CN104729172B - Air conditioner and capacity change judgment method thereof - Google Patents
Air conditioner and capacity change judgment method thereof Download PDFInfo
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- CN104729172B CN104729172B CN201310719349.6A CN201310719349A CN104729172B CN 104729172 B CN104729172 B CN 104729172B CN 201310719349 A CN201310719349 A CN 201310719349A CN 104729172 B CN104729172 B CN 104729172B
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- compressor
- air
- determination methods
- state
- volume change
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008859 change Effects 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides an air conditioner and a method for judging capacity change of the air conditioner. An air conditioner according to the present invention includes: the compressor, the four-way valve, the indoor heat exchanger and the outdoor heat exchanger are sequentially communicated; the outlet end of the compressor is communicated with the inlet end of the variable volume cylinder of the compressor, and a solenoid valve is arranged on a pipeline between the outlet end of the compressor and the inlet end of the variable volume cylinder of the compressor; the four-way valve is communicated with the inlet end of a constant volume cylinder of the compressor through a gas-liquid separator; and the controller detects the working state of the electromagnetic valve and the actual running state of the compressor. Through the comparison of the on-off state of the electromagnetic valve and the actual working state of the compressor, whether the compressor fails in single-cylinder and double-cylinder switching is judged, abnormal conditions of the air conditioner unit are prevented, and the reliability and the stability of the air conditioner unit are improved.
Description
Technical field
The present invention relates to field of air conditioning, especially, it is related to the determination methods of a kind of air-conditioner and its volume change.
Background technology
In prior art, using variable capacity two-spool compressor, in high frequency using birotor pattern, enable big ability
Output, improve cooling and warming speed, in low frequency may be selected use single rotor pattern, bypass fall a rotor, realize low work(
Rate, when air conditioner load is less, enables not shut down work, the stability of keeping temperature, and temperature difference fluctuation is little, energy-conservation, comfortable.But
It is the method not having such air-conditioning that unit single cylinder operationally and twin-tub state are judged, when single, double cylinder switching failure
When, if unit can not judge, system can be caused unstable, affect performance and the reliability of unit.
Content of the invention
Present invention aim at providing the determination methods of a kind of air-conditioner and its volume change, lost with solving single twin-tub switching
During effect, the technical problem of abnormal conditions in unit.
For achieving the above object, the invention provides a kind of air-conditioner, comprising: be sequentially connected logical compressor, cross valve,
Indoor heat exchanger and outdoor heat exchanger；The port of export of compressor is connected with the transfiguration cylinder entrance point of compressor, compressor
It is provided with electromagnetic valve on pipeline between the transfiguration cylinder entrance point of the port of export and compressor；Cross valve pass through gas-liquid separator with
The constant volume cylinder entrance point of compressor is connected；Controller, the detection working condition of electromagnetic valve and the actual motion shape of compressor
State.
Further, the transfiguration cylinder entrance point of compressor arranges the first temperature sensor.
Further, it is provided with second temperature sensor between cross valve and gas-liquid separator.
Further, gas-liquid separator outlet is connected with transfiguration cylinder entrance point.
Further, between gas-liquid separator outlet and transfiguration cylinder entrance point, check valve is set.
Further, it is provided with throttling arrangement between indoor heat exchanger and outdoor heat exchanger.
Further, also include controller, control and judge the on off state of electromagnetic valve.
Present invention also offers a kind of determination methods of air-conditioner volume change,
Temperature t1 of detection transfiguration cylinder entrance point；And temperature t2 of constant volume cylinder entrance point, t2-t1=k；
Relatively k and constant c, detection a period of time, if during k >=c, compressor actual motion state is run for single cylinder；
If during k ＜ c, compressor actual motion state is run for twin-tub；
If it is judged that being consistent with the state that should execute, then continue to run with；If it is judged that with should execute
State does not meet, then stopping alarm.
Further, the state that the energising situation judgement of detection electromagnetic valve should execute, if solenoid valves, should
The state of execution is single cylinder running status, if electromagnetic valve dead electricity, for twin-tub running status.
Further, constant c span is 3 DEG C to 7 DEG C.
