CN106500275A - The dust collection method and air-conditioner of the drainage screen of air-conditioner - Google Patents

The dust collection method and air-conditioner of the drainage screen of air-conditioner Download PDF

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Publication number
CN106500275A
CN106500275A CN201611049343.2A CN201611049343A CN106500275A CN 106500275 A CN106500275 A CN 106500275A CN 201611049343 A CN201611049343 A CN 201611049343A CN 106500275 A CN106500275 A CN 106500275A
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China
Prior art keywords
air
time
conditioner
real
difference
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CN201611049343.2A
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CN106500275B (en
Inventor
雷海涛
陈乾
刘树清
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/90—Cleaning of purification apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/39—Monitoring filter performance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/40—Pressure, e.g. wind pressure

Abstract

The present invention discloses a kind of dust collection method of filter screen of air conditioner and air-conditioner, and wherein, the dust collection method of filter screen of air conditioner includes：First pressure value P of the inlet side of current filter net is detected every time T0Second pressure value P with air side1, it is calculated the first difference PX；By the first difference PXWith the second difference P for prestoringAIt is compared, if the first difference PXWith the second difference PADifference △ PBIt is more than or equal to the first predetermined threshold value K1, and it is less than the second predetermined threshold value K2When, blower fan is inverted；Real-time detection real-time △ P are calculated when blower fan is invertedB, by real-time △ PBWith initial preset threshold k0Relatively；As real-time △ PBIt is more than initial preset threshold k0When, count real-time △ PBIt is more than initial preset threshold k0The first duration, if the first duration be equal to preset duration, blower fan reversion terminate；As real-time △ PBIt is less than or equal to initial preset threshold k0When, blower fan reversion terminates.Technical solution of the present invention can conveniently remove the dust of drainage screen.

Description

The dust collection method and air-conditioner of the drainage screen of air-conditioner
Technical field
The present invention relates to air-conditioning device technical field, more particularly to a kind of dust collection method of the drainage screen of air-conditioner and air-conditioning Device.
Background technology
The dedusting method of existing air-conditioner, mainly arranges airstrainer in air inlet to adsorb the ash in air Dirt.But after air-conditioner is using a period of time, thicker laying dust layer on drainage screen, can be formed, the laying dust on drainage screen can cause sky Adjust the refrigerating capacity of device to be greatly reduced, increase operating cost.Meanwhile, the easy breed bacteria of the laying dust on drainage screen, part dust is also Room air may be again introduced into circulating current, these all affect IAQ (indoor air quality).
Some air-conditioners employ the special dust arrester of loading to dispose dust, but these structures are independently from sky Device design is adjusted, all more or less there are some defects.Such as increasing hair brush structure carries out dedusting to drainage screen, makes the structure of air-conditioner Complicate, assemble and process all relatively difficult, increased production cost.
Content of the invention
The main object of the present invention is to provide a kind of dust collection method of the drainage screen of air-conditioner, it is intended to can be conveniently Remove the dust of drainage screen.
For achieving the above object, the dust collection method of filter screen of air conditioner proposed by the present invention, including：
For achieving the above object, the dust collection method of filter screen of air conditioner proposed by the present invention, including：
First pressure value P of the inlet side of current filter net is detected every time T0Second pressure value P with air side1, should First pressure value P0With second pressure value P1Difference for current filter net the first difference PX；
By first difference PXWith the second difference P for prestoringAIt is compared, if the first difference PXWith the second difference PA Difference △ PBIt is more than or equal to the first predetermined threshold value K1, and it is less than the second predetermined threshold value K2When, the blower fan of air-conditioner is inverted, Wind is made to blow to inlet side by the air side of drainage screen；
Real-time detection real-time △ P are calculated when blower fan is invertedB, by real-time △ PBWith initial preset threshold k0Relatively, described Initial preset threshold k0It is less than the first predetermined threshold value K1；
As real-time △ PBIt is more than initial preset threshold k0When, count real-time △ PBIt is more than initial preset threshold k0First when Long, if first duration is equal to preset duration, blower fan reversion terminates, and enters normal mode of operation；
As real-time △ PBIt is less than or equal to initial preset threshold k0When, blower fan reversion terminates, and enters normal mode of operation.
Alternatively, real-time Δ P is countedBIt is more than initial preset threshold k0The first duration, if when first duration is equal to default Long, then one-time dedusting fault cues are designated as, the cumulative number of dedusting fault cues is counted, if the cumulative number is more than or equal to default Number of times, then send hand-driven dust prompting.
