CN101256008B - Indoor set of air-conditioner with filtering net dust collector - Google Patents

Indoor set of air-conditioner with filtering net dust collector Download PDF

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Publication number
CN101256008B
CN101256008B CN2007100795812A CN200710079581A CN101256008B CN 101256008 B CN101256008 B CN 101256008B CN 2007100795812 A CN2007100795812 A CN 2007100795812A CN 200710079581 A CN200710079581 A CN 200710079581A CN 101256008 B CN101256008 B CN 101256008B
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China
Prior art keywords
screen pack
indoor
air conditioner
dust collector
pipe
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CN2007100795812A
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Chinese (zh)
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CN101256008A (en
Inventor
楚人震
张守信
付裕
于兆志
刘建刚
杨挺
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海尔集团公司
青岛海尔空调器有限总公司
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Priority to CN2007100795812A priority Critical patent/CN101256008B/en
Publication of CN101256008A publication Critical patent/CN101256008A/en
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Publication of CN101256008B publication Critical patent/CN101256008B/en

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Abstract

The invention pertains to air conditioner field, and specifically is an air conditioner indoor set with a filter screen dust removing device, comprising a housing, an air inlet and an air outlet disposed on the housing, a circular heat exchanger disposed in the housing, a fan is disposed at the circulating center of the circular heat exchanger, an air outlet of the fan communicating with the air outlet of the housing, and a dust removing filter screen disposed at the outer side of the circular heat exchanger; wherein a rolling shaft activating the filter screen is disposed at the two ends of the filter screen; a dust absorption pipe formed of a helical groove pipe and an axial straight groove pipe sleeving each other is disposed near to the filter screen, a hose communicating with the dust absorption pipe is disposed at the terminal of the straight groove pipe of the dust absorption pipe, and an electric motor rotating the helical groove pipe is disposed at the terminal of the helicalgroove pipe. An inhalation pore is formed by a straight groove pipe and a helical groove pipe sleeving each other with airtightness, wind power is centralized, and dust is removed with high efficiency; filter screen dust is removed roundly in condition that the indoor set outer cover is not opened.

Description

Indoor apparatus of air conditioner with filtering net dust collector

Technical field

The present invention relates to a kind of dust arrester, particularly a kind of indoor apparatus of air conditioner with filtering net dust collector.

Background technology

Existing indoor apparatus of air conditioner as shown in Figure 1, 2, have casing 4, above casing 4 and the front be provided with air inlet 8, the inclined-plane, front side, bottom of casing is provided with the air outlet 9 with wind deflector 3, be provided with the heat exchanger 6 that annular is provided with in the casing, in described circular heat exchanger 6 be provided with blower fan 7 around the center, the exhaust outlet of blower fan 7 connects the air outlet 9 of casing 4.For preventing dust intrusion internal body, between casing, be provided with air cleaner 5 at heat exchanger 6, suck room airs by blower fan 7, institute's inhaled air and heat exchanger 6 carry out heat exchange, become cold wind or hot blast, are blown out to indoor by air outlet 9.Swimming in airborne dust is removed by the air cleaner 5 that is arranged between air inlet 8 and the heat exchanger 6.The air cleaner dismounting is mounted freely on the filter frame to allow to remove adhered dust.But user quite a lot often ignorance removes the dust of institute's enrichment on the air cleaner 5, causes the air-conditioning effect bad, wastes electric energy.Even notice and will in time clear up wall indoor unit, but since wall indoor unit generally all the highland hang on the wall, it is very inconvenient to clear up.Thereby proposition need not can be removed the indoor apparatus of air conditioner attached to the dust on the air cleaner automatically from filter frame dismounting air cleaner.

Patent documentation 200510120265.6 provides a kind of air conditioner, it has indoor unit, this indoor unit contains heat exchanger in main body, with to the indoor fan that blows out by the air after this heat exchanger heat exchange, this air-conditioning is characterized in that possessing: be installed in the air cleaner on the aforementioned body of above-mentioned heat exchanger upstream side, have with the opposed suction inlet of this air cleaner in order to suck suction nozzle attached to the free sliding of the dust on the air cleaner, drive source via this suction nozzle of drive mechanism, be communicated with and attract to discharge the exhaust apparatus of dust with said suction nozzle with air, with the communication apparatus that is communicated with this exhaust apparatus and said suction nozzle.

