CN106801972B - A kind of transducer air conditioning protection control method and transducer air conditioning - Google Patents
A kind of transducer air conditioning protection control method and transducer air conditioning Download PDFInfo
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- CN106801972B CN106801972B CN201611223569.XA CN201611223569A CN106801972B CN 106801972 B CN106801972 B CN 106801972B CN 201611223569 A CN201611223569 A CN 201611223569A CN 106801972 B CN106801972 B CN 106801972B
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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
-
- 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
- F24F2110/10—Temperature
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/59—Remote control for presetting
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of transducer air conditioning guard method, comprising: air conditioner booting；Choose the input/output variable of controller, calculate the practical temperature difference and the practical difference variation rate in the sampling period, the practical temperature difference and practical difference variation rate are inputted in the input terminal of controller, electric signal is exported by controller output end and controls compressor according to the setting mode operation set by remote controler；After compressor runs the period 1; controller starts to detect compressor air suction temperature and compared with setting compressor air suction temperature; if compressor air suction temperature detection value is lower than the first lower threshold; generate the first interrupt requests; if compressor air suction temperature is consistently less than the first lower threshold in the first detection cycle, compressor shutdown is controlled, controller starts again at timing to second round; the interruption ends, control compressor restore according to the setting mode operation set by remote controler.A kind of transducer air conditioning is disclosed simultaneously.The present invention has the advantages that stable and using effect is good.
Description
Technical field
It protects control method the present invention relates to air-conditioning technique field more particularly to a kind of transducer air conditioning and uses and be somebody's turn to do
The transducer air conditioning of transducer air conditioning protection control method.
Background technique
Frequency-conversion air-conditioning system currently sold on the market is primarily referred to as combining variable-frequency control technique and mature electronic expansion
Valve regulation method receives detection signal using microprocessor and adjusts output signal by PID, further to control the upper of needle
Lower movement controls the accurate of working medium flow in refrigeration system to realize, avoids high frequent start and stop.
In an ideal frequency-conversion air-conditioning system, ideal electric expansion valve is in regulating system flow, it is desirable to keep
The flow for flowing into the liquid refrigerant of evaporator downstream is just equal with the evaporation capacity of evaporator.Exactly because such want
Ask, the aperture of electromagnetic expanding valve needs change according to the variation of cooling load of the air-conditioning system, timely in regulating system refrigerant stream
Amount, to keep the equilibrium of supply and demand.But evaporator used in the prior art is not the evaporator of perfect condition, if its
In one or more block, while the cooling capacity of air-conditioning needs to increase, and at this moment actually enters the refrigerant flow of evaporator
Be relative to actual requirement it is lower, the overtemperature of evaporator outlet will continue to rise, whithin a period of time, liquid supply rate one
Directly it is less than requirement, so that evaporator occurs freezing or frost, seriously affects the service efficiency of evaporator.Moreover, by
In expansion valve itself there is also the situation that delay is adjusted, the icing of evaporator has been further aggravated.It repairs if looked into not in time, can also
Influence the service life of other functional components in air-conditioning equipment.
It in the prior art, being capable of the case where one or more is blocked in evaporator there is no a kind of control method
Under, air-conditioning system is reasonably protected.
Summary of the invention
It, being capable of the case where one or more is blocked in evaporator the present invention is directed to disclose a kind of reasonable control method
Under, the phenomenon that intervened in advance, evaporator is avoided to freeze, air-conditioning system is reasonably protected.
The present invention provides a kind of transducer air conditioning guard method, which comprises the following steps:
Air conditioner booting；
The input/output variable for choosing controller, using the detected value conduct for the temperature sensor being arranged in air-conditioned room
First temperature variable calculates the practical temperature difference, the reality using the set temperature of setting in the controller as second temperature variable
The border temperature difference is equal to the difference of the first temperature variable and second temperature variable；Using compressor frequency as output variable；
The practical difference variation rate in the sampling period is calculated, inputs the practical temperature difference and the practical temperature difference in the input terminal of controller
Change rate exports electric signal by the controller output end and controls compressor according to the setting mode fortune set by remote controler
Row；
After the compressor is according to setting mode operation to period 1, the controller starts to detect compressor suction
Temperature degree and compared with the compressor air suction temperature stored in controller, if under compressor air suction temperature detection value is lower than first
Threshold value is limited, generates the first interrupt requests, controller, which starts timing to the first detection cycle, to be terminated, if compressor air suction temperature exists
It is consistently less than the first lower threshold in first detection cycle, then electric signal control compression is exported by the output end of the controller
Machine is shut down, and after compressor shutdown, controller, which starts again at timing to second round, to be terminated, the interruption ends, and controller output end is defeated
Electric signal control compressor restores according to the setting mode operation set by remote controler out.
