CN106403167A - Air conditioner filth blockage detecting method and system based on single pressure sensor as well as air conditioner - Google Patents
Air conditioner filth blockage detecting method and system based on single pressure sensor as well as air conditioner Download PDFInfo
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- CN106403167A CN106403167A CN201610797870.5A CN201610797870A CN106403167A CN 106403167 A CN106403167 A CN 106403167A CN 201610797870 A CN201610797870 A CN 201610797870A CN 106403167 A CN106403167 A CN 106403167A
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- dirty stifled
- fan
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- pressure value
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Abstract
The invention particularly relates to an air conditioner filth blockage detecting method and system based on a single pressure sensor as well as an air conditioner. The method comprises the following steps of: obtaining a leeward side pressure value, under the rotation speed of a first fan, of a dust filter gauze or a leeward side pressure value, under the rotation speed of the first fan, of a heat exchanger; and obtaining the corresponding filth blockage grade of the dust filter gauze according to the rotation speed of the first fan and the leeward side pressure value of the dust filter gauze or obtaining the corresponding filth blockage grade of an indoor unit according to the rotation speed of the first fan and the leeward side pressure value of the heat exchanger. According to the air conditioner filth blockage detecting method, when the filth blockage grade of the dust filter gauze is detected, the rotation speed of the fan and the leeward side pressure value of the dust filter gauze are comprehensively considered; when the filth blockage grade of the indoor unit is detected, the rotation speed of the fan and the leeward side pressure value of the heat exchanger are comprehensively considered; and compared with a fan power detecting method and a double-side pressure difference detecting method, the air conditioner filth blockage detecting method has the advantages that the detected results are accurate, the detecting method is simple, only one pressure sensor is needed, and detecting cost is low.
Description
Technical field
The present invention relates to airconditioning control field, particularly to a kind of dirty stifled detection side of air-conditioning based on single pressure sensor
Method, system and air-conditioning.
Background technology
Dirt filtrating screen and heat exchanger occupy critical positions in indoor apparatus of air conditioner air circulation, and air first flows through dirt filtrating screen,
Constitute wind peripheral passage through heat exchanger again, air flows in air channel and the heat in heat exchanger is taken out of, thus realizing interior
The refrigeration in space or heat.But because in the air floats the presence of grit, both parts easily dust stratification and to affect air-conditioning indoor
The air circulation of machine.Either heat exchanger is dirty stifled or dirt filtrating screen is dirty stifled, all heat pump performance can be had a huge impact.Heat exchange
Device or dirt filtrating screen dirty stifled after, circulation in air channel for the air not, then can lead to the heat in heat exchanger can not fully distribute,
Cause in cooling mode, heat exchange temperature persistently reduces；Under heating mode, the result that heat exchange temperature persistently raises, and warm
Degree continuous decrease or rising can lead to heat exchanger and other device failure, or triggering air-conditioning protection mechanism and out of service.
In addition, indoor set heat exchanger or dirty the blocking up of dirt filtrating screen also can make air conditioning exhausting carry dust taste, so that Consumer's Experience is deteriorated.And
After dust adheres on dirt filtrating screen and heat exchanger, wherein, these bacteriums diffuse in interior a lot of bacteriums meeting parasitisms with air conditioning exhausting
Space can work the mischief to health.
The dirty stifled detection method of traditional dirt filtrating screen or indoor apparatus of air conditioner has power of fan detection method and bilateral pressure differential detection method.
Former approach belongs to indirect detection, and principle is that power of fan can change with the difference of dirty stifled degree.But due to air-conditioning system
Complexity, the factor of impact power of fan is a lot, except dirty stifled outer also a lot of other the dominance factors and Recessive elementS.Dominant because
Element such as voltage ripple of power network, wind guide strip angle etc. can be compensated for and revise, but many Recessive elementS do not have method and enter
Row compensates, and this is the maximum reason causing its testing result not accurate enough.Second detection method is the direct method of measurement, and detection is accurate
Really, but need two pressure sensors measure pressure at both sides simultaneously, cost is of a relatively high.
Content of the invention
The invention provides a kind of dirty stifled detection method of the air-conditioning based on single pressure sensor, system and air-conditioning, solve
Above technical problem.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：
According to one aspect of the present invention, there is provided a kind of dirty stifled detection method of the air-conditioning based on single pressure sensor,
Comprise the following steps：
Step 1, obtains the leeward side pressure value of dirt filtrating screen under the first rotation speed of fan, or the heat exchange under the first rotation speed of fan
The leeward side pressure value of device；
Step 2, obtains the dirty stifled grade of corresponding dirt filtrating screen according to the first rotation speed of fan and the leeward side pressure value of dirt filtrating screen, or
Person obtains the dirty stifled grade of corresponding indoor set according to the first rotation speed of fan and the leeward side pressure value of heat exchanger.
According to another aspect of the present invention, additionally provide a kind of dirty stifled detection system of air-conditioning based on single pressure sensor
System, including the first acquisition module and the second acquisition module,
Described first acquisition module is used for obtaining the leeward side pressure value of dirt filtrating screen under the first rotation speed of fan, or the first wind
The leeward side pressure value of heat exchanger under machine rotating speed；
Described second acquisition module is used for obtaining corresponding filter according to the first rotation speed of fan and the leeward side pressure value of dirt filtrating screen
The dirty stifled grade of dirt net, or it is dirty stifled etc. to obtain corresponding indoor set according to the first rotation speed of fan and the leeward side pressure value of heat exchanger
Level.
