CN106765736A - A kind of air cleaning unit, fan coil and central air-conditioning - Google Patents
A kind of air cleaning unit, fan coil and central air-conditioning Download PDFInfo
- Publication number
- CN106765736A CN106765736A CN201710152122.6A CN201710152122A CN106765736A CN 106765736 A CN106765736 A CN 106765736A CN 201710152122 A CN201710152122 A CN 201710152122A CN 106765736 A CN106765736 A CN 106765736A
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- Prior art keywords
- air
- plenum
- cleaning unit
- air cleaning
- electro
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- 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
- F24F8/192—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 by electrical means, e.g. by applying electrostatic fields or high voltages
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention provides a kind of air cleaning unit, it is related to air purification filter technical field.The air cleaning unit includes plenum, preposition filter screen and electro-dissociator；Insertion before and after the plenum；The electro-dissociator is removably built in the inner chamber of the plenum, and the particle in the air of the plenum is flowed through for ionizing absorption；The preposition filter screen is arranged on the air intake vent of the plenum.Air cleaning unit of the invention, the parts of purification of air are incorporated into a complete structure, are free to be combined with the central air-conditioning of different size, fan coil, coordinate the air outlet and return air inlet of fan coil to realize the function of air purification filter.On this basis, present invention also offers a kind of fan coil and central air-conditioning.
Description
Technical field
The present invention relates to air purification filter technical field, more particularly to a kind of air cleaning unit, fan coil and in
Centre air-conditioning.
Background technology
In the market without the air purifier matched with central air-conditioning truly, only recalled in central hollow
The Simple filter net that air port installs additional, and this air cleaning unit can not play a part of purification of air.
Existing air purifier is that the filter type netted by HEPA comes purify air, HEPA (High efficiency mostly
Particulate air Filter), the Chinese meaning is high efficiency particle air filter, the screen pack of HEPA standards is reached, for 0.1
It is that air can pass through that micron and 0.3 micron of effective percentage are reached the characteristics of 99.7%, HEPA is netted, but tiny particulate cannot
Pass through.HEPA points of PP filter paper, glass fibre, compound PP PET filter paper, five kinds of materials of melt-blown terylene non-woven fabric and melt-blown glass fibre
Matter.Feature：Windage is big, and dust containing capacity is big, and filtering accuracy is high.However, having many drawbacks using the clarifier that HEPA nets are filtered：
1st, the air purifier by HEPA net filtrations has very big windage, and air quantity does not reach the requirement of central air-conditioning.If
Being connected with central air-conditioning air outlet/return air inlet can largely reduce the air output of central air-conditioning.
2nd, the air purifier by HEPA net filtrations needs to spend to change screen pack for regular 2 to 3 times every year, if be changed without
Secondary pollution can be produced, and causes particulate matter to block screen pack due to being changed without screen pack, can decay center to a greater extent
The air output of indoor apparatus of air conditioner.
3rd, installed generally at the fan coil of central air-conditioning, the central air-conditioning of different size installs different screen pack groups
Part so that the service efficiency of filter directly affects the using effect of central air-conditioning.
The content of the invention
It is an object of the invention to provide a kind of air cleaning unit, fan coil and central air-conditioning, to solve existing skill
Air cleaning unit in art installs and uses underaction, cannot be applicable different size central air-conditioning or fan coil is asked
Topic.
To achieve these goals, the present invention uses following technical scheme：
A kind of air cleaning unit that the present invention is provided, including plenum, preposition filter screen and electro-dissociator；The ventilation shell
Insertion before and after body；The electro-dissociator is removably built in the inner chamber of the plenum, and described leading to is flowed through for ionizing absorption
Particle in the air of crust of weathering body；The preposition filter screen is arranged on the air intake vent of the plenum.
Further, air cleaning unit also includes circuit box, and the circuit box is arranged on the outside of the plenum, institute
Circuit box is stated to be electrically connected with the electro-dissociator.The technical scheme has technical effect that：Circuit box provides power supply for electro-dissociator, and
And the outside of plenum is arranged on due to circuit box, while the function of electro-dissociator purification filtering is realized, incorporate power supply
Component, without preparing an independent power supply exclusively for electro-dissociator, and do not influence the ventilation effect of air cleaning unit.
