CN106766000A - Convertible frequency air-conditioner fire prevention control method and control system - Google Patents
Convertible frequency air-conditioner fire prevention control method and control system Download PDFInfo
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- CN106766000A CN106766000A CN201710055999.3A CN201710055999A CN106766000A CN 106766000 A CN106766000 A CN 106766000A CN 201710055999 A CN201710055999 A CN 201710055999A CN 106766000 A CN106766000 A CN 106766000A
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
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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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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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- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of convertible frequency air-conditioner fire prevention control method and control system, methods described includes：During operation of air conditioner, obtain in real time the temperature of air conditioner power source plug inside obtained as current power supply temperature, in real time air-conditioning temperature indoors as current indoor environment temperature；The temperature difference between the current power supply temperature and the current indoor environment temperature is obtained as the current temperature difference, the current temperature difference is made comparisons with given threshold；If the current temperature difference is not less than the first given threshold, control air-conditioning is shut down；If less than first given threshold but not less than the second given threshold, the operating current to compressor of air conditioner is adjusted the current temperature difference so that the current temperature difference is less than first given threshold.Using the present invention, the accuracy and reliability of fire prevention control can be improved on the basis of air-conditioner temperature regulation comfortableness is taken into account.
Description
Technical field
It is to be related to convertible frequency air-conditioner fire prevention control method and control specifically the invention belongs to air conditioner controlling technology field
System.
Background technology
Air-conditioning as the larger equipment of operating current in home appliance, its work running in, often in the presence of because
For electric current is excessive or the reason such as electric leakage causes circuit structure temperature too high and generates heat, fire incident can occur when serious, burn sky
Part is adjusted, the damage of product is caused, and also there is larger potential safety hazard.
In order to reduce the generation of air-conditioning fire incident, prior art is provided with temperature protection in air-conditioning, and implementation is
Temperature sensor is set in air-conditioning electric control box, the temperature of electric-controlled box is detected using temperature sensor.When the temperature mistake of electric-controlled box
Gao Shi, cuts off the working power of air-conditioning, and control air-conditioning is directly shut down.
Using the above-mentioned technical proposal of the setting temperature protection in air-conditioning, air-conditioning can be controlled when control box temperature is too high
Shut down, reduce the generation of air-conditioning fire incident.But, in actual applications, the change of temperature can be delayed in air-conditioner control box
It is located inside air-conditioning in the change of the power network current powered for air-conditioning, and control box, its temperature is vulnerable to interior during operation of air conditioner
Portion's heat exchange temperature influences and causes detection inaccurate.On the other hand, air-conditioning is controlled directly to stop when the temperature of electric-controlled box is too high
Machine, control device is single, does not account for because the outer high factor of of short duration liter of the caused electric-controlled box temperature of interference, and control is empty
Straightening connects shutdown will cause indoor temperature to adjust comfortableness decline.
The content of the invention
It is an object of the invention to provide a kind of convertible frequency air-conditioner fire prevention control method and control system, adjusted air-conditioner temperature is taken into account
The accuracy and reliability of fire prevention control are improved on the basis of section comfortableness.
For achieving the above object, the method that the present invention is provided is achieved using following technical proposals：
A kind of convertible frequency air-conditioner fire prevention control method, methods described includes：
During operation of air conditioner, the temperature of air conditioner power source plug inside is obtained in real time and obtains empty as current power supply temperature, in real time
Adjust temperature indoors as current indoor environment temperature；
The temperature difference between the current power supply temperature and the current indoor environment temperature is obtained as the current temperature difference, described will be worked as
The preceding temperature difference is made comparisons with given threshold；
If the current temperature difference is not less than the first given threshold, control air-conditioning is shut down；
If the current temperature difference is less than first given threshold but not less than the second given threshold, to the work of compressor of air conditioner
It is adjusted as electric current so that the current temperature difference is less than first given threshold.
Preferably, the operating current to compressor of air conditioner is adjusted so that the current temperature difference is less than described the
One given threshold, specifically includes：
The current working current of compressor is obtained, the current working current is reduced and is obtained real work electric current；
Run according to the real work current control compressor of air conditioner.
