CN105757908A - Air conditioner control method and device - Google Patents

Air conditioner control method and device Download PDF

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Publication number
CN105757908A
CN105757908A CN201610218324.1A CN201610218324A CN105757908A CN 105757908 A CN105757908 A CN 105757908A CN 201610218324 A CN201610218324 A CN 201610218324A CN 105757908 A CN105757908 A CN 105757908A
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China
Prior art keywords
compressor
current value
air
conditioner
preset time
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CN201610218324.1A
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Chinese (zh)
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CN105757908B (en
Inventor
谭锦辉
雷华翘
廖荣华
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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Priority to CN201610218324.1A priority Critical patent/CN105757908B/en
Publication of CN105757908A publication Critical patent/CN105757908A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers

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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 an air conditioner control method. The method comprises: when first timing time is reached after an air conditioner compressor is normally started, acquiring a current value of the compressor as an initial current value, and acquiring a current value of the compressor at every first preset time interval as an intermediate current value; according to the initial current value and the intermediate current values, determining whether a high-pressure switch connected with the compressor is disconnected or not; when the high-pressure switch is disconnected, controlling the compressor to stop running and enter a compressor protection state; after the compressor stops for a second preset time interval, controlling the compressor to restart. The invention also discloses an air conditioner control device. By adopting the air conditioner control method and device, the service life of the compressor can be prolonged.

Description

Air-conditioner control method and device
Technical field
The present invention relates to air-conditioner technical field, particularly relate to a kind of air-conditioner control method and device.
Background technology
At present, air-conditioner is widely used under various different weather conditions, and the interior space can be realized refrigeration or heat-production functions by it.When temperature is too high, refrigerant pipeline pressure in air-conditioner also can increase therewith, particularly when using cold-producing medium (such as the R410A) of some high pressure, system pressure in air-conditioner is up to 4.8-5Mpa, the life-span that compressor runs under such pressure can significantly shorten, therefore existing solution is one high-pressure switch of increase in air-conditioner, this high-pressure switch is connected with compressor, this high-pressure switch has pressure upper limit value and threshold pression value, when the pressure in air-conditioner reaches the pressure upper limit value of high-pressure switch, high-pressure switch will disconnect, cut off the power supply of compressor, compressor is allowed to quit work, when the pressure in air-conditioner drops to the threshold pression value of high-pressure switch, high-pressure switch can re-close, connect the power supply of compressor, compressor is allowed to restart；By the disconnection of high-pressure switch and Guan Bi so that compressor will not run in a high voltage state, thus compressor is played a protective role.
But, above-mentioned control mode is adopted to have the disadvantage that when the system pressure in air-conditioner reaches the pressure upper limit value of high-pressure switch, high-pressure switch cuts off the power supply of compressor, after compressor quits work, pressure in air-conditioner can decline rapidly, quickly (general 15-20 second) just reached the threshold pression value of high-pressure switch, and then connect the power supply of compressor, compressor will be again started up；Owing to compressor time from stopping to opening is comparatively short, system pressure in air-conditioner also lack of equilibrium, starts compressor in this state, and compressor has very big impact, compressor can be caused very big infringement by long-term so startup, causes that the service life of compressor reduces.
Foregoing is only used for assisting understanding technical scheme, does not represent and admits that foregoing is prior art.
Summary of the invention
Present invention is primarily targeted at a kind of air-conditioner control method of offer and device, it is intended to solving in prior art, air-conditioner starts compressor when system pressure lack of equilibrium, cause the technical problem that compressor service life is low.
For achieving the above object, the present invention provides a kind of air-conditioner control method, and described method includes:
When first timing time reaches after cooler compressor normally starts, obtain the current value of compressor as initial current value, and obtain the current value of compressor as intermediate current value every the first Preset Time；
According to described initial current value and intermediate current value, it is determined that whether the high-pressure switch being connected with compressor disconnects；
When described high-pressure switch disconnects, control compressor out of service, to enter compressor protection state；
After compressor stops the second Preset Time, control described compressor and restart.
