CN220981457U - Low-resistance filtering muffler - Google Patents
Low-resistance filtering muffler Download PDFInfo
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- CN220981457U CN220981457U CN202322571576.0U CN202322571576U CN220981457U CN 220981457 U CN220981457 U CN 220981457U CN 202322571576 U CN202322571576 U CN 202322571576U CN 220981457 U CN220981457 U CN 220981457U
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- 238000001914 filtration Methods 0.000 title claims abstract description 22
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000003584 silencer Effects 0.000 claims description 3
- 230000008030 elimination Effects 0.000 abstract description 10
- 238000003379 elimination reaction Methods 0.000 abstract description 10
- 230000000149 penetrating effect Effects 0.000 abstract description 8
- 230000030279 gene silencing Effects 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000003507 refrigerant Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a low-resistance filtering muffler, which comprises a shell, wherein the upper end of the shell is provided with an air inlet in a penetrating way, the lower end of the shell is correspondingly provided with a connecting shell, the lower end of the connecting shell is provided with an air outlet in a penetrating way, the interior of the shell is fixedly connected with a third annular disc, a plurality of second through holes are formed in the third annular disc in a penetrating way, and when the air flow is smaller, the air flow entering the interior of the shell through the inlet of the shell changes the area ratio of the cross section through the third annular disc in the interior, so that the muffler is realized; when the airflow is large, a part of the airflow enters the inside of the cylinder body, so that the cross-sectional area ratio is changed, and the silencing is realized; the rest part of air flow flows through the through holes on the annular disc, and the cross-section area ratio is changed, so that noise elimination is realized, and the filter screen is combined for use by setting the proper cross-section area ratio and the length of the expansion chamber, so that low-frequency noise in the air flow is effectively eliminated, and the purpose of filtering and noise reduction is realized.
Description
Technical Field
The utility model relates to the field of silencers, in particular to a low-resistance filtering silencer.
Background
As people use air conditioners more and more frequently in work and life, people complain about air conditioner noise more and more, and especially in a refrigerating season, users are particularly concentrated about noise complaints generated by indoor units. Some of the reasons for noise generated by the indoor unit are that refrigerant flowing noise is generated when the refrigerant flows in the refrigerant flow channel. At present, regarding the mechanism of generating the flowing sound of the refrigerant, the industry generally considers that the generating of the flowing sound of the refrigerant has an important relation with the flow state of the refrigerant, and the flowing sound of the refrigerant is easy to generate when the refrigerant flows in a gas-liquid two-phase state.
In the field of household air conditioner manufacturing, in order to improve energy efficiency, the air conditioner uses a frequency conversion technology. The variable frequency air conditioner is used for adjusting the running frequency of the compressor according to the load of a room, so as to meet different load requirements. The inverter compressor may generate abnormal noise when operating at different frequencies, and the noise is transferred into the indoor side through the flow of the refrigerant, thereby affecting the rest or learning of the user in the indoor side, and the like. To eliminate noise, a muffler is often added to the compressor piping. The existing muffler can only realize the maximum noise elimination amount for one frequency, so that the existing muffler cannot eliminate different noises generated by variable frequency machines due to different working frequencies.
Disclosure of utility model
The utility model aims to provide a low-resistance filtering muffler, which solves the problem that the existing muffler can only maximally eliminate noise of one frequency, so that the existing muffler cannot eliminate different noises generated by variable frequency machines due to different working frequencies.
In order to achieve the above purpose, the utility model adopts the following technical scheme that the low-resistance filtering muffler comprises a shell, wherein the upper end of the shell is provided with an air inlet in a penetrating way, the lower end of the shell is correspondingly provided with a connecting shell, the lower end of the connecting shell is provided with an air outlet in a penetrating way, the interior of the shell is fixedly connected with a third annular disc, and a plurality of second through holes are formed in the third annular disc in a penetrating way;
The lower extreme of third annular disk is provided with first annular disk, the middle part of first annular disk is provided with the second barrel.
As a further description of the above technical solution: the lower extreme of first annular disk corresponds and is provided with the second annular disk, the middle part of second annular disk is provided with first barrel.
As a further description of the above technical solution: the first annular disc and the second annular disc are internally provided with a plurality of first through holes in a penetrating way.
As a further description of the above technical solution: the lower extreme fixedly connected with stopper of casing, the inside of coupling shell is provided with the spacing groove, stopper and spacing groove correspond each other.
As a further description of the above technical solution: and the limiting block is connected with the inner threads of the limiting groove through positioning bolts.
