CN105953357B - The control method of convertible frequency air-conditioner - Google Patents
The control method of convertible frequency air-conditioner Download PDFInfo
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- CN105953357B CN105953357B CN201610271186.3A CN201610271186A CN105953357B CN 105953357 B CN105953357 B CN 105953357B CN 201610271186 A CN201610271186 A CN 201610271186A CN 105953357 B CN105953357 B CN 105953357B
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- temperature sensor
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Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A kind of control method of convertible frequency air-conditioner, convertible frequency air-conditioner includes indoor evaporator, interior machine inlet air temperature sensor, interior machine evaporator coil temperature sensor, four-way reversing valve, outdoor condenser, outer machine inlet air temperature sensor, outer machine condenser coil temperature sensor, electric expansion valve, outer machine exhaust gas temperature sensor, compressor, outer machine suction temperature sensor, when which part temperature sensor breaks down, by analyzing influence of the failed temperature sensor to air-conditioning system, under the premise of ensuring that air-conditioning system is safe and reliable, appropriate adjustment operation of air conditioner frequency, electronic expansion valve opening etc. ensures that convertible frequency air-conditioner continues to run with, show that corresponding failure code reminds user to report for repairment simultaneously.Control method for frequency conversion air conditioner provided by the invention, it can make convertible frequency air-conditioner that can still be continued to run under the premise of ensuring safe and reliable when part temperature sensor breaks down, it allows users to, utmostly using the air-conditioning to break down, reduce the trouble that air-conditioning failure is brought to user.
Description
Technical field
The present invention relates to air conditioner technical field, control of especially a kind of convertible frequency air-conditioner when temperature sensor breaks down
Method processed.
Background technology
Convertible frequency air-conditioner occupies in the market because its comfort and energy saving ratio fixed frequency air conditioner have apparent advantage
Rate is gradually increased, but due to the control complexity of convertible frequency air-conditioner, more several temperature sensors, the probability to break down
It is bigger than fixed frequency air conditioner very much.When in these temperature sensors one or several failure when, in order to avoid air-conditioning because
It can not protect and damage in time, general convertible frequency air-conditioner manufacturer can be arranged air-conditioning by program and stop running immediately, it is necessary to etc.
It could normal use after temperature sensor that personnel to be repaired more renew or repair.Cannot be arrived in time due to maintenance personal or
Person because accessory shortage, user generally to wait for several days could normal use air-conditioning again, seriously affected user experience.Especially
It is in the case where being badly in need of the environment temperature using air-conditioning, and also It dones't help the situation for more advantage again for convertible frequency air-conditioner, user can also because cannot and
When repaired and bring more complaints to Air-conditioning Enterprise.
Invention content
It breaks down the present invention is intended to provide solving convertible frequency air-conditioner existing in the prior art any one temperature sensor
When air-conditioning the technical issues of being all unable to normal use, a kind of control method of convertible frequency air-conditioner is provided, the part of convertible frequency air-conditioner can be made
Ensure that air-conditioning remains to normal use when temperature sensor breaks down, reduces the trouble that air-conditioning failure is brought to user.
The present invention is mainly to be addressed by following technical proposals：A kind of control method of convertible frequency air-conditioner, frequency conversion are empty
It stealthily substitutes and includes indoor evaporator, interior machine inlet air temperature sensor, interior machine evaporator coil temperature sensor, four-way reversing valve, outdoor
Condenser, outer machine inlet air temperature sensor, outer machine condenser coil temperature sensor, electric expansion valve, outer machine delivery temperature pass
Sensor, compressor, when which part temperature sensor breaks down, by analyzing the failed temperature sensor to air-conditioning system
Influence, it is appropriate to adjust the guarantors such as operation of air conditioner frequency, electronic expansion valve opening under the premise of ensuring that air-conditioning system is safe and reliable
Card convertible frequency air-conditioner continues to run with, while showing that corresponding failure code reminds user to report for repairment.
