CN104596000A - Air conditioner and control method of air conditioner - Google Patents
Air conditioner and control method of air conditioner Download PDFInfo
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- CN104596000A CN104596000A CN201410810639.6A CN201410810639A CN104596000A CN 104596000 A CN104596000 A CN 104596000A CN 201410810639 A CN201410810639 A CN 201410810639A CN 104596000 A CN104596000 A CN 104596000A
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- heat exchanger
- control valve
- temperature
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- conditioner
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
- F24F11/62—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
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F13/30—Arrangement or mounting of heat-exchangers
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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
- F24F2110/10—Temperature
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner. The air conditioner comprises an outdoor heat exchanger assembly and a temperature control device, wherein the outdoor heat exchanger assembly comprises a first heat exchanger, a second heat exchanger, a first heater and a second heater, the first heat exchanger and the first heater are connected in series to form a first branch, the second heat exchanger and the second heater are connected in series to form a second branch, and the first branch and the second branch are connected in parallel; the temperature control device is connected with the outdoor heat exchanger assembly and used for detecting the temperature of the first heat exchanger and the temperature of the second heat exchanger, controlling action of the first heater according to the temperature of the first heat exchanger and controlling action of the second heater according to the temperature of the second heat exchanger. Correspondingly, the invention further provides a control method of the air conditioner. According to the air conditioner and the control method of the air conditioner, the air conditioner can not only supply heat continuously but also defrost an outdoor unit in a heating mode.
Description
Technical field
The present invention relates to household appliance technical field, more specifically, relate to the control method of a kind of air-conditioner and a kind of air-conditioner.
Background technology
Heat pump type air conditioner is when worst cold case heats, and the easy frosting of outdoor unit heat exchanger, increases thermal resistance and windage, and heat exchange efficiency sharply declines and has a strong impact on heat transfer effect, in order to avoid heat transfer effect continuous decrease, needs to carry out defrost to system.
Existing air-conditioned main defrost pattern switches cross valve, carries out kind of refrigeration cycle.Although such defrost pattern can by the frost on outdoor heat exchanger except clean, in defrost process, out of service during indoor set, can not give room continuous heat supply, can reduce room temperature, the thermal comfort affecting user is experienced.
Therefore, propose a kind of control method need not suspending the air-conditioner of heat supply when defrost and just seem very necessary.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.
For this reason, one object of the present invention is, provides a kind of air-conditioner.
Another object of the present invention is, provides a kind of control method of air-conditioner.
For achieving the above object, embodiment provides a kind of air-conditioner according to a first aspect of the present invention, outdoor heat exchanger assembly, described outdoor heat exchanger assembly comprises First Heat Exchanger, the second heat exchanger, primary heater and secondary heater, described First Heat Exchanger and described primary heater are connected in series formation first branch road, described second heat exchanger and described secondary heater are connected in series formation second branch road, and wherein, described first branch road is connected with described second branch circuit parallel connection; Attemperating unit, be connected to described outdoor heat exchanger assembly, for the temperature of the temperature and described second heat exchanger that detect described First Heat Exchanger, and control described primary heater action according to the temperature of described First Heat Exchanger, and control described secondary heater action according to the temperature of described second heat exchanger.
Air-conditioner according to an embodiment of the invention, outdoor heat exchanger assembly comprises the first branch road and the second branch road that are connected in parallel, each branch road is provided with the heat exchanger be connected in series and heater, heater is in parallel with heat exchanger, and by attemperating unit, thermometric is carried out to the heat exchanger in the first branch road and the second branch road, and according to the temperature control heater action recorded, by this technical scheme, air-conditioning in a heating mode, can while smooth defrost, continue to indoor heating, when there is not traditional air-conditioning defrost, the situation of defrost is carried out in environment heat absorption to outdoor heat exchanger indoor, and also can not reduce room temperature, fluctuations in indoor temperature is little, avoid the damage of compressor repeatedly starting and stopping to compressor, extend the service life of compressible machine, and then the life-span of the complete machine extended, avoiding cross valve commutates to the wearing and tearing of cross valve repeatedly, extend the service life of cross valve, improve the performance of air-conditioner.
In addition, the air-conditioner provided according to the above embodiment of the present invention also has following additional technical feature:
According to one embodiment of present invention, described outdoor heat exchanger assembly also comprises the first control valve and the second control valve, described first control valve is positioned on described first branch road, described first control valve, described primary heater and described First Heat Exchanger are sequentially connected in series, and described second control valve is positioned on described second branch road, described second control valve, described secondary heater and described second heat exchanger are sequentially connected in series.
Air-conditioner according to an embodiment of the invention, first branch road and the second branch road are respectively arranged with the first control valve and the second control valve, first control valve, primary heater, First Heat Exchanger is sequentially connected in series on the first leg, second control valve, secondary heater, second heat exchanger connects successively on the second branch road, and the first branch road is connected with the second branch circuit parallel connection, by this technical scheme, design two branch roads, each branch road is provided with heater, heat exchanger and control valve, can when carrying out defrost process, ensure that a branch road carries out defrost, another branch road proceeds to heat.
According to one embodiment of present invention, also comprise: cross valve, described cross valve comprises the first port, the second port, the 3rd port and the 4th port, compressor, described compressor comprises gas returning port and exhaust outlet, described gas returning port is connected with described first port, and described exhaust outlet is connected with described second port; Indoor heat exchanger, one end of described indoor heat exchanger is connected with described 3rd port, and the other end of described indoor heat exchanger is connected with the first end of throttling arrangement; Described throttling arrangement, the second end of described throttling arrangement is connected with one end of described outdoor heat exchanger assembly, and the other end of described outdoor heat exchanger assembly is connected with the 4th port of described cross valve.
