CN103807987B - High-pressure prevention system and method for air conditioner - Google Patents
High-pressure prevention system and method for air conditioner Download PDFInfo
- Publication number
- CN103807987B CN103807987B CN201410083636.7A CN201410083636A CN103807987B CN 103807987 B CN103807987 B CN 103807987B CN 201410083636 A CN201410083636 A CN 201410083636A CN 103807987 B CN103807987 B CN 103807987B
- Authority
- CN
- China
- Prior art keywords
- pressure
- early warning
- warning signal
- pressure early
- stage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000002265 prevention Effects 0.000 title abstract 5
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000004378 air conditioning Methods 0.000 claims description 72
- 230000001603 reducing effect Effects 0.000 claims description 32
- 238000007689 inspection Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000005057 refrigeration Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 5
- 206010020852 Hypertonia Diseases 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002040 relaxant effect Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner high-pressure prevention system and a high-pressure prevention method, wherein the air conditioner high-pressure prevention system comprises: the pressure detection module comprises a plurality of pressure sensors with different pressure early warning values, so that when the exhaust pressure of the compressor exceeds the pressure early warning value of a certain pressure sensor, the pressure detection module can feed back a corresponding pressure early warning signal to the main controller, and the main controller executes a corresponding pressure reduction measure according to the pressure early warning signal. Therefore, the invention realizes the multi-stage high-pressure prevention control of the air conditioner by setting a plurality of pressure sensors with different pressure early warning values, effectively controls the phenomenon of over-pressure protection shutdown of the air conditioner caused by overload operation, namely greatly reduces the shutdown times of the air conditioner, thereby improving the refrigeration or heating effect of the air conditioner and further improving the comfort of the air conditioner.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, it relates to a kind of anti-high-pressure system of air-conditioning and anti-high pressure method.
Background technology
The compressor operating frequency of air-conditioning is higher, and the pressure of gas exhaust piping is bigger.The pressure being born due to gas exhaust piping
It is limited, therefore, will result in pipelines from bursting when pressure exceedes its limiting value, or even security incident occurs.
In order to prevent the too high danger causing of air-conditioning system pressure at expulsion, generally in outdoor machine of air-conditioner, one switch is installed
Type pressure sensor, so, when air-conditioning system running overload leads to pressure at expulsion too high, can make switching mode pressure sensing
The switching off of device, thus the protection realizing air-conditioning system is shut down.
But, above-mentioned measure is easily caused air-conditioning frequent shutdown, thus affecting refrigeration or the heating effect of air-conditioning.
Content of the invention
In view of this, the present invention provides a kind of anti-high-pressure system of air-conditioning and anti-high pressure method, to realize to air-conditioning because excessively negative
The effective control of phenomenon is shut down in the hypertonia protection that lotus runs and causes, and reduces the number of times that air-conditioning is shut down, and improves the system of air-conditioning
Cold or heating effect, and then improve the comfortableness of air-conditioning.
A kind of anti-high-pressure system of air-conditioning, comprising: compressor, condenser, evaporimeter, outdoor fan, pressure detecting module and
Master controller, wherein, described pressure detecting module includes the pressure sensor of multiple different pressures early warning values；
The outlet of described compressor is connected by gas exhaust piping with the entrance of described condenser, the outlet of described condenser with
The entrance of described evaporimeter connects, and the outlet of described evaporimeter is connected with the entrance of described compressor；
Described pressure detecting module is arranged on described gas exhaust piping, to detect the exhaust during described compressor operating
Pressure；
Described master controller is connected with described pressure detecting module, described compressor and described outdoor fan respectively, works as institute
State certain pressure sensor in pressure detecting module and the pressure early warning that described pressure at expulsion exceeds described pressure sensor is detected
During value, described pressure sensor generates pressure early warning signal according to described pressure early warning value and exports, and described master controller is used for
Obtain the described pressure early warning signal of described pressure detecting module feedback, and control described compression according to described pressure early warning signal
Machine executes frequency reducing corresponding with described pressure early warning signal, controls described outdoor fan execution corresponding to described pressure early warning signal
Raising frequency, to reduce described pressure at expulsion.
Preferably it is characterised in that
When described pressure at expulsion exceedes maximum pressure early warning value in described pressure detecting module, described master controller is also used
According to maximum pressure early warning signal control described compressor corresponding with described maximum pressure early warning value and described outdoor fan
All out of service.