Further, at the end of second round, controller Sampling Compression machine suction temperature detected value again, if second week
At the end of phase, compressor air suction temperature detection value is higher than the first upper limit threshold, then exports electricity by the output end of the controller
Signal controls compressor and restores according to the setting mode operation set by remote controler.
Further, after compressor restores according to the setting mode operation set by remote controler, controller is persistently supervised
Measured compressed machine suction temperature and compared with the compressor air suction temperature stored in controller, if compressor air suction temperature detection value
Again below the first lower threshold, then the first interrupt requests are generated again.
Further, if at the end of second round, compressor air suction temperature is lower than the second upper limit threshold, then by described
The output end output electric signal control compressor of controller is run according to First Speed frequency reducing, and according to the frequency after frequency reducing.
Further, if at the end of second round, compressor air suction temperature is lower than third upper limit threshold, then by described
The output end output electric signal of controller controls compressor according to second speed frequency reducing and increases the aperture of electric expansion valve, described
Second speed is less than First Speed
Further, after the compressor is according to setting mode operation to period 1, the controller is opened simultaneously
Beginning detects indoor coil pipe and compared with the indoor coil pipe stored in controller, if indoor coil pipe detected value is low
In the second lower threshold, the second interrupt requests are generated, controller, which starts timing to the first detection cycle, to be terminated, if indoor coil
Temperature is consistently less than the second lower threshold in the first detection cycle, then exports electric signal control by the output end of the controller
Compressor shutdown processed, after compressor shutdown, controller, which starts again at timing to second round, to be terminated, the interruption ends, and controller is defeated
Outlet exports electric signal control compressor and restores according to the setting mode operation set by remote controler.
Further, at the end of second round, controller samples indoor coil pipe again, if second round terminates
When, indoor coil pipe is higher than the first upper limit threshold, then exports electric signal by the output end of the controller and control compressor
Restore according to the setting mode operation set by remote controler.
Further, after compressor restores according to the setting mode operation set by remote controler, controller is persistently supervised
Indoor coil pipe and compared with the indoor coil pipe stored in controller is surveyed, if indoor coil pipe is again below second
Lower threshold then generates the second interrupt requests again.
Preferably, the priority of first interrupt requests is higher than second interrupt requests, and the period 1 is 2 points
Clock, the length of first detection cycle are 5 minutes, and second round length is 3 minutes, and the first lower threshold is -1 DEG C, second
Lower threshold is 0 DEG C, and the first upper limit threshold is 5 DEG C, the second upper limit threshold is 0 DEG C, and third upper limit threshold is 1 DEG C.
Transducer air conditioning guard method disclosed in this invention, by during the auto-controll operation of transducer air conditioning
Interrupt requests are automatically formed, so that before one or more blocking for being likely due to evaporator freezes, to automatic control
The phenomenon that process is intervened in advance, and evaporator is avoided to freeze extends the service life of components in equipment.In air conditioner
In the case where frequently or repeatedly there is pro-active intervention, similar situation can also be counted.
The present invention also discloses a kind of transducer air conditionings, are controlled using transducer air conditioning guard method.Frequency conversion
Air conditioner guard method the following steps are included:
Air conditioner booting；
The input/output variable for choosing controller, using the detected value conduct for the temperature sensor being arranged in air-conditioned room
First temperature variable calculates the practical temperature difference, the reality using the set temperature of setting in the controller as second temperature variable
The border temperature difference is equal to the difference of the first temperature variable and second temperature variable；Using compressor frequency as output variable；
The practical difference variation rate in the sampling period is calculated, inputs the practical temperature difference and the practical temperature difference in the input terminal of controller
Change rate exports electric signal by the controller output end and controls compressor according to the setting mode fortune set by remote controler
Row；
After the compressor is according to setting mode operation to period 1, the controller starts to detect compressor suction
Temperature degree and compared with the compressor air suction temperature stored in controller, if under compressor air suction temperature detection value is lower than first
Threshold value is limited, generates the first interrupt requests, controller, which starts timing to the first detection cycle, to be terminated, if compressor air suction temperature exists
It is consistently less than the first lower threshold in first detection cycle, then electric signal control compression is exported by the output end of the controller
Machine is shut down, and after compressor shutdown, controller, which starts again at timing to second round, to be terminated, the interruption ends, and controller output end is defeated
Electric signal control compressor restores according to the setting mode operation set by remote controler out.