Method as described above, during being run according to the real work current control compressor of air conditioner, continues
The temperature difference between the current power supply temperature and the current indoor environment temperature is obtained as the current temperature difference, by the current temperature
Difference is made comparisons with the preceding temperature difference for once obtaining；The preceding temperature difference for once obtaining is previous power supply temperature and previous indoor ring
The temperature difference between the temperature of border；
If the current temperature difference continues according to the real work current control air-conditioning pressure less than the preceding temperature difference for once obtaining
Contracting machine runs；
If the current temperature difference is not less than the preceding temperature difference for once obtaining, again by the current temperature difference and the described first setting
Threshold value and second given threshold are made comparisons, and the control of air-conditioning is performed according to comparative result.
Preferably, the current working current for obtaining compressor, reduces the current working current and obtains real work
Electric current, specifically includes：
The current working current of compressor is obtained, real work electric current is obtained according to the following equation：
Real work electric current=a* current working currents-b；
Wherein, coefficient a is no more than 1 positive number, and b is more than 0.
Method as described above, is at least not less than first given threshold and the current temperature difference in the current temperature difference
During less than first given threshold but not less than second given threshold, air-conditioning output alarm signal and/or prompting are controlled
The cue of the current power supply temperature.
To realize aforementioned invention purpose, the system that the present invention is provided is realized using following technical proposals：
A kind of convertible frequency air-conditioner anti-fire control system, including convertible frequency air-conditioner and air conditioner power source plug to be controlled, the system are also wrapped
Include：
Power supply temperature detection unit, for obtaining the temperature of the air conditioner power source plug inside as current power supply temperature；
Indoor environment temperature detection unit, for obtain air-conditioning temperature indoors as current indoor environment temperature；
Temperature difference acquiring unit, for obtaining the temperature difference conduct between the current power supply temperature and the current indoor environment temperature
The current temperature difference；
Temperature difference comparing unit, at least for the current temperature difference to be compared with given threshold, and exports comparative result；
Conditioning control unit, for the comparative result in the temperature difference comparing unit for the current temperature difference sets not less than first
Air-conditioning is controlled to shut down during threshold value, it is right in the current temperature difference less than first given threshold but not less than the second given threshold
The operating current of compressor of air conditioner is adjusted so that the current temperature difference is less than first given threshold.
System as described above, the conditioning control unit is adjusted to the operating current of compressor of air conditioner so that institute
The current temperature difference is stated less than first given threshold, is specifically included：
The current working current of compressor is obtained, the current working current is reduced and is obtained real work electric current；
Run according to the real work current control compressor of air conditioner.
System as described above, transports in the conditioning control unit according to the real work current control compressor of air conditioner
In capable process, the temperature difference acquiring unit continues to obtain between the current power supply temperature and the current indoor environment temperature
The temperature difference as the current temperature difference, the temperature difference comparing unit is additionally operable to make to compare by the current temperature difference and the preceding temperature difference that once obtains
Compared with, and export comparative result；The preceding temperature difference for once obtaining be previous power supply temperature and previous indoor environment temperature it
Between the temperature difference；
The conditioning control unit is additionally operable to the comparative result in temperature difference comparing unit output for the current temperature difference is less than
During the temperature difference once obtained before described, continue to be run according to the real work current control compressor of air conditioner；And described
When the comparative result of temperature difference comparing unit output is the current temperature difference not less than the temperature difference once obtained before described, again by institute
State the current temperature difference to be made comparisons with first given threshold and second given threshold, the control of air-conditioning is performed according to comparative result
System.
System as described above, the current working current of the acquisition compressor reduces the current working current and obtains
Real work electric current, specifically includes：
The current working current of compressor is obtained, real work electric current is obtained according to the following equation：
Real work electric current=a* current working currents-b；
Wherein, coefficient a is no more than 1 positive number, and b is more than 0.
System as described above, the system also includes：
Alarm signal and/or cue output unit, at least setting threshold not less than described first in the current temperature difference
Value and the current temperature difference less than first given threshold but during not less than second given threshold, control air-conditioning output
The cue of alarm signal and/or the prompting current power supply temperature.
