CN110068103A - Coolant quantity judgment method and control method - Google Patents
Coolant quantity judgment method and control method Download PDFInfo
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- CN110068103A CN110068103A CN201910356546.3A CN201910356546A CN110068103A CN 110068103 A CN110068103 A CN 110068103A CN 201910356546 A CN201910356546 A CN 201910356546A CN 110068103 A CN110068103 A CN 110068103A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- 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
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
-
- 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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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Coolant quantity judgment method and control method provided by the invention, are related to air-conditioning technical field.The coolant quantity judgment method is applied to air conditioner heat-production system comprising: leaving air temp parameter, interior machine electric expansion valve degree of supercooling parameter and at least two auxiliary judgement parameters in receiving chamber；Wherein, auxiliary judgement parameter is for characterizing the exhaust condition of air conditioner and/or the state of suction condition and/or outer machine electric expansion valve.According to the state of the coolant quantity of indoor leaving air temp parameter, interior machine electric expansion valve degree of supercooling parameter and at least two auxiliary judgement parameter decision air conditioners.According to the whether suitable of multiple parameters comprehensive descision coolant quantity, precision is high, is conducive to the efficiency for improving the debugging of air-conditioner coolant amount, and improve the effect of debugging.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of coolant quantity judgment method and control method.
Background technique
It is developed the debugging stage in air conditioner, the adjustment of coolant quantity generallys use first certain to system setting in the prior art
Coolant quantity, parameters judge whether coolant quantity is suitable after then being run according to unit, bleed off if excessive a part of cold
The mode of refrigerant is perfused in matchmaker again if insufficient.In the process, whether coolant quantity is properly for debugging efficiency debugging result
Influence it is huge.
Summary of the invention
Problems solved by the invention is to solve the problems, such as that coolant quantity judgement precision is not high enough in the prior art.
To solve the above problems, the present invention, which provides a kind of coolant quantity judgment method, is applied to air conditioner heat-production system, it is described
Coolant quantity judgment method includes:
Leaving air temp parameter, interior machine electric expansion valve degree of supercooling parameter and at least two auxiliary judgements ginseng in receiving chamber
Number；Wherein, the auxiliary judgement parameter be used to characterize air conditioner exhaust condition and/or suction condition and/or outer electromechanical son it is swollen
The state of swollen valve；
Sentenced according to the indoor leaving air temp parameter, interior machine electric expansion valve degree of supercooling parameter and at least two auxiliary
Determine the state of the coolant quantity of parameter decision air conditioner.
Coolant quantity judgment method provided in an embodiment of the present invention selects air conditioner heat-production most can indicate coolant quantity not in the process
Canonical parameter (the indoor leaving air temp parameter) combination of foot is multiple to indicate coolant quantity insufficient canonical parameter (indoor leaving air temp
Parameter, auxiliary judgement parameter) whether comprehensive judgement coolant quantity is insufficient, while selecting air conditioner heat-production that can most indicate refrigerant in the process
The insufficient canonical parameter of coolant quantity can be indicated in conjunction with multiple by measuring excessive canonical parameter (interior machine electric expansion valve degree of supercooling parameter)
Whether (indoor leaving air temp parameter, auxiliary judgement parameter) comprehensive judgement coolant quantity is excessive, the side of this multi-parameter comprehensive judgement
Formula precision is high, also, is being conducive to improve the efficiency of air-conditioner coolant amount debugging, and improve the effect of debugging.
Further, described according to indoor leaving air temp parameter and at least two auxiliary judgement parameter decision air conditioners
The step of coolant quantity deficiency include:
When the indoor leaving air temp parameter is in corresponding insufficient section, and interior machine electric expansion valve degree of supercooling is joined
Number, at least two in at least two auxiliary judgement parameters in corresponding insufficient section, determine the air conditioner respectively
Coolant quantity it is insufficient.
