CN106705378A - Air conditioner, and low-temperature heating control method and system - Google Patents
Air conditioner, and low-temperature heating control method and system Download PDFInfo
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- CN106705378A CN106705378A CN201710016340.7A CN201710016340A CN106705378A CN 106705378 A CN106705378 A CN 106705378A CN 201710016340 A CN201710016340 A CN 201710016340A CN 106705378 A CN106705378 A CN 106705378A
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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
-
- 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
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
-
- 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
- F24F2140/20—Heat-exchange fluid temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides an air conditioner, and a low-temperature heating control method and system. The air conditioner comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger, a first throttling apparatus, a shell-tube heat exchanger and a first electromagnetic valve, wherein one end of the indoor heat exchanger is connected to an air outlet of the compressor; one end of the outdoor heat exchanger is connected with the indoor heat exchanger; the first throttling apparatus is disposed between the indoor heat exchanger and the outdoor heat exchanger and respectively connected with the indoor heat exchanger and the outdoor heat exchanger; one end of the shell-tube heat exchanger is connected with the air outlet of the compressor, and the other end of the shell-tube heat exchanger is connected with the air inlet of the outdoor heat exchanger; and the first electromagnetic valve is connected with the indoor heat exchanger in parallel. By adopting the air conditioner provided by the invention, the temperature at the outlet of the outdoor heat exchanger is increased, so that the temperature of the return air entering the compressor is increased, the heating capacity of the air conditioner in a low-temperature environment is improved, a frosting process of the outdoor heat exchanger is slowed down, the user experience is improved, and the market competence of a product is improved.
Description
Technical field
The present invention relates to technical field of air conditioner, in particular to a kind of air-conditioner, the controlling party of low-temperature heating
Method and system.
Background technology
In heating operation, there is heat exchange in refrigerant to heat pump type air conditioner by outdoor heat converter with outdoor air,
Heat is absorbed from outdoor air and evaporated, into compressor, the refrigerant vapour of HTHP is compressed into through compressor, enter to enter the room
Inside heat exchanger heat release, heat is released come heating indoor air by indoor heat converter, user is enjoyed comfortable interior ring
Border.However, when outdoor environment temperature declines to a certain extent and humidity is suitable, the meeting frosting of outdoor heat converter surface, with
Frost layer is more and more thicker, and the heating effect of air-conditioning system worse and worse, can influence the heating performance of air-conditioning.
At present, the Defrost mode that domestic heat pump air conditioner is used all is to carry out Hot-air blowing device using the delivery temperature of compressor
Frost, that is, need compressor four-way Vavle switching to defrost.On the one hand, when defrosting is started, four-way reversing valve commutation makes air-conditioner
Outdoor heat converter heat release, indoor heat converter heat absorption, causes indoor environment temperature to reduce, so, in colder indoor environment
In, air-conditioner refrigerating operaton causes room temperature sometimes hot and sometimes cold, necessarily affects the comfort level that user uses air-conditioner；The opposing party
Face, in some areas, than larger, frequently defrost operation can influence four-way valve and the use longevity of other electrical parts to air humidity
Life；Another further aspect, the frost during defrosting due to outdoor heat converter bottom is more difficult cleared, and in top half, oneself finishes through defrosting
When, it is necessary to can complete completely when partly being defrosted under heat exchanger and defrost and enter normal heating operation state, because
This wastes a part of heat, and extends defrosting process, reduces the heating capacity of air-conditioner and the overall heating effect of reduction air-conditioner.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art or correlation technique.
Therefore, it is an object of the present invention to propose a kind of air-conditioner.
It is another object of the present invention to propose a kind of control method of low-temperature heating.
A further object of the present invention is to propose a kind of control system of low-temperature heating.
In view of this, the present invention proposes a kind of air-conditioner, including：Compressor；Indoor heat converter, indoor heat converter
One end be connected to the gas outlet of compressor；Outdoor heat converter, one end of outdoor heat converter is connected with indoor heat converter
Connect；First throttle device, between indoor heat converter and outdoor heat converter, respectively with indoor heat converter and outdoor heat
Exchanger is connected；Case tube heat exchanger, one end of case tube heat exchanger is connected with the gas outlet of compressor, the other end of case tube heat exchanger
It is connected with the air inlet of outdoor heat converter；First magnetic valve, it is in parallel with indoor heat converter.
The air-conditioner that the present invention is provided, by the way that one end of indoor heat converter to be connected to the gas outlet of compressor, and leads to
Cross be connected with indoor heat converter and outdoor heat converter respectively positioned at first throttle device between the two, and by package
One end of heat exchanger is connected with the gas outlet of compressor, and the other end is connected with the air inlet of outdoor heat converter, while by first
Magnetic valve is in parallel with indoor heat converter, realizes air-conditioner in heating operation, by case tube heat exchanger and control first
Magnetic valve is opened, and a part of refrigerant that indoor heat converter is exported is entered into case tube heat exchanger, and refrigerant enters in case tube heat exchanger
Row heating, so as to improve the outlet temperature of outdoor heat converter, and then improves the suction temperature for entering compressor, realizes raising
Air-conditioner heating capacity at low ambient temperatures, while delaying the Frost formation process of outdoor heat converter, lifts the use body of user
Test, strengthen the competitiveness of product in market.
According to the above-mentioned air-conditioner of the present invention, there can also be following additional technical characteristic：
In the above-mentioned technical solutions, it is preferable that second throttling device, be disposed in the outdoor heat exchanger and case tube heat exchanger it
Between.
In the technical scheme, second throttling device is disposed in the outdoor between heat exchanger and case tube heat exchanger, passed through
The aperture of second throttling device is adjusted, the refrigerant after being exchanged heat in control case tube heat exchanger enters the flow of outdoor heat converter, from
And the outlet temperature of outdoor heat converter can be adjusted, and then realize efficiently controlling the suction temperature into compressor, it is ensured that
Air conditioner heat-production reliability of operation, lifts the experience of user.
In specific embodiment, by by the refrigerant of the first magnetic valve and case tube heat exchanger shunt circuit and by first throttle
The refrigerant of device is mixed, and the aperture of second throttling device is determined by calculating, so as to control the outlet of outdoor heat converter
Temperature is to a certain temperature.