Air-conditioner according to an embodiment of the invention, connects the refrigerant circulation circuit of compressor, cross valve, indoor heat exchanger, throttling arrangement, the formation of outdoor heat exchanger assembly by pipeline, make air-conditioner can carry out heating, freezing or other operations.
According to one embodiment of present invention, described first control valve and described second control valve are connected with described 4th port of described cross valve, and described First Heat Exchanger and described second heat exchanger are connected with described second end of described throttling arrangement.
Air-conditioner according to an embodiment of the invention, first control valve and the second control valve are connected with the 4th port of cross valve, First Heat Exchanger and the second heat exchanger are connected with the second end of throttling arrangement, in cooling mode, the refrigerant flow direction in systems in which: exhaust outlet of compressor → cross valve → the first control valve and the second control valve → primary heater and secondary heater → First Heat Exchanger and the second heat exchanger → throttling arrangement → indoor heat exchanger → compressor return air mouth, in a heating mode, the refrigerant flow direction in systems in which: exhaust outlet of compressor → cross valve → indoor heat exchanger → throttling arrangement → First Heat Exchanger and the second heat exchanger → primary heater and secondary heater → the first control valve and the second control valve → compressor return air mouth.
According to one embodiment of present invention, described first control valve and described second control valve are connected with described second end of described throttling arrangement, and described First Heat Exchanger and described second heat exchanger are connected with described 4th port of described cross valve.
Air-conditioner according to an embodiment of the invention, first control valve and the second control valve are connected with the second port of throttling arrangement, First Heat Exchanger and the second heat exchanger are connected with the 4th port of cross valve, in cooling mode, the refrigerant flow direction in systems in which: exhaust outlet of compressor → cross valve → First Heat Exchanger and the second heat exchanger → primary heater and secondary heater → the first control valve and the second control valve → throttling arrangement → indoor heat exchanger → compressor return air mouth, in a heating mode, the refrigerant flow direction in systems in which: exhaust outlet of compressor → cross valve → indoor heat exchanger → throttling arrangement → the first control valve and the second control valve → primary heater and secondary heater → First Heat Exchanger and the second heat exchanger → compressor return air mouth.
According to one embodiment of present invention, described attemperating unit comprises: the first temperature measuring equipment and the second temperature measuring equipment, described first temperature measuring equipment is arranged on the coil pipe of described First Heat Exchanger, for detecting the temperature of described First Heat Exchanger, and described second temperature measuring equipment is arranged on the coil pipe of described second heat exchanger, for detecting the temperature of described First Heat Exchanger.
According to air-conditioner provided by the invention, first temperature measuring equipment and the second temperature measuring equipment can monitor the temperature of First Heat Exchanger and the temperature of the second heat exchanger in time, whether the temperature detected on First Heat Exchanger and the second heat exchanger reaches the temperature wanting frosting exactly, determine whether the defrost action of air-conditioner is carried out with this, improve the sensitivity of air-conditioner, the moment ensures that air-conditioner is in higher heat exchange efficiency.
According to one embodiment of present invention, described attemperating unit also comprises: controller, described controller is connected to described first temperature measuring equipment and described second temperature measuring equipment, for receiving the temperature that described first temperature measuring equipment detects and the temperature receiving described second temperature measuring equipment detection, and control described primary heater, described first control valve action, described secondary heater and described second control valve action according to the temperature that temperature and described second temperature measuring equipment of described first temperature measuring equipment detection detect.
According to one embodiment of present invention, described controller, when described air-conditioner is in other patterns except heating mode, cuts out for controlling described primary heater and described secondary heater, and described first control valve and described second control valve are opened completely.
Air-conditioner according to an embodiment of the invention, when air-conditioner is in refrigeration mode, first control valve and the second control valve are opened completely, primary heater and secondary heater are closed, the refrigerant flow direction in systems in which: exhaust outlet of compressor → cross valve → the first control valve and the second control valve → primary heater and secondary heater → First Heat Exchanger and the second heat exchanger → throttling arrangement → indoor heat exchanger → compressor return air mouth.Controller, according to the selective work of air-conditioner working condition, saves the power consumption of air-conditioner, also effectively reduces the fault rate of controller, and then improves reliability and the cost performance of air-conditioner.
According to one embodiment of present invention, described controller is when described air-conditioner is in heating mode, and when the temperature that the temperature that described first temperature measuring equipment detects and described second temperature measuring equipment detect all is more than or equal to described preset temperature, close for controlling described primary heater and described secondary heater, and described first control valve and described second control valve are opened completely.
Air-conditioner according to an embodiment of the invention, when air-conditioner heats, and the temperature detected at temperature and described second temperature measuring equipment of described first temperature measuring equipment detection is all more than or equal to described preset temperature, that is, when all there is not frosting in the First Heat Exchanger of the outdoor heat exchanger assembly of air-conditioner and the second heat exchanger, first control valve and the second control valve are opened completely, primary heater and secondary heater are closed, the refrigerant flow direction in systems in which: exhaust outlet of compressor → cross valve → indoor heat exchanger → throttling arrangement → First Heat Exchanger and the second heat exchanger → primary heater and secondary heater → the first control valve and the second control valve → compressor return air mouth.
According to one embodiment of present invention, described controller is when described air-conditioner is in heating mode, and when the temperature of described first temperature measuring equipment detection is less than described preset temperature, opens for controlling described primary heater, described first control valve is not exclusively opened, described secondary heater is closed and described second control valve is opened completely.
Air-conditioner according to an embodiment of the invention, when air-conditioner heats, and when the temperature that described first temperature measuring equipment detects is less than described preset temperature, that is, when temperature on the First Heat Exchanger of the first branch road is less than the preset temperature of air-conditioner, first branch road frosting, opened by control primary heater and refrigerant is heated, first control valve not exclusively opens control cold medium flux, carry out defrost process, and the secondary heater on the second branch road is closed and the second control valve is opened completely, proceed to heat, the fluctuation of indoor temperature can be reduced like this, defrost process can be carried out again under the condition not affecting heating operation, ensure that the thermal comfort of user is experienced, and the refrigerant flow direction in systems in which: exhaust outlet of compressor → cross valve → indoor heat exchanger → throttling arrangement → First Heat Exchanger and the second heat exchanger → primary heater and secondary heater → the first control valve and the second control valve → compressor return air mouth.