Further, the auxiliary judgement parameter is that temperature parameter, pressure parameter, degree of superheat parameter or electric expansion valve are opened
Spend parameter；Wherein, the temperature parameter is used to characterize the delivery temperature of the air conditioner, and the pressure parameter is for characterizing system
Pressure at expulsion perhaps the pressure of inspiration(Pi) degree of superheat parameter for characterizing the compressor air suction degree of superheat or outer machine electronic expansion
The valve degree of superheat；
The coolant quantity judgment method includes:
When the indoor leaving air temp parameter is in corresponding insufficient section, and the interior machine electric expansion valve degree of supercooling ginseng
At least two in several, the described temperature parameter, the pressure parameter, the degree of superheat parameter and the electronic expansion valve opening parameter
It is a respectively in corresponding insufficient section, determine that the coolant quantity of the air conditioner is insufficient.
Further, described to be sentenced according to interior machine electric expansion valve degree of supercooling parameter and at least two auxiliary judgement parameters
The step for determining the coolant quantity excess of air conditioner includes:
When the interior machine electric expansion valve degree of supercooling parameter is in corresponding excessive section, and the indoor leaving air temp
In parameter, at least two auxiliary judgement parameters at least two respectively in corresponding excessive section, determine the air-conditioning
The coolant quantity of device is excessive.
Further, the auxiliary judgement parameter is that temperature parameter, pressure parameter, degree of superheat parameter or electric expansion valve are opened
Spend parameter；Wherein, the temperature parameter is used to characterize the delivery temperature of the air conditioner, and the pressure parameter is for characterizing system
Pressure at expulsion perhaps the pressure of inspiration(Pi) degree of superheat parameter for characterizing the compressor air suction degree of superheat or outer machine electronic expansion
The valve degree of superheat；
The coolant quantity judgment method includes:
When the interior machine electric expansion valve degree of supercooling parameter is in corresponding excessive section, and the indoor leaving air temp ginseng
At least two in several, the described temperature parameter, the pressure parameter, the degree of superheat parameter and the electronic expansion valve opening parameter
It is a respectively in corresponding excessive section, determine that the coolant quantity of the air conditioner is excessive.
Further, the coolant quantity judgment method further include:
When the indoor leaving air temp parameter, the interior machine electric expansion valve degree of supercooling parameter and at least two are described auxiliary
At least four in critical parameter are helped respectively in corresponding interval of acceptance, determines that the coolant quantity of air conditioner is appropriate.
A kind of refrigerant amount control method provided by the invention is applied to air conditioner heat-production automatic control system, the air-conditioning
Device heating automatic control system includes air conditioner and adjusting device for amount of coolant, and the air conditioner includes the passed through for high-pressure fluid
One pipeline and the second pipeline passed through for low-pressure fluid, the adjusting device for amount of coolant include the first fluid reservoir, the second fluid reservoir,
First solenoid valve, second solenoid valve；First fluid reservoir is connect with first solenoid valve, first solenoid valve with it is described
First piping connection, second fluid reservoir are connect with the second solenoid valve, the second solenoid valve and second pipeline
Connection；
The refrigerant amount control method includes:
Judge the coolant quantity of the air conditioner, wherein using described the step of the coolant quantity of the judgement air conditioner
Coolant quantity judgment method；
In the state of coolant quantity excess, the first solenoid valve of control is opened, so that excessive refrigerant imports in the first pipeline
To the first fluid reservoir；
In the state of coolant quantity deficiency, control second solenoid valve is opened, so that the refrigerant in the second fluid reservoir is directed into
Second pipeline.
Further, in the state of coolant quantity excess, the first solenoid valve of control is opened, so that excessive in the first pipeline
Refrigerant was directed into after the step of the first fluid reservoir, refrigerant amount control method further include:
Receive the first liquid storage amount data of the first fluid reservoir；
The first solenoid valve is controlled in the state that the first liquid storage amount data are greater than the first preset value to close.
Further, it is default to be greater than first in the first liquid storage amount data for the first liquid storage amount data for receiving the first fluid reservoir
After controlling the step of the first solenoid valve is closed in the state of value, refrigerant amount control method further include:
The step of continuing to execute the coolant quantity of the judgement air conditioner.