In the above-mentioned technical solutions, it is preferable that the second magnetic valve, one end of the second magnetic valve is connected to the outlet of compressor
Mouthful, the other end is connected to one end of case tube heat exchanger.
In the technical scheme, by the way that one end of the second magnetic valve to be connected to the gas outlet of compressor, other end connection
To one end of case tube heat exchanger, opened by controlling the second magnetic valve, make the high-temperature exhaust air of a part of compressor outlet and warp
The refrigerant for crossing the first magnetic valve is mixed, and improves the temperature for entering case tube heat exchanger refrigerant, and refrigerant enters in case tube heat exchanger
Row heating, realizes rapidly improving the outlet temperature of outdoor heat converter, and then rapidly improves the return air temperature for entering compressor
Degree, further improves air-conditioner heating capacity at low ambient temperatures, while delaying the Frost formation process of outdoor heat converter, enters
The experience of one step ground lifting user.Further, by adjusting the aperture of the second magnetic valve, compressor outlet can be controlled
The flow of the high-temperature exhaust air of mouth, so as to control to enter the temperature of case tube heat exchanger refrigerant, and then adjusts going out for outdoor heat converter
Mouth temperature, realization efficiently controls the suction temperature into compressor, it is ensured that air conditioner heat-production reliability of operation.
In the above-mentioned technical solutions, it is preferable that first throttle device and second throttling device are electric expansion valve.
In the technical scheme, electric expansion valve is set to by by first throttle device and second throttling device, due to
Electric expansion valve action response is fast, and the effect with energy-conservation, it is thereby achieved that saving electric energy, it is ensured that air-conditioner is in low temperature ring
The reliability of the heating capacity under border, lifts the experience of user.
The present invention also proposes a kind of control method of low-temperature heating, for air-conditioner, the control method bag of the low-temperature heating
Include：After air conditioner heat-production operation is detected, the first outlet temperature of outdoor heat converter is detected；Judging first outlet temperature is
It is no to be less than the first preset temperature value；When outlet temperature is less than the first preset temperature value, the first magnetic valve of air-conditioner is controlled to open
Open；And when outlet temperature is more than or equal to the first preset temperature value, control the first closed electromagnetic valve of air-conditioner.
Provided by the present invention for the control method of the low-temperature heating of air-conditioner, by detecting air conditioner heat-production operation
Afterwards, the first outlet temperature of outdoor heat converter is detected, and judges whether first outlet temperature is less than the first preset temperature value, when
When outlet temperature is less than the first preset temperature value, control the first magnetic valve of air-conditioner to open, improve going out for outdoor heat converter
Mouth temperature, and then the suction temperature for entering compressor is improved, realize and improve air-conditioner heating capacity at low ambient temperatures, together
The Frost formation process of Shi Yanhuan outdoor heat exchangers, lifts the experience of user.Further, when the outlet temperature of outdoor heat converter
When degree is more than or equal to the first preset temperature value, the suction temperature illustrated into compressor meets air-conditioner enough carries out good system
Heat operation, now controls the first closed electromagnetic valve of air-conditioner, air-conditioner to carry out normal heating operation, it is ensured that air-conditioner is normally made
Hot reliability of operation.
According to the control method of the above-mentioned low-temperature heating of the present invention, there can also be following additional technical characteristic：
In the above-mentioned technical solutions, it is preferable that after the first magnetic valve of air-conditioner opens the first preset duration, sensing chamber
The second outlet temperature of outer heat-exchanger；When second outlet temperature is less than the second preset temperature value more than the first preset temperature value
When, continue to control the first magnetic valve of air-conditioner to open；When second outlet temperature is less than the first preset temperature value, continue to control
First magnetic valve of air-conditioner is opened, and the second magnetic valve of control air-conditioner is opened；And when second outlet temperature is more than
During the second preset temperature value, the first closed electromagnetic valve of air-conditioner is controlled.
In the technical scheme, after the first magnetic valve of air-conditioner opens preset duration, by detecting outdoor heat exchange
The second outlet temperature of device, when second outlet temperature is less than the first preset temperature value, continues to control the first electromagnetism of air-conditioner
Valve is opened, and the second magnetic valve of control air-conditioner is opened, make the high-temperature exhaust air of a part of compressor outlet with by the
The refrigerant of one magnetic valve is mixed, and improves the temperature for entering case tube heat exchanger refrigerant, and refrigerant is added in case tube heat exchanger
Heat, realizes rapidly improving the outlet temperature of outdoor heat converter, and then rapidly improves the suction temperature for entering compressor, enters
One step ground improves air-conditioner heating capacity at low ambient temperatures, while delay the Frost formation process of outdoor heat converter, further
The experience of ground lifting user.Further, when second outlet temperature is default less than second more than the first preset temperature value warm
During angle value, continue to control the first magnetic valve of air-conditioner to open, improve the outlet temperature of outdoor heat converter, and then raising enters
The suction temperature of compressor, realizes and improves air-conditioner heating capacity at low ambient temperatures, while delaying outdoor heat converter
Frost formation process, lifted user experience.Further, when second outlet temperature is more than the second preset temperature value, say
The suction temperature of bright entrance compressor meets air-conditioner enough carries out good heating operation, controls the first magnetic valve of air-conditioner
Close, air-conditioner carries out normal heating operation, it is ensured that the reliability of the normal heating operation of air-conditioner.
In the above-mentioned technical solutions, it is preferable that after the second magnetic valve opens the second preset duration, detect the shell of air-conditioner
The outlet temperature T1 of heat exchange of heat pipe, and indoor heat converter outlet temperature T2；Calculate outlet temperature T1 and outlet temperature T2
Temperature difference；Judge temperature difference whether more than the 3rd preset temperature value；When temperature difference is more than three preset temperature values, control is empty
The aperture for adjusting the second magnetic valve of device is maximum gear aperture；And when temperature difference is less than or equal to three preset temperature values, control
Second closed electromagnetic valve of air-conditioner processed.
