KR20230091152A - Silencers and air conditioners - Google Patents

Abstract

In the silencer and air conditioner, the silencer includes a cylinder body (1). A silencer cavity 11 is provided in the cylinder body 1. A silencing plate 2 is installed in the silencing cavity 11 . A position limiting protrusion 12 is installed on the inner wall of the noise cavity 11. The position limiting protrusions 12 come into contact with both sides of the silencer plate 2, and limit the movement of the silencer plate 2 within the silencer cavity 11. The position limiting protrusion 12 makes the connection between the silencer 2 and the cylinder body 1 more robust.

Description

Silencers and air conditioners

This application claims priority to a Chinese patent application filed on January 7, 2021, with application number 202120040590.6 and the title of the invention "Silencer and Air Conditioning Device". which is incorporated in its entirety into this application.

This application relates to the field of air conditioning accessories technology, and more particularly to silencers and air conditioning devices.

In the field of refrigeration technology, the problem of vibration and noise in air conditioner pipelines has become a major challenge in product development. In order to solve the above problems, a silencer is usually installed in the device to reduce the vibration noise of the air conditioner pipeline.

In order to further reduce the noise generated when the refrigerant medium passes through the silencer, a silencer may be installed in the cylinder body of the silencer. In addition, the fixing method of the silencer and the cylinder body is welding. However, welding is prone to problems such as poor welding and omission of welding, which lowers the connection strength between the silencer plate and the cylinder body. Due to the impact of the refrigerant medium, the connection point between the silencer and the cylinder body may break.

In view of this, it is necessary to provide a cylinder and an air conditioner in order to solve the problem of the prior art in which the connection between the silencer and the cylinder body is not sufficiently robust.

This application provides a silencer. The silencer includes a cylinder body. A silencer cavity is provided in the cylinder body. A silencing plate is installed in the silencing cavity. Position limiting protrusions are installed on the inner wall of the noise cavity. The position limiting projection abuts on both sides of the sound absorbing plate, and restricts the movement of the sound absorbing plate within the sound absorbing cavity.

In one embodiment of the present application, the position limiting protrusion is formed to protrude along the radial direction of the cylinder body from the side wall of the cylinder body. In this way, the processing difficulty of the position limiting protrusion is greatly reduced.

In one embodiment of the present application, the maximum height at which the position limiting protrusion protrudes from the inner wall of the noise cavity is 0.5 mm to 0.8 mm. If the maximum height at which the position limiting protrusion protrudes from the inner wall of the noise cavity is 0.5 mm or more, the position limiting protrusion is conducive to exhibiting a better noise effect on the sound deadening plate. In addition, if the maximum protruding height of the position limiting protrusion from the inner wall of the noise cavity is 0.8 mm or less, it helps to reduce the difficulty of processing the position limit protrusion.

In one embodiment of the present application, all of the position limiting protrusions that come into contact with one side of the silencer plate include a plurality of convex shells spaced apart from each other. The convex hull is uniformly distributed along the circumferential direction of the noise cavity. The processing difficulty of the convex hull is relatively low, and the processing degree of the cylinder body is not high, so that the cylinder body is prevented from breaking due to relatively large deformation.

In one embodiment of the present application, the silencer is installed in the middle of the cylinder body. A peripheral wall of the sound deadening plate abuts against an inner wall of the sound deadening cavity. A plurality of through holes are provided in the sound deadening plate, and the through holes pass through the sound deadening plate. In this way, the silencing plate has a better silencing effect.

In one embodiment of the present application, the noise plate includes a circular bottom plate and a side plate installed to surround the circumference of the bottom plate. The outer circumferential wall of the side plate is tightly fitted with the inner wall of the noise-cancelling cavity. Through this installation, the contact area between the sound absorbing plate and the inner wall of the sound absorbing cavity is enlarged, thereby making the connection between the sound absorbing plate and the inner wall of the sound emitting cavity more robust. In addition, due to the existence of the side plate, the silencer plate is not easily tilted during the installation process, and the assembly accuracy of the entire silencer is improved.

The through holes are centrally distributed in the central region of the bottom plate. The radius of the floor plate is set to R, and the center region is defined as the region formed by the center of the floor plate being centrifugal and surrounded by a circle of radius r. r≤R/2. With this installation, the distribution of apertures on the sound deadening plate is more concentrated, and the whole silencer has a better sounding effect.

