CN107806727A - Determination methods, device during to air conditioner heat pump system progress coolant injection - Google Patents
Determination methods, device during to air conditioner heat pump system progress coolant injection Download PDFInfo
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- CN107806727A CN107806727A CN201711000512.8A CN201711000512A CN107806727A CN 107806727 A CN107806727 A CN 107806727A CN 201711000512 A CN201711000512 A CN 201711000512A CN 107806727 A CN107806727 A CN 107806727A
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- Prior art keywords
- temperature
- valve
- coolant injection
- heat pump
- pump system
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Classifications
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- 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
- F25B45/00—Arrangements for charging or discharging refrigerant
-
- 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
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/003—Control issues for charging or collecting refrigerant to or from a cycle
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
- F25B2500/222—Detecting refrigerant leaks
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses determination methods during a kind of progress coolant injection to air conditioner heat pump system, device, the described method comprises the following steps：During coolant injection, temperature after temperature and valve is detected before the valve of charging valve in real time；Obtain the temperature gap after temperature and valve between temperature before valve；Judge whether temperature gap is less than or equal to predetermined threshold value；If temperature gap is less than or equal to predetermined threshold value, judge that refrigerant missing occurs in refrigerant tank, and control charging valve to close.Thereby, it is possible to intelligently judge whether also have refrigerant in refrigerant tank, when without refrigerant, to be changed in time to refrigerant tank.
Description
Technical field
The present invention relates to air-conditioning technical field, it is more particularly to a kind of to air conditioner heat pump system carry out coolant injection when judgement
Method and a kind of device that coolant injection is carried out to air conditioner heat pump system.
Background technology
Air conditioner heat pump system in the process of running, if there is coolant leakage, then can influence operation of air conditioner effect and unit
In the life-span, now need to carry out coolant injection to system.During coolant injection, it is possible that refrigerant tank asking without refrigerant
Topic, lead to not carry out coolant injection to system.
The content of the invention
It is contemplated that at least solves one of technical problem in above-mentioned technology to a certain extent.Therefore, the present invention
A kind of determination methods when first purpose is to propose progress coolant injection to air conditioner heat pump system, can intelligently judge
Whether there is refrigerant in refrigerant tank, when without refrigerant, to be changed in time to refrigerant tank.
Second object of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
Third object of the present invention is to propose a kind of device for carrying out air conditioner heat pump system coolant injection.
To reach above-mentioned purpose, first aspect present invention embodiment, which proposes, a kind of to be carried out refrigerant to air conditioner heat pump system and fills
Determination methods during note, wherein, the device of coolant injection is carried out to the air conditioner heat pump system includes refrigerant tank, by the refrigerant
Tank is connected to the coolant injection pipe of the refrigerant circulation stream of the air conditioner heat pump system, is arranged on filling on the coolant injection pipe
Valve is noted, the described method comprises the following steps：During coolant injection, detect in real time before the valve of the charging valve after temperature and valve
Temperature；Obtain the temperature gap after temperature and the valve between temperature before the valve；Judge whether the temperature gap is less than
In predetermined threshold value；If the temperature gap is less than or equal to predetermined threshold value, judge that refrigerant missing occurs in the refrigerant tank, and control
The charging valve is made to close.
Determination methods when carrying out coolant injection to air conditioner heat pump system according to embodiments of the present invention, in coolant injection mistake
Cheng Zhong, temperature after temperature and valve is detected before the valve of charging valve in real time, and obtain the temperature difference before valve after temperature and valve between temperature
Value, and judge whether temperature gap is less than or equal to predetermined threshold value, if it is, judging that refrigerant missing occurs in refrigerant tank, and control
Charging valve processed is closed.This method can intelligently judge in refrigerant tank whether to also have refrigerant, with when without refrigerant, to refrigerant tank
Changed in time.
In addition, according to the above embodiment of the present invention propose to air conditioner heat pump system carry out coolant injection when determination methods
There can also be technical characteristic additional as follows：
According to one embodiment of present invention, when judging that refrigerant missing occurs in the refrigerant tank, replacing refrigerant is also sent
The prompt message of tank.