Air conditioner disclosed in this invention is stablized with the course of work, the high advantage of degree of intelligence.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart of the first embodiment of transducer air conditioning guard method disclosed in this invention；
Fig. 2 is the flow chart of second of embodiment of transducer air conditioning guard method disclosed in this invention；
Fig. 3 is the flow chart of the third embodiment of transducer air conditioning guard method disclosed in this invention；
Fig. 4 is the control method process in transducer air conditioning guard method shown in fig. 1 or fig. 2 at the end of second round
Figure.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Shown in Figure 1 is a kind of flow chart of implementation method of transducer air conditioning guard method disclosed in this invention.?
Transducer air conditioning defined in the present embodiment refers to there there is for set operating mode definition in the controller of air conditioner itself
Program, can making the fan in air conditioner, electric expansion valve, wind deflector, compressor, solenoid valve etc., all can pass through electric signal
The equipment of control, with environment temperature, indoor load continuous variation and adaptability acts, it is empty further to automatically control timely adjustment
The capacity of adjusting system eliminates indoor load and outdoor load, to keep the comfortable air-conditioning system of air-conditioned room.
Since air-conditioning system is the complexity for being formed and being influenced by external condition by multiple components, a variety of heat transfer process
System, between the multiple equipment in system and external environment, work meet between not there is only and its it is complicated connect each other,
There is also the factors of many uncertain dynamic changes.So in the prior art, transducer air conditioning uses FUZZY ALGORITHMS FOR CONTROL
It is controlled.The basic principle that fuzzy control is established is to eliminate error as early as possible, will be formed both according to the algorithm of long-term plenty of time
Fixed program, and be stored in the memory of controller, it is used for real-time control, usually only forms the control of an output
Amount, that is, the frequency of supply of frequency-changeable compressor.In control method described above, the control of air-conditioning system is automatic complete
At, human intervention is not needed in the whole process, the aperture of wherein electric expansion valve is adjusted by controller, and then passes through tune
The flow for controlling cryogen adjusts the heat exchange amount of heat exchanger.If evaporator employed in air conditioner when leaving the factory i.e. have all the way or
Multichannel blocking, only part can work under set operating condition, and controller can not carry out the judgement of active, only pass through evaporator
The acceptable deviation range of rated value and rated value of evaporation capacity is controlled to adjust.If the whole cooling capacity of air-conditioning system needs
Increase, then there are the error that system can not be adjusted directly, electric expansion valve also can not be by accurate for liquid supply rate and requirement
The phenomenon that detection parameters control aperture, and evaporator freezes.Error is with gradually bigger between the operation of system, evaporator knot
Ice is even more serious.Problem exists for a long time causes irreversible damage to other functional components.
To solve the above-mentioned problems, the equipment in air-conditioning system is protected, is existed between liquid supply rate and requirement
When implacable gap, gap expanding is avoided, and counts corresponding parameter, for subsequent improvement, adjusts the scene of providing really
The support of parameter, present embodiment discloses a kind of guard methods of transducer air conditioning, specifically includes the following steps:
Air conditioner booting, user is worked by remote control control air conditioner in refrigeration or dehumidification mode, and passes through remote controler
Set the temperature of air-conditioned room.The input/output variable for choosing controller of air conditioner, using the temperature being arranged in air-conditioned room
The detected value of sensor is as the first temperature variable, using the set temperature of setting in the controller as second temperature variable.
The practical temperature difference is calculated, in the present embodiment, the practical temperature difference is equal to the difference between the first temperature variable and second temperature variable.It adopts
Use compressor frequency as output variable.
For air conditioner, stable input variable is needed to realize subsequent control, so, it has been normally set up one and has adopted
Sample period, and the practical difference variation rate in calculating cycle during the sampling period.Practical difference variation rate be equal to the practical temperature difference with
The ratio in sampling period, controller input terminal input the practical temperature difference and practical difference variation rate.Output end exports electric signal control
Compressor is according to the setting mode operation set by remote controler, after compressor starts operation, i.e., according to FUZZY ALGORITHMS FOR CONTROL
Output quantity work.The length in sampling period can be adjusted according to parameters such as power, the refrigerating capacitys of air conditioner, the sampling period
Length is it is not limited here.
