CN104566763A - Control method for air-conditioning system, control device and air-conditioning system - Google Patents
Control method for air-conditioning system, control device and air-conditioning system Download PDFInfo
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- CN104566763A CN104566763A CN201310477157.9A CN201310477157A CN104566763A CN 104566763 A CN104566763 A CN 104566763A CN 201310477157 A CN201310477157 A CN 201310477157A CN 104566763 A CN104566763 A CN 104566763A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 154
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000007613 environmental effect Effects 0.000 claims description 40
- 230000002159 abnormal effect Effects 0.000 claims description 32
- 230000001143 conditioned effect Effects 0.000 claims description 13
- 238000013481 data capture Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000002918 waste heat Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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
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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
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- 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
-
- 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
- F24F11/62—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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- 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 invention discloses a control method for an air-conditioning system. The control method comprises the following steps: starting up a compressor while meeting a preset condition; within a preset detecting time range, controlling the compressor to stop when the current environment temperature is within the preset temperature range and an operation current value of the air-conditioning system is not smaller than a set current value; controlling the compressor to stop when the current environment temperature exceeds the preset temperature range and the operation current value is not smaller than the set current value, and re-starting the compressor after the first time; then, controlling the compressor to stop when the operation current value is not smaller than the set current value and a pressure value of a gas exhaustion tube of the compressor exceeds a preset range. The control method for the air-conditioning system disclosed by the invention can be used for controlling the compressor to stop when the operation current of the air-conditioning system is overhigh due to faults, so that the compressor is no longer started before the faults are removed, the phenomenon of repeatedly starting and stopping the compressor is avoided, and the damage probability of the compressor is reduced. The invention further discloses an air-conditioning system and a control device thereof.
Description
Technical field
The invention belongs to Air-condition system control technical field, particularly relate to the control method of air-conditioning system, control device and air-conditioning system.
Background technology
Along with expanding economy, air-conditioning system application is more prevalent, and the reliable and stable running of air-conditioning system has influence on normally carrying out of productive life.
Existing air-conditioning system occur dirty stifled abnormal time; due to refrigeration or heat loop be obstructed and cause system height pressure reduction more and more higher; when height pressure reduction increases but voltage is constant; compressor power-off because of system power rising startup overload protection; air-conditioning system self-starting will be there is after a period of time; when not removing dirty stifled thing in time, compressor will enter overload protection again, so repeatedly.When the supply voltage of air-conditioning system is too low, the problem of compressor repeatedly starting and stopping also can be there is.
Above-mentioned compressor repeatedly starting and stopping makes compressor repeatedly run under high current status, and motor coil caloric value increases and occurs the situation that coil short burns, and the probability of damage of compressor raises.
Summary of the invention
In view of this, the object of the present invention is to provide the control method of air-conditioning system, control device and air-conditioning system, to prevent compressor repeatedly starting and stopping, reduce the probability of damage of compressor.
For achieving the above object, the invention provides following technical scheme:
The invention discloses a kind of control method of air-conditioning system, comprising:
When meeting pre-conditioned, open compressor;
Within default detection time:
Obtain current environmental temperature, compare preset temperature range and detect the current environmental temperature obtained;
When described current environmental temperature is positioned at described preset temperature range, obtain the running current value of described air-conditioning system, when the running current value of air-conditioning system is not less than current setting value, control described compressor shutdown;
When described current environmental temperature exceeds described preset temperature range, obtain the running current value of described air-conditioning system, when described running current value is not less than described current setting value, control described compressor shutdown, and after the very first time, control described compressor and again start; After again opening described compressor, if described running current value is not less than described current setting value, then obtain the force value of the blast pipe of described compressor, when the force value of the blast pipe of described compressor exceeds preset range, control described compressor shutdown.
Preferably, in the above-mentioned methods, the difference between the force value of the described pre-conditioned blast pipe for compressor and the force value of air inlet pipe is less than the first pressure threshold.
