CN105065249B - Compressor performance detection device, air conditioning system with same and control method - Google Patents
Compressor performance detection device, air conditioning system with same and control method Download PDFInfo
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- CN105065249B CN105065249B CN201510550873.4A CN201510550873A CN105065249B CN 105065249 B CN105065249 B CN 105065249B CN 201510550873 A CN201510550873 A CN 201510550873A CN 105065249 B CN105065249 B CN 105065249B
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- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000004378 air conditioning Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005057 refrigeration Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 238000012360 testing method Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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Abstract
The invention relates to a compressor performance detection device, which comprises a compressor (1), an outdoor heat exchanger (2), an indoor heat exchanger (3), an exhaust pipe temperature sensing bulb (4) arranged at the outlet of the compressor, an outdoor environment temperature sensing bulb (5) used for detecting the outdoor environment temperature, an indoor environment temperature sensing bulb (6) used for detecting the indoor environment temperature, a first detection device used for detecting the low-pressure saturation temperature Te of an air conditioning system and a second detection device used for detecting the high-pressure saturation temperature Td of the air conditioning system And (4) effective judgment conditions. The invention also relates to an air conditioning system with the device and a control method.
Description
Technical field
The invention belongs to air-conditioning technical field, and in particular to a kind of compressor performance detection means, the sky with the device
Adjusting system and control method.
Background technology
Existing multi-online air-conditioning system, when compressor air suction mouthful is dirty stifled, seldom can judge specific failure in time simultaneously
Pre-alarm and/or prompting client, typically all wait compressor just to be found after having damaged in time, or simply simple detection
Compressor exhaust temperature, to judge whether system is abnormal.But such detection means can not judge system refrigerant reduce or
The situation of the dirty stifled grade of compressor air suction mouthful.
Because above-mentioned existing air-conditioning system there is a situation where accurately detect whether compressor air suction mouthful is dirty stifled, thus
Can not accurately detect the defect of compressor performance, research and design of the present invention go out a kind of new compressor performance detection means and
Air-conditioning system and control method with the device.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome can not accurately detect compressor air suction in the prior art
Mouthful whether dirty stifled situation, thus the defect of compressor performance can not be accurately detected, so as to provide a kind of new compressor
Can detection means, air-conditioning system and control method with the device.
A kind of compressor performance detection means that the present invention is provided, including compressor, outdoor heat exchanger, indoor heat exchanger,
Its also include being arranged at the blast pipe temperature-sensitive bag of compressor outlet, the outdoor environment temperature-sensitive bag for detecting outdoor environment temperature,
Indoor environment temperature-sensitive bag for detecting indoor environment temperature, and for detecting the first of air-conditioning system low pressure saturation temperature Te
Detection means and the second detection device for detecting air-conditioning system high pressure saturation temperature Td.
Preferably, first detection means includes the low pressure sensor being arranged on the compressor air suction lateral line,
The second detection device includes the high pressure sensor being arranged on the compressor air-discharging lateral line.
Preferably, the indoor heat exchanger is at least one.
The present invention also provides a kind of air-conditioning system, and it includes foregoing compressor performance detection means, and it also includes electricity
Sub- expansion valve, the electric expansion valve is arranged on the connecting line between the indoor heat exchanger and the outdoor heat exchanger.
Preferably, the air-conditioning system includes outdoor unit and indoor set.
Preferably, the outdoor unit includes the compressor, the outdoor heat exchanger and four-way valve.
Preferably, the indoor set includes the indoor heat exchanger and electronic expansion valve of indoor unit.
Preferably, the air-conditioner set is source pump or refrigeration unit.
The present invention also provides a kind of compressor control method, and it is using foregoing compressor performance detection means to compressor
It is controlled.
Preferably, in compressor operating, according to outdoor environment temperature T1, indoor environment temperature T2 and system low-voltage saturation
Temperature Te, system high pressure saturation temperature Td, delivery temperature T3, judge that whether dirty compressor is stifled.
Preferably, if the above-mentioned result judged is yes, alarm is started immediately, and point out client to be repaired.
