CN110500702A - Air conditioner, indoor unit electric expansion valve control method and device - Google Patents
Air conditioner, indoor unit electric expansion valve control method and device Download PDFInfo
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- CN110500702A CN110500702A CN201910792068.0A CN201910792068A CN110500702A CN 110500702 A CN110500702 A CN 110500702A CN 201910792068 A CN201910792068 A CN 201910792068A CN 110500702 A CN110500702 A CN 110500702A
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- indoor unit
- electric expansion
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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
-
- 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
- F24F11/56—Remote control
-
- 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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the present invention provide a kind of air conditioner, indoor unit electric expansion valve control method and device, be related to air-conditioning technical field, after certain indoor unit is out of service in multi-online air-conditioning system, reduce the compressor output power of outdoor unit, save the energy.This method comprises:, if indoor unit is out of service, obtaining the inlet temperature and outlet temperature of the heat exchanger of indoor unit when indoor unit is in heating mode；Inlet temperature is temperature when refrigerant flows into indoor set heat exchanger, and outlet temperature is temperature when refrigerant flows out indoor set heat exchanger；The difference of outlet temperature and inlet temperature is calculated, and calculates the variation of electric expansion valve according to difference；Judge difference whether in preset temperature range；If not in preset temperature range, the aperture of electric expansion valve is adjusted according to variation for difference.The present invention is applied to multi-online air-conditioning system.
Description
Technical field
The present invention relates to the controls of field air-conditioning technical field more particularly to a kind of air conditioner, the electric expansion valve of indoor unit
Method and device processed.
Background technique
Multi-online air-conditioning system refers to that an outdoor unit connects the air-conditioning of two or more indoor units by piping
System, and the electric expansion valve of indoor unit is common throttling set in multi-online air-conditioning system, is mainly used for adjusting refrigerant
Flow.
When the indoor unit in multi-online air-conditioning system is out of service, the electric expansion valve of indoor unit does not close usually completely
It closes, but opens small aperture.Because multi-online air-conditioning system at runtime refrigerant and compressor oil together in refrigerant pipe
Flowing, therefore when a certain indoor unit in multi-online air-conditioning system is out of service, if the aperture of the electric expansion valve of indoor unit
It is too small, it may result in the accumulation of compressor oil and refrigerant at electric expansion valve, and then influence the normal operation of compressor；And
If the aperture of the electric expansion valve of indoor unit is excessive, the output power of the compressor of outdoor unit be will increase, and then lead to the energy
Waste.
Summary of the invention
The embodiment of the present invention provide a kind of air conditioner, indoor unit electric expansion valve control method and device, be used for
After certain indoor unit is out of service in multi-online air-conditioning system, the electric expansion valve for controlling the indoor unit keeps suitable aperture,
Not only the outdoor unit that the indoor unit can have been made to correspond to air-conditioning system operates normally, but also may insure the outdoor unit of the air-conditioning system not
Energy waste can be caused because the aperture of the electric expansion valve of the indoor unit is excessive.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, providing a kind of control method of the electric expansion valve of indoor unit, it is applied to multi-online air-conditioning system, packet
It includes: when indoor unit is in heating mode, if indoor unit is out of service, obtaining the inlet temperature of the heat exchanger of indoor unit and go out
Mouth temperature；Inlet temperature is temperature when refrigerant flows into indoor set heat exchanger, and outlet temperature is that refrigerant flows out indoor set heat exchanger
When temperature；The difference of outlet temperature and inlet temperature is calculated, and calculates the variation of electric expansion valve according to difference；It is poor to judge
Whether value is in preset temperature range；If difference adjusts electric expansion valve not in preset temperature range, according to variation
Aperture.
The embodiment of the present invention provides a kind of control method of the electric expansion valve of indoor unit, in multi-online air-conditioning system
In certain indoor unit it is out of service when, changed according to the difference of the inlet temperature of indoor set heat exchanger and outlet temperature and calculate interior
The variation of the electric expansion valve of machine adjusts the aperture of the electric expansion valve of indoor unit out of service according to the variation, from
And the aperture of the electric expansion valve of indoor unit out of service is made to may remain in suitable range, so that out of service
The compressor of the corresponding outdoor unit of indoor unit will not because of the electric expansion valve of the indoor unit aperture it is too small caused by refrigerant pipe
The accumulation of road inner compressor oil and refrigerant and be unable to operate normally, will not be because of the aperture mistake of the electric expansion valve of the indoor unit
Increase energy consumption greatly, so technical solution provided in an embodiment of the present invention can guarantee air-conditioning system reliability, that is, failsafe
While, so that compressor is exported suitable power, saves the energy.