According to one embodiment of present invention, described controller is when described air-conditioner is in heating mode, and when the temperature of described second temperature measuring equipment detection is less than described preset temperature, opens for controlling described secondary heater, described second control valve is not exclusively opened, described primary heater is closed and described first control valve is opened completely.
Air-conditioner according to an embodiment of the invention, when air-conditioner heats, and when the temperature that described second temperature measuring equipment detects is less than described preset temperature, that is, when temperature on the second heat exchanger of the second branch road is less than the preset temperature of air-conditioner, second branch road frosting, opened by control secondary heater and refrigerant is heated, second control valve not exclusively opens control cold medium flux, carry out defrost process, and the primary heater on the first branch road is closed and the first control valve is opened completely, proceed to heat, the fluctuation of indoor temperature can be reduced like this, defrost process can be carried out again under the condition not affecting heating operation, ensure that the thermal comfort of user is experienced, and refrigerant flow to the refrigerant flow direction in systems in which: exhaust outlet of compressor → cross valve → indoor heat exchanger → throttling arrangement → First Heat Exchanger and the second heat exchanger → primary heater and secondary heater → the first control valve and the second control valve → compressor return air mouth.
According to one embodiment of present invention, described controller is when described air-conditioner is in heating mode, and when the described temperature of the first temperature measuring equipment detection and the temperature of described second temperature measuring equipment are all less than described preset temperature, open for controlling described primary heater, described first control valve not exclusively opened, described secondary heater is closed and described second control valve is opened completely, or control that described secondary heater is opened, described second control valve is not exclusively opened, described primary heater is closed and described first control valve is opened completely.
Air-conditioner according to an embodiment of the invention, when air-conditioner heats, when the temperature of the temperature that the first temperature measuring equipment detects and the second temperature measuring equipment is all less than preset temperature, that is, when the temperature on the First Heat Exchanger of the first branch road and the second heat exchanger of the second branch road is all less than the preset temperature of air-conditioner, first branch road and the second branch road carry out frosting, first, first judgement is that the heat exchanger on which branch road first reaches frosting condition, when the First Heat Exchanger on the first branch road first reaches frosting condition, opened by control primary heater and refrigerant is heated, first control valve not exclusively opens control cold medium flux, carry out defrost process, and the secondary heater on the second branch road is closed and the second control valve is opened completely, proceed to heat, when the temperature of First Heat Exchanger is greater than preset temperature, first branch road stops defrost carrying out heating and to be closed by primary heater and the first control valve is opened completely, and the second branch road starts defrost, secondary heater is opened refrigerant is heated, second control valve not exclusively opens control cold medium flux, two branch roads replace heater, refrigerant is heated, reach a branch road to heat, a branch road carries out defrost, the fluctuation of indoor temperature can be reduced like this, defrost process can be carried out again under the condition not affecting heating operation, ensure that the thermal comfort of user is experienced, and improve the service life of air-conditioner, and the refrigerant flow direction in systems in which: exhaust outlet of compressor → cross valve → indoor heat exchanger → throttling arrangement → First Heat Exchanger and the second heat exchanger → primary heater and secondary heater → the first control valve and the second control valve → compressor return air mouth.
The control method of a kind of air-conditioner of embodiment according to a second aspect of the invention, after the described air-conditioner of startup, judges whether to be in heating mode, when described judged result is no, described primary heater and described secondary heater is closed, and described first control valve and described second control valve are opened completely, when judged result is for being, judge whether the temperature of the temperature of the First Heat Exchanger of described outdoor heat exchanger assembly and the second heat exchanger of described outdoor heat exchanger assembly is all more than or equal to preset temperature, when the temperature of described First Heat Exchanger and the temperature of described second heat exchanger are all more than or equal to described preset temperature, the secondary heater of the primary heater of described outdoor heat exchanger assembly and described outdoor heat exchanger assembly is closed, and the second control valve of the first control valve of described outdoor heat exchanger assembly and described outdoor heat exchanger assembly is opened completely, otherwise, described primary heater is opened, described first control valve is not exclusively opened, described secondary heater is closed and described second control valve is opened completely, or described secondary heater is opened, described second control valve is not exclusively opened, described primary heater is closed and described first control valve is opened completely, until the temperature of the temperature of described First Heat Exchanger and described second heat exchanger is all more than or equal to described preset temperature.
The control method of air-conditioner according to an embodiment of the invention, after the controller starting air-conditioning, first controller judges whether air-conditioning is in heating mode; If air-conditioner is in heating mode, controller starts the temperature detecting First Heat Exchanger and the second heat exchanger, then detected temperatures and predetermined temperature are contrasted, according to the contrast of detected temperatures and preset temperature, determine the duty of the first control valve, the second control valve, primary heater, secondary heater.If air-conditioner is not in heating mode, controller makes primary heater and secondary heater cut out, and the first control valve and the second control valve are opened completely, now two normal heating operations of branch road of air-conditioning.Wherein, when air-conditioner is in heating mode, when the First Heat Exchanger of controller detection and the temperature of the second heat exchanger are all greater than preset temperature, controller makes primary heater and secondary heater cut out, and the first control valve and the second control valve are opened completely, now two normal heating operations of branch road of air-conditioning.When temperature on the First Heat Exchanger of the first branch road is less than the preset temperature of air-conditioner, first branch road frosting, by control primary heater open refrigerant is heated, the first control valve not exclusively opens control cold medium flux, carry out defrost process, and the secondary heater on the second branch road is closed and the second control valve is opened completely, proceed to heat.When the temperature that the second temperature measuring equipment detects is less than preset temperature, that is, when temperature on the second heat exchanger of the second branch road is less than the preset temperature of air-conditioner, second branch road frosting, by control secondary heater open refrigerant is heated, the second control valve not exclusively opens control cold medium flux, carry out defrost process, and the primary heater on the first branch road is closed and the first control valve is opened completely, proceeds to heat.When controller starts the temperature detecting First Heat Exchanger and the second heat exchanger, when being all less than preset temperature, a normally job is had in first branch road and the second branch road, another carries out heating defrost, after a branch road defrost, when detected temperatures is greater than preset temperature, this branch road normally works by controller, heating defrost is carried out to another branch road, until the detected temperatures of two branch roads is all more than or equal to preset temperature.Now air-conditioning has at least a branch road normally to run all the time, does not affect normally heating of air-conditioner, and then does not affect the comfort level of user and experience the application of air-conditioner.