Preferably, when interior machine inlet air temperature sensor failure, convertible frequency air-conditioner is according to maximum allowable running frequency
40%-90% is run, and does not adjust running frequency further according to interior machine inlet air temperature sensor feedback, when detecting other temperature sensing
When device feedback needs to carry out frequency limit, still frequency limit can be executed according to the normal limit frequency rule of other temperature sensors；It presses
When above-mentioned mode operation, while showing interior machine inlet air temperature sensor fault.
Preferably, when interior machine evaporator coil temperature sensor failure, under refrigeration or dehumidification mode, to prevent from steaming
It sends out device icing indoor unit and exception occurs, compressor continuous operation more than a few minutes are stopped after setting value, protect by electronic expansion valve opening
Original state is held no longer to change；Under heating mode, due to can not in time be protected in compressor overload, compressor may be caused
Reliability decrease, air-conditioning are out of service；When by above-mentioned mode operation, while showing interior machine evaporator coil temperature sensor event
Barrier.
Preferably, when outer machine inlet air temperature sensor failure, outdoor machine fan motor is run not with high wind always
Change again, the outer collected temperature of machine condenser coil temperature sensor when compressor is just to open is as outer machine inlet air temperature
Sensor temperature carries out the limitation of maximum frequency of operation, and the initial opening of electric expansion valve is also initially opened by this temperature value is corresponding
Degree executes；If air-conditioning is heating operation, defrost logic when normal operation is invalid, is changed to timing defrost, as long as the condensation of outer machine
Device coil temperature sensor temperature is less than 0 DEG C, and the accumulative operation of compressor reaches 45 minutes or more then into defrost；By above-mentioned mould
When formula is run, while showing outer machine inlet air temperature sensor fault.
Preferably, when outer machine condenser coil temperature sensor failure, under refrigeration or dehumidification mode, outer machine condensation
The anti-overheating protection of device coil temperature sensor is invalid, and air-conditioning allows the highest frequency of operation to be adjusted to the first oil return platform operation frequency
Rate, air-conditioning can continue to run until that appearance is once shut down because of protection, then air-conditioning is out of service, no longer restores；Heating mode
Under, if outer machine inlet air temperature sensor is more than or equal to 7 DEG C, air-conditioning continues to heat, and no longer defrost is run, and expansion valve opening is kept
Original state no longer changes；If outer machine inlet air temperature sensor temperature is less than 7 DEG C, air-conditioning is shut down, even if outer machine inlet air temperature passes
Sensor temperature rise is more than 7 DEG C, does not also restore to heat；When by above-mentioned mode operation, while showing outer machine condenser coil temperature
Sensor fault.
Preferably, when outer machine exhaust gas temperature sensor breaks down, to ensure that compressor reliability, air-conditioning stop fortune
Row, until outer machine exhaust gas temperature sensor fault recovery just allows to run again；When by above-mentioned mode operation, while showing outer machine
Exhaust gas temperature sensor failure.
Preferably, the convertible frequency air-conditioner further includes outer machine suction temperature sensor, and event occurs for outer machine suction temperature sensor
When barrier, electric expansion valve keeps original state no longer to change, while showing outer machine suction temperature sensor fault.
Preferably, when there is the temperature sensor fault of two above or more than two combinations, air-conditioning is out of service, together
When show corresponding failure code in turn.
The advantageous effect that the present invention is brought is：Control method for frequency conversion air conditioner provided by the invention can make air-conditioning in part temperature
It can still continue to run with, allow users to utmostly using hair under the premise of ensuring safe and reliable when spending sensor failure
The air-conditioning of raw failure reduces the trouble that air-conditioning failure is brought to user.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of convertible frequency air-conditioner provided by the invention；
1- indoor evaporators；Machine inlet air temperature sensor in 2-；Machine evaporator coil temperature sensor in 3-；4- four-ways
Reversal valve；
Condenser outside the rooms 5-；The outer machine inlet air temperature sensors of 6-；The outer machine condenser coil temperature sensors of 7-；8- electronics is swollen
Swollen valve；
The outer machine exhaust gas temperature sensors of 9-；10- compressors；The outer machine suction temperature sensors of 11-.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.It should manage
It solves, specific embodiment described in this part is used only for explaining the present invention, is not intended to limit the present invention.