Further, in the state of coolant quantity deficiency, control second solenoid valve is opened, so that cold in the second fluid reservoir
Matchmaker was directed into after the step of the second pipeline, refrigerant amount control method further include:
Receive the second liquid storage amount data of the second fluid reservoir；
Second solenoid valve is controlled in the state that the second liquid storage amount data are less than the second preset value to close.
Further, the second liquid storage amount data for receiving the first fluid reservoir, it is default less than second in the second liquid storage amount data
After controlling the step of second solenoid valve is closed in the state of value, refrigerant amount control method further include:
The step of continuing to execute the coolant quantity of the judgement air conditioner.
Detailed description of the invention
Fig. 1 is coolant quantity judgment method flow diagram described in the specific embodiment of the invention.
Fig. 2 is the flow diagram of the sub-step of coolant quantity judgment method described in the specific embodiment of the invention.
Fig. 3 is that air conditioner heat-production applied by refrigerant amount control method described in the specific embodiment of the invention automatically controls system
The structural block diagram of system.
Fig. 4 is the flow diagram of refrigerant amount control method described in the specific embodiment of the invention.
Description of symbols:
100- air conditioner heat-production automatic control system；110- air conditioner；The outer machine of 112-；Machine in 113-；The first pipeline of 114-；
The second pipeline of 115-；120- adjusting device for amount of coolant；The first fluid reservoir of 121-；The second fluid reservoir of 122-；The first solenoid valve of 123-；
124- second solenoid valve.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Fig. 1 is coolant quantity judgment method flow diagram described in the present embodiment.Fig. 2 is that coolant quantity described in the present embodiment is sentenced
The flow diagram of the sub-step of disconnected method.Incorporated by reference to referring to Figures 1 and 2, present embodiments providing a kind of coolant quantity judgment method,
Which are mainly applied to air conditioner heat-production systems, also, are applied to air conditioner debugging.In the debugging process of air conditioner, need more
The state of secondary continuous judgement coolant quantity, air-conditioner coolant amount is excessive, insufficient still just suitable, after being related to air conditioner factory
Use quality.Since debugging process is different from the state of coolant quantity in air conditioner use process, it is difficult directly to pass through letter
Single parameter judges to determine the state of coolant quantity.
Coolant quantity judgment method provided in this embodiment is a kind of method of multi-parameter comprehensive judgement, can accurately be reacted
The coolant quantity state of air conditioner, the coolant quantity judgment method the following steps are included:
Step S110: leaving air temp parameter, interior machine electric expansion valve degree of supercooling parameter and at least two are auxiliary in receiving chamber
Help critical parameter；Wherein, auxiliary judgement parameter is used to characterize the exhaust condition, suction condition and outer machine electronic expansion of air conditioner
The middle one or more of the state of valve.
Wherein, indoor leaving air temp parameter is as the judgement insufficient call parameter of air-conditioner coolant amount, interior machine electronic expansion
Valve degree of supercooling parameter is as the call parameter for determining that air-conditioner coolant amount comes, remaining indoor leaving air temp parameter, interior electromechanics
Sub- expansion valve degree of supercooling parameter and at least two auxiliary judgement parameters are as air-conditioner coolant amount deficiency and excessive synthesis
Evaluation parameter.
It is understood that this mode is directed to the side that coolant quantity deficiency and the excessive two kinds of situations of refrigerant judge respectively respectively
Formula can be improved the precision of judgement.
It should be noted that auxiliary judgement parameter can be temperature parameter, pressure parameter, degree of superheat ginseng in the present embodiment
Several or electronic expansion valve opening parameter.Wherein, temperature parameter is used to characterize the delivery temperature of air conditioner, and pressure parameter is for characterizing
Perhaps pressure of inspiration(Pi) degree of superheat parameter is used to characterize the compressor air suction degree of superheat or outer machine electronic expansion the pressure at expulsion of system
The valve degree of superheat.
Optionally, referring to figure 2., step S110 may include following sub-step:
Step S112: leaving air temp parameter in receiving chamber.
Step S113: temperature parameter is received, wherein temperature parameter includes delivery temperature parameter and/or discharge superheat ginseng
Number.
