CN212979796U

CN212979796U - Silencer and air conditioning system comprising same

Info

Publication number: CN212979796U
Application number: CN202021577430.7U
Authority: CN
Inventors: 刘荣
Original assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Current assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-04-16
Anticipated expiration: 2030-08-03

Abstract

The utility model relates to a muffler reaches air conditioning system including it. The muffler includes: a pipe body; and a sleeve arranged on the outer surface of the tube body and partitioned into a plurality of chambers between the sleeve and the tube body, wherein the tube body has openings on the wall, and each of the chambers is open to the interior of the tube body through at least one of the openings.

Description

Silencer and air conditioning system comprising same

Technical Field

The utility model relates to the field of automobile part manufacturing; more particularly, the present invention relates to a muffler, and further relates to an air conditioning system including the same.

Background

With continuous breakthrough and innovation of the technology in the automobile field and higher requirements of automobile terminal users on comfort level in the automobile, especially for pure electric automobiles with new energy, noise in the automobile is one of the very important indexes.

The operation of the air conditioning system has a great influence on the NVH evaluation of the whole vehicle.

SUMMERY OF THE UTILITY MODEL

It is an object of one aspect of the present invention to provide an improved muffler.

It is an object of another aspect of the present invention to provide an improved air conditioning system.

In order to achieve the above object, an aspect of the present invention provides a muffler, including:

a pipe body; and

a sleeve disposed on an outer surface of the tube body and partitioned into a plurality of chambers between the sleeve and the tube body,

wherein the tube has apertures in a wall thereof, each of the chambers being open to the interior of the tube through at least one of the apertures.

Alternatively, in the muffler as described above, the chamber and the opening are uniformly arranged in the axial direction of the pipe body.

Alternatively, in the muffler as described above, the openings of the chamber are staggered for each adjacent two openings.

Alternatively, in the muffler as described above, the opening is in the shape of a regular polygon.

Alternatively, in the muffler as described above, the opening has 3 to 8 sides, and the sides are 0.5 mm to 10 mm in length.

Optionally, in the silencer as described above, the material of the pipe body and/or the sleeve is aluminum or an aluminum alloy.

Alternatively, in the muffler as described above, each of the openings is the same size.

Optionally, in the muffler as described above, the plurality of chambers are the same size and are each independent.

In order to achieve the above object, another aspect of the present invention provides an air conditioning system including the muffler according to any one of the preceding aspects.

Alternatively, in the air conditioning system as described above, the muffler is mounted on a low pressure line connected to a compressor of the air conditioning system.

Drawings

The disclosure of the present invention will be more apparent with reference to the accompanying drawings. It is to be understood that these drawings are solely for purposes of illustration and are not intended as a definition of the limits of the invention. In the figure:

fig. 1 schematically shows a muffler according to an embodiment of the present invention;

FIG. 2 schematically illustrates a cross-sectional view of the muffler of FIG. 1;

FIG. 3 schematically illustrates a cross-sectional view of the muffler of FIG. 1 in an angled position.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding features.

Fig. 1 schematically shows a silencer according to an embodiment of the invention.

As shown in fig. 1, the muffler 10 includes a pipe body 11 and a sleeve 12, and both ends of the pipe body 11 are an inlet and an outlet, respectively. In this example, the tubular body and the sleeve are both circular tubes; in alternative embodiments, the tube may take on other shapes. As can be seen, the sleeve 12 is fitted over the outer surface of the tubular body 11. The pipe body and/or the sleeve can be made of aluminum or aluminum alloy, so that rustiness is avoided, and weight reduction and emission reduction are facilitated.

The muffler 10 may be installed in an air conditioning system, such as an automotive air conditioning system. In one embodiment, the muffler may be mounted on a low pressure line connected to a compressor of an air conditioning system. When the air conditioner is installed in an automobile air conditioning system, the pneumatic noise generated when the air conditioning system operates can be reduced, the noise outside the automobile is effectively reduced and transmitted into the automobile, and the air conditioner is suitable for meeting higher and higher comfort requirements.

Fig. 2 schematically shows a cross-sectional view of the silencer of fig. 1. FIG. 3 schematically illustrates a cross-sectional view of the muffler of FIG. 1 in an angled position. The internal structure of the muffler 10, i.e., the internal structure of the pipe body 11 and the sleeve 12 included in the muffler 10, can be seen more clearly in fig. 2 and 3.