In one embodiment of the present application, the cylinder body is a stainless steel member. The silencer further includes a connection section and a transition section connecting the connection section and the cylinder body. The inner diameter of the connection section is smaller than the inner diameter of the cylinder body. A copper bush is installed to cover the outside of the connection section. The length of the portion where the copper bush is installed to cover the connecting section does not exceed 60% of the total length of the copper bush. By providing connecting sections having relatively small inner diameters at both ends of the cylinder body, connectors having relatively small inner diameters are formed at both ends of the cylinder body. This allows the size of the two connection sections to be matched to the pipe opening size of the internal pipeline (not shown) of the air conditioner, and further facilitates the fixed connection between the muffler and the internal pipeline of the air conditioner. Installing the copper bush on the outside of the connecting section helps to better weld the pipe line inside the silencer and air conditioning unit.

In one embodiment of the present application, a step is installed on the outer wall of one end of the connection section far from the cylinder body, and the copper bush is connected to the step point. The installation of the step helps in determining the position of the copper bush at the connecting section point, and improves the assembly accuracy of the copper bush and the connecting section.

In one embodiment of the present application, a chamfer is installed on one side far from the axis of the connection section of the step. Through this installation, it is possible to prevent a burr from being generated at an edge of one side far from the axis of the connection section of the step during processing of the step.

The present application further provides an air conditioner. The air conditioner includes a silencer according to any one of the above-described embodiments.

In the silencer and air conditioner provided in the present application, the position limiting protrusion is installed on the inner wall of the noise cavity. Position limiting protrusions are installed on both sides of the silencer. Therefore, the position limiting projection exhibits a very good position limiting effect on the muffler, preventing the silencer plate from moving within the silencer cavity. This strengthens the connection between the sound deadening plate and the cylinder body. Therefore, the silencer provided in the present application solves the problem that the connection between the silencer plate and the cylinder body is not strong enough in the prior art.

1 is a cross-sectional view of a silencer according to an embodiment of the present application.
FIG. 2 is a partially enlarged view of point A in FIG. 1 .
3 is a plan view of a silencer according to an embodiment of the present application.
In the accompanying drawing, 1 is a cylinder body, 11 is a noise cavity, 12 is a position limiting protrusion, 121 is a convex shell, 2 is a noise plate, 21 is a through hole, 22 is a bottom plate, 221 is a center region, 23 is a side plate, and 3 is a connection. section, 31 is a step, 32 is a chamfer, 4 is a transition section, and 5 is a copper bush.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following clearly and completely describes the technical solutions of the embodiments of the present application with reference to the accompanying drawings of the embodiments of the present application. The described implementations are only some implementations, not all of the present application. All other embodiments obtained by a person skilled in the art without creative work based on the embodiments of the present application fall within the protection scope of the present application.

Note that when a component is described as being “mounted” on another component, it may be directly mounted on the other component or there may be an intervening component. When a component is described as being “installed” on another component, it may be directly installed on the other component or intervening components may exist simultaneously. When one component is described as being "fixed" to another component, it may be directly fixed to the other component or intervening components may exist simultaneously.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Terms used herein in the specification of the present application are for describing specific embodiments, and are not intended to limit the present application. As used herein, the term “and/or” includes any and all combinations of one or more of the related listed items.

As shown in FIGS. 1 to 3 , the present application provides a silencer mainly used in an air conditioner. Specifically, the silencer includes a cylinder body 1, a connecting section 3, and a transition section 4 connecting the connecting section 3 and the cylinder body 1. A silencer cavity 11 is provided in the cylinder body 1. A silencing plate 2 is installed in the silencing cavity 11 . A position limiting protrusion 12 is installed on the inner wall of the noise cavity 11. The position limiting protrusions 12 abut on both sides of the sound deadening plate 2, and limit the movement of the sound deadening plate 2 within the sound deadening cavity 11. It is installed in the middle of, and the circumferential wall of the sound deadening plate 2 abuts with the inner wall of the sound deadening cavity 11. In addition, a plurality of through holes 21 are provided in the silencer 2 . The through hole 21 passes through the silencer plate 2 . In this way, the silencing plate 2 has a better silencing effect.