Step S114: pressure parameter is received, wherein pressure parameter includes system discharge pressure parameter and/or system suction
Pressure parameter.
Step S115: receive degree of superheat parameter, wherein degree of superheat parameter include compressor air suction degree of superheat parameter and/or
Outer machine electric expansion valve degree of superheat parameter.
Step S116: outer machine electronic expansion valve opening parameter is received.
Step S117: machine electric expansion valve degree of supercooling parameter in receiving.
It should be appreciated that step S112 to step S117 does not indicate that sequencing, multiple sub-steps can carry out simultaneously,
It can successively or random progress.Furthermore, it is desirable to which, it is noted that two can be selected simultaneously in same group of critical parameter
Parameter, or select one of them.Such as in temperature parameter, delivery temperature parameter and discharge superheat can be selected to join simultaneously
Number can also only select delivery temperature parameter or discharge superheat parameter.
Also, (7 DEG C/6 DEG C of outside, 20 DEG C/15 DEG C of inside), compressor frequency range 65% under national standard heating condition
~75% (preferably 70%), the acceptability limit of above-mentioned each parameter are as follows:
1. 70 DEG C~80 DEG C of delivery temperature (preferably 75 DEG C)；25 DEG C~35 DEG C of discharge superheat range (preferably 30 DEG C)；
2. system discharge pressure range 2.8Mpa~3.2Mpa (preferably 2.85Mpa)；System suction pressure limit 0.6Mpa
~0.8Mpa (preferably 0.7Mpa)；
3. 3 DEG C~6 DEG C of the excessive range of compressor air suction (preferably 4 DEG C), 3 DEG C~6 DEG C of the outer machine electric expansion valve degree of superheat are (excellent
Select 4 DEG C)；
4. outer machine electronic expansion valve opening range 120pls~200pls (preferably 150pls)；
5. 4 DEG C~6 DEG C of interior machine electric expansion valve degree of supercooling (preferably 5 DEG C)；
6. 45 DEG C~50 DEG C of leaving air temp (preferably 48 DEG C) in heating chamber.
When system coolant quantity deficiency, the corresponding insufficient section of above-mentioned each parameter is as follows:
1. delivery temperature is greater than 80 DEG C；Discharge superheat is greater than 35 DEG C；
2. system discharge pressure is less than 2.8Mpa；System suction pressure is less than 0.6Mpa；
3. compressor air suction is excessively greater than 6 DEG C, the outer machine electric expansion valve degree of superheat is greater than 6 DEG C；
4. outer machine electronic expansion valve opening is greater than 200pls；
5. interior machine electric expansion valve degree of supercooling is less than 4 DEG C；
6. leaving air temp is less than 45 DEG C in heating chamber.
When system coolant quantity excess, the corresponding excessive section of above-mentioned each parameter is as follows:
1. delivery temperature is less than 70 DEG C；Discharge superheat is less than 25 DEG C；
2. system discharge pressure is greater than 3.2Mpa；System suction pressure is greater than 0.8Mpa；
3. compressor air suction is excessively less than 3 DEG C, the outer machine electric expansion valve degree of superheat is less than 3 DEG C；
4. outer machine electronic expansion valve opening is less than 120pls；
5. interior machine electric expansion valve degree of supercooling is greater than 6 DEG C；
6. leaving air temp is greater than 50 DEG C in heating chamber.
Inventors have found that coolant quantity is insufficient, and the susceptibility of indoor leaving air temp parameter is most during air conditioner heat-production
Height, coolant quantity is excessive, interior machine electric expansion valve degree of supercooling Parameter sensitivity highest, therefore, in the present embodiment, interior is gone out wind-warm syndrome
Parameter is spent as the insufficient call parameter of air-conditioner coolant amount is determined, interior machine electric expansion valve degree of supercooling parameter is as judgement air-conditioning
The insufficient call parameter of device coolant quantity.
Coolant quantity judgment method is further comprising the steps of:
Step S120: according to indoor leaving air temp parameter, interior machine electric expansion valve degree of supercooling parameter and at least two auxiliary
Critical parameter determines the state of the coolant quantity of air conditioner.
