CN110068102A - Refrigerant amount control method - Google Patents
Refrigerant amount control method Download PDFInfo
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- CN110068102A CN110068102A CN201910356540.6A CN201910356540A CN110068102A CN 110068102 A CN110068102 A CN 110068102A CN 201910356540 A CN201910356540 A CN 201910356540A CN 110068102 A CN110068102 A CN 110068102A
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- coolant quantity
- control method
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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
-
- 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
- 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
- F24F11/85—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 variable-flow pumps
-
- 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
-
- 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
- F24F2140/50—Load
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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)
- Air Conditioning Control Device (AREA)
Abstract
Refrigerant amount control method provided by the invention, is related to air-conditioning technical field.The refrigerant amount control method is applied to air conditioner refrigeration automatic debugging system, and air conditioner refrigeration automatic debugging system includes air conditioner and cold medium regulator, and one end of interior machine is connect with four-way valve by low pressure line, and the other end is connect with heat exchanger by pressure duct.The tapping tank of cold medium regulator is connect with the first solenoid valve, and the first solenoid valve is connect with pressure duct, and liquid feeding tank is connect with second solenoid valve, and second solenoid valve is connect with low pressure line.Refrigerant amount control method includes: to judge the state of air-conditioner coolant amount；In the state that coolant quantity is excessive, the first solenoid valve of control is opened, so that refrigerant excessive in pressure duct is directed into tapping tank；In the state of coolant quantity deficiency, control second solenoid valve is opened, so that the refrigerant in liquid feeding tank is directed into low pressure line.Coolant quantity can efficiently and safely be adjusted using the refrigerant amount control method.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of refrigerant amount control method.
Background technique
Usual air conditioner includes outdoor unit and the indoor unit that connect respectively with the outdoor unit, and rank is debugged in air conditioner
Section, manpower, the engineering of time when the control of coolant quantity always more expends.How efficiently and safely to adjust coolant quantity is urgently
Technical problem to be solved.
Summary of the invention
Problems solved by the invention is how efficiently and safely to adjust coolant quantity.
To solve the above problems, the present invention provides a kind of refrigerant amount control method, it is applied to the automatic debugging of air conditioner refrigeration
System, air conditioner refrigeration automatic debugging system include air conditioner and cold medium regulator, the air conditioner include outer machine and
Interior machine, the outer machine include connected four-way valve and heat exchanger, and one end of the interior machine and the four-way valve pass through low pressure line
Connection, the other end are connect with heat exchanger by pressure duct；The cold medium regulator includes tapping tank, liquid feeding tank, the first electricity
Magnet valve, second solenoid valve；The tapping tank is connect with first solenoid valve, and first solenoid valve and the pressure duct connect
It connects, the liquid feeding tank is connect with the second solenoid valve, and the second solenoid valve is connect with the low pressure line；
The refrigerant amount control method includes:
The state of the air-conditioner coolant amount is judged；
In the state that coolant quantity is excessive, controls first solenoid valve and open, so that in the pressure duct excessively
Refrigerant is directed into the tapping tank；
In the state of coolant quantity deficiency, controls the second solenoid valve and open, so that the refrigerant in the liquid feeding tank is led
Enter to the low pressure line.
By judging the state of coolant quantity, individually controls the first solenoid valve and open, refrigerant excessive in pressure duct is led
Enter tapping tank, or be individually controlled second solenoid valve unlatching, the refrigerant in liquid feeding tank is directed into low pressure line, overall process
For intelligent operation, security performance is high, and can increase substantially adjusting efficiency.
Further, the step of coolant quantity to the air conditioner judges include:
It receives first and judge that the factor second judges the factor at least one；Wherein, first judges that the factor includes system exhaust
At least one of pressure and system suction pressure, at least one described second judges that the factor includes delivery temperature, compressor mistake
At least one of temperature, the degree of superheat of electric expansion valve, electronic expansion valve opening and system degree of supercooling；
According to described first judge the factor and at least one described second judge that the factor judges the state of the coolant quantity.
Using first judge the factor and at least one second judge that the factor judges coolant quantity state by the way of, accuracy is high,
The efficiency of debugging can be effectively improved, and improves debugging effect.
Further, it is described according to described first judge the factor and at least one described second to judge that the factor judges described cold
Matchmaker amount state the step of include:
The factor is judged in corresponding acceptability limit when described first, alternatively, each described second judges the factor each
In self-corresponding acceptability limit, determine that the coolant quantity of the air conditioner is appropriate.
