CN114251783A - Refrigerant content detection method and device and air conditioner - Google Patents
Refrigerant content detection method and device and air conditioner Download PDFInfo
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- CN114251783A CN114251783A CN202111557015.4A CN202111557015A CN114251783A CN 114251783 A CN114251783 A CN 114251783A CN 202111557015 A CN202111557015 A CN 202111557015A CN 114251783 A CN114251783 A CN 114251783A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 64
- 238000001514 detection method Methods 0.000 title abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 18
- 239000011737 fluorine Substances 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims description 40
- 238000004590 computer program Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000007812 deficiency Effects 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000002567 autonomic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a refrigerant content detection method and device and an air conditioner, relates to the technical field of refrigerant detection, and aims to obtain the current reversing time T of a four-way valvePractice of(ii) a According to the current reversing time T of the four-way valvePractice ofReversing time T of four-way valve in standard stateDatumDetermining the current refrigerant content; wherein the reversing time T of the four-way valve under the standard stateDatumThe reversing time of the four-way valve under the full fluorine standard state is shown. The fluorine deficiency degree is judged by measuring the reversing time of the four-way valve of the cooling and heating air conditioner, the resolution ratio of the content of the refrigerant detected by the cooling and heating air conditioner can be improved in comparison with the conventional fluorine deficiency protection process of the air conditioner outdoor unit aiming at the refrigerant, the content of the refrigerant can be accurately distinguished under the condition that the content of the refrigerant is less but not reduced to trigger protection, and the percentage of the content of the residual refrigerant in comparison with the content of the residual refrigerant in the condition of full fluorine can be efficiently detected.
Description
Technical Field
The invention relates to the technical field of refrigerant detection, in particular to a refrigerant content detection method and device and an air conditioner.
Background
The existing air conditioner external unit of the cooling and heating air conditioner type only has fluorine deficiency protection aiming at a refrigerant, during the fluorine deficiency protection process, whether the temperature of an outer pipe or the temperature of an inner pipe reaches the specified temperature after the air conditioner is started for a period of time is judged, if the temperature of the outer pipe or the temperature of the inner pipe does not reach the specified temperature, the air conditioner external unit is considered to be fluorine deficiency, and if the temperature of the air conditioner external unit reaches the specified temperature, the air conditioner external unit is considered to be fluorine deficiency;
the fluorine-deficient protection process described above has some drawbacks: if the interval of the unconfirmed fluorine-lacking protection is larger, the condition that the content of the refrigerant is less but the protection is not reduced to trigger protection exists, at the moment, the operation effect of the air conditioner is poor, the energy efficiency is reduced, and a user cannot know the specific content of the refrigerant; therefore, the invention provides a refrigerant content detection method, a refrigerant content detection device and an air conditioner, and aims to overcome the defects in the prior art.
Disclosure of Invention
In order to overcome the above disadvantages of the prior art, an object of the present invention is to provide a method for detecting a content of a refrigerant, comprising:
obtaining the current reversing time T of the four-way valvePractice of；
According to the reversing time T of the current four-way valvePractice ofReversing time T of four-way valve in standard stateDatumDetermining the current refrigerant content Q;
wherein, the reversing time T of the four-way valve under the standard stateDatumThe reversing time of the four-way valve under the full fluorine standard state is shown.
As a further improvement of the invention: determining the reversing time T of the four-way valve in the standard stateDatumThe method comprises the following steps:
acquiring the electrifying time T of an electric spring in the four-way valve in a heating mode under the set reference state0And acquiring the time T of the left piston head in the four-way valve touching the pressure elastic sheet1；
Determining the reversing time T of the four-way valve in the standard stateDatum＝T1-T0；
Wherein the referenceThe state being a set inner ring temperature TSetting upThe frequency of a compressor of the time control unit is V, the inner fan is stopped, the outer fan is a middle windshield, and the step number of the electronic expansion valve is S.
