CN106839331A - Air conditioner high-temperature pressure control method and air conditioner - Google Patents
Air conditioner high-temperature pressure control method and air conditioner Download PDFInfo
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- CN106839331A CN106839331A CN201710127337.2A CN201710127337A CN106839331A CN 106839331 A CN106839331 A CN 106839331A CN 201710127337 A CN201710127337 A CN 201710127337A CN 106839331 A CN106839331 A CN 106839331A
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- outdoor unit
- air
- conditioner
- pressure switch
- switching signal
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008859 change Effects 0.000 claims abstract description 18
- 238000005457 optimization Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 8
- 206010020852 Hypertonia Diseases 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- 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
Landscapes
- 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 high-temperature pressure control method of an air conditioner and the air conditioner.A pressure switch is arranged in a compressor exhaust pipe, the mode of judging whether a switching signal changes or not is realized by acquiring the switching signal output by the pressure switch, when the switching signal changes, whether the change of the switching signal lasts for a first set time or not is judged, and if so, the outdoor unit of the air conditioner is controlled to stop running; and then, when the pressure switch signal changes again, judging whether the time of the change of the switch signal lasts for a second set time and meets the first stop set time for stopping the operation of the outdoor unit, and if so, controlling to restart the operation of the outdoor unit. Therefore, when the air conditioner runs at a high temperature, the outdoor unit is controlled to stop or start based on the action generated by the pressure switch, the air conditioner can be protected at the high temperature, the overload running of the air conditioner at the high temperature is avoided, and the reliability and the service life of the air conditioner are improved.
Description
Technical field
The invention belongs to air-conditioner technical field, specifically, be related to a kind of air-conditioner high temperature pressure control method and
Air-conditioner.
Background technology
Detachable air conditioner is divided into three kinds according to climate type：T1, T2 and T3, the ring that the air-conditioner of these three types is used
Border temperature is different, and wherein T3 types are applied to High Temperature Gas dog, are particularly suited for Middle East torrid areas.
According to the air-conditioner standard requirement of Middle East locality, refrigeration machine needs to use R410A environmental protection refrigerants, and efficiency significantly to carry
It is high.The outdoor environment temperature of T3 type air-conditioner refrigerating operatons is 18 DEG C -54 DEG C, and warming with global climate, Middle East
Maximum temperature already exceed 54 DEG C, or even some areas are already higher than 60 DEG C.Under such high-temperature condition, using R410A systems
After cryogen, air-conditioning system pressure will be very high, and because the efficiency of T3 type air-conditioners is significantly lifted, evaporator used and cold
The heat exchange area of condenser will increase, thus can build-up of pressure while raise delivery temperature and electric current rise slow, such feelings
Under condition, after system pressure is higher than the maximum pressure 4.8Mpa that compressor is allowed, delivery temperature and current value are likely to result in all
The condition for meeting compressor protector action will not be risen to, causes compressor not enter into guard mode.
It can be seen that, in the case of permissible value of the system pressure far above compressor, if air-conditioner continues to run at high temperature, meeting
Harmful effect is produced to air-conditioner quality and service life.
The content of the invention
This application provides a kind of air-conditioner high temperature pressure control method and air-conditioner, existing air-conditioner is solved at high temperature
Because hypertonia can produce dysgenic technical problem to air-conditioner during operation.
In order to solve the above technical problems, the application is achieved using following technical scheme：
A kind of air-conditioner high temperature pressure control method is proposed, including：Obtain the switching signal of pressure switch output；Opened described in judging
Whether OFF signal changes；If so, judging whether the change that the switching signal occurs continues the first setting time；If so,
Control the outdoor unit of air-conditioner out of service；Wherein, the pressure switch is placed in the compressor exhaust pipe of the air-conditioner.
Propose a kind of air-conditioner, including outdoor unit；Also include pressure switch, pressure switch output signal acquisition module, pressure
Power switch output signal judge module and outdoor unit control module；The pressure switch is placed in the compressor air-discharging of the air-conditioner
In pipe, for detecting the pressure in the compressor exhaust pipe, and the pressure output switching signal based on detection；The pressure is opened
Output signal acquisition module is closed, the switching signal for obtaining the pressure switch output, and it is defeated to send the pressure switch to
Go out signal judge module；The pressure switch output signal judge module, for judging whether the switching signal changes,
If so, judging whether the change that the switching signal occurs continues the first setting time；If so, the outdoor unit control module,
For controlling the outdoor unit out of service.