As shown, the sleeve 12 is disposed on the outer surface of the tube body 11, and the sleeve 12 and the tube body 11 are partitioned into a plurality of chambers 13 therebetween. The wall of the tube 11 has openings 14, and each of the chambers 13 opens into the interior of the tube 11 through at least one of the openings 14. Such a chamber 13 constitutes a resonance chamber, enabling an advantageous sound-damping operation.

For example, the tube 11 has an inlet and an outlet at its two ends, and the air flow can enter the inner cavity through the inlet and flow out through the outlet. The chambers 13 of the sleeve 12 are arranged on the outer surface of the tubular body 11, forming a plurality of resonant chambers which are closed to the tubular body and act as noise reducing means.

The opening at each resonant cavity forms an airflow channel to allow air to enter and flow out, the resonant cavity is communicated with the inner cavity of the tube body 11 through the airflow channel, so that airflow in the inner cavity can enter the resonant cavity through the airflow channel to circulate and then flow out through the airflow channel, and meanwhile, for the flowing airflow, wave crests can be reduced to reduce airflow pulsation and pneumatic noise.

In this embodiment, the plurality of chambers 13 may have the same size and be independent of each other, which is advantageous for uniform opening and stable noise absorption. In other embodiments, the plurality of chambers 13 may be sized differently or each may not be completely independent.

In the illustrated embodiment, the chamber 13 and the openings 14 are uniformly arranged in the axial direction of the pipe body, and can absorb the pulsation vibration noise caused by the suction of the compressor. In other embodiments, the chamber 13 and the opening 14 may not be uniformly distributed along the axial direction of the tube.

In the illustrated embodiment, each adjacent two of the openings 14 in the chamber 13 are respectively staggered, so that the noise of the suction pulsation is fluctuated, like a sine wave, and the absorption effect is better. In other embodiments, two corresponding openings 14 in the chamber 13 may be aligned with each other.

In the illustrated embodiment, the apertures 14 are square in shape. In other embodiments, the opening hole can be in a regular polygon with other sides, for example, the opening hole can have 3 to 8 sides, the noise absorption effect is good, and the processing technology is easy to realize. The sides of the openings may be 0.5 mm to 10 mm. The size of each opening 14 may be the same for ease of manufacturing, increased manufacturing cost and efficiency, and the same size of each opening may also contribute to a stable noise absorption effect.

The utility model discloses still relate to an air conditioning system, this air conditioning system can include as in any preceding embodiment the muffler. The muffler may be mounted on a low pressure line connected to a compressor of an air conditioning system. According to the utility model discloses a muffler reasonable in design, simple structure of aforementioned embodiment can reduce for example by the aerodynamic noise that vehicle air conditioning system produced because of the low pressure refrigerant, and then has alleviated the influence of air noise to the interior noise of car, has had obvious improvement to whole car NVH performance.

The technical scope of the present invention is not limited to the above description, and those skilled in the art can make various modifications and alterations to the above embodiments without departing from the technical spirit of the present invention, and all such modifications and alterations should fall within the scope of the present invention.

Claims

1. A muffler, characterized in that the muffler comprises:

a pipe body; and

2. The muffler of claim 1 wherein the chamber and the opening are uniformly arranged in an axial direction of the pipe body.

3. The muffler of claim 1 wherein each adjacent two of the corresponding openings in the chamber are staggered.

4. The muffler of claim 1 wherein the opening is in the shape of a regular polygon.

5. The muffler of claim 4 wherein the opening has 3 to 8 sides and a side length of 0.5 mm to 10 mm.

6. The muffler of claim 1 wherein the material of the pipe body and/or the sleeve is aluminum or an aluminum alloy.

7. The muffler of claim 1 wherein each of said openings is the same size.

8. The muffler of claim 1 wherein the plurality of chambers are the same size and are independent of each other.

9. An air conditioning system, characterized in that it comprises a silencer according to any of the preceding claims 1 to 8.

10. The air conditioning system of claim 9, wherein the muffler is mounted on a low pressure line connected to a compressor of the air conditioning system.