The method have the advantages that
By the comparison of the break-make electricity condition of electromagnetic valve and compressor actual working state, judge whether compressor list
Twin-tub switching failure, prevents air-conditioner unit from abnormal conditions, improves the reliability and stability of air-conditioner unit.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the single cylinder operation schematic diagram of the air-conditioner according to the present invention；
Fig. 2 is the twin-tub operation schematic diagram of the air-conditioner according to the present invention；And
Fig. 3 is the determination methods schematic diagram of the air-conditioner volume change according to the present invention.
Reference in accompanying drawing is as follows: 10, compressor；20th, cross valve；30th, indoor heat exchanger；40th, outdoor heat exchanger；
50th, gas-liquid separator；60th, electromagnetic valve；71st, the first temperature sensor；72nd, second temperature sensor；80th, throttling arrangement；90th, single
To valve.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can be defined by the claims
Implement with the multitude of different ways covering.
Referring to Fig. 1 and Fig. 2, according to the air-conditioner of the present invention, comprising: be sequentially connected logical compressor 10, cross valve 20, room
Interior heat exchanger 30 and outdoor heat exchanger 40；The first interface d of cross valve 20 is connected with the port of export of compressor 10, cross valve 20
Second interface e be connected with indoor heat exchanger 30, the 3rd interface s of cross valve 20 is connected with the entrance point of compressor 10,
4th interface c of cross valve 20 is connected with outdoor heat exchanger 40；The port of export of compressor 10 and the transfiguration cylinder of compressor 10
Entrance point is connected, and the pipeline between the transfiguration cylinder entrance point of the port of export of compressor 10 and compressor is provided with electromagnetic valve
60；Cross valve 20 is connected with the constant volume cylinder entrance point of compressor 10 by gas-liquid separator 50；Controller, detects electromagnetic valve
The actual motion state of 60 working condition and compressor 10.By the break-make electricity condition of electromagnetism and compressor actual working state
Comparison, judge whether compressor single twin-tub switching failure, prevent air-conditioner unit from abnormal conditions occurring, improve air-conditioner
The reliability and stability of unit.
It is the single cylinder operation schematic diagram of the air-conditioner according to the present invention referring to Fig. 1, electromagnetic valve 60 is opened, connect compressor 10
The port of export and compressor transfiguration cylinder entrance point, high pressure gas enter the transfiguration cylinder of compressor, and the idle running of transfiguration cylinder is real
Existing single cylinder runs.
It is the twin-tub operation schematic diagram of the air-conditioner according to the present invention referring to Fig. 2, electromagnetic valve 60 cuts out, the going out of compressor 10
Mouth end is separated with the transfiguration cylinder entrance point of compressor, and low-pressure gas exports through gas-liquid separator 50 and enters described transfiguration cylinder,
The acting of transfiguration cylinder compression is realized twin-tub and is run.
Referring to Fig. 1 and Fig. 2, the transfiguration cylinder entrance point of compressor 10 arranges the first temperature sensor 71.Cross valve 20 with
It is provided with second temperature sensor 72 between gas-liquid separator 50.Gas-liquid separator 50 is exported and is connected with transfiguration cylinder entrance point
Logical.Gas-liquid separator 50 exports setting check valve 90 and transfiguration cylinder entrance point between.Indoor heat exchanger 30 and outdoor heat exchanger
It is provided with throttling arrangement 80 between 40.Air-conditioner also includes controller, controls and judge the on off state of electromagnetic valve 60.
Referring to Fig. 3, the determination methods of the air-conditioner volume change according to the present invention, the temperature of detection transfiguration cylinder entrance point
t1；Temperature t2 of detection constant volume cylinder entrance point, t2-t1=k；Detection a period of time, if during k >=c, compressor 10 is actual
Running status is single cylinder；If during k ＜ c, compressor 10 actual motion state is twin-tub；If it is judged that with should execute
State be consistent, then continue to run with；If it is judged that not meeting with the state that should execute, then stopping alarm.
When single cylinder runs, electromagnetic valve 60 is opened；When twin-tub runs, electromagnetic valve 60 cuts out；Temperature sensor 71 detection is lower to inhale
Temperature t1 of QI KOU, contrast t1 and suction nozzle temperature t2, t1-t2=k, constant c, determined by experiment according to unit cold difference,
Span is 3 DEG C to 7 DEG C, when being continuously detected certain time, during k >=c, then judges that compressor 10 actual motion state is single
Cylinder, works as certain time, when k c is detected, then judges that compressor 10 actual motion state is twin-tub.Finger when master control output
When order and the actual motion state fed back by detection are inconsistent, then shut down report fault.