In order to solve the technical problem of the present invention, present invention also offers a kind of air-conditioning, including above-described based on list
The dirty stifled detecting system of air-conditioning of individual pressure sensor.
The invention has the beneficial effects as follows：The dirty stifled detection method of the present invention and detecting system, dirty stifled etc. obtaining dirt filtrating screen
Consider rotation speed of fan and dirt filtrating screen leeward side pressure value during level, consider blower fan when obtaining the dirty stifled grade of indoor set and turn
Speed and the leeward side pressure value of heat exchanger, compared to power of fan detection method and bilateral pressure differential detection method, not only testing result is accurate,
Detection method is simple and only needs to using a pressure sensor, and testing cost is cheap.
Brief description
Fig. 1 is the schematic flow sheet of the dirty stifled detection method of the air-conditioning based on single pressure sensor for the embodiment 1；
Fig. 2 is the structural representation of the dirty stifled detecting system of the air-conditioning based on single pressure sensor for the embodiment 1；
Fig. 3 is the schematic flow sheet of the dirty stifled detection method of the air-conditioning based on single pressure sensor for the embodiment 2；
Fig. 4 is the structural representation of the dirty stifled detecting system of the air-conditioning based on single pressure sensor for the embodiment 2；
Fig. 5 is a kind of structural representation of air-conditioning of embodiment 3.
Specific embodiment
Below in conjunction with accompanying drawing, the principle of the present invention and feature are described, example is served only for explaining the present invention, and
Non- for limiting the scope of the present invention.
The invention provides a kind of dirty stifled detection method of the air-conditioning based on single pressure sensor, comprise the following steps：
Step 1, obtains the leeward side pressure value of dirt filtrating screen under the first rotation speed of fan, or the heat exchange under the first rotation speed of fan
The leeward side pressure value of device；
Step 2, obtains the dirty stifled grade of corresponding dirt filtrating screen according to the first rotation speed of fan and the leeward side pressure value of dirt filtrating screen, or
Person obtains the dirty stifled grade of corresponding indoor set according to the first rotation speed of fan and the leeward side pressure value of heat exchanger.
Based on above-mentioned dirty stifled detection method, the present invention both can detect the dirty stifled degree of dirt filtrating screen it is also possible to detect air conditioning chamber
The dirty stifled degree of interior machine, the dirty stifled degree of indoor apparatus of air conditioner is the dirty stifled degree of entirety of dirt filtrating screen and heat exchanger, both differences
It is that the position setting of pressure sensor is different.When the dirty stifled degree needing to detect dirt filtrating screen, pressure sensor is arranged on
Between dirt filtrating screen and heat exchanger, by detecting the pressure of dirt filtrating screen leeward side and the dirty stifled of the first rotation speed of fan acquisition dirt filtrating screen etc.
Level；When the dirty stifled degree needing to detect indoor set, pressure sensor is arranged on the leeward side of heat exchanger, by detecting heat exchange
The pressure of device leeward side and the dirty stifled grade of the first rotation speed of fan acquisition indoor set.In both the above method, except pressure sensing
The data of the position of device setting and collection is different, remaining step all same.Therefore following examples are only dirty to detection dirt filtrating screen
The method of stifled grade is described in detail, and the step of the method reference implementation example of the detection dirty stifled grade of indoor set is modified i.e.
Can.Meanwhile, the present invention can obtain the dirty stifled grade of dirt filtrating screen using two methods, and one kind is detection filter under current rotation speed of fan
The dirty stifled grade of dirt net, another kind is that current rotation speed of fan is adjusted to target fan rotating speed, then calculates under target fan rotating speed
The dirty stifled grade of dirt filtrating screen, individually below above two method is described in detail.
As shown in figure 1, illustrating for a kind of flow process of the dirty stifled detection method of air-conditioning based on single pressure sensor of embodiment 1
Figure, comprises the following steps：
Step 1, obtains current rotation speed of fan and the leeward side pressure value of current dirt filtrating screen；
Step 2, obtains corresponding dirt filtrating screen according to current rotation speed of fan and the leeward side pressure value of current dirt filtrating screen dirty stifled etc.
Level.
In the present embodiment step 1, directly gathering current rotation speed of fan by speed probe is 960r/min, by pressure
The sensor collection leeward side pressure value of dirt filtrating screen is p0.In other embodiments, in order to ensure the leeward side pressure value of dirt filtrating screen
Accuracy, the method that average can be taken using multi collect, specially：Keep current rotation speed of fan constant, pass to by pressure
Sensor continuous acquisition to multiple pressure value of dirt filtrating screen leeward side take and be all worth to the leeward side pressure value of the dust filtration net.Such as
During detection, obtain current rotation speed of fan 960r/min first, keep current rotation speed of fan to be that 960r/min is constant, continuously detect 5
Secondary leeward lateral pressure, the leeward side pressure value of dirt filtrating screen that is averagely worth to taking 5 pressure datas is p0.In other embodiments,
Can also to by pressure sensor continuous acquisition to multiple pressure value of dirt filtrating screen leeward side remove maximum and minimum of a value
After take and be all worth to the leeward side pressure value of the dust filtration net, here is not illustrated in detail.
