CN102967450A - Method for detecting whether outdoor unit check valve of split type air conditioning unit is installed reversely - Google Patents
Method for detecting whether outdoor unit check valve of split type air conditioning unit is installed reversely Download PDFInfo
- Publication number
- CN102967450A CN102967450A CN2012104043878A CN201210404387A CN102967450A CN 102967450 A CN102967450 A CN 102967450A CN 2012104043878 A CN2012104043878 A CN 2012104043878A CN 201210404387 A CN201210404387 A CN 201210404387A CN 102967450 A CN102967450 A CN 102967450A
- Authority
- CN
- China
- Prior art keywords
- temperature
- heat exchanger
- judge
- coil pipe
- loaded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method for detecting whether an outdoor unit check valve of a split type air conditioning unit is installed reversely. The method mainly comprises the steps of firstly, finding out an outdoor unit where the outdoor unit check valve (1) is possibly installed reversely; if the temperature T2 in the middle of a coil of an outdoor unit heat exchanger (3) is larger than or equal to 25 DEG C, and the difference value between the gas discharging temperature T1 of the outdoor unit and the temperature T2 in the middle of the coil of the outdoor unit heat exchanger (3) is larger than or equal to 30 DEG C, performing finding continuously; if the average value delta T3 of temperatures at coil inlets of indoor heat exchangers (4) is smaller than or equal to 5 DEG C, performing finding continuously; if the difference value between the average value delta T5 of indoor temperatures and the average value delta T4 of temperatures in the middles of coils of the indoor heat exchangers (4) is larger than 0 DEG C and smaller than or equal to 4 DEG C, performing finding continuously; and if the difference value between the average value delta T5 of indoor temperatures and the average value delta T6 of temperatures at coil outlets of the indoor heat exchangers (4) is larger than 0 DEG C and smaller than or equal to 2 DEG C, judging the outdoor unit check valve (1) of the outdoor unit is installed reversely. The detection method is fast, convenient and efficient.
Description
Technical field
The present invention relates to VRF Air Conditioning System, specifically is a kind of outer machine retaining valve anti-loaded detection method whether of VRF Air Conditioning System.
Background technology
The VRF Air Conditioning System of prior art comprises a plurality of off-premises stations parallel with one another, a plurality of indoor set parallel with one another and two refrigerant circulation house stewards that connect each indoor set and each off-premises station.A plurality of off-premises stations after the parallel connection are communicated with a plurality of indoor sets after the parallel connection by two refrigerants circulation house stewards.
Each off-premises station comprises compressor, oil separator, four-way change-over valve, outdoor heat exchanger (being evaporator when being condenser and heating mode during refrigeration mode), is parallel with retaining valve and reservoir and the gas-liquid separator of outer organic electronic expansion valve.Compressor outlet is communicated with an end of oil separator, the other end of oil separator is communicated with the first valve port of four-way change-over valve, four-way change-over valve the second valve port is communicated with outdoor heat exchanger one end, the outdoor heat exchanger other end is communicated with the same end of outer organic electronic expansion valve and retaining valve, the other end of outer organic electronic expansion valve and retaining valve is communicated with an end of reservoir, one among the other end of reservoir and the two refrigerants circulation house stewards is communicated with, and another root refrigerant circulation house steward among two refrigerants circulation house steward is communicated with four-way change-over valve the 3rd valve port of each off-premises station, four-way change-over valve the 4th valve port is communicated with an end of gas-liquid separator, and the other end of gas-liquid separator is communicated with the suction port of compressor.
Each indoor set comprises interior organic electronic expansion valve and indoor heat exchanger when heating (during refrigeration mode be evaporator be condenser), one end of indoor heat exchanger is communicated with an end of interior organic electronic expansion valve, one among the other end of interior organic electronic expansion valve and the two refrigerants circulation house stewards is communicated with, and the house steward that circulates is communicated with for the other end of indoor heat exchanger and another root refrigerant among two refrigerants circulation house stewards.