Compared with prior art, the advantage and good effect of the application are：The air-conditioner high temperature pressure control that the application is proposed
In method processed and air-conditioner, pressure switch is installed in compressor exhaust pipe, in pressure switch detection compressor exhaust pipe
Pressure, and the pressure output switching signal based on detection, generally when pressure is more than or less than a pressure threshold, pressure is opened
Generation action and output switching signal are closed, for example, when air-conditioner pressure over-pressure force threshold under hot operation, pressure switch
Generation is acted, and the switching signal of its output can produce change, and when pressure is by too high recovery to pressure threshold, pressure is opened
Pass can produce opposite action, and the switching signal of its output can produce change again, based on this, detect opening for pressure switch output
When OFF signal shows hypertonia, based on the comparing with the first setting time, set more than first in the duration of hypertonia
After fixing time, control outdoor unit is out of service, and indoor set normal work, to realize protecting outdoor unit not surpass under the high temperature conditions
Load operation, realizes the technique effect of lifting air conditioner reliability and service life.
After the detailed description of the application implementation method is read in conjunction with the figure, other features and advantage of the application will become more
Plus it is clear.
Brief description of the drawings
Fig. 1 is the flow chart of the air-conditioner high temperature pressure control method that the application is proposed；
Fig. 2 is the system architecture diagram of the air-conditioner that the application is proposed.
Specific embodiment
The specific embodiment to the application is described in more detail below in conjunction with the accompanying drawings.
The air-conditioner high temperature pressure control method that the application is proposed, as shown in figure 1, comprising the following steps：
Air-conditioner high temperature pressure control method, it is characterised in that including：
Step S11：Obtain the switching signal of pressure switch output.
Pressure switch is arranged in compressor exhaust pipe, can be open type, or closed type；Pressure switch is detected
Pressure in compressor exhaust pipe, when the pressure of detection is higher than the pressure threshold for setting, pressure switch generation action, and export
Switching signal.For example, when the pressure for detecting is less than pressure threshold, the switching signal of output is a low level signal, and
After the pressure for detecting is higher than pressure threshold, pressure switch is acted and exports a high level signal；Or, what is detected
When pressure is less than pressure threshold, the switching signal of output is a high level signal, and when the pressure for detecting is higher than pressure threshold
After value, pressure switch is acted and exports low level signal etc.；It is dynamic in generation that the embodiment of the present application does not limit pressure switch
The signal form of output switching signal after work, can show that the pressure for detecting is changed based on pressure threshold.
Step S12：Judge whether switching signal changes.
As described in step S11, air-conditioner in the process of running, when the switching signal of pressure switch exporting change, is then said
The pressure in compressor exhaust pipe that bright pressure switch is detected alreadys exceed pressure threshold, shows that system pressure is too high, maintains
Operation can produce harmful effect to air-conditioner.Now,
Step S13：Judge whether the change that switching signal occurs continues the first setting time.
Whether hypertonia duration is judged more than the first setting time, such as 10 seconds, if so, then, step
S14：Control the outdoor unit of air-conditioner out of service.
After high pressure run time is more than the first setting time, control outdoor unit is out of service, and indoor set can be normal
Work, under ensureing HTHP power state, to implement to protect to air-conditioner, it is to avoid cause to reduce quality to air-conditioner and use the longevity
The harmful effect of life.
After the outdoor unit of control air-conditioner is out of service, condition feelings can met by certain condition criterion
Under condition, restarting outdoor unit runs to ensure refrigeration.Specifically,
Step S15：Continue to obtain the switching signal that pressure switch is exported；Step S16：Judge whether switching signal changes；
If so, step S17：Judge whether the change that switching signal occurs continues the second setting time；If so, step S18：Judge outdoor
Whether the machine time out of service meets the first shutdown setting time；If so, step S19：Control outdoor unit startup optimization.
So that pressure switch is in the switching signal for exporting high level after the pressure for detecting exceedes pressure threshold as an example, work as outdoor
After machine is controlled to stop operation because of hypertonia under high temperature, pressure switch continues to detect the pressure in compressor exhaust pipe,
Because outdoor unit is out of service, system pressure starts to reduce, after pressure threshold is decreased below, pressure switch generation action,
Low level switching signal is exported, after the switching signal continues the second setting time, such as 6 seconds, then outdoor is determined whether
The machine time out of service meets 3 minutes, if it is not satisfied, to realize the effective protection to air-conditioner, now, even if pressure is
Drop to below pressure threshold, outdoor unit operation is not started yet, be only less than the pressure threshold time of at least 6 seconds, note in pressure
Recall outdoor unit stoppage protection meet 3 minutes two conditions all meet after, again control outdoor unit start, with tie up
Hold refrigeration.