Preferably, described compressor is the compressor with multiple stage down function, and described outdoor fan is to have multistage liter
The outdoor fan of frequency function.
Preferably, described master controller controls described compressor execution pre- with described pressure according to described pressure early warning signal
The alert corresponding frequency reducing of signal, when controlling described outdoor fan to execute raising frequency corresponding with described pressure early warning signal, specifically,
Described master controller judges described pressure early warning signal for the first stage pressure early warning signal, controls described compressor to hold
Row one-level frequency reducing corresponding to described first stage pressure early warning signal, controls described outdoor fan execution pre- with described first stage pressure
Alert signal corresponding one-level raising frequency；
Described master controller judges described pressure early warning signal for the second stage pressure early warning signal, controls described compressor to hold
Row two grade frequency reducings corresponding with described second stage pressure early warning signal, control described outdoor fan execution and described second stage pressure
The corresponding two grades of raising frequencies of early warning signal；
Wherein, described first stage pressure early warning signal is described pressure at expulsion more than pressure during the first stage pressure early warning value
Early warning signal, described second stage pressure early warning signal is described pressure at expulsion more than pressure early warning during the second stage pressure early warning value
Signal, and described first stage pressure early warning value is less than described second stage pressure early warning value.
Preferably, described pressure sensor is switching mode pressure sensor.
A kind of anti-high pressure method of air-conditioning is it is characterised in that be applied to the anti-high-pressure system of air-conditioning described above, methods described
Including step:
When in described pressure detecting module, certain pressure sensor detects described pressure at expulsion beyond described pressure sensing
During the pressure early warning value of device, described pressure sensor generates pressure early warning signal according to described pressure early warning value and exports；
Described master controller obtains the described pressure early warning signal of described pressure detecting module feedback；
Described master controller controls described compressor execution and described pressure early warning signal according to described pressure early warning signal
Corresponding frequency reducing, controls described outdoor fan to execute raising frequency corresponding with described pressure early warning signal, to reduce described exhaust pressure
Power.
Preferably, also include:
When described pressure at expulsion exceedes maximum pressure early warning value in described pressure detecting module, described master controller foundation
Maximum pressure early warning signal corresponding with described maximum pressure early warning value controls described compressor and described outdoor fan all to stop
Run.
Preferably, when described compressor is the compressor with multiple stage down function, described outdoor fan is multistage for having
During the outdoor fan of raising frequency function, described, described master controller controls described compressor execution according to described pressure early warning signal
Frequency reducing corresponding with described pressure early warning signal, controls described outdoor fan to execute rise corresponding with described pressure early warning signal
Frequently, reducing described pressure at expulsion, specifically include:
Described master controller judges described pressure early warning signal for the first stage pressure early warning signal, controls described compressor to hold
Row one-level frequency reducing corresponding to described first stage pressure early warning signal, controls described outdoor fan execution pre- with described first stage pressure
Alert signal corresponding one-level raising frequency；
Described master controller judges described pressure early warning signal for the second stage pressure early warning signal, controls described compressor to hold
Row two grade frequency reducings corresponding with described second stage pressure early warning signal, control described outdoor fan execution and described second stage pressure
The corresponding two grades of raising frequencies of early warning signal；
Wherein, described first stage pressure early warning signal is described pressure at expulsion more than pressure during the first stage pressure early warning value
Early warning signal, described second stage pressure early warning signal is described pressure at expulsion more than pressure early warning during the second stage pressure early warning value
Signal, and described first stage pressure early warning value is less than described second stage pressure early warning value.