As a further improvement of the invention: obtaining the current reversing time T of the four-way valvePractice ofThe method comprises the following steps:
in the test state, T is judged when the heating mode is performed2Whether a pressure spring plate touch signal is detected within time; if yes, recording the electrifying time T of the electric spring0', and obtaining the time T of the contact pressure elastic sheet of the left piston head in the four-way valve1’；
Determining the reversing time of the four-way valve to be T under the test conditionTesting＝T1’-T0’；
The testing state comprises that an inner fan of the unit is stopped, an outer fan of the unit is a middle windshield, the frequency of a compressor is V, and the step number of the electronic expansion valve is S.
As a further improvement of the invention: obtaining the current reversing time T of the four-way valvePractice ofFurther comprising:
and under the test state, determining the compensation reversing time K of the four-way valves under different outer rings according to a fitting formula.
As a further improvement of the invention: determining a commutation time T of the current four-way valvePractice ofIs TPractice of＝TTesting-K。
As a further improvement of the invention: determining the current refrigerant content Q as Q ═ TPractice of/TDatum。
As a further improvement of the invention: the test state further comprises: if not, judging whether the temperature of the inner pipe and the temperature of the outer pipe of the unit meet the standard in the measuring state or not; and if so, determining that the four-way valve has a fault.
A control device for a cooling and heating machine type detection refrigerant comprises:
an acquisition module: the four-way valve is used for acquiring the reversing time of the four-way valve, acquiring the temperature of an inner pipe and the temperature of an outer pipe and acquiring a pressure elastic sheet touch signal;
a calculation module: the device is used for calculating the reversing time of the four-way valve under different outer rings and calculating the compensation reversing time of the four-way valve in a fitting manner;
a judging module: the four-way valve is used for judging whether the four-way valve fails or not according to whether a pressure elastic sheet touch signal is received within set time or not and whether the inner pipe temperature and the outer pipe temperature meet the standard in a test state or not;
a determination module: and the method is used for determining the content of the refrigerant according to the reversing time of the current four-way valve and the reversing time of the four-way valve in a standard state.
An air conditioner comprises a computer readable storage medium and a processor, wherein the computer readable storage medium stores a computer program, and the computer program is read by the processor and runs to realize the control method for detecting the refrigerant.
The invention has the beneficial effects that: the control method for detecting the refrigerant judges the fluorine deficiency degree by measuring the reversing time of the four-way valve of the cooling and heating air conditioner, can improve the resolution ratio of the content of the refrigerant detected by the cooling and heating air conditioner in the process of fluorine deficiency protection of the refrigerant compared with the traditional air conditioner external unit, can accurately distinguish the content of the refrigerant under the condition that the content of the refrigerant is less but not reduced to trigger protection, can efficiently detect the percentage of the content of the residual refrigerant relative to the content of the full fluorine, and can display the percentage through the double eight display tubes of the internal unit, and a user can autonomously determine whether to fill the refrigerant or not by inquiring the content of the residual refrigerant of the cooling and heating air conditioner and the operation effect of the cooling and heating air conditioner.
Drawings
FIG. 1 is a schematic view showing a connection relationship between a four-way valve and an indoor unit and an outdoor unit according to the present invention;
FIG. 2 is a flow chart according to an embodiment of the present invention;
fig. 3 is a flow chart of a fourth embodiment of the present invention.