Preferably, in the above-mentioned methods, when described current environmental temperature is positioned at described preset temperature range, before the described compressor shutdown of control, also comprise:
Obtain the force value of the blast pipe of described compressor;
When described force value is not less than the second pressure threshold, determine that described air-conditioning system generating loop is abnormal;
When described force value is less than described second pressure threshold, determine described air-conditioning system generation abnormal electrical power supply.
Preferably, in the above-mentioned methods, when described current environmental temperature exceeds described preset temperature range, after again opening compressor, perform before controlling institute's compressor shutdown, also comprise:
When described force value is less than the 3rd pressure threshold, determine described air-conditioning system generation abnormal electrical power supply;
When described force value is greater than the 4th pressure threshold, determine that described air-conditioning system generating loop is abnormal.
Preferably, in the above-mentioned methods, the step controlling indoor set display Exception Type is also comprised.
Preferably, in the above-mentioned methods, when described force value is less than the 3rd pressure threshold, also comprise: control indoor set and shut down.
Preferably, in the above-mentioned methods, when air-conditioning system runs on heating mode, control indoor set shutdown and comprise: control described indoor set and shut down after having blown waste heat.
The invention also discloses a kind of control device of air-conditioning system, comprising:
First control unit, for when meeting pre-conditioned, opens compressor;
Temperature data acquisition unit, for obtaining current environmental temperature;
Current data acquiring unit, for obtaining the running current value of described air-conditioning system;
Comparing unit, for comparing preset temperature range and detecting the current environmental temperature obtained;
Second control unit, for being positioned at described preset temperature range in described current environmental temperature, and when the running current value of air-conditioning system is not less than current setting value, controls described compressor shutdown;
3rd control unit, for exceeding described preset temperature range in described current environmental temperature, and when the running current value of air-conditioning system is not less than current setting value, controls described compressor shutdown, and after the very first time, controls described compressor and again open;
Pressure at expulsion data capture unit, for obtaining the force value of the blast pipe of described compressor;
4th control unit, for after again opening described compressor, when the running current value of described air-conditioning system is not less than described current setting value, and when the force value of the blast pipe of described compressor exceeds preset range, controls described compressor shutdown.
Preferably, above-mentioned control device also comprises admission pressure data capture unit, and described admission pressure data capture unit is for obtaining the force value of the air inlet pipe of described compressor;
Described first control unit comprises the first processing module, when the described first processing module difference be used between the force value and the force value of air inlet pipe of the blast pipe of described compressor is less than the first pressure threshold, determines to meet and opens the pre-conditioned of compressor.
Preferably, above-mentioned control device also comprises Fisrt fault type determining units;
After described second control unit determines that the running current value of described air-conditioning system is not less than described current setting value; and before described second control unit controls described compressor shutdown; described Fisrt fault type determining units is when the force value of described blast pipe is not less than the second pressure threshold; determine that described air-conditioning system generating loop is abnormal; when the force value of described blast pipe is less than described second pressure threshold, determine described air-conditioning system generation abnormal electrical power supply.
Preferably, above-mentioned control device also comprises the second fault type determining unit;
Determine that the running current value of described air-conditioning system is not less than described current setting value at described 4th control unit; and before described 4th control unit controls described compressor shutdown; described second fault type determining unit is when the force value of described blast pipe is less than the 3rd pressure threshold; determine described air-conditioning system generation abnormal electrical power supply; when described force value is greater than the 4th pressure threshold, determine that described air-conditioning system generating loop is abnormal.
The invention also discloses a kind of air-conditioning system, comprise indoor set and off-premises station, described off-premises station comprises compressor and control device,
Described control device is above-mentioned any one control device disclosed;
Described air-conditioning system also comprise be arranged at described compressor blast pipe on the first pressure-detecting device, be arranged at the second pressure-detecting device in the air inlet pipe of described compressor, be arranged at outdoor temperature-detecting device, and for the current sensing means of the running current value that detects described air-conditioning system;
Described control device is connected with described first pressure-detecting device, the second pressure-detecting device, temperature-detecting device, current sensing means and compressor respectively.