Compared with prior art, advantages and positive effects of the present invention are：Convertible frequency air-conditioner fire prevention control proposed by the present invention
In method and control system, the power supply temperature of air conditioner power source plug inside is detected, according between power supply temperature and environment temperature
The size of the temperature difference performs different controls to air-conditioning, when the temperature difference is more than the first given threshold, shows that power supply temperature is too high, reaches
Shutdown temperature, then control air-conditioning directly to shut down, it is to avoid air-conditioning works on and produces Fire Overheat accident；In the temperature difference not less than the
Two given thresholds but during less than the first given threshold, show that power supply temperature is higher, now, empty but without shutdown temperature is reached
Tune is not shut down and is worked on, however, it is desirable to be adjusted to the operating current of compressor of air conditioner so that power supply temperature is in shuts down
Under temperature, power supply temperature is avoided while air-conditioning continues and adjusts indoor temperature, guarantee indoor temperature regulation comfortableness as far as possible
Spend high and firing accident occurs, prevention in advance and control that realization is caught fire to high temperature.And, the air conditioner power source based on detection is inserted
The temperature difference between power supply temperature and environment temperature inside head is used as judging parameter, on the one hand, the temperature of air conditioner power source plug inside
Degree directly, rapidly follows the change of the power network current powered for air-conditioning, is only disturbed by environment temperature；On the other hand, and
Influence of the environment temperature to power supply temperature can be excluded, thus, judge that parameter is more reliable, stable, accurate.Thus, using this hair
Bright control method and control system, can improve the accurate of fire prevention control on the basis of air-conditioner temperature regulation comfortableness is taken into account
Property and reliability.
After specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Brief description of the drawings
Fig. 1 is the flow chart based on convertible frequency air-conditioner of the present invention fire prevention control method one embodiment；
Fig. 2 is the flow chart based on another embodiment of convertible frequency air-conditioner of the present invention fire prevention control method；
Fig. 3 is the structural representation based on convertible frequency air-conditioner anti-fire control system one embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to drawings and Examples,
The present invention is described in further detail.
Fig. 1 is referred to, the figure show the flow chart of control method one embodiment of being prevented fires based on convertible frequency air-conditioner of the present invention.
As schematically shown in Figure 1, the embodiment realizes the method for convertible frequency air-conditioner fire prevention control using the process with following step
To realize：
Step 101：During operation of air conditioner, the temperature of air conditioner power source plug inside is obtained in real time as current power supply temperature, it is real
When obtain air-conditioning temperature indoors as current indoor environment temperature.
Current power supply temperature refers to the real time temperature of the air conditioner power source plug inside constantly obtained according to setting sample frequency,
What is reflected is the temperature of air-conditioning feeder ear, can be realized by setting temperature detection part in air conditioner power source plug inside.
In air-conditioning start running, acquired current power supply temperature reflects the operating temperature of air-conditioning feeder ear, the temperature be with
Change with the change of the power network current namely air-conditioning work electric current powered for air-conditioning, electric current is bigger, and temperature is higher.Also, by
In the current power supply temperature be the temperature of air conditioner power source plug inside, it is distant with air conditioner main body, air conditioner main body will not be subject to
The influence of internal temperature.
During operation of air conditioner, also obtain in real time air-conditioning temperature indoors as current indoor environment temperature, instead
Reflect be air-conditioning real-time indoor environment temperature indoors.The detection means of indoor environment temperature can using prior art come
Realize, be not specifically addressed herein and limit.
Step 102：The temperature difference between current power supply temperature and current indoor environment temperature is obtained as the current temperature difference, ought
The preceding temperature difference is made comparisons with given threshold.
In air-conditioning work running, current power supply temperature can be higher than current indoor environment temperature.Also, current power supply
Temperature also suffers from the influence of indoor environment temperature in addition to related to supply current size.General, indoor environment temperature
Higher, power supply temperature also can be higher；Vice versa.The influence in view of environment temperature on power supply temperature, in this step, meter
The temperature difference between current power supply temperature and current indoor environment temperature is calculated, as the current temperature difference, and using the current temperature difference as entering
The judgement parameter of row fire prevention control, makes comparisons with given threshold, and makees corresponding control to air-conditioning according to comparative result.
Wherein, given threshold refers to temperature given threshold, is temperature value that is known, pre-setting, and can be by awarding
Weigh and changed.Given threshold can be a threshold value or multiple threshold values, and in this embodiment, given threshold includes two,
Respectively the first given threshold and the second given threshold, the first given threshold are more than the second given threshold.First given threshold is
The maximum temperature threshold value that air-conditioning can be remained on, is also a temperature threshold for being easy to produce fire；Second setting threshold
But value is air-conditioning can be run in the presence of a temperature threshold for producing fire hazard.