Since there is certain hysteresis quality using the control system of FUZZY ALGORITHMS FOR CONTROL, so the structure of evaporator itself lacks
It is sunken to embody after running for a period of time, the purpose of the present embodiment is that carrying out pro-active intervention before evaporator icing, avoid
There is the phenomenon that evaporator freezes.Specifically, after compressor starts run to the period 1, controller starts to detect
Compressor air suction temperature and compared with the compressor air suction temperature stored in controller.The compressor air suction temperature stored in controller
Degree is when being in normal operating condition according to evaporator, that is, preferably, the operating status in the case where not blocking, simultaneously
Consider what the delay effect of electric expansion valve was calculated.The first lower threshold, the first lower limit are also previously stored in controller
Threshold value is calculated according to laboratory values of a large amount of model machines under different operating conditions, and pre-stored first lower threshold is said
Bright, if compressor air suction temperature is lower than the first lower threshold, probably there is icing phenomenon in evaporator surface.Therefore, when
At the end of compressor starts were run to the period 1, the defect of evaporator itself is the flow that can be significantly embodied in refrigerant
On, and amplification is adjusted by the lag of electric expansion valve, further influence the detected value of compressor air suction temperature.If compressor
Suction temperature detected value is lower than the first lower threshold, then generates an interruption in the control method provided by the present embodiment and ask
It asks, i.e. the first interrupt requests, beginning timing to the first detection cycle terminates after controller receives the first interrupt requests, if pressure
Contracting machine suction temperature is consistently less than the first lower threshold in the first detection cycle, then exports telecommunications by the output end of controller
Number control compressor shutdown.The length of first detection cycle is preferably 5 minutes, and the first detection cycle of setting is primarily to exclude
Interference of the other factors to compressor air suction temperature avoids interfering with each other between multiple control flows, influences control efficiency.Compression
After machine is shut down, controller, which starts again at timing to second round, to be terminated.The interruption ends at this time, controller output end export electric signal
Control compressor is switched on and restores according to the setting mode operation set by remote controler.There are above-mentioned feelings in controller record simultaneously
The number of condition and the actually detected value of compressor air suction temperature provide the data at scene for subsequent maintenance, improvement.
It is illustrated in figure 4 a kind of preferred mode, if at the end of second round, compressor air suction temperature is lower than second
Upper limit threshold then exports electric signal by the output end of controller and controls compressor according to First Speed frequency reducing operation until compressing
Machine suction temperature detected value is higher than the first upper limit threshold.Likewise, if compressor air suction temperature is lower than at the end of second round
Third upper limit threshold then exports electric signal by the output end of controller and controls compressor according to second speed frequency reducing operation, together
When active control increase electric expansion valve aperture, until compressor air suction temperature detection value be higher than the first upper limit threshold.It is above-mentioned
Second speed be less than First Speed, for needs refrigerating capacity realize gradient adjust.If at the end of second round, compressor
Suction temperature is higher than third upper limit threshold and is lower than the first upper limit threshold, then exports electric signal control by the output end of controller
Compressor is according to the frequency operation of finish time period 1 until compressor air suction temperature detection value is higher than the first upper limit threshold.
These three situations are all another layer of protections except above-mentioned interruption process to evaporator, avoid under non-limit state, evaporate
Device surface freezes, and not exclusively sacrifices the efficiency of air-conditioning system, ensure that the experience of user.Above-mentioned first upper limit threshold is excellent
Be selected as 5 DEG C, the second upper limit threshold be preferably 0 DEG C, third upper limit threshold is preferably 1 DEG C, the first lower threshold is preferably -1 DEG C.When
Compressor air suction temperature is higher than after the first upper limit threshold, and air conditioner is continued to run according to the control model of setting.
In operational process later, compressor restores according to the setting mode operation set by remote controler, controller
Compressor air suction temperature is continued to monitor and compared with the compressor air suction temperature stored in controller, if compressor air suction temperature
Detected value then generates the first interrupt requests again below the first lower threshold again.
