CN201180633Y - Air-intake soundproof filter - Google Patents
Air-intake soundproof filter Download PDFInfo
- Publication number
- CN201180633Y CN201180633Y CNU2007201707443U CN200720170744U CN201180633Y CN 201180633 Y CN201180633 Y CN 201180633Y CN U2007201707443 U CNU2007201707443 U CN U2007201707443U CN 200720170744 U CN200720170744 U CN 200720170744U CN 201180633 Y CN201180633 Y CN 201180633Y
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- silencing apparatus
- shell chamber
- insertion tube
- opening
- shell
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Abstract
The utility model discloses an air-intake noise elimination filter, which comprises a shell, a filter screen, a muffler, a first end housing and an air admission interface. The shell is provided with a shell cavity penetrating transversely; a first opening and a second opening are formed on the shell cavity in the transverse direction; the first end housing is fixed at the first opening of the shell cavity; the air admission interface is arranged on the first end housing; the muffler is transversely arranged inside the shell cavity; the muffler is provided with an inlet and an outlet which are communicated with each other; the inlet of the muffler is communicated with the air admission interface; the filter screen is fixed inside the shell cavity and is adjacent to the second opening of the shell cavity; the outlet of the muffler is communicated with the filter screen. The noise elimination filter integrates the noise elimination function to the filter, realizes the control of the low frequency noise at an admitting port of a compressor, and can solve the contradiction between the noise suppression and the air supply volume of the compressor to the utmost extent; the muffler and the filter screen are integrated together, thereby effectively reducing the resistance noise elimination effect of the filter and facilitating the improvement in the air admission effect.
Description
Technical field
The utility model is about a kind of filter, especially about a kind of filter that is applied on the medical breathing machine air-channel system.
Background technique
At present, the air intake filter that compressor is commonly used in the respiratory machine is mainly the filer element type filter.The working principle of filer element type filter: the gas that contains impurity is subjected to the restriction in filter element filtering aperture during by filter core, and most of impurity just can be assembled on filter core, and gas is then fast by filter core, thereby realizes separating of impurity and gas.The material of filter core is mainly selected conventional material for core for use, as sponge, filter paper etc., does not select special material at medical field for use.
In addition, because used for respirators is in intensive care unit(ICU), very strict to criteria of noise control, the compressor inlet noise is one of main noise source of respiratory machine.The inlet noise of respiratory machine compressor mainly adopts the method for resistance noise reduction, i.e. bonding noise elimination sponge around the casing, absorb the noise that suction port gives off by this sponge, simultaneously, can also design specific wind path, the suction port and the outside intake grill of respiratory machine of compressor are staggered mutually, further avoid the compressor inlet noise radiation to the respiratory machine outside.
In the said method, the air inlet air quantity of Noise Suppression and compressor is conflicting.If the air inlet wind path has some setbacks, inhalation resistance is big, may go out to cause the compressor air inflow not enough, can not satisfy the needs of special breathing pattern; If the air inlet wind path is very smooth and easy, then the compressor inlet noise just is radiated machine exterior, causes the noise of respiratory machine complete machine higher, reduces the travelling comfort of product, can not satisfy the specific demand of Intensive Care Therapy.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiencies in the prior art, and a kind of intake noise reduction filter that can suppress noise simultaneously and guarantee air intake is provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of intake noise reduction filter, comprise shell, filter screen, silencing apparatus, first end cap and intake interface, this shell has the shell chamber of laterally running through, this shell chamber laterally has first opening and second opening, this first end cap is fixed on first opening in this shell chamber, this intake interface is arranged on this first end cap, this silencing apparatus is horizontally placed in this shell chamber, this silencing apparatus has import and the outlet that communicates, the import of this silencing apparatus communicates with this intake interface, this filter screen is fixed in this shell chamber and second opening in contiguous this shell chamber, and the outlet of this silencing apparatus communicates with this filter screen.
Described second opening is fixed with second end cap, and this shell chamber has the location wall, and this filter screen is fixed between this location wall and this second end cap, and this second end cap has at least one air inlet duct that is laterally running through.
Described shell chamber is included in the first shell chamber, the 3rd shell chamber and the second shell chamber that laterally communicates in turn, the internal diameter in this first shell chamber and this second shell chamber is all greater than the internal diameter in the 3rd shell chamber, end with import and this first end cap of this silencing apparatus are fixed, and the end with outlet of this silencing apparatus inserts the 3rd shell chamber.
Described silencing apparatus comprises the insertion tube of at least one lateral direction penetrating, and this insertion tube has the perforation that runs through its tube wall.
Described insertion tube has two at least, and each insertion tube is connected in series in turn, and the opening of the insertion tube of the most close first end cap is the opening of whole silencing apparatus, and the outlet of the insertion tube of close filter screen is as the outlet of whole silencing apparatus.
The distance of the import of described each perforation of inserting and this insertion tube is L/2, and the distance of the perforation of this insertion tube and the outlet of this insertion tube is L/4, and this L is this insertion tube length in the horizontal.