In the technical scheme, after opening the second preset duration in the second magnetic valve, detect that the package of air-conditioner is changed
The outlet temperature T1 of hot device, and indoor heat converter outlet temperature T2, and calculate outlet temperature T1's and outlet temperature T2
Temperature difference, when temperature difference is more than three preset temperature values, the aperture for controlling the second magnetic valve of air-conditioner is that maximum gear is opened
Degree, realizes rapidly improving the outlet temperature of outdoor heat converter, and then rapidly improves the suction temperature for entering compressor, carries
Air-conditioner high heating capacity at low ambient temperatures, while delaying the Frost formation process of outdoor heat exchanger, further lifts user
Experience.Further, when temperature difference is less than or equal to three preset temperature values, a part of compressor outlet is illustrated
With after the refrigerant of the first magnetic valve is mixed, the temperature into case tube heat exchanger refrigerant will not be carried significantly high-temperature exhaust air
Height, therefore control the second closed electromagnetic valve of air-conditioner, it is ensured that air-conditioner low-temperature heating reliability of operation, while saving electricity
Can, lift the experience of user.
In the above-mentioned technical solutions, it is preferable that the first preset temperature value is 0 DEG C；Second preset temperature value is 7 DEG C；3rd
Preset temperature value is 10 DEG C.
In the technical scheme, the first preset temperature value is 0 DEG C, and the second preset temperature value is 7 DEG C and the 3rd default temperature
Angle value is 10 DEG C, is respectively set to not by by the first preset temperature value, the second preset temperature value and the 3rd preset temperature value
Same reasonable temperature value, it is ensured that air-conditioner low-temperature heating reliability of operation, lifts the experience of user.
The present invention also proposes a kind of control system of low-temperature heating, for air-conditioner, the control system bag of the low-temperature heating
Include：First detection unit, for after air conditioner heat-production operation is detected, detecting the first outlet temperature of outdoor heat converter；
First judging unit, for judging first outlet temperature whether less than the first preset temperature value；First control unit, for working as
When mouth temperature is less than the first preset temperature value, the first magnetic valve of air-conditioner is controlled to open；And be additionally operable to when outlet temperature is big
When equal to the first preset temperature value, the first closed electromagnetic valve of air-conditioner is controlled.
The control system of the low-temperature heating that the present invention is provided, by the first detection unit, is detecting air conditioner heat-production fortune
After row, the first outlet temperature of outdoor heat converter is detected, and by the first judging unit, judge whether first outlet temperature is small
In the first preset temperature value, when outlet temperature is less than the first preset temperature value, by the first control unit, control air-conditioner
First magnetic valve is opened, and improves the outlet temperature of outdoor heat converter, and then improves the suction temperature for entering compressor, is realized
Air-conditioner heating capacity at low ambient temperatures is improved, while delaying the Frost formation process of outdoor heat exchanger, the use of user is lifted
Experience.Further, when the outlet temperature of outdoor heat converter is more than or equal to the first preset temperature value, illustrate to enter compressor
Suction temperature meet air-conditioner enough and carry out good heating operation, now by the first control unit, control air-conditioner
First closed electromagnetic valve, air-conditioner carries out normal heating operation, it is ensured that the reliability of the normal heating operation of air-conditioner.
According to the control system of the above-mentioned low-temperature heating of the present invention, there can also be following additional technical characteristic：
In the above-mentioned technical solutions, it is preferable that the first detection unit, it is additionally operable to open the in the first magnetic valve of air-conditioner
After one preset duration, the second outlet temperature of outdoor heat converter is detected；First control unit, is additionally operable to when second outlet temperature
When being less than the second preset temperature value more than the first preset temperature value, continue to control the first magnetic valve of air-conditioner to open；It is additionally operable to
When second outlet temperature is less than the first preset temperature value, continue to control the first magnetic valve of air-conditioner to open, and control is empty
The second magnetic valve of device is adjusted to open；And be additionally operable to, when second outlet temperature is more than the second preset temperature value, control air-conditioner
The first closed electromagnetic valve.
It is single by the first detection after the first magnetic valve of air-conditioner opens the first preset duration in the technical scheme
Unit, detects the second outlet temperature of outdoor heat converter, when second outlet temperature is less than the first preset temperature value, by first
Control unit, continues to control the first magnetic valve of air-conditioner to open, and the second magnetic valve of control air-conditioner is opened, and makes one
The high-temperature exhaust air of partial compression machine gas outlet is mixed with by the refrigerant of the first magnetic valve, is improved and is entered case tube heat exchanger refrigerant
Temperature, refrigerant heated in case tube heat exchanger, realizes rapidly improving the outlet temperature of outdoor heat converter, and then soon
The suction temperature into compressor is improved fastly, further improves air-conditioner heating capacity at low ambient temperatures, same to time delay
The Frost formation process of slow outdoor heat converter, further lifts the experience of user.Further, when second outlet temperature is big
When the first preset temperature value is less than the second preset temperature value, by the first control unit, continue to control the first electricity of air-conditioner
Magnet valve is opened, and improves the outlet temperature of outdoor heat converter, and then improves the suction temperature for entering compressor, realizes raising empty
Device heating capacity at low ambient temperatures is adjusted, while delaying the Frost formation process of outdoor heat converter, the experience of user is lifted.
Further, when second outlet temperature is more than the second preset temperature value, the suction temperature illustrated into compressor meets enough
Air-conditioner carries out good heating operation, by the first control unit, controls the first closed electromagnetic valve of air-conditioner, air-conditioner to enter
The normal heating operation of row, it is ensured that the reliability of the normal heating operation of air-conditioner.
In any of the above-described technical scheme, it is preferable that the control system of the low-temperature heating also includes the second detection unit, use
After the second preset duration is opened in the second magnetic valve, the outlet temperature T1 of the case tube heat exchanger of air-conditioner is detected, and it is indoor
The outlet temperature T2 of heat exchanger；Computing unit, the temperature difference for calculating outlet temperature T1 and outlet temperature T2；Second judges
Whether unit, be additionally operable to judge temperature difference more than the 3rd preset temperature value；Second control unit, for being more than the 3rd in temperature difference
During preset temperature value, the aperture for controlling the second magnetic valve of air-conditioner is maximum gear aperture；And be additionally operable to small in temperature difference
When equal to three preset temperature values, the second closed electromagnetic valve of air-conditioner is controlled.