Described nozzle structure as shown in Figure 3, suction nozzle 14, form lengthwise and pars intermedia bending, at the slit-shaped suction inlet that is provided with Rack towards air cleaner one side.In addition, accommodating along the film shape band 19 of the Rack of suction inlet slip and formation ring-type in suction nozzle 14 inside, with the attraction hole 19a that forms Rack on 19, simultaneously, in order to improve attached to the brush 21 of the removal efficient of the dust on the air cleaner 12 with attract the adjacent setting of hole 19a.Attract hole 19a to be formed on the position that overlaps with suction inlet, its length setting be for example the suction inlet total length 1/16.With 19 its formations be utilize the stepper motor 20 be fixed on the suction nozzle 14 up and down any direction freely drive.As mentioned above, be with 19 to form ring-types, but, also can adopt spool etc. is set will be with 19 formations that twine thereon.As seen from the figure, suction nozzle 14 is box bodys of a lengthwise and pars intermedia bending, be provided with the slit-shaped suction inlet of Rack towards air cleaner one side, for making air-breathing concentrating, one is provided with the film shape band 19 that attracts hole 19a is affixed in the slit-shaped suction inlet in movably, air is concentrated on attract hole 19a, to increase suction.But, how to guarantee the sealing between flexible movably film shape band 19 and the rigidity box body, be a great problem of this device performance quality.In fact, the dust exhaust apparatus that this patent provided during work, attracts the suction of hole 19a very little because sealing problem is failed fine solution, and dust suction speed is very slow.

How a kind of efficient dust exhaust apparatus is provided is the difficult problem of the solution of current air conditioner industry effort.

Summary of the invention

Technical problem to be solved by this invention is at the above-mentioned deficiency of prior art, and to provide a kind of dust collection efficiency the high indoor apparatus of air conditioner with filtering net dust collector.

Realize that technical scheme of the present invention is as follows:

A kind of indoor apparatus of air conditioner with filtering net dust collector, comprise, casing, be provided with air inlet and air outlet in casing, be provided with circular heat exchanger in the casing, be provided with blower fan in described circular heat exchanger around the center, the exhaust outlet of blower fan connects the air outlet of casing, is provided with the dust removal and filtration net in the outside of described circular heat exchanger; Wherein:

Be provided with the roller bearing that the drive screen pack moves in the two ends of described filter screen;

One by sheathed mutually spiral grooved tube and the axially close screen pack setting of sweep-up pipe of straight trough pipe, and the end of the straight trough pipe of described sweep-up pipe is provided with the flexible pipe that connects dust catcher, and the end of described spiral grooved tube is provided with and makes the spiral grooved tube motor rotating.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: described dust removal and filtration net is flexible screen pack; Be provided with the roller bearing that the flexible screen pack of drive moves in the two ends of described flexible screen pack.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: the both sides of described flexible screen pack, be provided with evenly distributed through hole, one of them the two ends of roller bearing of being located at flexible screen pack two ends are provided with ratchet, and connecting a drive motors, the evenly distributed through hole in the ratchet of described ratchet and the both sides of described flexible screen pack adapts.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: described flexible screen pack fixing also is wound on the roller bearing at described two ends.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: below described flexible screen pack, be provided with a plurality of backing rolls.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: described dust removal and filtration net is the rigid screen pack with rolling door type of support frame; Be provided with in the two ends of the rigid screen pack of described rolling door type with support frame and drive the roller bearing that screen pack moves.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: described rigid screen pack with rolling door type of support frame is made of a plurality of rigid frameworks that are hinged and the screen pack that is layed on the described rigid framework.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: the described roller bearing of being located at the rigid screen pack two ends of rolling door type with support frame, the two ends of one of them are provided with ratchet, and connect a drive motors, the ratchet of described ratchet and describedly have a support frame fit.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: described rigid screen pack with rolling door type of support frame is fixed and is wound on the roller bearing at described two ends.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: below the rigid screen pack of described rolling door type with support frame, be provided with a plurality of backing rolls.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: the described sheathed mutually spiral grooved tube and the sweep-up pipe of axial straight trough pipe, spiral grooved tube wherein is sheathed on the outside of straight trough pipe.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: the helicla flute in described spiral grooved tube is provided with bristle.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: the length of described sweep-up pipe is a bit larger tham the width of described screen pack, is 800mm at the width of screen pack, and the spiral grooved tube diameter is under the condition of 40mm, and the described spiral fluted number of turns is the 1-4 circle.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: the both sides in indoor apparatus of air conditioner are provided with fixed frame, and described sweep-up pipe is fixedly arranged on the described fixed frame by the support at two ends.

