CN216244769U - Small-size air purification unit of low noise - Google Patents
Small-size air purification unit of low noise Download PDFInfo
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- CN216244769U CN216244769U CN202122527045.2U CN202122527045U CN216244769U CN 216244769 U CN216244769 U CN 216244769U CN 202122527045 U CN202122527045 U CN 202122527045U CN 216244769 U CN216244769 U CN 216244769U
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Abstract
The invention discloses a low-noise small air purification unit applied to indoor air purification of families and offices. The air conditioner comprises an outer shell, a fan, accessories, a sound absorption and noise reduction device and a filter element assembly, wherein the upper panel of the outer shell is provided with an exhaust hole, the front panel is provided with an air inlet hole, and the fan, the accessories, the sound absorption and noise reduction device and the filter element assembly are arranged in the shell; the fan and the accessories comprise a fan, an air channel, a fan power supply and a wind speed adjusting knob switch component which are arranged in the middle of the shell; the sound absorption and noise reduction device is arranged around the fan and plays a role in reducing the running noise of the fan; wherein the filter element subassembly includes the three-layer: coarse filter screen, active carbon filter screen, HEPA filter screen, install behind the front panel, indoor contaminated air gets into inside the fan after front panel inlet port and three-layer filter screen filter. The invention has the beneficial effects that the low-noise small air purification unit applied to indoor air purification of families and offices is provided, a professional large-air-volume centrifugal fan ensures a larger effective coverage area for air purification, a sound absorption and noise reduction device consisting of micro-perforated plates reduces the noise of fan operation, and the three-layer filter element component ensures an excellent air filtration effect.
Description
Technical Field
The invention relates to a low-noise small air purification unit, in particular to a low-noise small air purification unit applied to indoor air purification of families and offices.
Background
With the continuous improvement of living standard, people pay more and more attention to indoor air quality, especially pm2.5 dust particles and other pollutants which affect physical and mental health. Various air purifiers are sold in the market at present, the price is high or low, the purification effect is uneven, and the air purifiers sold in the market at present have the outstanding problems that firstly, a plurality of air purifiers are not professional centrifugal fans, and the effective purification coverage area is small; secondly, the noise is too high when the purifier operates indoors.
Disclosure of Invention
The invention aims to solve the technical problem of providing an air purification unit with good purification effect and low operation noise aiming at the defects of the prior art, and simultaneously keeping low economic operation cost.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a low-noise small air purification unit applied to indoor air purification of families and offices comprises an outer shell, a fan, accessories, a sound absorption and noise reduction device and a three-layer filter element assembly, wherein the upper panel of the outer shell is provided with an exhaust hole, the front panel is provided with an air inlet hole, and the fan, the accessories, the sound absorption and noise reduction device and the three-layer filter element assembly are arranged inside the shell; the fan and the accessories comprise a fan, an air channel, a fan power supply and a wind speed adjusting knob switch component which are arranged in the middle of the shell; the sound absorption and noise reduction device is arranged around the fan and plays a role in reducing the running noise of the fan; the three-layer filter element assembly comprises a coarse filter screen, an active carbon filter screen and a HEPA (high efficiency particulate filter) filter screen (the HEPA filter screen is formed by interweaving very fine organic fibers, the particle capturing capability is strong, the effective rate of the qualified HEPA filter screen on 0.1 micron and 0.3 micron reaches 99.7%, the air filter screen is characterized in that air can pass through but fine particles cannot pass through), and the three-layer filter element assembly is installed behind a front panel, and indoor polluted air enters the inside of a fan after being filtered by a front panel air inlet and the three-layer filter element assembly.
The low-noise small air purification unit is a fan and accessories, the fan adopts a professional large-air-volume centrifugal fan (such as, but not limited to, an ebm centrifugal fan, an 175/180FLW centrifugal fan and the like), an air inlet of the fan faces to an air inlet hole of a front panel of the shell and a filter element assembly, an air outlet of an air duct faces to an air outlet hole of the upper panel of the shell, and purified air is discharged from the air outlet hole of the upper panel through the fan and the air duct.