During refrigeration mode, the first valve port of four-way change-over valve is communicated with the second valve port, the 3rd valve port is communicated with the 4th valve port, be that refrigerant is along compressor, outdoor heat exchanger, indoor heat exchanger, this route circulation of compressor, and the flow direction of refrigerant is identical with the direction of retaining valve during refrigeration mode, so the refrigerant of refrigeration mode directly flows through retaining valve without the outer organic electronic expansion valve in parallel with retaining valve, refrigerant throttling in the interior organic electronic expansion valve of indoor set.During heating mode, the first valve port of four-way change-over valve is communicated with the 3rd valve port, the second valve port is communicated with the 4th valve port, refrigerant is along compressor, indoor heat exchanger, outdoor heat exchanger, this line cycle of compressor, and the refrigerant during heating mode flows to and the retaining valve opposite direction, so refrigerant is without retaining valve but flow through outer organic electronic expansion valve and the throttling in parallel with retaining valve.
The outlet of the compressor of off-premises station is provided with measures discharge pressure P
1The first pressure transducer, the entrance of the compressor of off-premises station is provided with measures pressure of inspiration(Pi) P
2The second pressure transducer, the outlet of compressor is provided with measures delivery temperature T
1The first temperature inductor, the coil pipe of the outdoor heat exchanger of off-premises station middle part is provided with the coil pipe middle part temperature T of measuring chamber external heat exchanger
2The second temperature inductor, the coil pipe entrance of the indoor heat exchanger of indoor set is provided with the coil pipe temperature in T that measures indoor heat exchanger
3The 3rd temperature inductor, the coil pipe of indoor heat exchanger middle part is provided with the coil pipe middle part temperature T of measuring indoor heat exchanger
4The 4th temperature inductor, indoor set is provided with temperature T in the measuring chamber
5The 5th temperature inductor, the outlet of the coil pipe of indoor heat exchanger is provided with the coil pipe outlet temperature T that measures indoor heat exchanger
6The 6th temperature inductor.Each above-mentioned temperature inductor and pressure transducer all are electrically connected with the master controller of air-conditioning.
When VRF Air Conditioning System is installed the post debugging operation at the scene; often can be in the compressor outlet pressure fault of offering a high price; suction port of compressor newspaper low voltage failure; and cause the reason of above-mentioned fault a lot; anti-such as the retaining valve weldering; the pipeline weldering of air-conditioning unit is stifled; the amount that refrigerant adds is too much or not enough etc.; and retaining valve weldering counter be the possibility that causes the maximum probability of fault; but because retaining valve and pipeline welding; whether can only cut weld part open could detect retaining valve and weld instead; cutting process is wasted time and energy; and in case incision finds that weldering is not anti-; then lose more than gain, so prior art can only be by manually progressively investigating the various piece of whole system, through a series of loaded down with trivial details investigations; got rid of other fault; it is anti-just to be confirmed to be the retaining valve weldering, and again welding of at last cutting is so the detection method efficient of prior art is low; speed is slow; the testing process trouble.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of fast, outer machine retaining valve convenient, efficiently VRF Air Conditioning System anti-loaded detection method whether.