In the technical scheme, by the second detection unit, after the second magnetic valve opens the second preset duration, detection is empty
Adjust the outlet temperature T1 of the case tube heat exchanger of device, and indoor heat converter outlet temperature T2, and by computing unit, calculate
The temperature difference of outlet temperature T1 and outlet temperature T2, then by the second judging unit, judge whether temperature difference is preset more than the 3rd
Temperature value, when temperature difference is more than three preset temperature values, by the second control unit, controls the second magnetic valve of air-conditioner
Aperture is maximum gear aperture, realizes rapidly improving the outlet temperature of outdoor heat converter, and then rapidly raising enters pressure
The suction temperature of contracting machine, improves air-conditioner heating capacity at low ambient temperatures, while delay the Frost formation process of outdoor heat exchanger,
Further lift the experience of user.Further, when temperature difference is less than or equal to three preset temperature values, one is illustrated
The high-temperature exhaust air of partial compression machine gas outlet with after the refrigerant of the first magnetic valve is mixed, into case tube heat exchanger refrigerant
Temperature will not be increased substantially, therefore control the second closed electromagnetic valve of air-conditioner, it is ensured that what air-conditioner low-temperature heating ran can
By property, while saving electric energy, the experience of user is lifted.
In the above-mentioned technical solutions, it is preferable that the first preset temperature value is 0 DEG C；Second preset temperature value is 7 DEG C；3rd
Preset temperature value is 10 DEG C.
In the technical scheme, the first preset temperature value is 0 DEG C, and the second preset temperature value is 7 DEG C and the 3rd default temperature
Angle value is 10 DEG C, is respectively set to not by by the first preset temperature value, the second preset temperature value and the 3rd preset temperature value
Same reasonable temperature value, it is ensured that air-conditioner low-temperature heating reliability of operation, lifts the experience of user.
Additional aspect of the invention and advantage will become obvious in following description section, or by practice of the invention
Recognize.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the schematic diagram of the air-conditioner of one embodiment of the present of invention；
Fig. 2 is the schematic flow sheet of the control method of the low-temperature heating for air-conditioner of one embodiment of the present of invention；
Fig. 3 is the schematic diagram of the control system of the low-temperature heating for air-conditioner of one embodiment of the present of invention；
Fig. 4 is the schematic diagram of the control system of the low-temperature heating for air-conditioner of an alternative embodiment of the invention.
Wherein, the corresponding relation in Fig. 1 between reference and component names is：
1 air-conditioner, 10 compressors, 12 indoor heat converters, 14 outdoor heat converters, 16 first throttle devices, 18 packages
Heat exchanger, 20 first magnetic valves, 22 second throttling devices, 24 second magnetic valves.
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied to be further described in detail the present invention.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not limited to following public affairs
The limitation of the specific embodiment opened.
Air-conditioner 1 described according to some embodiments of the invention is described referring to Fig. 1.
As shown in figure 1, the present invention proposes a kind of air-conditioner 1, including：Compressor 10；Indoor heat converter 12, Indoor Thermal
One end of exchanger 12 is connected to the gas outlet of compressor 10；Outdoor heat converter 14, one end and room of outdoor heat converter 14
Inside heat exchanger 12 is connected；First throttle device 16, between indoor heat converter 12 and outdoor heat converter 14, respectively
It is connected with indoor heat converter 12 and outdoor heat converter 14；Case tube heat exchanger 18, one end of case tube heat exchanger 18 and compressor
10 gas outlet is connected, and the other end of case tube heat exchanger 18 is connected with the air inlet of outdoor heat converter 14；First magnetic valve 20,
It is in parallel with indoor heat converter 12.
The air-conditioner 1 that the present invention is provided, by the way that one end of indoor heat converter 12 to be connected to the gas outlet of compressor 10,
And by being connected with indoor heat converter 12 and outdoor heat converter 14 respectively positioned at first throttle device 16 between the two,
And one end of case tube heat exchanger 18 is connected with the gas outlet of compressor 10, the air inlet of the other end and outdoor heat converter 14
It is connected, at the same the first magnetic valve 20 is in parallel with indoor heat converter 12, air-conditioner 1 is realized in heating operation, by shell
Heat exchange of heat pipe 18 and the first magnetic valve 20 of control are opened, and a part of refrigerant that indoor heat converter 12 is exported is changed into package
Hot device 18, refrigerant is heated in case tube heat exchanger 18, so as to improve the outlet temperature of outdoor heat converter 14, and then is improved
Into the suction temperature of compressor 10, realize and improve the heating capacity at low ambient temperatures of air-conditioner 1, while delaying outdoor heat
The Frost formation process of exchanger 14, lifts the experience of user, strengthens the competitiveness of product in market.
In one embodiment of the invention, it is preferable that second throttling device 22, heat exchanger 14 and shell are disposed in the outdoor
Between heat exchange of heat pipe 18.
In this embodiment, second throttling device 22 is disposed in the outdoor between heat exchanger 14 and case tube heat exchanger 18,
By adjusting the aperture of second throttling device 22, the refrigerant after being exchanged heat in control case tube heat exchanger 14 enters outdoor heat converter 14
Flow, such that it is able to adjust the outlet temperature of outdoor heat converter 14, and then realize efficiently controlling into compressor 10
Suction temperature, it is ensured that the reliability of the heating operation of air-conditioner 1, lifts the experience of user.
In specific embodiment, by by the refrigerant of the first magnetic valve 20 and the shunt circuit of case tube heat exchanger 14 and by first
The refrigerant of throttling arrangement 16 is mixed, and the aperture of second throttling device 22 is determined by calculating, so as to control outdoor heat exchange
The outlet temperature of device 14 is to a certain temperature.
In one embodiment of the invention, it is preferable that the second magnetic valve 24, one end of the second magnetic valve 24 is connected to pressure
The gas outlet of contracting machine 10, the other end is connected to one end of case tube heat exchanger 18.