Alternatively, after hand-driven dust prompting is sent, cumulative number is reset.
Alternatively, if real-time △ PBIt is more than or equal to the second predetermined threshold value K2When, the air-conditioner sends hand-driven dust prompting.
Alternatively, the K0With K1Meet relation：0.25K1≤K0≤0.5K1.
The present invention also provides a kind of air-conditioner, and the air-conditioner has heat exchanging air duct, is provided with blower fan in the heat exchanging air duct, the wind Road has air inlet, is provided with drainage screen in the air channel, the pressure reduction that the air-conditioner is also included controller and is connected with the controller Sensor,
The differential pressure pickup detects first pressure value P of the inlet side of current filter net every time T0With air side Two pressure value Ps1, and by first pressure value P0With second pressure value P1Send to the controller,
The controller is detected and judges first pressure value P0With second pressure value P1The first difference PXIf, the first difference PXWith the second difference P for prestoringADifference △ PBIt is more than or equal to the first predetermined threshold value K1, and it is less than the second predetermined threshold value K2 When, the blower fan reversion of air-conditioner is controlled, and makes wind inlet side be blowed to by the air side of drainage screen；
The controller real-time detection calculates real-time △ P when blower fan is invertedB, by real-time △ PBWith initial preset threshold value K0Relatively, the initial preset threshold k0It is less than the first predetermined threshold value K1, as real-time △ PBIt is more than initial preset threshold k0When, described Controller counts real-time △ PBIt is more than initial preset threshold k0The first duration, if first duration is equal to preset duration, blower fan is anti- Turn to terminate, enter normal mode of operation；
As real-time △ PBIt is less than or equal to initial preset threshold k0When, blower fan reversion terminates, and enters normal mode of operation.
Alternatively, the controller counts real-time Δ PBIt is more than initial preset threshold k0The first duration, if first duration Preset duration is equal to, is then designated as one-time dedusting fault cues,
The cumulative number of statistics dedusting fault cues, if the cumulative number is sent and is removed manually more than or equal to preset times Dirt is pointed out.
Alternatively, cumulative number is reset after hand-driven dust prompting is sent by the controller.
Alternatively, if the controller detects real-time △ PBIt is more than or equal to the second predetermined threshold value K2When, control air-conditioner Send hand-driven dust prompting.
Alternatively, the K0With K1Meet relation：0.25K1≤K0≤0.5K1.
Technical solution of the present invention judges the chocking-up degree of drainage screen by the pressure differential of detection drainage screen, and according to which Chocking-up degree, blower fan is inverted, and is made wind blow to inlet side by the air side of drainage screen, is blown out the dust of drainage screen, make drainage screen Chocking-up degree reduce, blower fan reversion run time in real-time monitoring is carried out to pressure value, when blower fan reversion mode can make The chocking-up degree of drainage screen is reduced to when meeting using standard, terminates at once to invert with save energy, when the mode of blower fan reversion The chocking-up degree of drainage screen can be made to be reduced to when meeting using standard, it is also desirable to terminate reversion, to prevent energy waste.By reality When monitor pressure value, energy waste can be prevented with energy saving.Thus, new dedusting structure need not be increased, you can convenient fast The dust of prompt removing drainage screen, reduces the fault rate of air-conditioner, energy saving, reduces cost.
Description of the drawings
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 Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the schematic diagram of one embodiment when air-conditioner blower fan of the present invention normally runs；
The schematic diagram of one embodiment when Fig. 2 is air-conditioner blower fan reversion operation of the present invention；
Fig. 3 is the schematic flow sheet of one embodiment of dust collection method of filter screen of air conditioner of the present invention；
Fig. 4 is the control flow chart of one embodiment of dust collection method of filter screen of air conditioner of the present invention.
Drawing reference numeral explanation：
Label Title Label Title
100 Air-conditioner 30 Drainage screen
10 Blower fan 50 Controller
100a Heat exchanging air duct 70 Differential pressure pickup
100b Air inlet 90 Preposition filter screen
20 Heat exchanger
The realization of the object of the invention, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
Accompanying drawing in below in conjunction with the embodiment of the present invention, to the embodiment of the present invention in technical scheme carry out clear, complete Site preparation is described, it is clear that described embodiment a part of embodiment only of the invention, rather than whole embodiments.Base Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made all its His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that institute's directional instruction (such as up, down, left, right, before and after ...) only uses in the embodiment of the present invention In explaining in the relative position relation under a certain particular pose (as shown in drawings) between each part, motion conditions etc., if should When particular pose changes, then directionality indicates also correspondingly to change therewith.