In the present embodiment, step S120 includes:
Step S121: when indoor leaving air temp parameter is in corresponding insufficient section, and interior machine electric expansion valve is subcooled
Parameter, at least two at least two auxiliary judgement parameters are spent respectively in corresponding insufficient section, determine the cold of air conditioner
Matchmaker measures insufficient.
It is also just says, when indoor leaving air temp parameter is in corresponding deficiency section, and interior machine electric expansion valve degree of supercooling
In parameter, temperature parameter, pressure parameter, degree of superheat parameter and electronic expansion valve opening parameter at least two respectively corresponding
In insufficient section, determine that the coolant quantity of air conditioner is insufficient.
Specifically, when indoor leaving air temp parameter is in corresponding insufficient section, and delivery temperature parameter and/or it was vented
Temperature parameter, pressure parameter include system discharge pressure parameter and/or system suction pressure parameter, compressor air suction degree of superheat ginseng
Several and/or outer machine electric expansion valve degree of superheat parameter, outer machine electronic expansion valve opening parameter and the supercooling of interior machine electric expansion valve
At least two in parameter are spent respectively in corresponding insufficient section, determine that the coolant quantity of air conditioner is insufficient.
While using indoor leaving air temp parameter, interior machine electric expansion valve degree of supercooling parameter, auxiliary judgement ginseng are selected
Number synthesis determines the insufficient situation of coolant quantity, can be improved judgement precision.
It should be appreciated that auxiliary judgement parameter can also select other parameters in other alternative embodiments.
Step S122: when interior machine electric expansion valve degree of supercooling parameter is in corresponding excessive section, and it is indoor go out wind-warm syndrome
Parameter, at least two at least two auxiliary judgement parameters are spent respectively in corresponding excessive section, determine the cold of air conditioner
Matchmaker measures excessive.
It is also just says, when interior machine electric expansion valve degree of supercooling parameter is in corresponding excessive section, and interior leaving air temp
In parameter, temperature parameter, pressure parameter, degree of superheat parameter and electronic expansion valve opening parameter at least two respectively corresponding
In excessive section, determine that the coolant quantity of air conditioner is excessive.
Specifically, when interior machine electric expansion valve degree of supercooling parameter is in corresponding excessive section, and delivery temperature parameter and/
Or discharge superheat parameter, pressure parameter include system discharge pressure parameter and/or system suction pressure parameter, compressor air suction
Degree of superheat parameter and/or outer machine electric expansion valve degree of superheat parameter, outer machine electronic expansion valve opening parameter and indoor wind-warm syndrome out
At least two in parameter are spent respectively in corresponding excessive section, determine that the coolant quantity of air conditioner is excessive.
While using interior machine electric expansion valve degree of supercooling parameter, indoor leaving air temp parameter, auxiliary judgement ginseng are selected
Number synthesis determines the insufficient situation of coolant quantity, can be improved judgement precision.
Step S123: when indoor leaving air temp parameter, interior machine electric expansion valve degree of supercooling parameter and at least two auxiliary
In critical parameter at least four respectively in corresponding interval of acceptance, determine that the coolant quantity of air conditioner is appropriate.
It is also just to say, when indoor leaving air temp parameter, interior machine electric expansion valve degree of supercooling parameter, temperature parameter, pressure ginseng
In number, degree of superheat parameter and electronic expansion valve opening parameter at least four respectively in corresponding interval of acceptance, determine air-conditioning
The coolant quantity of device is appropriate.
Specifically, when indoor leaving air temp parameter, delivery temperature parameter and/or discharge superheat parameter, pressure parameter packet
Include system discharge pressure parameter and/or system suction pressure parameter, compressor air suction degree of superheat parameter and/or outer machine electronic expansion
At least four points in valve degree of superheat parameter, outer machine electronic expansion valve opening parameter and interior machine electric expansion valve degree of supercooling parameter
Not in corresponding interval of acceptance, determine that the coolant quantity of air conditioner is appropriate.