Wherein: 1. a main spool valve 1; 2. a right piston chamber; 3. a left piston cavity; 4. a capillary tube 4; 5. a pilot spool 5; 6. an electric spring; 7. a pressure spring plate; 8. an indoor unit; 9. an outdoor unit; 10. a compressor.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example one
As shown in fig. 1-2, the present embodiment provides a method for detecting a content of a refrigerant, which is applied to an air conditioning unit of a cooling and heating air conditioner, where the air conditioning unit of the cooling and heating air conditioner at least includes an indoor unit 8, an outdoor unit 9, a four-way valve, and a dual-eight display tube, where the dual-eight display tube is disposed inside the indoor unit 8;
in fig. 1, the four-way valve has four ports D, S, C, E, which are respectively connected to the exhaust port of the compressor 10, the suction port of the compressor 10, the inlet of the condenser of the outdoor unit 9, and the outlet of the evaporator of the indoor unit 8, and the switching of the cooling and heating cycle of the cooling and heating type air conditioning system is realized by adjusting the communication relationship among the four ports D, S, C, E through the change of the position of the main slide valve 1 in the four-way valve;
under the refrigeration cycle mode, the four-way valve is in a power-off state, at the moment, the pilot slide valve 5 is only under the action of the extension force of the electric spring 6, under the action of the pilot slide valve 5, the pilot slide valve 5 moves to the right, so that the left piston cavity 3 is communicated with a D port of the four-way valve through the capillary tube 4, the right piston cavity 2 is communicated with an S port of the four-way valve through the capillary tube 4, and due to the fact that pressure difference exists between the D port of the four-way valve and the S port of the four-way valve, the piston and the main slide valve 1 move to the right, so that the D port of the four-way valve is communicated with the C port of the four-way valve, the S port of the four-way valve is communicated with the E port of the four-way valve, and finally refrigeration cycle is achieved.
In a heating circulation mode, the four-way valve is in a power-on state, the pilot slide valve 5 is under the dual action of the extension force of the electric spring 6 and the magnetic force of the electromagnetic coil, the two directions of the two forces are opposite, and the magnetic force of the electromagnetic coil is stronger than the extension force of the electric spring 6, so that the pilot slide valve 5 moves to the left, the right piston cavity 2 is communicated with the D port of the four-way valve through the capillary tube 4, the left piston cavity 3 is communicated with the S port of the four-way valve through the capillary tube 4, the piston and the main slide valve 1 move to the left under the action of the pressure difference between the D port of the four-way valve and the S port of the four-way valve, so that the D port of the four-way valve is communicated with the E port of the four-way valve, the S port of the four-way valve is communicated with the C port of the four-way valve, and finally the heating circulation is realized;
the control method for detecting the refrigerant comprises the following steps of:
obtaining a currentReversing time T of four-way valvePractice of；
According to the reversing time T of the current four-way valvePractice ofReversing time T of four-way valve in standard stateDatumDetermining the current refrigerant content Q;
wherein, the reversing time T of the four-way valve under the standard stateDatumThe reversing time of the four-way valve under the full fluorine standard state is shown.
Specifically, the reversing time T of the four-way valve in the standard state is determinedDatumThe method comprises the following steps:
acquiring the electrifying time T of an electric spring in the four-way valve in a heating mode under the set reference state0And acquiring the time T of the left piston head in the four-way valve touching the pressure elastic sheet1；
Determining the reversing time T of the four-way valve in the standard stateDatum＝T1-T0；
Wherein the reference state is a set inner ring temperature TSetting upThe frequency of a compressor of the time control unit is V, the inner fan is stopped, the outer fan is a middle windshield, and the step number of the electronic expansion valve is S.
Specifically, the reversing time T of the current four-way valve is obtainedPractice ofThe method comprises the following steps:
in the test state, T is judged when the heating mode is performed2Whether a pressure spring plate touch signal is detected within time; if yes, recording the electrifying time T of the electric spring0', and obtaining the time T of the contact pressure elastic sheet of the left piston head in the four-way valve1’；
Determining the reversing time of the four-way valve to be T under the test conditionTesting＝T1’-T0’；
The testing state comprises that an inner fan of the unit is stopped, an outer fan of the unit is a middle windshield, the frequency of a compressor is V, and the step number of the electronic expansion valve is S.
Specifically, the reversing time T of the current four-way valve is obtainedPractice ofFurther comprising:
and under the test state, determining the compensation reversing time K of the four-way valves under different outer rings according to a fitting formula.
