CN209943036U

CN209943036U - Silencer and compressor

Info

Publication number: CN209943036U
Application number: CN201920411856.6U
Authority: CN
Inventors: 刘小强; 季盛昌; 耿玮
Original assignee: Shanghai Highly Electrical Appliances Co Ltd
Current assignee: Shanghai Highly Electrical Appliances Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-01-14
Anticipated expiration: 2029-03-29

Abstract

The utility model provides a silencer, it is protruding including collection groove and drainage, collection groove covers on the sound outlet of treating the amortization object, with treat that the amortization object prescribes a limit to first amortization chamber, the drainage hole has been seted up to the cell wall in collection groove, the drainage is protruding to be covered on the drainage hole, with the outer wall in collection groove prescribes a limit to second amortization chamber, the edge in drainage hole is the cockscomb structure. Simultaneously the utility model discloses still provide one kind and include the compressor of muffler. The utility model provides a muffler can effectively reduce the air current vortex in the compressor makes the exhaust air current distribute evenly, thereby reduces the noise of compressor.

Description

Silencer and compressor

Technical Field

The utility model relates to compressor technical field especially involves a muffler and compressor.

Background

In the running process of the compressor, high-speed airflow is intermittently discharged, and pressure pulsation is caused when the airflow is discharged from an air cylinder and an exhaust hole of a cylinder cover, so that the noise of the compressor is caused. The main noise reduction method at present is the use of silencers. The existing silencer structure is shown in figure 1, a drainage bulge 11 exists in the silencer, and the drainage bulge 11 is communicated with a circular drainage hole 12, so that noise can be reduced to a certain extent. However, the circular drainage holes 12 cannot effectively reduce the airflow vortex, and the exhaust airflow distribution is relatively disordered, so that the noise reduction effect is poor. With the increasing requirements of people on the silencing of the compressor, the existing rotary compressor silencer cannot meet the requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a silencer, it is protruding including collection groove and drainage, collection groove covers on the sound outlet of treating the amortization object, with treat that the amortization object is injectd first amortization chamber, the drainage hole has been seted up to the cell wall in collection groove, the drainage is protruding to be covered on the drainage hole, with the outer wall in collection groove is injectd the second amortization chamber, the edge in drainage hole is the cockscomb structure.

Preferably, the number of the drainage bulges is the same as that of the drainage holes, and the drainage bulges are communicated in a one-to-one correspondence manner.

Preferably, the drainage holes are a plurality of and are uniformly and circumferentially arranged on the groove wall of the flow collecting groove.

Preferably, the sawteeth on the drainage hole and the sawteeth are arc-shaped.

Preferably, the saw teeth on the drainage hole are provided in plurality and are uniformly distributed.

Preferably, the inner wall of the collecting groove is a cambered surface.

Preferably, one end of the drainage bulge, which is far away from the drainage hole, is provided with an opening.

Preferably, the opening forms an included angle with the drainage hole.

The utility model also provides a compressor, include muffler, casing, motor and pump body part, pump body part includes cylinder, bent axle, goes up cylinder cap and lower cylinder cap, go up cylinder cap or/and be equipped with the cylinder cap gas vent down on the cylinder cap, the collection chute covers on the cylinder gas vent, with go up cylinder cap or/and the cylinder cap is injectd down first amortization chamber.

Preferably, an installation part is connected to the groove bottom of the flow collecting groove, an installation through hole is formed in the installation part, the installation through hole is matched with the flange part of the upper cylinder cover or/and the lower cylinder cover, and the flange part of the upper cylinder cover or/and the lower cylinder cover is connected in the installation through hole in a penetrating mode.

To sum up, in the muffler, the collection groove covers on the sound outlet of treating the amortization object, with treat that the amortization object prescribes a limit to first amortization chamber, the drainage arch covers on the drainage hole on the collection groove, with the outer wall in collection groove prescribes a limit to second amortization chamber, and first amortization chamber can reduce exhaust noise with second amortization chamber. The edge of the drainage hole is arranged to be zigzag, so that airflow vortex in the drainage hole is reduced, exhaust airflow is distributed uniformly, and noise of the compressor is reduced. Furthermore, the drainage holes are provided in a plurality, so that the silencing capability is enhanced. Furthermore, the number of the sawteeth on the drainage hole is multiple, so that different silencing effects of the silencer can be achieved. Furthermore, the sawteeth on the drainage hole and the sawteeth are arranged in an arc shape, so that the air flow is discharged more smoothly and uniformly. And simultaneously the utility model provides a compressor includes on the cylinder gas vent of muffler, the collection groove cover on the muffler on the compressor, inject with last cylinder cap or/and lower cylinder cap first amortization chamber has strengthened the amortization function.

