 and temperature limiter 1, fuse 3, switching device (such as relay) 4 and the electric heating unit master switch (such as relay) 5 of heating are cascaded.When after power-on of air conditioner, electric heating unit master switch 5 closes conducting, if system judges that conditions present meets the condition of startup, then switching device 4 closes conducting, and electric heater 2 starts heating.When electric heater 2 surface temperature reaches certain preset temperature, temperature limiter 1 action under the effect of this surface temperature, makes circuit disconnect, protects.When temperature limiter 1 returns to default recovery temperature, temperature limiter 1 closes, and make circuit turn-on, electric heater 2 is started working again.Fuse 3 shields; when temperature limiter 1 occur abnormal conditions (as contact adhesion, period short circuit etc.) cause reaching temperature spot but cannot disconnect in time time; fuse 3 realizes fuse protection according to the requirement of design, prevents electric heater surface temperature too high, ensures safety.
Fig. 2 shows the exemplary electrical connection diagram of two of air-conditioner used in the present invention heating unit in parallel.Comprising switching device (such as relay) 14,24 and two electric heaters 12,22, described two electric heaters 12,22 are connected in independent electric heater branch road separately, each electric heater branch circuit parallel connection connects, and is all serially connected with an aforesaid switching device in each electric heater branch road.Preferably, also comprise temperature limiter 1, temperature limiter 1 with in parallel after each electric heater branch road be in series.Alternatively, temperature limiter also can be connected in each electric heater branch road.
Because two heating units of parallel connection include an electric heater, and each electric heater all can be connected separately, and thus, one of them heating unit can be used for except condensation function, and another heating unit such as can be used for auxiliary heating function.Such as, the heating unit (can be described as the first heating unit) that wherein power is little can be used for except condensation function, and high-power heating unit (can be described as the second heating unit) can be used for auxiliary heating function when air-conditioning heating runs.
Such as, when summer air-conditioning is in refrigeration mode, when needing the condensation water removing electric heater surface or when preventing condensation water, only can make the electric heater conducting of the first heating unit, thus produce appropriate heat to be dried by condensation water, thus the phenomenon preventing water from throwing away from air port occurs.When air-conditioning is in heating mode in the winter time, when auxiliary heating function enabled by needs, the electric heater in the second heating unit (can be described as the second electric heater) conducting can be made.Certainly, two equal conductings of electric heater can now also be made, to provide the auxiliary heating of relatively high power.
Temperature limiter with in parallel after the mode that is in series of each electric heater branch road, in the protecting control circuit that a temperature limiter can be shared in two heating units, can cost be saved, and ensure the security reliability of control circuit.
Particularly, the power of the first electric heater and the second electric heater can be determined according to specifying informations such as types.
By making the power of two electric heaters not identical, two electric heaters can be respectively used to different objects.Such as, powerful second electric heater 22 is only for performing the object (this heater can be described as body heater) of auxiliary heating in the winter time for this reason, low power first electric heater 12 then can only for removing condensation object (for this reason, this heater can be described as auxiliary heater).Certainly, the first electric heater 12 in the winter time heating operation time can participate in the function of auxiliary heating equally.
Preferably, be all serially connected with fuse (such as, fuse 13 and 23) in each electric heater branch road, thus respectively each electric heater 12,22 protected, to prevent the electric heater temperature when temperature limiter 1 breaks down too high.
Preferably, also comprise heating unit master switch 5, such as relay, thus be convenient to power on to electric heating unit entirety, power operation.
Preferably, two electric heaters can comprise PTC electric heater and/or resistance heater.Such as, each electric heater all can adopt PTC electric heater, or all adopts resistance heater; Also can be that a part of electric heater adopts PTC electric heater, and another part electric heater adopt resistance heater.Such as, the first electric heater can adopt PTC electric heater, and the second electric heater can adopt resistance heater, otherwise or.Because PTC electric heater has the advantages such as long service life, electric conversion efficiency are high, automatic constant-temperature, thus can preferably adopt.