Specifically, the reversing time T of the current four-way valve is determinedPractice ofIs TPractice of＝TTesting-K。
Specifically, the current refrigerant content Q is determined as Q ═ TPractice of/TDatum。
Specifically, the method further includes, in the test state: if not, judging whether the temperature of the inner pipe and the temperature of the outer pipe of the unit meet the standard in the measuring state or not; and if so, determining that the four-way valve has a fault.
The reversing time of a four-way valve in a standard state is measured aiming at the model of the air conditioner, and the reversing time T of the four-way valve in the standard stateDatumEqual to the time T that the left piston head of the four-way valve touches the pressure elastic sheet1And the electrification time T of the electric spring of the four-way valve0The difference between, i.e.: t isDatum＝T1-T0；
Wherein: time T for the left piston head of four-way valve to touch pressure spring plate1And the energizing time T of the electric spring of the four-way valve0The method is also measured in a standard state, wherein the standard state refers to a state that the temperature of an inner ring of a compressor is 20 ℃, an inner fan is stopped, an outer fan is in a neutral wind gear, the frequency of the compressor is V, and the step number of an electronic expansion valve is S;
the reversing time of the four-way valve in the actual test state is measured aiming at the model of the air conditioner, and the reversing time T of the four-way valve in the actual test stateTestingEqual to the time T that the left piston head of the four-way valve touches the pressure elastic sheet1 ’And the electrification time T of the electric spring of the four-way valve0 ’The difference between, i.e.: t isTesting＝(T1 ’-T0 ’)；
Wherein: time T for the left piston head of four-way valve to touch pressure spring plate1’And the electrification time T of the electric spring of the four-way valve0’The method is also measured in an actual test state, wherein the actual test state refers to a state that an inner fan stops working, an outer fan middle gear, the compressor frequency is V ', the electronic expansion valve step number is S', V 'in the actual test state is equal to V in a standard state, and the actual test state refers to a state that the inner fan stops working, the outer fan middle gear is V', the electronic expansion valve step number is S ', and V' in the actual test state is equal to V in the standard stateS' in the test state is equal to S in the standard state;
calculating to obtain a compensation value, and adjusting the reversing time of the four-way valve in an actual test state by using the compensation value to obtain the actual reversing time of the four-way valve at different external environment temperatures;
because the outer ring temperature in the actual test state is different from that in the standard state, the outer ring temperature T is differentOuter ringThe pressure in the lower pipe is not uniform and therefore needs to be at TTestingAdding a compensation value K to the obtained value, wherein the compensation value K is calculated as follows:
keeping the experimental environment (inner fan stop, outer fan middle wind gear, compressor frequency V ', electronic expansion valve step S') under the actual test state, and adjusting the outer ring temperature TOuter ring(40 ℃ -0 ℃), then obtaining the four-way valve reversing time T under different outer rings according to the formula (1):
Kt outer ringNot T-T benchmark (1)
By linear fitting, K and T are obtainedOuter ringIs shown in formula (2):
K＝F*(Touter ring) (2)
When the current refrigerant content is tested, the actual reversing time T of the four-way valve under different external environment temperatures can be obtainedPractice of＝TTest 0-K；
The refrigerant content is obtained according to the ratio of the actual reversing time of the four-way valve at different external environment temperatures to the reversing time of the four-way valve in a standard state, namely the refrigerant content Q is TPractice of/TDatum；
After the refrigerant content is obtained, the refrigerant content is displayed through a double eight display tube inside the indoor unit 8.