A kind of control method of convertible frequency air-conditioner, convertible frequency air-conditioner includes indoor evaporator 1, interior machine inlet air temperature sensor 2, interior
Machine evaporator coil temperature sensor 3, four-way reversing valve 4, outdoor condenser 5, outer machine inlet air temperature sensor 6, the condensation of outer machine
Device coil temperature sensor 7, electric expansion valve 8, outer machine exhaust gas temperature sensor 9, compressor 10, as shown in Figure 1, for the present invention
A kind of structural schematic diagram of the convertible frequency air-conditioner provided.As highly preferred embodiment of the present invention, convertible frequency air-conditioner further includes in the present invention
Outer machine suction temperature sensor 11.
Interior machine inlet air temperature sensor 2 sends out open and close machine and frequency mainly for detection of indoor air temperature to microprocessor
Rate lifts signal；Interior machine evaporator coil temperature sensor 3 is removed mainly for detection of the temperature of indoor machine evaporation with determination
Wet, indoor machine during heating wind turbine open and close prevent indoor set heat exchanger from freezing, compressor are prevented when room temperature is excessively high when freezing, defrosting
Overload etc.；Can outer machine inlet air temperature sensor 6 be opened mainly for detection of outside air temperature for the decision of outdoor microprocessor
Machine or defrosting；For outer machine condenser coil temperature sensor 7 mainly for detection of outer machine condenser coil temperature, when heating, is used for room
It is protected for overheating protection or anti-freeze when outer defrosting, refrigeration or heating；Outer machine exhaust gas temperature sensor 9 is used to arrange in compressor
Gas when the temperature is excessively high protects system automatically, controls the lifting of electric expansion valve open degree and compressor operation frequency；
Outer machine suction temperature sensor 11 is for detecting outer machine suction temperature.
Control method for frequency conversion air conditioner provided by the invention breaks down when one of in above 6 temperature sensors
When, remain to according to following control methods control the convertible frequency air-conditioner ensure safety by under the premise of continue to run with：
When interior machine inlet air temperature sensor 2 breaks down, air-conditioning is transported according to the 40%-90% of maximum allowable running frequency
Row, most preferred embodiment are 70% operations according to maximum allowable running frequency, are not fed back further according to interior machine inlet air temperature sensor 2
To adjust running frequency.It, still can be according to other temperature when detecting that other temperature sensor feedbacks need to carry out frequency limit
The normal limit frequency rule of sensor executes frequency limit；When by above-mentioned mode operation, while showing interior machine inlet air temperature sensor
Failure, generic failure are shown as E1.
When interior machine evaporator coil temperature sensor 3 breaks down, if under refrigeration or dehumidification mode, to prevent from steaming
It sends out device icing indoor unit and exception occurs, for compressor continuous operation more than a few minutes are stopped after setting value, specific embodiment is compression
Machine continuous operation is more than to stop after 30 minutes 5 minutes, and electronic expansion valve opening keeps original state no longer to change；If in heating mould
Under formula, due to can not in time be protected in 10 overload of compressor, 10 reliability decrease of compressor, air-conditioning may be caused to stop fortune
Row；When by above-mentioned mode operation, while showing interior 3 failure of machine evaporator coil temperature sensor, generic failure code is shown as
E3。
When outer machine inlet air temperature sensor 6 breaks down, outdoor machine fan motor is no longer changed with the operation of high wind always,
Outer 7 collected temperature of machine condenser coil temperature sensor when compressor 10 is just to open is sensed as outer machine inlet air temperature
6 temperature of device carries out the limitation of maximum frequency of operation, and the initial opening of electric expansion valve 8 also presses the corresponding initial opening of this temperature value
It executes；If air-conditioning is heating operation, defrost logic when normal operation is invalid, timing defrost is changed to, as long as outer machine condenser
6 temperature of coil temperature sensor is less than 0 DEG C, and the accumulative operation of compressor 10 reaches 45min or more and then enters defrost；By above-mentioned mould
When formula is run, while showing outer 6 failure of machine inlet air temperature sensor, generic failure code is shown as F6.