As can be seen here, beneficial effect of the present invention is: the control method of air-conditioning system disclosed by the invention, when causing the running current of air-conditioning system excessive because of fault, control compressor shuts down, no longer compressor is opened before fixing a breakdown, avoid the phenomenon occurring compressor repeatedly starting and stopping, thus reduce the probability of damage of compressor.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the control method of a kind of air-conditioning system disclosed by the invention;
Fig. 2 is the flow chart of current environmental temperature disclosed by the invention control method of air-conditioning system when being in preset temperature range;
Fig. 3 is the flow chart of current environmental temperature disclosed by the invention control method of air-conditioning system when exceeding preset temperature range;
Fig. 4 is the structural representation of the control device of a kind of air-conditioning system disclosed by the invention;
Fig. 5 is the structural representation of the control device of another kind of air-conditioning system disclosed by the invention.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of control method of air-conditioning system, to prevent compressor repeatedly starting and stopping, reduce the probability of damage of compressor.
It is the flow chart of the control method of a kind of air-conditioning system disclosed by the invention see Fig. 1, Fig. 1.This control method comprises:
Step S11: when meeting pre-conditioned, opens compressor.
After air-conditioning system start runs, operation below performing in Preset Time.In enforcement, this Preset Time can be 5 minutes.Here it should be noted that, because the control method of air-conditioning system disclosed by the invention only performs in air-conditioning system starts shooting postrun Preset Time, therefore after timing reaches this Preset Time, whole control procedure will no longer be carried out.
Step S12: obtain current environmental temperature.
Detect current environmental temperature by being arranged at outdoor temperature-detecting device, this temperature-detecting device is connected with air-conditioning system simultaneously, and the control device of air-conditioning system can obtain current environmental temperature from temperature-detecting device.
Step S13: compare current environmental temperature and preset temperature range, when current environmental temperature is in preset temperature range, performs step S14, when current environmental temperature exceeds preset temperature range, performs step S16.
This preset temperature range both may be used for characterizing hot environment, also may be used for characterizing low temperature environment.This preset temperature range is the interval be made up of the second temperature and the first temperature.Wherein, the first temperature is higher than the second temperature, and the first temperature is for characterizing hot environment, and the second temperature is for characterizing low temperature environment, and this first temperature can be 30 DEG C, and the second temperature can be 10 DEG C, and the present invention does not limit.Can it is clear that, when environment temperature exceeds preset temperature range, may because heating demand or fall heat demand and occur peak of power consumption.
Step S14: the running current value obtaining air-conditioning system, when running current value is not less than current setting value, performs step S15.
Utilize current sensing means to detect the running current value of air-conditioning system, control device obtains the running current value of air-conditioning system from current sensing means.When current environmental temperature is in preset temperature range, illustrate that air-conditioning system is not in high-temperature area and low-temperature region.If the running current value of air-conditioning system exceedes current setting value, may be because supply voltage is lower, also may be because the loop of air-conditioning occurs dirty stifled, now will control compressor shutdown.
Step S15: control compressor shutdown.
Step S16: the running current value obtaining air-conditioning system, when running current value is not less than current setting value, controls compressor shutdown, after the very first time, controls compressor and again opens.
Step S17: after again opening compressor, obtains the running current value of air-conditioning system, if running current value is not less than current setting value, performs step S18.
Step S18: the force value obtaining the blast pipe of compressor.
Step S19: when the force value of blast pipe exceeds preset range, performs step S15.
The blast pipe of compressor is provided with the first pressure-detecting device.When current environmental temperature exceeds preset temperature range, illustrate that air-conditioning system is in high-temperature area or low-temperature region.If the running current value of air-conditioning system exceedes current setting value, just control compressor shutdown, wait for the very first time, if cause the too high fault of running current value to be excluded within the very first time, air-conditioning system continues to run.If after again starting compressor; still there is the problem that running current value is too high; judge that the force value of current exhaust pipe is whether in preset range; if the force value of blast pipe is beyond preset range; then control compressor shutdown; before failture evacuation, no longer open compressor, avoid occurring compressor repeatedly starting and stopping.