It is illustrated in figure 3 the flow chart of another embodiment disclosed in this invention, in the actual operation of the present embodiment
In the process, control system protects equipment using two sets of parallel testing processes.After the compressor operation period 1,
The controller starts simultaneously at detection indoor coil pipe and compared with the indoor coil pipe stored in controller, if indoor
Coil temperature detected value is lower than the second lower threshold, generates the second interrupt requests, and controller starts timing to the first detection cycle
Terminate, if indoor coil pipe is consistently less than the second lower threshold in the first detection cycle, equally passes through the control
The output end output electric signal of device controls compressor shutdown, and after compressor shutdown, controller starts again at timing to second round
Terminate, the interruption ends, controller output end exports electric signal control compressor and restores according to the setting mould set by remote controler
Formula operation.
Similar, in this parallel control mode, one kind is more preferably selected as, at the end of second round,
Controller samples the detected value of indoor coil pipe again, if indoor coil pipe detected value is higher than the first upper limit threshold,
Electric signal, which is exported, by the output end of controller controls compressor recovery according to the setting mode set by remote controler, automatic root
It is run according to air-conditioned room internal loading.If indoor coil pipe detected value is lower than the first upper limit threshold, even if second round ties
Beam then still controls compressor frequency reducing operation according to the actually detected value of indoor coil pipe.Specifically if indoor coil
Temperature is greater than 0 DEG C and less than 1 DEG C, then controls compressor frequency reducing, according to the frequency operation of 1Hz/10s until indoor coil pipe is high
In 5 DEG C of the first upper limit threshold, if indoor coil pipe is higher than 1 DEG C and less than 3 DEG C, at the end of maintaining the first detection cycle
Compressor operating frequency operation, until indoor coil pipe detected value is higher than 5 DEG C of the first upper limit threshold.Both of these case is also all
A kind of protection to compressor and other functional components, while avoiding evaporator surface from freezing, and not exclusively sacrifice air-conditioning
The active regulatory function of system.In the present embodiment, the length of period 1 is preferably 2 minutes, and second round is preferably 3 points
Clock.Second lower threshold is 0 DEG C.
As shown in figure 3, the first interruption control and the second interruption control are substantially parallel.The first interruption control can be set
System and second interrupts control with same priority, using the control process of first in first out.But due to evaporator blocking
Position can not determine, so, the deviation that the detected value of indoor coil pipe is included is likely larger than the inspection of compressor air suction temperature
The deviation that measured value is included, so, in the present embodiment, the priority for being preferably provided with the first interruption control is higher than second and interrupts
The priority of control, so that the starting of intervention program is more reasonable.
Transducer air conditioning guard method disclosed in this invention, by during the auto-controll operation of transducer air conditioning
Interrupt requests are automatically formed, so that before one or more blocking for being likely due to evaporator freezes, to automatic control
The phenomenon that process is intervened in advance, and evaporator is avoided to freeze extends the service life of components in equipment.In air conditioner
In the case where frequently or repeatedly there is pro-active intervention, similar situation can also be counted, and further alarm or incite somebody to action
Statistical data, duty parameter are exported to other terminals or host computer, are further analyzed conducive to parameter, or are actively carried out
Maintenance.
The present invention discloses a kind of transducer air conditionings, using the transducer air conditioning as disclosed in above-mentioned multiple embodiments
Guard method is protected, detailed description of the transducer air conditioning guard method referring to above embodiments and description attached drawing, application
The transducer air conditioning that the method as disclosed in above-mentioned multiple embodiments is controlled can achieve same technical effect.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of transducer air conditioning guard method, which comprises the following steps:
Air conditioner booting；
The input/output variable for choosing controller, using the detected value for the temperature sensor being arranged in air-conditioned room as first
Temperature variable calculates the practical temperature difference, the practical temperature using the set temperature of setting in the controller as second temperature variable
Difference is equal to the difference of the first temperature variable and second temperature variable；Using compressor frequency as output variable；
The practical difference variation rate in the sampling period is calculated, inputs the practical temperature difference and practical difference variation in the input terminal of controller
Rate exports electric signal by the controller output end and controls compressor according to the setting mode operation set by remote controler；
After the compressor is according to setting mode operation to period 1, the controller starts to detect compressor air suction temperature
Spend and compared with the compressor air suction temperature stored in controller, if compressor air suction temperature detection value be lower than the first lower limit threshold
Value generates the first interrupt requests, and controller, which starts timing to the first detection cycle, to be terminated, if compressor air suction temperature is first
It is consistently less than the first lower threshold in detection cycle, then electric signal control compressor is exported by the output end of the controller and stopped
Machine, after compressor shutdown, controller, which starts again at timing to second round, to be terminated, the interruption ends, controller output end output electricity
Signal controls compressor and restores according to the setting mode operation set by remote controler；
Wherein, the compressor air suction temperature stored in controller is calculated under the following conditions: evaporator is in ideal
And the operating status not blocked and the delay effect for considering electric expansion valve.