Provide in description part below according to additional aspect of the present invention and advantage, part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the connection diagram of air-conditioner when freezing described according to one embodiment of present invention;
Fig. 2 is First Heat Exchanger and the connection diagram of the second heat exchanger all when heating of air-conditioner described according to one embodiment of present invention;
Fig. 3 is the defrost route schematic diagram of the First Heat Exchanger of air-conditioner described according to one embodiment of present invention;
Fig. 4 is the defrost route schematic diagram of the second heat exchanger of air-conditioner described according to one embodiment of present invention;
Fig. 5 is the schematic diagram of the connected mode of air-conditioner described according to another embodiment of the invention;
Fig. 6 is the schematic flow sheet of the control method of air-conditioner described according to one embodiment of present invention;
Fig. 7 is the schematic flow sheet of the control method of air-conditioner described according to another embodiment of the invention.
Detailed description of the invention
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from mode described here to implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
As shown in Figures 1 to 5, embodiment provides a kind of air-conditioner according to a first aspect of the present invention, outdoor heat exchanger assembly, described outdoor heat exchanger assembly comprises First Heat Exchanger 401, second heat exchanger 402, primary heater 501 and secondary heater 502, described First Heat Exchanger 401 is connected in series formation first branch road with described primary heater 501, described second heat exchanger 402 and described secondary heater 502 are connected in series formation second branch road, wherein, described first branch road is connected with described second branch circuit parallel connection; Attemperating unit, be connected to described outdoor heat exchanger assembly, for the temperature of the temperature and described second heat exchanger 402 that detect described First Heat Exchanger 401, and control the action of described primary heater 501 according to the temperature of described First Heat Exchanger 401, and control the action of described secondary heater 502 according to the temperature of described second heat exchanger 402.
Air-conditioner according to an embodiment of the invention, outdoor heat exchanger assembly comprises the first branch road and the second branch road that are connected in parallel, each branch road is provided with the heat exchanger be connected in series and heater, heater is in parallel with heat exchanger, and by attemperating unit, thermometric is carried out to the heat exchanger in the first branch road and the second branch road, and according to the temperature control heater action recorded, by this technical scheme, air-conditioning in a heating mode, can while smooth defrost, continue to indoor heating, when there is not traditional air-conditioning defrost, the situation of defrost is carried out in environment heat absorption to outdoor heat exchanger indoor, and also can not reduce room temperature, fluctuations in indoor temperature is little, avoid the damage of compressor repeatedly starting and stopping to compressor, extend the service life of compressible machine, and then the life-span of the complete machine extended, avoiding cross valve commutates to the wearing and tearing of cross valve repeatedly, extend the service life of cross valve, improve the performance of air-conditioner.
In addition, the air-conditioner provided according to the above embodiment of the present invention also has following additional technical feature:
As shown in Figures 1 to 5, according to one embodiment of present invention, described outdoor heat exchanger assembly also comprises the first control valve 601 and the second control valve 602, described first control valve 601 is positioned on described first branch road, described first control valve 601, described primary heater 501 and described First Heat Exchanger 401 are sequentially connected in series, and described second control valve 602 is positioned on described second branch road, described second control valve 602, described secondary heater 502 and described second heat exchanger 402 are sequentially connected in series.
Air-conditioner according to an embodiment of the invention, first branch road and the second branch road are respectively arranged with the first control valve 601 and the second control valve 602, first control valve 601, primary heater 501, First Heat Exchanger 401 is sequentially connected in series on the first leg, second control valve 602, secondary heater 502, second heat exchanger 402 connects successively on the second branch road, and the first branch road is connected with the second branch circuit parallel connection, by this technical scheme, design two branch roads, each branch road is provided with heater, heat exchanger and control valve, can when carrying out defrost process, ensure that a branch road carries out defrost, another branch road proceeds to heat.
According to one embodiment of present invention, as shown in Figures 1 to 5, also comprise: cross valve 1, described cross valve 1 comprises the first port, the second port, the 3rd port and the 4th port, compressor 7, described compressor 7 comprises gas returning port and exhaust outlet, and described gas returning port is connected with described first port, and described exhaust outlet is connected with described second port; Indoor heat exchanger 2, one end of described indoor heat exchanger 2 is connected with described 3rd port, and the other end of described indoor heat exchanger 2 is connected with the first end of throttling arrangement 3; Described throttling arrangement 3, the second end of described throttling arrangement 3 is connected with one end of described outdoor heat exchanger assembly, and the other end of described outdoor heat exchanger assembly is connected with the 4th port of described cross valve 1.
Air-conditioner according to an embodiment of the invention, connects the refrigerant circulation circuit of compressor 7, cross valve 1, indoor heat exchanger 2, throttling arrangement 3, the formation of outdoor heat exchanger assembly by pipeline, make air-conditioner can carry out heating, freezing or other operations.