Further, it is described according to described first judge the factor and at least one described second to judge that the factor judges described cold
Matchmaker amount state the step of include:
When described first judges the factor in corresponding insufficient range, and at least one described second judges the factor respective
In corresponding deficiency range, determine that the coolant quantity of the air conditioner is insufficient.
Whether not factor auxiliary judgement coolant quantity is judged under the premise of the judgement that first judges the factor, then through at least one
Foot, can be improved the accuracy of judgement.
Further, it is described according to described first judge the factor and at least one described second to judge that the factor judges described cold
Matchmaker amount state the step of include:
Judge that the factor is crossed in multiregion corresponding when described first, and at least one described second judges the factor respective
It is corresponding to cross in multiregion, determine that the coolant quantity of the air conditioner is excessive.
Under the premise of the judgement that first judges the factor, then by least one judge factor auxiliary judgement coolant quantity whether mistake
Amount, can be improved the accuracy of judgement.
Further, described in the state that coolant quantity is excessive, it controls first solenoid valve and opens, so that the high pressure
Excessive refrigerant was directed into after the step of tapping tank in pipeline, the refrigerant amount control method further include:
In the state that coolant quantity is excessive, the first liquid storage amount data of the tapping tank are received；
First solenoid valve is controlled in the state that the first liquid storage amount data are greater than the first preset value to close.
Being judged coolant quantity and discharged step by step, can be improved debugging efficiency, and guarantee adjustment accuracy.
Further, the first liquid storage amount data for receiving the tapping tank, are greater than in the first liquid storage amount data
After controlling the step of first solenoid valve is closed in the state of first preset value, the refrigerant amount control method further include:
Continue to execute the step of state to the air-conditioner coolant amount judges.
Further, described in the state of coolant quantity deficiency, it controls the second solenoid valve and opens, so that the liquid feeding
After the step of refrigerant in tank is directed into the low pressure line, the refrigerant amount control method further include:
In the state of coolant quantity deficiency, the second liquid storage amount data of the tapping tank are received；
The second solenoid valve is controlled in the state that the second liquid storage amount data are less than the second preset value to close.
Being judged coolant quantity and added step by step, can be improved debugging efficiency, and guarantee adjustment accuracy.
Further, the second liquid storage amount data for receiving the tapping tank, are less than in the second liquid storage amount data
After controlling the step of second solenoid valve is closed in the state of second preset value, the refrigerant amount control method further include:
Continue to execute the step of state to the air-conditioner coolant amount judges.
Further, the cold medium regulator further includes fluid filling pump, and the liquid feeding tank and the tapping tank pass through unidirectionally
Valve connection, the fluid filling pump are set between the liquid feeding tank and the tapping tank；The refrigerant amount control method further include:
Receive the first pressure data of the tapping tank；
Receive the second pressure data of the liquid feeding tank；
The fluid filling pump is controlled when the first pressure data are greater than the first rated value to open；
The fluid filling pump is controlled when the second pressure data are less than the second rated value to open.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the refrigeration automatic debugging system of air conditioner described in the specific embodiment of the invention.
Fig. 2 is the flow diagram of refrigerant amount control method described in the specific embodiment of the invention.
Fig. 3 is flow chart element the step of judgement described in the specific embodiment of the invention the state of air-conditioner coolant amount
Figure.
Description of symbols:
100- air conditioner refrigeration automatic debugging system；110- air conditioner；The outer machine of 112-；1121- four-way valve；1122- heat exchange
Device；Machine in 113-；114- low pressure line；115- pressure duct；120- cold medium regulator；121- tapping tank；122- liquid feeding tank；
The first solenoid valve of 123-；124- second solenoid valve；125- fluid filling pump.
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 the structural schematic diagram of the refrigeration automatic debugging system 100 of air conditioner described in the present embodiment.Fig. 2 is this implementation
The flow diagram of refrigerant amount control method described in example.Incorporated by reference to referring to Figures 1 and 2, present embodiments providing a kind of coolant quantity
The refrigeration automatic debugging system 100 of air conditioner applied by control method and the refrigerant amount control method.
Air conditioner refrigeration automatic debugging system 100 includes air conditioner 110 and cold medium regulator 120.Wherein, refrigerant tune
Regulating device 120 is for being adjusted the flow of 110 refrigerant of air conditioner in the 110 debugging stage of air conditioner.