2. transducer air conditioning guard method according to claim 1, which is characterized in that further comprising the steps of:
At the end of second round, controller Sampling Compression machine suction temperature detected value again, if at the end of second round, compression
Machine suction temperature detected value is higher than the first upper limit threshold, then exports electric signal by the output end of the controller and control compressor
Restore according to the setting mode operation set by remote controler.
3. transducer air conditioning guard method according to claim 2, which is characterized in that further comprising the steps of:
After compressor restores according to the setting mode operation set by remote controler, controller continues to monitor compressor air suction temperature
Spend and compared with the compressor air suction temperature stored in controller, if under compressor air suction temperature detection value is again below first
Threshold value is limited, then generates the first interrupt requests again.
4. transducer air conditioning guard method according to claim 3, which is characterized in that if at the end of second round, pressure
Contracting machine suction temperature is lower than the second upper limit threshold, then by the output end of the controller export electric signal control compressor according to
First Speed frequency reducing, and run according to the frequency after frequency reducing.
5. transducer air conditioning guard method according to claim 4, which is characterized in that if at the end of second round, pressure
Contracting machine suction temperature is lower than third upper limit threshold, then by the output end of the controller export electric signal control compressor according to
Second speed frequency reducing and the aperture for increasing electric expansion valve, the second speed are less than First Speed.
6. transducer air conditioning guard method according to any one of claims 1 to 5, which is characterized in that further include following step
It is rapid:
After the compressor is according to setting mode operation to period 1, the controller starts simultaneously at detection indoor coil
Temperature and compared with the indoor coil pipe stored in controller, if indoor coil pipe detected value is lower than the second lower limit threshold
Value generates the second interrupt requests, and controller, which starts timing to the first detection cycle, to be terminated, if indoor coil pipe is in the first inspection
It surveys in the period and is consistently less than the second lower threshold, then electric signal control compressor is exported by the output end of the controller and stopped
Machine, after compressor shutdown, controller, which starts again at timing to second round, to be terminated, the interruption ends, controller output end output electricity
Signal controls compressor and restores according to the setting mode operation set by remote controler.
7. transducer air conditioning guard method according to claim 6, which is characterized in that further comprising the steps of:
At the end of second round, controller samples indoor coil pipe again, if at the end of second round, indoor coil pipe
Higher than the first upper limit threshold, then electric signal is exported by the output end of the controller and control compressor and restored according to passing through remote control
The setting mode operation of device setting.
8. transducer air conditioning guard method according to claim 7, which is characterized in that further comprising the steps of:
After compressor restores according to the setting mode operation set by remote controler, controller continues to monitor indoor coil pipe
And compared with the indoor coil pipe stored in controller, if indoor coil pipe again below the second lower threshold, then
The second interrupt requests of secondary generation.
9. transducer air conditioning guard method according to claim 8, which is characterized in that first interrupt requests it is preferential
Grade is higher than second interrupt requests, and the period 1 is 2 minutes, and the length of first detection cycle is 5 minutes, and second
Cycle length is 3 minutes, and the first lower threshold is -1 DEG C, and the second lower threshold is 0 DEG C, and the first upper limit threshold is 5 DEG C, on second
Limiting threshold value is 0 DEG C, and third upper limit threshold is 1 DEG C.
10. a kind of transducer air conditioning, which is characterized in that application transducer air conditioning as described in any one of claim 1 to 9 is protected
Method.
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| CN108224703A (en) * | 2017-12-25 | 2018-06-29 | 青岛海尔空调电子有限公司 | The control method of air-conditioning |
| CN108131799A (en) * | 2018-02-14 | 2018-06-08 | 青岛海尔空调器有限总公司 | For the automatically cleaning control method of air conditioner |
| CN109405187B (en) * | 2018-06-21 | 2021-05-28 | 杭州先途电子有限公司 | Control method and variable frequency controller |
| CN109812939B (en) * | 2019-03-29 | 2020-10-23 | 四川虹美智能科技有限公司 | Variable frequency air conditioner protection control method and device |
| CN111780361B (en) * | 2020-06-30 | 2021-12-03 | 海信（山东）空调有限公司 | Air conditioner |
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