CN213144748U - Compressor - Google Patents

Abstract

The utility model provides a compressor, include: the air cylinder is provided with a vane groove and a first exhaust port, the vane groove is symmetrical about a first central line, a straight line passing through the curvature center of the outer peripheral outline of the first exhaust port and the curvature center of the inner peripheral outline of the air cylinder is a first straight line, and a first included angle is formed between the first straight line and the first central line; the silencer is provided with a second exhaust hole, the plane of the lower end face of the silencer is a first plane, a straight line passing through the projection of the curvature center of the peripheral outline of the second exhaust hole on the first plane and the central point of the lower end face of the silencer is a second straight line, a second included angle is formed between the projection of the first central line on the first plane and the second straight line, and the difference between the second included angle and the first included angle is more than or equal to 22 degrees and less than or equal to 28 degrees; the method and the device reduce the noise of the compressor in the frequency range of 800-1200 Hz.

Description

Compressor

Technical Field

The utility model relates to a compressor technical field, specifically speaking relates to a compressor.

Background

In the prior art, the problem of noise transmission is found in a wall resonance experiment of an air conditioner, and the noise of a compressor in the frequency range of 800Hz-1200Hz is found through frequency spectrum analysis. The existing silencer for the compressor has insufficient transmission loss in the frequency range, which results in higher noise value.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a compressor, which reduces the noise in the frequency range of 800Hz-1200Hz when the air conditioner compressor works.

According to an aspect of the present invention, there is provided a compressor, including:

the air cylinder is provided with a vane groove and a first exhaust port, the vane groove is symmetrical about a first central line, a straight line passing through the curvature center of the outer peripheral outline of the first exhaust port and the curvature center of the inner peripheral outline of the air cylinder is a first straight line, and a first included angle is formed between the first straight line and the first central line; and

the muffler is equipped with the second exhaust hole, the lower terminal surface place plane of muffler is first plane, through the curvature center of the periphery profile in second exhaust hole is in projection on the first plane with the straight line of the central point of terminal surface is the second straight line under the muffler, first central line is in projection on the first plane with form the second contained angle between the second straight line, the second contained angle with difference more than or equal to 22 and less than or equal to 28 between the first contained angle.

Preferably, the radius of curvature of the outer peripheral profile of the first exhaust port is R1, the radius of curvature of the outer peripheral profile of the second exhaust port is R2, and the ratio of R1 to R2 is 0.4 or more and 0.6 or less.

Preferably, the radius of curvature R2 of the outer peripheral profile of the second vent hole is 5.5mm or more and 7.5mm or less.

Preferably, the second included angle is greater than or equal to 30 ° and less than or equal to 40 °.

Preferably, the muffler is provided at an upper side of an upper cylinder head of the compressor.

Preferably, a partial region of the inner wall of the muffler is convexly formed to the second exhaust hole.

Preferably, the first straight line and the second straight line are both parallel to the end face of the cylinder.

Preferably, the second included angle is greater than the first included angle.

Preferably, the compressor is a rolling rotor compressor.

Compared with the prior art, the utility model beneficial effect lie in:

the utility model provides a compressor is through optimizing the angle between second exhaust hole and the first central line to and the difference of the angle between first exhaust hole and the first central line, under the condition that does not influence the compressor performance, has reduced its noise in 800 types of sand 1200Hz frequency channel within range.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a sectional view of a compressor according to an embodiment of the present invention;

fig. 2 is a schematic view of a cylinder in a compressor disclosed in an embodiment of the present invention;

fig. 3 is a schematic view of a muffler in a compressor according to an embodiment of the present invention;

fig. 4 is a comparison graph of the effect of noise transmission loss compared with the prior art according to the technical solution disclosed in the embodiment of the present invention.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, materials, devices, etc. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising," "having," and "providing" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

As shown in fig. 1, the present invention discloses a compressor, which comprises a cylinder 101 and a silencer 201. The muffler 201 is an upper muffler, i.e., is located on the upper side of the upper cylinder head 301.

As shown in fig. 2, the cylinder 101 is disposed between the upper cylinder head 301 and the lower cylinder head 104, and the upper cylinder head 301 is mounted to the upper end of the cylinder 101 in the axial direction and contacts the upper end surface of the cylinder 101. The lower cylinder head 104 is mounted to the axial lower end of the cylinder 101 and contacts the lower end surface of the cylinder 101. The upper cylinder cover 301 and the lower cylinder cover 104 are both provided with exhaust holes (not shown in the figure).

In this embodiment, the cylinder 101 is provided with vane grooves 102 and a first exhaust port 103. The vane grooves 102 are symmetrical about the first center line. The first exhaust port 103 is a chamfered opening (also referred to as DV opening) formed by extending partially outward from the inner wall, and the first exhaust port 103 is used as an exhaust guide structure and is communicated with the exhaust holes of the upper cylinder cover 301 and the lower cylinder cover 104 in a matching manner to realize exhaust.

A straight line passing through the center of curvature of the outer peripheral contour of the first exhaust port 103 and the center of curvature of the inner peripheral contour of the cylinder 101 is a first straight line. That is, the center of curvature of the outer peripheral contour of the first exhaust port 103 and the center of curvature of the inner peripheral contour of the cylinder 101 define the above-described first straight line. And the first straight line is parallel to the end surface of the cylinder 101. A first included angle is formed between the first straight line and the first central line.