As a further description of the above technical solution: the inside of connecting the shell corresponds and is provided with the mounting panel, the inner fixedly connected with filter screen of mounting panel, the inside of mounting panel is provided with the constant head tank.
As a further description of the above technical solution: the outside sliding connection of coupling shell has the bolt, the bolt corresponds with the constant head tank, and the cover is equipped with the spring on the bolt.
The utility model has the following beneficial effects:
1. Compared with the prior art, when the airflow is smaller, the airflow entering the interior of the shell through the inlet of the shell changes the cross-sectional area ratio through the third annular disk in the interior, so that the silencing is realized; when the airflow is large, a part of the airflow enters the inside of the cylinder body, so that the cross-sectional area ratio is changed, and the silencing is realized; the rest part of the air flow flows through the through holes on the annular disc, noise elimination is realized by changing the cross-sectional area ratio, and the low-frequency noise in the air flow is effectively eliminated by setting the proper cross-sectional area ratio and the length of the expansion chamber and combining with the filter screen for use, so that the purpose of filtering and noise reduction is realized;
2. Compared with the prior art, this low resistance filtering muffler can conveniently dismantle the clearance to inside filter screen through setting up stopper, spacing groove, bolt and constant head tank, ensures the filter effect of whole noise elimination subassembly.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described below with reference to the drawings and examples;
FIG. 1 is a schematic view of the overall structure of a low resistance filter muffler according to the present utility model;
FIG. 2 is a schematic diagram of the structure of FIG. 1A;
FIG. 3 is a schematic view of the installation structure of a low resistance filtering muffler according to the present utility model;
Fig. 4 is a schematic view of a third annular disc structure of a low resistance filtering muffler according to the present utility model.
Legend description:
1. An air inlet; 2. a housing; 3. a first annular disc; 4. a second annular disc; 5. a filter screen; 6. an air outlet; 7. a connection housing; 8. a first through hole; 9. a first cylinder; 10. a second cylinder; 11. a third annular disc; 12. a second through hole; 13. a plug pin; 14. a spring; 15. a mounting plate; 16. a limiting block; 17. a positioning groove; 18. positioning bolts; 19. and a limit groove.
Detailed Description
Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.
Referring to fig. 1-4, one embodiment provided by the present utility model is: the utility model provides a low resistance filtering muffler, including casing 2, the upper end of casing 2 has run through and has seted up air inlet 1, can make the air current enter into the inside of casing 2 through air inlet 1, the lower extreme of casing 2 corresponds and is provided with coupling shell 7, the lower extreme of coupling shell 7 runs through and is provided with gas outlet 6, the inside fixedly connected with third annular dish 11 of casing 2, the last a plurality of second through-holes 12 of having run through of third annular dish 11, change the cross-sectional area ratio through inside third annular dish 11 and second through-hole 12, thereby realize the noise elimination, casing 2 can be tubular structure, the both ends of casing 2 are used for switching on the refrigeration pipeline of air conditioner, let the refrigerant circulate in the expansion chamber, the abrupt change that causes the impedance in the acoustic propagation process through the abrupt change in pipeline cross-section produces reflection, interference of acoustic energy, thereby reduce by filtering muffler outwards radiating acoustic energy, in order to reach the noise elimination purpose;
The lower end of the third annular disc 11 is provided with a first annular disc 3, the middle part of the first annular disc 3 is provided with a second cylinder 10, the lower end of the first annular disc 3 is correspondingly provided with a second annular disc 4, the middle part of the second annular disc 4 is provided with a first cylinder 9, when the air flow is large, a part of the air flow enters the first cylinder 9 and the second cylinder 10 from the inside of the shell 2, and the cross-section area ratio is changed, so that noise elimination is realized; the rest part of the air flow flows through the first annular disc 4 and the first through hole 8 on the second annular disc 9 from the inside of the shell 2, and the cross-section area ratio is changed, so that the noise elimination is realized;
The first annular disc 3 and the second annular disc 4 are internally provided with a plurality of first through holes 8 in a penetrating way, and the cross section ratio can be changed through the matching of the two first through holes 8, so that the silencing effect is realized;
The lower end of the shell 2 is fixedly connected with a limiting block 16, a limiting groove 19 is formed in the connecting shell 7, the limiting block 16 corresponds to the limiting groove 19, positioning bolts 18 are connected to the limiting block 16 and the limiting groove 19 in a threaded manner, the shell 2 and the connecting shell 7 can be rapidly positioned and installed under the action of the limiting block 16 and the limiting groove 19, locking operation can be performed through the positioning bolts 18, and meanwhile sound insulation cotton is arranged in the limiting groove 19, so that sound insulation effect of the joint of the two can be ensured;