The control method of air-conditioning system disclosed by the invention, when causing because of fault the running current of air-conditioning system excessive, controlling compressor shutdown, before fixing a breakdown, no longer opening compressor, avoid the phenomenon occurring compressor repeatedly starting and stopping, thus reduce the probability of damage of compressor.
In enforcement, judge whether that opening the pre-conditioned of compressor can be: the difference between the force value of the blast pipe of compressor and the force value of air inlet pipe is less than the first pressure threshold.When air-conditioning system start runs, indoor set starts running, and high-voltage value when the first pressure-detecting device on the blast pipe of compressor records start is P
h, low voltage value when the second pressure-detecting device in the air inlet pipe of compressor records start is P
l, pressure reduction △ P=P
h-P
lif pressure reduction is more than or equal to the first pressure threshold, then judge that the loop of air-conditioning system is abnormal, may be have blocking or valve somewhere not to open to wait exception to cause flow of refrigerant not smooth, now not open compressor.If the system height pressure reduction (the difference namely force value of the blast pipe of compressor and the force value of air inlet pipe between) of air-conditioning system after shutting down last time is excessive, after air-conditioning system start runs, if directly open compressor, again overload protection can be there is.In the present invention, when the difference between the force value and the force value of air inlet pipe of the blast pipe of compressor is less than the first pressure threshold, just open compressor.
State in the control method of disclosed air-conditioning system on the invention, can judge to cause the running current of air-conditioning system to be more than or equal to the reason of current setting value further.Be described below in conjunction with Fig. 2 and Fig. 3.
See Fig. 2, Fig. 2 be current environmental temperature disclosed by the invention be in preset temperature range time air-conditioning system the flow chart of control method.This control method comprises:
Step S21: the running current value obtaining air-conditioning system.
Step S22: compare the running current value and current setting value that get, when running current value is less than current setting value, returns and performs step S21, otherwise, perform step S23.
Step S23: the force value obtaining the blast pipe of compressor.
Step S24: the force value and the second pressure threshold that compare the blast pipe got, when the force value of blast pipe is not less than the second pressure threshold, performs step S25, otherwise performs step S26.
Step S25: determine that air-conditioning system generating loop is abnormal, perform step S27.
Step S26: determine that abnormal electrical power supply appears in air-conditioning system, performs step S27.
Step S27: control compressor shutdown.
When current environmental temperature is in preset temperature range, if the running current value of air-conditioning system is more than or equal to current setting value, the force value of the blast pipe of current compressor will be detected further, if now the force value of blast pipe is greater than or equal to the second pressure threshold, determining that air-conditioning system there occurs loop abnormal, may be have blocking or valve somewhere not to open to wait exception to cause flow of refrigerant not smooth.If now the force value of blast pipe is less than the second pressure threshold, illustrate that the loop of air-conditioning system is normal, the reason causing running current excessive is that the supply voltage of air-conditioning system is lower, therefore determines air-conditioning system generation abnormal electrical power supply.
Preferably, after determining the Exception Type of air-conditioning system, can also arrange the step controlling indoor set display Exception Type, this step can perform before control compressor shutdown, also can carry out after control compressor shutdown.
See Fig. 3, Fig. 3 be current environmental temperature disclosed by the invention exceed preset temperature range time air-conditioning system the flow chart of control method.This control method comprises:
Step S31: the running current value obtaining air-conditioning system.
Step S32: compare the running current value and current setting value that get, when running current value is less than current setting value, returns and performs step S31, otherwise, perform step S33.
Step S33: control compressor shutdown, after the very first time, controls compressor and again opens.