Further, the electro-dissociator is provided with electrostatic generator, and the electrostatic generator is connected with the preposition filter screen.Should
Technical scheme has technical effect that：The work of coarse filtration is assume responsibility for before air air inlet purifier due to preposition filter screen
Make, and the object of coarse filtration is typically the light and soft particle object of hair, fine hair etc, therefore for preposition filter screen leads to electrostatic, energy
It is enough efficiently to adsorb such air plankton.
Further, the electro-dissociator and the plenum clamping.The technical scheme has technical effect that：Electro-dissociator with
Plenum is to be detachably connected, and the interface arrangment type of guide groove guide rail etc, can conveniently, soon than mounting means such as bolts
It is prompt, practical.
Further, air cleaning unit also includes felt pad, and the felt pad is arranged on the bottom of the plenum inner chamber
Portion.The technical scheme has technical effect that：Felt pad is prevented from plenum and produces electrostatic, so as to adsorb air particles
Thing, while the loss of electricity can also be avoided.
Further, also including fixation clip, the fixation clip is arranged on the top of the plenum inner chamber.The technology
Scheme has technical effect that：Fixation clip abuts electro-dissociator from the top of plenum inner chamber, can not only fasten electro-dissociator,
Colliding between plenum and electro-dissociator can also be avoided or scratched.
The present invention also provides a kind of fan coil, including coil pipe body and above-mentioned air cleaning unit；The air
Purifier is arranged on the air outlet or return air inlet of the coil pipe body.
Further, fan coil also includes sealing gasket, and the sealing gasket is arranged on the air cleaning unit with the disk
Between tube body.The technical scheme has technical effect that：On the one hand sealing gasket makes coil pipe body be formed with air cleaning unit
One air duct of sealing, another aspect sealing gasket also acts as the effect of isolated from power, it is to avoid the portion being connected with fan coil
Part receives the influence of electrostatic.
Further, fan coil also include connecting tube, the connecting tube be used for connect the air cleaning unit with it is described
Coil pipe body；The connecting tube is metal tube, PC tubes of material or fabric flexible pipe.The technical scheme has technical effect that：Gold
The connecting tube that category pipe, PC tubes of material or fabric flexible pipe make causes that air cleaning unit is applied to the fan unit of multi-form
Pipe.
The present invention also provides a kind of central air-conditioning, including air conditioner main body and above-mentioned fan coil；The air conditioner main body
It is fixedly connected with the fan coil.
The beneficial effects of the invention are as follows：
1st, air cleaning unit is removably built in the inner chamber of the plenum due to electro-dissociator, when electro-dissociator reaches
When live load, cleaning can be pulled down, be reused after installation, reduce the use cost of equipment, it is to avoid air is net
Change the secondary pollution of device.
2nd, the air intake vent of plenum is arranged on due to preposition filter screen, therefore preposition filter screen is easy to clean clean, it is to avoid filter screen
Larger windage is caused to air cleaning unit, without repeatedly pulling down replacing.
3rd, the air outlet of fan coil or return air inlet set air cleaning unit, not only with the skill that above-mentioned two is beneficial
Art effect, and the central air-conditioning of different size is more applicable for, gas that is selective or having purified central air-conditioning discharge simultaneously
With the gas of suction.
4th, the central air-conditioning that air conditioner main body is combined with fan coil, because air cleaning unit can be changed simply and clearly
It is clean, therefore the use failure of central air-conditioning is reduced, improve the service efficiency of central air-conditioning.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the specific embodiment of the invention, specific embodiment will be described below
Needed for the accompanying drawing to be used be briefly described.It should be evident that drawings in the following description are some implementations of the invention
Mode, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
The structure decomposition figure of the air cleaning unit that Fig. 1 is provided for the present invention；
The construction profile figure of the air cleaning unit that Fig. 2 is provided for the present invention；
Construction profile figure of the air cleaning unit with sealing gasket that Fig. 3 is provided for the present invention；
The construction profile figure one of the fan coil that Fig. 4 is provided for the present invention；
The construction profile figure two of the fan coil that Fig. 5 is provided for the present invention；
The construction profile figure of the central air-conditioning that Fig. 6 is provided for the present invention.