In the case where superhigh temperature continues not drop, even if control outdoor unit restarting operation after the pressure reduction,
The condition for being risen to again due to pressure and meeting and stop outdoor unit operation is also there is, it is empty now based on step S11 to step S19
Adjusting the outdoor unit of device out of service and startup optimization situation can repeatedly occurs, if toggle frequency is too high, on the one hand illustrate air-conditioning
Device local environment temperature is too high, and air-conditioner operating pressure is excessive, is on the other hand likely to explanation air-conditioner and breaks down, now,
Need control outdoor unit thoroughly out of service to protect the air-conditioner will not to damage.Specifically, needs are judged in the 3rd setting time
Interior, whether outdoor unit number of times out of service and startup optimization is above set point number；If so, control outdoor unit is out of service,
Outdoor unit startup optimization is controlled again up to outdoor unit power down and after re-powering；Or, after the 4th setting time, controlling outdoor unit
Startup optimization.
For example, judge in 30 minutes, if outdoor unit is out of service and startup optimization number of times is above 4 times,
Control outdoor unit is out of service, until startup optimization after electric on next air-conditioner, or, outdoor unit out of service 15 is controlled by force
Restart operation after minute.
Above-mentioned, after outdoor unit is out of service, the indoor set of air-conditioner can inquire about DTC simultaneously from control chip
Shown on the display module of machine indoors, the state of air-conditioner is known for user or attendant, and DTC can be several
Word can also be letter, can distinguish air-conditioning whether the concrete reason of failure and failure etc..
Based on air-conditioner high temperature pressure control method set forth above, the application also proposes a kind of air-conditioner, such as Fig. 2 institutes
Show, including outdoor unit 21 and indoor set 22；Also include that pressure switch 23, pressure switch output signal acquisition module 24, pressure are opened
Close output signal judge module 25 and outdoor unit control module 26；Pressure switch 23 is placed in the compressor exhaust pipe of air-conditioner,
For detecting the pressure in compressor exhaust pipe, and the pressure output switching signal based on detection；Pressure switch output signal is obtained
Modulus block 24, for obtaining the switching signal of pressure switch output, and sends pressure switch output signal judge module to；Pressure
Switch output signal judge module 25 is used to judge whether switching signal changes, if so, judging the change that switching signal occurs
Whether change continues the first setting time；If so, outdoor unit control module 26 is used to control outdoor unit out of service.
After outdoor unit control module control outdoor unit is out of service, pressure switch output signal acquisition module 24 is also used
In the switching signal for obtaining pressure switch output；Whether pressure switch output signal judge module 25 is additionally operable to judge switching signal
Change, if so, judging whether the change that switching signal occurs continues the second setting time；If so, judging that outdoor unit stops
Whether the time of operation meets the first shutdown setting time；If so, outdoor unit control module 26 is additionally operable to control outdoor unit starting
Operation.
Changing air-conditioner also includes outdoor unit running status judge module 27；Outdoor unit running status judge module 27 is used for
After outdoor unit control module control outdoor unit startup optimization, judge in the 3rd setting time, outdoor unit is out of service and opens
Whether the number of times of dynamic operation is above set point number；If so, outdoor unit control module 26 is additionally operable to control outdoor unit out of service,
Until detecting outdoor unit power down and controlling outdoor unit startup optimization again after re-powering；Or after the 4th setting time, control
Outdoor unit startup optimization.
Indoor set 22 includes DTC enquiry module 221 and display module 222；DTC enquiry module 221 is used in room
Inquiry DTC after outer machine is out of service；Display module 222 is used to show DTC.
The high temperature pressure control process of specific air-conditioner is described in detail in above-mentioned air-conditioner high temperature pressure control method,
It will not go into details herein.
In air-conditioner high temperature pressure control method and air-conditioner that above-mentioned the application is proposed, when air-conditioner in the case of a high temperature
During operation, the pressure switch detecting system pressure in compressor exhaust pipe, when pressure is higher or lower than pressure threshold, pressure
Power switch generation action, based on the action that pressure switch is produced, controls the stopping or startup of outdoor unit, so as to play HTHP
Under protection to air-conditioner, it is to avoid air-conditioner overload operation at high temperature, improve reliability and the life-span of air-conditioner.