When outer machine condenser coil temperature sensor 7 breaks down, under refrigeration or dehumidification mode, outer machine condenser coil
7 anti-overheating protection of temperature sensor is invalid, and air-conditioning allows the highest frequency of operation to be adjusted to the first oil return platform running frequency, empty
Tune can continue to run until that appearance is once shut down because of protection, then air-conditioning is out of service, no longer restores；Under heating mode, if outside
Machine inlet air temperature sensor 6 is more than or equal to 7 DEG C, then air-conditioning continues to heat, and no longer defrost is run, and expansion valve opening keeps initial shape
State no longer changes；If outer 6 temperature of machine inlet air temperature sensor is less than 7 DEG C, air-conditioning is shut down, even if outer machine inlet air temperature sensor 6
Temperature rise is more than 7 DEG C, does not also restore to heat；When by above-mentioned mode operation, while showing outer machine condenser coil temperature sensing
7 failure of device, generic failure code are shown as E2.
When outer machine exhaust gas temperature sensor 9 breaks down, to ensure 10 reliability of compressor, air-conditioning is out of service, directly
Just allow to run again to outer 9 fault recovery of machine exhaust gas temperature sensor；When by above-mentioned mode operation, while showing outer machine exhaust
9 failure of temperature sensor is general to show failure code F4.
Convertible frequency air-conditioner further includes outer machine suction temperature sensor 11 in the present invention.When outer machine exhaust gas temperature sensor 11 occurs
When failure, electric expansion valve 8 keeps original state no longer to change, and air-conditioning continues to run with, while showing that failure code FA is reminded and using
It reports for repairment in time at family.
When there is the temperature sensor fault of two above or more than two combinations, air-conditioning is out of service, while in turn
Show corresponding failure code.
The advantageous effect that the present invention is brought is：Control method for frequency conversion air conditioner provided by the invention can make air-conditioning in part temperature
It can still be continued to run under the premise of ensuring safe and reliable when spending sensor failure, control method is simple, allows users to
Utmostly using the air-conditioning to break down, the trouble that air-conditioning failure is brought to user is reduced.
It should be understood that these are only the preferred embodiment of the present invention, the rights protection of the present invention cannot be therefore limited
Range, it is every using equivalent structure transformation made by description of the invention and accompanying drawing content, it is applied directly or indirectly in other
Relevant technical field is included in the claims of the present invention.
Claims (7)
1. a kind of control method of convertible frequency air-conditioner, convertible frequency air-conditioner includes indoor evaporator, interior machine inlet air temperature sensor, the steaming of interior machine
Send out device coil temperature sensor, four-way reversing valve, outdoor condenser, outer machine inlet air temperature sensor, outer machine condenser pan tube temperature
Spend sensor, electric expansion valve, outer machine exhaust gas temperature sensor, compressor, it is characterised in that：When which part temperature sensor
When breaking down, by analyzing influence of the failed temperature sensor to air-conditioning system, ensuring that air-conditioning system is safe and reliable
Under the premise of, adjustment operation of air conditioner frequency, electronic expansion valve opening ensure that convertible frequency air-conditioner continues to run with, while showing corresponding failure
Code reminds user to report for repairment, wherein when interior machine evaporator coil temperature sensor failure, under refrigeration or dehumidification mode,
Abnormal to prevent evaporator icing indoor unit from occurring, compressor continuous operation is more than to stop a few minutes after setting value, electronic expansion
Valve opening keeps original state no longer to change；Under heating mode, air-conditioning is out of service；When by above-mentioned mode operation, show simultaneously
Interior machine evaporator coil temperature sensor fault.
2. a kind of control method of convertible frequency air-conditioner according to claim 1, it is characterised in that：When interior machine inlet air temperature senses
When device breaks down, convertible frequency air-conditioner is run according to the 40%-90% of maximum allowable running frequency, not further according to interior machine inlet air temperature
Sensor feedback adjusts running frequency, when detect interior machine evaporator coil temperature sensor, outer machine inlet air temperature sensor,
It, still can be according to when outer machine condenser coil temperature sensor or outer machine exhaust gas temperature sensor feedback need to carry out frequency limit
Interior machine evaporator coil temperature sensor, outer machine inlet air temperature sensor, outer machine condenser coil temperature sensor or outer machine
The normal limit frequency rule of exhaust gas temperature sensor executes frequency limit；When by above-mentioned mode operation, while showing interior machine into wind-warm syndrome
Spend sensor fault.