The small low-noise air purifying unit-sound absorbing and noise reducing device is arranged around a fan, mainly comprises a micro-perforated plate and is used for reducing the running noise of the fan, a large number of micropores are regularly distributed on the micro-perforated plate, the diameter d of each micropore is less than 1mm, and the micro-perforated plate is used for absorbing the noise of a certain frequency.
The small-size air purification unit-shell body of low noise adopts ya keli or engineering plastics to make box pattern, and fan and annex, sound absorption and noise reduction device and filter element group spare are installed inside, and the filter element group spare just can conveniently be changed to the front panel is opened.
After the centrifugal fan of the small-size air purification unit of low noise operates, inhale indoor polluted air from the front panel that distributes a large amount of inlet ports, get into the inside wind channel of centrifugal fan after three-layer filter element group spare filters, inside wind channel mouth is towards the exhaust hole of the top panel at top, and centrifugal fan discharges air-purifying through the top panel that distributes a large amount of exhaust holes, so circulation purification room air.
In summary, the invention has the advantages that:
the utility model provides a be applied to family, office room air purification's small-size air purification unit of low noise, the great air purification effective coverage area is guaranteed to the big amount of wind centrifugal fan of specialty, and the sound absorption that the microperforated panel is constituteed falls the device of making an uproar and has reduced the noise of fan operation, and excellent air purification effect has been guaranteed to three-layer filter element group spare.
Additional advantages, objects, and features of the invention will be set forth in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic structural view of the present invention;
figure 3 is a schematic view of a microperforated panel sound absorbing assembly of the present invention.
In the figure: 2-1 front panel; 2-2 three-layer filter element components (including coarse filter screen, active carbon filter screen, HEPA filter screen); 2-3 intermediate plates; 2-4 left panels; 2-5, a top panel; 2-6 third air volume knob; 2-7 microperforated panel sound absorbing means; 2-8 rear panels; 2-9 centrifugal fan; 2-10 right panels; 2-11 support plates; 2-12 lower panels.
Detailed Description
The invention relates to a small air purification unit applied to indoor air purification of homes and offices, which comprises the following steps:
connecting a power line plug with a 220V power supply socket, selecting a three-gear air volume knob (2-6), setting the air volume knob at a proper air speed according to the indoor air pollution degree, and starting the small air purification unit to work; when the fan is just started, the air volume knob can be set at the strong wind speed of the third gear, after the fan works for 1-2 hours, the air volume knob can be set at the medium wind speed of the second gear after pollutants such as PM2.5 in indoor air and the like are reduced to a certain degree (the fan is matched with a portable high-precision PM2.5 air quality environment detector), and the air volume knob can be set at the weak wind speed of the third gear after long-time operation; under the action of a centrifugal fan (2-9), indoor dirty air is sucked through an air inlet of a front panel (2-1) of the shell, sequentially passes through a coarse filter screen, an active carbon filter screen and a HEPA filter screen of the three-layer filter core assembly (2-2), filtered pure air enters the centrifugal fan (2-9) through a middle plate (2-3), and is discharged from an exhaust hole of an upper panel (2-5) of the shell through an air duct of the centrifugal fan; the noise is larger when the centrifugal fan runs, and is especially obvious when a third-gear strong wind volume is started, so that the specially designed micro-perforated plate sound absorption devices (2-7) are arranged around the centrifugal fan (2-9) to complete the sound absorption and noise reduction functions; the supporting panel (2-11) is used for mounting and strength supporting of the centrifugal fan; the left panel (2-4), the rear panel (2-8), the right panel (2-10), the lower panel (2-12), the front panel (2-1) and the upper panel (2-5) jointly form a shell of the small air purification unit.