Technical solution of the present invention is, whether the outer machine retaining valve that a kind of VRF Air Conditioning System is provided anti-loaded detection method, and its concrete steps are as follows:
A, VRF Air Conditioning System is transferred to refrigeration mode, and with compressor start operation a period of time of off-premises station;
The discharge pressure P of the compressor outlet of each off-premises station that b, detection are moving
1, compressor outlet delivery temperature T
1, and detect the pressure of inspiration(Pi) P of the suction port of compressor of each off-premises station
2If discovery has the delivery temperature T of off-premises station
1〉=95 ℃ and pressure of inspiration(Pi) P
2≤ 0.3MPa, perhaps discovery has the delivery temperature T of off-premises station
1〉=95 ℃ and discharge pressure P
1〉=4MPa then enters next step, if do not meet the condition of this step then judge that outer machine retaining valve does not have anti-loaded;
C, detect temperature T in the middle part of the coil pipe of outdoor heat exchanger of the off-premises station that outer machine retaining valve may be anti-loaded
2, and judge, if meet the coil pipe middle part temperature T of outdoor heat exchanger
2The delivery temperature T of 〉=50 ℃ and off-premises station
1Deduct the coil pipe middle part temperature T of outdoor heat exchanger
2Difference 〉=30 ℃, then enter next step, if do not meet the condition of this step then judge that outer machine retaining valve does not have anti-loaded;
The coil pipe temperature in T of the indoor heat exchanger of each indoor set that d, measurement are moving
3, calculate again the mean value △ T of the coil pipe temperature in of each indoor heat exchanger
3, and judge, if the mean value △ T of the coil pipe temperature in of each indoor heat exchanger
3≤ 5 ℃, then enter next step, if do not meet the condition of this step then judge that outer machine retaining valve does not have anti-loaded;
E, judge in the aperture of organic electronic expansion valve whether be positioned between 200 ~ 400 steps, if be positioned at this interval then enter next step, if do not meet the condition of this step then judge that outer machine retaining valve does not have anti-loaded;
The coil pipe middle part temperature T of the indoor heat exchanger of whole indoor sets that f, measurement are moving
4With indoor temperature T
5, and calculate the mean value △ T of the coil pipe middle part temperature of indoor heat exchanger
4Mean value △ T with indoor temperature
5, judge again, if the mean value △ T of indoor temperature
5Deduct the mean value △ T of the coil pipe middle part temperature of indoor heat exchanger
4Difference greater than 0 ℃ and this difference≤4 ℃, then enter next step, if do not meet the condition of this step, judge that then outer machine retaining valve does not have anti-loaded;
The coil pipe outlet temperature T of the indoor heat exchanger of whole indoor sets that g, measurement are moving
6, and calculate the mean value △ T of the coil pipe outlet temperature of each indoor heat exchanger
6, judge again, if the mean value △ T of indoor temperature
5Deduct the mean value △ T of the coil pipe outlet temperature of indoor heat exchanger
6Difference greater than 0 ℃ and this difference≤2 ℃, judge that then the outer machine retaining valve of this off-premises station is anti-loaded, if do not meet the condition of this step, judge that then outer machine retaining valve does not have anti-loaded.
Adopt above method, the outer machine retaining valve of VRF Air Conditioning System of the present invention whether anti-loaded detection method compared with prior art has the following advantages:
Adopt above method, can be at short notice as quick in 10 clocks, accurately, whether the direct machine retaining valve of must going out welds anti-conclusion, speed is fast, efficient is high, measurement result is accurate, and, above method has utilized interior existing each temperature inductor of VRF Air Conditioning System and pressure transducer and master controller to realize fully, do not increase in addition any parts, can not increase the manufacturing cost of air-conditioning unit, in addition, the method utilizes VRF Air Conditioning System to detect voluntarily fully, need not as prior art, to rely on artificial investigation, more need not to cut open weld part and detect, so testing process is convenient.
As improvement, described a period of time of step a referred to more than 5 minutes, and namely compressor operating begins after 5 minutes to detect, by evidence, move regulate after 5 minutes more accurate, too early detection, fault is not obvious.
As improving again, described a period of time of step a refers to 5 minutes, be that 5 minutes these time points of compressor operating begin to detect, prove by repetition test, this time point was the most accurate in 5 minutes, too early detected, and situation is not obvious, the detection effect is bad, and the anti-loaded high voltage fault that causes of words retaining valve of regulating has too late caused harmful effect.
Description of drawings
Fig. 1 is the outer machine retaining valve systematic schematic diagram of anti-loaded detection method whether of VRF Air Conditioning System of the present invention.