It should be noted that step S120, step S130 and step S140 do not distinguish sequencing in the present embodiment.
It is understood that coolant quantity judgment method provided in this embodiment, selects air conditioner heat-production that can most refer in the process
Showing that the insufficient canonical parameter of coolant quantity (indoor leaving air temp parameter) combination is multiple can indicate that the insufficient canonical parameter of coolant quantity is (interior
Machine electric expansion valve degree of supercooling parameter, auxiliary judgement parameter) whether comprehensive judgement coolant quantity is insufficient, while selecting air conditioner heat-production
It can most indicate that the excessive canonical parameter of coolant quantity (interior machine electric expansion valve degree of supercooling parameter) combines multiple energy instructions cold in the process
Whether excessively matchmaker measures insufficient canonical parameter (indoor leaving air temp parameter, auxiliary judgement parameter) comprehensive judgement coolant quantity, this
The mode precision of multi-parameter comprehensive judgement is high, also, is being conducive to improve the efficiency of air-conditioner coolant amount debugging, and improve debugging
Effect.
Fig. 3 is air conditioner heat-production automatic control system 100 applied by refrigerant amount control method described in the present embodiment
Structural block diagram.Fig. 4 is the flow diagram of refrigerant amount control method described in the present embodiment.Referring to figure 3., the present embodiment also provides
A kind of refrigerant amount control method is applied to air conditioner heat-production automatic control system 100.
The air conditioner heat-production automatic control system 100 includes air conditioner 110 and adjusting device for amount of coolant 120.Wherein, refrigerant
Quantity regulating device 120 is used to debug the stage in air conditioner 110, refrigerant input or output is carried out to air conditioner 110, to adjust sky
Adjust the coolant quantity in device 110.
It should be noted that the air conditioner 110 can be machine, single outer air conditioner device in multi-connected machine or common list.And
And, it should be understood that the refrigerant amount control method includes but is not limited to the application to debugging and the air conditioner in the factory stage of air conditioner 110
The debugging of 110 service stages.
Optionally, in the present embodiment, air conditioner 110 includes outer machine 112 and multiple interior machines 113, outer machine 112 and multiple interior machines
Pass through multiple piping connections between 113, it is to be understood that these pipelines include the first pipeline 114 passed through for high-pressure fluid
With the second pipeline 115 passed through for low-pressure fluid.
Adjusting device for amount of coolant 120 includes the first fluid reservoir 121, the second fluid reservoir 122, first the 123, second electricity of solenoid valve
Magnet valve 124.First fluid reservoir 121 is connect with the first solenoid valve 123, and the first solenoid valve 123 is connect with the first pipeline 114, and second
Fluid reservoir 122 is connect with second solenoid valve 124, and second solenoid valve 124 is connect with the second pipeline 115.
It is understood that the controller of air conditioner 110 can be realized by controlling the unlatching of the first solenoid valve 123 to sky
The discharge of the excessive refrigerant of device 110 is adjusted, and realizes the injection to 110 refrigerant of air conditioner by the unlatching of control second solenoid valve 124.
It is worth noting that, can be connected to by check valve between the first fluid reservoir 121 and the second fluid reservoir 122, so that
The refrigerant of entire air conditioner heat-production automatic control system 100 forms circulation.
The refrigerant amount control method the following steps are included:
Step S210: judge the coolant quantity of air conditioner 110.
It should be noted that step S210 can use above-mentioned coolant quantity judgment method in the present embodiment.
That is, the refrigerant situation of air conditioner 110 is determined using coolant quantity judgment method first in the present embodiment, it is empty
It is excessive, insufficient or appropriate for adjusting the refrigerant of device 110.
Step S221: in the state of coolant quantity excess, the first solenoid valve 123 of control is opened, so that in the first pipeline 114
Excessive refrigerant is directed into the first fluid reservoir 121.
Step S231: in the state of coolant quantity deficiency, control second solenoid valve 124 is opened, so that the second fluid reservoir 122
In refrigerant be directed into the second pipeline 115.