It can be seen from above-mentioned technical scheme that, the invention provides a kind of anti-high-pressure system of air-conditioning and anti-high pressure method,
The anti-high-pressure system of air-conditioning includes: compressor, condenser, evaporimeter, outdoor fan, pressure detecting module and master controller, due to
Pressure detecting module includes the pressure sensor of multiple different pressures early warning values, therefore, when the pressure at expulsion of compressor exceeds certain
During the pressure early warning value of individual pressure sensor, pressure detecting module can feed back corresponding pressure early warning signal to master controller, from
And master controller is according to the corresponding measure of reducing pressure of pressure early warning signal execution.Therefore, the present invention passes through to set multiple different pressures
It is achieved that multistage anti-high voltage control to air-conditioning, effective control air-conditioning is because of running overload for the pressure sensor of early warning value
The phenomenon that the hypertonia protection causing is shut down, that is, greatly reduce the machine stop times of air-conditioning, thus improve the refrigeration of air-conditioning
Or heating effect, and then improve the comfortableness of air-conditioning.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of the anti-high-pressure system of air-conditioning disclosed in the embodiment of the present invention；
Fig. 2 is a kind of structural representation of the anti-high-pressure system detection part of air-conditioning disclosed in the embodiment of the present invention；
Fig. 3 is a kind of structural representation of the anti-high-pressure system control section of air-conditioning disclosed in the embodiment of the present invention；
Fig. 4 is a kind of flow chart of the anti-high pressure method of air-conditioning disclosed in the embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Referring to Fig. 1, the embodiment of the invention discloses a kind of structural representation of the anti-high-pressure system of air-conditioning, air-conditioning anti-high pressure system
System includes: compressor 11, condenser 12, evaporimeter 18, outdoor fan 13, pressure detecting module 14 and master controller 15, wherein,
Pressure detecting module 14 includes the pressure sensor of multiple different pressures early warning values；
The outlet of compressor 11 is connected by gas exhaust piping with the entrance of condenser 12, the outlet of condenser 12 and evaporimeter
18 entrance connects, and the outlet of evaporimeter 18 is connected with the entrance of compressor 11；
Pressure detecting module 14 is arranged on described gas exhaust piping, to detect the exhaust pressure in compressor 11 running
Power；
Master controller 15 is connected with pressure detecting module 14, compressor 11 and outdoor fan 13 respectively, when pressure detecting mould
When in block 14, certain pressure sensor detects the pressure early warning value that pressure at expulsion finds described pressure sensor, described pressure passes
Sensor generates pressure early warning signal according to described pressure early warning value and exports, and master controller 15 is used for obtaining pressure detecting module 14
The described pressure early warning signal of feedback, and control compressor 11 execution and described pressure early warning letter according to described pressure early warning signal
Number corresponding frequency reducing, controls outdoor fan 13 to execute raising frequency corresponding with pressure early warning signal, to reduce pressure at expulsion.
In summary it can be seen, the present invention passes through to set the pressure sensor of multiple different pressures early warning values it is achieved that to sky
The multistage anti-high voltage control adjusted, the phenomenon that the hypertonia protection that effective control air-conditioning causes because of running overload is shut down,
Greatly reducing the machine stop times of air-conditioning, thus improve refrigeration or the heating effect of air-conditioning, and then improve relaxing of air-conditioning
Adaptive.
And, the anti-high-pressure system of air-conditioning disclosed by the invention, due to being set with multiple pressure sensors, therefore, it can effectively
Improve the safety and reliability that air-conditioning uses, reduce the danger causing because certain pressure sensor lost efficacy.
Wherein, condenser 12 and evaporimeter 18 are connected by electric expansion valve 17.
For convenience of to the narration of air-conditioning anti-high-pressure system operation principle and other to the anti-hiigh pressure stage of the anti-high-pressure system of air-conditioning
The pressure sensor of different pressures early warning value can be defined as the pressure sensor of different stage by classification.
Illustrate, referring to Fig. 2, a kind of knot of the anti-high-pressure system detection part of air-conditioning disclosed in another embodiment of the present invention
Structure schematic diagram, in the present embodiment, pressure detecting module 14 includes 3 pressure sensors, so the anti-high pressure of the air-conditioning in the present embodiment
System is 3 grades of anti-high-pressure systems, and 3 pressure sensors are respectively defined as first class pressure sensor 141, secondary pressure sensor
142 and three-level pressure sensor 143, wherein, the pressure early warning value of first class pressure sensor 141 is less than secondary pressure sensor
142 pressure early warning value, the pressure early warning value of secondary pressure sensor 142 is less than the pressure early warning of three-level pressure sensor 143
Value.When certain stage pressure sensor detects the pressure early warning value that pressure at expulsion exceeds this pressure sensor, this pressure sensor
Export a pressure early warning signal and feed back to master controller 15, master controller 15 receives pressure early warning signal, and according to this pressure
The corresponding measure of reducing pressure of early warning signal execution.
Accordingly, it is considered to the air-conditioning difference that anti-high pressure rank is required of different mounting locations, different use environment, this
The anti-high-pressure system of air-conditioning of bright offer can install the anti-high-pressure system of appropriate level, i.e. pressure detecting module for different demands
The rank of pressure sensor setting in 14 and quantity can be according to being actually needed change, so that the air-conditioning that the present invention provides
The range of anti-high-pressure system is wider, decreases the after-sales service problem causing because of high voltage protective simultaneously.