According to one embodiment of present invention, when the temperature gap is more than predetermined threshold value, the charging valve is kept to beat
Open.
According to one embodiment of present invention, the charging valve is magnetic valve.
To reach above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of non-transitory computer-readable storage medium
Matter, computer program is stored thereon with, the program is realized above-mentioned to air conditioner heat pump system progress refrigerant when being executed by processor
Determination methods during filling.
The non-transitorycomputer readable storage medium of the embodiment of the present invention, it is above-mentioned to air conditioner heat pump system by performing
Determination methods during coolant injection are carried out, can intelligently judge in refrigerant tank whether to also have refrigerant, it is right with when without refrigerant
Refrigerant tank is changed in time.
To reach above-mentioned purpose, third aspect present invention embodiment, which proposes, a kind of to be carried out refrigerant to air conditioner heat pump system and fills
The device of note, including：Refrigerant tank；Coolant injection pipe, the coolant injection pipe are used to the refrigerant tank being connected to the air-conditioning
The refrigerant circulation stream of heat pump；The charging valve being arranged on the coolant injection pipe；Temperature detecting module, the temperature inspection
Survey module and be used to detecting before the valve of the charging valve temperature after temperature and valve in real time during coolant injection；Control module, institute
State control module and be used to obtain temperature gap before the valve after temperature and the valve between temperature, and judge the temperature gap
Whether it is less than or equal to predetermined threshold value, and judges that the refrigerant tank appearance is cold when the temperature gap is less than or equal to predetermined threshold value
Matchmaker lacks, and controls the charging valve to close.
The device that coolant injection is carried out to air conditioner heat pump system according to embodiments of the present invention, during coolant injection,
Detect before the valve of charging valve temperature after temperature and valve in real time by temperature detecting module, then pass through control module and obtain temperature before valve
Temperature gap after degree and valve between temperature, and judge whether temperature gap is less than or equal to predetermined threshold value, and in temperature gap
During less than or equal to predetermined threshold value, judge that refrigerant missing occurs in refrigerant tank, and control charging valve to close.The device can intelligently be sentenced
Break and in refrigerant tank whether also have refrigerant, when without refrigerant, to be changed in time to refrigerant tank.
In addition, the device of coolant injection is carried out also to the air conditioner heat pump system according to what the above embodiment of the present invention proposed
There can be technical characteristic additional as follows：
According to one embodiment of present invention, above-mentioned air conditioner heat pump system carries out the device of coolant injection also including prompting
Module, wherein, the control module also controls the reminding module to send more when judging that refrigerant missing occurs in the refrigerant tank
Change the prompt message of refrigerant tank.
According to one embodiment of present invention, the control module is additionally operable to when the temperature gap is more than predetermined threshold value
The charging valve is kept to open.
According to one embodiment of present invention, the charging valve is magnetic valve.
According to one embodiment of present invention, the temperature detecting module includes the first temperature sensor and second temperature passes
Sensor, first temperature sensor are arranged on the porch of the charging valve, and the second temperature sensor is arranged on described
The exit of charging valve.
Brief description of the drawings
The flow of determination methods when Fig. 1 is the progress coolant injection according to embodiments of the present invention to air conditioner heat pump system
Figure；
The stream of determination methods when Fig. 2 is the progress coolant injection according to an embodiment of the invention to air conditioner heat pump system
Cheng Tu；
Fig. 3 is the structural representation of the device according to embodiments of the present invention that coolant injection is carried out to air conditioner heat pump system；
And
Fig. 4 is the structural representation of the device according to an embodiment of the invention that coolant injection is carried out to air conditioner heat pump system
Figure.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below in conjunction with the accompanying drawings come describe the embodiment of the present invention to air conditioner heat pump system carry out coolant injection when judgement side
Method, non-transitorycomputer readable storage medium and the device that coolant injection is carried out to air conditioner heat pump system.
The flow of determination methods when Fig. 1 is the progress coolant injection according to embodiments of the present invention to air conditioner heat pump system
Figure.
In an embodiment of the present invention, the device of coolant injection is carried out to air conditioner heat pump system may include：Refrigerant tank, will be cold
Matchmaker's tank is connected to coolant injection pipe, the charging valve being arranged on coolant injection pipe of the refrigerant circulation stream of air conditioner heat pump system.