According to one embodiment of present invention, as shown in Figures 1 to 5, described first control valve 601 and described second control valve 602 are connected with described 4th port of described cross valve 1, and described First Heat Exchanger 401 and described second heat exchanger 402 are connected with described second end of described throttling arrangement 3.
Air-conditioner according to an embodiment of the invention, as shown in Figures 1 to 5, thick-line arrow representative heats, and thin-line arrow represents defrost.First control valve 601 and the second control valve 602 are connected with the 4th port of cross valve 1, First Heat Exchanger 401 and the second heat exchanger 402 are connected with the second end of throttling arrangement 3, in cooling mode, the refrigerant flow direction in systems in which: compressor 7 exhaust outlets → cross valve 1 → the first control valve 601 and second control valve 602 → primary heater 501 and secondary heater 502 → First Heat Exchanger 401 and second heat exchanger 402 → throttling arrangement 3 → indoor heat exchanger 2 → compressor 7 gas returning port, in a heating mode, the refrigerant flow direction in systems in which: compressor 7 exhaust outlets → cross valve 1 → indoor heat exchanger 2 → throttling arrangement 3 → First Heat Exchanger 401 and second heat exchanger 402 → primary heater 501 and secondary heater 502 → the first control valve 601 and second control valve 602 → compressor 7 gas returning port.
According to one embodiment of present invention, as shown in Figure 5, described first control valve 601 and described second control valve 602 are connected with described second end of described throttling arrangement 3, and described First Heat Exchanger 401 and described second heat exchanger 402 are connected with described 4th port of described cross valve 1.
Air-conditioner according to an embodiment of the invention, first control valve 601 and the second control valve 602 are connected with the second port of throttling arrangement 3, First Heat Exchanger 401 and the second heat exchanger 402 are connected with the 4th port of cross valve 1, in cooling mode, the refrigerant flow direction in systems in which: compressor 7 exhaust outlets → cross valve 1 → First Heat Exchanger 401 and second heat exchanger 402 → primary heater 501 and secondary heater 502 → the first control valve 601 and second control valve 602 → throttling arrangement 3 → indoor heat exchanger 2 → compressor 7 gas returning port, in a heating mode, the refrigerant flow direction in systems in which: compressor 7 exhaust outlets → cross valve 1 → indoor heat exchanger 2 → throttling arrangement 3 → the first control valve 601 and second control valve 602 → primary heater 501 and secondary heater 502 → First Heat Exchanger 401 and second heat exchanger 402 → compressor 7 gas returning port.
According to one embodiment of present invention, described attemperating unit comprises: the first temperature measuring equipment and the second temperature measuring equipment, described first temperature measuring equipment is arranged on the coil pipe of described First Heat Exchanger 401, for detecting the temperature of described First Heat Exchanger 401, and described second temperature measuring equipment is arranged on the coil pipe of described second heat exchanger 402, for detecting the temperature of described First Heat Exchanger 401.
According to air-conditioner provided by the invention, first temperature measuring equipment and the second temperature measuring equipment can monitor the temperature of First Heat Exchanger 401 and the temperature of the second heat exchanger 402 in time, whether the temperature detected on First Heat Exchanger 401 and the second heat exchanger 402 reaches the temperature wanting frosting exactly, determine whether the defrost action of air-conditioner is carried out with this, improve the sensitivity of air-conditioner, the moment ensures that air-conditioner is in higher heat exchange efficiency.
According to one embodiment of present invention, described attemperating unit also comprises: controller, described controller is connected to described first temperature measuring equipment and described second temperature measuring equipment, for receiving the temperature that described first temperature measuring equipment detects and the temperature receiving described second temperature measuring equipment detection, and control described primary heater 501, described first control valve 601 action, described secondary heater 502 and described second control valve 602 action according to the temperature that temperature and described second temperature measuring equipment of described first temperature measuring equipment detection detect.
According to one embodiment of present invention, as shown in Figure 1, described controller is when described air-conditioner is in other patterns except heating mode, and for controlling described primary heater 501 and described secondary heater 502 is closed, and described first control valve 601 and described second control valve 602 are opened.
Air-conditioner according to an embodiment of the invention, when air-conditioner is in refrigeration mode, first control valve 601 and the second control valve 602 are opened completely, primary heater 501 and secondary heater 502 are closed, the refrigerant flow direction in systems in which: compressor 7 exhaust outlets → cross valve 1 → the first control valve 601 and second control valve 602 → primary heater 501 and secondary heater 502 → First Heat Exchanger 401 and second heat exchanger 402 → throttling arrangement 3 → indoor heat exchanger 2 → compressor 7 gas returning port.Controller, according to the selective work of air-conditioner working condition, saves the power consumption of air-conditioner, also effectively reduces the fault rate of controller, and then improves reliability and the cost performance of air-conditioner.
According to one embodiment of present invention, as shown in Figure 2, described controller is when described air-conditioner is in heating mode, and when the temperature that the temperature that described first temperature measuring equipment detects and described second temperature measuring equipment detect all is more than or equal to described preset temperature, for controlling described primary heater 501 and described secondary heater 502 is closed, and described first control valve 601 is opened completely with described second control valve 602.
Air-conditioner according to an embodiment of the invention, when air-conditioner heats, and the temperature detected at temperature and described second temperature measuring equipment of described first temperature measuring equipment detection is all more than or equal to described preset temperature, that is, when all there is not frosting in the First Heat Exchanger 401 of the outdoor heat exchanger assembly of air-conditioner and the second heat exchanger 402, first control valve 601 and the second control valve 602 are opened completely, primary heater 501 and secondary heater 502 are closed, the refrigerant flow direction in systems in which: compressor 7 exhaust outlets → cross valve 1 → indoor heat exchanger 2 → throttling arrangement 3 → First Heat Exchanger 401 and second heat exchanger 402 → primary heater 501 and secondary heater 502 → the first control valve 601 and second control valve 602 → compressor 7 gas returning port.