Described silencing apparatus is selected from: expansion chamber silencing apparatus, resonance cavate silencing apparatus.
Described silencing apparatus is single-unit formula, double-joint type or multi-fold type silencing apparatus.
The invention has the beneficial effects as follows, noise elimination function is integrated in the filter goes, realized the control of compressor inlet low-frequency noise, can solve Noise Suppression and compressor air output contradiction between the two largely; Silencing apparatus and filter screen integrate, and can effectively reduce the resistance noise reduction effect of filter, help improving the air inlet effect.
Description of drawings
Fig. 1 is the perspective view of present embodiment intake noise reduction filter;
Fig. 2 is the three-dimensional exploded view of present embodiment intake noise reduction filter;
Fig. 3 is the sectional view of present embodiment intake noise reduction filter.
Embodiment
As shown in Figure 1 to Figure 3, present embodiment intake noise reduction filter comprises shell 1, first end cap 2, intake interface 3, silencing apparatus 4, second end cap 5 and filter screen 6.This shell 1 has in the shell chamber of laterally running through 11, and this shell chamber 11 laterally has first opening and second opening.This first end cap 2 is fixed on first opening in this shell chamber 11 by threaded fastener 7, and this intake interface 3 is fixed on this first end cap 2.This silencing apparatus 4 laterally places in this shell chamber 11, it has import 41 and outlet 42, end with import of this silencing apparatus 4 and this first end cap 2 are fixing, and the end with outlet of this silencing apparatus 4 inserts in this shell chamber 11, and the import 41 of this silencing apparatus is communicated with this intake interface 3.This second end cap 5 is fixed on second opening in this shell chamber 11, and it has at least one air inlet duct 51 that is laterally running through.This shell chamber 11 has location wall 14, this filter screen 6 is fixed between this second end cap 5 and this location wall 14, this location wall 14 is divided into the first shell chamber 15 and the second shell chamber 16 with this shell chamber 11, this first shell chamber 15 and this second shell chamber 16 are communicated with by the 3rd shell chamber 17 of crossing this location wall 14, the internal diameter in this first shell chamber 15 and this second shell chamber 16 is all greater than the internal diameter in the 3rd shell chamber 17, this first opening is the opening in this first shell chamber 15, this second opening is the opening in this second shell chamber 16, and the end with outlet of this silencing apparatus 4 promptly inserts in the 3rd shell chamber 17.This silencing apparatus 4 is the insertion tube of a lateral direction penetrating, this insertion tube has a plurality of perforation 43 that run through its tube wall, this perforation 43 is L/2 with the distance of the import 41 of this insertion tube, and this perforation 43 is L/4 with the distance of the outlet 42 of this insertion tube, and L is the length of this insertion tube.
This intake noise reduction filter has filtering function and noise elimination function.For filtering function, outside air enters filter screen 6 through the air inlet duct 51 of second end cap, filters out impurities by filter screen 6, and the air after the filtration arrives intake interface 3 through silencing apparatus 4, enter into the suction port of compressor at last by intake interface 3, the air of cleaning is provided for compressor.For noise elimination function, when providing clean air for compressor inlet, the low-frequency noise of compressor inlet also is transmitted to silencing apparatus 4 (insertion tube) by intake interface 3, because this insertion tube has a plurality of perforation 43, these perforation 43 can be radiated the low-frequency noise of compressor in the shell chamber 11 of shell, after repeatedly reflection and interference, make acoustic energy be converted to heat energy and consume, so just the low-frequency noise of compressor is filtered out, make it not be transmitted to respiratory machine inside by this intake noise reduction filter, the low-frequency noise that has well solved compressor inlet is radiated the problem of compressor outside.
This filter screen 6 is made by medical material, can satisfy the bio-compatibility requirement.This filter screen can adopt the mode of end face filtration, also can adopt the mode of circumferential filtration, and perhaps end face filters and circumferentially filters the mode that combines, to satisfy the requirement of different compressors air inflow.After long-time the use, impurity may stop up filter screen, influences the air inflow of compressor, and therefore, filter screen is as primary filter herein, and the aperture is greater than 100um, will regularly clean or replace filter screen simultaneously.
This silencing apparatus 4 both can only comprise an insertion tube, also can comprise two or more insertion tubes, each insertion tube is in horizontal serial connection in turn, and the import of the insertion tube of the most close first end cap is as the import of whole silencing apparatus, and the outlet of the insertion tube of close filter screen is as the outlet of whole silencing apparatus.This silencing apparatus can also be existing expansion chamber silencing apparatus, this expansion chamber silencing apparatus utilize pipeline section expansion, shrink the sonic reflection cause and interfere and eliminate the noise, it is the full rate noise elimination in theory; Simultaneously, bigger for fear of local resistance loss, improve aerodynamic quality, two interpolation pipes are coupled together greater than 25% perforated pipe with punching rate, like this with regard to the great big problem of drag losses of having improved.This silencing apparatus can also adopt resonance cavate silencing apparatus.When this silencing apparatus adopted expansion chamber silencing apparatus or resonance cavate silencing apparatus, these silencing apparatuss both can be the single-unit silencing apparatus, also can be two joint or multi-fold type silencing apparatuss.