In the present embodiment step 2, by inquiring about the dirty stifled grade of dirt filtrating screen pre-building and different rotation speed of fan, dirt filtrating screen
First mapping table of leeward side pressure value, obtains the leeward side pressure value of current dirt filtrating screen corresponding under current rotation speed of fan
The dirty stifled grade of dirt filtrating screen.Not only stifled degree dirty with dirt filtrating screen is relevant for the leeward lateral pressure of air intake dirt filtrating screen, and and rotation speed of fan
Relevant, rotation speed of fan is bigger, dirty stifled more serious, and the leeward lateral pressure of dirt filtrating screen is less, therefore when assessing the dirty stifled grade of dirt filtrating screen,
Only consider rotation speed of fan and the leeward lateral pressure of dirt filtrating screen, the dirty stifled grade of the dirt filtrating screen obtaining just can be more accurate.This reality
Apply in example, the first mapping table is to obtain in the process that air-conditioning is carried out with data test, and before air-conditioning dispatches from the factory just
It is solidificated in operation of air conditioner program to facilitate inquiry to use.During data test, set up described first mapping table bag
Include following steps：
S201, blower fan running speed scope can be divided into m rotating speed interval d1～dm according to default speed spans；m
Can running speed scope and speed spans determine by blower fan, speed spans span is advisable for 30～120, the too little institute of value
Pressure measurement force value is not changed in, and value too conference affects the accuracy of finally dirty stifled testing result.
S202, when obtaining the use of air-conditioning first time, tachometer value corresponding dirt filtrating screen leeward side at each rotating speed interval midpoint
Pressure value, and leeward for the dust filtration net side pressure value is set to the first numerical value；
S203, after Preset Time, such as through 1 year and when dirt filtrating screen does not clean always, obtains each rotating speed again
The leeward side pressure value of the corresponding dirt filtrating screen of tachometer value at interval midpoint, and leeward for the dust filtration net side pressure value is set to the second number
Value；Described first numerical value and second value form the interval corresponding dirt filtrating screen leeward side range of pressure values of this rotating speed；
S204, the dust filtration net leeward side range of pressure values is divided equally according to default dirty stifled number of levels, obtains
Under this rotating speed interval, the corresponding dirt filtrating screen leeward side range of pressure values of the dirty stifled grade of each dirt filtrating screen.In the present embodiment, respectively individual
Number can arbitrarily be chosen as needed, and only need to meet pressure value in each dirty stifled grade has certain span, such as the present embodiment
Middle the dust filtration net leeward side range of pressure values is divided into 4 small ranges, the corresponding dirt filtrating screen of each small range is dirty stifled etc.
Level, the dirty stifled grade of dirt filtrating screen will be divided into 4 grades.In the present embodiment, blower fan can running speed minimum limits value be 600r/min,
Big limits value is 1199r/min, and speed spans take 100r/min, then m is 6, that is, form this 6 rotating speed intervals of d1～d6, each
The dirty stifled grade of the corresponding dirt filtrating screen in rotating speed interval is all divided into 4 grades, can form the first mapping table as shown in table 1 below：
The first interval mapping table of the different rotation speed of fan of table 1
In the present embodiment, current rotation speed of fan is 960r/min, is in d4 interval；If P42 ＜ is p0≤P43, can obtain
It is z3 level to the dirty stifled grade of dirt filtrating screen now, then according to the dirty stifled grade of dirt filtrating screen, air-conditioning can be controlled accordingly
System.
In other embodiments it is also possible to set up the second couple of the dirty stifled grade for obtaining indoor set according to as above method
Answer relation table, specifically include following steps：
Blower fan running speed scope can be divided into multiple rotating speeds intervals according to default speed spans；Described speed spans
For 30～120r/min；
When obtaining the use of air-conditioning first time, the leeward lateral pressure of the corresponding heat exchanger of tachometer value at each rotating speed interval midpoint
Value, and leeward for described heat exchanger side pressure value is set to the first numerical value；
After Preset Time, obtain the leeward lateral pressure of the corresponding heat exchanger of tachometer value at each rotating speed interval midpoint again
Value, and leeward for described heat exchanger side pressure value is set to second value；Described first numerical value and second value form this rotating speed area
Between corresponding heat exchanger leeward side range of pressure values；
Described heat exchanger leeward side range of pressure values is divided equally according to default dirty stifled number of levels, is obtained this rotating speed
Under interval, the corresponding heat exchanger leeward side range of pressure values of the dirty stifled grade of each indoor set.
Then pass through to inquire about described second mapping table, obtain the leeward side pressure value of current heat exchanger and turn in current blower fan
The dirty stifled grade of corresponding indoor set under speed.
After the dirty stifled detection method of the present invention obtains the dirty stifled grade of dirt filtrating screen, can be according to different dirt filtrating screens
Dirty stifled grade or the dirty stifled grade of indoor set take different control modes, in such as the present embodiment to air-conditioning：
When the dirty stifled grade of dirt filtrating screen or the dirty stifled grade of indoor set are z1 level, dirty stifled grade is shown by display board；
When the dirty stifled grade of dirt filtrating screen or the dirty stifled grade of indoor set are z2 level, dirty stifled grade is shown by display board, with
Buzzer rings prompting or intelligent voice prompt is adopted during Shi Kaiji；
When the dirty stifled grade of dirt filtrating screen or the dirty stifled grade of indoor set are z3 level, dirty stifled grade is shown by display board, with
Shi Caiyong buzzer carries out buzzing prompting in the way of multiple ring in short-term and/or carries out intelligence in air-conditioning start and/or when running
Energy voice message, and drive cleaning device to carry out automated cleaning；
When the dirty stifled grade of dirt filtrating screen or the dirty stifled grade of indoor set are z4 level, dirty stifled grade are shown by display board, adopts
Carry out buzzing prompting in air-conditioning start and/or when running with buzzer in the way of multiple ring in short-term and/or carry out intelligent language
Sound is pointed out, and controls air-conditioning out of service；In described control mode, dirty stifled higher grade, and dirt filtrating screen or dirty the blocking up of indoor set are got over
Seriously.