After control compressor shutdown, wait for the very first time, again open compressor afterwards.The very first time in the present invention can be 1 minute.
Step S34: the running current value obtaining air-conditioning system.
Step S35: judge whether the running current of air-conditioning is not less than pre-set current value, if so, then performs step S36, otherwise, return and perform step S34.
After again opening compressor, current sensing means continues the running current value detecting air-conditioning system, control device obtains the running current value detected from current sensing means, if again there is the situation being more than or equal to current setting value in the running current value of air-conditioning system, and the force value of the blast pipe of compressor exceeds preset range, then determine the fault causing this problem, and need close compressor.
Step S36: the force value obtaining the blast pipe of compressor.
Step S37: the force value and the preset range that compare blast pipe, is less than the lower of this preset range in the force value of blast pipe and performs step S38 in limited time, be greater than the upper of this preset range and prescribe a time limit, perform step S39 in the force value of blast pipe.
This preset range is the interval be made up of the 3rd pressure threshold and the 4th pressure threshold, and wherein the 3rd pressure threshold is less than the 4th force value, and the 3rd pressure threshold is the lower limit of this preset range, and the 4th pressure threshold is the upper limit of this preset range.
Step S38: determine air-conditioning system generation abnormal electrical power supply, performs step S310.
Step S39: determine that air-conditioning system generating loop is abnormal, perform step S310.
Step S310: control compressor shutdown.
When current environmental temperature exceeds preset temperature range, if the running current value of air-conditioning system is more than or equal to current setting value, control compressor shutdown.After the wait very first time, control compressor again to open, after again opening compressor, if still occur that running current value is more than or equal to the situation of current setting value, the force value of the blast pipe of current compressor will be detected further, if now the force value of blast pipe is greater than the 4th pressure threshold, determine that air-conditioning system there occurs loop abnormal, control compressor shutdown, if now the force value of blast pipe is less than the 3rd pressure threshold, illustrate that the loop of air-conditioning system is normal, the reason causing running current excessive is that the supply voltage of air-conditioning system is lower, therefore air-conditioning system generation abnormal electrical power supply is determined, same control compressor shutdown.
Preferably, after determining the Exception Type of air-conditioning system, can also arrange the step controlling indoor set display Exception Type, this step can perform before control compressor shutdown, also can perform after control compressor shutdown.
In addition; when current environmental temperature exceeds preset temperature range; if the reason determining to cause the running current value of air-conditioning system to be more than or equal to current setting value is that supply voltage is lower; when namely determining that abnormal electrical power supply appears in air-conditioning system; except performing the operation of control compressor shutdown; can also control indoor set to shut down, certainly controlling step that indoor set shuts down can after control compressor shutdown, also can before control compressor shutdown.It should be noted that, when control method disclosed by the invention comprises the step of control indoor set display Exception Type, control operating in of indoor set shutdown and control to perform after indoor set shows Exception Type.
In addition, if air-conditioning system runs on heating mode, then control indoor set shutdown and comprise: control indoor set and shut down after having blown waste heat.
State in the control method of disclosed air-conditioning system on the invention, obtain the operation of the running current value of air-conditioning system, can carry out according to predetermined period.
The control method of the above disclosed air-conditioning system of the present invention, corresponding the present invention also discloses the control device of air-conditioning system, to realize this control method.This control device can be arranged in the off-premises station of air-conditioning system.
It is the structural representation of the control device of air-conditioning system disclosed by the invention see Fig. 4, Fig. 4.This control device comprises the first control unit 1, temperature data acquisition unit 2, current data acquiring unit 3, comparing unit 4, second control unit 5, the 3rd control unit 6, pressure at expulsion data capture unit 7 and the 4th control unit 8.
Wherein:
First control unit 1, for when meeting pre-conditioned, opens compressor.
Temperature data acquisition unit 2, for obtaining current environmental temperature.Temperature data control unit 2 obtains current environmental temperature from being arranged at outdoor temperature-detecting device.