Shown in the figure 1, outer machine retaining valve, 2, compressor, 3, outdoor heat exchanger, 4, indoor heat exchanger.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, whether the outer machine retaining valve of VRF Air Conditioning System of the present invention anti-loaded detection method, and its concrete steps are as follows.
A, VRF Air Conditioning System is adjusted to refrigeration mode, and with 2 start operation a period of times of compressor of off-premises station; A period of time referred to more than 5 minutes, preferred 5 minutes.
The discharge pressure P of compressor 2 outlets of each off-premises station that b, detection are moving
1, compressor 2 outlet delivery temperature T
1, and detect the pressure of inspiration(Pi) P of compressor 2 entrances of each off-premises station
2If discovery has the delivery temperature T of off-premises station
1〉=95 ℃ and pressure of inspiration(Pi) P
2≤ 0.3MPa, perhaps discovery has the delivery temperature T of off-premises station
1〉=95 ℃ and discharge pressure P
1〉=4MPa then enters next step, if do not meet the condition of this step then judge that outer machine retaining valve 1 does not have anti-loaded; In particular, Rule of judgment has two, and condition 1 is the delivery temperature T of off-premises station
1〉=95 ℃ and pressure of inspiration(Pi) P
2≤ 0.3MPa, condition 2 is the delivery temperature T of off-premises station
1〉=95 ℃ and discharge pressure P
1〉=4MPa satisfies two conditions simultaneously or only the outer machine retaining valve 1 of the off-premises station of one of satisfied two conditions may be anti-loaded, so enter next step, if do not satisfy any one condition, judges that then outer machine retaining valve 1 does not have anti-loaded.
C, detect temperature T in the middle part of the coil pipe of outdoor heat exchanger 3 of the off-premises station that outer machine retaining valve 1 may be anti-loaded
2, and judge, if meet the coil pipe middle part temperature T of outdoor heat exchanger 3
2〉=50 ℃ and retaining valve 1 may be anti-loaded the delivery temperature T of off-premises station
1Deduct the coil pipe middle part temperature T of outdoor heat exchanger 3
2Difference 〉=30 ℃, then enter next step, if do not meet the condition of this step then judge that outer machine retaining valve 1 does not have anti-loaded.
The coil pipe temperature in T of the indoor heat exchanger 4 of each indoor set that d, measurement are moving
3, calculate again the mean value △ T of the coil pipe temperature in of each indoor heat exchanger 4 that is moving
3, and judge, if the mean value △ T of the coil pipe temperature in of each indoor heat exchanger 4
3≤ 5 ℃, then enter next step, if do not meet the condition of this step then judge that outer machine retaining valve 1 does not have anti-loaded.
E, judge in the aperture of organic electronic expansion valve whether be positioned between 200 ~ 400 steps, if be positioned at this interval then enter next step, if do not meet the condition of this step then judge that outer machine retaining valve 1 does not have anti-loaded.
The coil pipe middle part temperature T of the indoor heat exchanger 4 of whole indoor sets that f, measurement are moving
4With indoor temperature T
5, and calculate the mean value △ T of the coil pipe middle part temperature of each indoor heat exchanger 4 that is moving
4The mean value △ T of the indoor temperature in each room, indoor set place that is moving
5, judge again, if the mean value △ T of indoor temperature
5Deduct the mean value △ T of the coil pipe middle part temperature of indoor heat exchanger 4
4Difference greater than 0 ℃ and this difference≤4 ℃, then enter next step, if do not meet the condition of this step, judge that then outer machine retaining valve 1 does not have anti-loaded.
The coil pipe outlet temperature T of the indoor heat exchanger 4 of whole indoor sets that g, measurement are moving
6, and calculate the mean value △ T of the coil pipe outlet temperature of each indoor heat exchanger 4 that is moving
6, judge again, if the mean value △ T of indoor temperature
5Deduct the mean value △ T of the coil pipe outlet temperature of indoor heat exchanger 4
6Difference greater than 0 ℃ and this difference≤2 ℃, judge that then the outer machine retaining valve 1 of this off-premises station is anti-loaded, if do not meet the condition of this step, judge that then outer machine retaining valve 1 does not have anti-loaded.