The energising situation of detection electromagnetic valve 60, if electromagnetic valve 60 is energized, compressor 10 should execute working condition and be
Single cylinder running status.The energising situation of detection electromagnetic valve 60, if electromagnetic valve 60 dead electricity, compressor 10 should execute work shape
State is twin-tub running status.
First temperature sensor 71 is set at 10 times cylinders of compressor (transfiguration cylinder) suction nozzle, and detection temperature is t1
(unit DEG C)；Second temperature sensor 72 is set at gas-liquid separator 50 suction nozzle of compressor 10, and detection temperature is that t2(is mono-
Position DEG C)；
When air-conditioner unit is when needing single cylinder to run, electromagnetic valve 60 is opened, now under exhaust side branch road and compressor 10
Cylinder directly communicates, and temperature t1 of now the first temperature sensor 71 detection is close with delivery temperature.When air-conditioner unit needs
When twin-tub runs, electromagnetic valve 60 cuts out, and now edema caused by disorder of QI outlet pipe is connected with lower suction cylinder, the temperature of the first temperature sensor 71 detection
T1 is close with suction temperature t2 for degree.
Concrete determination methods:
1st, air-conditioner unit start run, persistently detect electromagnetic valve 60 state, when detect electromagnetic valve 60 electric when, air-conditioning
It is considered on device unit allocation that single cylinder operates.
Set t1-t2=k, as k >=c, and continue the t1 second, then judge that now air-conditioner unit actual motion state is as single cylinder
Running status, now consistent with air-conditioner unit allocation order, continuous service；As k c, and continue the t1 second, then judge this space-time
Tune device unit actual motion state is twin-tub running status, now inconsistent with control command, then stopping alarm is it is ensured that system
Reliability and safety.
2nd, air-conditioner unit start runs, and persistently detects electromagnetic valve 60 state, when electromagnetic valve 60 dead electricity is detected, controls
It is output as twin-tub.
Set t1-t2=k, as k c, and continue the t1 second, then judge that now air-conditioner unit actual motion state is transported as twin-tub
Row state, is now exported with mainboard and orders consistent, continuous service；As k >=c, and continue the t1 second, then judge now air-conditioner unit
Actual motion state is single cylinder running status, now inconsistent with mainboard output control, then stopping alarm.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
By the comparison of the break-make electricity condition of electromagnetic valve and compressor actual working state, judge whether compressor list
Twin-tub switching failure, prevents air-conditioner unit from abnormal conditions, improves the reliability and stability of air-conditioner unit.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of determination methods of air-conditioner volume change are it is characterised in that described air-conditioner includes:
It is sequentially connected logical compressor (10), cross valve (20), indoor heat exchanger (30) and outdoor heat exchanger (40)；
The port of export of described compressor (10) is connected with the transfiguration cylinder entrance point of described compressor, described compressor (10)
It is provided with electromagnetic valve (60) on pipeline between the transfiguration cylinder entrance point of the port of export and described compressor；
Described cross valve (20) is connected with the constant volume cylinder entrance point of described compressor by gas-liquid separator (50)；
Controller, detects the working condition of described electromagnetic valve (60) and the actual motion state of described compressor (10)；
Described determination methods include: detect temperature t1 of described transfiguration cylinder entrance point；And described constant volume cylinder entrance point
Temperature t2, t2-t1=k；
Relatively k and constant c, detection a period of time, if during k >=c, compressor actual motion state is run for single cylinder；If k
During ＜ c, then compressor actual motion state is run for twin-tub；
If it is judged that being consistent with the state that should execute, then continue to run with；If it is judged that with the state that should execute
Do not meet, then stopping alarm.
2. the determination methods of air-conditioner volume change according to claim 1 are it is characterised in that the transfiguration of described compressor
Cylinder entrance point arranges the first temperature sensor (71).
3. the determination methods of air-conditioner volume change according to claim 1 and 2 are it is characterised in that described cross valve
(20) it is provided with second temperature sensor (72) and described gas-liquid separator (50) between.