Current data acquiring unit 3, for obtaining the running current value of air-conditioning system.Current data acquiring unit 3 obtains the running current value of air-conditioning system from current sensing means, and this current sensing means is for detecting the running current value of air-conditioning system.
Comparing unit 4, for comparing preset temperature range and detecting the current environmental temperature obtained.
Second control unit 5, for being positioned at preset temperature range in current environmental temperature, and when the running current value of air-conditioning system is not less than current setting value, controls compressor shutdown.
3rd control unit 6, for exceeding preset temperature range in current environmental temperature, and when the running current value of air-conditioning system is not less than current setting value, controls compressor shutdown, and after the very first time, controls compressor and again open.This very first time can be 1 minute.
Pressure at expulsion data capture unit 7, for obtaining the force value of the blast pipe of compressor.The blast pipe of the compressor of off-premises station is provided with the first pressure-detecting device, and pressure at expulsion data capture unit 7 obtains the force value of the blast pipe of compressor from this first pressure-detecting device.
4th control unit 8, for after again opening compressor, when the running current value of air-conditioning system is not less than current setting value, and when the force value of the blast pipe of compressor exceeds preset range, controls compressor shutdown.
The control device of air-conditioning system disclosed by the invention, when causing because of fault the running current of air-conditioning system excessive, controlling compressor shutdown, before fixing a breakdown, no longer opening compressor, avoid the phenomenon occurring compressor repeatedly starting and stopping, thus reduce the probability of damage of compressor.
In enforcement, judge whether that opening the pre-conditioned of compressor can be: the difference between the force value of the blast pipe of compressor and the force value of air inlet pipe is less than the first pressure threshold.The air inlet pipe of compressor is installed the second pressure-detecting device, is detected the force value of the air inlet pipe of compressor by the second pressure-detecting device.Accordingly, the control device of air-conditioning system also comprises admission pressure data capture unit, and admission pressure data capture unit is for obtaining the force value of the air inlet pipe of compressor.First control unit 1 also comprises the first processing module, when this first processing module difference be used between the force value and the force value of air inlet pipe of the blast pipe of compressor is less than the first pressure threshold, determines to meet and opens the pre-conditioned of compressor.
In enforcement, before control compressor shutdown, can also judge further to cause the running current of air-conditioning system to be more than or equal to the reason of current setting value.
It is the structural representation of the control device of another kind of air-conditioning system disclosed by the invention see Fig. 5, Fig. 5.This control device comprises the first control unit 1, temperature data acquisition unit 2, current data acquiring unit 3, comparing unit 4, second control unit 5, the 3rd control unit 6, pressure at expulsion data capture unit 7, the 4th control unit 8, Fisrt fault type determining units 9 and the second fault type determining unit 10.Only just be described with the difference of control device shown in Fig. 4 below.
After the second control unit 5 determines that the running current value of air-conditioning system is not less than current setting value; and before the second control unit 5 controls compressor shutdown; Fisrt fault type determining units 9 is when the force value of blast pipe is not less than the second pressure threshold; determine that air-conditioning system generating loop is abnormal; when the force value of blast pipe is less than the second pressure threshold, determine air-conditioning system generation abnormal electrical power supply.
Determine that the running current value of air-conditioning system is not less than current setting value at the 4th control unit 8; and before the 4th control unit 8 controls compressor shutdown; second fault type determining unit 10 is when the force value of blast pipe is less than the 3rd pressure threshold; determine air-conditioning system generation abnormal electrical power supply; when force value is greater than the 4th pressure threshold, determine that air-conditioning system generating loop is abnormal.
In addition, when the second fault type determining unit 10 is determined abnormal electrical power supply occurs, the 4th control unit 8, except control compressor shutdown, can also control indoor set and shut down.If air-conditioning system runs on heating mode, then the 4th control unit 8 control indoor set shut down be: control indoor set shut down after having blown waste heat.