It should be noted is that, the preferred switching mode pressure sensor of the pressure sensor in above-described embodiment, positive reason
Under condition, the pressure switch of pressure sensors at different levels is in closure state, when pressure at expulsion is more than the pressure of n stage pressure sensor
During early warning value, the pressure switch of n stage pressure sensor disconnects automatically, feeds back a switching signal, main control to master controller 15
Device 15 obtains this switching signal, and executes corresponding logical action according to this switching signal, controls compressor 11 frequency reducing, control room
Outer blower fan 13 raising frequency, thus control pressure at expulsion.
Preferably, compressor 11 is the compressor with multiple stage down function, the pressure of every grade of amount of frequency redution and appropriate level
Sensor corresponds to.
Outdoor fan 13 is the outdoor fan with multistage raising frequency function, the pressure sensing of every grade of raising frequency amount and appropriate level
Device corresponds to.
Referring to Fig. 3, a kind of structural representation of the anti-high-pressure system control section of air-conditioning disclosed in another embodiment of the present invention,
When master controller 15 controls compressor 11 to execute frequency reducing corresponding with pressure early warning signal according to pressure early warning signal, control outdoor
When blower fan 13 executes raising frequency corresponding with pressure early warning signal, detailed process is:
Master controller 15 judges pressure early warning signal for the first stage pressure early warning signal, control compressor 11 execution with described
The corresponding one-level frequency reducing of first stage pressure early warning signal, controls outdoor fan 13 execution and described first stage pressure early warning signal phase
The one-level raising frequency answered；
Master controller 15 judges pressure early warning signal for the second stage pressure early warning signal, control compressor 11 execution with described
The corresponding two grades of frequency reducings of second stage pressure early warning signal, control outdoor fan 13 execution and described second stage pressure early warning signal phase
The two grades of raising frequencies answered；
Wherein, described first stage pressure early warning signal for pressure at expulsion more than pressure early warning during the first stage pressure early warning value
Signal (i.e. the pressure early warning signal of first class pressure sensor 141 feedback), described second stage pressure early warning signal is pressure at expulsion
More than the pressure early warning signal (the pressure early warning signal of secondary pressure sensor 142 feedback) during the second stage pressure early warning value,
And described first stage pressure early warning value is less than described second stage pressure early warning value.
It should be noted is that, for the security incident avoiding too high pressure at expulsion that air-conditioning is brought, work as pressure at expulsion
When exceeding maximum pressure early warning value in pressure detecting module 14, master controller 15 is additionally operable to according to described maximum pressure early warning value pair
The maximum pressure early warning signal answered controls compressor 11 and outdoor fan 13 all out of service.
The embodiment providing in conjunction with Fig. 3, master controller 15 judges pressure early warning signal for third level pressure early warning signal, main
Controller 15 controls compressor 11 and outdoor fan 13 execution stoppage protection, thus preventing the generation of security incident.
The concrete decompression process of master controller 15 is referring to following examples:
Assume that in the present embodiment, pressure detecting module 14 includes 3 pressure sensors, and that is, the anti-high-pressure system of air-conditioning adopts 3
The anti-high-pressure system of level, 3 pressure sensors are respectively first class pressure sensor, and pressure early warning value is 3.5mpa；Secondary pressure passes
Sensor, pressure early warning value is 3.9mpa；Three-level pressure sensor, pressure early warning value is 4.2mpa.
When the pressure at expulsion in compressor 11 running exceeds 3.5mpa, the pressure switch of first class pressure sensor is broken
Open, master controller 15, according to the switching signal of first class pressure sensor feedback, is immediately performed one-level anti-high pressure action, that is, control pressure
Contracting machine 11 executes one-level frequency reducing, so that compressor 11 is declined according to the 10% of goal-selling frequency in Preset Time (such as 40 seconds),
The 70% of goal-selling frequency can be dropped to greatly；Control outdoor fan 13 execution raising frequency action, that is, when under front windshield rotating speed, rise
A high windscreen；
If one-level safeguard procedures fail to reduce pressure at expulsion, when pressure at expulsion exceeds 3.9mpa, secondary pressure senses
The pressure switch of device disconnects, and master controller 15, according to the switching signal of secondary pressure sensor feedback, is immediately performed two grades of anti-height
Press work, that is, control compressor 11 to execute two grades of frequency reducings, so that compressor 11 was declined by the 20% of goal-selling frequency at 40 seconds,
The 50% of goal-selling frequency can be dropped to greatly；Control outdoor fan 13 execution raising frequency action, make outdoor fan 13 immediately plus rise to
Highest windscreen runs；
When due to air-conditioning local environment severe, or upper level pressure sensor (is secondary pressure sensing in the present embodiment
Device) pressure switch lost efficacy when, when leading to pressure at expulsion to exceed 4.2mpa, master controller 15 is immediately performed 3 grades of anti-high pressure actions,
To air-conditioning, anti-high-pressure system carries out system report high voltage protective, and control compressor 11 is out of service, and outdoor fan 13 is out of service, from
And guarantee the safe and reliable operation of air-conditioning system.