Step 103：If the current temperature difference is not less than the first given threshold, control air-conditioning is shut down；If the current temperature difference is less than first
Given threshold but not less than the second given threshold, the operating current to compressor of air conditioner is adjusted so that the current temperature difference is less than
First given threshold.
The step is according to the control corresponding to air-conditioning work with the comparative result of given threshold of the current temperature difference in step 102
Process.Specifically, if the current temperature difference is not less than the first given threshold, show under current indoor environment temperature, it is current to supply
Electro-temperature is too high, reaches the max-thresholds of fire prevention control, namely reaches shutdown temperature, control air-conditioning is directly shut down, it is to avoid empty
Tune continue to run with and so that power supply temperature further raise and produce fire incident.Although if the current temperature difference is less than the first setting
Threshold value, not less than the second given threshold, although show current power supply temperature also be not up to shutdown temperature, but temperature
It is higher, if not making further regulation and control, it is likely that can cause that power supply temperature is further raised and reaches shutdown temperature yet.For
Such case, it is contemplated that the use of the purpose of air-conditioning is regulation indoor temperature, obtains more comfortable environment, in this case, air-conditioning
Do not shut down and work on, however, it is desirable to the operating current of compressor of air conditioner is adjusted, and the target of adjustment is so that currently
The temperature difference is less than the first given threshold.That is, using the current temperature difference less than the first given threshold as control targe, to compressor operating
Electric current is adjusted.Compressor operating curent change, air conditioner load change, power supply temperature can also be followed and changed, so as to pass through
Adjustment to compressor operating electric current reaches adjustment target of the current temperature difference not less than the first given threshold.
Fig. 2 is referred to, the figure show the flow based on another embodiment of convertible frequency air-conditioner of the present invention fire prevention control method
Figure.
As schematically shown in Figure 2, the embodiment realizes the method for convertible frequency air-conditioner fire prevention control using the process with following step
To realize：
Step 201：During operation of air conditioner, the temperature of air conditioner power source plug inside is obtained in real time as current power supply temperature, it is real
When obtain air-conditioning temperature indoors as current indoor environment temperature.
Step 202：The temperature difference between current power supply temperature and current indoor environment temperature is obtained as the current temperature difference, ought
The preceding temperature difference is made comparisons with given threshold.
The process that implements of above-mentioned two step refers to the description that Fig. 1 embodiments correspond to step, does not repeat herein.
Step 203：Whether the current temperature difference is less than the first given threshold.If so, performing step 205；If it is not, performing step
204。
Similar with Fig. 1 embodiments, in Fig. 2 embodiments, given threshold also includes the first given threshold and second
Given threshold, the implication of the two given thresholds and effect are similar with Fig. 1 embodiments.In the step 203, step 202 is judged
Whether the current temperature difference for obtaining is less than the first given threshold, and performs step 204 or step 205 according to judged result.
Step 204：Control air-conditioning is shut down.
If step 203 judges that the current temperature difference, not less than the first given threshold, shows under current indoor environment temperature, when
Preceding power supply temperature is too high, reaches the max-thresholds of fire prevention control, namely reaches shutdown temperature, and control air-conditioning is directly shut down, and keeps away
Exempt from air-conditioning continue to run with and so that power supply temperature further raise and produce fire incident.
Step 205：Whether the current temperature difference is less than the second given threshold.If so, performing step 206；Otherwise, step is gone to
207。
If step 203 judges the current temperature difference less than the first given threshold, determine whether the current temperature difference whether less than the
Two given thresholds, and step 206 or step 207 are performed according to judged result.
Step 206：Not mineral wool control.
If step 205 judges the current temperature difference less than the second given threshold, show that current power supply temperature is normal, be not in
Fire risk.In the case, to air-conditioning not mineral wool control, but air-conditioning work is controlled according to normal control process.
Step 207：The current working current of compressor is obtained, current working current is reduced and is obtained real work electric current, pressed
According to the facts border operating current control compressor of air conditioner operation.