Preferably, after compressor stops the second Preset Time, after controlling the step that described compressor restarts, described method also includes:
Statistics compressor enters the number of times of compressor protection state within each predetermined period time；
Judge that whether the number of times of statistics is more than or equal to default protection number of times threshold values；
When the number of times of statistics is more than or equal to default protection number of times threshold values, control air-conditioner out of service.
Preferably, after compressor stops the second Preset Time, before controlling the step that described compressor restarts, described method also includes:
Obtain the current operation mode of air-conditioner；
Current operation mode according to described air-conditioner determines the second Preset Time.
Preferably, described method also includes: at the number of times added up more than or equal to default protection number of times threshold values, while controlling the step that air-conditioner is out of service, send fault cues information.
Preferably, during the first Preset Time that the first timing time reaches after cooler compressor normally starts, obtain the current value of compressor as initial current value, and every the first Preset Time obtain the current value of compressor as the step of intermediate current value before, described method also includes:
After the 3rd Preset Time opened by compressor, obtain compressor current value in the 4th Preset Time；
According to described compressor current value in the 4th Preset Time and predetermined current threshold values, it is determined that whether described compressor normally starts.
Additionally, for achieving the above object, the present invention also provides for a kind of air conditioner controlling device, and described device includes:
First acquisition module, for, when the first timing time reaches after cooler compressor normally starts, obtaining the current value of compressor as initial current value, and obtain the current value of compressor as intermediate current value every the first Preset Time；
First determines module, for according to described initial current value and intermediate current value, it is determined that whether the high-pressure switch being connected with compressor disconnects；
Stop controlling module, for when described high-pressure switch disconnects, controlling compressor out of service, to enter compressor protection state；
Restart control module, for, after compressor stops the second Preset Time, controlling described compressor and restart.
Preferably, described device also includes:
Statistical module, enters the number of times of compressor protection state for adding up compressor within each predetermined period time；
Judge module, for judging that whether the number of times added up is more than or equal to default protection number of times threshold values；
Shutdown controls module, for when the number of times of statistics is more than or equal to default protection number of times threshold values, controlling air-conditioner out of service.
Preferably, described device also includes:
Second acquisition module, for obtaining the current operation mode of air-conditioner；
Second determines module, determines the second Preset Time for the current operation mode according to described air-conditioner.
Preferably, described device also includes:
Reminding module, for, while shutdown control module control air-conditioner is out of service, sending fault cues information.
Preferably, described device also includes:
3rd acquisition module, for, after the 3rd Preset Time opened by compressor, obtaining compressor current value in the 4th Preset Time；
3rd determines module, for according to described compressor current value in the 4th Preset Time and predetermined current threshold values, it is determined that whether described compressor normally starts.
The air-conditioner control method of the present invention and device, when after cooler compressor normally starts, the first timing time reaches the first Preset Time, obtain the current value of compressor as initial current value, and obtain the current value of compressor as intermediate current value every the first Preset Time；According to described initial current value and intermediate current value, it is determined that whether the high-pressure switch being connected with compressor disconnects；When described high-pressure switch disconnects, control compressor out of service, to enter compressor protection state；After compressor stops the second Preset Time, control described compressor and restart；Namely after compressor normally starts, current value according to this compressor determines whether high-pressure switch disconnects, and when this high-pressure switch disconnects, control compressor out of service, and after this compressor stops the second Preset Time, control this compressor and restart, can after the system pressure in air-conditioner reaches balance, it is again started up compressor, reduces the impact to compressor, improve the service life of compressor.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the first embodiment of air-conditioner control method of the present invention；
Fig. 2 is the schematic flow sheet of the second embodiment of air-conditioner control method of the present invention；
Fig. 3 is the schematic flow sheet of the 3rd embodiment of air-conditioner control method of the present invention；
Fig. 4 is the schematic flow sheet of the 4th embodiment of air-conditioner control method of the present invention；
Fig. 5 is the schematic flow sheet of the 5th embodiment of air-conditioner control method of the present invention；
Fig. 6 is the structural representation of the first embodiment of air conditioner controlling device of the present invention；
Fig. 7 is the structural representation of the second embodiment of air conditioner controlling device of the present invention；
Fig. 8 is the structural representation of the 3rd embodiment of air conditioner controlling device of the present invention；
Fig. 9 is the structural representation of the 4th embodiment of air conditioner controlling device of the present invention；
Figure 10 is the structural representation of the 5th embodiment of air conditioner controlling device of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
The present invention provides a kind of air-conditioner control method, is applied in air-conditioner, to prevent from starting compressor when the system pressure of air-conditioner is not up to balance, improves compressor service life.