It should be noted is that, the master controller 15 that the present invention provides also has anti-high pressure rank adaptation function, main
The detection module of controller 15 can voluntarily detect in pressure detecting module 14 quantity of the pressure sensor of actual installation and
The pressure early warning value of each pressure sensor.
Specifically, in electric latter 10 seconds on master controller 15, by surface sweeping pressure detecting module 14, it is possible to obtain pressure detecting
The pressure early warning value of the quantity of pressure sensor and each pressure sensor in module 14, so that it is determined that the whole anti-high pressure of air-conditioning
The pressure protection level that system possesses.
For example, if only installing the pressure that two pressure early warning values are respectively 3.9mpa and 4.2mpa in pressure detecting module 14
Force snesor.Master controller 15 automatic detection can go out the pressure sensor that pressure detecting module 14 is installed after upper electric 10 seconds
Number is 2, and identifies corresponding pressure rank, thus judging that the anti-high-pressure system of this air-conditioning has 3.9mpa and 4.2mpa two-stage
Anti- high pressure ability.
It should be noted that in the various embodiments described above, described gas exhaust piping is refrigerant pipe.
The anti-high-pressure system of air-conditioning also includes: gas-liquid separator 16(is referring to Fig. 1), gas-liquid separator 16 respectively with compressor
11st, evaporimeter 18 connects, and gas-liquid separator 16 is used for preventing liquid refrigerant from flowing into compressor 11.
Wherein, gas-liquid separator 16 is connected by refrigerant pipe with compressor 11.
Corresponding with the anti-high-pressure system of above-mentioned air-conditioning, the invention also discloses a kind of anti-high pressure method of air-conditioning.
Referring to Fig. 4, a kind of flow chart of the anti-high pressure method of air-conditioning disclosed in the embodiment of the present invention, methods described is applied to figure
The anti-high-pressure system of air-conditioning in 1 embodiment, methods described includes step:
S41, when in pressure detecting module 14 certain pressure sensor detect pressure at expulsion exceed described pressure sensor
Pressure early warning value when, described pressure sensor generates pressure early warning signal exporting according to described pressure early warning value；
S42, master controller 15 obtain the described pressure early warning signal of pressure detecting module 14 feedback；
S43, master controller 15 control compressor 11 execution and described pressure early warning signal according to described pressure early warning signal
Corresponding frequency reducing, controls outdoor fan 13 to execute raising frequency corresponding with described pressure early warning signal, to reduce described pressure at expulsion.
In summary it can be seen, the present invention passes through to set the pressure sensor of multiple different pressures early warning values it is achieved that to sky
The multistage anti-high voltage control adjusted, the phenomenon that the hypertonia protection that effective control air-conditioning causes because of running overload is shut down,
Greatly reducing the machine stop times of air-conditioning, thus improve refrigeration or the heating effect of air-conditioning, and then improve relaxing of air-conditioning
Adaptive.
And, the anti-high-pressure system of air-conditioning disclosed by the invention, due to being set with multiple pressure sensors, therefore, it can effectively
Improve the safety and reliability that air-conditioning uses, reduce the danger causing because certain pressure sensor lost efficacy.
Wherein, the preferred switching mode of the pressure sensor in above-described embodiment pressure sensor, under normal circumstances, each stage pressure
The pressure switch of sensor is in closure state, when pressure at expulsion is more than the pressure early warning value of n stage pressure sensor, n level
The pressure switch of pressure sensor disconnects automatically, feeds back a switching signal to master controller 15, and master controller 15 obtains this and opens
OFF signal, and execute corresponding logical action according to this switching signal, control compressor 11 frequency reducing, control 13 liters of outdoor fan
Frequently, thus controlling pressure at expulsion.