In other embodiments, obtain the dirty stifled grade of dirt filtrating screen by the dirty stifled detection method of the present invention after, also may be used
To carry out following control：The dirty stifled grade of the dust filtration net or the dirty stifled grade of indoor set is detected again after Preset Time, when
When the dirty stifled grade of dirt filtrating screen or the dirty stifled grade of indoor set do not decline, lift rotation speed of fan, air quantity is compensated automatically.Right
Air quantity carries out automatic step and comprises the following steps：
S301, obtains corresponding rotation speed of fan compensation rate according to the dirty stifled grade of dirt filtrating screen；
S302, obtains the rotating speed of target of blower fan according to rotation speed of fan compensation rate；
S303, the rotating speed of target according to blower fan controls fan operation.
In described S301, by inquiring about the mapping table of the dirty stifled grade of dirt filtrating screen pre-building and rotation speed of fan compensation rate,
Obtain the currently corresponding rotation speed of fan compensation rate of dirty stifled grade.Or pre-build rotation speed of fan compensation rate computing formula, ought
Front dirty stifled grade substitutes into corresponding rotation speed of fan compensation rate computing formula, generates the corresponding rotation speed of fan of currently dirty stifled grade and compensates
Amount.
As shown in Fig. 2 being the dirty stifled detecting system of air-conditioning based on single pressure sensor corresponding with the method for embodiment 1
Structural representation, including the first acquisition module and the second acquisition module, described first acquisition module is used for obtaining current blower fan
Rotating speed and the leeward side pressure value of current dirt filtrating screen, or be used for obtaining current rotation speed of fan and the leeward lateral pressure of current heat exchanger
Value；Described second acquisition module is used for obtaining corresponding filter dirt according to current rotation speed of fan and the leeward side pressure value of current dirt filtrating screen
Net dirty stifled grade, or dirty for corresponding indoor set is obtained according to current rotation speed of fan and the leeward side pressure value of current heat exchanger
Stifled grade.
Preferably, also include control module in the present embodiment, described control module is used for dirty stifled according to different dirt filtrating screens
Grade or the dirty stifled grade of different indoor sets take different control modes to air-conditioning；And/or for after Preset Time
The detection dirty stifled grade of the dust filtration net or dirty stifled grade of indoor set again, when the dirty stifled grade of dirt filtrating screen or indoor set are dirty stifled etc.
When level does not decline, lift rotation speed of fan, air quantity is compensated automatically.
Preferably, described in the present embodiment, the first acquisition module includes：Rotating speed collecting unit, turns for gathering current blower fan
Speed；It is arranged on the first pressure sensor between dirt filtrating screen and heat exchanger, for the pressure value of continuous acquisition dirt filtrating screen leeward side；
Or it is arranged on the second pressure sensor of heat exchanger leeward side, for the pressure value of continuous acquisition heat exchanger leeward side；Calculate
Unit, for continuous acquisition to multiple pressure value of dirt filtrating screen leeward side directly take average or remove maximum, minimum
The multiple pressure being all worth to the leeward side pressure value of the dust filtration net or the heat exchanger leeward side that continuous acquisition is arrived are taken after value
Value directly takes average or removes maximum, takes after minimum of a value and be all worth to the leeward side pressure value of described heat exchanger.
Described second acquisition module includes memory cell, for storing the dirty stifled grade of dirt filtrating screen pre-building and different wind
First mapping table of the leeward side pressure value of machine rotating speed, dirt filtrating screen, or dirty stifled etc. for the indoor set that pre-builds of storage
Level and different rotation speed of fan, the second mapping table of the leeward side pressure value of heat exchanger；Query unit, for inquiring about described first
Mapping table, obtains the dirty stifled grade of the leeward side pressure value of current dirt filtrating screen corresponding dirt filtrating screen under current rotation speed of fan, or
Person is used for inquiry the second mapping table, obtains the leeward side pressure value of current heat exchanger corresponding interior under current rotation speed of fan
The dirty stifled grade of machine.
The dirty stifled detection method of the present invention and detecting system, consider rotation speed of fan when obtaining the dirty stifled grade of dirt filtrating screen
The leeward side pressure value with dirt filtrating screen, considers rotation speed of fan and the leeward lateral pressure of heat exchanger when obtaining the dirty stifled grade of indoor set
Value, compared to power of fan detection method and bilateral pressure differential detection method, not only accurately, detection method is simple and only needs for testing result
To use a pressure sensor, testing cost is cheap.