It should be appreciated that in order to enable air conditioner heat-production automatic control system 100 to be automatically performed the best of coolant quantity debugging
Effect, in the present embodiment, after step S221, the refrigerant amount control method further include:
Step S222: the first liquid storage amount data of the first fluid reservoir 121 are received.
Step S223: the first solenoid valve 123 is controlled in the state that the first liquid storage amount data are greater than the first preset value and is closed.
The step of should be appreciated that after closing the first solenoid valve 123, the coolant quantity for judging air conditioner 110 should be continued to execute.
Likewise, after step S231, the refrigerant amount control method further include:
Step S232: the second liquid storage amount data of the second fluid reservoir 122 are received.
Step S233: second solenoid valve 124 is controlled in the state that the second liquid storage amount data are less than the second preset value and is closed.
The step of should be appreciated that after closing second solenoid valve 124, continuing to execute the coolant quantity for judging air conditioner 110.
The refrigerant amount control method further include:
Step S240: it in the state that coolant quantity is appropriate, exits.
That is, terminating to debug when the coolant quantity for determining air conditioner 110 is appropriate.
It is understood that refrigerant amount control method provided in this embodiment makes due to using the coolant quantity judgment method
The precision for obtaining coolant quantity debugging is higher, and can reach preferable debugging effect.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (11)
1. a kind of coolant quantity judgment method is applied to air conditioner heat-production system, which is characterized in that the coolant quantity judgment method packet
It includes:
Leaving air temp parameter, interior machine electric expansion valve degree of supercooling parameter and at least two auxiliary judgement parameters in receiving chamber；Its
In, the auxiliary judgement parameter is used to characterizing the exhaust condition and/or suction condition and/or outer machine electric expansion valve of air conditioner
State；
According to the indoor leaving air temp parameter, interior machine electric expansion valve degree of supercooling parameter and at least two auxiliary judgement ginsengs
Number determines the state of the coolant quantity of air conditioner.
2. coolant quantity judgment method as described in claim 1, which is characterized in that it is described according to indoor leaving air temp parameter, it is interior
The step of the state of the coolant quantity of machine electric expansion valve degree of supercooling parameter and at least two auxiliary judgement parameter decision air conditioners
Suddenly include:
When the indoor leaving air temp parameter is in corresponding insufficient section, and interior machine electric expansion valve degree of supercooling parameter, extremely
At least two in two auxiliary judgement parameters determine the refrigerant of the air conditioner respectively in corresponding insufficient section less
Amount is insufficient.
3. coolant quantity judgment method as claimed in claim 2, which is characterized in that
The auxiliary judgement parameter is temperature parameter, pressure parameter, degree of superheat parameter or electronic expansion valve opening parameter；Wherein,
The temperature parameter is used to characterize the delivery temperature of the air conditioner, the pressure parameter be used to characterize system pressure at expulsion or
Person's pressure of inspiration(Pi), the degree of superheat parameter is for characterizing the compressor air suction degree of superheat or the outer machine electric expansion valve degree of superheat；
The coolant quantity judgment method includes:
When the indoor leaving air temp parameter is in corresponding insufficient section, and the interior machine electric expansion valve degree of supercooling parameter,
At least two in the temperature parameter, the pressure parameter, the degree of superheat parameter and the electronic expansion valve opening parameter
Respectively in corresponding insufficient section, determine that the coolant quantity of the air conditioner is insufficient.
4. coolant quantity judgment method as described in claim 1, which is characterized in that described to be joined according to the indoor leaving air temp
The state of the coolant quantity of several, interior machine electric expansion valve degree of supercooling parameter and at least two auxiliary judgement parameter decision air conditioners
The step of air conditioner includes:
When the interior machine electric expansion valve degree of supercooling parameter is in corresponding excessive section, and the indoor leaving air temp ginseng
Number, at least two in at least two auxiliary judgement parameters in corresponding excessive section, determine the air conditioner respectively
Coolant quantity it is excessive.