According to one embodiment of present invention, as shown in Figure 3, described controller is when described air-conditioner is in heating mode, and when the temperature that described first temperature measuring equipment detects is less than described preset temperature, opens for controlling described primary heater 501, described first control valve 601 is not exclusively opened, described secondary heater 502 is closed and described second control valve 602 is opened completely.
Air-conditioner according to an embodiment of the invention, when air-conditioner heats, and when the temperature that described first temperature measuring equipment detects is less than described preset temperature, that is, when temperature on the First Heat Exchanger 401 of the first branch road is less than the preset temperature of air-conditioner, first branch road frosting, opened by control primary heater 501 and refrigerant is heated, first control valve 601 not exclusively opens control cold medium flux, carry out defrost process, and the secondary heater 502 on the second branch road is closed and the second control valve 602 is opened completely, proceed to heat, the fluctuation of indoor temperature can be reduced like this, defrost process can be carried out again under the condition not affecting heating operation, ensure that the thermal comfort of user is experienced, and the refrigerant flow direction in systems in which: compressor 7 exhaust outlets → cross valve 1 → indoor heat exchanger 2 → throttling arrangement 3 → First Heat Exchanger 401 and second heat exchanger 402 → primary heater 501 and secondary heater 502 → the first control valve 601 and second control valve 602 → compressor 7 gas returning port.
According to one embodiment of present invention, as shown in Figure 4, described controller is when described air-conditioner is in heating mode, and when the temperature that described second temperature measuring equipment detects is less than described preset temperature, opens for controlling described secondary heater 502, described second control valve 602 is not exclusively opened, described primary heater 501 is closed and described first control valve 601 is opened completely.
Air-conditioner according to an embodiment of the invention, when air-conditioner heats, and when the temperature that described second temperature measuring equipment detects is less than described preset temperature, that is, when temperature on the second heat exchanger 402 of the second branch road is less than the preset temperature of air-conditioner, second branch road frosting, opened by control secondary heater 502 and refrigerant is heated, second control valve 602 not exclusively opens control cold medium flux, carry out defrost process, and the primary heater 501 on the first branch road is closed and the first control valve 601 is opened completely, proceed to heat, the fluctuation of indoor temperature can be reduced like this, defrost process can be carried out again under the condition not affecting heating operation, ensure that the thermal comfort of user is experienced, and refrigerant flow to the refrigerant flow direction in systems in which: compressor 7 exhaust outlets → cross valve 1 → indoor heat exchanger 2 → throttling arrangement 3 → First Heat Exchanger 401 and second heat exchanger 402 → primary heater 501 and secondary heater 502 → the first control valve 601 and second control valve 602 → compressor 7 gas returning port.
According to one embodiment of present invention, as shown in Figure 4 and Figure 5, described controller is when described air-conditioner is in heating mode, and when the described temperature of the first temperature measuring equipment detection and the temperature of described second temperature measuring equipment are all less than described preset temperature, open for controlling described primary heater 501, described first control valve 601 is not exclusively opened, described secondary heater 502 is closed and described second control valve 602 is opened completely, or control described secondary heater 502 and open, described second control valve 602 is not exclusively opened, described primary heater 501 is closed and described first control valve 601 is opened completely.
Air-conditioner according to an embodiment of the invention, when air-conditioner heats, when the temperature of the temperature that the first temperature measuring equipment detects and the second temperature measuring equipment is all less than preset temperature, that is, when the temperature on the First Heat Exchanger 401 of the first branch road and the second heat exchanger 402 of the second branch road is all less than the preset temperature of air-conditioner, first branch road and the second branch road carry out frosting, first, first judgement is that the heat exchanger on which branch road first reaches frosting condition, when the First Heat Exchanger 401 on the first branch road first reaches frosting condition, opened by control primary heater 501 and refrigerant is heated, first control valve 601 not exclusively opens control cold medium flux, carry out defrost process, and the secondary heater 502 on the second branch road is closed and the second control valve 602 is opened completely, proceed to heat, when the temperature of First Heat Exchanger 401 is greater than preset temperature, first branch road stops defrost carrying out heating and to be closed by primary heater 501 and the first control valve 601 is opened completely, and the second branch road starts defrost, secondary heater 502 is opened refrigerant is heated, second control valve 602 not exclusively opens control cold medium flux, two branch roads replace heater, refrigerant is heated, reach a branch road to heat, a branch road carries out defrost, the fluctuation of indoor temperature can be reduced like this, defrost process can be carried out again under the condition not affecting heating operation, ensure that the thermal comfort of user is experienced, and improve the service life of air-conditioner, and the refrigerant flow direction in systems in which: compressor 7 exhaust outlets → cross valve 1 → indoor heat exchanger 2 → throttling arrangement 3 → First Heat Exchanger 401 and second heat exchanger 402 → primary heater 501 and secondary heater 502 → the first control valve 601 and second control valve 602 → compressor 7 gas returning port.
As shown in Figure 7, the control method of a kind of air-conditioner of embodiment according to a second aspect of the invention, for the air-conditioner described in above-mentioned any one, the control method of described air-conditioner comprises: step 702, after the described air-conditioner of startup, judge whether to be in heating mode, step 704, when described judged result is no, makes described primary heater 501 and described secondary heater 502 close, and described first control valve 601 is opened completely with described second control valve 602, when judged result is for being, step 706, judges whether the temperature of the temperature of the First Heat Exchanger 401 of described outdoor heat exchanger assembly and the second heat exchanger 402 of described outdoor heat exchanger assembly is all more than or equal to preset temperature, when the temperature of described First Heat Exchanger 401 and the temperature of described second heat exchanger 402 are all more than or equal to described preset temperature, step 704, the secondary heater 502 of the primary heater 501 of described outdoor heat exchanger assembly and described outdoor heat exchanger assembly is closed, and the first control valve 601 of described outdoor heat exchanger assembly is opened completely with the second control valve 602 of described outdoor heat exchanger assembly, otherwise, step 708, described primary heater 501 is opened, described first control valve 601 is not exclusively opened, described secondary heater 502 is closed and described second control valve 602 is opened completely, or described secondary heater 502 is opened, described second control valve 602 is not exclusively opened, described primary heater 501 is closed and described first control valve 601 is opened completely, until the temperature of the temperature of described First Heat Exchanger 401 and described second heat exchanger 402 is all more than or equal to described preset temperature.