The invention also discloses a kind of air-conditioning system, comprise indoor set and off-premises station, wherein, off-premises station comprises compressor and control device, and this control device is above-mentioned any one control device disclosed of the present invention, and, this air-conditioning system also comprises the first pressure-detecting device be arranged on the blast pipe of compressor, be arranged at the second pressure-detecting device in the air inlet pipe of compressor, be arranged at outdoor temperature-detecting device, and for the current sensing means of the running current value that detects air-conditioning system.Control device is connected with the first pressure-detecting device, the second pressure-detecting device, temperature-detecting device, current sensing means and compressor respectively.
Air-conditioning system disclosed by the invention, when causing the running current of air-conditioning system excessive because of fault, the control device in air-conditioning system controls compressor shutdown, before fixing a breakdown, no longer open compressor, avoid the phenomenon occurring compressor repeatedly starting and stopping, thus reduce the probability of damage of compressor.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Professional can also recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, read-only storage (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (12)
1. a control method for air-conditioning system, is characterized in that, comprising:
When meeting pre-conditioned, open compressor;
Within default detection time:
Obtain current environmental temperature, compare preset temperature range and detect the current environmental temperature obtained;
When described current environmental temperature is positioned at described preset temperature range, obtain the running current value of described air-conditioning system, when the running current value of air-conditioning system is not less than current setting value, control described compressor shutdown;
When described current environmental temperature exceeds described preset temperature range, obtain the running current value of described air-conditioning system, when described running current value is not less than described current setting value, control described compressor shutdown, and after the very first time, control described compressor and again start; After again opening described compressor, if described running current value is not less than described current setting value, then obtain the force value of the blast pipe of described compressor, when the force value of the blast pipe of described compressor exceeds preset range, control described compressor shutdown.
2. method according to claim 1, is characterized in that, the difference between the force value of the described pre-conditioned blast pipe for compressor and the force value of air inlet pipe is less than the first pressure threshold.
3. method according to claim 1, is characterized in that, when described current environmental temperature is positioned at described preset temperature range, before the described compressor shutdown of control, also comprises:
Obtain the force value of the blast pipe of described compressor;
When described force value is not less than the second pressure threshold, determine that described air-conditioning system generating loop is abnormal;
When described force value is less than described second pressure threshold, determine described air-conditioning system generation abnormal electrical power supply.
4. method according to claim 1, is characterized in that, when described current environmental temperature exceeds described preset temperature range, after again opening compressor, performs before controlling institute's compressor shutdown, also comprises:
When described force value is less than the 3rd pressure threshold, determine described air-conditioning system generation abnormal electrical power supply;
When described force value is greater than the 4th pressure threshold, determine that described air-conditioning system generating loop is abnormal.
5. the method according to claim 3 or 4, is characterized in that, also comprises the step controlling indoor set display Exception Type.
6. method according to claim 4, is characterized in that, when described force value is less than the 3rd pressure threshold, also comprises: control indoor set and shut down.
7. method according to claim 6, is characterized in that, when air-conditioning system runs on heating mode, controls indoor set shutdown and comprises: control described indoor set and shut down after having blown waste heat.
8. a control device for air-conditioning system, is characterized in that, comprising:
First control unit, for when meeting pre-conditioned, opens compressor;
Temperature data acquisition unit, for obtaining current environmental temperature;
Current data acquiring unit, for obtaining the running current value of described air-conditioning system;
Comparing unit, for comparing preset temperature range and detecting the current environmental temperature obtained;
Second control unit, for being positioned at described preset temperature range in described current environmental temperature, and when the running current value of air-conditioning system is not less than current setting value, controls described compressor shutdown;
3rd control unit, for exceeding described preset temperature range in described current environmental temperature, and when the running current value of air-conditioning system is not less than current setting value, controls described compressor shutdown, and after the very first time, controls described compressor and again open;
Pressure at expulsion data capture unit, for obtaining the force value of the blast pipe of described compressor;
4th control unit, for after again opening described compressor, when the running current value of described air-conditioning system is not less than described current setting value, and when the force value of the blast pipe of described compressor exceeds preset range, controls described compressor shutdown.