the inside of the connecting shell 7 is correspondingly provided with a mounting plate 15, the inner end of the mounting plate 15 is fixedly connected with a filter screen 5, the inside of the mounting plate 15 is provided with a positioning groove 17, the outside of the connecting shell 7 is slidably connected with a plug pin 13, the plug pin 13 corresponds to the positioning groove 17, the plug pin 13 is sleeved with a spring 14, when the filter screen 5 is dismounted, the plug pin 13 at the outside only needs to be pulled, the plug pin 13 can be moved outwards under the action of the spring 14, so that the filter screen 5 can be dismounted after leaving the positioning groove 17, thereby cleaning regularly, improving the filtering effect of the whole silencer,
Working principle: when the device is used, when the airflow is small, the airflow entering the interior of the shell 2 through the air inlet 1 of the shell 2 changes the cross-sectional area ratio through the third annular disc 11 and the second through hole 12 in the interior, so that the silencing is realized; when the airflow is large, a part of the airflow enters the first cylinder 9 and the second cylinder 10 from the inside of the shell 2, so that the cross-sectional area ratio is changed, and the noise elimination is realized; the rest part of the air flow flows through the first annular disc 4 and the first through hole 8 on the second annular disc 9 from the inside of the shell 2, and the cross-section area ratio is changed, so that the noise elimination is realized; the air flow flowing through the first through hole 8 and the two cylinders finally passes through the filter screen 5 and then flows out through the air outlet 6 of the shell 2, and then enters into a throttling device such as an expansion valve. The filtering muffler provided by the embodiment of the utility model has the advantages that the low-frequency noise in the air flow is effectively eliminated by setting the proper cross-section area ratio and the length of the expansion chamber and combining with the filter screen for use, so that the filtering noise reduction effect is realized.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (7)
1. The utility model provides a low resistance filters silencer, includes casing (2), its characterized in that, air inlet (1) has been run through to the upper end of casing (2), the lower extreme of casing (2) is provided with coupling shell (7) correspondingly, the lower extreme of coupling shell (7) is run through and is provided with gas outlet (6), the inside fixedly connected with third annular dish (11) of casing (2), run through on third annular dish (11) and have been seted up a plurality of second through-holes (12);
The lower extreme of third annular disk (11) is provided with first annular disk (3), the middle part of first annular disk (3) is provided with second barrel (10).
2. A low resistance filtering muffler according to claim 1, characterized in that the lower end of the first annular disc (3) is correspondingly provided with a second annular disc (4), and the middle part of the second annular disc (4) is provided with a first cylinder (9).
3. A low resistance filtering muffler according to claim 2, characterized in that the first annular disc (3) and the second annular disc (4) are internally perforated with a plurality of first through holes (8).
4. The low-resistance filtering muffler according to claim 1, wherein a limiting block (16) is fixedly connected to the lower end of the housing (2), a limiting groove (19) is formed in the connecting housing (7), and the limiting block (16) and the limiting groove (19) correspond to each other.
5. The low-resistance filtering muffler as claimed in claim 4, wherein the stopper (16) and the stopper groove (19) are internally screwed with a positioning bolt (18).
6. The low-resistance filtering muffler according to claim 1, wherein a mounting plate (15) is correspondingly arranged in the connecting shell (7), a filter screen (5) is fixedly connected to the inner end of the mounting plate (15), and a positioning groove (17) is formed in the mounting plate (15).
7. The low-resistance filtering muffler according to claim 6, wherein the outer side of the connecting shell (7) is slidably connected with a plug pin (13), the plug pin (13) corresponds to the positioning groove (17), and a spring (14) is sleeved on the plug pin (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322571576.0U CN220981457U (en) | 2023-09-21 | 2023-09-21 | Low-resistance filtering muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322571576.0U CN220981457U (en) | 2023-09-21 | 2023-09-21 | Low-resistance filtering muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220981457U true CN220981457U (en) | 2024-05-17 |
Family
ID=91061638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322571576.0U Active CN220981457U (en) | 2023-09-21 | 2023-09-21 | Low-resistance filtering muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220981457U (en) |
-
2023
- 2023-09-21 CN CN202322571576.0U patent/CN220981457U/en active Active
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