Second aspect provides a kind of control device of the electric expansion valve of indoor unit, is applied to multi-online air-conditioning system, packet
It includes: obtaining module, for if indoor unit is out of service, obtaining the heat exchanger of indoor unit when indoor unit is in heating mode
Inlet temperature and outlet temperature；Inlet temperature is temperature when refrigerant flows into indoor set heat exchanger, and outlet temperature is refrigerant stream
Temperature when indoor set heat exchanger out；Computing module, for obtaining the outlet temperature of module acquisition and the difference of inlet temperature, and
The variation of electric expansion valve is calculated according to difference；Judgment module, for judging whether the difference that computing module calculates is being preset
In temperature range；Module is adjusted, for being adjusted according to variation when judgment module determines difference not in preset temperature range
The aperture of electric expansion valve.
The third aspect provides a kind of control device of indoor unit, and the electronics of the indoor unit including the offer of such as second aspect is swollen
The control device of swollen valve.
Fourth aspect provides a kind of air conditioner, the control device including the indoor unit that such as third aspect provides.
5th aspect, provides a kind of control device of the electric expansion valve of indoor unit, including memory, processor, bus
And communication interface；For storing computer executed instructions, processor is connect with memory by bus memory；When indoor unit
When the control device operation of electric expansion valve, processor executes the computer executed instructions of memory storage, so that indoor unit
The control device of electric expansion valve executes the control method of the electric expansion valve of the indoor unit provided such as first aspect.
6th aspect, provides a kind of computer storage medium, including computer executed instructions, when computer executed instructions exist
When being run on computer, so that computer executes the control method of the electric expansion valve of the indoor unit provided such as first aspect.
Air conditioner provided in an embodiment of the present invention, indoor unit electric expansion valve control method and device, comprising: work as room
When interior machine is in heating mode, if indoor unit is out of service, the inlet temperature and outlet temperature of the heat exchanger of indoor unit are obtained；
Inlet temperature is temperature when refrigerant flows into indoor set heat exchanger, and outlet temperature is temperature when refrigerant flows out indoor set heat exchanger
Degree；The difference of outlet temperature and inlet temperature is calculated, and calculates the variation of electric expansion valve according to difference；Whether judge difference
In preset temperature range；If not in preset temperature range, the aperture of electric expansion valve is adjusted according to variation for difference.This
Inventive embodiments provide a kind of control method of the electric expansion valve of indoor unit, for certain indoor unit in multi-online air-conditioning system
When out of service, changed according to the difference of the inlet temperature of indoor set heat exchanger and outlet temperature swollen to calculate the electronics of indoor unit
The variation of swollen valve, the aperture of the electric expansion valve of indoor unit out of service is adjusted according to the variation, to make to stop transporting
The aperture of the electric expansion valve of capable indoor unit may remain in suitable range, so that indoor unit out of service is corresponding
Outdoor unit compressor will not because of the electric expansion valve of the indoor unit aperture it is too small caused by refrigerant pipe inner compressor
The accumulation of oil and refrigerant and be unable to operate normally, will not because of the electric expansion valve of the indoor unit aperture it is excessive and increase energy
Consumption, so technical solution provided in an embodiment of the present invention can make while guaranteeing air-conditioning system reliability, that is, failsafe
Compressor exports suitable power, saves the energy.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of multi-online air-conditioning system provided in an embodiment of the present invention；
Fig. 2 is a kind of control method flow diagram one of the electric expansion valve of indoor unit provided in an embodiment of the present invention；
Fig. 3 is a kind of indoor machine structure schematic diagram of multi-online air-conditioning system provided in an embodiment of the present invention；
Fig. 4 is a kind of control method flow diagram two of the electric expansion valve of indoor unit provided in an embodiment of the present invention；
Fig. 5 is a kind of control method flow diagram three of the electric expansion valve of indoor unit provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of the control device of the electric expansion valve of indoor unit provided in an embodiment of the present invention；
Fig. 7 is the structural representation of the control device of the electric expansion valve of another indoor unit provided in an embodiment of the present invention
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that in the embodiment of the present invention, " illustrative " or " such as " etc. words make example, example for indicating
Card or explanation.Be described as in the embodiment of the present invention " illustrative " or " such as " any embodiment or design scheme do not answer
It is interpreted than other embodiments or design scheme more preferably or more advantage.Specifically, " illustrative " or " example are used
Such as " word is intended to that related notion is presented in specific ways.
It should also be noted that, in the embodiment of the present invention, " (English: of) ", " corresponding (English:
Corresponding, relevant) " it sometimes can be mixed with " corresponding (English: corresponding) ", it should be pointed out that
It is that, when not emphasizing its difference, meaning to be expressed is consistent.
For the ease of clearly describing the technical solution of the embodiment of the present invention, in an embodiment of the present invention, use " the
One ", the printed words such as " second " distinguish function and the essentially identical identical entry of effect or similar item, and those skilled in the art can
To understand that the printed words such as " first ", " second " are not to be defined to quantity and execution order.