It should be noted is that, for the security incident avoiding too high pressure at expulsion that air-conditioning is brought, therefore, above-mentioned
On the basis of embodiment, methods described further comprises the steps of:
S44, when pressure at expulsion exceedes maximum pressure early warning value in pressure detecting module 14, master controller 15 according to institute
Stating maximum pressure early warning value corresponding maximum pressure early warning signal controls compressor 11 and outdoor fan 13 all out of service.
Preferably, when compressor 11 is the compressor with multiple stage down function, outdoor fan 13 is to have multistage raising frequency
During the outdoor fan of function, step s43, specifically include:
S431, master controller 15 judge pressure early warning signal for the first stage pressure early warning signal, control compressor 11 to execute
One-level frequency reducing corresponding with described first stage pressure early warning signal, controls outdoor fan 13 execution and described first stage pressure early warning
Signal corresponding one-level raising frequency；
S432, master controller 15 judge pressure early warning signal for the second stage pressure early warning signal, control compressor 11 to execute
Two grade frequency reducings corresponding with described second stage pressure early warning signal, control outdoor fan 13 execution and described second stage pressure early warning
The corresponding two grades of raising frequencies of signal；
Wherein, described first stage pressure early warning signal for pressure at expulsion more than pressure early warning during the first stage pressure early warning value
Signal (i.e. the pressure early warning signal of first class pressure sensor 141 feedback), described second stage pressure early warning signal is pressure at expulsion
More than the pressure early warning signal (the pressure early warning signal of secondary pressure sensor 142 feedback) during the second stage pressure early warning value,
And described first stage pressure early warning value is less than described second stage pressure early warning value.
It should be noted is that, embodiment of the method is corresponding with system embodiment, and therefore, embodiment of the method respectively executes step
, referring to system embodiment, here is omitted for rapid concrete operating principle.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (8)
1. a kind of anti-high-pressure system of air-conditioning is it is characterised in that include: compressor, condenser, evaporimeter, outdoor fan, pressure inspection
Survey module and master controller, wherein, described pressure detecting module includes the pressure sensor of multiple different pressures early warning values；
The outlet of described compressor is connected by gas exhaust piping with the entrance of described condenser, the outlet of described condenser with described
The entrance of evaporimeter connects, and the outlet of described evaporimeter is connected with the entrance of described compressor；
Described pressure detecting module is arranged on described gas exhaust piping, to detect the exhaust pressure during described compressor operating
Power；
Described master controller is connected with described pressure detecting module, described compressor and described outdoor fan respectively, when described pressure
When in power detection module, certain pressure sensor detects the pressure early warning value that described pressure at expulsion exceeds described pressure sensor,
Described pressure sensor generates pressure early warning signal according to described pressure early warning value and exports, and described master controller is used for obtaining institute
State the described pressure early warning signal of pressure detecting module feedback, and control described compressor execution according to described pressure early warning signal
Frequency reducing corresponding with described pressure early warning signal, controls described outdoor fan to execute rise corresponding with described pressure early warning signal
Frequently, to reduce described pressure at expulsion.
2. the anti-high-pressure system of air-conditioning according to claim 1 it is characterised in that
When described pressure at expulsion exceedes maximum pressure early warning value in described pressure detecting module, described master controller be additionally operable to according to
Described compressor and described outdoor fan is controlled all to stop according to maximum pressure early warning signal corresponding with described maximum pressure early warning value
Only run.
3. the anti-high-pressure system of air-conditioning according to claim 1 is it is characterised in that described compressor is to have multiple stage down work(
The compressor of energy, described outdoor fan is the outdoor fan with multistage raising frequency function.
4. the anti-high-pressure system of air-conditioning according to claim 3 is it is characterised in that described master controller is pre- according to described pressure
Alert signal controls described compressor to execute frequency reducing corresponding with described pressure early warning signal, controls described outdoor fan execution and institute
When stating the corresponding raising frequency of pressure early warning signal, specifically,
Described master controller judges described pressure early warning signal for the first stage pressure early warning signal, control the execution of described compressor with
The corresponding one-level frequency reducing of described first stage pressure early warning signal, controls described outdoor fan execution and described first stage pressure early warning letter
Number corresponding one-level raising frequency；
Described master controller judges described pressure early warning signal for the second stage pressure early warning signal, control the execution of described compressor with
The corresponding two grades of frequency reducings of described second stage pressure early warning signal, control described outdoor fan execution and described second stage pressure early warning
The corresponding two grades of raising frequencies of signal；
Wherein, described first stage pressure early warning signal is described pressure at expulsion more than pressure early warning during the first stage pressure early warning value
Signal, described second stage pressure early warning signal is that described pressure at expulsion is believed more than pressure early warning during the second stage pressure early warning value
Number, and described first stage pressure early warning value is less than described second stage pressure early warning value.