In the present invention, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should be interpreted broadly, For example, " fixation " can be fixedly connected, or be detachably connected, or integral；Can be mechanically connected, or Electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection or two of two element internals The interaction relationship of individual element, unless otherwise clearly restriction.For the ordinary skill in the art, can basis Concrete condition understands above-mentioned term concrete meaning in the present invention.
In addition, in the present invention such as relating to the description of " first ", " second " etc. be only used for describe purpose, and it is not intended that Indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", The feature of " second " can be expressed or implicitly include at least one this feature.In addition, the technical side between each embodiment Case can be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme Will be understood that the combination of this technical scheme is not present when appearance is conflicting or cannot realize, also not in the guarantor of application claims Within the scope of shield.
Referring to figs. 1 to Fig. 4, the present invention proposes a kind of dust collection method of the drainage screen 30 of air-conditioner 100, including：
Step S10：First pressure value P of the inlet side of current filter net 30 is detected every time T0With air side second Pressure value P1, first pressure value P0With second pressure value P1Difference for current filter net 30 the first difference PX.
Each one interval time T a pressure detecting is carried out to the drainage screen 30 just, 30 congestion of drainage screen can be prevented.When Front drainage screen 30 can adopt G4 filter screens, the G4 filter screens to be used for air filtering in the air channel of air-conditioner 100.Can be in air channel One preposition filter screen 90 is first set at air inlet 100b, and the preposition filter screen 90 can be G2 filter screens, and the filtration hole of its G2 filter screen is more than G4 filter screens.Current filter net 30, refers to the drainage screen after work for a period of time 30.By testing the air intake of current filter net 30 First pressure value P of side0Second pressure value P with air side1, can obtain its inlet side and air side drainage screen 30 One difference PX.
Step S20：By first difference PXWith the second difference P for prestoringAIt is compared, if the first difference PXWith Second difference PADifference △ PBIt is more than or equal to the first predetermined threshold value K1, and it is less than the second predetermined threshold value K2When, by air-conditioner 100 blower fan 10 is inverted, and makes wind blow to inlet side by the air side of drainage screen 30.
The second difference P for prestoringAFor air-conditioner 100 drainage screen 30 when using first time, inlet side and go out The second difference P between wind sideA, without the drainage screen 30 of the air-conditioner 100 for using, between its inlet side and air side The second difference PAValue also smaller.Second difference PACan measured in advance, in storing to controller 50.By calculating first Difference PXWith the second difference PADifference △ PBThe chocking-up degree of the drainage screen 30, △ P can be learntBValue bigger, this explanation should The stopping state of drainage screen 30 is more serious, as △ PBValue be more than or equal to the first predetermined threshold value K1, you can learn the drainage screen 30 Chocking-up degree had influence on the operation of air-conditioner 100, therefore, dedusting to be carried out to the drainage screen 30.The K1Value can basis Different types of blower fan 10, different environment and different drainage screens 30 enter line translation.The dust ratio of the inlet side of drainage screen 30 The dust of air side is more, blower fan 10 is inverted, quickly can be blown away sand and dust, be reached the purpose of clean filtering net 30.And it is such Arrange and also avoid increasing unnecessary cleaning device, the installing space that saves inside air-conditioner 100, reduces cost.Pre- less than second If threshold k2, K2△ P when judging to enter hand-driven dust for air-conditioner 100BMinimum differntial pressure.As △ PBPreset more than or equal to second Threshold k2When, it was demonstrated that the chocking-up degree of the drainage screen 30 is very high, needs to carry out hand-driven dust.Therefore, in K1≤△PB＜ K2, then Judge to carry out dedusting by way of blower fan 10 is inverted.