As described in Figure 3, it is the method that embodiment 2 carries out dirty stifled detection based on single pressure sensor to dirt filtrating screen, including
Following steps：
Step 1, current rotation speed of fan is adjusted to default target fan rotating speed, and obtains the filter under target fan rotating speed
The leeward side pressure value of dirt net；
Step 2, obtains the dirty stifled grade of corresponding dirt filtrating screen according to the leeward side pressure value of the dust filtration net
In the present embodiment step 1, first the current rotation speed of fan of blower fan is adjusted to target fan rotating speed, such as 960r/
Min, then gathering the leeward side pressure value of dirt filtrating screen by pressure sensor is p0.In other embodiments, in order to ensure to filter dirt
Net the accuracy of leeward side pressure value, the method that average can be taken using multi collect, specially：Keep target fan rotating speed
960r/min is constant, to by pressure sensor continuous acquisition to multiple pressure value of dirt filtrating screen leeward side take and be all worth to institute
State the leeward side pressure value of dirt filtrating screen.When such as detecting, current rotation speed of fan is kept to be that 960r/min is constant, continuous 5 back ofs the body of detection
Wind lateral pressure, the leeward side pressure value of dirt filtrating screen that is averagely worth to taking 5 pressure datas is p0.In other embodiments, also may be used
With to by pressure sensor continuous acquisition to multiple pressure value of dirt filtrating screen leeward side remove and take after maximum and minimum of a value
All it is worth to the leeward side pressure value of the dust filtration net, here is not illustrated in detail.
Then, by inquiring about the dirty stifled grade of dirt filtrating screen and the leeward lateral pressure of dirt filtrating screen under the target fan rotating speed pre-building
3rd mapping table of value, obtains the dirty stifled grade of the corresponding dirt filtrating screen of the dust filtration net leeward side pressure value p0.The present embodiment
In, the 3rd mapping table is to obtain in the process that air-conditioning is carried out with data test, and just has cured before air-conditioning dispatches from the factory
To facilitate inquiry to use in operation of air conditioner program.Meanwhile, turned by rotation speed of fan is fixed as target fan in the present embodiment
Speed, therefore only needs to obtain under target fan rotating speed during data test, the leeward side pressure value of dirt filtrating screen and dirt filtrating screen are dirty
The corresponding relation of stifled grade, need not move through repeated detection obtain under different rotation speed of fan values the leeward side pressure value of dirt filtrating screen and
The corresponding relation of the dirty stifled grade of dirt filtrating screen, the process hence setting up the 3rd mapping table is simpler.On the other hand, the present invention
Do not need blower fan can be divided into running speed multiple rotating speeds intervals, by the corresponding filter of tachometer value at each rotating speed interval midpoint
The leeward side pressure value of dirt net simply to weigh each dirty stifled grade of the corresponding dirt filtrating screen in rotating speed interval, the therefore testing result of acquisition
Also can be more accurate.The present embodiment, during data test, is set up described 3rd mapping table and is comprised the following steps：
S201, when obtaining air-conditioning first time and using, the leeward side pressure value of the corresponding dirt filtrating screen of target fan rotating speed, and by institute
State the leeward side pressure value of dirt filtrating screen and be set to the first numerical value；
S202, after Preset Time, obtains the leeward side pressure value of the corresponding dirt filtrating screen of target fan rotating speed again, and will
The leeward side pressure value of the dust filtration net is set to second value；Described first numerical value is corresponding with second value formation target fan rotating speed
Dirt filtrating screen leeward side range of pressure values；
S203, the dust filtration net leeward side range of pressure values is divided equally according to default dirty stifled number of levels, obtains
Under target fan rotating speed, the corresponding dirt filtrating screen leeward side range of pressure values of the dirty stifled grade of each dirt filtrating screen.In the present embodiment, respectively
Number can arbitrarily be chosen as needed, and only need to meet range of pressure values in each dirty stifled grade has certain span, such as originally
In embodiment, the dust filtration net leeward side range of pressure values is divided into 4 small ranges, each small range corresponds to a dirt filtrating screen
Dirty stifled grade, the dirty stifled grade of dirt filtrating screen will be divided into 4 grades.In the present embodiment, target fan rotating speed is 960r/min, filter is detected
The leeward side pressure value of dirt net is p0, and the dirty stifled grade of corresponding dirt filtrating screen is all divided into 4 grades, can form as shown in table 1 below the 3rd right
Answer relation table：
The 3rd mapping table under table 2 target fan rotating speed
In the present embodiment step 3, dirt filtrating screen leeward side pressure value p0, between P11-P12, can obtain dirt filtrating screen
Dirty stifled grade is z2 level, then according to the dirty stifled grade of dirt filtrating screen, air-conditioning can be controlled accordingly.
In other embodiments it is also possible to that sets up the dirty stifled grade for obtaining indoor set according to as above method is the 4th right
Answer relation table, specifically include following steps：
When obtaining the use of air-conditioning first time, the leeward side pressure value of the corresponding heat exchanger of target fan rotating speed, and change described
The leeward side pressure value of hot device is set to the first numerical value；
After Preset Time, obtain the leeward side pressure value of the corresponding heat exchanger of target fan rotating speed again, and will be described
The leeward side pressure value of heat exchanger is set to second value；Described first numerical value and second value form that target fan rotating speed is corresponding to be changed
Hot device leeward side range of pressure values；
Described heat exchanger leeward side range of pressure values is divided equally according to default dirty stifled number of levels, is obtained target wind
Under machine rotating speed, the corresponding heat exchanger leeward side range of pressure values of the dirty stifled grade of each indoor set.
Then pass through to inquire about described 4th mapping table, the leeward lateral pressure of described heat exchanger that obtaining step 1 calculates
It is worth the dirty stifled grade of corresponding indoor set.
In other embodiments of the invention it is also possible to preset multiple target fan rotating speeds, and the 3rd corresponding relation
Table includes under each target fan rotating speed, the corresponding relation of the leeward side pressure value of dirt filtrating screen and the dirty stifled grade of dirt filtrating screen, and the 4th
Mapping table includes under each target fan rotating speed, the corresponding pass of the leeward side pressure value of heat exchanger stifled grade dirty with indoor set
System, so when applying the method for the present invention, can select immediate target fan rotating speed according to current rotation speed of fan, to the greatest extent may be used
It is avoided that and current rotation speed of fan is adjusted, not only control process is simpler, and can ensure that dirty stifled grade detection knot
The accuracy of fruit.