The switching-over time through survey cold-warm air conditioner cross valve judges scarce fluorine degree, lack the fluorine protection process to the refrigerant for traditional air conditioner outer machine can improve the resolution ratio that cold-warm air conditioner detected the refrigerant content, nevertheless do not reduce to the condition that triggers the protection and also can accurately distinguish the refrigerant content to the refrigerant content, and can high-efficiently detect the percentage of surplus refrigerant content for full fluorine condition, and show through two eight display tubes of inner machine, the user can carry out the autonomic decision through the operation effect of inquiring surplus refrigerant content of cold-warm air conditioner and whether fill the refrigerant, whole process has convenient efficient advantage.
Example two
This implementation provides a controlling means that changes in temperature model detected refrigerant, includes:
an acquisition module: the four-way valve is used for acquiring the reversing time of the four-way valve, acquiring the temperature of an inner pipe and the temperature of an outer pipe and acquiring a pressure elastic sheet touch signal;
a calculation module: the device is used for calculating the reversing time of the four-way valve under different outer rings and calculating the compensation reversing time of the four-way valve in a fitting manner;
a judging module: the four-way valve is used for judging whether the four-way valve fails or not according to whether a pressure elastic sheet touch signal is received within set time or not and whether the inner pipe temperature and the outer pipe temperature meet the standard in a test state or not;
a determination module: and the method is used for determining the content of the refrigerant according to the reversing time of the current four-way valve and the reversing time of the four-way valve in a standard state.
EXAMPLE III
A cooling and heating air conditioner comprises a computer readable storage medium and a processor, wherein a computer program is stored in the computer readable storage medium, and when the computer program is read and executed by the processor, the control method for detecting the content of a refrigerant is realized.
Example four
As shown in fig. 3, the present invention further provides a four-way valve fault detection method, including the following steps:
in the actual test state, a specific time period T is detected2Whether a touch signal of the pressure spring piece is received within time or not;
when a specific time period T2If a touch signal of the pressure elastic sheet is received within time, the reversing time of the four-way valve in an actual test state is measured;
when a specific time period T2If the touch signal of the pressure spring piece is not received within the time, the temperature values of the inner pipe and the outer pipe are obtained, and the obtained temperature values of the inner pipe and the outer pipe are judgedWhether the tube temperature value meets the standard under the current state or not:
if the four-way valve is in accordance with the preset four-way valve fault, judging the four-way valve fault, sending a four-way valve fault signal to the indoor unit 8, and displaying by using the double eight display tubes;
if not, judging that other faults occur in the air conditioner, sending a fault code to the indoor unit 8, and displaying by using the double eight display tubes to remind a user to overhaul the faults.
The temperature of the inner pipe and the temperature of the outer pipe are obtained to judge whether the temperature accords with the test standard or not by not receiving a signal that the piston touches the pressure elastic sheet within a certain time, the fault of the four-way valve is judged if the temperature accords with the test standard, a fault signal is sent to be displayed by the double eight display pipes of the inner machine, whether the temperature is not cooled or heated due to the fault of the four-way valve or the reason of a refrigerant can be judged by the detection method during maintenance, and unnecessary maintenance cost can be avoided.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A method for detecting the content of a refrigerant is characterized in that: the method comprises the following steps:
obtaining the current reversing time T of the four-way valvePractice of；
According to the reversing time T of the current four-way valvePractice ofReversing time T of four-way valve in standard stateDatumDetermining the current refrigerant content Q;
wherein, the reversing time T of the four-way valve under the standard stateDatumThe reversing time of the four-way valve under the full fluorine standard state is shown.
2. The method of claim 1A method for detecting the content of a refrigerant is characterized in that: determining the reversing time T of the four-way valve in the standard stateDatumThe method comprises the following steps:
acquiring the electrifying time T of an electric spring in the four-way valve in a heating mode under the set reference state0And acquiring the time T of the left piston head in the four-way valve touching the pressure elastic sheet1；
Determining the reversing time T of the four-way valve in the standard stateDatum＝T1-T0；
Wherein the reference state is a set inner ring temperature TSetting upThe frequency of a compressor of the time control unit is V, the inner fan is stopped, the outer fan is a middle windshield, and the step number of the electronic expansion valve is S.