Step S30：Real-time detection real-time △ P are calculated when blower fan is invertedB, by real-time △ PBWith initial preset threshold k0 Relatively, the initial preset threshold k0It is less than the first predetermined threshold value K1；
Step S31：As real-time △ PBIt is more than initial preset threshold k0When, count real-time △ PBIt is more than initial preset threshold k0 The first duration, if first duration be equal to preset duration, blower fan reversion terminate, enter normal mode of operation；
When blower fan 10 is inverted, 100 cisco unity malfunction of air-conditioner, therefore, the time is unsuitable long, therefore can arrange reversion Preset duration t, can be on the premise of effectively dust be understood, save energy, it is to avoid energy waste.In 10 Umklapp process of blower fan, And calculate real-time △ PB, by real-time △ PBWith the second predetermined threshold value K0Relatively.Second predetermined threshold value K0Value be less than K1Value because K1It is △ P when system judges to enter automatic dust removingBMinimum differntial pressure, K0It is △ P when system judges to exit automatic dust removingBMinimum pressure Difference, 0≤K0＜ K1, further preferably it is set to：The K0With the K1Ratio range be：0.25K1≤K0≤0.5K1.
When blower fan reversion just starts, real-time △ PBNecessarily it is more than K0, now, count real-time △ PBNecessarily it is more than K0The first duration, if first duration be equal to preset duration, it was demonstrated that blower fan reversion Preset Time in, preferably do not complete Dedusting task, at this time, it may be necessary to blower fan reversion terminates, enters normal mode of operation, prevents from excessively expending the energy.
Step S32：As real-time △ PBIt is less than or equal to initial preset threshold k0When, the reversion of blower fan 10 terminates, and enters normal work Pattern.
When detecting real-time △ PB≤K0When, that is, the effect for inverting dedusting in preset duration t inner blower reaches default effect Really, exit blower fan 10 at once to invert, enter into normal working condition, prevent energy waste.
Technical solution of the present invention judges the chocking-up degree of drainage screen 30, and root by the pressure differential of detection drainage screen 30 According to its chocking-up degree, blower fan 10 is inverted, make wind inlet side be blowed to by the air side of drainage screen 30, blow out the ash of drainage screen 30 Dirt, reduces the chocking-up degree of drainage screen 30, carries out real-time monitoring to pressure value, work as blower fan in the reversion run time of blower fan 10 The modes of 10 reversions can be such that the chocking-up degree of drainage screen 30 is reduced to when meeting using standard, terminate at once to invert to save energy Source, when the mode of the reversion of blower fan 10 can make the chocking-up degree of drainage screen 30 be reduced to meet using standard when, it is also desirable to terminate anti- Turn, to prevent energy waste.By monitoring pressure in real time value, energy waste can be prevented with energy saving.Thus, need not increase Plus new dedusting structure, you can the dust of drainage screen 30 is conveniently removed, reduces the fault rate of air-conditioner 100, save energy Source, reduces cost.
Further, real-time Δ P is countedBIt is more than initial preset threshold k0The first duration, if first duration be equal to default Duration, then be designated as one-time dedusting fault cues, counts the cumulative number of dedusting fault cues, if the cumulative number is more than or equal to pre- If number of times, then send hand-driven dust prompting.
The reason for sending dedusting fault cues possibility is, in reversing time t of the reversion of blower fan 10, it is difficult to drainage screen 30 carry out dedusting to meet operation standard.It is thus desirable to running several reversing times t more.But, run the number of times of reversing time t More, it was demonstrated that the dedusting of the drainage screen 30 is more difficult.Therefore, preset times n are pre-set in controller 50, when inverted between When the number of run of t is less than preset times n, it was demonstrated that multiple reversing time t.And if more than preset times n, this proves Dedusting is difficult, by the reversion of blower fan 10 cannot effectively dedusting, thus, send hand-driven dust and point out, notify operator to the mistake Filter screen 30 carries out hand-driven dust.
Further, after hand-driven dust prompting is sent, cumulative number is reset.After hand-driven dust, drainage screen meets to be made With demand, cumulative number can be reset by the controller of air-conditioner, and the number of times that accumulates can be avoided to judge the detection of next stage Produce impact,
Further, with reference to Fig. 4, if the first difference PXWith the second difference PADifference △ PBPreset more than or equal to first Threshold k1, and difference △ PBIt is more than or equal to the second predetermined threshold value K2When, the air-conditioner 100 sends hand-driven dust prompting.
Second predetermined threshold value K2It is more than the first predetermined threshold value K1, K2△ P when judging to enter hand-driven dust for air-conditioner 100BMost Small pressure difference.As △ PBIt is more than or equal to the second predetermined threshold value K2When, it was demonstrated that the chocking-up degree of the drainage screen 30 is very high, needs to carry out Hand-driven dust.