After the dirty stifled detection method of the present invention obtains the dirty stifled grade of dirt filtrating screen, can be according to different dirt filtrating screens
Dirty stifled grade or the dirty stifled grade of heat exchanger take different control modes to air-conditioning, or air quantity are compensated automatically, specifically
The method with being referred in embodiment 1 for the method, here is not described in detail.
As shown in figure 4, being the dirty stifled detecting system of air-conditioning based on single pressure sensor corresponding with the method for embodiment 2
Structural representation, including adjustment of rotational speed module, the first acquisition module and the second acquisition module, described adjustment of rotational speed module is used for
Current rotation speed of fan is adjusted to default target fan rotating speed；Described first acquisition module is used for obtaining under target fan rotating speed
The leeward side pressure value of dirt filtrating screen or the leeward side pressure value of heat exchanger；Described second acquisition module is used for according to the dust filtration net
Leeward side pressure value obtains the dirty stifled grade of corresponding dirt filtrating screen, or is obtained corresponding according to the leeward side pressure value of described heat exchanger
The dirty stifled grade of indoor set.
Preferably, also include control module in the present embodiment, described control module is used for dirty stifled according to different dirt filtrating screens
Grade or the dirty stifled grade of different indoor sets take different control modes to air-conditioning；And/or for after Preset Time
The detection dirty stifled grade of the dust filtration net or dirty stifled grade of indoor set again, when the dirty stifled grade of dirt filtrating screen or indoor set are dirty stifled etc.
When level does not decline, lift rotation speed of fan, air quantity is compensated automatically.
Preferably, described in the present embodiment, the first acquisition module includes：It is arranged on first between dirt filtrating screen and heat exchanger
Pressure sensor, for the pressure value of continuous acquisition dirt filtrating screen leeward side；Or it is arranged on the second pressure of heat exchanger leeward side
Sensor, for the pressure value of continuous acquisition heat exchanger leeward side；Computing unit, the dirt filtrating screen for arriving to continuous acquisition is leeward
Multiple pressure value of side directly take average or remove maximum, take after minimum of a value and be all worth to the leeward lateral pressure of the dust filtration net
Value or to continuous acquisition to heat exchanger leeward side multiple pressure value directly take average or remove maximum, after minimum of a value
Take and be all worth to the leeward side pressure value of described heat exchanger.
Described second acquisition module includes memory cell, dirty for storing dirt filtrating screen under the target fan rotating speed pre-building
Stifled grade and the 3rd mapping table of the leeward side pressure value of dirt filtrating screen, or the target fan rotating speed pre-building for storage
The dirty stifled grade of lower indoor set and the 4th mapping table of the leeward side pressure value of heat exchanger；Query unit, for inquiring about described
Three mapping tables, the leeward side pressure value of the dirt filtrating screen that obtaining step 1 calculates corresponding dirt filtrating screen under target fan rotating speed
Dirty stifled grade, or for inquiry the 4th mapping table, the leeward side pressure value of the heat exchanger that obtaining step 1 calculates is in target
The dirty stifled grade of corresponding indoor set under rotation speed of fan.
The dirty stifled detection method of the present invention and detecting system, consider rotation speed of fan when obtaining the dirty stifled grade of dirt filtrating screen
The leeward side pressure value with dirt filtrating screen, considers rotation speed of fan and the leeward lateral pressure of heat exchanger when obtaining the dirty stifled grade of indoor set
Value, compared to power of fan detection method and bilateral pressure differential detection method, not only accurately, detection method is simple and only needs for testing result
To use a pressure sensor, testing cost is cheap.
As shown in figure 5, being a kind of structural representation of air-conditioning of the present embodiment 3, including above-described based on single pressure
The dirty stifled detecting system of air-conditioning of sensor.
In describing the invention it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " the
One ", the feature of " second " can be expressed or implicitly include at least one this feature.In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example
Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (17)
1. a kind of dirty stifled detection method of the air-conditioning based on single pressure sensor is it is characterised in that comprise the following steps：
Step 1, obtains the leeward side pressure value of dirt filtrating screen under the first rotation speed of fan, or the heat exchanger back of the body under the first rotation speed of fan
Wind side pressure value；
Step 2, obtains the dirty stifled grade of corresponding dirt filtrating screen according to the first rotation speed of fan and the leeward side pressure value of dirt filtrating screen, or root
Obtain the dirty stifled grade of corresponding indoor set according to the first rotation speed of fan and the leeward side pressure value of heat exchanger.
2. the dirty stifled detection method of the air-conditioning based on single pressure sensor according to claim 1 is it is characterised in that also wrap
Include step 3, specially：Difference is taken to air-conditioning according to the different dirty stifled grades of dirt filtrating screen or the dirty stifled grade of different indoor sets
Control mode.
3. the dirty stifled detection method of the air-conditioning based on single pressure sensor according to claim 1 is it is characterised in that also wrap
Include step 3, specially：The dirty stifled grade of the dust filtration net or the dirty stifled grade of indoor set is detected again after Preset Time, when
When the dirty stifled grade of dirt filtrating screen or the dirty stifled grade of indoor set do not decline, lift rotation speed of fan, air quantity is compensated automatically.