Preferably, including step：When system is heated, detect temperatures above parameter and be compared, as " T1-Te≤x
DEG C " and " Td-T2≤y DEG C " and " T3 >=z DEG C " three conditions simultaneously when meeting；Now judge " compressor is seriously dirty stifled ",
Compressor is now closed down, and shows fault-signal and the signal that need to be handled on the display apparatus, x, y, z here is setting pair
Compare temperature.
Preferably, when cooling system, detect temperatures above parameter and be compared, as " T2-Te≤x DEG C " and " Td-T1
≤ y DEG C " and " T3 >=z DEG C " three conditions simultaneously when meeting；Judge " compressor is seriously dirty stifled ", and close down compressor, and
Fault-signal and the signal that need to be handled are shown on the display apparatus, and x, y, z here is setting reduced temperature.
A kind of compressor performance detection means that the present invention is provided has the advantages that：
1. according to the compressor performance detection means of the present invention, it can judge that compressor whether there is accurately and in time
The dirty stifled situation of air entry, so as to judge whether compressor operating is abnormal, is due to which kind of reason is caused accurately and in time
It is abnormal, reach the effect of accurate detection compressor performance.
2. according to the compressor performance detection means of the present invention, it can be carried out accordingly according to testing result for the rear stage
Operation (including carry out shutdown operation and show failure and need the signal of maintenance process) provides accurate and effective Rule of judgment.
Brief description of the drawings
Fig. 1 is the structural representation of the air-conditioning system with compressor performance detection means of the present invention.
Reference is expressed as in figure：
1-compressor, 2-outdoor heat exchanger, 3-indoor heat exchanger, 4-blast pipe temperature-sensitive bag, 5-outdoor environment temperature-sensitive
Bag, 6-indoor environment temperature-sensitive bag, 7-electric expansion valve, 8-indoor set, 9-four-way valve, 10-electronic expansion valve of indoor unit,
11-gas-liquid separation device, the 12-the first stop valve, the 13-the second stop valve, 14-low pressure sensor, 15-high pressure sensor,
16-shell top temperature-sensitive bag.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to protection scope of the present invention.
As shown in figure 1, the present invention provides a kind of compressor performance detection means, including compressor 1, outdoor heat exchanger 2, room
Interior heat exchanger 3, it also includes being arranged at the blast pipe temperature-sensitive bag 4 of compressor outlet, the outdoor for detecting outdoor environment temperature
Environment temperature-sensitive bag 5, the indoor environment temperature-sensitive bag 6 for detecting indoor environment temperature, and for detecting that air-conditioning system low pressure is satisfied
Second with temperature Te the first temperature-detecting device (not shown) and for detecting air-conditioning system high pressure saturation temperature Td
Temperature-detecting device (not shown).
According to the compressor performance detection means of the present invention, by setting the temperature-sensitive bag and temperature detection of above-mentioned many places to fill
Put, can accurately and timely detect outdoor environment temperature T1, indoor environment temperature T2 and system low-voltage saturation temperature Te, system
High pressure saturation temperature Td, delivery temperature T3, and by the single temperature value among above-mentioned multiple temperature values and sets target temperature value
Between compare, and/or will specify two temperature values between difference and sets target difference between be compared to each other, can in time,
Compressor is judged exactly with the presence or absence of the dirty stifled situation (such as the blocking caused due to foul) of air entry, so that and
When, judge whether compressor operating abnormal, is due to the exception which kind of reason is caused exactly, so as to reach accurate detection pressure
The effect of contracting machine performance；Can also accordingly be operated according to testing result for the rear stage (including carry out shutdown operation simultaneously
Show failure and need the signal of maintenance process) accurate and effective Rule of judgment is provided.
Preferably, first detection means includes the low pressure sensor being arranged on the air-breathing lateral line of compressor 1
14, corresponding system low-voltage is calculated by the pressure value detected installed in the low pressure sensor 14 of the suction side of compressor 1 and satisfied
With temperature Te；The second detection device includes the high pressure sensor 15 being arranged on the exhaust of compressor 1 lateral line, passes through
The pressure value detected installed in the high pressure sensor 15 of the exhaust side of compressor 1 calculates corresponding system high pressure saturation temperature
Td。
Preferably, the indoor heat exchanger 3 is at least one (i.e. one or more).By setting multiple indoor heat exchangers 3
For indoor many places the place exchanged heat can be needed to be exchanged heat (or heat exchange), set 1 heat exchanger effectively to save
About cost, above-mentioned different schemes can be selected according to different actual demands.