Above-mentioned air-conditioner can include polytype, can include on-hook, cabinet-type air conditioner, ceiling machine, window machine, movable air conditioner, embedded type air conditioner by mounting means；Frequency changer and fixed frequency machine can be included by operation principle；Domestic air conditioning and business air conditioner can be included by using environment.
With reference to the schematic flow sheet of the first embodiment that Fig. 1, Fig. 1 are air-conditioner control method of the present invention, the method includes:
S10, when the first timing time reaches after cooler compressor normally starts, obtain the current value of compressor as initial current value, and obtain the current value of compressor as intermediate current value every the first Preset Time.
After cooler compressor normally starts, start timing, when the first timing time reaches, obtain the current value of compressor as initial current value, and obtain the current value of compressor as intermediate current value every the first Preset Time；Optionally, can passing through the current value of current transformer collect and process machine, this current transformer is connected between compressor and power supply.
This first timing time can be arranged as required to, and optionally, in one embodiment, this first timing time is 10 seconds；This first Preset Time can be arranged as required to, and optionally, in one embodiment, this first Preset Time is 5 seconds；When namely reaching 10 seconds after cooler compressor normally starts, obtain the current value of compressor as initial current value I0, and obtained the current value of compressor every 5 seconds as intermediate current value IX, i.e. this intermediate current value IXCan have multiple, such as intermediate current value respectively I1、I2、I3、I4, wherein, I1When expression reaches 10 seconds after cooler compressor normally starts, the current value of first compressor obtained for 5 seconds in interval, I2When expression reaches 10 seconds after cooler compressor normally starts, the current value of second compressor obtained for 5 seconds in interval, I3When expression reaches 10 seconds after cooler compressor normally starts, the current value of the 3rd compressor obtained for 5 seconds in interval, I4When expression reaches 10 seconds after cooler compressor normally starts, the current value of the 4th compressor obtained for 5 seconds in interval.
S20, according to this initial current value and intermediate current value, it is determined that whether the high-pressure switch being connected with compressor disconnects.
In this step, by poor to this intermediate current value and initial current value, obtain current differential, and judge that whether this current differential is more than or equal to default difference between current threshold values, when this current differential is more than or equal to default difference between current threshold values, it is determined that the high-pressure switch being connected with compressor disconnects.Concrete, according to the acquisition of intermediate current value order, successively by poor to intermediate current value and initial current value, obtain current differential, e.g., the intermediate current value obtained successively is I1、I2、I3、I4, then the current differential obtained is respectively as follows: I1-I0、I2-I0、I3-I0、I4-I0。
This difference between current threshold values can be arranged as required to, and e.g., in one embodiment, this difference between current threshold values is 4A.
S30, when this high-pressure switch disconnects, control compressor out of service, to enter compressor protection state.
When this high-pressure switch disconnects; it is believed that the pressure in air-conditioner is excessive, in this step, compressor is controlled out of service; to enter compressor protection state, indoor heat exchanger in air-conditioner, outdoor heat exchanger, indoor fan, outdoor fan etc. run according to former running status.
In this step, while control compressor is out of service, also can send pressure protection information; as shown pressure protection information in display unit; in one embodiment, this display unit is charactron, protects information at this numeral method pressure; such as display " P6 "; optionally, when this pressure protects information display duration to reach preset duration, cancel and show this pressure protection information; in one embodiment, this preset duration is 60 seconds.
S40, after compressor stops the second Preset Time, control this compressor and restart.
When compressor is out of service, starts timer and start the persistent period that recording compressed machine is out of service, and this persistent period and the second Preset Time are compared, after this persistent period reaches the second Preset Time, control this compressor and restart.Common, after this persistent period reaches the second Preset Time, the system pressure in air-conditioner has reached balance, is now again started up compressor, can reduce the impact to compressor, improves the service life of compressor.