9. control device according to claim 8, is characterized in that, also comprises admission pressure data capture unit, and described admission pressure data capture unit is for obtaining the force value of the air inlet pipe of described compressor;
Described first control unit comprises the first processing module, when the described first processing module difference be used between the force value and the force value of air inlet pipe of the blast pipe of described compressor is less than the first pressure threshold, determines to meet and opens the pre-conditioned of compressor.
10. control device according to claim 8, is characterized in that, also comprises Fisrt fault type determining units;
After described second control unit determines that the running current value of described air-conditioning system is not less than described current setting value; and before described second control unit controls described compressor shutdown; described Fisrt fault type determining units is when the force value of described blast pipe is not less than the second pressure threshold; determine that described air-conditioning system generating loop is abnormal; when the force value of described blast pipe is less than described second pressure threshold, determine described air-conditioning system generation abnormal electrical power supply.
Control device described in 11. according to Claim 8,9 or 10, is characterized in that, also comprises the second fault type determining unit;
Determine that the running current value of described air-conditioning system is not less than described current setting value at described 4th control unit; and before described 4th control unit controls described compressor shutdown; described second fault type determining unit is when the force value of described blast pipe is less than the 3rd pressure threshold; determine described air-conditioning system generation abnormal electrical power supply; when described force value is greater than the 4th pressure threshold, determine that described air-conditioning system generating loop is abnormal.
12. 1 kinds of air-conditioning systems, comprise indoor set and off-premises station, and described off-premises station comprises compressor and control device, it is characterized in that:
The control device of described control device according to any one of claim 8 to 11;
Described air-conditioning system also comprise be arranged at described compressor blast pipe on the first pressure-detecting device, be arranged at the second pressure-detecting device in the air inlet pipe of described compressor, be arranged at outdoor temperature-detecting device, and for the current sensing means of the running current value that detects described air-conditioning system;
Described control device is connected with described first pressure-detecting device, the second pressure-detecting device, temperature-detecting device, current sensing means and compressor respectively.
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| CN201310477157.9A CN104566763B (en) | 2013-10-12 | 2013-10-12 | Control method, control device and the air-conditioning system of air-conditioning system |
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| CN201310477157.9A CN104566763B (en) | 2013-10-12 | 2013-10-12 | Control method, control device and the air-conditioning system of air-conditioning system |
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| CN105757908A (en) * | 2016-04-08 | 2016-07-13 | 广东美的制冷设备有限公司 | Air conditioner control method and device |
| CN106882007A (en) * | 2015-12-16 | 2017-06-23 | 杭州三花研究院有限公司 | A kind of air-conditioning system, control device and its control method |
| CN107144061A (en) * | 2017-06-20 | 2017-09-08 | 广东美的暖通设备有限公司 | Compressor cooling means, system and air-conditioning |
| CN108333981A (en) * | 2017-12-25 | 2018-07-27 | 珠海格力节能环保制冷技术研究中心有限公司 | The halt control method and device of compressor |
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| CN110332670A (en) * | 2019-07-16 | 2019-10-15 | 珠海格力电器股份有限公司 | Compressor control method and control device and coolant system |
| CN110595015A (en) * | 2019-09-25 | 2019-12-20 | 珠海格力电器股份有限公司 | Adjusting method and device of frequency conversion equipment |
| CN111076349A (en) * | 2019-12-24 | 2020-04-28 | 珠海格力电器股份有限公司 | Operation control method and device, storage medium and air conditioner |
| CN111076349B (en) * | 2019-12-24 | 2021-01-26 | 珠海格力电器股份有限公司 | Operation control method and device, storage medium and air conditioner |
| CN111637587A (en) * | 2020-05-28 | 2020-09-08 | 宁波奥克斯电气股份有限公司 | Control method and system for compressor overload protection and air conditioner |
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