4., according to the dirty stifled detection method of the arbitrary described air-conditioning based on single pressure sensor of claims 1 to 3, its feature exists
In, in step 1, keep the first rotation speed of fan constant, many to the dirt filtrating screen leeward side being arrived by pressure sensor continuous acquisition
Individual pressure value directly takes average or removes maximum, takes after minimum of a value and be all worth to the leeward side pressure value of dirt filtrating screen, or right
By pressure sensor continuous acquisition to multiple pressure value of heat exchanger leeward side directly take average or remove maximum,
Take after little value and be all worth to the leeward side pressure value of heat exchanger.
5. the dirty stifled detection method of the air-conditioning based on single pressure sensor according to claim 4 is it is characterised in that described
First rotation speed of fan is current rotation speed of fan or target fan rotating speed.
6. the dirty stifled detection method of the air-conditioning based on single pressure sensor according to claim 5 is it is characterised in that when the
When one rotation speed of fan is current rotation speed of fan, in step 2, inquire about the dirty stifled grade of dirt filtrating screen pre-building and different blower fan turns
Speed, the first mapping table of the leeward side pressure value of dirt filtrating screen, obtain the leeward side pressure value of current dirt filtrating screen and turn in current blower fan
The dirty stifled grade of corresponding dirt filtrating screen under speed；
Or inquire about the dirty stifled grade of indoor set pre-building and different rotation speed of fan, the second couple of the leeward side pressure value of heat exchanger
Answer relation table, obtain the dirty stifled grade of the leeward side pressure value of current heat exchanger corresponding indoor set under current rotation speed of fan.
7. the dirty stifled detection method of the air-conditioning based on single pressure sensor according to claim 6 is it is characterised in that step
In 2, set up described first mapping table and comprise the following steps：
Blower fan running speed scope can be divided into multiple rotating speeds intervals according to default speed spans；Described speed spans are 30
～120r/min；
When obtaining the use of air-conditioning first time, the leeward side pressure value of the corresponding dirt filtrating screen of tachometer value at each rotating speed interval midpoint, and
Leeward for the dust filtration net side pressure value is set to the first numerical value；
After Preset Time, obtain the leeward side pressure value of the corresponding dirt filtrating screen of tachometer value at each rotating speed interval midpoint again,
And leeward for the dust filtration net side pressure value is set to second value；It is right that described first numerical value and second value form this rotating speed interval
The dirt filtrating screen leeward side range of pressure values answered；
The dust filtration net leeward side range of pressure values is divided equally according to default dirty stifled number of levels, is obtained this rotating speed interval
Under, the corresponding dirt filtrating screen leeward side range of pressure values of the dirty stifled grade of each dirt filtrating screen.
8. the dirty stifled detection method of the air-conditioning based on single pressure sensor according to claim 6 is it is characterised in that step
In 2, set up described second mapping table and comprise the following steps：
Blower fan running speed scope can be divided into multiple rotating speeds intervals according to default speed spans；Described speed spans are 30
～120r/min；
When obtaining the use of air-conditioning first time, the leeward side pressure value of the corresponding heat exchanger of tachometer value at each rotating speed interval midpoint, and
Leeward for described heat exchanger side pressure value is set to the first numerical value；
After Preset Time, obtain the leeward side pressure value of the corresponding heat exchanger of tachometer value at each rotating speed interval midpoint again,
And leeward for described heat exchanger side pressure value is set to second value；It is right that described first numerical value and second value form this rotating speed interval
The heat exchanger leeward side range of pressure values answered；
Described heat exchanger leeward side range of pressure values is divided equally according to default dirty stifled number of levels, is obtained this rotating speed interval
Under, the corresponding heat exchanger leeward side range of pressure values of the dirty stifled grade of each indoor set.
9. the dirty stifled detection method of the air-conditioning based on single pressure sensor according to claim 5 is it is characterised in that when the
When one rotation speed of fan is target fan rotating speed, in step 2, inquire about the dirty stifled grade of dirt filtrating screen under the target fan rotating speed pre-building
With the 3rd mapping table of the leeward side pressure value of dirt filtrating screen, the leeward side pressure value of the dust filtration net that obtaining step 1 calculates
The dirty stifled grade of corresponding dirt filtrating screen；
Or inquire about the 4th of the dirty stifled grade of indoor set and the leeward side pressure value of heat exchanger under the target fan rotating speed that pre-builds the
Mapping table, the dirty stifled grade of the corresponding indoor set of the leeward side pressure value of described heat exchanger that obtaining step 1 calculates.
10. the dirty stifled detection method of the air-conditioning based on single pressure sensor according to claim 9 is it is characterised in that step
In rapid 2, set up described 3rd mapping table and comprise the following steps：
When obtaining air-conditioning first time and using, the leeward side pressure value of the corresponding dirt filtrating screen of target fan rotating speed, and by the dust filtration net
Leeward side pressure value is set to the first numerical value；
After Preset Time, obtain the leeward side pressure value of the corresponding dirt filtrating screen of target fan rotating speed again, and by the dust filtration
Net leeward side pressure value and be set to second value；Described first numerical value and second value form the corresponding dirt filtrating screen of target fan rotating speed
Leeward side range of pressure values；
The dust filtration net leeward side range of pressure values is divided equally according to default dirty stifled number of levels, obtains target fan and turn
Under speed, the corresponding dirt filtrating screen leeward side range of pressure values of the dirty stifled grade of each dirt filtrating screen.