This second Preset Time can be arranged as required to, concrete, and air-conditioner is under different working modes, second Preset Time of its correspondence is different, the mode of operation of air-conditioner includes refrigeration mode and heating mode, it is necessary to explanation, and this heating mode does not include defrosting mode.Common, the second Preset Time in a heating mode is more than the second Preset Time in cooling mode, and e.g., in a heating mode, this second Preset Time is 4 minutes, and in cooling mode, this second Preset Time is 3 minutes.
In the second Preset Time that this compressor is out of service; this high-pressure switch is likely to re-close already, but does not still control compressor and restart, only after this compressor stops the second Preset Time; just control this compressor to restart, so that this compressor to be protected.
Adopt above-described embodiment, when the first timing time reaches after cooler compressor normally starts, obtain the current value of compressor as initial current value, and obtain the current value of compressor as intermediate current value every the first Preset Time；According to this initial current value and intermediate current value, it is determined that whether the high-pressure switch being connected with compressor disconnects；When this high-pressure switch disconnects, control compressor out of service, to enter compressor protection state；After compressor stops the second Preset Time, control this compressor and restart；Namely after compressor normally starts, current value according to this compressor determines whether high-pressure switch disconnects, and when this high-pressure switch disconnects, control compressor out of service, and after this compressor stops the second Preset Time, control this compressor and restart, can after the system pressure in air-conditioner reaches balance, it is again started up compressor, reduces the impact to compressor, improve the service life of compressor.
Schematic flow sheet with reference to the second embodiment that Fig. 2, Fig. 2 are air-conditioner control method of the present invention.
Based on the first embodiment of above-mentioned air-conditioner control method, after the step s 40, the method also includes:
S50, statistics compressor enter the number of times of compressor protection state within each predetermined period time.
This predetermined period time can be arranged as required to, and in one embodiment, this predetermined period time is 1 hour.
In this step; start enumerator; statistics compressor enters the number of times of compressor protection state within each predetermined period time successively; as, within first predetermined period time, the number of times adding up this compressor entrance compressor protection state is n1, within second predetermined period time; the number of times adding up this compressor entrance compressor protection state is n2; within the 3rd predetermined period time, the number of times adding up this compressor entrance compressor protection state is n3, etc..
S60, judge statistics number of times whether more than or equal to default protection number of times threshold values.
This protection number of times threshold values can be arranged as required to, and in one embodiment, this protection number of times threshold values is 9.
In this step, it is judged that whether the number of times of statistics is more than or equal to default protection number of times threshold values, abnormal to determine air-conditioner whether severe stress, when the number of times of this statistics is more than or equal to default protection number of times threshold values, it is determined that this air-conditioner severe stress is abnormal.Concrete, successively the number of times of statistics is compared with this protection number of times threshold values preset, as long as the number of times of one of them statistics is more than or equal to default protection number of times threshold values, then can determine that air-conditioner severe stress is abnormal.
S70, when the number of times of statistics is more than or equal to default protection number of times threshold values, control air-conditioner out of service.
In this step, control air-conditioner out of service, shut down by air-conditioner complete machine, concrete, compressor, indoor heat exchanger, outdoor heat exchanger, indoor fan, outdoor fan etc. is all out of service.
Schematic flow sheet with reference to the 3rd embodiment that Fig. 3, Fig. 3 are air-conditioner control method of the present invention.
Based on first embodiment or second embodiment of above-mentioned air-conditioner control method, before step S40, the method also includes:
S80, obtain air-conditioner current operation mode.
The mode of operation of air-conditioner can be determined by reception from the mode selection command that remote controller sends, or determined the mode of operation of air-conditioner by reception from the mode selection command that indoor set sends.
S90, current operation mode according to this air-conditioner determine the second Preset Time.
Pre-set the mode of operation of air-conditioner and the mapping relations of the second Preset Time, in this step, current operation mode according to this air-conditioner, in the mode of operation of this air-conditioner with the mapping relations of the second Preset Time, finds the second Preset Time of correspondence.In one embodiment, the mapping relations of the mode of operation of this air-conditioner and the second Preset Time are as shown in Table 1.When the current operation mode of this air-conditioner is heating mode, by table one, the second Preset Time that can find correspondence is 4 minutes.