Further, with reference to Fig. 4, in first pressure value P of the inlet side of detection current filter net 300With air side Two pressure value Ps1The step of before, also include, arrange detection dust T interval time.That is, whenever air-conditioner 100 carries out first After the detection of secondary dust, dust detection is carried out in interval time again after T, it is ensured that the clean-up performance of drainage screen 30 is consistently achieved and used Demand.
Referring to figs. 1 to Fig. 3, the present invention also provides a kind of air-conditioner 100, and the air-conditioner 100 has heat exchanging air duct 100a, should Blower fan 10 is provided with heat exchanging air duct 100a, and the air channel has air inlet 100b, is provided with drainage screen 30 in the air channel, the air-conditioner 100 differential pressure pickups 70 for also including controller 50 and being connected with the controller 50.Heat exchanger 20 is additionally provided with the air channel, is exchanged heat Device 20 is located between drainage screen 30 and blower fan 10, and certainly, the heat exchanger 20 can also be located at blower fan 10 away from the side of drainage screen 30.
The differential pressure pickup 70 detects first pressure value P of the inlet side of current filter net 30 every time T0And air side Second pressure value P1, and by first pressure value P0With second pressure value P1Send to the controller 50.
Each one interval time T a pressure detecting is carried out to the drainage screen 30 just, 30 congestion of drainage screen can be prevented.When Front drainage screen 30 can adopt G4 filter screens, the G4 filter screens to be used for air filtering in the air channel of air-conditioner 100.Can be in air channel One preposition filter screen 90 is first set at air inlet 100b, and the preposition filter screen 90 can be G2 filter screens, and the filtration hole of its G2 filter screen is more than G4 filter screens.Current filter net 30, refers to the drainage screen after work for a period of time 30.By testing the air intake of current filter net 30 First pressure value P of side0Second pressure value P with air side1, can obtain its inlet side and air side drainage screen 30 One difference PX.
The controller 50 is according to first pressure value P0With second pressure value P1Mathematic interpolation current filter net 30 One difference PX, and by first difference PXWith the second difference P for prestoringAIt is compared, if the first difference PXPoor with second Value PADifference △ PBIt is more than or equal to the first predetermined threshold value K1, and it is less than the second predetermined threshold value K2When, by the wind of air-conditioner 100 Machine 10 is inverted, and makes wind blow to inlet side by the air side of drainage screen 30.
The second difference P for prestoringAFor air-conditioner 100 drainage screen 30 when using first time, inlet side and go out The second difference P between wind sideA, without the drainage screen 30 of the air-conditioner 100 for using, between its inlet side and air side The second difference PAValue also smaller.Second difference PACan measured in advance, in storing to controller 50.By calculating first Difference PXWith the second difference PADifference △ PBThe chocking-up degree of the drainage screen 30, △ P can be learntBValue bigger, this explanation should The stopping state of drainage screen 30 is more serious, as △ PBValue be more than or equal to the first predetermined threshold value K1, you can learn the drainage screen 30 Chocking-up degree had influence on the operation of air-conditioner 100, therefore, dedusting to be carried out to the drainage screen 30.The K1Value can basis Different types of blower fan 10, different environment and different drainage screens 30 enter line translation.The dust ratio of the inlet side of drainage screen 30 The dust of air side is more, blower fan 10 is inverted, quickly can be blown away sand and dust, be reached the purpose of clean filtering net 30.And it is such Arrange and also avoid increasing unnecessary cleaning device, the installing space that saves inside air-conditioner 100, reduces cost.Pre- less than second If threshold k2, K2△ P when judging to enter hand-driven dust for air-conditioner 100BMinimum differntial pressure.As △ PBPreset more than or equal to second Threshold k2When, it was demonstrated that the chocking-up degree of the drainage screen 30 is very high, needs to carry out hand-driven dust.Therefore, in K1≤△PB＜ K2, then Judge to carry out dedusting by way of blower fan 10 is inverted.