It should be noted that air conditioner 110 can be multi-connected machine, it is empty to be also possible to common single indoor unit, single outdoor unit
Adjust device.
Optionally, which includes outer machine 112 and multiple interior machines 113.Multiple interior machines 113 connect with outer machine 112 respectively
It connects.
Outer machine 112 includes connected four-way valve 1121 and heat exchanger 1122, one end and the four-way valve 1121 of multiple interior machines 113
It is connected by low pressure line 114, the other end is connect with heat exchanger 1122 by pressure duct 115.
Cold medium regulator 120 includes tapping tank 121, liquid feeding tank 122, the first solenoid valve 123, second solenoid valve 124；It puts
Flow container 121 is connect with the first solenoid valve 123, and the first solenoid valve 123 is connect with pressure duct 115, liquid feeding tank 122 and the second electromagnetism
Valve 124 connects, and second solenoid valve 124 is connect with low pressure line 114.
It is understood that can be convenient quickly by the first solenoid valve 123 of control and second solenoid valve 124 to air-conditioning
The amount of refrigerant is adjusted in device 110.
Optionally, in the present embodiment, liquid feeding tank 122 is connect with tapping tank 121 by check valve, so that air conditioner system
Cold automatic debugging system 100 forms the circulatory system of refrigerant.Cold medium regulator 120 further includes fluid filling pump 125, fluid filling pump 125
It is set between liquid feeding tank 122 and tapping tank 121.It is understood that can be quickly by tapping tank 121 by fluid filling pump 125
In refrigerant import liquid feeding tank 122 in.
In the present embodiment, the refrigerant amount control method the following steps are included:
Step S110: the state of the coolant quantity of air conditioner 110 is judged.
State judgement to coolant quantity is the basis adjusted to coolant quantity.The accuracy of state judgement, directly affects refrigerant
Measure the precision and efficiency adjusted.
Fig. 3 is flow diagram the step of judgement described in the present embodiment the state of 110 coolant quantity of air conditioner.Please
Referring to Fig. 3, optionally, in the present embodiment, step S110 be may comprise steps of:
Step S112: it receives first and judge that the factor second judges the factor at least one.
It should be noted that first judges that the factor is accurately to embody coolant quantity state factor, therefore as to cold
Matchmaker measures the necessary factor of judgement.At least one second judge the factor for auxiliary judgment coolant quantity state.
Optionally, in the present embodiment, first judges that the factor may include in system discharge pressure and system suction pressure
At least one, that is to say, that first judges that the factor can be system discharge pressure or system suction pressure, alternatively, the first judgement
The factor can be system discharge pressure and system suction pressure.
At least one second judge the factor may include delivery temperature, overheat of compressor degree, electric expansion valve the degree of superheat,
At least one of electronic expansion valve opening and system degree of supercooling.
That is, delivery temperature, overheat of compressor degree, the degree of superheat of electric expansion valve, electric expansion valve can be selected
Any one in aperture and system degree of supercooling is also possible to any two therein, three or all.
Optionally, in the present embodiment, above-mentioned whole parameters are selected.
Under national standard cooling condition (7 DEG C/6 DEG C of outside, 20 DEG C/15 DEG C of inside), compressor frequency range 65%~
75% (preferably 70%), the acceptability limit of above-mentioned each parameter are as follows:
1. system discharge pressure range 2.8Mpa~3.2Mpa (preferably 2.85Mpa)；System suction pressure limit 0.6Mpa
~0.8Mpa (preferably 0.7Mpa)；
2. 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)；
3. 3 DEG C~6 DEG C of the excessive range of compressor air suction (preferably 4 DEG C), outer 3 DEG C~6 DEG C of the 112 electric expansion valve degree of superheat of machine
(preferably 4 DEG C)；
4. outer 112 electronic expansion valve opening range 120pls~200pls (preferably 150pls) of machine；
5. 3 DEG C~6 DEG C of system degree of supercooling range (preferably 4 DEG C).
When system coolant quantity deficiency, the corresponding insufficient section of above-mentioned each parameter is as follows:
1. system discharge pressure is less than 2.8Mpa；System suction pressure is less than 0.6Mpa；
2. delivery temperature is greater than 80 DEG C；Discharge superheat is greater than 35 DEG C；
3. compressor air suction is excessively greater than 6 DEG C, the outer 112 electric expansion valve degree of superheat of machine is greater than 6 DEG C；
4. outer 112 electronic expansion valve opening of machine is greater than 200pls；
5. system degree of supercooling is less than 3 DEG C.