5. coolant quantity judgment method as claimed in claim 4, which is characterized in that the auxiliary judgement parameter be temperature parameter,
Pressure parameter, degree of superheat parameter or electronic expansion valve opening parameter；Wherein, the temperature parameter is for characterizing the air conditioner
Delivery temperature, the pressure parameter are used to characterize the pressure at expulsion or pressure of inspiration(Pi) of system, and the degree of superheat parameter is used for table
Levy the compressor air suction degree of superheat or the outer machine electric expansion valve degree of superheat；
The coolant quantity judgment method includes:
When the interior machine electric expansion valve degree of supercooling parameter is in corresponding excessive section, and the indoor leaving air temp parameter,
At least two in the temperature parameter, the pressure parameter, the degree of superheat parameter and the electronic expansion valve opening parameter
Respectively in corresponding excessive section, determine that the coolant quantity of the air conditioner is excessive.
6. coolant quantity judgment method as described in claim 1, which is characterized in that the coolant quantity judgment method further include:
When the indoor leaving air temp parameter, the interior machine electric expansion valve degree of supercooling parameter and at least two auxiliary are sentenced
At least four in parameter are determined respectively in corresponding interval of acceptance, determine that the coolant quantity of air conditioner is appropriate.
7. a kind of refrigerant amount control method is applied to air conditioner heat-production automatic control system (100), which is characterized in that the sky
Adjusting device heating automatic control system (100) includes air conditioner (110) and adjusting device for amount of coolant (120), the air conditioner (110)
Including the first pipeline (114) passed through for high-pressure fluid and the second pipeline (115) passed through for low-pressure fluid, the coolant quantity tune
Regulating device (120) includes the first fluid reservoir (121), the second fluid reservoir (122), the first solenoid valve (123), second solenoid valve
(124)；First fluid reservoir (121) connect with first solenoid valve (123), first solenoid valve (123) with it is described
First pipeline (114) connection, second fluid reservoir (122) connect with the second solenoid valve (124), the second solenoid valve
(124) it is connect with second pipeline (115)；
The refrigerant amount control method includes:
Judge the coolant quantity of the air conditioner (110), wherein the step of coolant quantity of the judgement air conditioner (110) adopts
With coolant quantity judgment method as claimed in any one of claims 1 to 6；
In the state of coolant quantity excess, control the first solenoid valve (123) is opened, so that excessive cold in the first pipeline (114)
Matchmaker is directed into the first fluid reservoir (121)；
In the state of coolant quantity deficiency, control second solenoid valve (124) is opened, so that the refrigerant in the second fluid reservoir (122)
It is directed into the second pipeline (115).
8. refrigerant amount control method as claimed in claim 7, which is characterized in that in the state of coolant quantity excess, control the
One solenoid valve (123) open so that the step of excessive refrigerant is directed into the first fluid reservoir (121) in the first pipeline (114) it
Afterwards, refrigerant amount control method further include:
Receive the first liquid storage amount data of the first fluid reservoir (121)；
The first solenoid valve (123) are controlled in the state that the first liquid storage amount data are greater than the first preset value to close.
9. refrigerant amount control method according to claim 8, which is characterized in that receive the first of the first fluid reservoir (121)
Liquid storage amount data control the step of the first solenoid valve (123) closing in the state that the first liquid storage amount data are greater than the first preset value
After rapid, refrigerant amount control method further include:
The step of continuing to execute the coolant quantity of the judgement air conditioner (110).
10. refrigerant amount control method according to claim 7, which is characterized in that in the state of coolant quantity deficiency, control
Second solenoid valve (124) is opened, so that after the step of refrigerant in the second fluid reservoir (122) is directed into the second pipeline (115),
Refrigerant amount control method further include:
Receive the second liquid storage amount data of the second fluid reservoir (122)；
Second solenoid valve (124) are controlled in the state that the second liquid storage amount data are less than the second preset value to close.
11. refrigerant amount control method according to claim 10, which is characterized in that receive the of the first fluid reservoir (121)
Two liquid storage amount data control second solenoid valve (124) closing in the state that the second liquid storage amount data are less than the second preset value
After step, refrigerant amount control method further include:
The step of continuing to execute the coolant quantity of the judgement air conditioner (110).
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