Described indoor apparatus of air conditioner with filtering net dust collector, wherein: described spiral grooved tube cooperates for air-tightness each other with described straight trough pipe.

The invention has the advantages that: adopt air-tightness sheathed straight trough pipe and spiral grooved tube mutually, straight trough and helicla flute intersection form suction hole, and can be according to the power designs of dust catcher suitable suction hole size (being groove width) makes wind concentration, can high-effective dust-removing; By the rotating screw barrel air suction opening is laterally moved, realize vertically moving of screen pack, can under the condition of not opening the indoor set outer cover, carry out the comprehensive dedusting of screen pack by the moving filter net.

For architectural feature of the present invention and effect thereof are had further understanding, enumerate specific embodiment now and be described with reference to the accompanying drawings as follows.

Description of drawings

Fig. 1 is the profile schematic diagram of existing indoor apparatus of air conditioner.

Fig. 2 is the schematic cross-section of existing indoor apparatus of air conditioner.

Fig. 3 is the suction nozzle schematic diagram of existing indoor apparatus of air conditioner dust arrester.

Fig. 4 is the profile of the embodiment one of the indoor apparatus of air conditioner of the present invention with filtering net dust collector.

Fig. 5 is the scheme of installation of sweep-up pipe of the present invention in the indoor apparatus of air conditioner of embodiment one.

Fig. 6 is the profile of the embodiment two of the indoor apparatus of air conditioner of the present invention with filtering net dust collector.

Fig. 7 is the scheme of installation of sweep-up pipe of the present invention in the indoor apparatus of air conditioner of embodiment two.

Fig. 8 is the exploded view of sweep-up pipe of the present invention.

Fig. 9 is the installation diagram of sweep-up pipe of the present invention.

Figure 10 is air suction opening formation figure of the present invention.

The specific embodiment

Embodiment one

Shown in Figure 4 is a kind of embodiment profile with indoor apparatus of air conditioner of filtering net dust collector provided by the present invention, as seen from the figure, described indoor apparatus of air conditioner with filtering net dust collector comprises, casing 10, be provided with air inlet 11 and air outlet 12 in casing 10, be provided with circular heat exchanger 13 in the casing 10, be provided with blower fan 15 in described circular heat exchanger 13 around the center, the exhaust outlet of blower fan 15 connects the air outlet 12 of casing 10, be provided with wind deflector 16 in air outlet, be provided with dust removal and filtration net 17 in the outside of described circular heat exchanger 13; Dust removal and filtration net 17 of the present invention is the rigid screen packs with rolling door type of support frame; Be provided with the roller bearing 18 that the rigid screen pack that drives the rolling door type with support frame moves in the two ends of the rigid screen pack of described rolling door type with support frame; Described rigid screen pack with rolling door type of support frame is made of a plurality of rigid frameworks that are hinged 171 and the screen pack 172 that is layed on the described rigid framework.

One of them the two ends of roller bearing 18 of being located at rigid screen pack two ends are provided with ratchet 181, and connect a drive motors (not shown), the ratchet of described ratchet 181 and described both side ends fit with support frame 171.Drive motors drives roller bearing 18 rotations that are provided with ratchet, and the rigid screen pack that drives the rolling door type with support frame by the ratchet 181 of being located at the roller bearing two ends vertically moves.

Because heat exchanger 13 be an annular, so below the rigid screen pack 17 of described rolling door type with support frame, be provided with a plurality of backing rolls 25.Be bending so that have the rigid screen pack 17 of the rolling door type of support frame.