Preferably, when the indoor heat exchanger 3 is multiple, temperature-detecting device is arranged on the indoor heat exchanger 3
In at least one.Temperature detection can be set to fill the indoor heat exchanger of required detection (or conventional) as needed by this kind of scheme
Put.Temperature-detecting device is preferably temperature-sensitive bag or temperature measuring set or thermometer etc..
Present invention also offers a kind of air-conditioning system, it includes foregoing compressor performance detection means, and it also includes
Electric expansion valve 7, the electric expansion valve 7 is arranged at the connecting tube between the indoor heat exchanger 3 and the outdoor heat exchanger 2
Lu Shang.According to the air-conditioning system with aforementioned compressor device for detecting performance of the present invention, by the temperature-sensitive for setting above-mentioned many places
Bag and temperature-detecting device, can accurately and timely detect outdoor environment temperature T1, indoor environment temperature T2 and system low-voltage
Saturation temperature Te, system high pressure saturation temperature Td, delivery temperature T3, and by above-mentioned multiple temperature values individually or the knot of difference two-by-two
It is compared to each other between fruit and target temperature value, can judges that compressor is blocked up (for example with the presence or absence of air entry is dirty accurately and in time
Blocking caused due to foul etc.) situation, so as to judge whether compressor operating abnormal accurately and in time, what is due to
The exception that reason is caused is planted, so as to reach the effect of accurate detection compressor performance；Can also for the rear stage according to testing result
And carry out operation accordingly (including carry out shutdown operation and show failure and need the signal of maintenance process) and provide accurate and effective
Rule of judgment.Set electric expansion valve 7 to enable to the air-conditioning system to form a complete refrigeration in above-mentioned pipeline to follow
Ring.
Preferably, the air-conditioning system includes outdoor unit and indoor set 8.By the way that air-conditioning system is set to include outdoor unit
Effectively air-conditioning system can be separated from structure with indoor set 8, realize evaporation endothermic, condense the effect and purpose of heat release.
Preferably, the outdoor unit includes the compressor 1, the outdoor heat exchanger 2 and four-way valve 9.Compressor 1 is used to
Refrigerant is compressed, outdoor heat exchanger 2 is to carrying out heat exchange between outdoor environment, four-way valve 9 is arranged on compressor
Gas exhaust piping and suction line on, to by after compression refrigerant import condenser (can be outdoor heat exchanger, can also
It is indoor heat exchanger), it (can be outdoor heat exchanger or indoor heat exchange that compressor air suction pipeline is connected with evaporator
Device), it can be realized to cutting between the indoor two kinds of difference in functionalitys for being freezed and being heated by the conversion regulation of four-way valve 9
Change, reached the purpose of multi-function air conditioner.
Preferably, the indoor set 8 includes the indoor heat exchanger 3 and electronic expansion valve of indoor unit 10.Indoor heat exchanger 3
To carrying out heat exchange between indoor environment, electronic expansion valve of indoor unit 10 is swollen to carry out certain throttling to refrigerant
It is swollen, the burden of electric expansion valve 7 is reduced in high refrigeration flow.
Preferably, the air-conditioner set is source pump.Now by effective regulation of four-way valve 9 compressor is discharged
Refrigerant pass through indoor heat exchanger heat release, absorb heat, be eventually returned in compressor through outdoor heat exchanger after throttling expansion, be
Interior effectively provides heat.
Preferably, the air-conditioner set is refrigeration unit.The row of compressor 1 is now caused by effective regulation of four-way valve 9
The refrigerant gone out passes through the heat release of outdoor heat exchanger 2, is absorbed heat after throttling expansion through indoor heat exchanger 3, is eventually returned to compressor
In, it is that interior effectively provides cold.
Preferably, gas-liquid separation device 11 is provided with the compressor air suction pipeline, effectively to realize gas-liquid separation
Effect, it is ensured that enter compressor inlet gas effective mass dryness fraction.
Preferably, the first stop valve 12 is additionally provided with the pipeline between the indoor set 8 and the four-way valve 9,
The second stop valve 13 is additionally provided with pipeline between the indoor set 8 and the electric expansion valve 7, to in above-mentioned pipeline
Fluid be controlled.