The control method of air-conditioner according to an embodiment of the invention, as shown in Figures 1 to 7, after the controller starting air-conditioning, first controller judges whether air-conditioning is in heating mode; If air-conditioner is in heating mode, controller starts the temperature detecting First Heat Exchanger 401 and the second heat exchanger 402, then detected temperatures and predetermined temperature are contrasted, according to the contrast of detected temperatures and preset temperature, determine the duty of the first control valve 601, second control valve 602, primary heater 501, secondary heater 502.If air-conditioner is not in heating mode, controller makes primary heater 501 and secondary heater 502 cut out, and the first control valve 601 and the second control valve 602 are opened completely, now two normal heating operations of branch road of air-conditioning.Wherein, when air-conditioner is in heating mode, when the First Heat Exchanger 401 of controller detection and the temperature of the second heat exchanger 402 are all greater than preset temperature, controller makes primary heater 501 and secondary heater 502 cut out, and the first control valve 601 and the second control valve 602 are opened completely, now two normal heating operations of branch road of air-conditioning.When temperature on the First Heat Exchanger 401 of the first branch road is less than the preset temperature of air-conditioner, first branch road frosting, by control primary heater 501 open refrigerant is heated, the first control valve 601 not exclusively opens control cold medium flux, carry out defrost process, and the secondary heater 502 on the second branch road is closed and the second control valve 602 is opened completely, proceed to heat.When the temperature that the second temperature measuring equipment detects is less than preset temperature, that is, when temperature on the second heat exchanger 402 of the second branch road is less than the preset temperature of air-conditioner, second branch road frosting, by control secondary heater 502 open refrigerant is heated, the second control valve 602 not exclusively opens control cold medium flux, carry out defrost process, and the primary heater 501 on the first branch road is closed and the first control valve 601 is opened completely, proceed to heat.When controller starts the temperature detecting First Heat Exchanger 401 and the second heat exchanger 402, when being all less than preset temperature, a normally job is had in first branch road and the second branch road, another carries out heating defrost, after a branch road defrost, when detected temperatures is greater than preset temperature, this branch road normally works by controller, heating defrost is carried out to another branch road, until the detected temperatures of two branch roads is all more than or equal to preset temperature.Now air-conditioning has at least a branch road normally to run all the time, does not affect normally heating of air-conditioner, and then does not affect the comfort level of user and experience the application of air-conditioner.
As shown in Figure 6, after system boot, judge whether it is heating operation, if not, two control valves are opened completely, and two heaters cut out.Otherwise judge whether outdoor heat exchanger coil temperature T >=t sets up, if set up, two control valves are opened completely, two refrigerant heater are closed, otherwise primary heater one is closed, and the first control valve is opened completely; Secondary heater is opened, second control valve opens certain aperture, until coil temperature T >=t, secondary heater stops heating, control valve is opened completely, check whether another outdoor heat exchanger branch road coil temperature T >=t sets up simultaneously, in like manner determine that this branch road primary heater is opened and whether the first control valve is opened completely, so circulate, two branch roads replace heater, reach a branch road to heat, after the object system boot of another branch road defrost, judge whether it is heating operation, if not, two control valves are opened completely, and two refrigerant heater are closed.Otherwise judge whether outdoor heat exchanger coil temperature T >=t sets up, if set up, two control valves are opened completely, and primary heater is closed, otherwise primary heater is closed, and the first control valve is opened completely; Secondary heater is opened, second control valve opens certain aperture, until coil temperature T >=t, secondary heater stops heating, and the second control valve is opened completely, check whether another outdoor heat exchanger branch road coil temperature T >=t sets up simultaneously, in like manner determine that this branch road primary heater is opened and whether the first control valve is opened completely, so circulate, two branch roads alternately open refrigerant heater, reach a branch road to heat, the object of another branch road defrost.
In the description of this description, term " connection " etc. all should be interpreted broadly, and such as, " connection " can be fixedly connected with, and also can be removably connect, or connects integratedly; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this description, specific features, structure, material or feature that the description of term " embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, 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 amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. an air-conditioner, is characterized in that, comprising:
Outdoor heat exchanger assembly, described outdoor heat exchanger assembly comprises First Heat Exchanger, the second heat exchanger, primary heater and secondary heater, described First Heat Exchanger and described primary heater are connected in series formation first branch road, described second heat exchanger and described secondary heater are connected in series formation second branch road, wherein, described first branch road is connected with described second branch circuit parallel connection;
Attemperating unit, be connected to described outdoor heat exchanger assembly, for the temperature of the temperature and described second heat exchanger that detect described First Heat Exchanger, and control described primary heater action according to the temperature of described First Heat Exchanger, and control described secondary heater action according to the temperature of described second heat exchanger.
2. according to the air-conditioner described in claim 1, it is characterized in that, described outdoor heat exchanger assembly also comprises the first control valve and the second control valve, described first control valve is positioned on described first branch road, described first control valve, described primary heater and described First Heat Exchanger are sequentially connected in series, and
Described second control valve is positioned on described second branch road, and described second control valve, described secondary heater and described second heat exchanger are sequentially connected in series.