Table one:
The mode of operation of air-conditioner Second Preset Time
Heating mode 4 minutes
Refrigeration mode 3 minutes
Schematic flow sheet with reference to the 4th embodiment that Fig. 4, Fig. 4 are air-conditioner control method of the present invention.
Based on the second embodiment of above-mentioned air-conditioner control method, in step S70 simultaneously, the method also includes:
S100, send fault cues information.
In this step, send fault cues information, remind user's air-conditioner severe stress abnormal, as shown fault cues information by display unit, in one embodiment, this display unit is charactron, in this numeral method fault cues information, such as display " P6 ", optionally, fault cues information shows always until this air-conditioner receives the shutdown command that remote controller sends, namely when air-conditioner receives the shutdown command that remote controller sends, by this fault cues erasing of information, no longer show.
With reference to Fig. 5, Fig. 5 are air-conditioner control method of the present invention the without the schematic flow sheet of embodiment.
Based on first embodiment or second embodiment of above-mentioned air-conditioner control method, before step S10, the method also includes:
S110, open after the 3rd Preset Time at compressor, obtain compressor current value in the 4th Preset Time.
3rd Preset Time can be arranged as required to, and in one embodiment, the 3rd Preset Time is 5 seconds.
After compressor is opened (compressor is in normally-open or abnormal start-up), start timing, obtain clocking value；This clocking value and the 3rd Preset Time are compared, after this clocking value reaches the 3rd Preset Time, obtains compressor current value in the 4th Preset Time；Optionally, current transformer collect and process machine current value in the 4th Preset Time can be passed through.
4th Preset Time can be arranged as required to, and in one embodiment, the 4th Preset Time is 4 seconds.
Optionally, the step obtaining compressor current value in the 4th Preset Time is: obtain compressor current value in the 4th Preset Time according to preset sample frequency.This preset sample frequency can be arranged as required to, and if this preset sample frequency is 1 second/time, then when the 4th Preset Time is 4 seconds, getting compressor current value in 4 seconds has 4.
S120, according to this compressor current value in the 4th Preset Time and predetermined current threshold values, it is determined that whether this compressor normally starts.
This predetermined current threshold values can be arranged as required to, and in one embodiment, this predetermined current threshold values is 3A.
Optionally, when this compressor current value in the 4th Preset Time has multiple, each current value can be compared with predetermined current threshold values, when this each current value is all higher than or is equal to predetermined current threshold values, determine that this compressor normally starts, otherwise determine the improper startup of this compressor.
The present invention also provides for a kind of air conditioner controlling device.
With reference to the structural representation of the first embodiment that Fig. 6, Fig. 6 are air conditioner controlling device of the present invention, this device includes:
First acquisition module 10, for, when the first timing time reaches after cooler compressor normally starts, obtaining the current value of compressor as initial current value, and obtain the current value of compressor as intermediate current value every the first Preset Time；
First determines module 20, for according to this initial current value and intermediate current value, it is determined that whether the high-pressure switch being connected with compressor disconnects；
Stop controlling module 30, for when this high-pressure switch disconnects, controlling compressor out of service, to enter compressor protection state；
Restart control module 40, for, after compressor stops the second Preset Time, controlling this compressor and restart.
After cooler compressor normally starts, starting timing, when the first timing time reaches, this first acquisition module 10 obtains the current value of compressor as initial current value, and obtains the current value of compressor as intermediate current value every the first Preset Time；Optionally, this first acquisition module 10 can pass through the current value of current transformer collect and process machine, and this current transformer is connected between compressor and power supply.