Preferably, low pressure sensor 14 is additionally provided with the inlet ductwork of the gas-liquid separation device 11, to warp
Detected by the pressure (low-pressure side) of the refrigerant after evaporator heat absorption evaporation.Also set on the exhaust outlet of compressor pipeline
High pressure sensor 15 is equipped with, to being detected via the refrigerant pressure (high-pressure side) after compressor compresses.In the pressure
Shell top temperature-sensitive bag 16 is additionally provided with the shell top of contracting machine casing, is detected to the temperature to the compressor case shell top.
The present invention also provides a kind of compressor control method, and it is using foregoing compressor performance detection means to compressor
It is controlled.It is above-mentioned by setting according to the compressor control method with aforementioned compressor device for detecting performance of the present invention
The temperature-sensitive bag and temperature-detecting device of many places, can accurately and timely detect outdoor environment temperature T1, indoor environment temperature T2
With system low-voltage saturation temperature Te, system high pressure saturation temperature Td, delivery temperature T3, and by above-mentioned multiple temperature values individually or two
It is compared to each other between the result and target temperature value of two differences, can judges that compressor whether there is air-breathing accurately and in time
The dirty stifled situation (such as the blocking caused due to foul) of mouth, so as to judge whether compressor operating is different accurately and in time
Often, it is due to exception which kind of reason is caused, so as to reach the effect of accurate control compressor；Can also for the rear stage according to inspection
Survey result and operated accordingly (including carry out shutdown operation and show failure and need the signal of maintenance process) provide it is accurate,
Effective Rule of judgment.
Preferably, in compressor operating, according to outdoor environment temperature T1, indoor environment temperature T2 and system low-voltage saturation
Temperature Te, system high pressure saturation temperature Td, delivery temperature T3, judge compressor with the presence or absence of dirty stifled (such as because foul is caused
Blocking etc.).It can judge that compressor is dirty stifled (such as due to card that foul is caused with the presence or absence of air entry accurately and in time
Block up) situation, so as to judge whether compressor operating abnormal accurately and in time, so as to reach accurate control compressor
Effect.
Preferably, before compressor damage, if the above-mentioned result judged is yes, alarm is started immediately, and point out client
It need to be repaired；If the above-mentioned result judged is no, normally run according to the running of compressor.Entered according to judged result
Row accurately performs operating procedure, it is ensured that the safe operation of compressor.
Preferably, when system is heated (now outdoor heat exchanger makees evaporator, and indoor heat exchanger makees condenser), detect with
Upper temperature parameter is simultaneously compared, and when meeting condition a. " T1-Te≤x DEG C ", now illustrates system low-voltage saturation temperature Te and room
External environment temperature T1 is sufficiently close to, the evaporation endothermic DeGrain of evaporator；And condition b. " Td-T2≤y DEG C " ought be met, this
When illustrate that system high pressure saturation temperature Td is sufficiently close to indoor environment temperature T2, the condensation exothermal effect of condenser is also failed to understand
It is aobvious；And when meeting condition c. " T3 >=z DEG C ", illustrate that compressor exhaust temperature T3 is too high (after air entry is stifled, without refrigerant or only
A small amount of refrigerant enters compressor and radiated to compressor electric motor, and shell top (exhaust) temperature of compressor can be caused very high)；When above-mentioned 3
Individual condition is met simultaneously when, " compressor is seriously dirty stifled " is now judged, x, y, z here is setting reduced temperature, its
Value condition is：X span be 0~5 between；It is preferred that x=3, y span be 0~5 between, preferably y=3；z
Span be 108~118 between, preferably z=113.If the b and/or c that now only has ready conditions is met, it is more likely that
It is due to caused by lack of refrigerant in air-conditioning system causes, can not the concrete reason that occurs of accurate response its failure.
Judge after specific fault occurrence reason, it is necessary to carry out corresponding control operation：Compressor is closed down, and is shown on the display apparatus
Fault-signal and the signal that need to be handled, i.e., point out " compressor air suction mouthful automatically preferably on interior machine manual operator or remote computer
It is dirty stifled, please handle ".