Dry the thinking of condensation water according to above-mentioned employing heating unit, the present invention provide in particular a kind of air-conditioner, and described air-conditioner comprises the first heating unit; Described first heating unit comprises: the first electric heater 12, and first switching device 14 of connecting with described first electric heater 12; Wherein, described first heating unit was used for before described air-conditioner produces condensation, when or closed first switching device 14 afterwards, the first electric heater 12 is heated, to remove and/or to prevent condensation.
Such as, before air-conditioner produces condensation, closed first switching device, can prevent the generation of condensation; And to produce when condensation or closed first switching device afterwards at air-conditioner, then can dry condensation.And whether condensation is produced for air-conditioner, easily judge by arranging humidity sensor.
Preferably, described first heating unit can also comprise the first temperature limiter (not shown), and described first temperature limiter is connected with described first electric heater 12; Wherein, described first temperature limiter is used for disconnecting when described first electric heater 12 temperature anomaly being detected.
Preferably, described first heating unit can also comprise the first fuse 13, and described first fuse 13 is connected with described first temperature limiter; Wherein, described first fuse 13 is for performing fusing operation when described first temperature limiter temperature anomaly being detected.
Preferably, described air-conditioner can also comprise the second heating unit; Described second heating unit comprises: the second electric heater 22, and the second switch device 24 of connecting with described second electric heater 22; Wherein, described second heating unit is in parallel with described first heating unit.
Preferably, described second heating unit can also comprise the second temperature limiter (not shown), and the second fuse 23; Described second temperature limiter and described second fuse 23 are connected with described second electric heater 22; Wherein, described second temperature limiter is used for disconnecting when described second electric heater 22 temperature anomaly being detected; And wherein, described second fuse 23 is for performing fusing operation when described second temperature limiter temperature anomaly being detected.
Preferably, described air-conditioner can also comprise the 3rd temperature limiter 1, and described 3rd temperature limiter 1 is connected with the parallel circuit in series of described second heating unit and described first heating unit; Wherein, described 3rd temperature limiter 1 is for disconnecting when the second heating unit circuit being detected and/or the first heating unit circuit temperature is abnormal.
Preferably, described first heating unit can also comprise the 3rd fuse (not shown), and described 3rd fuse is connected with described first electric heater 12; Wherein, described 3rd fuse is used for: when described first heating unit energising when described 3rd temperature limiter 1 temperature anomaly being detected, perform fusing operation; And/or described second heating unit can also comprise the 4th fuse (not shown), described 4th fuse is connected with described second electric heater 22; Wherein, described 4th fuse is used for: when described second heating unit energising when described 3rd temperature limiter 1 temperature anomaly being detected, perform fusing operation.
By above-mentioned setting, when air-conditioner of the present invention runs under cooling in summer pattern, easily avoid by starting the first heating unit the phenomenon that water throws away from air port.
Another aspect of the present invention additionally provides the control method of aforementioned air-conditioner, and it comprises step:
When not detecting whether described air-conditioner produces condensation or when detecting that described air-conditioner produces condensation, control the first heating unit electrified regulation, to remove and/or to prevent condensation.
Preferably, described control first heating unit electrified regulation, can comprise: control the first heating unit electrified regulation all the time, or controls the first heating unit intermittence energising.
Also namely, the mode connecting the first electric heater can for connecting or connecting for intermittent and keep time of determining all the time.
When the first electric heater capacity connected when removing condensation is less and ambient humidity is higher, the mode remaining that the first electric heater is connected can be adopted, to realize continuous heating, thus guarantee that electric heater does not accumulate condensation water on the surface.
When ambient humidity is lower, or when the first electric heater capacity connected when removing condensation is moderate, connection is remained without the need to the first electric heater, then can adopt the intermittent mode connecting the first electric heater, each connection keeps the time determined afterwards, to ensure during this period of time to be dried by the condensation water on electric heater surface.