This first timing time can be arranged as required to, and optionally, in one embodiment, this first timing time is 10 seconds；This first Preset Time can be arranged as required to, and optionally, in one embodiment, this first Preset Time is 5 seconds；When namely reaching 10 seconds after cooler compressor normally starts, this first acquisition module 10 obtains the current value of compressor as initial current value I0, and obtained the current value of compressor every 5 seconds as intermediate current value IX, i.e. this intermediate current value IXCan have multiple, such as intermediate current value respectively I1、I2、I3、I4, wherein, I1When expression reaches 10 seconds after cooler compressor normally starts, the current value of first compressor obtained for 5 seconds in interval, I2When expression reaches 10 seconds after cooler compressor normally starts, the current value of second compressor obtained for 5 seconds in interval, I3When expression reaches 10 seconds after cooler compressor normally starts, the current value of the 3rd compressor obtained for 5 seconds in interval, I4When expression reaches 10 seconds after cooler compressor normally starts, the current value of the 4th compressor obtained for 5 seconds in interval.
This first determines that module 20 is by poor to this intermediate current value and initial current value, obtain current differential, and judge that whether this current differential is more than or equal to default difference between current threshold values, when this current differential is more than or equal to default difference between current threshold values, it is determined that the high-pressure switch being connected with compressor disconnects.Concrete, this first determines the module 20 acquisition order according to intermediate current value, successively by poor to intermediate current value and initial current value, obtains current differential, and e.g., the intermediate current value obtained successively is I1、I2、I3、I4, then the current differential obtained is respectively as follows: I1-I0、I2-I0、I3-I0、I4-I0。
This difference between current threshold values can be arranged as required to, and e.g., in one embodiment, this difference between current threshold values is 4A.
When this high-pressure switch disconnects; it is believed that the pressure in air-conditioner is excessive; this stopping controls module 30, and to control compressor out of service, and to enter compressor protection state, indoor heat exchanger in air-conditioner, outdoor heat exchanger, indoor fan, outdoor fan etc. run according to former running status.
Stop controlling module 30 while control compressor is out of service; also can send pressure protection information, as shown pressure protection information in display unit, in one embodiment; this display unit is charactron; information is protected, as shown " P6 ", optionally at this numeral method pressure; when this pressure protects information display duration to reach preset duration; cancelling and show this pressure protection information, in one embodiment, this preset duration is 60 seconds.
When compressor is out of service, start timer and start the persistent period that recording compressed machine is out of service, and this persistent period and the second Preset Time are compared, after this persistent period reaches the second Preset Time, this restarts control module 40 and controls this compressor and restart.Common, after this persistent period reaches the second Preset Time, the system pressure in air-conditioner has reached balance, is now again started up compressor, can reduce the impact to compressor, improves the service life of compressor.
This second Preset Time can be arranged as required to, concrete, and air-conditioner is under different working modes, second Preset Time of its correspondence is different, the mode of operation of air-conditioner includes refrigeration mode and heating mode, it is necessary to explanation, and this heating mode does not include defrosting mode.Common, the second Preset Time in a heating mode is more than the second Preset Time in cooling mode, and e.g., in a heating mode, this second Preset Time is 4 minutes, and in cooling mode, this second Preset Time is 3 minutes.
In the second Preset Time that this compressor is out of service; this high-pressure switch is likely to re-close already; but restart control module 40 still not control compressor and restart; only after this compressor stops the second Preset Time; just control this compressor to restart, so that this compressor to be protected.
Structural representation with reference to the second embodiment that Fig. 7, Fig. 7 are air conditioner controlling device of the present invention.
Based on the first embodiment of above-mentioned air conditioner controlling device, this device also includes:
Statistical module 50, enters the number of times of compressor protection state for adding up compressor within each predetermined period time；
Judge module 60, for judging that whether the number of times added up is more than or equal to default protection number of times threshold values；
Shutdown controls module 70, for when the number of times of statistics is more than or equal to default protection number of times threshold values, controlling air-conditioner out of service.
This predetermined period time can be arranged as required to, and in one embodiment, this predetermined period time is 1 hour.
This statistical module 50 is by starting enumerator; statistics compressor enters the number of times of compressor protection state within each predetermined period time successively; as within first predetermined period time; the number of times adding up this compressor entrance compressor protection state is n1; within second predetermined period time, the number of times adding up this compressor entrance compressor protection state is n2, within the 3rd predetermined period time; the number of times adding up this compressor entrance compressor protection state is n3, etc..
This protection number of times threshold values can be arranged as required to, and in one embodiment, this protection number of times threshold values is 9.