Preferably, when cooling system (now indoor heat exchanger makees evaporator, and outdoor heat exchanger makees condenser), detect with
Upper temperature parameter is simultaneously compared, and when meeting condition a. " T2-Te≤x DEG C ", now illustrates system low-voltage saturation temperature Te and room
Interior environment temperature T2 is sufficiently close to, the evaporation endothermic DeGrain of its evaporator；And condition b. " Td-T1≤y DEG C " ought be met,
Now illustrate that system high pressure saturation temperature Td is sufficiently close to outdoor environment temperature T1, the condensation exothermal effect of condenser is also failed to understand
It is aobvious；And when meeting condition c. " T3 >=z DEG C ", illustrate that compressor exhaust temperature T3 is too high (after air entry is stifled, without refrigerant or only
A small amount of refrigerant enters compressor and radiated to compressor electric motor, and shell top (exhaust) temperature of compressor can be caused very high)；When above-mentioned 3
Individual condition is met simultaneously when, " compressor is seriously dirty stifled " is now judged, x, y, z here is setting reduced temperature, its
Value condition is：X span be 0~5 between；It is preferred that x=3, y span be 0~5 between, preferably y=3；z
Span be 108~118 between, preferably z=113.If the b and/or c that now only has ready conditions is met, it is more likely that
It is due to caused by lack of refrigerant in air-conditioning system causes, can not the concrete reason that occurs of accurate response its failure.
Judge after specific fault occurrence reason, it is necessary to carry out corresponding control operation, that is, to close down compressor, and show on the display apparatus
On fault-signal and the signal that need to be handled, interior machine manual operator or remote computer automatically prompting " compressor air suction mouthful is dirty stifled, please
Processing ".
Those skilled in the art is it is easily understood that on the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.With
Only it is the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not
On the premise of departing from the technology of the present invention principle, some improvement and modification can also be made, these improvement and modification also should be regarded as this
The protection domain of invention.
Claims (10)
1. a kind of compressor performance detection means, including compressor (1), outdoor heat exchanger (2), indoor heat exchanger (3), its feature
It is：Also include being arranged at the blast pipe temperature-sensitive bag (4) of compressor outlet, the outdoor environment for detecting outdoor environment temperature T1
Temperature-sensitive bag (5), the indoor environment temperature-sensitive bag (6) for detecting indoor environment temperature T2, and for detecting air-conditioning system low pressure
Saturation temperature Te the first detection means and the second detection device for detecting air-conditioning system high pressure saturation temperature Td：
When system is heated, detect temperatures above parameter and be compared：As " T1-Te≤x DEG C " and " Td-T2≤y DEG C " and " T3
>=z DEG C " three conditions when meeting simultaneously, judge " compressor is seriously dirty to be blocked up ", now close down compressor, and in display device
Upper display fault-signal and the signal that need to be handled, x, y, z here is setting reduced temperature, and T3 is delivery temperature；
When cooling system, detect temperatures above parameter and be compared：As " T2-Te≤x DEG C " and " Td-T1≤y DEG C " and " T3
>=z DEG C " three conditions when meeting simultaneously, judge " compressor is seriously dirty to be blocked up ", now close down compressor, and in display device
Upper display fault-signal and the signal that need to be handled, x, y, z here is setting reduced temperature, and T3 is delivery temperature.
2. a kind of compressor performance detection means according to claim 1, it is characterised in that：The first detection means bag
The low pressure sensor (14) being arranged on the compressor (1) air-breathing lateral line is included, the second detection device includes being arranged at
High pressure sensor (15) on compressor (1) the exhaust lateral line.
3. a kind of compressor performance detection means according to one of claim 1-2, it is characterised in that：The indoor heat exchange
Device (3) is at least one.
4. a kind of air-conditioning system, it is characterised in that：Compressor performance detection means including any one of claim 1-3, its
Also include being arranged at the electric expansion valve between the indoor heat exchanger (3) and the outdoor heat exchanger (2) on connecting line
(7)。
5. a kind of air-conditioning system according to claim 4, it is characterised in that：The air-conditioning system includes outdoor unit and interior
Machine (8).
6. a kind of air-conditioning system according to claim 5, it is characterised in that：The outdoor unit include the compressor (1),
The outdoor heat exchanger (2) and four-way valve (9).