When system coolant quantity excess, the corresponding excessive section of above-mentioned each parameter is as follows:
1. system discharge pressure is greater than 3.2Mpa；System suction pressure is greater than 0.8Mpa；
2. delivery temperature is less than 70 DEG C；Discharge superheat is less than 25 DEG C；
3. compressor air suction, excessively less than 3 DEG C, the outer 112 electric expansion valve degree of superheat of machine is less than 3 DEG C；
4. outer 112 electronic expansion valve opening of machine is less than 120pls；
5. system degree of supercooling is greater than 6 DEG C.
Inventors have found that coolant quantity is insufficient or coolant quantity is excessive, system exhaust pressure in 110 process of refrigerastion of air conditioner
The susceptibility highest of power and system suction pressure, therefore, in the present embodiment, using system discharge pressure and system suction pressure as
Determine the call parameter of 110 coolant quantity state of air conditioner.
Optionally, step S110 may comprise steps of:
According to first judge the factor and at least one second judge that the factor judges the state of coolant quantity.
In the present embodiment, the step according to first judge the factor and at least one second judge that the factor judges the shape of coolant quantity
State includes:
Step S1131: the factor is judged in corresponding acceptability limit when first, alternatively, each second judges that the factor exists
In corresponding acceptability limit, determine that the coolant quantity of air conditioner 110 is appropriate.
Step S1132: when first judges the factor in corresponding insufficient range, and at least one second judges the factor each
In self-corresponding deficiency range, determine that the coolant quantity of air conditioner 110 is insufficient.
Step S1133: judge that the factor is crossed in multiregion corresponding when first, and at least one second judges the factor each
It is self-corresponding to cross in multiregion, determine that the coolant quantity of air conditioner 110 is excessive.
It is understood that can be by judging the first range for judging the factor, the state of preliminary judgement coolant quantity, if
First judges the factor in corresponding acceptability limit, then the coolant quantity of air conditioner 110 is appropriate.If first judges the factor in correspondence
Insufficient range in or first judge the factor it is corresponding cross multiregion in, then can by multiple second judge the factor combination
Judge the state of coolant quantity.
For example, 110 refrigeration operation of air conditioner after 30 minutes, start determine first judge the factor and multiple second judge because
Son, if current system pressure at expulsion is less than 2.8Mpa, also, current exhaust gas temperature is greater than 80 DEG C if, determines the coolant quantity of pre-add
It is insufficient.In another example current system pressure of inspiration(Pi) is less than 0.6Mpa, and system degree of supercooling then determines the refrigerant of pre-add less than 3 DEG C
Amount is insufficient.
For example, 110 refrigeration operation of air conditioner, after 30 minutes, current system pressure at expulsion is greater than 3.2Mpa, also, outer machine
The 112 electric expansion valve degrees of superheat then determine that the coolant quantity of pre-add is excessive less than 3 DEG C.In another example current system pressure of inspiration(Pi) is greater than
0.8Mpa, also, system degree of supercooling is greater than 6 DEG C, and compressor air suction then determines that the coolant quantity of pre-add is excessive excessively less than 3 DEG C.
For example, 110 refrigeration operation of air conditioner is after 30 minutes, current system pressure at expulsion can directly determine in 2.85Mpa
Appropriate coolant quantity.
In addition, it is necessary to which explanation freezes to air conditioner debug system automatically again after system coolant quantity is adjusted
Unite 100 coolant quantities state carry out interpretation, if each second judge the factor in corresponding acceptability limit, Huo Zhe
One judges the factor in corresponding acceptability limit, can directly determine that the coolant quantity of air conditioner 110 is appropriate.
Optionally, the refrigerant amount control method can with the following steps are included:
Step S121: in the state that coolant quantity is excessive, the first solenoid valve 123 of control is opened, so that in pressure duct 115
Excessive refrigerant is directed into tapping tank 121.
Step S131: in the state that coolant quantity is excessive, the first liquid storage amount data of tapping tank 121 are received.
Step S141: 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.
Step S123: in the state that coolant quantity is appropriate, terminate.
Furthermore, it is desirable to which explanation, completes above-mentioned steps, continues to execute and sentence to the state of 110 coolant quantity of air conditioner
Disconnected step.