In this embodiment, by the way that one end of the second magnetic valve 24 to be connected to the gas outlet of compressor 18, the other end connects
One end of case tube heat exchanger 18 is connected to, is opened by controlling the second magnetic valve 24, make the high temperature of the gas outlet of a part of compressor 10
Exhaust is mixed with by the refrigerant of the first magnetic valve 20, improves the temperature for entering the refrigerant of case tube heat exchanger 18, and refrigerant is in shell
Heated in heat exchange of heat pipe 18, realize rapidly improve outdoor heat converter 14 outlet temperature, and then rapidly improve into
Enter the suction temperature of compressor 10, further improve the heating capacity at low ambient temperatures of air-conditioner 1, while delaying outdoor heat
The Frost formation process of exchanger 14, further lifts the experience of user.Further, by adjusting the second magnetic valve 24
Aperture, can control the flow of the high-temperature exhaust air of the gas outlet of compressor 10, so as to control to enter the temperature of the refrigerant of case tube heat exchanger 18
Degree, and then the outlet temperature of outdoor heat converter 14 is adjusted, realization efficiently controls the suction temperature into compressor 10, it is ensured that
The reliability of the heating operation of air-conditioner 1.
In one embodiment of the invention, it is preferable that first throttle device 16 and second throttling device 22 are electronics
Expansion valve.
In this embodiment, electric expansion valve is set to by by first throttle device 16 and second throttling device 22, by
It is fast in electric expansion valve action response, and the effect with energy-conservation, it is thereby achieved that saving electric energy, it is ensured that air-conditioner 1 is in low temperature
The reliability of the heating capacity under environment, lifts the experience of user.
As shown in Fig. 2 the flow of the control method of the low-temperature heating for air-conditioner of one embodiment of the present of invention is shown
It is intended to：
Step 202, after air conditioner heat-production operation is detected, detects the first outlet temperature of outdoor heat converter；
Whether step 204, judge first outlet temperature less than the first preset temperature value；When outlet temperature is preset less than first
During temperature value, step 206 is carried out；When outlet temperature is more than or equal to the first preset temperature value, step 208 is carried out；
Step 206, controls the first magnetic valve of air-conditioner to open；And
Step 208, controls the first closed electromagnetic valve of air-conditioner.
Provided by the present invention for the control method of the low-temperature heating of air-conditioner, by detecting air conditioner heat-production operation
Afterwards, the first outlet temperature of outdoor heat converter is detected, and judges whether first outlet temperature is less than the first preset temperature value, when
When outlet temperature is less than the first preset temperature value, control the first magnetic valve of air-conditioner to open, improve going out for outdoor heat converter
Mouth temperature, and then the suction temperature for entering compressor is improved, realize and improve air-conditioner heating capacity at low ambient temperatures, together
The Frost formation process of Shi Yanhuan outdoor heat exchangers, lifts the experience of user.Further, when the outlet temperature of outdoor heat converter
When degree is more than or equal to the first preset temperature value, the suction temperature illustrated into compressor meets air-conditioner enough carries out good system
Heat operation, now controls the first closed electromagnetic valve of air-conditioner, air-conditioner to carry out normal heating operation, it is ensured that air-conditioner is normally made
Hot reliability of operation.
As shown in Fig. 2 the flow of the control method of the low-temperature heating for air-conditioner of an alternative embodiment of the invention
Schematic diagram：
Step 202, after air conditioner heat-production operation is detected, detects the first outlet temperature of outdoor heat converter；
Whether step 204, judge first outlet temperature less than the first preset temperature value；When outlet temperature is preset less than first
During temperature value, step 206 is carried out；When outlet temperature is more than or equal to the first preset temperature value, step 208 is carried out；
Step 206, controls the first magnetic valve of air-conditioner to open；
Step 208, controls the first closed electromagnetic valve of air-conditioner；
Step 210, after the first magnetic valve of air-conditioner opens the first preset duration, the second of detection outdoor heat converter
Outlet temperature；
Whether step 212, judge second outlet temperature less than the first preset temperature value；When second outlet temperature is less than first
During preset temperature value, step 214 is carried out；When second outlet temperature is more than or equal to the first preset temperature value, step 216 is carried out；
Step 214, controls the second magnetic valve of air-conditioner to open；
Whether step 216, judge second outlet temperature less than the second preset temperature value；When second outlet temperature is less than second
During preset temperature value, step 218 is carried out；When second outlet temperature is more than or equal to the second preset temperature value, step 208 is carried out；
Step 218, proceeds step 206, until second outlet temperature is more than or equal to the second preset temperature value, is walked
Rapid 208.
In this embodiment, after the first magnetic valve of air-conditioner opens the first preset duration, by detecting that outdoor heat is handed over
The second outlet temperature of parallel operation, when second outlet temperature is less than the first preset temperature value, continues to control the first electricity of air-conditioner
Magnet valve is opened, and the second magnetic valve of control air-conditioner is opened, and is made the high-temperature exhaust air of a part of compressor outlet and is passed through
The refrigerant of the first magnetic valve is mixed, and improves the temperature for entering case tube heat exchanger refrigerant, and refrigerant is carried out in case tube heat exchanger
Heating, realizes rapidly improving the outlet temperature of outdoor heat converter, and then rapidly improves the suction temperature for entering compressor,
Air-conditioner heating capacity at low ambient temperatures is further improved, while delaying the Frost formation process of outdoor heat converter, enters one
The experience of step ground lifting user.Further, when second outlet temperature is preset more than the first preset temperature value less than second
During temperature value, continue control air-conditioner the first magnetic valve open, improve outdoor heat converter outlet temperature, and then improve into
Enter the suction temperature of compressor, realize and improve air-conditioner heating capacity at low ambient temperatures, while delaying outdoor heat exchange
The Frost formation process of device, lifts the experience of user.Further, when second outlet temperature is more than the second preset temperature value,
The suction temperature illustrated into compressor meets air-conditioner enough carries out good heating operation, controls the first electromagnetism of air-conditioner
Valve is closed, and air-conditioner carries out normal heating operation, it is ensured that the reliability of the normal heating operation of air-conditioner.