Wherein, charging valve can be magnetic valve.
As shown in figure 1, determination methods when carrying out coolant injection to air conditioner heat pump system of the embodiment of the present invention may include
Following steps：
S1, during coolant injection, temperature after temperature and valve is detected before the valve of charging valve in real time.
During coolant injection, because the charging valve on coolant injection pipe has certain throttling action, work as cold medium flux
When larger, the temperature gap before its valve after temperature and valve between temperature is larger, now represents that the coolant quantity in refrigerant tank is more；When cold
When matchmaker's flow is smaller or stagnates, the temperature gap before its valve after temperature and valve between temperature is smaller, now represents to remain in refrigerant tank
Waste cold matchmaker is less or without refrigerant.Therefore, can be by temperature after temperature before the valve according to charging valve and valve come real-time judge
Whether refrigerant is lacked during coolant injection, in refrigerant tank or without refrigerant, in few refrigerant or during without refrigerant, to be carried to user
Wake up, to change refrigerant tank in time.
Specifically, when needing to carry out coolant injection to air conditioner heat pump system, first by refrigerant tank and coolant injection mouth of pipe phase
Connection, so that the refrigerant in refrigerant tank enters by coolant injection pipe in the coolant loop of air conditioner heat pump system.Then, Yong Hutong
Cross remote control etc. and send coolant injection signal to air conditioner heat pump system, so that air conditioner heat pump system enters coolant injection pattern, this
When air conditioner heat pump system control charging valve open, to carry out coolant injection.During coolant injection, charging valve is detected in real time
Temperature after temperature and valve before valve.Wherein, in the porch of charging valve (before also claiming the valve of charging valve) temperature can be set to pass
Sensor, to detect temperature T1 before the valve of charging valve in real time by the temperature sensor, (it can also claim to fill in the exit of charging valve
After the valve of valve) temperature sensor is set, to detect temperature T2 after the valve of charging valve in real time by the temperature sensor.
S2, obtain the temperature gap after temperature and valve between temperature before valve.
Specifically, temperature before the valve of charging valve is calculated after temperature T2 after temperature T1 before getting the valve of charging valve and valve
Temperature gap △ T after T1 and valve between temperature T2：△ T=T1-T2.
S3, judges whether temperature gap is less than or equal to predetermined threshold value.Wherein, predetermined threshold value T can be tested by lot of experiments
Obtain.
S4, if temperature gap is less than or equal to predetermined threshold value, judge that refrigerant missing occurs in refrigerant tank, and control charging valve
Close.
According to one embodiment of present invention, when temperature gap is more than predetermined threshold value, charging valve is kept to open.
Specifically, during coolant injection, temperature T2 after temperature T1 and valve is detected before the valve of charging valve in real time, and count
The temperature gap △ T after temperature T1 and valve between temperature T2 before valve are calculated, and are judged between temperature gap △ T and predetermined threshold value T
Relation.If △ T ＞ T, illustrate that the coolant quantity in refrigerant tank is more, now charging valve is kept to be in open mode, to continue
Refrigerant is filled, until coolant injection is completed；If △ T≤T, illustrate that refrigerant tank refrigerant missing occurs (for example, in refrigerant tank
Coolant quantity is less or refrigerant tank in without refrigerant), and control charging valve to close.Thus, during coolant injection, filling is utilized
Temperature gap before and after valve, it can intelligently judge whether refrigerant tank occurs refrigerant missing.
Further, according to one embodiment of present invention, when judging that refrigerant missing occurs in refrigerant tank, replacing is also sent
The prompt message of refrigerant tank, for example, numeral method symbol E or corresponding LED on the display panel of air conditioner heat pump system
Flicker, to remind user to change refrigerant tank.
The stream of determination methods when Fig. 2 is the progress coolant injection according to an embodiment of the invention to air conditioner heat pump system
Cheng Tu, as shown in Fig. 2 determination methods when this carries out coolant injection to air conditioner heat pump system may include following steps：
S101, during coolant injection, temperature after temperature T1 and valve is detected before the valve of charging valve (such as magnetic valve) in real time
T2。
S102, judges whether T1-T2≤T sets up.If it is, perform step S104；If not, perform step S103.