If step 205 judges the current temperature difference not less than the second given threshold, although showing that current power supply temperature does not reach also
To shutdown temperature, but temperature is also higher, if not making further regulation and control, it is likely that can also cause that power supply temperature further rises
It is high and reach shutdown temperature.In this case, air-conditioning is not shut down and is worked on, however, it is desirable to the work to compressor of air conditioner
Electric current is adjusted.Also, the target being adjusted to operating current is still so that the current temperature difference is less than the first given threshold.Tool
It is the current working current for obtaining compressor for body, then, reduces current working current and obtain real work electric current, according to
Real work current control compressor of air conditioner runs.
As the presently preferred embodiments, the current working current of compressor is obtained, current working current is reduced and is obtained real work
Electric current, specifically includes：
The current working current of compressor is obtained, real work electric current is obtained according to the following equation：
Real work electric current=a* current working currents-b；
Wherein, coefficient a is no more than 1 positive number, and b is more than 0.
Preferably, the span of coefficient a is 0.9-0.98；B is less than 1.5.
Step 208：Whether the current temperature difference is less than a preceding temperature difference.If so, performing step 209；If it is not, step 205 is gone to,
The current temperature difference is made comparisons with the second given threshold again.
Real work electric current, control compressor of air conditioner after step 207 is reduced run according to real work electric current
During, continue to obtain the temperature difference between current power supply temperature and current indoor environment temperature as the current temperature difference.Then, will
The current temperature difference is made comparisons with the preceding temperature difference for once obtaining, and performs step 209 or step 205 according to comparative result selection.Wherein,
The preceding temperature difference that once obtains refers to the temperature difference between previous power supply temperature and previous indoor environment temperature.
If the comparative result of the current temperature difference and a preceding temperature difference is not less than a preceding temperature difference for the current temperature difference, show in drop
After low compressor operating current, power supply temperature does not decline, then go to step 205, and continuation sets the current temperature difference with second
Determine threshold value to make comparisons.If the current temperature difference continues executing with step 207, it is necessary to reduce again still not less than the second given threshold
Compressor real work electric current, until compressor operating electric current is reduced to zero and stops.
Step 209：Keep real work electric current constant.
If step 208 judges that the current temperature difference, less than a preceding temperature difference, shows after compressor operating electric current is reduced, supply
Electro-temperature has declined, then keep the real work electric current corresponding to the current temperature difference constant, no longer reduces compressor real work
Electric current.
However, it is to be understood that during step 206 not mineral wool control air-conditioning and step 209 keeps real
During the operating current invariance control air-conditioning of border, it is still desirable to according to the setting current power supply temperature of sample frequency acquisition and currently
Indoor environment temperature, and both current temperature difference are obtained, then, continue executing with the place that the current temperature difference is made comparisons with given threshold
Reason process.
In other embodiments, at least set less than first not less than the first given threshold and the current temperature difference in the current temperature difference
Threshold value but during not less than the second given threshold, control air-conditioning output alarm signal and/or points out the prompting letter of current power supply temperature
Number.For example, control air-conditioning output characterizes the current temperature difference or the too high or higher alarm signal of current power supply temperature, and by acousto-optic
Warning device sends sound and light alarm；Or, control air-conditioning the output current temperature difference or current power supply temperature and current indoor environment
The cue of temperature, and shown by display screen, pointed out with to current power supply temperature.
The control of convertible frequency air-conditioner is realized using the method for above-mentioned Fig. 1 embodiments or Fig. 2 embodiments, air conditioner power source plug is detected
Internal power supply temperature, the size according to the temperature difference between power supply temperature and environment temperature performs different controls to air-conditioning,
When the temperature difference is more than the first given threshold, show that power supply temperature is too high, reach shutdown temperature, then control air-conditioning directly to shut down, it is to avoid
Air-conditioning works on and produces Fire Overheat accident；In the temperature difference not less than the second given threshold but during less than the first given threshold,
Show that power supply temperature is higher, but without shutdown temperature is reached, now, air-conditioning is not shut down and worked on, however, it is desirable to air-conditioning
The operating current of compressor is adjusted so that power supply temperature be in shutdown temperature under, air-conditioning continue adjust indoor temperature,
Ensure to avoid power supply temperature too high and firing accident occurs while indoor temperature regulation comfortableness as far as possible, high temperature in realization
The prevention in advance and control of fire.And, between the power supply temperature and environment temperature of the air conditioner power source plug inside based on detection
The temperature difference is used as judging parameter, on the one hand, the temperature of air conditioner power source plug inside directly, rapidly follows the power network powered for air-conditioning
The change of electric current, is only disturbed by environment temperature；On the other hand, influence of the environment temperature to power supply temperature can be excluded again,
Thus, judge that parameter is more reliable, stable, accurate.Thus, using control method of the invention and control system, can take into account
The accuracy and reliability of fire prevention control are improved on the basis of air-conditioner temperature regulation comfortableness.