This judge module 60 judges that whether the number of times of statistics is more than or equal to default protection number of times threshold values, abnormal to determine air-conditioner whether severe stress, when the number of times of this statistics is more than or equal to default protection number of times threshold values, it is determined that this air-conditioner severe stress is abnormal.Concrete, the number of times of statistics is compared by this judge module 60 successively with this protection number of times threshold values preset, as long as the number of times of one of them statistics is more than or equal to default protection number of times threshold values, then can determine that air-conditioner severe stress is abnormal.
Shutdown controls module 70 when the number of times that the judged result of this judge module 60 is statistics is more than or equal to default protection number of times threshold values; control air-conditioner out of service; shut down by air-conditioner complete machine; concrete, compressor, indoor heat exchanger, outdoor heat exchanger, indoor fan, outdoor fan etc. is all out of service.
Structural representation with reference to the 3rd embodiment that Fig. 8, Fig. 8 are air conditioner controlling device of the present invention.
Based on first embodiment or second embodiment of above-mentioned air conditioner controlling device, this device also includes:
Second acquisition module 80, for obtaining the current operation mode of air-conditioner；
Second determines module 90, determines the second Preset Time for the current operation mode according to this air-conditioner.
This second acquisition module 80 can determine the mode of operation of air-conditioner by reception from the mode selection command that remote controller sends, or determined the mode of operation of air-conditioner from the mode selection command that indoor set sends by reception.
Pre-set the mode of operation of air-conditioner and the mapping relations of the second Preset Time, this second determines the module 90 current operation mode according to this air-conditioner, in the mode of operation of this air-conditioner with the mapping relations of the second Preset Time, find the second Preset Time of correspondence.In one embodiment, the mode of operation of this air-conditioner and the mapping relations of the second Preset Time are such as shown in above-mentioned table one.When the current operation mode of this air-conditioner is heating mode, this second determines that module 90 is by table one, and the second Preset Time that can find correspondence is 4 minutes.
Structural representation with reference to the 4th embodiment that Fig. 9, Fig. 9 are air conditioner controlling device of the present invention.
Based on the second embodiment of above-mentioned air conditioner controlling device, this device also includes:
Reminding module 100, for shutdown control module 70 control air-conditioner out of service while, send fault cues information.
This reminding module 100 sends fault cues information, remind user's air-conditioner severe stress abnormal, as shown fault cues information by display unit, in one embodiment, this display unit is charactron, in this numeral method fault cues information, as shown " P6 ", optionally, fault cues information shows always until this air-conditioner receives the shutdown command that remote controller sends, namely, when air-conditioner receives the shutdown command that remote controller sends, by this fault cues erasing of information, no longer show.
Structural representation with reference to the 5th embodiment that Figure 10, Figure 10 are air conditioner controlling device of the present invention.
Based on first embodiment or second embodiment of above-mentioned air conditioner controlling device, this device also includes:
3rd acquisition module 110, for, after the 3rd Preset Time opened by compressor, obtaining compressor current value in the 4th Preset Time；
3rd determines module 120, for according to this compressor current value in the 4th Preset Time and predetermined current threshold values, it is determined that whether this compressor normally starts.
3rd Preset Time can be arranged as required to, and in one embodiment, the 3rd Preset Time is 5 seconds.
After compressor is opened (compressor is in normally-open or abnormal start-up), start timing, obtain clocking value；This clocking value and the 3rd Preset Time being compared, after this clocking value reaches the 3rd Preset Time, the 3rd acquisition module 110 obtains compressor current value in the 4th Preset Time；Optionally, the 3rd acquisition module 110 can pass through current transformer collect and process machine current value in the 4th Preset Time.
4th Preset Time can be arranged as required to, and in one embodiment, the 4th Preset Time is 4 seconds.
Optionally, the 3rd acquisition module 110 obtains compressor current value in the 4th Preset Time according to preset sample frequency.This preset sample frequency can be arranged as required to, and if this preset sample frequency is 1 second/time, then when the 4th Preset Time is 4 seconds, getting compressor current value in 4 seconds has 4.
This predetermined current threshold values can be arranged as required to, and in one embodiment, this predetermined current threshold values is 3A.