Reference：
1- plenums；The preposition filter screens of 2-；3- electro-dissociators；
4- circuit box；5- felt pads；6- fixation clips；
7- coil pipe bodies；8- air outlets；9- return air inlets；
10- sealing gaskets；11- connecting tubes；12- air conditioner main bodies.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify describe, rather than indicate imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The invention provides a kind of air cleaning unit, wherein：The structure of the air cleaning unit that Fig. 1 is provided for the present invention
Exploded view, the construction profile figure of the air cleaning unit that Fig. 2 is provided for the present invention.As shown in Figure 1, 2, air cleaning unit includes
Plenum 1, preposition filter screen 2 and electro-dissociator 3.Specifically, insertion before and after plenum 1, electro-dissociator 3 is removably built in logical
The inner chamber of crust of weathering body 1, the direction of ventilation of electro-dissociator 3 in the same direction, ventilation is flowed through for ionizing absorption with the front and rear line of plenum 1
Particle in the air of housing 1.In addition, preposition filter screen 2 is arranged on the air intake vent of plenum 1, plenum 1 is entered in air
Before filter out hair or fine hair in air.
In the prior art, existing air purifier is that the filter type netted by HEPA comes purify air, HEPA mostly
(High efficiency particulate air Filter), the Chinese meaning is high efficiency particle air filter, reaches HEPA marks
Accurate screen pack, it is that air can pass through to be reached the characteristics of 99.7%, HEPA is netted for the effective percentage of 0.1 micron and 0.3 micron,
But tiny particulate cannot pass through.HEPA point PP filter paper, glass fibre, compound PP PET filter paper, melt-blown terylene non-woven fabric and
Five kinds of materials of melt-blown glass fibre.Feature：Windage is big, and dust containing capacity is big, and filtering accuracy is high.However, being filtered using HEPA nets
Clarifier have many drawbacks：1st, the air purifier by HEPA net filtrations has very big windage, and air quantity does not reach central air-conditioning
Requirement.If be connected can largely reduce the air output of central air-conditioning with the return air inlet 9 of central air-conditioning air outlet 8/.2nd, lean on
The air purifier of HEPA net filtrations needs to spend to change screen pack for regular 2 to 3 times every year, if being changed without that secondary dirt can be produced
Dye, and cause particulate matter to block screen pack due to being changed without screen pack, can decay central air conditioning indoor unit to a greater extent
Air output.3rd, installed generally at the fan coil of central air-conditioning, the central air-conditioning of different size installs different screen pack groups
Part so that the service efficiency of filter directly affects the using effect of central air-conditioning.
Air cleaning unit of the invention, can preferably solve the above problems：First, air cleaning unit is due to ionization
Device 3 is removably built in the inner chamber of the plenum 1, when electro-dissociator 3 reaches live load, can pull down clear
Wash, reused after installation, reduce the use cost of equipment, it is to avoid the secondary pollution of air purifier.Secondly as preceding
The air intake vent that filter screen 2 is arranged on plenum 1 is put, therefore preposition filter screen 2 is easy to clean clean, it is to avoid filter screen is to air cleaning unit
Larger windage is caused, without repeatedly pulling down replacing.
In the alternative of the present embodiment, as shown in figure 1, further, air cleaning unit also includes circuit box 4,
Wherein, circuit box 4 is arranged on the outside of plenum 1, and is electrically connected with electro-dissociator 3.In the present embodiment, circuit box 4 is electricity
Power supply is provided from device 3, and the outside of plenum 1 is arranged on due to circuit box 4, realizing the work(of the purification filtering of electro-dissociator 3
While energy, the component of power supply is incorporated, without preparing an independent power supply exclusively for electro-dissociator 3, and do not influence air net
The ventilation effect that makeup is put.