Fig. 3 is referred to, the figure show the structure based on convertible frequency air-conditioner anti-fire control system one embodiment of the present invention and shows
It is intended to.
As schematically shown in Figure 3, the convertible frequency air-conditioner anti-fire control system of the embodiment is except including empty as frequency conversion to be controlled
Outside the air conditioner power source plug 32 of tune 31 and the convertible frequency air-conditioner 31, included other structures unit, the work(of each construction unit
Energy and relation each other are as follows：
Indoor environment temperature detection unit 33, for obtain air-conditioning temperature indoors as current indoor environment temperature
Power supply temperature detection unit 34, for obtaining the temperature inside air conditioner power source plug 32 as current power supply temperature.
Temperature difference acquiring unit 35, current power supply temperature and indoor environment for obtaining the acquisition of power supply temperature detection unit 34
The temperature difference between the current indoor environment temperature that temperature detecting unit 33 is obtained is used as the current temperature difference.
Temperature difference comparing unit 36, at least current temperature difference and known given threshold for temperature difference acquiring unit 35 to be obtained
Compare, and export comparative result.
Conditioning control unit 37, for the comparative result in temperature difference comparing unit 36 for the current temperature difference sets not less than first
During threshold value, control convertible frequency air-conditioner 31 is shut down, and the comparative result in temperature difference comparing unit 36 sets for the current temperature difference is less than first
Threshold value but during not less than the second given threshold, the operating current to the compressor of convertible frequency air-conditioner 31 is adjusted so that current temperature
Difference is less than the first given threshold.
Each construction unit in the embodiment control system runs corresponding software program, implements according to Fig. 1 or Fig. 2 methods
The process work of example, realizes the fire prevention control to convertible frequency air-conditioner 31, reaches the technique effect achieved by preceding method.
In other embodiments, convertible frequency air-conditioner anti-fire control system can also include that alarm signal and/or cue are defeated
Go out unit, at least in the current temperature difference not less than the first given threshold and the current temperature difference less than the first given threshold but not small
When the second given threshold, the cue of control air-conditioning output alarm signal and/or the current power supply temperature of prompting.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to foregoing reality
Example is applied to be described in detail the present invention, for the person of ordinary skill of the art, still can be to foregoing implementation
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these are changed or replace
Change, do not make the spirit and scope of the essence disengaging claimed technical solution of the invention of appropriate technical solution.
Claims (10)
1. a kind of convertible frequency air-conditioner fire prevention control method, it is characterised in that methods described includes：
During operation of air conditioner, the temperature of air conditioner power source plug inside is obtained in real time and obtains empty as current power supply temperature, in real time
Adjust temperature indoors as current indoor environment temperature；
The temperature difference between the current power supply temperature and the current indoor environment temperature is obtained as the current temperature difference, described will be worked as
The preceding temperature difference is made comparisons with given threshold；
If the current temperature difference is not less than the first given threshold, control air-conditioning is shut down；
If the current temperature difference is less than first given threshold but not less than the second given threshold, to the work of compressor of air conditioner
It is adjusted as electric current so that the current temperature difference is less than first given threshold.
2. method according to claim 1, it is characterised in that the operating current to compressor of air conditioner is adjusted,
So that the current temperature difference is less than first given threshold, specifically include：
The current working current of compressor is obtained, the current working current is reduced and is obtained real work electric current；
Run according to the real work current control compressor of air conditioner.