Optionally, when this compressor current value in the 4th Preset Time has multiple, 3rd determines that each current value and predetermined current threshold values can be compared by module 120, when this each current value is all higher than or is equal to predetermined current threshold values, determine that this compressor normally starts, otherwise determine the improper startup of this compressor.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention.

Claims (10)

1. an air-conditioner control method, it is characterised in that described method includes:
When first timing time reaches after cooler compressor normally starts, obtain the current value of compressor as initial current value, and obtain the current value of compressor as intermediate current value every the first Preset Time；
According to described initial current value and intermediate current value, it is determined that whether the high-pressure switch being connected with compressor disconnects；
When described high-pressure switch disconnects, control compressor out of service, to enter compressor protection state；
After compressor stops the second Preset Time, control described compressor and restart.
2. air-conditioner control method as claimed in claim 1, it is characterised in that after compressor stops the second Preset Time, after controlling the step that described compressor restarts, described method also includes:
Statistics compressor enters the number of times of compressor protection state within each predetermined period time；
Judge that whether the number of times of statistics is more than or equal to default protection number of times threshold values；
When the number of times of statistics is more than or equal to default protection number of times threshold values, control air-conditioner out of service.
3. air-conditioner control method as claimed in claim 1 or 2, it is characterised in that after compressor stops the second Preset Time, before controlling the step that described compressor restarts, described method also includes:
Obtain the current operation mode of air-conditioner；
Current operation mode according to described air-conditioner determines the second Preset Time.
4. air-conditioner control method as claimed in claim 2, it is characterised in that described method also includes: at the number of times added up more than or equal to default protection number of times threshold values, while controlling the step that air-conditioner is out of service, send fault cues information.
5. air-conditioner control method as claimed in claim 1 or 2, it is characterized in that, when after cooler compressor normally starts, the first timing time reaches, obtain the current value of compressor as initial current value, and every first Preset Time obtain compressor current value as the step of intermediate current value before, described method also includes:
After the 3rd Preset Time opened by compressor, obtain compressor current value in the 4th Preset Time；
According to described compressor current value in the 4th Preset Time and predetermined current threshold values, it is determined that whether described compressor normally starts.
6. an air conditioner controlling device, it is characterised in that described device includes:
First acquisition module, for, when the first timing time reaches after cooler compressor normally starts, obtaining the current value of compressor as initial current value, and obtain the current value of compressor as intermediate current value every the first Preset Time；
First determines module, for according to described initial current value and intermediate current value, it is determined that whether the high-pressure switch being connected with compressor disconnects；
Stop controlling module, for when described high-pressure switch disconnects, controlling compressor out of service, to enter compressor protection state；
Restart control module, for, after compressor stops the second Preset Time, controlling described compressor and restart.
7. air conditioner controlling device as claimed in claim 6, it is characterised in that described device also includes:
Statistical module, enters the number of times of compressor protection state for adding up compressor within each predetermined period time；
Judge module, for judging that whether the number of times added up is more than or equal to default protection number of times threshold values；
Shutdown controls module, for when the number of times of statistics is more than or equal to default protection number of times threshold values, controlling air-conditioner out of service.
8. air conditioner controlling device as claimed in claims 6 or 7, it is characterised in that described device also includes:
Second acquisition module, for obtaining the current operation mode of air-conditioner；
Second determines module, determines the second Preset Time for the current operation mode according to described air-conditioner.
9. air conditioner controlling device as claimed in claim 7, it is characterised in that described device also includes:
Reminding module, for, while shutdown control module control air-conditioner is out of service, sending fault cues information.
10. air conditioner controlling device as claimed in claims 6 or 7, it is characterised in that described device also includes:
3rd acquisition module, for, after the 3rd Preset Time opened by compressor, obtaining compressor current value in the 4th Preset Time；
3rd determines module, for according to described compressor current value in the 4th Preset Time and predetermined current threshold values, it is determined that whether described compressor normally starts.
CN201610218324.1A 2016-04-08 2016-04-08 Air-conditioner control method and device Active CN105757908B (en)

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CN114322240A (en) * 2022-01-04 2022-04-12 广东美的制冷设备有限公司 Air conditioner control method and device and air conditioner

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