After the air purification unit operates for a plurality of months (the specific effective working time depends on the concentration of pollutants such as PM2.5 in indoor air), the purification efficiency is greatly reduced after the three-layer filter element assembly (2-2) adsorbs the pollutants such as PM2.5 in air, and the brand-new three-layer filter element assembly (2-2) can be replaced at the moment. The replacement mode is as follows: opening the front panel (2-1), extracting the old three-layer filter element assembly (2-2), replacing the brand-new three-layer filter element assembly (2-2), and then buckling the front panel.
The specially designed micro-perforated panel sound absorption device (2-7) adopts the theory principle of micro-perforation sound absorption and noise reduction of Madao \29495. Firstly, carrying out noise spectrum analysis on a centrifugal fan (2-9), then designing parameters of a sound absorption structure of a micro-perforated plate according to a spectrum analysis result, and processing the sound absorption structure by engineering plastics to obtain the sound absorption structure, wherein as shown in figure 3, the parameter calculation method comprises the following steps:
at normal incidence, the sound absorption coefficient is
Wherein the relative acoustic resistance, acoustic resistance constant
Relative acoustic mass
Constant of acoustic mass
Micro-perforated plate constant
Wherein (including the characters in fig. 3): t-microperforated plate thickness mm, D-micropore diameter mm, b-micropore spacing mm, D-microperforated plate rear cavity thickness mm,
control of the noise main frequency, also the resonance frequency.
The coefficient of sound absorption being greatest at the resonant frequency
Resonant frequency
Satisfy the requirement of
The frequency with half of the maximum sound absorption coefficient satisfies
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is apparent that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. The utility model provides a be applied to small-size air purification unit of low noise of family, office room indoor air purification which characterized in that: the air conditioner comprises an outer shell, a fan, accessories, a sound absorption and noise reduction device and a filter element assembly, wherein the upper panel of the outer shell is provided with an exhaust hole, the front panel is provided with an air inlet hole, and the fan, the accessories, the sound absorption and noise reduction device and the filter element assembly are arranged in the shell; the fan and the accessories comprise a fan, an air channel, a fan power supply and a wind speed adjusting knob switch component which are arranged in the middle of the shell; the sound absorption and noise reduction device is arranged around the fan and plays a role in reducing the running noise of the fan; wherein the filter element subassembly includes the three-layer: coarse filter screen, active carbon filter screen, HEPA filter screen, install behind the front panel, indoor contaminated air gets into inside the fan after front panel inlet port and three-layer filter screen filter.
2. The low noise compact air purification unit of claim 1, wherein: the fan adopts professional large-air-volume centrifugal fan, the air inlet of the fan faces to the air inlet hole of the front panel and the filter element assembly, the air outlet of the air channel faces to the exhaust hole of the upper panel of the outer shell, indoor polluted air enters the air channel inside the centrifugal fan after passing through the air inlet hole of the front panel and the three-layer filter screen, and the purified air is discharged from the exhaust hole of the upper panel through the fan and the air channel, so that the indoor air is circularly purified.
3. The low noise compact air purification unit of claim 1, wherein: the sound absorption and noise reduction device mainly comprises a micro-perforated plate and is used for reducing the running noise of a fan, a large number of micropores are regularly distributed on the micro-perforated plate, the diameter d of each micropore is less than 1mm, and the micro-perforated plate is used for absorbing the noise of a certain frequency.
4. The low noise compact air purification unit of claim 1, wherein: the shell body is made into a box shape by acrylic or engineering plastics, the fan, accessories, the sound absorption and noise reduction device and the filter element assembly are arranged inside the shell body, and the filter element assembly can be conveniently replaced by opening the front panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122527045.2U CN216244769U (en) | 2021-10-20 | 2021-10-20 | Small-size air purification unit of low noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122527045.2U CN216244769U (en) | 2021-10-20 | 2021-10-20 | Small-size air purification unit of low noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216244769U true CN216244769U (en) | 2022-04-08 |
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ID=80986415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122527045.2U Active CN216244769U (en) | 2021-10-20 | 2021-10-20 | Small-size air purification unit of low noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216244769U (en) |
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2021
- 2021-10-20 CN CN202122527045.2U patent/CN216244769U/en active Active
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