Claims (3)
1. the outer machine retaining valve of a VRF Air Conditioning System anti-loaded detection method whether, it is characterized in that: its concrete steps are as follows:
A, VRF Air Conditioning System is transferred to refrigeration mode, and with compressor (2) start operation a period of time of off-premises station;
The discharge pressure P of compressor (2) outlet of each off-premises station that b, detection are moving
1, compressor (2) outlet delivery temperature T
1, and detect the pressure of inspiration(Pi) P of compressor (2) entrance of each off-premises station
2, judge, if find to have the delivery temperature T of off-premises station
1〉=95 ℃ and pressure of inspiration(Pi) P
2≤ 0.3MPa, perhaps discovery has the delivery temperature T of off-premises station
1〉=95 ℃ and discharge pressure P
1〉=4MPa then enters next step, if do not meet the condition of this step then judge that outer machine retaining valve (1) does not have anti-loaded;
C, detect temperature T in the middle part of the coil pipe of outdoor heat exchanger (3) of the off-premises station that outer machine retaining valve (1) may be anti-loaded
2, and judge, if meet the coil pipe middle part temperature T of outdoor heat exchanger (3)
2The delivery temperature T of 〉=50 ℃ and off-premises station
1Deduct the coil pipe middle part temperature T of outdoor heat exchanger (3)
2Difference 〉=30 ℃, then enter next step, if do not meet the condition of this step then judge that outer machine retaining valve (1) does not have anti-loaded;
The coil pipe temperature in T of the indoor heat exchanger (4) of each indoor set that d, measurement are moving
3, calculate again the mean value △ T of the coil pipe temperature in of each indoor heat exchanger (4)
3, and judge, if the mean value △ T of the coil pipe temperature in of each indoor heat exchanger (4)
3≤ 5 ℃, then enter next step, if do not meet the condition of this step then judge that outer machine retaining valve (1) does not have anti-loaded;
E, judge in the aperture of organic electronic expansion valve whether be positioned between 200 ~ 400 steps, if be positioned at this interval then enter next step, if do not meet the condition of this step then judge that outer machine retaining valve (1) does not have anti-loaded;
The coil pipe middle part temperature T of the indoor heat exchanger (4) of whole indoor sets that f, measurement are moving
4With indoor temperature T
5, and calculate the mean value △ T of the coil pipe middle part temperature of indoor heat exchanger (4)
4Mean value △ T with indoor temperature
5, judge again, if the mean value △ T of indoor temperature
5Deduct the mean value △ T of the coil pipe middle part temperature of indoor heat exchanger (4)
4Difference greater than 0 ℃ and this difference≤4 ℃, then enter next step, if do not meet the condition of this step, judge that then outer machine retaining valve (1) does not have anti-loaded;
The coil pipe outlet temperature T of the indoor heat exchanger (4) of whole indoor sets that g, measurement are moving
6, and calculate the mean value △ T of the coil pipe outlet temperature of each indoor heat exchanger (4)
6, judge again, if the mean value △ T of indoor temperature
5Deduct the mean value △ T of the coil pipe outlet temperature of indoor heat exchanger (4)
6Difference greater than 0 ℃ and this difference≤2 ℃, judge that then the outer machine retaining valve (1) of this off-premises station is anti-loaded, if do not meet the condition of this step, judge that then outer machine retaining valve (1) does not have anti-loaded.
2. the outer machine retaining valve of VRF Air Conditioning System according to claim 1 anti-loaded detection method whether, it is characterized in that: described a period of time of step a referred to more than 5 minutes.