The controller 50 real-time detection calculates real-time △ P when blower fan 10 is invertedB, by real-time △ PBWith initial preset Threshold k0Relatively, the initial preset threshold k0It is less than the first predetermined threshold value K1, as real-time △ PBIt is more than initial preset threshold k0When, The controller counts real-time △ PBIt is more than initial preset threshold k0The first duration, if first duration be equal to preset duration, wind The reversion of machine 10 terminates, and enters normal mode of operation；When blower fan 10 is inverted, 100 cisco unity malfunction of air-conditioner, therefore, the time is not Preferably long, therefore preset duration t of reversion can be set, can be on the premise of effectively dust be understood, save energy, it is to avoid energy wave Take.In 10 Umklapp process of blower fan, and calculate real-time △ PB, by real-time △ PBWith the second predetermined threshold value K0Relatively.Second default threshold Value K0Value be less than K1Value because K1It is △ P when system judges to enter automatic dust removingBMinimum differntial pressure, K0It is that system judges to move back △ P when going out automatic dust removingBMinimum differntial pressure, 0≤K0＜ K1, further preferably it is set to：The K0With the K1Ratio range be： 0.25K1≤K0≤0.5K1.
When blower fan reversion just starts, real-time △ PBNecessarily it is more than K0, now, count real-time △ PBNecessarily it is more than K0The first duration, if first duration be equal to preset duration, it was demonstrated that blower fan reversion Preset Time in, preferably do not complete Dedusting task, at this time, it may be necessary to blower fan reversion terminates, enters normal mode of operation, prevents from excessively expending the energy.
As real-time △ PBIt is less than or equal to initial preset threshold k0When, the reversion of blower fan 10 terminates, and enters normal mode of operation.When Detect real-time △ PB≤K0When, that is, the effect for inverting dedusting in preset duration t inner blower reaches default effect, exit at once Blower fan 10 is inverted, and is entered into normal working condition, is prevented energy waste.
Technical solution of the present invention judges the chocking-up degree of drainage screen 30, and root by the pressure differential of detection drainage screen 30 According to its chocking-up degree, blower fan 10 is inverted, make wind inlet side be blowed to by the air side of drainage screen 30, blow out the ash of drainage screen 30 Dirt, reduces the chocking-up degree of drainage screen 30, carries out real-time monitoring to pressure value, work as blower fan in the reversion run time of blower fan 10 The modes of 10 reversions can be such that the chocking-up degree of drainage screen 30 is reduced to when meeting using standard, terminate at once to invert to save energy Source, when the mode of the reversion of blower fan 10 can make the chocking-up degree of drainage screen 30 be reduced to meet using standard when, it is also desirable to terminate anti- Turn, to prevent energy waste.By monitoring pressure in real time value, energy waste can be prevented with energy saving.Thus, need not increase Plus new dedusting structure, you can the dust of drainage screen 30 is conveniently removed, reduces the fault rate of air-conditioner 100, save energy Source, reduces cost.
With reference to Fig. 4, further, institute's controller counts real-time Δ PBIt is more than initial preset threshold k0The first duration, If first duration is equal to preset duration, one-time dedusting fault cues are designated as,
The cumulative number of statistics dedusting fault cues, if the cumulative number is sent and is removed manually more than or equal to preset times Dirt is pointed out.
The reason for sending dedusting fault cues possibility is, in reversing time t of a reversion of blower fan 10, it is difficult to drainage screen 30 carry out dedusting to meet operation standard.It is thus desirable to running several reversing times t more.But, run the number of times of reversing time t More, it was demonstrated that the dedusting of the drainage screen 30 is more difficult.Therefore, preset times n are pre-set in controller 50, when inverted between When the number of run of t is less than preset times n, it was demonstrated that multiple reversing time t.And if more than preset times n, this proves Dedusting is difficult, by the reversion of blower fan 10 cannot effectively dedusting, thus, send hand-driven dust and point out, notify operator to the mistake Filter screen 30 carries out hand-driven dust.
Further, cumulative number is reset after hand-driven dust prompting is sent by the controller.After hand-driven dust, mistake Filter screen meets use demand, and cumulative number can be reset by the controller of air-conditioner, can avoid the number of times that accumulates to next stage Detection judge produce impact.
With reference to Fig. 4, further, if the controller 50 detects real-time △ PBIt is more than or equal to the second predetermined threshold value K2 When, control air-conditioner 100 sends hand-driven dust prompting.
Second predetermined threshold value K2It is more than the first predetermined threshold value K1, K2△ P when judging to enter hand-driven dust for air-conditioner 100BMost Small pressure difference.As △ PBIt is more than or equal to the second predetermined threshold value K2When, it was demonstrated that the chocking-up degree of the drainage screen 30 is very high, needs to carry out Hand-driven dust.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, every at this Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly In the scope of patent protection that other related technical fields are included in the present invention.