S103, charging valve remain on, to continue coolant injection, until filling is completed.
S104, judge that refrigerant missing occurs in refrigerant tank, control charging valve is closed, and is simultaneously emitted by changing the prompting of refrigerant tank
Information.
In summary, determination methods when carrying out coolant injection to air conditioner heat pump system according to embodiments of the present invention,
During coolant injection, detect before the valve of charging valve temperature after temperature and valve in real time, and obtain before valve temperature and temperature after valve it
Between temperature gap, judge whether temperature gap is less than or equal to predetermined threshold value, if it is, judging that refrigerant tank refrigerant occurs and lacked
Lose, and control charging valve to close.This method can intelligently judge in refrigerant tank whether to also have refrigerant, with when without refrigerant,
Refrigerant tank is changed in time.
In addition, the invention also provides a kind of non-transitorycomputer readable storage medium, computer journey is stored thereon with
Sequence, the program realize determination methods during the above-mentioned progress coolant injection to air conditioner heat pump system when being executed by processor.
The non-transitorycomputer readable storage medium of the embodiment of the present invention, it is above-mentioned to air conditioner heat pump system by performing
Determination methods during coolant injection are carried out, can intelligently judge in refrigerant tank whether to also have refrigerant, it is right with when without refrigerant
Refrigerant tank is changed in time.
Fig. 3 is the block diagram of the device according to embodiments of the present invention that coolant injection is carried out to air conditioner heat pump system.
As shown in figure 3, the device that coolant injection is carried out to air conditioner heat pump system of the embodiment of the present invention may include：Refrigerant tank 10, refrigerant
Filler line 20, charging valve 30, temperature detecting module 40 and control module 50.
Wherein, coolant injection pipe 20 is used for the refrigerant circulation stream that refrigerant tank 10 is connected to air conditioner heat pump system.Filling
Valve 30 is arranged on coolant injection pipe 20.Temperature detecting module 40 is used to detect charging valve 30 in real time during coolant injection
Temperature after temperature and valve before valve.Control module 50 is used to obtain the temperature gap after temperature and valve between temperature before valve, and judges
Whether temperature gap is less than or equal to predetermined threshold value, and judges that refrigerant tank 10 occurs when temperature gap is less than or equal to predetermined threshold value
Refrigerant lacks, and controls charging valve 30 to close.
According to one embodiment of present invention, as shown in figure 3, temperature detecting module 40 may include the first temperature sensor 41
With second temperature sensor 42, the first temperature sensor 41 is arranged on the porch of charging valve 30, and second temperature sensor 42 is set
Put in the exit of charging valve 30.
According to one embodiment of present invention, as shown in figure 4, above-mentioned air conditioner heat pump system carries out the device of coolant injection
It may also include reminding module 60.Control module 50 also controls reminding module 60 to send out when judging that refrigerant missing occurs in refrigerant tank 10
Go out to change the prompt message of refrigerant tank 10.
According to one embodiment of present invention, control module 50 is additionally operable to keep filling when temperature gap is more than predetermined threshold value
Note valve 30 is opened.
According to one embodiment of present invention, charging valve 30 can be magnetic valve.
It should be noted that the embodiment of the present invention carries out what is do not disclosed in the device of coolant injection to air conditioner heat pump system
Details, refer to the embodiment of the present invention to air conditioner heat pump system carry out coolant injection when determination methods disclosed in it is thin
Section, specific I will not elaborate.