In current multi-online air-conditioning system, when some or multiple indoor units are out of service, the electricity of usual indoor unit
Sub- expansion valve is not closed all, and has reserved small aperture, to ensure that the electric expansion valve of indoor unit will not be because of reserved
Aperture is too small and compressor oil and refrigerant in refrigerant pipe is caused to accumulate, to influence the outdoor unit of multi-online air-conditioning system just
Often operation；Meanwhile if the electric expansion valve of indoor unit it is reserved aperture it is excessive, the compressor output power that will cause outdoor unit increases
Greatly, thus waste of energy.
The embodiment of the present invention provides a kind of control method of the electric expansion valve of indoor unit, applied to as shown in Figure 1 more
Online air-conditioning system, including outdoor unit 01 and indoor units 02.Wherein outdoor unit 01 includes compressor 7, gas-liquid separator
8, four-way valve 9, heat exchanger 10 and electric expansion valve 11, indoor units 02 include multiple indoor units, indoor unit include heat exchanger and
Electric expansion valve, as shown in Figure 1, indoor unit 021 includes heat exchanger 1 and electric expansion valve 4, indoor unit 022 includes 2 He of heat exchanger
Electric expansion valve 5, indoor unit 023 include heat exchanger 3 and electric expansion valve 6.
It is specifically described below for the control method of the electric expansion valve of indoor unit provided in an embodiment of the present invention, it is real
This method can be executed by the master control borad of air conditioner in border, as shown in Fig. 2, this method comprises:
101, when indoor unit is in heating mode, if indoor unit is out of service, obtain the heat exchanger of indoor unit into
Mouth temperature and outlet temperature.
Wherein, temperature when inlet temperature is the heat exchanger of refrigerant inflow indoor unit, outlet temperature are in refrigerant delivery chamber
The temperature when heat exchanger of machine.As shown in figure 3, for the present embodiments relate to the indoor machine structure of multi-online air-conditioning system show
It is intended to, outlet temperature and inlet temperature here can be T shown in Fig. 3outAnd Tin。
Specifically, the indoor unit in present invention implementation is the indoor unit in multi-online air-conditioning system, indoor unit here
It is out of service to can be closing indoor unit, it is in standby indoor unit, is also possible to after room temperature reaches set temperature,
Indoor unit is out of service；The temperature that the set temperature can be set after air-conditioning system operation for remote-controller for air-conditioner.Work as room
When interior machine is out of service, the inlet temperature and outlet temperature of the heat exchanger of indoor unit are obtained.
It should be noted that the control method of the electric expansion valve of indoor unit provided in an embodiment of the present invention is suitable for multi-joint
Control when indoor unit in air conditioner system is out of service, to the electric expansion valve of indoor unit.If indoor unit is still being run,
Electronic expansion of the control method to indoor unit of the electric expansion valve of the indoor unit provided through the embodiment of the present invention is not provided
Valve is controlled.
102, the difference of outlet temperature and inlet temperature is calculated, and calculates the variation of electric expansion valve according to difference.
Specifically, calculating outlet temperature after the outlet temperature and inlet temperature that step 101 obtains the heat exchanger of indoor unit
Subtract the difference of inlet temperature, and according to the difference according to proportional integral differential (proportion integral
Differential, PID) algorithm calculates electric expansion valve and needs the variation that adjusts.
103, judge difference whether in preset temperature range.
Specifically, need to judge this after the outlet temperature for the heat exchanger that indoor unit is calculated and the difference of inlet temperature
Difference does not need the electronic expansion of adjustment indoor unit whether in preset temperature range if the difference is in preset temperature range
The aperture of valve needs to adjust the aperture of the electric expansion valve of indoor unit if the difference is not in preset temperature range.This is default
The aperture of the electric expansion valve of the corresponding indoor unit of temperature range can keep a suitable open range, the electronics of indoor unit
When the aperture of expansion valve is in the open range, the outdoor unit of the corresponding air-conditioning system of the indoor unit can both be made normally to transport
Row, but may insure the air-conditioning system outdoor unit will not because of the electric expansion valve of the indoor unit aperture it is excessive and cause energy
Source waste.
Illustratively, preset temperature range can be 5 DEG C -8 DEG C, if the difference of outlet temperature and inlet temperature be 10 DEG C or
2 DEG C, then difference needs to adjust the aperture of the electric expansion valve of indoor unit not in preset temperature range at this time；If outlet temperature
Difference with inlet temperature is 6 DEG C or 8 DEG C, then difference does not need the electronics of adjustment indoor unit in preset temperature range at this time
The aperture of expansion valve.Above-mentioned preset temperature range is exemplary only, and those skilled in the art can be according to air-conditioning system
Actual use situation is tested to obtain.
If 104, difference is not in preset temperature range, the aperture of electric expansion valve is adjusted according to variation.