It is understood that opening the first solenoid valve 123, refrigerant excessive in pressure duct 115 is directed into tapping tank
121, the coolant quantity of adjustable air conditioner 110.The adjusting of coolant quantity carries out step by step, once discharges a certain amount of refrigerant to putting
Flow container 121, being determined and debugged repeatedly exit judgement, this mode can be improved adjusting until coolant quantity is appropriate
Precision.
Optionally, it in the present embodiment, is discharged into according to 20~60g of each refrigerant burst size (preferably 50g) of systemic presupposition
In tapping fills, when the first liquid storage amount data are greater than 50g, the first solenoid valve 123 of control is closed, and system is run 30 minutes again
After judge, if first judges the factor in corresponding acceptability limit, alternatively, each second judges the factor corresponding
In acceptability limit, determines that the coolant quantity of air conditioner 110 is appropriate, exit judgement.
Optionally, the refrigerant amount control method is further comprising the steps of:
Step S122: in the state of coolant quantity deficiency, control second solenoid valve 124 is opened, so that in liquid feeding tank 122
Refrigerant is directed into low pressure line 114.
Step S132: in the state of coolant quantity deficiency, the second liquid storage amount data of tapping tank 121 are received.
Step S142: 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.
Furthermore, it is desirable to which explanation, completes above-mentioned steps, continues to execute and sentence to the state of 110 coolant quantity of air conditioner
Disconnected step.
It is understood that opening second solenoid valve 124, the refrigerant in liquid feeding tank 122 is directed into low pressure line 114,
The coolant quantity of adjustable air conditioner 110.The adjusting of coolant quantity carries out step by step, and a certain amount of refrigerant is once added to low-voltage tube
Road 114, being determined and debugged repeatedly exit judgement, this mode can be improved adjusting until coolant quantity is appropriate
Precision.
Optionally, it in the present embodiment, is added according to 20~60g of each refrigerant super-addition amount (preferably 50g) of systemic presupposition low
When the second liquid storage amount data are less than 50g second solenoid valve 124 is automatically closed, system runs 30 points again in pressure pipe road 114
Further judge after clock, if first judges the factor in corresponding acceptability limit, alternatively, each second judges the factor each
In self-corresponding acceptability limit, determines that the coolant quantity of air conditioner 110 is appropriate, exit judgement.
In order to realize the refrigerant circulation of air conditioner refrigeration automatic debugging system 100, in the present embodiment, refrigerant amount control method
Can with the following steps are included:
Receive the first pressure data of tapping tank 121；
Receive the second pressure data of liquid feeding tank 122；
When first pressure data are greater than the first rated value, control fluid filling pump 125 is opened；
Fluid filling pump 125 is controlled when second pressure data are less than the second rated value to open.
That is, can be passed through according to 122 hypotony of hypertonia or liquid feeding tank for working as tapping tank 121
It controls fluid filling pump 125 to open, realizes adjusting of the refrigerant between tapping tank 121 and liquid feeding tank 122.
To sum up, refrigerant amount control method provided in this embodiment, by judging the state of coolant quantity, individually control first is electric
Magnet valve 123 is opened, and refrigerant excessive in pressure duct 115 is imported tapping tank 121, or be individually controlled second solenoid valve
124 open, and the refrigerant in liquid feeding tank 122 is directed into low pressure line 114, and overall process is intelligent operation, and security performance is high,
And adjusting efficiency can be increased substantially.
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 (10)
1. a kind of refrigerant amount control method is applied to air conditioner refrigeration automatic debugging system (100), which is characterized in that the sky
Adjusting device refrigeration automatic debugging system (100) includes air conditioner (110) and cold medium regulator (120), air conditioner (110) packet
Include outer machine (112) and interior machine (113), the outer machine (112) includes connected four-way valve (1121) and heat exchanger (1122), described
One end of interior machine (113) is connect with the four-way valve (1121) by low pressure line (114), and the other end and heat exchanger (1122) are logical
Cross pressure duct (115) connection；The cold medium regulator (120) includes tapping tank (121), liquid feeding tank (122), the first electromagnetism
Valve (123), second solenoid valve (124)；The tapping tank (121) connect with first solenoid valve (123), first electromagnetism
Valve (123) is connect with the pressure duct (115), and the liquid feeding tank (122) connect with the second solenoid valve (124), described
Second solenoid valve (124) is connect with the low pressure line (114)；
The refrigerant amount control method includes:
The state of the air conditioner (110) coolant quantity is judged；
In the state that coolant quantity is excessive, controls first solenoid valve (123) and open, so that in the pressure duct (115)
Excessive refrigerant is directed into the tapping tank (121)；
In the state of coolant quantity deficiency, the second solenoid valve (124) unlatching is controlled, so that in the liquid feeding tank (122)
Refrigerant is directed into the low pressure line (114).