The device that coolant injection is carried out to air conditioner heat pump system according to embodiments of the present invention, will be cold by coolant injection pipe
Matchmaker's tank is connected to the refrigerant circulation stream of air conditioner heat pump system, and sets charging valve on coolant injection pipe.In coolant injection mistake
Cheng Zhong, detect before the valve of charging valve temperature after temperature and valve in real time by temperature detecting module, then obtained by control module
Temperature gap before valve after temperature and valve between temperature, and judge whether temperature gap is less than or equal to predetermined threshold value, and in temperature
When degree difference is less than or equal to predetermined threshold value, judge that refrigerant missing occurs in refrigerant tank, and control charging valve to close.The device being capable of intelligence
Energy ground judges whether also have refrigerant in refrigerant tank, when without refrigerant, to be changed in time to refrigerant tank.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
1. determination methods during a kind of progress coolant injection to air conditioner heat pump system, it is characterised in that to the air-conditioning heat pump system
The device that system carries out coolant injection includes refrigerant tank, the refrigerant tank is connected to the refrigerant circulation stream of the air conditioner heat pump system
The coolant injection pipe on road, the charging valve being arranged on the coolant injection pipe, the described method comprises the following steps：
During coolant injection, temperature after temperature and valve is detected before the valve of the charging valve in real time；
Obtain the temperature gap after temperature and the valve between temperature before the valve；
Judge whether the temperature gap is less than or equal to predetermined threshold value；
If the temperature gap is less than or equal to predetermined threshold value, judge that refrigerant missing occurs in the refrigerant tank, and described in control
Charging valve is closed.
2. determination methods during coolant injection are carried out to air conditioner heat pump system as claimed in claim 1, it is characterised in that when sentencing
When refrigerant missing occurs in the refrigerant tank that breaks, the prompt message for changing refrigerant tank is also sent.
3. determination methods during coolant injection are carried out to air conditioner heat pump system as claimed in claim 1 or 2, it is characterised in that
When the temperature gap is more than predetermined threshold value, the charging valve is kept to open.
4. determination methods when carrying out coolant injection to air conditioner heat pump system as any one of claim 1-3, it is special
Sign is that the charging valve is magnetic valve.
5. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, it is characterised in that the program quilt
During computing device realize as any one of claim 1-4 to air conditioner heat pump system progress coolant injection when judgement
Method.
A kind of 6. device that coolant injection is carried out to air conditioner heat pump system, it is characterised in that including：
Refrigerant tank；
Coolant injection pipe, the coolant injection pipe are used for the refrigerant circulation that the refrigerant tank is connected to the air conditioner heat pump system
Stream；
The charging valve being arranged on the coolant injection pipe；
Temperature detecting module, the temperature detecting module are used for before detecting the valve of the charging valve in real time during coolant injection
Temperature after temperature and valve；
Control module, the control module are used to obtain the temperature gap after temperature and the valve between temperature before the valve, and
Judge whether the temperature gap is less than or equal to predetermined threshold value, and judge when the temperature gap is less than or equal to predetermined threshold value
There is refrigerant missing in the refrigerant tank, and controls the charging valve to close.
7. the device of coolant injection is carried out to air conditioner heat pump system as claimed in claim 6, it is characterised in that also include prompting
Module, wherein, the control module also controls the reminding module to send more when judging that refrigerant missing occurs in the refrigerant tank
Change the prompt message of refrigerant tank.
8. the device that coolant injection is carried out to air conditioner heat pump system as claimed in claims 6 or 7, it is characterised in that the control
Molding block is additionally operable to keep the charging valve to open when the temperature gap is more than predetermined threshold value.
9. the device that coolant injection is carried out to air conditioner heat pump system as any one of claim 6-8, it is characterised in that
The charging valve is magnetic valve.
10. the device of coolant injection is carried out to air conditioner heat pump system as claimed in claim 6, it is characterised in that the temperature
Detection module includes the first temperature sensor and second temperature sensor, and first temperature sensor is arranged on the charging valve
Porch, the second temperature sensor is arranged on the exit of the charging valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711000512.8A CN107806727B (en) | 2017-10-24 | 2017-10-24 | Method and device for judging refrigerant filling of air-conditioning heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711000512.8A CN107806727B (en) | 2017-10-24 | 2017-10-24 | Method and device for judging refrigerant filling of air-conditioning heat pump system |
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| Publication Number | Publication Date |
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| CN107806727A true CN107806727A (en) | 2018-03-16 |
| CN107806727B CN107806727B (en) | 2020-04-03 |
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| CN201711000512.8A Active CN107806727B (en) | 2017-10-24 | 2017-10-24 | Method and device for judging refrigerant filling of air-conditioning heat pump system |
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Cited By (1)
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| CN107806727B (en) | 2020-04-03 |
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