This intake noise reduction filter is integrated into noise elimination function in the filter, has realized the control of compressor inlet low-frequency noise, can solve Noise Suppression and compressor air output contradiction between the two to a great extent; Silencing apparatus and filter screen integrate, and can effectively reduce the resistance noise reduction effect of conventional filtration device, help improving the air inlet effect.Filter screen adopts the medical field proprietary material, satisfies the bio-compatibility requirement, improves security of products, and compact structure, and volume is little, helps the miniaturization of equipment.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (8)
1. intake noise reduction filter, it is characterized in that: comprise shell, filter screen, silencing apparatus, first end cap and intake interface, this shell has the shell chamber of laterally running through, this shell chamber laterally has first opening and second opening, this first end cap is fixed on first opening in this shell chamber, this intake interface is arranged on this first end cap, this silencing apparatus is horizontally placed in this shell chamber, this silencing apparatus has import and the outlet that communicates, the import of this silencing apparatus communicates with this intake interface, this filter screen is fixed in this shell chamber and second opening in contiguous this shell chamber, and the outlet of this silencing apparatus communicates with this filter screen.
2. intake noise reduction filter according to claim 1, it is characterized in that: described second opening is fixed with second end cap, this shell chamber has the location wall, and this filter screen is fixed between this location wall and this second end cap, and this second end cap has at least one air inlet duct that is laterally running through.
3. intake noise reduction filter according to claim 2, it is characterized in that: described shell chamber is included in the first shell chamber, the 3rd shell chamber and the second shell chamber that laterally communicates in turn, the internal diameter in this first shell chamber and this second shell chamber is all greater than the internal diameter in the 3rd shell chamber, end with import and this first end cap of this silencing apparatus are fixed, and the end with outlet of this silencing apparatus inserts the 3rd shell chamber.
4. according to any described intake noise reduction filter among the claim 1-3, it is characterized in that: described silencing apparatus comprises the insertion tube of at least one lateral direction penetrating, and this insertion tube has the perforation that runs through its tube wall.
5. intake noise reduction filter according to claim 4, it is characterized in that: described insertion tube has two at least, each insertion tube is connected in series in turn, the opening of the insertion tube of the most close first end cap is the opening of whole silencing apparatus, and the outlet of the insertion tube of close filter screen is as the outlet of whole silencing apparatus.
6. intake noise reduction filter according to claim 5, it is characterized in that: the distance of the perforation of described each insertion tube and the import of this insertion tube is L/2, the distance of the perforation of this insertion tube and the outlet of this insertion tube is L/4, and this L is this insertion tube length in the horizontal.
7. intake noise reduction filter according to claim 1 and 2 is characterized in that: described silencing apparatus is selected from: expansion chamber silencing apparatus, resonance cavate silencing apparatus.
8. intake noise reduction filter according to claim 7 is characterized in that: described silencing apparatus is single-unit formula, double-joint type or multi-fold type silencing apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201707443U CN201180633Y (en) | 2007-11-13 | 2007-11-13 | Air-intake soundproof filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201707443U CN201180633Y (en) | 2007-11-13 | 2007-11-13 | Air-intake soundproof filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201180633Y true CN201180633Y (en) | 2009-01-14 |
Family
ID=40250134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201707443U Expired - Fee Related CN201180633Y (en) | 2007-11-13 | 2007-11-13 | Air-intake soundproof filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201180633Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853792A (en) * | 2012-12-17 | 2015-08-19 | 日本电产科宝电子株式会社 | Cpap device |
| CN108853666A (en) * | 2018-06-28 | 2018-11-23 | 张莹 | Ventilator for CPR |
| CN109841880A (en) * | 2017-11-29 | 2019-06-04 | 郑州宇通客车股份有限公司 | A kind of air processor and fuel cell system having both filtering, noise reduction |
| CN112392693A (en) * | 2020-10-26 | 2021-02-23 | 杭州钱江制冷压缩机集团有限公司 | A kind of compressor |
-
2007
- 2007-11-13 CN CNU2007201707443U patent/CN201180633Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853792A (en) * | 2012-12-17 | 2015-08-19 | 日本电产科宝电子株式会社 | Cpap device |
| CN109841880A (en) * | 2017-11-29 | 2019-06-04 | 郑州宇通客车股份有限公司 | A kind of air processor and fuel cell system having both filtering, noise reduction |
| CN108853666A (en) * | 2018-06-28 | 2018-11-23 | 张莹 | Ventilator for CPR |
| CN112392693A (en) * | 2020-10-26 | 2021-02-23 | 杭州钱江制冷压缩机集团有限公司 | A kind of compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20151113 |
|
| EXPY | Termination of patent right or utility model |