3. the outer machine retaining valve of VRF Air Conditioning System according to claim 2 anti-loaded detection method whether, it is characterized in that: described a period of time of step a refers to 5 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210404387.8A CN102967450B (en) | 2012-10-23 | 2012-10-23 | Method for detecting whether outdoor unit check valve of split type air conditioning unit is installed reversely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210404387.8A CN102967450B (en) | 2012-10-23 | 2012-10-23 | Method for detecting whether outdoor unit check valve of split type air conditioning unit is installed reversely |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102967450A true CN102967450A (en) | 2013-03-13 |
| CN102967450B CN102967450B (en) | 2015-04-08 |
Family
ID=47797743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210404387.8A Active CN102967450B (en) | 2012-10-23 | 2012-10-23 | Method for detecting whether outdoor unit check valve of split type air conditioning unit is installed reversely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102967450B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105083312A (en) * | 2015-07-02 | 2015-11-25 | 石家庄国祥运输设备有限公司 | Method for preventing low-voltage faults of compressor of air-conditioning system of rail vehicle |
| CN104595568B (en) * | 2014-12-25 | 2017-11-21 | 珠海格力电器股份有限公司 | Detection method and device for air conditioner water valve |
| CN107747789A (en) * | 2017-08-30 | 2018-03-02 | 青岛海尔空调器有限总公司 | The fault detect of air-conditioning and its supercooling tube group and processing method |
| WO2019042286A1 (en) * | 2017-08-30 | 2019-03-07 | 青岛海尔空调器有限总公司 | Air conditioner and fault detection and handling method for super-cooling tubing set thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03205531A (en) * | 1989-04-10 | 1991-09-09 | Flow Design Inc | Valve testing stopper |
| JPH07190218A (en) * | 1993-12-27 | 1995-07-28 | F M Valve Seisakusho:Kk | Check valve device |
| CN1193105A (en) * | 1997-03-12 | 1998-09-16 | 三星电子株式会社 | Device for testing property of outdoor unit of air-conditioner |
| US6216727B1 (en) * | 1999-03-08 | 2001-04-17 | Flologic, Inc. | Water flow sensing device |
| CN1487247A (en) * | 2003-07-31 | 2004-04-07 | 上海交通大学 | Cooling air conditioner unit fault simulating and diagnosing system |
| CN201387379Y (en) * | 2009-04-01 | 2010-01-20 | 顺德职业技术学院 | Test device for testing quality and flow properties of refrigeration agent of throttling mechanism |
| KR101224192B1 (en) * | 2012-04-06 | 2013-01-21 | 유종훈 | High temperature high pressure valve test device |
-
2012
- 2012-10-23 CN CN201210404387.8A patent/CN102967450B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03205531A (en) * | 1989-04-10 | 1991-09-09 | Flow Design Inc | Valve testing stopper |
| JPH07190218A (en) * | 1993-12-27 | 1995-07-28 | F M Valve Seisakusho:Kk | Check valve device |
| CN1193105A (en) * | 1997-03-12 | 1998-09-16 | 三星电子株式会社 | Device for testing property of outdoor unit of air-conditioner |
| US6216727B1 (en) * | 1999-03-08 | 2001-04-17 | Flologic, Inc. | Water flow sensing device |
| CN1487247A (en) * | 2003-07-31 | 2004-04-07 | 上海交通大学 | Cooling air conditioner unit fault simulating and diagnosing system |
| CN201387379Y (en) * | 2009-04-01 | 2010-01-20 | 顺德职业技术学院 | Test device for testing quality and flow properties of refrigeration agent of throttling mechanism |
| KR101224192B1 (en) * | 2012-04-06 | 2013-01-21 | 유종훈 | High temperature high pressure valve test device |
Non-Patent Citations (1)
| Title |
|---|
| 朱广庆: "空调单向阀引起的特殊故障", 《家电检修技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595568B (en) * | 2014-12-25 | 2017-11-21 | 珠海格力电器股份有限公司 | Detection method and device for air conditioner water valve |
| CN105083312A (en) * | 2015-07-02 | 2015-11-25 | 石家庄国祥运输设备有限公司 | Method for preventing low-voltage faults of compressor of air-conditioning system of rail vehicle |