It should be noted that described above is not limitation of the present invention, the present invention is also not limited to the example above,
Change, remodeling, addition or replacement that those skilled in the art are made in essential scope of the invention, also should
Belong to protection scope of the present invention.
Claims (8)
1. air-conditioner high temperature pressure control method, it is characterised in that including：
Obtain the switching signal of pressure switch output；
Judge whether the switching signal changes；If so,
Judge whether the change that the switching signal occurs continues the first setting time；If so,
Control the outdoor unit of air-conditioner out of service；
Wherein, the pressure switch is placed in the compressor exhaust pipe of the air-conditioner.
2. air-conditioner high temperature pressure control method according to claim 1, it is characterised in that in the outdoor of control air-conditioner
After machine is out of service, methods described also includes：
Obtain the switching signal of the pressure switch output；
Judge whether the switching signal changes；If so,
Judge whether the change that the switching signal occurs continues the second setting time；If so,
Judge whether the outdoor unit time out of service meets the first shutdown setting time；If so,
Control the outdoor unit startup optimization.
3. air-conditioner high temperature pressure control method according to claim 2, it is characterised in that opened the outdoor unit is controlled
After dynamic operation, methods described also includes：
Judge in the 3rd setting time, whether outdoor unit number of times out of service and startup optimization above sets secondary
Number；If so,
Control the outdoor unit out of service, until the outdoor unit power down and controlling after re-powering the outdoor unit to start again
Operation；Or,
After the 4th setting time, the outdoor unit startup optimization is controlled.
4. the air-conditioner high temperature pressure control method according to claim any one of 1-3, it is characterised in that in the outdoor
After machine is out of service, methods described also includes：
The indoor set inquiry DTC of the air-conditioner simultaneously shows.
5. a kind of air-conditioner, including outdoor unit；Characterized in that, also including that pressure switch, pressure switch output signal obtain mould
Block, pressure switch output signal judge module and outdoor unit control module；The pressure switch is placed in the compression of the air-conditioner
In machine blast pipe, for detecting the pressure in the compressor exhaust pipe, and the pressure output switching signal based on detection；
The pressure switch output signal acquisition module, for obtaining the switching signal of the pressure switch output, and sends to
The pressure switch output signal judge module；
The pressure switch output signal judge module, for judging whether the switching signal changes, if so, judging institute
Whether the change for stating switching signal generation continues the first setting time；If so,
The outdoor unit control module, for controlling the outdoor unit out of service.
6. air-conditioner according to claim 5, it is characterised in that control the outdoor unit in the outdoor unit control module
After out of service,
The pressure switch output signal acquisition module, is additionally operable to obtain the switching signal of the pressure switch output；
The pressure switch output signal judge module, is additionally operable to judge whether the switching signal changes, if so, judging
Whether the change that the switching signal occurs continues the second setting time；If so, judging the outdoor unit time out of service
Whether first shutdown setting time is met；If so,
The outdoor unit control module, is additionally operable to control the outdoor unit startup optimization.
7. air-conditioner according to claim 6, it is characterised in that the air-conditioner also judges including outdoor unit running status
Module；
The outdoor unit running status judge module, for controlling the outdoor unit startup optimization in the outdoor unit control module
Afterwards, judge in the 3rd setting time, whether outdoor unit number of times out of service and startup optimization above sets secondary
Number；If so,
The outdoor unit control module, is additionally operable to control the outdoor unit out of service, until detecting the outdoor unit power down
And the outdoor unit startup optimization is controlled after re-powering again；Or after the 4th setting time, control the outdoor unit to start fortune
OK.
8. the air-conditioner according to claim any one of 5-7, it is characterised in that the air-conditioner also includes indoor set, institute
Stating indoor set includes DTC enquiry module and display module；
The DTC enquiry module, for inquiring about DTC after the outdoor unit is out of service；
The display module, for showing the DTC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710127337.2A CN106839331A (en) | 2017-03-06 | 2017-03-06 | Air conditioner high-temperature pressure control method and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710127337.2A CN106839331A (en) | 2017-03-06 | 2017-03-06 | Air conditioner high-temperature pressure control method and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106839331A true CN106839331A (en) | 2017-06-13 |
Family
ID=59137990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710127337.2A Pending CN106839331A (en) | 2017-03-06 | 2017-03-06 | Air conditioner high-temperature pressure control method and air conditioner |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357378A (en) * | 2018-10-19 | 2019-02-19 | 青岛海尔空调器有限总公司 | The method, apparatus and computer storage medium of airconditioning control |
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Application publication date: 20170613 |