3. a kind of control method of convertible frequency air-conditioner according to claim 1, it is characterised in that：When outer machine inlet air temperature senses
When device breaks down, outdoor machine fan motor is no longer changed with the operation of high wind always, outer machine condensation when compressor is just to open
The collected temperature of device coil temperature sensor carries out the limitation of maximum frequency of operation as outer machine inlet air temperature sensor temperature,
The initial opening of electric expansion valve is also pressed the corresponding initial opening of this temperature value and is executed；It is normal to transport if air-conditioning is heating operation
Defrost logic when row is invalid, is changed to timing defrost, as long as outer machine condenser coil temperature sensor temperature is less than 0 DEG C, and presses
The accumulative operation of contracting machine, which reaches 45 minutes or more, then enters defrost；When by above-mentioned mode operation, while showing that outer machine inlet air temperature passes
Sensor failure.
4. a kind of control method of convertible frequency air-conditioner according to claim 1, it is characterised in that：When outer machine condenser pan tube temperature
When spending sensor failure, under refrigeration or dehumidification mode, the outer anti-overheating protection of machine condenser coil temperature sensor is invalid, empty
Adjust the highest frequency for allowing operation to be adjusted to the first oil return platform running frequency, air-conditioning can continue to run until occur it is primary because
It protects and shuts down, then air-conditioning is out of service, no longer restores；Under heating mode, if outer machine inlet air temperature sensor is more than or equal to 7
DEG C, then air-conditioning continues to heat, and no longer defrost is run, and expansion valve opening keeps original state no longer to change；If outer machine inlet air temperature
Sensor temperature is less than 7 DEG C, and air-conditioning is shut down, even if outer machine inlet air temperature sensor temperature does not restore to make if being increased beyond 7 DEG C
Heat；When by above-mentioned mode operation, while showing outer machine condenser coil temperature sensor fault.
5. a kind of control method of convertible frequency air-conditioner according to claim 1, it is characterised in that：When outer machine delivery temperature senses
When device breaks down, to ensure compressor reliability, air-conditioning is out of service, until outer machine exhaust gas temperature sensor fault recovery
Allow to run again；When by above-mentioned mode operation, while showing outer machine exhaust gas temperature sensor failure.
6. a kind of control method of convertible frequency air-conditioner according to claim 1, it is characterised in that：The convertible frequency air-conditioner further includes
Outer machine suction temperature sensor, when outer machine suction temperature sensor failure, electric expansion valve keeps original state no longer to become
Change, air-conditioning keeps normal work, while showing outer machine suction temperature sensor fault.
7. a kind of control method of convertible frequency air-conditioner according to claim 1, it is characterised in that：At least two more than appearance
When the temperature sensor fault of combination, air-conditioning is out of service, while showing corresponding failure code in turn.
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| CN106545960B (en) * | 2016-10-18 | 2019-06-28 | 广东美的暖通设备有限公司 | New blower control method and new blower |
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| CN107436016B (en) * | 2017-07-27 | 2020-02-28 | 广东美的制冷设备有限公司 | Air conditioner, method and system for detecting leakage of refrigerant in air conditioner and storage medium |
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| CN111878971A (en) * | 2020-06-30 | 2020-11-03 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
| CN114646179A (en) * | 2022-03-16 | 2022-06-21 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner outdoor unit, air conditioner and electronic equipment |
| CN115507572B (en) * | 2022-10-31 | 2023-07-04 | 宁波奥克斯电气股份有限公司 | Error detection method and device for electronic expansion valve, air conditioner and storage medium |
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| CN105953357A (en) | 2016-09-21 |
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Inventor after: Ying Biye Inventor after: Huang Ning Inventor before: Ying Biye Inventor before: Huang Ning Inventor before: Jin Guangyu |
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Effective date of registration: 20170519 Address after: 315191 Yinzhou District Province, Ningbo City, Jiang Shan town on the village of summer ho Applicant after: AUX air conditioning Limited by Share Ltd Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Applicant before: Ningbo AUX Group. |
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