| CN107747789A (en) * | 2017-08-30 | 2018-03-02 | 青岛海尔空调器有限总公司 | The fault detect of air-conditioning and its supercooling tube group and processing method |
| WO2019042287A1 (en) * | 2017-08-30 | 2019-03-07 | 青岛海尔空调器有限总公司 | Air conditioner and fault detection and handling method for super-cooling tubing set thereof |
| WO2019042286A1 (en) * | 2017-08-30 | 2019-03-07 | 青岛海尔空调器有限总公司 | Air conditioner and fault detection and handling method for super-cooling tubing set thereof |
| CN107747789B (en) * | 2017-08-30 | 2019-11-05 | 青岛海尔空调器有限总公司 | The fault detection and processing method of air-conditioning and its supercooling tube group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102967450B (en) | 2015-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103293010B (en) | Air conditioner refrigerant detection method, device and system | |
| CN102767886B (en) | Method for judging proper amount of refrigerants for multi-united air conditioning unit | |
| CN103216908B (en) | Control method for outdoor fan in refrigeration of variable frequency multi-split air-conditioning unit | |
| CN102914027B (en) | Control method for preventing refrigerant of outdoor unit from bias flowing during refrigeration of multi-split air-conditioning unit | |
| CN102645327B (en) | Method for detecting welding blockage of electronic outdoor unit expansion valves of multi-coupled air-conditioning unit | |
| CN102278804B (en) | Control method for preventing bias flow of refrigerants during heating of multi-connected air conditioning unit | |
| CN103791588B (en) | Solve the control method that VRF Air Conditioning System cold-producing medium is on the low side | |
| CN102914026B (en) | Control method for preventing refrigerant of outdoor unit of multi-linkage air conditioning unit from deflecting during heating | |
| CN102818406B (en) | Refrigerant recovery device and method of heat pump of air-conditioner and outdoor unit of air-conditioner | |
| CN105065249B (en) | Compressor performance detection device, air conditioning system with same and control method | |
| CN101231016A (en) | Device and method for connecting and detecting pipe of multi-connected air conditioner | |
| CN105571075B (en) | A kind of control method of water-cooled multi-connected machine return-air increasing enthalpy | |
| CN104729025B (en) | The dynamic equilibrium control method of refrigerant when VRF Air Conditioning System is freezed | |
| CN102967450B (en) | Method for detecting whether outdoor unit check valve of split type air conditioning unit is installed reversely | |
| CN103792103A (en) | Testing method of multi-connecting type air conditioning unit | |
| CN107062538A (en) | A kind of air conditioner intelligent detecting method | |
| CN105627612A (en) | Outdoor unit refrigerant pipeline system, air conditioner and refrigeration control method for air conditioner | |
| CN105402936A (en) | Air conditioner water heater and refrigerant leakage detecting method and device of air conditioner water heater | |
| CN107560105B (en) | Method and device for judging connection pipe error of four-way valve and machine readable storage medium | |
| CN105318491A (en) | Air conditioner control method and device | |
| CN104535884B (en) | Judge domestic multi-connection machine indoor set data wire whether the method for wrong | |
| CN102235722B (en) | Explosionproof control method for multi-connected air conditioning unit during refrigerant recovery | |
| CN103791596B (en) | Judge the method whether the heat detector resistance of the combined air conditioners of refrigeration mode offsets | |
| CN105526676A (en) | Method for judging whether liquid is accumulated in indoor heat exchangers of multi-connected units in heating process | |
| CN105571076A (en) | Control method for refrigerating of water-cooled multi-split air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee after: NINGBO AUX ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo AUX Electric Co., Ltd. |