4. the determination methods of air-conditioner volume change according to claim 1 are it is characterised in that described gas-liquid separator
(50) outlet is connected with described transfiguration cylinder entrance point.
5. the determination methods of air-conditioner volume change according to claim 4 are it is characterised in that described gas-liquid separator
(50) setting check valve (90) between outlet and described transfiguration cylinder entrance point.
6. the determination methods of air-conditioner volume change according to claim 1 are it is characterised in that described indoor heat exchanger
(30) it is provided with throttling arrangement (80) and described outdoor heat exchanger (40) between.
7. the determination methods of air-conditioner volume change according to claim 2, it is characterised in that also including controller, are controlled
Make and judge the on off state of described electromagnetic valve (60).
8. the determination methods of air-conditioner volume change according to claim 3, it is characterised in that also including controller, are controlled
Make and judge the on off state of described electromagnetic valve (60).
9. the determination methods of air-conditioner volume change according to claim 1 are it is characterised in that detect the energising of electromagnetic valve
The state that situation judgement should execute, if solenoid valves, the state that should execute is single cylinder running status, if electromagnetism
Valve dead electricity, then for twin-tub running status.
10. the determination methods of air-conditioner volume change according to claim 1, described constant c span is 3 DEG C to 7
℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719349.6A CN104729172B (en) | 2013-12-23 | 2013-12-23 | Air conditioner and capacity change judgment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719349.6A CN104729172B (en) | 2013-12-23 | 2013-12-23 | Air conditioner and capacity change judgment method thereof |
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| Publication Number | Publication Date |
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| CN104729172A CN104729172A (en) | 2015-06-24 |
| CN104729172B true CN104729172B (en) | 2017-01-18 |
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| CN201310719349.6A Active CN104729172B (en) | 2013-12-23 | 2013-12-23 | Air conditioner and capacity change judgment method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152342B (en) * | 2016-07-04 | 2020-12-04 | 珠海格力电器股份有限公司 | Variable-displacement-ratio two-stage compression air conditioning system and control method thereof |
| CN109269039B (en) | 2018-08-06 | 2020-11-10 | 珠海格力电器股份有限公司 | Control method of compressor and refrigerant circulating system |
| CN109357452B (en) * | 2018-10-19 | 2019-12-27 | 珠海格力电器股份有限公司 | Compressor cylinder body switching detection method and device and air conditioner |
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| CN1142596A (en) * | 1994-12-21 | 1997-02-12 | 运载器有限公司 | Capacity control for multi-stage compressors |
| CN101109592A (en) * | 2006-07-19 | 2008-01-23 | 乐金电子(天津)电器有限公司 | Temperature emergent state controlling means for air conditioner compressor air suction port |
| CN101178236A (en) * | 2006-11-10 | 2008-05-14 | 海尔集团公司 | Air conditioner malfunction detection method and system |
| JP2010127082A (en) * | 2008-11-25 | 2010-06-10 | Sanden Corp | Variable displacement reciprocating compressor |
| CN102072529A (en) * | 2010-11-26 | 2011-05-25 | 广东美的制冷设备有限公司 | Air conditioner using variable volume compressor and control method thereof |
| KR20120122657A (en) * | 2011-04-29 | 2012-11-07 | 한라공조주식회사 | Variable displacement swash plate type compressor |
-
2013
- 2013-12-23 CN CN201310719349.6A patent/CN104729172B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1142596A (en) * | 1994-12-21 | 1997-02-12 | 运载器有限公司 | Capacity control for multi-stage compressors |
| CN101109592A (en) * | 2006-07-19 | 2008-01-23 | 乐金电子(天津)电器有限公司 | Temperature emergent state controlling means for air conditioner compressor air suction port |
| CN101178236A (en) * | 2006-11-10 | 2008-05-14 | 海尔集团公司 | Air conditioner malfunction detection method and system |
| JP2010127082A (en) * | 2008-11-25 | 2010-06-10 | Sanden Corp | Variable displacement reciprocating compressor |
| CN102072529A (en) * | 2010-11-26 | 2011-05-25 | 广东美的制冷设备有限公司 | Air conditioner using variable volume compressor and control method thereof |
| KR20120122657A (en) * | 2011-04-29 | 2012-11-07 | 한라공조주식회사 | Variable displacement swash plate type compressor |
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