Claims (10)

1. a kind of dust collection method of the drainage screen of air-conditioner, it is characterised in that include：
First pressure value P of the inlet side of current filter net is detected every time T0Second pressure value P with air side1, this first Pressure value P0With second pressure value P1Difference for current filter net the first difference PX；
By first difference PXWith the second difference P for prestoringAIt is compared, if the first difference PXWith the second difference PADifference △PBIt is more than or equal to the first predetermined threshold value K1, and it is less than the second predetermined threshold value K2When, the blower fan of air-conditioner is inverted, make wind by The air side of drainage screen blows to inlet side；
Real-time detection real-time △ P are calculated when blower fan is invertedB, by real-time △ PBWith initial preset threshold k0Relatively, described initial Predetermined threshold value K0It is less than the first predetermined threshold value K1；
As real-time △ PBIt is more than initial preset threshold k0When, count real-time △ PBIt is more than initial preset threshold k0The first duration, if First duration is equal to preset duration, and blower fan reversion terminates, and enters normal mode of operation；
As real-time △ PBIt is less than or equal to initial preset threshold k0When, blower fan reversion terminates, and enters normal mode of operation.
2. the dust collection method of the drainage screen of air-conditioner as claimed in claim 1, it is characterised in that the real-time Δ P of statisticsBMore than just Beginning predetermined threshold value K0The first duration, if first duration be equal to preset duration, be designated as one-time dedusting fault cues, statistics is removed The cumulative number of dirt fault cues, if the cumulative number is more than or equal to preset times, sends hand-driven dust prompting.
3. the dust collection method of the drainage screen of air-conditioner as claimed in claim 2, it is characterised in that sending hand-driven dust prompting Afterwards, cumulative number is reset.
4. the dust collection method of the drainage screen of air-conditioner as claimed in claim 1, it is characterised in that if △ P in real timeBIt is more than or waits In the second predetermined threshold value K2When, the air-conditioner sends hand-driven dust prompting.
5. the dust collection method of the drainage screen of air-conditioner as claimed in claim 1, it is characterised in that the K0With K1Meet relation： 0.25K1≤K0≤0.5K1.
6. a kind of air-conditioner, it is characterised in that the air-conditioner has heat exchanging air duct, is provided with blower fan in the heat exchanging air duct, the air channel There is air inlet, in the air channel, be provided with drainage screen, the pressure reduction biography that the air-conditioner is also included controller and is connected with the controller Sensor,
The differential pressure pickup detects first pressure value P of the inlet side of current filter net every time T0Press with the second of air side Force value P1, and by first pressure value P0With second pressure value P1Send to the controller,
The controller is detected and judges first pressure value P0With second pressure value P1The first difference PXIf, the first difference PXWith pre- The second difference P for first storingADifference △ PBIt is more than or equal to the first predetermined threshold value K1, and it is less than the second predetermined threshold value K2When, control The blower fan reversion of air-conditioner processed, makes wind blow to inlet side by the air side of drainage screen；
The controller real-time detection calculates real-time △ P when blower fan is invertedB, by real-time △ PBWith initial preset threshold k0Than Compared with the initial preset threshold k0It is less than the first predetermined threshold value K1, as real-time △ PBIt is more than initial preset threshold k0When, the control Device processed counts real-time △ PBIt is more than initial preset threshold k0The first duration, if first duration be equal to preset duration, blower fan invert Terminate, enter normal mode of operation；
As real-time △ PBIt is less than or equal to initial preset threshold k0When, blower fan reversion terminates, and enters normal mode of operation.
7. air-conditioner as claimed in claim 6, it is characterised in that the controller counts real-time Δ PBIt is more than initial preset threshold Value K0The first duration, if first duration be equal to preset duration, be designated as one-time dedusting fault cues,
The cumulative number of statistics dedusting fault cues, if the cumulative number sends hand-driven dust and carries more than or equal to preset times Show.
8. air-conditioner as claimed in claim 7, it is characterised in that
Cumulative number is reset after hand-driven dust prompting is sent by the controller.
9. air-conditioner as claimed in claim 6, it is characterised in that if the controller detects real-time △ PBIt is more than or equal to Second predetermined threshold value K2When, control air-conditioner sends hand-driven dust prompting.
10. air-conditioner as claimed in claim 6, it is characterised in that the K0With K1Meet relation：0.25K1≤K0≤0.5K1.
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