As shown in Fig. 2 the flow of the control method of the low-temperature heating for air-conditioner of yet another embodiment of the present invention
Schematic diagram：
Step 202, after air conditioner heat-production operation is detected, detects the first outlet temperature of outdoor heat converter；
Whether step 204, judge first outlet temperature less than the first preset temperature value；When outlet temperature is preset less than first
During temperature value, step 206 is carried out；When outlet temperature is more than or equal to the first preset temperature value, step 208 is carried out；
Step 206, controls the first magnetic valve of air-conditioner to open；
Step 208, controls the first closed electromagnetic valve of air-conditioner；
Step 210, after the first magnetic valve of air-conditioner opens the first preset duration, the second of detection outdoor heat converter
Outlet temperature；
Whether step 212, judge second outlet temperature less than the first preset temperature value；When second outlet temperature is less than first
During preset temperature value, step 214 is carried out；When second outlet temperature is more than or equal to the first preset temperature value, step 216 is carried out；
Step 214, controls the second magnetic valve of air-conditioner to open, while carrying out step 206；
Whether step 216, judge second outlet temperature less than the second preset temperature value；When second outlet temperature is less than second
During preset temperature value, step 218 is carried out；When second outlet temperature is more than or equal to the second preset temperature value, step 208 is carried out；
Step 218, proceeds step 206, until second outlet temperature is more than or equal to the second preset temperature value, is walked
Rapid 208；
Step 220, after the second magnetic valve opens the second preset duration, detects the outlet temperature of the case tube heat exchanger of air-conditioner
Degree T1, and indoor heat converter outlet temperature T2；
Step 222, calculates the temperature difference of outlet temperature T1 and outlet temperature T2；
Whether step 224, judge temperature difference more than the 3rd preset temperature value；It is more than the 3rd preset temperature value in temperature difference
When, carry out step 226；When temperature difference is less than or equal to three preset temperature values, step 228 is carried out；
Step 226, the aperture for controlling the second magnetic valve of air-conditioner is maximum gear aperture；And
Step 228, controls the second closed electromagnetic valve of air-conditioner.
In this embodiment, after opening the second preset duration in the second magnetic valve, the package heat exchange of air-conditioner is detected
The outlet temperature T1 of device, and indoor heat converter outlet temperature T2, and calculate the temperature of outlet temperature T1 and outlet temperature T2
Degree is poor, and when temperature difference is more than three preset temperature values, the aperture for controlling the second magnetic valve of air-conditioner is maximum gear aperture,
Realize rapidly improving the outlet temperature of outdoor heat converter, and then rapidly improve the suction temperature for entering compressor, improve
Air-conditioner heating capacity at low ambient temperatures, while delaying the Frost formation process of outdoor heat exchanger, further lifts user's
Experience.Further, when temperature difference is less than or equal to three preset temperature values, the height of a part of compressor outlet is illustrated
With after the refrigerant of the first magnetic valve is mixed, the temperature into case tube heat exchanger refrigerant will not be carried significantly for temperature exhaust
Height, therefore control the second closed electromagnetic valve of air-conditioner, it is ensured that air-conditioner low-temperature heating reliability of operation, while saving electricity
Can, lift the experience of user.
In specific embodiment, the first preset duration is identical with the second preset duration or difference.
In one embodiment of the invention, it is preferable that the first preset temperature value is 0 DEG C；Second preset temperature value is 7
℃；3rd preset temperature value is 10 DEG C.
In this embodiment, the first preset temperature value is 0 DEG C, and the second preset temperature value is 7 DEG C and the 3rd preset temperature
It is 10 DEG C to be worth, and difference is respectively set to by by the first preset temperature value, the second preset temperature value and the 3rd preset temperature value
Reasonable temperature value, it is ensured that air-conditioner low-temperature heating reliability of operation, lifted user experience.
As shown in figure 3, the signal of the control system 300 of the low-temperature heating for air-conditioner of one embodiment of the present of invention
Figure：
First detection unit 302, for after air conditioner heat-production operation is detected, the first of detection outdoor heat converter to go out
Mouth temperature；
First judging unit 304, for judging first outlet temperature whether less than the first preset temperature value；
First control unit 306, for when outlet temperature is less than the first preset temperature value, the first of control air-conditioner to be electric
Magnet valve is opened；And be additionally operable to, when outlet temperature is more than or equal to the first preset temperature value, control the first magnetic valve of air-conditioner
Close.
Provided by the present invention for the control system 300 of the low-temperature heating of air-conditioner, by the first detection unit 302,
After detecting air conditioner heat-production operation, the first outlet temperature of outdoor heat converter is detected, and by the first judging unit 304,
Whether first outlet temperature is judged less than the first preset temperature value, when outlet temperature is less than the first preset temperature value, by the
One control unit 306, controls the first magnetic valve of air-conditioner to open, and improves the outlet temperature of outdoor heat converter, and then improve
Into the suction temperature of compressor, realize and improve air-conditioner heating capacity at low ambient temperatures, while delaying outdoor heat exchange
The Frost formation process of device, lifts the experience of user.Further, when the outlet temperature of outdoor heat converter is more than or equal to first
During preset temperature value, the suction temperature illustrated into compressor meets air-conditioner enough carries out good heating operation, now leads to
The first control unit 306 is crossed, controls the first closed electromagnetic valve of air-conditioner, air-conditioner to carry out normal heating operation, it is ensured that air-conditioning
The reliability of the normal heating operation of device.
In one embodiment of the invention, it is preferable that the first detection unit 302, it is additionally operable to the first electricity in air-conditioner
After magnet valve opens the first preset duration, the second outlet temperature of outdoor heat converter is detected；First control unit 306, is additionally operable to
When second outlet temperature is less than the second preset temperature value more than the first preset temperature value, continue to control the first electromagnetism of air-conditioner
Valve is opened；It is additionally operable to, when second outlet temperature is less than the first preset temperature value, continue to control the first magnetic valve of air-conditioner to open
Open, and the second magnetic valve of control air-conditioner is opened；And be additionally operable to be more than the second preset temperature value when second outlet temperature
When, control the first closed electromagnetic valve of air-conditioner.