As shown in fig. 3, in this embodiment, the muffler 201 is provided with a second exhaust hole 202. The second exhaust hole 202 is formed by the local area of the inner wall of the silencer 201 protruding outwards, the second exhaust hole 202 is communicated with the exhaust hole arranged on the upper cylinder cover 301, and in the exhaust process, gas is exhausted to the space above the silencer 201.

The plane of the lower end surface of the muffler 201 is a first plane. A straight line passing through a projection of the center of curvature of the outer circumferential contour of the second exhaust hole 202 on the first plane and the center point of the lower end surface of the muffler 201 is a second straight line, that is, a projection of the center of curvature of the outer circumferential contour of the second exhaust hole 202 on the first plane and the center point of the lower end surface of the muffler 201 define the second straight line. And the second line is parallel to the end surface of the cylinder 101. Wherein, the outline of the lower end surface of the silencer 201 is round.

A projection of the first center line on the first plane forms a second included angle with the second straight line. The second included angle is larger than the first included angle. The difference between the second angle and the first angle is greater than or equal to 22 ° and less than or equal to 28 °. Therefore, the noise within the frequency range of 800-1200Hz when the compressor works is reduced by optimizing the relation between the second included angle and the first included angle.

In this embodiment, the radius of curvature of the outer peripheral contour of the first exhaust port 103 is R1, the radius of curvature of the outer peripheral contour of the second exhaust port 202 is R2, and the ratio of R1 to R2 is 0.4 or more and 0.6 or less. By optimizing the relation between the radius of the first exhaust hole 103 and the radius of the second exhaust hole 202, the noise in the frequency range of 800-1200Hz when the compressor works can be reduced.

In the present embodiment, the compressor is a rolling rotor compressor.

In another preferred embodiment of the present application, the radius of curvature R2 of the outer peripheral contour of the second exhaust hole 202 is equal to or greater than 5.5mm and equal to or less than 7.5 mm. By setting the radius of the second exhaust hole 202 on the silencer 201, the noise of the compressor in the frequency range of 800-1200Hz can be reduced.

In another preferred embodiment of the present application, a second included angle formed between a projection of the first center line on the first plane and the second straight line is greater than or equal to 30 ° and less than or equal to 40 °. The second included angle of the second exhaust hole 202 on the silencer 201 is set, so that the noise of the compressor in the range of 800-1200Hz frequency band can be reduced.

Fig. 4 is a comparison graph of the effect of noise transmission loss compared with the prior art according to the technical solution disclosed in the embodiment of the present invention. Wherein, the dotted line represents the technical scheme of the utility model, and the solid line represents the scheme of prior art. Referring to fig. 4, it is verified through experiments that, compared with a compressor with the same specification in the prior art (i.e., a compressor before improvement), after the technical solution provided by the present application is used, the transmission loss of noise in the 800-1200Hz frequency band through the muffler is greater than that in the prior art, so that the noise of the compressor in the frequency band range is reduced by 7 db, that is, the noise in the frequency band is reduced by 10%, which proves that the technical solution of the present application is effective.

To sum up, the utility model discloses a compressor has following advantage at least:

the compressor disclosed by the embodiment optimizes the difference value of the angle between the second exhaust hole and the first central line and the angle between the first exhaust hole and the first central line, and reduces the noise within the frequency range of 800-1200Hz without affecting the performance of the compressor.

In the description of the present invention, it is to be understood that the terms "bottom", "longitudinal", "lateral", "up", "down", "front", "back", "vertical", "horizontal", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the structures or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more and "several" means one or more unless otherwise specified.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (9)

1. A compressor, comprising:

the air cylinder is provided with a vane groove and a first exhaust port, the vane groove is symmetrical about a first central line, a straight line passing through the curvature center of the outer peripheral outline of the first exhaust port and the curvature center of the inner peripheral outline of the air cylinder is a first straight line, and a first included angle is formed between the first straight line and the first central line; and

the muffler is equipped with the second exhaust hole, the lower terminal surface place plane of muffler is first plane, through the curvature center of the periphery profile in second exhaust hole is in projection on the first plane with the straight line of the central point of terminal surface is the second straight line under the muffler, first central line is in projection on the first plane with form the second contained angle between the second straight line, the second contained angle with difference more than or equal to 22 and less than or equal to 28 between the first contained angle.

2. The compressor of claim 1, wherein a radius of curvature of the outer circumferential profile of the first discharge port is R1, a radius of curvature of the outer circumferential profile of the second discharge port is R2, and a ratio of R1 to R2 is 0.4 or more and 0.6 or less.

3. The compressor of claim 2, wherein a radius of curvature R2 of an outer circumferential profile of the second discharge hole is 5.5mm or more and 7.5mm or less.

4. The compressor of claim 1, wherein the second included angle is greater than or equal to 30 ° and less than or equal to 40 °.

5. The compressor of claim 1, wherein the muffler is provided at an upper side of an upper cylinder head of the compressor.

6. The compressor of claim 1, wherein a partial area of an inner wall of the muffler is convexly formed to the second discharge hole.

7. The compressor of claim 1, wherein the first line and the second line are both parallel to an end face of the cylinder.

8. The compressor of claim 1, wherein the second included angle is greater than the first included angle.

9. The compressor of claim 1, wherein the compressor is a rolling rotor compressor.

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