5. the anti-high-pressure system of air-conditioning according to claim 1 is it is characterised in that described pressure sensor is switching mode pressure
Sensor.
6. a kind of anti-high pressure method of air-conditioning is it is characterised in that being applied to the anti-high-pressure system of air-conditioning described in claim 1, described
Method includes step:
When in described pressure detecting module, certain pressure sensor detects described pressure at expulsion beyond described pressure sensor
During pressure early warning value, described pressure sensor generates pressure early warning signal according to described pressure early warning value and exports；
Described master controller obtains the described pressure early warning signal of described pressure detecting module feedback；
Described master controller controls described compressor execution corresponding to described pressure early warning signal according to described pressure early warning signal
Frequency reducing, control described outdoor fan to execute raising frequency corresponding with described pressure early warning signal, to reduce described pressure at expulsion.
7. the anti-high pressure method of air-conditioning according to claim 6 is it is characterised in that also include:
When described pressure at expulsion exceedes maximum pressure early warning value in described pressure detecting module, described master controller according to and institute
Stating maximum pressure early warning value corresponding maximum pressure early warning signal controls described compressor and described outdoor fan all out of service.
8. the anti-high pressure method of air-conditioning according to claim 6 is it is characterised in that when described compressor is to have multiple stage down
The compressor of function, when described outdoor fan is the outdoor fan with multistage raising frequency function, described master controller is according to described
Pressure early warning signal controls described compressor to execute frequency reducing corresponding with described pressure early warning signal, controls described outdoor fan to hold
Row raising frequency corresponding with described pressure early warning signal, to reduce described pressure at expulsion, specifically includes:
Described master controller judges described pressure early warning signal for the first stage pressure early warning signal, control the execution of described compressor with
The corresponding one-level frequency reducing of described first stage pressure early warning signal, controls described outdoor fan execution and described first stage pressure early warning letter
Number corresponding one-level raising frequency；
Described master controller judges described pressure early warning signal for the second stage pressure early warning signal, control the execution of described compressor with
The corresponding two grades of frequency reducings of described second stage pressure early warning signal, control described outdoor fan execution and described second stage pressure early warning
The corresponding two grades of raising frequencies of signal；
Wherein, described first stage pressure early warning signal is described pressure at expulsion more than pressure early warning during the first stage pressure early warning value
Signal, described second stage pressure early warning signal is that described pressure at expulsion is believed more than pressure early warning during the second stage pressure early warning value
Number, and described first stage pressure early warning value is less than described second stage pressure early warning value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083636.7A CN103807987B (en) | 2014-03-07 | 2014-03-07 | High-pressure prevention system and method for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083636.7A CN103807987B (en) | 2014-03-07 | 2014-03-07 | High-pressure prevention system and method for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103807987A CN103807987A (en) | 2014-05-21 |
| CN103807987B true CN103807987B (en) | 2017-01-18 |
Family
ID=50705127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410083636.7A Active CN103807987B (en) | 2014-03-07 | 2014-03-07 | High-pressure prevention system and method for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103807987B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180279B (en) * | 2015-09-02 | 2018-09-04 | 广东美的制冷设备有限公司 | Split-floor type air conditioner, explosion prevention controlling process and device |
| CN105546732B (en) * | 2015-12-22 | 2019-01-22 | 广东美的暖通设备有限公司 | Multi-line system and its outer machine release control method |
| CN106839331A (en) * | 2017-03-06 | 2017-06-13 | 海信（广东）空调有限公司 | Air conditioner high-temperature pressure control method and air conditioner |
| CN107091517B (en) * | 2017-06-30 | 2023-09-12 | 珠海格力电器股份有限公司 | Protection control method and device of air conditioner unit and air conditioner unit |