In this embodiment, after the first magnetic valve of air-conditioner opens the first preset duration, by the first detection unit
302, the second outlet temperature of outdoor heat converter is detected, when second outlet temperature is less than the first preset temperature value, by the
One control unit 306, continues to control the first magnetic valve of air-conditioner to open, and the second magnetic valve of control air-conditioner is opened,
The high-temperature exhaust air of a part of compressor outlet is mixed with by the refrigerant of the first magnetic valve, improve and enter package heat exchange
The temperature of device refrigerant, refrigerant is heated in case tube heat exchanger, realizes rapidly improving the outlet temperature of outdoor heat converter,
And then the suction temperature for entering compressor is rapidly improved, air-conditioner heating capacity at low ambient temperatures is further improved,
Delay the Frost formation process of outdoor heat converter simultaneously, further lift the experience of user.Further, second outlet is worked as
When temperature is less than the second preset temperature value more than the first preset temperature value, by the first control unit 306, continue to control air-conditioner
The first magnetic valve open, improve outdoor heat converter outlet temperature, and then improve enter compressor suction temperature, realize
Air-conditioner heating capacity at low ambient temperatures is improved, while delay the Frost formation process of outdoor heat converter, lifting user's
Experience.Further, when second outlet temperature is more than the second preset temperature value, the suction temperature into compressor is illustrated
Meeting air-conditioner enough carries out good heating operation, by the first control unit 306, controls the first magnetic valve of air-conditioner to close
Close, air-conditioner carries out normal heating operation, it is ensured that the reliability of the normal heating operation of air-conditioner.
As shown in figure 4, the control system 400 of the low-temperature heating for air-conditioner of an alternative embodiment of the invention is shown
It is intended to：
First detection unit 402, for after air conditioner heat-production operation is detected, the first of detection outdoor heat converter to go out
Mouth temperature；
First judging unit 404, for judging first outlet temperature whether less than the first preset temperature value；
First control unit 406, for when outlet temperature is less than the first preset temperature value, the first of control air-conditioner to be electric
Magnet valve is opened；And be additionally operable to, when outlet temperature is more than or equal to the first preset temperature value, control the first magnetic valve of air-conditioner
Close；
First detection unit 402, is additionally operable to after the first magnetic valve of air-conditioner opens the first preset duration, and detection is outdoor
The second outlet temperature of heat exchanger；
First control unit 406, is additionally operable to when second outlet temperature more than the first preset temperature value less than the second default temperature
During angle value, continue to control the first magnetic valve of air-conditioner to open；It is additionally operable to be less than the first preset temperature value when second outlet temperature
When, continue to control the first magnetic valve of air-conditioner to open, and the second magnetic valve of control air-conditioner is opened；And be additionally operable to work as
When second outlet temperature is more than the second preset temperature value, the first closed electromagnetic valve of air-conditioner is controlled；
Second detection unit 408, for after the second magnetic valve opens the second preset duration, detecting that the package of air-conditioner is changed
The outlet temperature T1 of hot device, and indoor heat converter outlet temperature T2；
Computing unit 410, the temperature difference for calculating outlet temperature T1 and outlet temperature T2；
Whether the second judging unit 412, be additionally operable to judge temperature difference more than the 3rd preset temperature value；
Second control unit 414, for when temperature difference is more than three preset temperature values, controlling the second electromagnetism of air-conditioner
The aperture of valve is maximum gear aperture；And be additionally operable to, when temperature difference is less than or equal to three preset temperature values, control air-conditioner
The second closed electromagnetic valve.
In this embodiment, by the second detection unit 408, after the second magnetic valve opens the second preset duration, detection
The outlet temperature T1 of the case tube heat exchanger of air-conditioner, and indoor heat converter outlet temperature T2, and by computing unit
410, the temperature difference of outlet temperature T1 and outlet temperature T2 is calculated, then by the second judging unit 412, judge whether temperature difference is big
In the 3rd preset temperature value, when temperature difference is more than three preset temperature values, by the second control unit 414, air-conditioner is controlled
The aperture of the second magnetic valve be maximum gear aperture, realize rapidly improving the outlet temperature of outdoor heat converter, and then soon
The suction temperature into compressor is improved fastly, air-conditioner heating capacity at low ambient temperatures is improved, while delaying outdoor to change
The Frost formation process of hot device, further lifts the experience of user.Further, in temperature difference less than or equal to the 3rd default temperature
During angle value, illustrate that the high-temperature exhaust air of a part of compressor outlet, with after the refrigerant of the first magnetic valve is mixed, enters
The temperature of case tube heat exchanger refrigerant will not be increased substantially, therefore by the second control unit 414, the second electricity of control air-conditioner
Magnet valve is closed, it is ensured that air-conditioner low-temperature heating reliability of operation, while saving electric energy, lifts the experience of user.
In specific embodiment, the first preset duration is identical with the second preset duration or difference.
In one embodiment of the invention, it is preferable that the first preset temperature value is 0 DEG C；Second preset temperature value is 7
℃；3rd preset temperature value is 10 DEG C.
In this embodiment, the first preset temperature value is 0 DEG C, and the second preset temperature value is 7 DEG C and the 3rd preset temperature
It is 10 DEG C to be worth, and difference is respectively set to by by the first preset temperature value, the second preset temperature value and the 3rd preset temperature value
Reasonable temperature value, it is ensured that air-conditioner low-temperature heating reliability of operation, lifted user experience.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (12)
1. a kind of air-conditioner, it is characterised in that including：
Compressor；
Indoor heat converter, one end of the indoor heat converter is connected to the gas outlet of the compressor；
Outdoor heat converter, one end of the outdoor heat converter is connected with the indoor heat converter；
First throttle device, between the indoor heat converter and outdoor heat converter, respectively with the indoor heat exchange
Device is connected with outdoor heat converter；
Case tube heat exchanger, one end of the case tube heat exchanger is connected with the gas outlet of the compressor, the case tube heat exchanger
The other end is connected with the air inlet of the outdoor heat converter；
First magnetic valve, it is in parallel with the indoor heat converter.
2. air-conditioner according to claim 1, it is characterised in that also include：
Second throttling device, is arranged between the outdoor heat converter and the case tube heat exchanger.