Specifically, if step 103 determines that the outlet temperature of the heat exchanger of indoor unit and the difference of inlet temperature are not being preset
In temperature range, then need to adjust the aperture of the electric expansion valve of indoor unit, to the aperture tune of the electric expansion valve of the indoor unit
Whole amount is the variation for the electric expansion valve that step 102 calculates, and the aperture of the electric expansion valve of indoor unit is according to the variation tune
Greatly or turn down.
It is further alternative, as shown in figure 4, step 104 may include 1041-1043, it is specific as follows:
1041, determine electric expansion valve in the aperture at current time.
Specifically, since when indoor unit operates normally holding for electric expansion valve can be adjusted according to the heating needs of indoor unit
Degree, and when indoor unit is out of service, the aperture of the electric expansion valve of indoor unit stops adjustment.At this point, the electronics of indoor unit is swollen
Swollen valve may fully open, it is also possible to completely close.Therefore, when indoor unit is out of service, it is thus necessary to determine that the electronics of indoor unit
Aperture of the expansion valve at current time.
1042, when the aperture at current time is less than default aperture, according to variation by the aperture of electric expansion valve from working as
The aperture at preceding moment is adjusted to the first aperture.
Wherein, the first aperture is greater than the aperture at current time, and the first aperture is greater than or equal to default aperture；Default aperture
For the minimum aperture of electric expansion valve.It is cold when the minimum aperture is that the aperture of the electric expansion valve in order to avoid indoor unit is too small
Compressor oil in matchmaker's pipeline and refrigerant accumulate and lead to that the compressor of outdoor unit of the air conditioner is unable to operate normally and reserved
Certain aperture.The minimum aperture can be 20 pulses or 50 pulses, and the minimum movement amount of electric expansion valve is known as an arteries and veins here
Punching.
Specifically, electric expansion valve only executes valve opening when the aperture at electric expansion valve current time is less than default aperture
Operation increases aperture, and the variation calculated according to step 102 adjusts the aperture of electric expansion valve from the aperture at current time
To the first aperture.It should be noted that if the aperture of electric expansion valve is adjusted to the first aperture, if the first aperture is still less than pre-
If aperture, then the aperture of electric expansion valve is adjusted to default aperture；If the first aperture is greater than default aperture, terminate the electronics
The aperture of expansion valve adjusts.
Illustratively, if the default aperture of the electric expansion valve of indoor unit can be 15 pulses, the aperture at current time is
10 pulses, the variation for the electric expansion valve that step 102 calculates are 6 pulses, then the aperture of the electric expansion valve of indoor unit at this time
It is adjusted by 10 pulses at current time to 16 pulses of the first aperture；If the aperture at current time is 10 pulses, and step 102 is counted
The variation of the electric expansion valve of calculation be 2 pulses, then at this time the aperture of the electric expansion valve of indoor unit by current time 10 arteries and veins
Whole 12 pulses to the first aperture are reconstituted, it, need to be by electricity at this time because the first aperture adjusted is still less than default aperture
The aperture of sub- expansion valve is adjusted to default aperture, i.e. 15 pulses.
1043, when the aperture at current time is greater than default aperture, according to variation by the aperture of electric expansion valve from working as
The aperture at preceding moment is adjusted to the second aperture or third aperture.
Specifically, the aperture of electric expansion valve can when the aperture at the current time of electric expansion valve is greater than default aperture
It tunes up or turns down with the variation of the electric expansion valve calculated according to step 102, if the aperture of electric expansion valve is according to variation
It adjusts to the second aperture or the aperture of electric expansion valve and is adjusted according to variation to third aperture.
Wherein, the second aperture is greater than the aperture at current time, and third aperture is less than the aperture at current time, and third aperture
More than or equal to default aperture.
Optionally, as shown in figure 5, in step 1043 to the adjustment of the aperture of electric expansion valve may include 1043-1 and
1043-2, specific as follows:
If 1043-1, difference are greater than the maximum temperature values in preset temperature range, according to variation by electric expansion valve
Aperture adjust from the aperture at current time to the second aperture.
Specifically, the aperture of the electric expansion valve of indoor unit tunes up or turns down needs according to the interior calculated in step 102
The outlet temperature of the heat exchanger of machine and the difference of inlet temperature and preset temperature range determine, when the heat exchanger of indoor unit
It is cold in the heat exchanger of indoor unit when the difference of outlet temperature and inlet temperature is greater than the maximum temperature values in preset temperature range
The possible storage of matchmaker is more, therefore the aperture needs of the electric expansion valve of indoor unit tune up the refrigerant so that in the heat exchanger of indoor unit
Outflow.
Illustratively, when the difference of the outlet temperature of the heat exchanger of indoor unit and inlet temperature be 10 DEG C, preset temperature model
It encloses when being 5 DEG C -8 DEG C, the aperture of the electric expansion valve of indoor unit is tuned up, when the aperture at the current time of electric expansion valve is 30
Pulse, when the variation of the electric expansion valve of indoor unit is 5 pulse, by the aperture of the electric expansion valve of indoor unit from current time
30 pulses adjust to 35 pulses of the second aperture.