3. method according to claim 2, it is characterised in that according to the real work current control compressor of air conditioner
During operation, continue to obtain the temperature difference between the current power supply temperature and the current indoor environment temperature as current
The temperature difference, the current temperature difference is made comparisons with the preceding temperature difference for once obtaining；The preceding temperature difference for once obtaining is previous power supply temperature
The temperature difference between degree and previous indoor environment temperature；
If the current temperature difference continues according to the real work current control air-conditioning pressure less than the preceding temperature difference for once obtaining
Contracting machine runs；
If the current temperature difference is not less than the preceding temperature difference for once obtaining, again by the current temperature difference and the described first setting
Threshold value and second given threshold are made comparisons, and the control of air-conditioning is performed according to comparative result.
4. method according to claim 2, it is characterised in that the current working current of the acquisition compressor, reduces institute
State current working current and obtain real work electric current, specifically include：
The current working current of compressor is obtained, real work electric current is obtained according to the following equation：
Real work electric current=a* current working currents-b；
Wherein, coefficient a is no more than 1 positive number, and b is more than 0.
5. method according to any one of claim 1 to 4, it is characterised in that be at least not less than in the current temperature difference
First given threshold and the current temperature difference are less than first given threshold but not less than second given threshold
When, the cue of control air-conditioning output alarm signal and/or the prompting current power supply temperature.
6. a kind of convertible frequency air-conditioner anti-fire control system, including convertible frequency air-conditioner and air conditioner power source plug to be controlled, it is characterised in that
The system also includes：
Power supply temperature detection unit, for obtaining the temperature of the air conditioner power source plug inside as current power supply temperature；
Indoor environment temperature detection unit, for obtain air-conditioning temperature indoors as current indoor environment temperature；
Temperature difference acquiring unit, for obtaining the temperature difference conduct between the current power supply temperature and the current indoor environment temperature
The current temperature difference；
Temperature difference comparing unit, at least for the current temperature difference to be compared with given threshold, and exports comparative result；
Conditioning control unit, for the comparative result in the temperature difference comparing unit for the current temperature difference sets not less than first
Air-conditioning is controlled to shut down during threshold value, it is right in the current temperature difference less than first given threshold but not less than the second given threshold
The operating current of compressor of air conditioner is adjusted so that the current temperature difference is less than first given threshold.
7. system according to claim 6, it is characterised in that work electricity of the conditioning control unit to compressor of air conditioner
Stream is adjusted so that the current temperature difference is less than first given threshold, specifically includes：
The current working current of compressor is obtained, the current working current is reduced and is obtained real work electric current；
Run according to the real work current control compressor of air conditioner.
8. system according to claim 7, it is characterised in that in the conditioning control unit according to real work electricity
During flow control compressor of air conditioner runs, the temperature difference acquiring unit continues the acquisition current power supply temperature and works as with described
The temperature difference between preceding indoor environment temperature as the current temperature difference, the temperature difference comparing unit be additionally operable to by the current temperature difference with it is preceding
The temperature difference for once obtaining is made comparisons, and exports comparative result；The preceding temperature difference for once obtaining be previous power supply temperature with it is previous
The temperature difference between secondary indoor environment temperature；
The conditioning control unit is additionally operable to the comparative result in temperature difference comparing unit output for the current temperature difference is less than
During the temperature difference once obtained before described, continue to be run according to the real work current control compressor of air conditioner；And described
When the comparative result of temperature difference comparing unit output is the current temperature difference not less than the temperature difference once obtained before described, again by institute
State the current temperature difference to be made comparisons with first given threshold and second given threshold, the control of air-conditioning is performed according to comparative result
System.
9. system according to claim 7, it is characterised in that the current working current of the acquisition compressor, reduces institute
State current working current and obtain real work electric current, specifically include：
The current working current of compressor is obtained, real work electric current is obtained according to the following equation：
Real work electric current=a* current working currents-b；
Wherein, coefficient a is no more than 1 positive number, and b is more than 0.
10. the system according to any one of claim 6 to 9, it is characterised in that the system also includes：
Alarm signal and/or cue output unit, at least setting threshold not less than described first in the current temperature difference
Value and the current temperature difference less than first given threshold but during not less than second given threshold, control air-conditioning output
The cue of alarm signal and/or the prompting current power supply temperature.
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| CN201710055999.3A CN106766000A (en) | 2017-01-25 | 2017-01-25 | Convertible frequency air-conditioner fire prevention control method and control system |
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