3. air-conditioner according to claim 2, it is characterised in that also include：
Second magnetic valve, one end of second magnetic valve is connected to the gas outlet of the compressor, and the other end is connected to described
One end of case tube heat exchanger.
4. air-conditioner according to claim 2, it is characterised in that
The first throttle device and the second throttling device are electric expansion valve.
5. a kind of control method of low-temperature heating, for air-conditioner, it is characterised in that the control method bag of the low-temperature heating
Include：
After the air conditioner heat-production operation is detected, the first outlet temperature of outdoor heat converter is detected；
Judge the first outlet temperature whether less than the first preset temperature value；
When the outlet temperature is less than first preset temperature value, the first magnetic valve of the air-conditioner is controlled to open；With
And
When the outlet temperature is more than or equal to first preset temperature value, the first magnetic valve of the air-conditioner is controlled to close
Close.
6. the control method of low-temperature heating according to claim 5, it is characterised in that also include：
After the first magnetic valve of the air-conditioner opens the first preset duration, the second outlet of the outdoor heat converter is detected
Temperature；
When the second outlet temperature is less than second preset temperature value more than or equal to first preset temperature value, continue
First magnetic valve of the air-conditioner is controlled to open, until the second outlet temperature is more than or equal to the described second default temperature
Angle value；
When the second outlet temperature is less than first preset temperature value, continue to control first electricity of the air-conditioner
Magnet valve is opened, and controls the second magnetic valve of the air-conditioner to open；And
When the second outlet temperature is more than or equal to second preset temperature value, first electricity of the air-conditioner is controlled
Magnet valve is closed.
7. the control method of low-temperature heating according to claim 6, it is characterised in that also include：
After second magnetic valve opens the second preset duration, the outlet temperature of the case tube heat exchanger of the air-conditioner is detected
T1, and indoor heat converter outlet temperature T2；
Calculate the temperature difference of the outlet temperature T1 and the outlet temperature T2；
Judge the temperature difference whether more than the 3rd preset temperature value；
When the temperature difference is more than three preset temperature value, the aperture of second magnetic valve of the air-conditioner is controlled
It is maximum gear aperture；And
When the temperature difference is less than or equal to three preset temperature value, second magnetic valve of the air-conditioner is controlled to close
Close.
8. the control method of low-temperature heating according to claim 7, it is characterised in that
First preset temperature value is 0 DEG C；
Second preset temperature value is 7 DEG C；
3rd preset temperature value is 10 DEG C.
9. a kind of control system of low-temperature heating, for air-conditioner, it is characterised in that the control system bag of the low-temperature heating
Include：
First detection unit, for after the air conditioner heat-production operation is detected, detecting the first outlet of outdoor heat converter
Temperature；
First judging unit, for judging the first outlet temperature whether less than the first preset temperature value；
First control unit, for when the outlet temperature is less than first preset temperature value, controlling the air-conditioner
First magnetic valve is opened；And
It is additionally operable to, when the outlet temperature is more than or equal to first preset temperature value, control the first electromagnetism of the air-conditioner
Valve is closed.
10. the control system of low-temperature heating according to claim 9, it is characterised in that
First detection unit, is additionally operable to after first magnetic valve of the air-conditioner opens the first preset duration, inspection
Survey the second outlet temperature of the outdoor heat converter；
First control unit, is additionally operable to be less than institute more than or equal to first preset temperature value when the second outlet temperature
When stating the second preset temperature value, continue to control first magnetic valve of the air-conditioner to open, until the second outlet temperature
Degree is more than or equal to second preset temperature value；
It is additionally operable to, when the second outlet temperature is less than first preset temperature value, continue to control the described of the air-conditioner
First magnetic valve is opened, and controls the second magnetic valve of the air-conditioner to open；And
It is additionally operable to, when the second outlet temperature is more than or equal to second preset temperature value, control the described of the air-conditioner
First closed electromagnetic valve.
The control system of 11. low-temperature heatings according to claim 10, it is characterised in that also include：
Second detection unit, for after second magnetic valve opens the second preset duration, detecting the package of the air-conditioner
The outlet temperature T1 of heat exchanger, and indoor heat converter outlet temperature T2；
Computing unit, the temperature difference for calculating the outlet temperature T1 and the outlet temperature T2；
Whether the second judging unit, be additionally operable to judge the temperature difference more than the 3rd preset temperature value；
Second control unit, for when the temperature difference is more than three preset temperature value, controlling the institute of the air-conditioner
The aperture for stating the second magnetic valve is maximum gear aperture；And
It is additionally operable to be controlled when the temperature difference is less than or equal to three preset temperature value second electricity of the air-conditioner
Magnet valve is closed.
The control system of 12. low-temperature heatings according to claim 11, it is characterised in that
First preset temperature value is 0 DEG C；
Second preset temperature value is 7 DEG C；
3rd preset temperature value is 10 DEG C.
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| CN201710016340.7A CN106705378B (en) | 2017-01-10 | 2017-01-10 | Air conditioner and low-temperature heating control method and system |
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| CN201710016340.7A CN106705378B (en) | 2017-01-10 | 2017-01-10 | Air conditioner and low-temperature heating control method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112856744A (en) * | 2019-11-28 | 2021-05-28 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and readable storage medium |
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| CN106288483A (en) * | 2016-08-03 | 2017-01-04 | 美的集团武汉制冷设备有限公司 | A kind of air-conditioner and the method improving air conditioner heat-production effect |
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| CN205066274U (en) * | 2014-12-31 | 2016-03-02 | 江苏兆胜空调有限公司 | Novel energy -saving uninterrupted cold supply hot air defrosting control system |
| CN105258408A (en) * | 2015-10-08 | 2016-01-20 | Tcl空调器(中山)有限公司 | Air conditioner and defrosting method for air conditioner |
| CN106288483A (en) * | 2016-08-03 | 2017-01-04 | 美的集团武汉制冷设备有限公司 | A kind of air-conditioner and the method improving air conditioner heat-production effect |
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| CN112856744A (en) * | 2019-11-28 | 2021-05-28 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and readable storage medium |
| CN112856744B (en) * | 2019-11-28 | 2022-09-27 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and readable storage medium |
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