7. a kind of air-conditioning system according to claim 5 or 6, it is characterised in that：The indoor set (8) includes the interior
Heat exchanger (3) and electronic expansion valve of indoor unit (10).
8. a kind of air-conditioning system according to one of claim 4-6, it is characterised in that：The air-conditioning system is source pump
Or refrigeration unit.
9. a kind of compressor control method, it is characterised in that：Usage right requires the compressor performance detection dress described in one of 1-3
Put and compressor is controlled, in compressor operating, according to outdoor environment temperature T1, indoor environment temperature T2 and system low-voltage
Saturation temperature Te, system high pressure saturation temperature Td, delivery temperature T3, judge that compressor whether there is dirty stifled situation, step is such as
Under：
When system is heated, detect temperatures above parameter and be compared：As " T1-Te≤x DEG C " and " Td-T2≤y DEG C " and " T3
>=z DEG C " three conditions when meeting simultaneously, judge " compressor is seriously dirty to be blocked up ", now close down compressor, and in display device
Upper display fault-signal and the signal that need to be handled, x, y, z here is setting reduced temperature；
When cooling system, detect temperatures above parameter and be compared：As " T2-Te≤x DEG C " and " Td-T1≤y DEG C " and " T3
>=z DEG C " three conditions when meeting simultaneously, judge " compressor is seriously dirty to be blocked up ", now close down compressor, and in display device
Upper display fault-signal and the signal that need to be handled, x, y, z here is setting reduced temperature.
10. a kind of compressor control method according to claim 9, it is characterised in that：If the result of above-mentioned judgement is
It is to start alarm immediately, and point out client to be repaired.
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| CN105509242B (en) * | 2015-12-23 | 2018-09-25 | 宁波奥克斯电气股份有限公司 | A kind of refrigerant super-addition control method for air conditioner |
| CN108895611B (en) * | 2018-05-28 | 2020-10-30 | 宁波奥克斯电气股份有限公司 | A method and device for detecting dirt blockage in a condenser |
| CN109059208B (en) * | 2018-06-15 | 2021-04-06 | 上海美控智慧建筑有限公司 | Detection method, detection device and detection system for air conditioner host parameters |
| CN109323365B (en) * | 2018-09-30 | 2021-11-19 | 广东美的制冷设备有限公司 | Method and apparatus for diagnosing blocking fault of air conditioner, air conditioner and storage medium |
| CN109975052B (en) * | 2019-04-12 | 2023-11-10 | 河北磐睿能源科技有限公司 | An air conditioning refrigeration performance testing system and method under no cooling load state |
| CN112879277B (en) * | 2019-11-29 | 2023-03-14 | 广东美芝制冷设备有限公司 | Testing method and testing device for electric appliance and compressor |
| CN115077950A (en) * | 2021-03-10 | 2022-09-20 | 陈新文 | Universal heat pump air conditioning system performance detection device and detection method thereof |
| CN113091207B (en) * | 2021-05-10 | 2022-03-29 | 宁波奥克斯电气股份有限公司 | Air return port blockage judging method and device and air conditioner |
| CN113551369B (en) * | 2021-07-09 | 2022-04-26 | 珠海格力电器股份有限公司 | Control system for detecting blockage of refrigeration system and blockage detection method |
| CN113883656B (en) * | 2021-10-13 | 2025-01-28 | 格力电器（芜湖）有限公司 | Air conditioner with multiple internal pipes and temperature sensing packages, abnormality detection method and storage medium |
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| CN1737448A (en) * | 2005-06-20 | 2006-02-22 | 珠海格力电器股份有限公司 | Air conditioner with refrigerant shortage and system blockage fault diagnosis function and diagnosis method |
| CN103542463A (en) * | 2012-07-09 | 2014-01-29 | 富士通将军股份有限公司 | Outdoor unit for air-conditioning apparatus, and air-conditioning apparatus |
| CN203443023U (en) * | 2013-09-05 | 2014-02-19 | 珠海格力电器股份有限公司 | Control system of multi-split air conditioner |
| CN204900222U (en) * | 2015-08-31 | 2015-12-23 | 珠海格力电器股份有限公司 | Compressor performance detection device and air conditioning system with same |
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| CN105065249A (en) | 2015-11-18 |
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