11. the dirty stifled detection method of the air-conditioning based on single pressure sensor according to claim 9 is it is characterised in that step
In rapid 2, set up described 4th mapping table and comprise the following steps：
When obtaining air-conditioning first time and using, the leeward side pressure value of the corresponding heat exchanger of target fan rotating speed, and by described heat exchanger
Leeward side pressure value is set to the first numerical value；
After Preset Time, obtain the leeward side pressure value of the corresponding heat exchanger of target fan rotating speed again, and by described heat exchange
The leeward side pressure value of device is set to second value；Described first numerical value and second value form the corresponding heat exchanger of target fan rotating speed
Leeward side range of pressure values；
Described heat exchanger leeward side range of pressure values is divided equally according to default dirty stifled number of levels, obtains target fan and turn
Under speed, the corresponding heat exchanger leeward side range of pressure values of the dirty stifled grade of each indoor set.
A kind of dirty stifled detecting system of 12. air-conditionings based on single pressure sensor it is characterised in that include the first acquisition module and
Second acquisition module,
Described first acquisition module is used for obtaining the leeward side pressure value of dirt filtrating screen under the first rotation speed of fan, or the first blower fan turns
The leeward side pressure value of heat exchanger under speed；
Described second acquisition module is used for obtaining corresponding dirt filtrating screen according to the first rotation speed of fan and the leeward side pressure value of dirt filtrating screen
Dirty stifled grade, or the dirty stifled grade of corresponding indoor set is obtained according to the first rotation speed of fan and the leeward side pressure value of heat exchanger.
The dirty stifled detecting system of 13. air-conditionings based on single pressure sensor according to claim 12 is it is characterised in that also
Including control module, described control module is used for according to the different dirty stifled grades of dirt filtrating screen or the dirty stifled grade of different indoor sets
Air-conditioning is taken with different control modes；And/or for detect again after Preset Time the dirty stifled grade of the dust filtration net or
The dirty stifled grade of person's indoor set, when the dirty stifled grade of dirt filtrating screen or the dirty stifled grade of indoor set do not decline, lifts rotation speed of fan, right
Air quantity is compensated automatically.
The dirty stifled detecting system of 14. air-conditionings based on single pressure sensor according to claim 13 is it is characterised in that institute
State the first acquisition module to include：
It is arranged on the first pressure sensor between dirt filtrating screen and heat exchanger, for dirt filtrating screen under continuous acquisition first rotation speed of fan
The pressure value of leeward side；Or it is arranged on the second pressure sensor of heat exchanger leeward side, turn for continuous acquisition first blower fan
The pressure value of the lower heat exchanger leeward side of speed；
Computing unit, for continuous acquisition to multiple pressure value of dirt filtrating screen leeward side directly take average or remove maximum
The multiple pressures being all worth to the leeward side pressure value of dirt filtrating screen or the heat exchanger leeward side that continuous acquisition is arrived are taken after value, minimum of a value
Force value directly takes average or removes maximum, takes after minimum of a value and be all worth to the leeward side pressure value of heat exchanger.
15. according to the dirty stifled detecting system of the arbitrary described air-conditioning based on single pressure sensor of claim 12～14, and it is special
Levy and be, described first rotation speed of fan is current rotation speed of fan or target fan rotating speed.
The dirty stifled detecting system of 16. air-conditionings based on single pressure sensor according to claim 15 is it is characterised in that institute
State the second acquisition module to include：
Memory cell, for storing the dirty stifled grade of dirt filtrating screen pre-building and different rotation speed of fan, the leeward lateral pressure of dirt filtrating screen
First mapping table of value, or the dirty stifled grade of indoor set and different rotation speed of fan, the second of the leeward side pressure value of heat exchanger
Mapping table；Or the dirty stifled grade of dirt filtrating screen and the leeward side pressure of dirt filtrating screen under the target fan rotating speed pre-building for storage
3rd mapping table of force value, or under target fan rotating speed the dirty stifled grade of indoor set and the leeward side pressure value of heat exchanger
Four mapping tables；
Query unit, for inquiring about described first mapping table, obtains the leeward side pressure value of the dust filtration net in current blower fan
The dirty stifled grade of corresponding dirt filtrating screen under rotating speed, or inquiry the second mapping table, obtain the leeward side pressure value of described heat exchanger
The dirty stifled grade of corresponding indoor set under current rotation speed of fan；Or it is used for inquiring about described 3rd mapping table, obtain described
The dirty stifled grade of the leeward side pressure value of dirt filtrating screen corresponding dirt filtrating screen under target fan rotating speed, or inquiry the 4th corresponding relation
Table, or the dirty stifled grade of the leeward side pressure value of described heat exchanger corresponding indoor set under target fan rotating speed.
A kind of 17. air-conditionings are it is characterised in that the air-conditioning based on single pressure sensor including described in claim 12～16 is dirty
Stifled detecting system.
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| CN201610797870.5A CN106403167B (en) | 2016-08-31 | 2016-08-31 | The dirty stifled detection method of air-conditioning, system and air-conditioning based on single pressure sensor |
| PCT/CN2017/084605 WO2018040616A1 (en) | 2016-08-31 | 2017-05-16 | Method and system for detecting dirt blockage of air conditioner based on single pressure sensor, and air conditioner |
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|---|---|---|---|
| CN201610797870.5A CN106403167B (en) | 2016-08-31 | 2016-08-31 | The dirty stifled detection method of air-conditioning, system and air-conditioning based on single pressure sensor |
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