If 1043-2, difference are less than the minimum temperature value in preset temperature range, according to variation by electric expansion valve
Aperture adjust from the aperture at current time to third aperture.
Specifically, when the outlet temperature of the heat exchanger of indoor unit and the difference of inlet temperature are less than in preset temperature range
When minimum temperature value, the possible storage of refrigerant in the heat exchanger of indoor unit is less, therefore the aperture of the electric expansion valve of indoor unit
It can turn down, making it not influences the normal operation of outdoor unit.
Illustratively, when the difference of the outlet temperature of the heat exchanger of indoor unit and inlet temperature be 3 DEG C, preset temperature range
When being 5 DEG C -8 DEG C, the aperture of the electric expansion valve of indoor unit is turned down, when the aperture at the current time of electric expansion valve is 30 arteries and veins
Punching, when the variation of the electric expansion valve of indoor unit is 5 pulse, by the aperture of the electric expansion valve of indoor unit from current time
30 pulses are adjusted to 25 pulses of third aperture.
Certainly, when the aperture of the electric expansion valve of indoor unit is adjusted from the aperture at current time to third aperture, third is opened
Degree should be greater than or be equal to default aperture, if the aperture at the current time of electric expansion valve is 20 pulses, the electronic expansion of indoor unit
The variation of valve is 10 pulses, and presetting aperture is 15 pulses, if the aperture of electric expansion valve is adjusted from the 20 of current time to 10
Pulse, then the aperture of electric expansion valve is less than default aperture at this time.It is opened at this point, the aperture of electric expansion valve should be adjusted to default
Degree, that is, adjust to 15 pulses.
It should be noted that in embodiments of the present invention, indoor unit when out of service, the electric expansion valve of indoor unit
Aperture has optimal value, when as out of service such as indoor unit, if the difference of the outlet temperature of the heat exchanger of indoor unit and inlet temperature is 8
DEG C when, the aperture of electric expansion valve corresponding to the difference of the outlet temperature and inlet temperature can be optimal value at this time.Certainly, should
Optimal value is exemplary only, and those skilled in the art can also obtain the optimal value of other electric expansion valves according to experiment, right
This embodiment of the present invention is not construed as limiting.
The control method of the electric expansion valve of indoor unit provided in an embodiment of the present invention, comprising: when indoor unit is in heating
When mode, if indoor unit is out of service, the inlet temperature and outlet temperature of the heat exchanger of indoor unit are obtained；Inlet temperature is cold
Matchmaker flows into temperature when indoor set heat exchanger, and outlet temperature is temperature when refrigerant flows out indoor set heat exchanger；Calculate outlet temperature
The difference of degree and inlet temperature, and according to the variation of difference calculating electric expansion valve；Judge difference whether in preset temperature model
In enclosing；If not in preset temperature range, the aperture of electric expansion valve is adjusted according to variation for difference.The embodiment of the present invention mentions
For a kind of control method of the electric expansion valve of indoor unit, for when certain indoor unit is out of service in multi-online air-conditioning system,
Changed according to the difference of the inlet temperature of indoor set heat exchanger and outlet temperature to calculate the variation of the electric expansion valve of indoor unit
Amount, the aperture of the electric expansion valve of indoor unit out of service is adjusted according to the variation, to make indoor unit out of service
The aperture of electric expansion valve may remain in suitable range so that the corresponding outdoor unit of indoor unit out of service
Compressor will not because of the electric expansion valve of the indoor unit aperture it is too small caused by refrigerant pipe inner compressor oil and refrigerant
Accumulate and be unable to operate normally, will not because of the electric expansion valve of the indoor unit aperture it is excessive and increase energy consumption, this
The technical solution that inventive embodiments provide can be such that compressor exports while guaranteeing air-conditioning system reliability, that is, failsafe
Suitable power saves the energy.
The embodiment of the present invention also provides a kind of air conditioner, the control device including indoor unit, the control device of the indoor unit
The control device of electric expansion valve including indoor unit.
Illustratively, the control device of indoor unit can be the master control borad of air conditioner, the control of the electric expansion valve of indoor unit
Device processed can be a part of the master control borad.
Optionally, as shown in fig. 6, the control device 20 of the electric expansion valve of indoor unit provided by the embodiments of the present application, packet
It includes: obtaining module 201, computing module 202, judgment module 203 and adjustment module 204.
Module 201 is obtained, for if indoor unit is out of service, obtaining indoor unit when indoor unit is in heating mode
Heat exchanger inlet temperature and outlet temperature.
Wherein, temperature when inlet temperature is the heat exchanger of refrigerant inflow indoor unit, outlet temperature are in refrigerant delivery chamber
The temperature when heat exchanger of machine.
Computing module 202, for calculate obtain module 201 obtain outlet temperature and inlet temperature difference, and according to
The variation of difference calculating electric expansion valve.
Judgment module 203, for judging the difference of the calculating of computing module 202 whether in preset temperature range.
Module 204 is adjusted, is used for when judgment module 203 determines difference not in preset temperature range, according to variation
Adjust the aperture of electric expansion valve.
Optionally, adjustment module 204 is specifically used for:
Determine electric expansion valve in the aperture at current time；
When the aperture at current time is less than default aperture, the variation that is calculated according to computing module 202 is by electronic expansion
The aperture of valve is adjusted from the aperture at current time to the first aperture；
Wherein, the first aperture is greater than the aperture at current time, and the first aperture is greater than or equal to default aperture；Default aperture
For the minimum aperture of electric expansion valve.
When the aperture at current time is greater than default aperture, the variation that is calculated according to computing module 202 is by electronic expansion
The aperture of valve is adjusted from the aperture at current time to the second aperture or third aperture；
Wherein, the second aperture is greater than the aperture at current time, and third aperture is less than the aperture at current time, and third aperture
More than or equal to default aperture.
Optionally, adjustment module 204 also particularly useful for:
When the difference that computing module 202 calculates is greater than the maximum temperature values in preset temperature range, according to computing module
202 variation calculated adjust the aperture of electric expansion valve to the second aperture from the aperture at current time.
When the difference that computing module 202 calculates is less than the minimum temperature value in preset temperature range, according to computing module
202 variation calculated adjust the aperture of electric expansion valve to third aperture from the aperture at current time.
The control device of the electric expansion valve of indoor unit provided in an embodiment of the present invention, because the device includes: acquisition mould
Block, for if indoor unit is out of service, obtaining the inlet temperature of the heat exchanger of indoor unit when indoor unit is in heating mode
And outlet temperature；Inlet temperature is temperature when refrigerant flows into indoor set heat exchanger, and outlet temperature is that refrigerant outflow indoor unit changes
Temperature when hot device；Computing module, for obtaining the outlet temperature of module acquisition and the difference of inlet temperature, and according to difference meter
Calculate the variation of electric expansion valve；Judgment module, for judging the difference of computing module calculating whether in preset temperature range；
Module is adjusted, for adjusting electric expansion valve according to variation when judgment module determines difference not in preset temperature range
Aperture.So the control device of the electric expansion valve of indoor unit provided in an embodiment of the present invention, it can be in multi-gang air-conditioner system
When certain indoor unit is out of service in system, changed according to the difference of the inlet temperature of indoor set heat exchanger and outlet temperature come counting chamber
The variation of the electric expansion valve of interior machine adjusts the aperture of the electric expansion valve of indoor unit out of service according to the variation,
To make the aperture of the electric expansion valve of indoor unit out of service may remain in suitable range, so that out of service
The corresponding outdoor unit of indoor unit compressor will not because of the electric expansion valve of the indoor unit aperture it is too small caused by refrigerant
The accumulation of pipeline inner compressor oil and refrigerant and be unable to operate normally, will not be because of the aperture of the electric expansion valve of the indoor unit
It is excessive and increase energy consumption, thus technical solution provided in an embodiment of the present invention can not go out guaranteeing air-conditioning system reliability therefore
While barrier, compressor is made to export suitable power, saves the energy.
As shown in fig. 7, the embodiment of the present invention also provides the control device of the electric expansion valve of another indoor unit, including deposit
Reservoir 31, processor 32, bus 33 and communication interface 34；Memory 31 for storing computer executed instructions, processor 32 with
Memory 31 is connected by bus 33；When the operation of the control device of the electric expansion valve of indoor unit, processor 32 executes storage
The computer executed instructions that device 31 stores, so that the control device of the electric expansion valve of indoor unit executes above-described embodiment such as and provides
Indoor unit electric expansion valve control method.
In concrete implementation, as one embodiment, processor 32 (32-1 and 32-2) may include one or more
CPU, such as CPU0 shown in fig. 7 and CPU1.And as one embodiment, the control device of the electric expansion valve of indoor unit can
To include multiple processors 32, such as processor 32-1 shown in fig. 7 and processor 32-2.It is each in these processors 32
A CPU can be a single core processor (single-CPU), be also possible to a multi-core processor (multi-CPU).Here
Processor 32 can refer to one or more equipment, circuit, and/or the place for handling data (such as computer program instructions)
Manage core.
Memory 31 can be read-only memory 31 (read-only memory, ROM) or can store static information and refer to
The other kinds of static storage device enabled, random access memory (random access memory, RAM) or can store
The other kinds of dynamic memory of information and instruction, is also possible to Electrically Erasable Programmable Read-Only Memory
(electrically erasable programmable read-only memory, EEPROM), CD-ROM (compact
Disc read-only memory, CD-ROM) or other optical disc storages, optical disc storage (including compression optical disc, laser disc, light
Dish, Digital Versatile Disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storage apparatus or can be used in carry or
Store have instruction or data structure form desired program code and can by any other medium of computer access, but
It is without being limited thereto.Memory 31, which can be, to be individually present, and is connected by bus 33 with processor 32.Memory 31 can also and be located
Reason device 32 integrates.