3. according to the air-conditioner described in claim 2, it is characterized in that, also comprise:
Cross valve, described cross valve comprises the first port, the second port, the 3rd port and the 4th port,
Compressor, described compressor comprises gas returning port and exhaust outlet, and described gas returning port is connected with described first port, and described exhaust outlet is connected with described second port;
Indoor heat exchanger, one end of described indoor heat exchanger is connected with described 3rd port, and the other end of described indoor heat exchanger is connected with the first end of throttling arrangement;
Described throttling arrangement, the second end of described throttling arrangement is connected with one end of described outdoor heat exchanger assembly, and the other end of described outdoor heat exchanger assembly is connected with the 4th port of described cross valve.
4. according to the air-conditioner described in claim 3, it is characterized in that, described first control valve and described second control valve are connected with described 4th port of described cross valve, and described First Heat Exchanger and described second heat exchanger are connected with described second end of described throttling arrangement.
5. according to the air-conditioner described in claim 3, it is characterized in that, described first control valve and described second control valve are connected with described second end of described throttling arrangement, and described First Heat Exchanger and described second heat exchanger are connected with described 4th port of described cross valve.
6. according to the air-conditioner described in claim 2, it is characterized in that, described attemperating unit comprises: the first temperature measuring equipment and the second temperature measuring equipment, described first temperature measuring equipment is arranged on the coil pipe of described First Heat Exchanger, for detecting the temperature of described First Heat Exchanger, and described second temperature measuring equipment is arranged on the coil pipe of described second heat exchanger, for detecting the temperature of described First Heat Exchanger.
7. according to the air-conditioner described in claim 6, it is characterized in that, described attemperating unit also comprises: controller, described controller is connected to described first temperature measuring equipment and described second temperature measuring equipment, for receiving the temperature that described first temperature measuring equipment detects and the temperature receiving described second temperature measuring equipment detection, and control described primary heater, described first control valve, described secondary heater and described second control valve action according to the temperature that temperature and described second temperature measuring equipment of described first temperature measuring equipment detection detect.
8. according to the air-conditioner described in claim 7, it is characterized in that, described controller, when described air-conditioner is in other patterns except heating mode, cuts out for controlling described primary heater and described secondary heater, and described first control valve and described second control valve are opened completely.
9. according to the air-conditioner described in claim 7, it is characterized in that, described controller is when described air-conditioner is in heating mode, and when the temperature that the temperature that described first temperature measuring equipment detects and described second temperature measuring equipment detect all is more than or equal to described preset temperature, close for controlling described primary heater and described secondary heater, and described first control valve and described second control valve are opened completely.
10. according to the air-conditioner described in claim 7, it is characterized in that, described controller is when described air-conditioner is in heating mode, and when the temperature of described first temperature measuring equipment detection is less than described preset temperature, opens for controlling described primary heater, described first control valve is not exclusively opened, described secondary heater is closed and described second control valve is opened completely.
11. according to the air-conditioner described in claim 7, it is characterized in that, described controller is when described air-conditioner is in heating mode, and when the temperature of described second temperature measuring equipment detection is less than described preset temperature, opens for controlling described secondary heater, described second control valve is not exclusively opened, described primary heater is closed and described first control valve is opened completely.
12. according to the air-conditioner described in claim 7, it is characterized in that, described controller is when described air-conditioner is in heating mode, and when the described temperature of the first temperature measuring equipment detection and the temperature of described second temperature measuring equipment are all less than described preset temperature, control described primary heater to open, described first control valve is not exclusively opened, described secondary heater is closed and described second control valve is opened completely, or control described secondary heater and open, described second control valve is not exclusively opened, described primary heater is closed and described first control valve is opened completely.
The control method of 13. 1 kinds of air-conditioners, is characterized in that, for the air-conditioner such as according to any one of claim 1 to 12, the control method of described air-conditioner comprises:
After the described air-conditioner of startup, judge whether to be in heating mode;
When judged result is no, the primary heater of outdoor heat exchanger assembly and secondary heater is closed, and the second control valve of the first control valve of described outdoor heat exchanger assembly and described outdoor heat exchanger assembly is opened completely;
When described judged result is for being, judge whether the temperature of the temperature of the First Heat Exchanger of described outdoor heat exchanger assembly and the second heat exchanger of described outdoor heat exchanger assembly is all more than or equal to preset temperature;
When the temperature of described First Heat Exchanger and the temperature of described second heat exchanger are all more than or equal to described preset temperature, the secondary heater of the primary heater of described outdoor heat exchanger assembly and described outdoor heat exchanger assembly is closed, and the second control valve of the first control valve of described outdoor heat exchanger assembly and described outdoor heat exchanger assembly is opened completely, otherwise, described primary heater is opened, described first control valve is not exclusively opened, described secondary heater is closed and described second control valve is opened completely, or described secondary heater is opened, described second control valve is not exclusively opened, described primary heater is closed and described first control valve is opened completely, until the temperature of the temperature of described First Heat Exchanger and described second heat exchanger is all more than or equal to described preset temperature.
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| CN104976737A (en) * | 2015-06-30 | 2015-10-14 | 广东美的制冷设备有限公司 | Air conditioner and refrigeration method |
| CN105953360A (en) * | 2016-05-04 | 2016-09-21 | 广东美的暖通设备有限公司 | Air conditioner and control method thereof |
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| JP3789620B2 (en) * | 1997-12-09 | 2006-06-28 | 三洋電機株式会社 | Air conditioner |
| CN200989704Y (en) * | 2006-12-13 | 2007-12-12 | 浙江盾安人工环境设备股份有限公司 | Low-temperature constant-temperature constant-humidity air conditioner unit |
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| CN204421439U (en) * | 2014-12-19 | 2015-06-24 | 广东美的制冷设备有限公司 | Air-conditioner |
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