Preferably, the energising of described control first heating unit intermittence, specifically can comprise following several mode:
When not detecting described air-conditioner and whether producing condensation, control the periodically energising of described first heating unit, each energising duration is the first setting duration.Such as, the first setting duration can be arrive several tens minutes in several minutes, to space-number minute can arrive several tens minutes, even several hours between energising next time after periodic power-down.
Or when detecting that described air-conditioner produces condensation, control the periodically energising of described first heating unit, each energising duration is the second setting duration.Such as, the second setting duration can be greater than the first setting duration.
Or, when detecting that described air-conditioner produces condensation, controlling described first heating unit energising, after detecting that the condensation of described air-conditioner disappears, controlling described first heating unit power-off.
Wherein, the first setting duration, the second setting duration can be determined according to concrete type, environmental condition etc., to guarantee that condensation can not accumulate the degree thrown away with the wind and is as the criterion before next time connects.
Preferably, after control first heating unit electrified regulation, also comprise: after the temperature of described first heating unit meets or exceeds design temperature, control the first heating unit and stop electrified regulation.This measure can prevent that heating-up temperature is too high or the heat time is long, thus plays the effect of safeguard protection.Wherein, described design temperature can be determined according to the type of concrete type, primary heater and the factor such as power and configuration mode thereof.
By above-mentioned control method, can guarantee that air-conditioner does not have water to throw away from air port when refrigerating operaton, and energy consumption is lower.
Those skilled in the art will readily understand, under the prerequisite of not conflicting, above-mentioned each preferred version freely can combine, superpose.
Be to be understood that, above-mentioned embodiment is only exemplary, and it is nonrestrictive, when not departing from general principle of the present invention, the various obvious or equivalent amendment that those skilled in the art can make for above-mentioned details or replacement, all will be contained in right of the present invention.
Claims (11)
1. an air-conditioner, is characterized in that, described air-conditioner comprises the first heating unit;
Described first heating unit comprises: the first electric heater, and first switching device of connecting with described first electric heater;
Wherein, described first heating unit was used for before described air-conditioner produces condensation, when or closed first switching device afterwards, the first electric heater is heated, to remove and/or to prevent condensation.
2. air-conditioner as claimed in claim 1, it is characterized in that, described first heating unit also comprises the first temperature limiter, and described first temperature limiter is connected with described first electric heater;
Wherein, described first temperature limiter is used for disconnecting when described first electric heater temperature anomaly being detected.
3. air-conditioner as claimed in claim 2, it is characterized in that, described first heating unit also comprises the first fuse, and described first fuse is connected with described first temperature limiter;
Wherein, described first fuse is used for performing fusing operation when described first temperature limiter temperature anomaly being detected.
4. air-conditioner as claimed in claim 1, it is characterized in that, described air-conditioner also comprises the second heating unit;
Described second heating unit comprises: the second electric heater, and the second switch device of connecting with described second electric heater;
Wherein, described second heating unit is in parallel with described first heating unit.
5. air-conditioner as claimed in claim 4, it is characterized in that, described second heating unit also comprises the second temperature limiter, and the second fuse;
Described second temperature limiter and described second fuse are connected with described second electric heater;
Wherein, described second temperature limiter is used for disconnecting when described second electric heater temperature anomaly being detected;
And wherein, described second fuse is used for performing fusing operation when described second temperature limiter temperature anomaly being detected.
6. air-conditioner as claimed in claim 4, it is characterized in that, described air-conditioner also comprises the 3rd temperature limiter, and described 3rd temperature limiter is connected with the parallel circuit in series of described second heating unit and described first heating unit;
Wherein, described 3rd temperature limiter is used for disconnecting when the second heating unit circuit being detected and/or the first heating unit circuit temperature is abnormal.