Embodiment two

Shown in Figure 6 is the profile that another kind provided by the present invention has the indoor apparatus of air conditioner of filtering net dust collector, as seen from the figure, described indoor apparatus of air conditioner with filtering net dust collector comprises, casing 10, be provided with air inlet 11 and air outlet 12 in casing 10, be provided with circular heat exchanger 13 in the casing 10, be provided with blower fan 15 in described circular heat exchanger 13 around the center, the exhaust outlet of blower fan 15 connects the air outlet 12 of casing 10, be provided with wind deflector 16 in air outlet, be provided with dust removal and filtration net 47 in the outside of described circular heat exchanger 13; The described dust removal and filtration net 47 of present embodiment is flexible screen packs; Be provided with the roller bearing 48 that the flexible screen pack of drive moves in the two ends of described flexible screen pack 47; The both sides of described flexible screen pack, be provided with evenly distributed through hole 471, one of them the two ends of roller bearing 48 of being located at flexible screen pack two ends are provided with ratchet 481, and connect a drive motors, and the evenly distributed through hole 471 in the ratchet of described ratchet and the both sides of described flexible screen pack adapts.Drive motors drives roller bearing 48 rotations that are provided with ratchet, drives flexible screen pack by the ratchet of being located at the roller bearing two ends and moves axially.

Because heat exchanger 13 is an annular, therefore below described flexible screen pack 47, be provided with a plurality of backing rolls 45.So that flexible screen pack 47 is bending.

Embodiment three

Present embodiment is that with the difference of embodiment two structure of flexible screen pack is different.Embodiment two described flexible screen packs are a circular filter net, are provided with through hole in the both sides of screen pack, and wherein the two ends of a roller bearing 48 are provided with ratchet, the through hole interlock mutually of the ratchet of described ratchet and the both sides of described flexible screen pack.Drive motors drives roller bearing 48 rotations that are provided with ratchet, drives flexible screen pack by ratchet and moves axially.Because heat exchanger 13 is an annular, therefore below described flexible screen pack 47, be provided with a plurality of backing rolls 45.So that flexible screen pack 17 is bending.

Present embodiment is fixed described flexible screen pack and be wound on the roller bearing at described two ends for reducing the ratchet at backing roll and roller bearing two ends.

Fig. 8, Fig. 9 are the exploded view and the installation diagrams of sweep-up pipe of the present invention.As seen from the figure, sweep-up pipe of the present invention is by sheathed mutually spiral grooved tube 31 and axially sweep-up pipe 30 close screen packs 17 settings of straight trough pipe 32, the end of the straight trough pipe 32 of described sweep-up pipe 30 is provided with the flexible pipe 33 that connects dust catcher, and the end of described spiral grooved tube 31 is provided with and makes spiral grooved tube motor rotating 34.Wherein said spiral grooved tube 31 is sheathed on the outside of straight trough pipe 32.And spiral grooved tube cooperates for air-tightness each other with described straight trough pipe.Described air-tightness cooperates and is meant that the two can rotate after sheathed, but except the air suction opening 36 of helicla flute and the formation of straight trough intersection, can not leak gas.

Be to improve pick-up performance, be provided with bristle 35 in the helicla flute of described spiral grooved tube.The rotating screw pipe plays brush with the bristle 35 of screen pack 17 or 47 contact positions, and the dust on screen pack 17 or 47 is brushed down, and by the suction hole on the sweep-up pipe 30 dust is siphoned away again.Therefore the straight trough on the straight trough pipe 32 should be over against screen pack 17 or 47.

About determining of the helicla flute number of turns:

It is generally acknowledged and inhale Kong Yuexiao, quantity is few more, and its pick-up performance is good more.Therefore an air suction opening is adopted in suggestion, promptly no matter spiral grooved tube rotate to assorted petty till, helicla flute and straight trough have only a place crossing.Guarantee this condition, the spiral fluted number of turns is a circle on whole length.Consequently the spiral fluted lead angle is very big.Now the diameter with spiral grooved tube is 40mm, and the spiral fluted axial length is that 800mm is an example, and its lead angle α=arctang800/40 π=81 ° 04 ' (seeing also Fig. 8) is if straight trough and spiral fluted groove width all are made as 3mm.Air suction opening area F=3 then 2/ cos81 ° of 04 '=57.12mm 2If the number of turns increases, lead angle reduces, and the single hole area reduces, but hole count increases gross area increase.Now computation structure is listed as follows:

The number of turns Lead angle α Air suction opening area F (mm 2) Air suction opening quantity amount The gross area (mm 2) The percentage (%) that the gross area increases 1 81°04’ 57.12 1 57.12 2 72°34’ 30 2 60 5 3 64°45’ 21.1 3 63.3 5.5 4 58°51’ 16.9 4 67.6 6.8 5 51°51’ 14.56 5 72.8 7.8

By result in the table as can be seen, the increase of the air suction opening gross area is not directly proportional with number of turns increase, if therefore under the situation that the power of dust catcher and noise allow, can suitably increase the spiral fluted number of turns, increasing the number of turns can increase the quantity of air suction opening, and air suction opening is uniformly distributed on the sweep-up pipe, helps raising the efficiency, reduces the dust suction time.

When carrying out screen pack dedusting work, the drive motors of controller control roller bearing end drives roller bearing 18 or 48 rotations, one angle, and the size of this angle should be to make flexible screen pack 17 or 47 distances that move be less than or equal to the width of sweep-up pipe one-time dedusting.Then, the motor 34 of spiral grooved tube 31 ends of controller control sweep-up pipe 30 revolves and turns around.For the spiral grooved tube that has only a circle on the whole length, should select slower rotating speed for use, air suction opening is moved one time with certain speed on whole length.If adopt the helix tube of multi-turn number, under the constant condition of air suction opening translational speed, rotating speed can be multiplied.

Fig. 5, the 7th, the scheme of installation of sweep-up pipe of the present invention in indoor apparatus of air conditioner.Be provided with fixed mount 40 in the both sides of indoor apparatus of air conditioner, described sweep-up pipe is fixedly arranged on the described fixed mount 40 by the support 41 at two ends.

The length of described sweep-up pipe is a bit larger tham the width of described screen pack, is 800mm at the width of screen pack, and the spiral grooved tube diameter is under the condition of 40mm, and the suggestion spiral fluted number of turns is the 1-4 circle.

Claims (15)