2. refrigerant amount control method as described in claim 1, which is characterized in that the refrigerant to the air conditioner (110)
Measuring the step of being judged includes:
It receives first and judge that the factor second judges the factor at least one；Wherein, first judges that the factor includes system discharge pressure
At least one of with system suction pressure, at least one described second judge the factor include delivery temperature, overheat of compressor degree,
At least one of the degree of superheat, electronic expansion valve opening and system degree of supercooling of electric expansion valve；
According to described first judge the factor and at least one described second judge that the factor judges the state of the coolant quantity.
3. refrigerant amount control method as claimed in claim 2, which is characterized in that described to judge the factor and extremely according to described first
Few one described second judges that the step of factor judges the state of the coolant quantity includes:
When described first judge the factor in corresponding acceptability limit, alternatively, each described second judge the factor respectively it is right
In the acceptability limit answered, determine that the coolant quantity of the air conditioner (110) is appropriate.
4. refrigerant amount control method as claimed in claim 2, which is characterized in that described to judge the factor and extremely according to described first
Few one described second judges that the step of factor judges the state of the coolant quantity includes:
When described first judges the factor in corresponding insufficient range, and at least one described second judges that the factor is respectively corresponding to
Insufficient range in, determine that the coolant quantity of the air conditioner (110) is insufficient.
5. refrigerant amount control method as claimed in claim 2, which is characterized in that described to judge the factor and extremely according to described first
Few one described second judges that the step of factor judges the state of the coolant quantity includes:
Judge that the factor is crossed in multiregion corresponding when described first, and at least one described second judges that the factor is respectively corresponding to
Mistake multiregion in, determine that the coolant quantity of the air conditioner (110) is excessive.
6. refrigerant amount control method according to claim 1-5, which is characterized in that described excessive in coolant quantity
Under state, controls first solenoid valve (123) and open, so that refrigerant excessive in the pressure duct (115) is directed into institute
After the step of stating tapping tank (121), the refrigerant amount control method further include:
In the state that coolant quantity is excessive, the first liquid storage amount data of the tapping tank (121) are received；
First solenoid valve (123) is controlled in the state that the first liquid storage amount data are greater than the first preset value to close.
7. refrigerant amount control method according to claim 6, which is characterized in that the reception tapping tank (121)
First liquid storage amount data control first solenoid valve in the state that the first liquid storage amount data are greater than the first preset value
(123) after the step of closing, the refrigerant amount control method further include:
Continue to execute the step of state to the air conditioner (110) coolant quantity judges.
8. refrigerant amount control method according to claim 1-5, which is characterized in that described insufficient in coolant quantity
Under state, the second solenoid valve (124) unlatching is controlled, so that the refrigerant in the liquid feeding tank (122) is directed into the low pressure
The step of pipeline (114) includes:
In the state of coolant quantity deficiency, the second liquid storage amount data of the tapping tank (121) are received；
The second solenoid valve (124) closing is controlled in the state that the second liquid storage amount data are less than the second preset value.
9. refrigerant amount control method according to claim 8, which is characterized in that the reception tapping tank (121)
Second liquid storage amount data control the second solenoid valve in the state that the second liquid storage amount data are less than the second preset value
(124) after the step of closing, the refrigerant amount control method further include:
Continue to execute the step of state to the air conditioner (110) coolant quantity judges.
10. refrigerant amount control method according to claim 1, which is characterized in that the cold medium regulator (120) is also wrapped
It includes fluid filling pump (125), the liquid feeding tank (122) is connect with the tapping tank (121) by check valve, the fluid filling pump (125)
It is set between the liquid feeding tank (122) and the tapping tank (121)；The refrigerant amount control method further include:
Receive the first pressure data of the tapping tank (121)；
Receive the second pressure data of the liquid feeding tank (122)；
The fluid filling pump (125) are controlled when the first pressure data are greater than the first rated value to open；
The fluid filling pump (125) unlatching is controlled when the second pressure data are less than the second rated value.
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