In the alternative of the present embodiment, further, electro-dissociator 3 is provided with electrostatic generator, electrostatic generator with
Preposition filter screen 2 is connected.Assume responsibility for the work of coarse filtration before air air inlet purifier due to preposition filter screen 2, and thick mistake
The object of filter is typically the light and soft particle object of hair, fine hair etc, therefore for preposition filter screen 2 leads to electrostatic, can be efficiently
Adsorb such air plankton.
In the alternative of the present embodiment, as shown in figure 1, further, electro-dissociator 3 and the clamping of plenum 1.Its
In, electro-dissociator 3 can also be fixedly mounted on the inner chamber of plenum 1 using bolt.In the present embodiment, specifically, in ventilation
The inwall of housing 1 sets guide groove, and electro-dissociator 3 is clamped using guide groove, and electro-dissociator 3 is set to removable with plenum 1 by guide groove
Unload connection, and the interface arrangment type of guide groove, guide rail etc, can convenient, fast, practicality than mounting means such as bolts.Need
Bright, electro-dissociator 3 could be arranged to be put into installation from the upper opening of plenum 1, it is also possible to from the inlet air of plenum 1
Mouth or exhaust outlet are put into and connect and fix.
In the alternative of the present embodiment, as shown in figure 1, further, air cleaning unit is additionally provided with felt pad
5, felt pad 5 is arranged on the bottom of the inner chamber of plenum 1, for supporting electro-dissociator 3.In the present embodiment, felt pad 5 can be prevented
Only plenum 1 produces electrostatic, so that air particle has been adsorbed, while the loss of electricity can also be avoided.
In the alternative of the present embodiment, as shown in figure 1, further, air cleaning unit also includes fixation clip
6, fixation clip 6 is arranged on the top of the inner chamber of plenum 1, and the top with electro-dissociator 3 abuts.Due to fixation clip 6 from ventilation
The top of the inner chamber of housing 1 abuts electro-dissociator 3, can not only fasten electro-dissociator 3, additionally it is possible to avoid plenum 1 and electro-dissociator 3 it
Between collide with or scratch.
The present invention also provides a kind of fan coil, and Fig. 3 carries sealing gasket 10 for the air cleaning unit that the present invention is provided
Construction profile figure, the construction profile figure one of the fan coil that Fig. 4 is provided for the present invention, the fan coil that Fig. 5 is provided for the present invention
Construction profile figure two.As shown in Figure 4,5, fan coil includes coil pipe body 7 and above-mentioned air cleaning unit.Wherein,
Air cleaning unit is arranged on the air outlet 8 or return air inlet 9 of coil pipe body 7.
As shown in figure 3, further, fan coil also includes sealing gasket 10, wherein, sealing gasket 10 is arranged on purification of air
Between device and coil pipe body 7.In the present embodiment, the one side of sealing gasket 10 makes coil pipe body 7 be formed with air cleaning unit
One air duct of sealing, another aspect sealing gasket 10 also acts as the effect of isolated from power, it is to avoid be connected with fan coil
Part receives the influence of electrostatic.
As shown in Figure 4,5, further, fan coil also includes connecting tube 11, and specifically, connecting tube 11 is used to connect sky
Air purifying apparatus and coil pipe body 7；Wherein, connecting tube 11 may be selected to use metal tube, PC tubes of material or fabric flexible pipe.It is different
The connecting tube 11 of type causes that air cleaning unit is applied to the fan coil of multi-form.
In sum, the air outlet 8 of fan coil or return air inlet 9 set air cleaning unit, not only with above-mentioned two
Individual beneficial technique effect, and the central air-conditioning of different size is more applicable for, selectively or simultaneously purify central air-conditioning
The gas of discharge and the gas of suction.
The present invention also provides a kind of central air-conditioning, the construction profile figure of the central air-conditioning that Fig. 6 is provided for the present invention.Such as Fig. 6
Shown, central air-conditioning includes air conditioner main body 12 and above-mentioned fan coil；Wherein, air conditioner main body 12 is fixed with fan coil and connected
Connect.