1. indoor apparatus of air conditioner with filtering net dust collector, described indoor apparatus of air conditioner is provided with casing, described casing is provided with air inlet and air outlet, be provided with circular heat exchanger in the casing, be provided with blower fan in described circular heat exchanger around the center, the exhaust outlet of blower fan connects the air outlet of casing, is provided with the dust removal and filtration net in the outside of described circular heat exchanger; It is characterized in that:
Be provided with the roller bearing that the drive screen pack moves in the two ends of described screen pack;
One by mutually sheathed spiral grooved tube with axially the sweep-up pipe formed of straight trough pipe is near the screen pack setting, and the end of the straight trough pipe of described sweep-up pipe is provided with the flexible pipe of connection dust catcher, and the end of described spiral grooved tube is provided with and makes the spiral grooved tube motor rotating.
2. the indoor apparatus of air conditioner with filtering net dust collector according to claim 1 is characterized in that: described dust removal and filtration net is flexible screen pack; Be provided with the roller bearing that the flexible screen pack of drive moves in the two ends of described flexible screen pack.
3. the indoor apparatus of air conditioner with filtering net dust collector according to claim 2, it is characterized in that: the both sides of described flexible screen pack, be provided with evenly distributed through hole, one of them the two ends of roller bearing of being located at flexible screen pack two ends are provided with ratchet, and connecting a drive motors, the evenly distributed through hole in the ratchet of described ratchet and the both sides of described flexible screen pack adapts.
4. the indoor apparatus of air conditioner with filtering net dust collector according to claim 2 is characterized in that: described flexible screen pack is fixed on the roller bearing at its two ends in the mode of twining.
5. according to claim 2 or 3 or 4 described indoor apparatus of air conditioner, it is characterized in that: below described flexible screen pack, be provided with a plurality of backing rolls with filtering net dust collector.
6. the indoor apparatus of air conditioner with filtering net dust collector according to claim 1 is characterized in that: described dust removal and filtration net is the rigid screen pack with rolling door type of support frame; Be provided with in the two ends of the rigid screen pack of described rolling door type with support frame and drive the roller bearing that screen pack moves.
7. the indoor apparatus of air conditioner with filtering net dust collector according to claim 6 is characterized in that: described rigid screen pack with rolling door type of support frame is made of a plurality of rigid frameworks that are hinged and the screen pack that is layed on the described rigid framework.
8. the indoor apparatus of air conditioner with filtering net dust collector according to claim 6, it is characterized in that: the described roller bearing of being located at the rigid screen pack two ends of rolling door type with support frame, the two ends of one of them are provided with ratchet, and connect a drive motors, the ratchet of described ratchet and describedly have a support frame fit.
9. the indoor apparatus of air conditioner with filtering net dust collector according to claim 6 is characterized in that: described rigid screen pack with rolling door type of support frame is fixed and is wound on the roller bearing at described two ends.
10. according to claim 6 or 7 or 8 or 9 described indoor apparatus of air conditioner, it is characterized in that: below the rigid screen pack of described rolling door type with support frame, be provided with a plurality of backing rolls with filtering net dust collector.
11. the indoor apparatus of air conditioner with filtering net dust collector according to claim 1 is characterized in that: the described sheathed mutually spiral grooved tube and the sweep-up pipe of axial straight trough pipe, spiral grooved tube wherein is sheathed on the outside of straight trough pipe.
12. the indoor apparatus of air conditioner with filtering net dust collector according to claim 6 is characterized in that: the helicla flute in described spiral grooved tube is provided with bristle.
13. the indoor apparatus of air conditioner with filtering net dust collector according to claim 1, it is characterized in that: the length of described sweep-up pipe is a bit larger tham the width of described screen pack, width at screen pack is 800mm, and the spiral grooved tube diameter is under the condition of 40mm, and the described spiral fluted number of turns is the 1-4 circle.
14. the indoor apparatus of air conditioner with filtering net dust collector according to claim 1 is characterized in that: the both sides in indoor apparatus of air conditioner are provided with fixed frame, described sweep-up pipe is fixedly arranged on the described fixed frame by the support at two ends.
15. the indoor apparatus of air conditioner with filtering net dust collector according to claim 1 is characterized in that: described spiral grooved tube cooperates for air-tightness each other with described straight trough pipe.
CN2007100795812A 2007-03-01 2007-03-01 Indoor set of air-conditioner with filtering net dust collector CN101256008B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2007100795812A CN101256008B (en) 2007-03-01 2007-03-01 Indoor set of air-conditioner with filtering net dust collector

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Application Number Priority Date Filing Date Title
CN2007100795812A CN101256008B (en) 2007-03-01 2007-03-01 Indoor set of air-conditioner with filtering net dust collector

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CN101256008B true CN101256008B (en) 2011-03-02

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Publication number Priority date Publication date Assignee Title
CN103062839B (en) * 2013-01-01 2015-06-03 美的集团股份有限公司 Air conditioner and air inlet device of indoor unit of air conditioner
CN105588320B (en) * 2015-07-29 2019-07-23 海信(山东)空调有限公司 It is a kind of can auto-cleaning filter screen air conditioner
CN105107316B (en) * 2015-08-07 2017-01-25 长沙高汇环保科技有限公司 Air conditioner and air strainer cleaning system therefor
CN109695950A (en) * 2017-10-23 2019-04-30 青岛海尔智能技术研发有限公司 A kind of air conditioner bilayer circular filter net dust-extraction unit and air conditioner
CN109695941A (en) * 2017-10-23 2019-04-30 青岛海尔智能技术研发有限公司 The control method and control unit and dust-extraction unit of air-conditioning filter net dust-extraction unit

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JP2004283704A (en) * 2003-03-20 2004-10-14 Matsushita Electric Ind Co Ltd Filter system for air conditioner
JP2004283703A (en) * 2003-03-20 2004-10-14 Matsushita Electric Ind Co Ltd Filter system for air conditioner
CN1759278A (en) * 2003-03-11 2006-04-12 松下电器产业株式会社 Air conditioner having indoor unit with automatic air filter-cleaning function
CN1773185A (en) * 2004-11-09 2006-05-17 松下电器产业株式会社 Indoor unit air conditioner with automatic cleaning air filter function
CN1873339A (en) * 2006-04-12 2006-12-06 广东美的电器股份有限公司 Self-purging unit for filter screen of air conditionner

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