In concrete implementation, memory 31, for storing the data in the application and executing the software program of the application
Corresponding computer executed instructions.Processor 32 can by running or executing the software program being stored in memory 31, with
And call the various functions of the control device of the electric expansion valve of the data and indoor unit that are stored in memory 31.
Communication interface 34 is used for and other equipment or communication, such as control using the device of any transceiver one kind
System processed, wireless access network (radio access network, RAN), WLAN (wireless local area
Networks, WLAN) etc..Communication interface 34 may include that receiving unit realizes that receive capabilities and transmission unit realize transmission
Function.
It is total to can be industry standard architecture (industry standard architecture, ISA) for bus 33
Line, external equipment interconnection (peripheral component interconnect, PCI) bus or extension Industry Standard Architecture
Structure (extended Industry standard architecture, EISA) bus etc..The bus 33 can be divided into address
Bus, data/address bus, control bus etc..Only to be indicated with a thick line in Fig. 7, it is not intended that only one convenient for indicating
Bus or a type of bus.
The embodiment of the present invention also provides a kind of computer storage medium, and computer storage medium includes that computer execution refers to
It enables, when computer executed instructions are run on computers, so that computer is executed such as indoor unit provided by the above embodiment
The control method of electric expansion valve.
The embodiment of the present invention also provides a kind of computer program, which can be loaded directly into memory, and
Containing software code, which is loaded into via computer and can be realized indoor unit provided by the above embodiment after executing
Electric expansion valve control method.
Those skilled in the art are it will be appreciated that in said one or multiple examples, function described in the invention
It can be realized with hardware, software, firmware or their any combination.It when implemented in software, can be by these functions
Storage in computer-readable medium or as on computer-readable medium one or more instructions or code transmitted.
Computer-readable medium includes computer storage media and communication media, and wherein communication media includes convenient for from a place to another
Any medium of one place transmission computer program.Storage medium can be general or specialized computer can access it is any
Usable medium.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenienct and succinct, only the example of the division of the above functional modules, in practical application, can according to need and will be upper
It states function distribution to be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, to complete
All or part of function described above.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the module or unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation.Such as multiple units or components
It may be combined or can be integrated into another device, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.Unit can be or can also as illustrated by the separation member
Not to be physically separated, component shown as a unit can be a physical unit or multiple physical units, it can
It is in one place, or may be distributed over multiple and different places.Can select according to the actual needs part therein or
Person's whole unit achieves the purpose of the solution of this embodiment.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.If integrated unit with
The form of SFU software functional unit is realized and when sold or used as an independent product, can store and storage Jie can be read at one
In matter.Based on this understanding, the portion that the technical solution of the embodiment of the present application substantially in other words contributes to the prior art
Divide or all or part of the technical solution can be embodied in the form of software products, which is stored in one
In storage medium, including some instructions are used so that an equipment (can be single-chip microcontroller, chip etc.) or processor
(processor) it performs all or part of the steps of the method described in the various embodiments of the present invention.And storage medium above-mentioned includes:
The various media that can store program code such as USB flash disk, mobile hard disk, ROM, RAM, magnetic or disk.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of control method of the electric expansion valve of indoor unit is applied to multi-online air-conditioning system characterized by comprising
When indoor unit is in heating mode, if the indoor unit is out of service, obtain the heat exchanger of the indoor unit into
Mouth temperature and outlet temperature；The inlet temperature is temperature when refrigerant flows into the heat exchanger of the indoor unit, the outlet temperature
Degree is the temperature when refrigerant flows out the heat exchanger of the indoor unit；
The difference of the outlet temperature Yu the inlet temperature is calculated, and calculates the change of the electric expansion valve according to the difference
Momentum；
Judge the difference whether in preset temperature range；
If the difference adjusts opening for the electric expansion valve not in the preset temperature range, according to the variation
Degree.
2. the control method of the electric expansion valve of indoor unit according to claim 1, which is characterized in that if the difference
It is worth not in the preset temperature range, then includes: according to the aperture that the variation adjusts the electric expansion valve
Determine the electric expansion valve in the aperture at current time；
When the aperture at the current time is less than default aperture, according to the variation by the aperture of the electric expansion valve from
The aperture at the current time is adjusted to the first aperture；First aperture is greater than the aperture at the current time, and described the
One aperture is greater than or equal to the default aperture；The default aperture is the minimum aperture of the electric expansion valve；
When the aperture at the current time is greater than the default aperture, according to the variation opening the electric expansion valve
Degree is adjusted from the aperture at the current time to the second aperture or third aperture；Second aperture is greater than the current time
Aperture, the third aperture is less than the aperture at the current time, and the third aperture is greater than or equal to the default aperture.