| DE102017214941A1 (en) | 2017-08-25 | 2019-02-28 | Dometic Sweden Ab | Recreational vehicle, cooling device, control system and method of controlling the cooling device |
| WO2019082168A1 (en) | 2017-10-27 | 2019-05-02 | Dometic Sweden Ab | Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle |
| CN107992113A (en) * | 2017-12-19 | 2018-05-04 | 广东美的制冷设备有限公司 | Pressure limiting method, pressure limiting device and temperature control device |
| CN108278713B (en) * | 2018-01-19 | 2021-04-09 | 珠海格力电器股份有限公司 | Pressure control method and device |
| CN108917112B (en) * | 2018-07-25 | 2020-07-07 | 宁波奥克斯电气股份有限公司 | Method for graded control self-adaption of variable frequency outdoor unit and air conditioner |
| CN109140685A (en) * | 2018-08-21 | 2019-01-04 | 吉利汽车研究院（宁波）有限公司 | A kind of motor compressor method for controlling number of revolution and device |
| CN109612015B (en) * | 2018-12-24 | 2019-12-10 | 珠海格力电器股份有限公司 | Control protection method for air conditioner and air conditioner |
| CN111189209B (en) * | 2019-12-25 | 2021-11-23 | 宁波奥克斯电气股份有限公司 | Air conditioner control method |
| CN111231403A (en) * | 2019-12-31 | 2020-06-05 | 太田机械江苏有限公司 | Energy-saving control system and method for four-column hydraulic press |
| CN111442484B (en) * | 2020-03-11 | 2021-10-29 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioning system and air conditioning system |
| CN112856856B (en) * | 2020-05-22 | 2023-02-28 | 青岛海尔新能源电器有限公司 | Heat pump unit control method and heat pump unit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451758A (en) * | 2007-11-28 | 2009-06-10 | 海尔集团公司 | Multi-connection air conditioner load decentralized control method and system |
| CN103398515A (en) * | 2013-07-01 | 2013-11-20 | Tcl空调器(中山)有限公司 | Air conditioner system and control method thereof |
-
2014
- 2014-03-07 CN CN201410083636.7A patent/CN103807987B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451758A (en) * | 2007-11-28 | 2009-06-10 | 海尔集团公司 | Multi-connection air conditioner load decentralized control method and system |
| CN103398515A (en) * | 2013-07-01 | 2013-11-20 | Tcl空调器(中山)有限公司 | Air conditioner system and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103807987A (en) | 2014-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103807987B (en) | High-pressure prevention system and method for air conditioner | |
| CN110411057B (en) | Four-way valve reversing monitoring method and device and air conditioning system | |
| CN104819547B (en) | Fluorine-lacking detection and protection method and system during startup of variable frequency air conditioning system | |
| US9028011B2 (en) | Method for operating a parking brake module in the event of defects and parking brake module suitable for performing the method | |
| CN107388490B (en) | Air conditioner operation control method | |
| CN110906505B (en) | Air conditioner refrigerant leakage detection method and air conditioner | |
| CN109612015B (en) | Control protection method for air conditioner and air conditioner | |
| CN104964384A (en) | Fluorine-lack detection and protection method and system in operation of variable frequency air conditioning system | |
| CN104848479B (en) | Air conditioner and its refrigerant pipeline pressure monitor and system control method and device | |
| CN103940052A (en) | Air conditioner and fault detection method thereof | |
| CN104566762A (en) | Method and system for monitoring abnormity of air outlet of dehumidifier | |
| CN109489200A (en) | High-voltage prevention control device, air conditioner and operation control method of air conditioner | |
| CN107606821B (en) | Air conditioner compressor oil return system and oil return pipeline blockage judging method thereof | |
| CN109724207A (en) | Air conditioner and its control method | |
| CN101561363A (en) | Method for judging fault of four-way change valve of air conditioner | |
| CN110906504B (en) | Air conditioner refrigerant leakage detection method and air conditioner | |
| CN112393377A (en) | Fault judgment method and air conditioner | |
| CN104729138A (en) | Air conditioner and capacity change judgment method thereof | |
| CN112413946A (en) | Refrigerant recovery control method and device, refrigerant recovery equipment and air conditioning equipment | |
| CN109028459A (en) | Air-conditioner control method and air conditioner | |
| CN102956743B (en) | For the inflation method of vacuum equipment door opening process and the control device of gas replenishment process | |
| CN104896683B (en) | Pressure reduction device, air conditioning system, air conditioning control method and device | |
| CN213657186U (en) | Automatic liquid impact prevention system for refrigerant recovery machine | |
| CN112344607B (en) | Intelligent control method for obtaining optimal recovery speed of refrigerant recovery machine | |
| CN110906392B (en) | Operation monitoring method of building smoke exhaust system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |