CN105509242B - A kind of refrigerant super-addition control method for air conditioner - Google Patents
A kind of refrigerant super-addition control method for air conditioner Download PDFInfo
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- CN105509242B CN105509242B CN201510981203.8A CN201510981203A CN105509242B CN 105509242 B CN105509242 B CN 105509242B CN 201510981203 A CN201510981203 A CN 201510981203A CN 105509242 B CN105509242 B CN 105509242B
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- refrigerant
- air conditioner
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- environment temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- 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
- F24F2110/00—Control inputs relating to air properties
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of refrigerant super-addition control method for air conditioner, the shut-off valve of external environment temperature sensing package, interior environment temperature sensing package, exhaust temperature sensing package and start and stop refrigerant super-addition is provided on air conditioner, this method includes：1, presetting external environment temperature TOutside, interior environment temperature TIt is interiorAnd target exhaust temperature TRow；2, start air conditioner, into refrigerant super-addition mode；3, detection Current outer loop border temperature T1, interior environment temperature T2 and delivery temperature T3, are compared with presetting analog value；4, it when comparison result is cold medium shortage, opens shut-off valve and carries out refrigerant super-addition, and continue to repeat detection and the comparison procedure of step 3, when comparison result is that refrigerant is suitable, enter step 5；5, shut-off valve is closed, refrigerant super-addition mode is terminated.In the case of cold medium shortage, persistently adds refrigerant and detection in real time judges coolant quantity state, shut-off valve is closed when reaching desired value, refrigerant super-addition promptly and accurately, has ensured the stable operation of compressor.
Description
Technical field
The present invention relates to air conditioner technical fields, and in particular to a kind of refrigerant super-addition control method for air conditioner.
Background technology
Currently, situations such as air-conditioner set is frequently encountered secondary refrigerant leakage, is lengthened to refrigerant pipe in the process of running,
It is required to add refrigerant to air-conditioner set to ensure the stable operation of unit under the above situation.However, under special circumstances, part
The project installation of air-conditioner set is lack of standardization or mounting condition is more severe, the not portable electricity when carrying out refrigerant super-addition operation
Sub- scale, can not rational judgment refrigerant super-addition amount it is whether suitable, normally only by detection valve pressure or according to repair technician
Fu's experience fuzzy Judgment, thus can make refrigerant super-addition amount often be not allowed, and it is insufficient or additional excessive to be susceptible to refrigerant super-addition
The case where, so as to cause air conditioner, compressor lacks fluorine or crosses fluorine operation for a long time in actual operation, influences the compressor service life.
Invention content
The technical problem to be solved by the present invention is to provide one kind in cold medium shortage in judging air conditioner, accurately control cold
Matchmaker's additional quantity is to ensure the control method of compressor stable operation.
The technical scheme is that a kind of refrigerant super-addition control method for air conditioner is provided, on the air conditioner
Be provided with the external environment temperature sensing package for detecting outdoor environment temperature, the interior environment temperature sensing package for detecting indoor environment temperature,
Exhaust temperature sensing package for detecting compressor exhaust temperature, and the shut-off valve for controlling start and stop refrigerant super-addition, the method
Include the following steps：
S1：Presetting external environment temperature TOutside, interior environment temperature TIt is interior, and in TOutsideAnd TIt is interiorUnder make the mesh that compressor reliably operates
Mark delivery temperature TRow；
S2：Start air conditioner, into refrigerant super-addition mode；
S3：Detect Current outer loop border temperature T1, it is current in environment temperature T2 and current exhaust gas temperature T3, and with it is presetting
Analog value be compared；
S4：It when comparison result is cold medium shortage, opens shut-off valve and carries out refrigerant super-addition, and continue to repeat the inspection of step S3
It surveys and comparison procedure enters step S5 when comparison result is that refrigerant is suitable；
S5：Shut-off valve is closed, refrigerant super-addition mode is terminated.
Preferably, in the step S4, when comparison result is that refrigerant is suitable before opening shut-off valve, refrigerant is directly exited
Additional pattern.
Preferably, in the step S4, when comparison result is refrigerant excess before opening shut-off valve, refrigerant super-addition is exited
Pattern.
Further, it connects between shut-off valve and the entrance of the gas-liquid separator of air conditioner capillary, passes through the hair
Tubule controls refrigerant super-addition speed.
Further, in the step S4, when T1, T2 fall into T simultaneouslyOutsideAnd TIt is interiorRange, and T3 ＞ TRowWhen, judgement is compared
As a result it is cold medium shortage.
Further, in the step S4, when T1, T2 fall into T simultaneouslyOutsideAnd TIt is interiorRange, and TRow-1≤T3≤TRowWhen, sentence
It is that refrigerant is suitable to determine comparison result.
Further, in the step S4, when T1, T2 fall into T simultaneouslyOutsideAnd TIt is interiorRange, and T3≤TRowWhen -1, ratio is judged
Relatively result is that refrigerant is excessive.
Preferably, judgement comparison result for refrigerant it is suitable after, control air conditioner exports the first alarm song, and controls air conditioner
It is shut down after preset time.
Preferably, after judgement comparison result is refrigerant excess, control air conditioner exports the second alarm song, and controls air conditioner
Directly shut down.
Technical solution of the present invention has the beneficial effect that：By presetting external environment temperature TOutside, interior environment temperature TIt is interiorAnd
Target exhaust temperature TRowMapping relations, it is suitable in coolant quantity to define, with external environment temperature TOutside, interior environment temperature
TIt is interiorCorresponding target exhaust temperature TRowDesired temperature；After entering refrigerant super-addition mode, by detecting Current outer loop border
Temperature and interior environment temperature and current exhaust gas temperature, and compared with presetting each value, it is opposite according to current exhaust gas temperature
Judge whether coolant quantity is suitable in the difference of predetermined value, in the case of cold medium shortage, persistently adds refrigerant and detect in real time
Judge coolant quantity state, closes shut-off valve in time when delivery temperature reaches desired value and complete refrigerant super-addition operation, entire refrigerant
Additional control process promptly and accurately, has ensured the stable operation of compressor.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of structure chart of air conditioner provided in an embodiment of the present invention；
Fig. 2 is a kind of refrigerant super-addition control method flow chart for air conditioner provided in an embodiment of the present invention.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments.
It please refers to Fig.1, shown in Fig. 2, the present invention provides a kind of refrigerant super-addition control method for air conditioner, the air-conditionings
The external environment temperature sensing package for detecting outdoor environment temperature, the interior environment temperature-sensitive for detecting indoor environment temperature are provided on device
Packet, the exhaust temperature sensing package for detecting compressor exhaust temperature, and the shut-off valve 1 for controlling start and stop refrigerant super-addition, it is above-mentioned
Multiple temperature sensing packages are not indicated in figure, as shown in Figure 1, further including common compressor 2, four-way reversing valve in the air conditioner
3, condenser 4 and orifice union 5, structure and operation principle is known to those skilled in the art, details are not described herein.This reality
It applies in example, refrigerant super-addition control method includes the following steps：
S1：Presetting external environment temperature TOutside, interior environment temperature TIt is interior, and in TOutsideAnd TIt is interiorUnder make the mesh that compressor reliably operates
Mark delivery temperature TRow。
Wherein, the delivery temperature when coolant quantity in air conditioner unit directly influences compressor operating, and air conditioner is transported
Interior environment temperature, external environment temperature are closely bound up with the delivery temperature of compressor when row, and therefore, coolant quantity closes in air conditioner
In due course, under the conditions of given interior ambient temperature range and external environment temperature range, the compressor of operation is stable there are one
Target exhaust temperature value, when the coolant quantity in air conditioner occurs insufficient because of unexpected situation, in the outdoor temperature environment with setting
Under the same conditions, the real time exhaust gas temperature of compressor should be more than target exhaust temperature, conversely, in the situation of refrigerant excess
Under, the real time exhaust gas temperature of compressor should be less than target exhaust temperature.
S2：Start air conditioner, into refrigerant super-addition mode.
In the present embodiment, refrigerant super-addition mode is set on the controller of air conditioner, the beginning of refrigerant super-addition operation stops
It is realized by controlling opening, closing shut-off valve.
S3：Detect Current outer loop border temperature T1, it is current in environment temperature T2 and current exhaust gas temperature T3, and with it is presetting
Analog value be compared.
Specifically, start air conditioner, start temperature detects after control air conditioner operation a period of time system is stablized, the operation
Time can be 5~10 minutes, after system stable operation, detected respectively by each temperature sensing package and obtain indoor and outdoor surroundings temperature
The current exhaust gas temperature T3 of T2, T1 and compressor, after obtaining each temperature parameter value, controller is by each parameter value and preset value
It is compared, searches T corresponding with T1, T2OutsideAnd TIt is interiorUnder the conditions of target exhaust temperature TRow, as T3 ＞ TRowWhen, it is possible to determine that it is cold
Matchmaker is insufficient.
S4：It when comparison result is cold medium shortage, opens shut-off valve and carries out refrigerant super-addition, and continue to repeat the inspection of step S3
It surveys and comparison procedure enters step S5 when comparison result is that refrigerant is suitable.
After judging cold medium shortage through the above steps, opening stop valve additional refrigerant into refrigerant pipe adds the same of refrigerant
When, periodically real time steps S3 detects each temperature parameter and judges coolant quantity real-time status in real time.
S5：Shut-off valve is closed, refrigerant super-addition mode is terminated.When coolant quantity is appended to desired value, closes shut-off valve and stop
Continue to add, while refrigerant super-addition mode is exited in controller setting.
Preferably, it in above-mentioned steps S4, when comparison result is that refrigerant is suitable before opening shut-off valve, directly exits cold
Matchmaker adds pattern.Wherein, presetting external environment temperature TOutsideWith interior environment temperature TIt is interior, can be the section in a segment limit respectively
Temperature judges that the suitable situation of refrigerant is then to meet at the same time in section external environment temperature and section in the case of environment temperature,
Current compressor delivery temperature reaches setting target exhaust temperature value, is one of which exemplary map relationship as shown in the table
Table：
As shown above, the first horizontal bar is presetting external environment temperature range, and the first perpendicular column is presetting interior environment
Temperature range, middle section are the target exhaust temperature value of corresponding each section internal and external environment temperature.
Further, in above-mentioned steps S4, when T1, T2 fall into T simultaneouslyOutsideAnd TIt is interiorRange, and T3 ＞ TRowWhen, judgement ratio
Relatively result is cold medium shortage.As shown above, it is assumed that Current outer loop border temperature T1 is 20 DEG C, and current interior environment temperature T2 is 18
DEG C, and current compressor delivery temperature T3 be 72 DEG C when；T1 falls into 17~20 TOutsideTemperature range, T2 fall into 18~20 TIt is interiorTemperature
Section is spent, the target exhaust temperature of compressor should be 70 DEG C at this time, compare and learn T3 ＞ TRow, it is possible to determine that current coolant quantity is not
Foot.
Preferably, it in above-mentioned steps S4, when comparison result is refrigerant excess before opening shut-off valve, exits refrigerant and chases after
Add pattern.In the present embodiment, when T1, T2 fall into T simultaneouslyOutsideAnd TIt is interiorRange, and T3≤TRowWhen -1, judgement comparison result is refrigerant
It is excessive.Preferably, after judgement comparison result is refrigerant excess, control air conditioner exports the second alarm song, and it is straight to control air conditioner
Connect shutdown.Part refrigerant can be exhausted after shutdown, then detect unit residue refrigerant situation again.
As shown above, it is assumed that Current outer loop border temperature T1 is 20 DEG C, and current interior environment temperature T2 is 18 DEG C, and is currently pressed
When contracting machine delivery temperature T3 is 68 DEG C；T1 falls into 17~20 TOutsideTemperature range, T2 fall into 18~20 TIt is interiorTemperature range, at this time
The target exhaust temperature of compressor should be 70 DEG C, compare and learn T3 ＜ TRow- 1, it is possible to determine that current coolant quantity is excessive.Refrigerant mistake
Amount can be unfavorable for the normal work of compressor, need not carry out refrigerant super-addition, can directly export excessive alarm song, such as control
Unit sends out two sound of buzzing to remind staff's refrigerant excessive, and then control is shut down.
Further, the series connection capillary 7 between shut-off valve and the entrance of the gas-liquid separator 6 of air conditioner, passes through capillary
Pipe 7 controls refrigerant super-addition speed.The setting of capillary 7 can control refrigerant and slowly be filled in refrigerant pipe, give each temperature sensing package and control
Device processed has enough reactions and processing time, is conducive to accurately control refrigerant super-addition amount.
Further, in above-mentioned steps S4, when T1, T2 fall into T simultaneouslyOutsideAnd TIt is interiorRange, and TRow-1≤T3≤TRowWhen,
Judge that comparison result is suitable for refrigerant.Preferably, judgement comparison result for refrigerant it is suitable after, control air conditioner export the first alarm
Sound, and control air conditioner and shut down after preset time.