Drawings

FIG. 1 is a schematic view of a muffler of the prior art;

fig. 2 is a schematic structural diagram of a muffler according to a first embodiment of the present invention;

FIG. 3 is an axial cross-sectional view of the muffler shown in FIG. 2;

FIG. 4 is a partial sectional view of the muffler of FIG. 2 installed in a compressor;

fig. 5 is a schematic structural diagram of a muffler according to a second embodiment of the present invention;

FIG. 6 is an axial cross-sectional view of the muffler shown in FIG. 5;

in FIG. 1, 11-drainage protrusions, 12-drainage holes;

in FIGS. 2-6, 21-flow guide projection, 22-flow collecting groove, 23-flow guide hole, 24-exhaust port, 30-crankshaft, 31 a-upper silencer, 31 b-lower silencer, 32 a-upper cylinder cover, 32 b-lower cylinder cover, 33 a-upper cylinder and 33 b-lower cylinder.

Detailed Description

The utility model discloses a core thought lies in providing a muffler and compressor, reduces the air current vortex through optimizing muffler drainage pore structure, makes the exhaust air current distribute more evenly to reduce the noise of compressor.

In order to realize the idea, the utility model provides a silencer, it is protruding including collection groove and drainage, the drainage hole has been seted up to the cell wall in collection groove, the drainage arch covers on the drainage hole, the edge in drainage hole is the cockscomb structure. The shape of the drainage hole can reduce airflow vortex, so that exhaust airflow is distributed more uniformly, and the noise of the compressor is reduced. The utility model discloses it makes an uproar to be particularly useful for rotary compressor. And simultaneously, the utility model also provides a compressor of using above-mentioned muffler.

In order to make the objects, advantages and features of the present invention clearer, the silencer of the compressor of the present invention will be described in further detail with reference to fig. 2-6. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

Example one

As shown in fig. 2, it is a schematic structural diagram of the silencer provided in this embodiment.

The muffler in this embodiment includes that collection groove 22 and drainage are protruding 21, collection groove 22 covers on the sound outlet of treating the amortization object, with treat the amortization object and inject first amortization chamber, drainage hole 23 has been seted up to collection groove 22's cell wall, drainage is protruding 21 to be covered on the drainage hole 23, with collection groove 22's outer wall inject the second amortization chamber, the edge of drainage hole 23 is the cockscomb structure.

The number of the drainage holes 23 is 3, the drainage holes are uniformly and circumferentially arranged on the wall of the collecting groove 22, and meanwhile, the number of the drainage protrusions 21 is the same as that of the drainage holes 23, and the drainage protrusions are communicated in a one-to-one correspondence manner, so that the silencing effect can be further enhanced. Of course, the number of the drainage protrusions 21 can be multiple, and preferably, three or more drainage protrusions can generate better silencing effect.

As shown in fig. 2, the number of the saw teeth on the single drainage hole 23 is 6, and the saw teeth are arc-shaped, so as to improve the noise reduction effect. Of course, the number of the serrations on a single vent 23 may be plural, and preferably, the number of the serrations on a single vent is six or more.

Meanwhile, the inner wall of the collecting groove 22 is a cambered surface.

In addition, the end of the drainage bulge 21 far away from the drainage hole 23 is provided with an opening for discharging gas. Moreover, a certain included angle is formed between the opening and the drainage hole 23.

Referring to fig. 4, a partial view of the muffler of fig. 2 installed in the compressor is shown. The main structure in fig. 4 is a pump body part of the compressor, the pump body part includes an upper cylinder 33a, a lower cylinder 33b, a crankshaft 30, an upper cylinder cover 32a and a lower cylinder cover 32b, cylinder exhaust ports are provided on the upper cylinder cover 32a and the lower cylinder cover 32b, collecting grooves of an upper silencer 31a and a lower silencer 31b are respectively covered on the exhaust ports of the upper cylinder and the lower cylinder, and a first silencing cavity is defined by the upper cylinder cover 32a and the lower cylinder cover 32 b.