In sum, 1, air cleaning unit is removably built in the inner chamber of the plenum 1 due to electro-dissociator 3,
When electro-dissociator 3 reaches live load, cleaning can be pulled down, be reused after installation, reduce the use cost of equipment,
Avoid the secondary pollution of air purifier.2nd, it is arranged on the air intake vent of plenum 1 due to preposition filter screen 2, therefore preposition filter screen 2
It is easy to clean clean, it is to avoid filter screen causes larger windage to air cleaning unit, without repeatedly pulling down replacing.3rd, fan unit
The air outlet 8 or return air inlet 9 of pipe set air cleaning unit, not only with the technique effect that above-mentioned two is beneficial, and more
Suitable for the central air-conditioning of different size, the gas of gas that is selective or having purified central air-conditioning discharge simultaneously and suction.
4th, the central air-conditioning that air conditioner main body 12 is combined with fan coil, because air cleaning unit can be changed simply and be cleaned, therefore subtracts
Lack the use failure of central air-conditioning, improve the service efficiency of central air-conditioning.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
Pipe has been described in detail with reference to foregoing embodiments to the present invention, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of air cleaning unit, it is characterised in that including plenum, preposition filter screen and electro-dissociator；
Insertion before and after the plenum；
The electro-dissociator is removably built in the inner chamber of the plenum, and the plenum is flowed through for ionizing absorption
Particle in air；
The preposition filter screen is arranged on the air intake vent of the plenum.
2. air cleaning unit according to claim 1, it is characterised in that also including circuit box, the circuit box is set
In the outside of the plenum, the circuit box is electrically connected with the electro-dissociator.
3. air cleaning unit according to claim 2, it is characterised in that the electro-dissociator is provided with electrostatic generator,
The electrostatic generator is connected with the preposition filter screen.
4. air cleaning unit according to claim 1, it is characterised in that the electro-dissociator and the plenum card
Connect.
5. air cleaning unit according to claim 1, it is characterised in that also including felt pad, the felt pad is set
In the bottom of the plenum inner chamber.
6. air cleaning unit according to claim 1, it is characterised in that also including fixation clip, the fixation clip
It is arranged on the top of the plenum inner chamber.
7. a kind of fan coil, it is characterised in that the air including coil pipe body and as described in any one of claim 1~6
Purifier；The air cleaning unit is arranged on the air outlet or return air inlet of the coil pipe body.
8. fan coil according to claim 7, it is characterised in that also including sealing gasket, the sealing gasket is arranged on institute
State between air cleaning unit and the coil pipe body.
9. fan coil according to claim 7, it is characterised in that also including connecting tube, the connecting tube is used to connect
The air cleaning unit and the coil pipe body；The connecting tube is metal tube, PC tubes of material or fabric flexible pipe.
10. a kind of central air-conditioning, it is characterised in that the blower fan including air conditioner main body and as described in any one of claim 7~9
Coil pipe；The air conditioner main body is fixedly connected with the fan coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710152122.6A CN106765736A (en) | 2017-03-15 | 2017-03-15 | A kind of air cleaning unit, fan coil and central air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710152122.6A CN106765736A (en) | 2017-03-15 | 2017-03-15 | A kind of air cleaning unit, fan coil and central air-conditioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106765736A true CN106765736A (en) | 2017-05-31 |
Family
ID=58962750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710152122.6A Pending CN106765736A (en) | 2017-03-15 | 2017-03-15 | A kind of air cleaning unit, fan coil and central air-conditioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106765736A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327910A (en) * | 2017-06-27 | 2017-11-07 | 珠海格力电器股份有限公司 | Return air filter device and air pipe indoor unit |
| CN111365795A (en) * | 2020-04-28 | 2020-07-03 | 肖柏仁 | Air purifier |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327910A (en) * | 2017-06-27 | 2017-11-07 | 珠海格力电器股份有限公司 | Return air filter device and air pipe indoor unit |
| CN111365795A (en) * | 2020-04-28 | 2020-07-03 | 肖柏仁 | Air purifier |
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Application publication date: 20170531 |
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