3. the control method of the electric expansion valve of indoor unit according to claim 2, which is characterized in that described to work as when described
When the aperture at preceding moment is greater than the default aperture, according to the variation by the aperture of the electric expansion valve from described current
The aperture at moment is adjusted to the second aperture or third aperture
If the difference is greater than the maximum temperature values in the preset temperature range, according to the variation that the electronics is swollen
The aperture of swollen valve is adjusted from the aperture at the current time to the second aperture；
If the difference is less than the minimum temperature value in the preset temperature range, according to the variation that the electronics is swollen
The aperture of swollen valve is adjusted from the aperture at the current time to third aperture.
4. a kind of control device of the electric expansion valve of indoor unit is applied to multi-online air-conditioning system characterized by comprising
Module is obtained, for if the indoor unit is out of service, obtaining the indoor unit when indoor unit is in heating mode
Heat exchanger inlet temperature and outlet temperature；The inlet temperature is temperature when refrigerant flows into the heat exchanger of the indoor unit
Degree, the outlet temperature are the temperature when refrigerant flows out the heat exchanger of the indoor unit；
Computing module, for calculating the difference of the outlet temperature and the inlet temperature that the acquisition module obtains, and root
The variation of the electric expansion valve is calculated according to the difference；
Judgment module, for judging the difference of the computing module calculating whether in preset temperature range；
Module is adjusted, for when the judgment module determines the difference not in the preset temperature range, according to described
Variation adjusts the aperture of the electric expansion valve.
5. the control device of the electric expansion valve of indoor unit according to claim 4, which is characterized in that the adjustment module
It is specifically used for:
Determine the electric expansion valve in the aperture at current time；
It, will be described according to the variation that the computing module calculates when the aperture at the current time is less than default aperture
The aperture of electric expansion valve is adjusted from the aperture at the current time to the first aperture；When first aperture is greater than described current
The aperture at quarter, and first aperture is greater than or equal to the default aperture；The default aperture is the electric expansion valve
Minimum aperture；
It, will according to the variation that the computing module calculates when the aperture at the current time is greater than the default aperture
The aperture of the electric expansion valve is adjusted from the aperture at the current time to the second aperture or third aperture；Second aperture
Greater than the aperture at the current time, the third aperture is less than the aperture at the current time, and the third aperture is greater than
Or it is equal to the default aperture.
6. the control device of the electric expansion valve of indoor unit according to claim 5, which is characterized in that the adjustment module
Also particularly useful for:
When the difference that the computing module calculates is greater than the maximum temperature values in the preset temperature range, according to described
The variation that computing module calculates adjusts the aperture of the electric expansion valve to second from the aperture at the current time
Aperture；
When the difference that the computing module calculates is less than the minimum temperature value in the preset temperature range, according to described
The variation that computing module calculates adjusts the aperture of the electric expansion valve to third from the aperture at the current time
Aperture.
7. a kind of control device of indoor unit, including such as the electric expansion valve of the described in any item indoor units of claim 4-6
Control device.
8. a kind of air conditioner, the control device including indoor unit as claimed in claim 7.
9. a kind of control device of the electric expansion valve of indoor unit, which is characterized in that including memory, processor, bus and lead to
Believe interface；For storing computer executed instructions, the processor is connected with the memory by the bus memory
It connects；When the operation of the control device of the electric expansion valve of the indoor unit, the processor executes the institute of the memory storage
Computer executed instructions are stated, so that the control device of the electric expansion valve of the indoor unit is executed such as any one of claim 1-3
The control method of the electric expansion valve of the indoor unit.
10. a kind of computer storage medium, which is characterized in that the computer storage medium includes computer executed instructions, when
When the computer executed instructions are run on computers, so that the computer is executed as described in claim any one of 1-3
Indoor unit electric expansion valve control method.
Priority Applications (1)
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|---|---|---|---|
| CN201910792068.0A CN110500702A (en) | 2019-08-26 | 2019-08-26 | Air conditioner, indoor unit electric expansion valve control method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910792068.0A CN110500702A (en) | 2019-08-26 | 2019-08-26 | Air conditioner, indoor unit electric expansion valve control method and device |
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| CN111520875A (en) * | 2020-03-24 | 2020-08-11 | 青岛海尔空调电子有限公司 | Control method and system for multi-split air conditioner |
| CN112856714A (en) * | 2021-02-19 | 2021-05-28 | 青岛海尔空调器有限总公司 | Refrigerant flow control method and device, electronic equipment and air conditioner |
| CN113375303A (en) * | 2021-05-21 | 2021-09-10 | 青岛海尔空调器有限总公司 | Fresh air conditioner control method and device, electronic equipment and storage medium |
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