7. air-conditioner as claimed in claim 6, it is characterized in that, described first heating unit also comprises the 3rd fuse, and described 3rd fuse is connected with described first electric heater; Wherein, described 3rd fuse is used for: when described first heating unit energising when described 3rd temperature limiter temperature anomaly being detected, perform fusing operation; And/or
Described second heating unit also comprises the 4th fuse, and described 4th fuse is connected with described second electric heater; Wherein, described 4th fuse is used for: when described second heating unit energising when described 3rd temperature limiter temperature anomaly being detected, perform fusing operation.
8. the control method of the air-conditioner as described in one of claim 1-7, it comprises step:
When not detecting whether described air-conditioner produces condensation or when detecting that described air-conditioner produces condensation, control the first heating unit electrified regulation, to remove and/or to prevent condensation.
9. control method as claimed in claim 8, it is characterized in that, described control first heating unit electrified regulation, specifically comprises:
Control the first heating unit to be energized all the time, or control the first heating unit intermittence energising.
10. control method as claimed in claim 9, is characterized in that, the energising of described control first heating unit intermittence, specifically comprises:
When not detecting described air-conditioner and whether producing condensation, control the periodically energising of described first heating unit, each energising duration is the first setting duration;
Or when detecting that described air-conditioner produces condensation, control the periodically energising of described first heating unit, each energising duration is the second setting duration;
Or, when detecting that described air-conditioner produces condensation, controlling described first heating unit energising, after detecting that the condensation of described air-conditioner disappears, controlling described first heating unit power-off.
11. control methods as described in one of claim 8-10, is characterized in that, after control first heating unit electrified regulation, also comprise:
After the temperature of described first heating unit meets or exceeds design temperature, control the first heating unit and stop electrified regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650387.XA CN105135533A (en) | 2015-10-09 | 2015-10-09 | Air conditioner and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650387.XA CN105135533A (en) | 2015-10-09 | 2015-10-09 | Air conditioner and control method thereof |
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| CN105135533A true CN105135533A (en) | 2015-12-09 |
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| CN201510650387.XA Pending CN105135533A (en) | 2015-10-09 | 2015-10-09 | Air conditioner and control method thereof |
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Cited By (8)
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| CN107796093A (en) * | 2017-11-22 | 2018-03-13 | 海信（山东）空调有限公司 | A kind of air conditioner prevents the control method and air conditioner of condensation |
| CN108151245A (en) * | 2017-11-14 | 2018-06-12 | 青岛海尔空调器有限总公司 | Air-conditioning device and its control method |
| CN109386961A (en) * | 2018-09-30 | 2019-02-26 | 珠海格力电器股份有限公司 | A kind of electric heater protective device, air-conditioner set and its electric heater guard method |
| CN110849069A (en) * | 2019-11-15 | 2020-02-28 | 珠海格力电器股份有限公司 | Auxiliary heating equipment surface humidity control method, computer device and computer readable storage medium |
| CN111854036A (en) * | 2020-07-16 | 2020-10-30 | 宁波奥克斯电气股份有限公司 | Condensation elimination control method and device for air conditioner, air conditioner and storage medium |
| CN112303818A (en) * | 2020-10-23 | 2021-02-02 | 珠海格力电器股份有限公司 | Defrosting control device and method of air conditioning system and air conditioning system |
| CN113654109A (en) * | 2020-05-12 | 2021-11-16 | 青岛海尔空调器有限总公司 | Air conditioner and control method and control device thereof |
| CN114484767A (en) * | 2022-01-18 | 2022-05-13 | 北京小米移动软件有限公司 | Air conditioner control method and device, air conditioner and medium |
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| CN108151245B (en) * | 2017-11-14 | 2020-02-04 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
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| CN113654109A (en) * | 2020-05-12 | 2021-11-16 | 青岛海尔空调器有限总公司 | Air conditioner and control method and control device thereof |
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Application publication date: 20151209 |