As shown above, it is assumed that Current outer loop border temperature T1 is 20 DEG C, and current interior environment temperature T2 is 18 DEG C, and is currently pressed
When contracting machine delivery temperature T3 is 70 DEG C；T1 falls into 17~20 TOutsideTemperature range, T2 fall into 18~20 TIt is interiorTemperature range, at this time
The target exhaust temperature of compressor should be 70 DEG C, compare and learn TRow-1≤T3≤TRow, it is possible to determine that current coolant quantity is suitable.It is cold
Matchmaker, which is appended to after appropriate level, to need to stop continuing to add in time, can be in the present embodiment control unit send out buzzing into
Row is reminded, while being shut down after countdown 5S.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of refrigerant super-addition control method for air conditioner, it is provided on the air conditioner for detecting outdoor environment temperature
External environment temperature sensing package, the interior environment temperature sensing package for detecting indoor environment temperature, the row for detecting compressor exhaust temperature
Gas temperature sensing package, and the shut-off valve for controlling start and stop refrigerant super-addition, which is characterized in that the described method comprises the following steps：
S1：Presetting external environment temperature TOutside, interior environment temperature TIt is interior, and in TOutsideAnd TIt is interiorUnder make the target row that compressor reliably operates
Temperature degree TRow；
S2：Start air conditioner, into refrigerant super-addition mode；
S3：Detect Current outer loop border temperature T1, it is current in environment temperature T2 and current exhaust gas temperature T3, and with presetting phase
It should be worth and be compared；
S4：When comparison result is cold medium shortage, opens shut-off valve and carry out refrigerant super-addition, and continue to repeat step S3 detection and
Comparison procedure enters step S5 when comparison result is that refrigerant is suitable；
S5：Shut-off valve is closed, refrigerant super-addition mode is terminated；
In the step S4, when comparison result is that refrigerant is suitable before opening shut-off valve, refrigerant super-addition mode is directly exited；
In the step S4, when comparison result is refrigerant excess before opening shut-off valve, refrigerant super-addition mode is exited；
In the step S4, when T1, T2 fall into T simultaneouslyOutsideAnd TIt is interiorRange, and T3 ＞ TRowWhen, judge comparison result for refrigerant not
Foot；
In the step S4, when T1, T2 fall into T simultaneouslyOutsideAnd TIt is interiorRange, and TRow-1≤T3≤TRowWhen, judgement comparison result is
Refrigerant is suitable；
In the step S4, when T1, T2 fall into T simultaneouslyOutsideAnd TIt is interiorRange, and T3≤TRowWhen -1, judgement comparison result is refrigerant
It is excessive.
2. the refrigerant super-addition control method according to claim 1 for air conditioner, which is characterized in that in shut-off valve and sky
It adjusts and connects capillary between the entrance of the gas-liquid separator of device, pass through the capillary and control refrigerant super-addition speed.
3. the refrigerant super-addition control method according to claim 1 for air conditioner, which is characterized in that judgement comparison result
For refrigerant it is suitable after, control air conditioner exports the first alarm song, and controls air conditioner and is shut down after preset time.
4. the refrigerant super-addition control method according to claim 1 for air conditioner, which is characterized in that judgement comparison result
After refrigerant excess, control air conditioner exports the second alarm song, and controls air conditioner and directly shut down.
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| CN201510981203.8A CN105509242B (en) | 2015-12-23 | 2015-12-23 | A kind of refrigerant super-addition control method for air conditioner |
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| CN105509242B true CN105509242B (en) | 2018-09-25 |
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| CN107339835A (en) * | 2017-07-25 | 2017-11-10 | 珠海格力电器股份有限公司 | A kind of refrigerant quantity monitoring method and device |
| CN107906672B (en) * | 2017-10-31 | 2020-03-10 | 广东美的暖通设备有限公司 | Refrigerant quantity judging method and system |
| CN107906671B (en) * | 2017-10-31 | 2020-08-07 | 广东美的暖通设备有限公司 | Refrigerant quantity judging method and system |
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| CN110849007B (en) * | 2019-11-26 | 2022-04-08 | 宁波奥克斯电气股份有限公司 | Automatic refrigerant quantity adjusting and controlling method and device and air conditioner |
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| CN101749825B (en) * | 2008-12-04 | 2012-10-03 | 珠海格力电器股份有限公司 | Refrigerant super-addition control method for composite air conditioner |
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