The tank bottom connection installed part of collecting groove on the muffler has seted up the installation through-hole on the installed part, the installation through-hole with the flange portion looks adaptation of upper cylinder cap 32a and lower cylinder cap 32b, the flange portion cross-under of upper cylinder cap 32a and lower cylinder cap 32b is in the installation through-hole.

Fig. 4 is a partial sectional view of a dual cylinder compressor. It should be understood that the muffler of the present invention can also be installed in a single cylinder compressor, and the present embodiment is not described in detail.

Example two

The difference from the above embodiment is: the muffler of the compressor of the embodiment is provided with the drainage holes 23 with different numbers, and the zigzag shapes of the drainage holes 23 are different. Specifically, as shown in fig. 4, fig. 4 is a schematic structural diagram of a muffler of the compressor of the present embodiment.

The muffler of the compressor shown in fig. 4 is provided with 4 drainage holes 23. The drainage holes 23 are uniformly and circumferentially arranged on the wall of the collecting groove 22. The sawtooth at the edge of the drainage hole 23 is 8 convex arc-shaped sawteeth. The number of the drainage protrusions 21 in this embodiment is 4, and the drainage protrusions are respectively communicated with the drainage holes 23 in a one-to-one correspondence manner.

The inventors have found that different types of compressors produce different noise and therefore require different types of compressor mufflers. And the drainage holes with different numbers or different sawtooth shapes can influence the silencing effect of the silencer.

To sum up, the utility model discloses an among the muffler of compressor, through inciting somebody to action the shape in drainage hole sets up to the zigzag for the air current vortex reduces, and the exhaust air current distributes evenly, and then reduces the noise of compressor. Furthermore, the quantity of drainage holes can be a plurality of, evenly arrange circumferentially on the cell wall of collection groove, simultaneously the bellied quantity of drainage with the quantity of drainage holes is the same, just the drainage holes respectively with the protruding one-to-one of drainage is linked together, can make like this the muffler reach different noise cancelling effect. Furthermore, the number of the sawteeth on the drainage hole can be multiple, and different silencing effects can be achieved.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims

1. The utility model provides a muffler, its characterized in that, is protruding including collection groove and drainage, collection groove covers on the sound outlet of treating the amortization object, with treat that the amortization object prescribes a limit to first amortization chamber, the drainage hole has been seted up to the cell wall in collection groove, the drainage is protruding to be covered on the drainage hole, with the outer wall in collection groove prescribes a limit to second amortization chamber, the edge in drainage hole is the cockscomb structure.

2. The muffler of claim 1, wherein the number of the drainage protrusions is the same as the number of the drainage holes, and the drainage protrusions are in one-to-one correspondence with the drainage holes.

3. The silencer of claim 2, wherein the plurality of drainage holes are uniformly circumferentially arranged in the wall of the collecting groove.

4. The silencer of claim 1, wherein the serrations on the vent and between the serrations are arcuate.

5. The silencer of claim 1, wherein the serrations on the drainage holes are provided in plurality and uniformly distributed.

6. The muffler of claim 1, wherein an inner wall of the collecting groove is a curved surface.

7. The muffler of claim 1, wherein an end of the drainage projection remote from the drainage aperture is provided with an opening.

8. The muffler of claim 7, wherein the opening forms an angle with the vent.

9. A compressor, comprising the muffler, the housing, the motor and the pump body according to any one of claims 1 to 8, wherein the pump body comprises a cylinder, a crankshaft, an upper cylinder cover and a lower cylinder cover, the upper cylinder cover and/or the lower cylinder cover is provided with a cylinder cover exhaust port, and the collecting groove covers the cylinder exhaust port and defines the first muffling chamber with the upper cylinder cover and/or the lower cylinder cover.

10. The compressor as claimed in claim 9, wherein the trough bottom of the collecting trough is connected to a mounting member, the mounting member is provided with a mounting through hole, the mounting through hole is matched with the flange part of the upper cylinder cover or/and the lower cylinder cover, and the flange part of the upper cylinder cover or/and the lower cylinder cover is penetrated in the mounting through hole.