3. The method for detecting the content of the refrigerant as claimed in claim 2, wherein: obtaining the current reversing time T of the four-way valvePractice ofThe method comprises the following steps:
in the test state, T is judged when the heating mode is performed2Whether a pressure spring plate touch signal is detected within time; if yes, recording the electrifying time T of the electric spring0', and obtaining the time T of the contact pressure elastic sheet of the left piston head in the four-way valve1’；
Determining the reversing time of the four-way valve to be T under the test conditionTesting＝T1’-T0’；
The testing state comprises that an inner fan of the unit is stopped, an outer fan of the unit is a middle windshield, the frequency of a compressor is V, and the step number of the electronic expansion valve is S.
4. The method for detecting the content of the refrigerant according to claim 2 or 3, wherein: obtaining the current reversing time T of the four-way valvePractice ofFurther comprising:
and under the test state, determining the compensation reversing time K of the four-way valves under different outer rings according to a fitting formula.
5. The method as claimed in claim 4, wherein the detecting step includes a step of detecting a refrigerant contentIs characterized in that: determining a commutation time T of the current four-way valvePractice ofIs TPractice of＝TTesting-K。
6. The method for detecting the content of the refrigerant as claimed in claim 5, wherein: determining the current refrigerant content Q as Q ═ TPractice of/TDatum。
7. The method for detecting the content of the refrigerant as claimed in claim 6, wherein: the test state further comprises: if not, judging whether the temperature of the inner pipe and the temperature of the outer pipe of the unit meet the standard in the measuring state or not; and if so, determining that the four-way valve has a fault.
8. A control device for detecting refrigerants of a cooling and heating machine type is characterized in that: the method comprises the following steps:
an acquisition module: the four-way valve is used for acquiring the reversing time of the four-way valve, acquiring the temperature of an inner pipe and the temperature of an outer pipe and acquiring a pressure elastic sheet touch signal;
a calculation module: the device is used for calculating the reversing time of the four-way valve under different outer rings and calculating the compensation reversing time of the four-way valve in a fitting manner;
a judging module: the four-way valve is used for judging whether the four-way valve fails or not according to whether a pressure elastic sheet touch signal is received within set time or not and whether the inner pipe temperature and the outer pipe temperature meet the standard in a test state or not;
a determination module: and the method is used for determining the content of the refrigerant according to the reversing time of the current four-way valve and the reversing time of the four-way valve in a standard state.
9. An air conditioner, characterized in that: the system comprises a computer readable storage medium and a processor, wherein a computer program is stored in the computer readable storage medium, and when the computer program is read and executed by the processor, the control method for detecting the refrigerant according to any one of claims 1 to 7 is realized.
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| WO2009051015A1 (en) * | 2007-10-19 | 2009-04-23 | Daikin Industries, Ltd. | Air conditioner and method of controlling air conditioner |
| CN110645673A (en) * | 2019-10-16 | 2020-01-03 | 南京天加环境科技有限公司 | Refrigerant shortage protection method for fixed-frequency air conditioner |
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| CN111503759A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Air conditioner outdoor unit, refrigerant detection method and storage medium |
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2021
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| JPH08261542A (en) * | 1995-03-20 | 1996-10-11 | Fujitsu General Ltd | Air conditioner |
| WO2009051015A1 (en) * | 2007-10-19 | 2009-04-23 | Daikin Industries, Ltd. | Air conditioner and method of controlling air conditioner |
| CN110736183A (en) * | 2018-07-18 | 2020-01-31 | 奥克斯空调股份有限公司 | Detection method and device for leakage of air-conditioning refrigerants |
| CN110645673A (en) * | 2019-10-16 | 2020-01-03 | 南京天加环境科技有限公司 | Refrigerant shortage protection method for fixed-frequency air conditioner |
| CN111503759A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Air conditioner outdoor unit, refrigerant detection method and storage medium |
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