In one embodiment, the position limiting protrusion 12 may be formed to protrude along the radial direction of the cylinder body 1 from the side wall of the cylinder body (1). In this way, the processing difficulty of the position limiting protrusion 12 is greatly reduced, and after the silencer 2 is mounted in the silencer cavity 11, the side walls of the cylinder body 1 on both sides of the silencer plate 2 are again cut into the cylinder body. It is possible to form the position limiting protrusion 12 by extrusion processing along the radial direction of (1). That is, the assembly of the silencer is more convenient. Position limiting protrusion 12 may be welded to the inner wall of the silencer. The welding difficulty of the position limiting protrusion 12 is much lower than that of the silencer plate 2, and the welding of the position limiting protrusion 12 and the inner wall of the cylinder body 1 is more robust. Even if the silencer 2 is impacted by the refrigerant, the position limiting protrusion 12 is difficult to move. Regardless of the molding method of the position limiting protrusion 12, the connection between the silencer 2 and the cylinder body 1 can be made more robust. That is, the silencer provided in the present application solves the problem that the connection between the silencer plate 2 and the cylinder body 1 is not sufficiently robust in the prior art.

In addition, the maximum height at which the position limiting protrusion 12 protrudes from the inner wall of the noise cavity 11 is 0.5 mm to 0.8 mm. If the maximum height at which the position limiting protrusion 12 protrudes from the inner wall of the silencer cavity 11 is 0.5 mm or more, the position limiting protrusion 12 helps to exhibit a better sounding effect on the sound deadening plate 2. In addition, if the maximum protruding height of the position limiting protrusion 12 from the inner wall of the noise cavity 11 is 0.8 mm or less, it helps to lower the difficulty of processing the position limiting protrusion 12.

When the position limiting protrusion 12 is formed to protrude along the radial direction of the cylinder body 1 from the side wall of the cylinder body 1, the structure of the position limit protrusion 12 also has other shapes. In the present embodiment, as shown in FIG. 1, all of the position limiting protrusions 12 contacting an arbitrary side of the silencer 2 include a plurality of convex shells 121 spaced apart from each other. The convex hull 121 is uniformly distributed along the circumferential direction of the noise cavity 11 . In this way, when mounting the sound deadening plate 2 to the sound deadening cavity 11, simply by extruding the convex shell 121 uniformly distributed at a position corresponding to the outside of the cylinder body 1 to be spaced apart, the sound deadening plate (2) can be clamped to a fixed position in the noise cavity (11). The processing difficulty of the convex shell 121 is relatively low, and the processing degree of the cylinder body 1 is not high, so that the cylinder body 1 is prevented from breaking due to relatively large deformation. However, it is not limited thereto. An annular concave groove may be machined in the circumferential direction of the outer wall of the cylinder body 1 so that the inner wall of the cylinder body 1 protrudes toward the axis of the cylinder body 1 to form an annular position limiting projection 12. The annular position limiting protrusion 12 can be molded by processing through a method of rotational shrinkage processing, which has relatively high processing accuracy.

In one embodiment, as shown in FIGS. 1 and 3, the noise plate 2 includes a circular bottom plate 22 and a side plate 23 installed to surround the circumference of the bottom plate 22. . The outer circumferential wall of the side plate 23 is tightly fitted with the inner wall of the noise cavities 11 . Through this installation, the contact area between the sound absorbing plate 2 and the inner wall of the sound emitting cavity 11 is enlarged, and the connection between the sound absorbing plate 2 and the inner wall of the sound emitting cavity 11 is made more robust. In addition, due to the existence of the side plate 23, the silencer plate 2 is not easily tilted during the installation process, and the assembly accuracy of the entire silencer is improved.

Also, as shown in FIG. 3 , the through holes 21 are concentratedly distributed in the central region 221 of the bottom plate 22 . The radius of the bottom plate 22 is set to R, and the center region 221 is defined as a region formed by the center of the bottom plate 22 being centrifugal and surrounded by a circle having a radius of r. r≤R/2. Through this installation, the distribution of the through holes 21 on the sound deadening plate 2 is more concentrated, and the entire silencer has a better noise effect.

In one embodiment, as shown in FIG. 1 , the inner diameter of the connecting section 3 is smaller than the inner diameter of the cylinder body 1 . Specifically, the inner diameter of the transition section 4 gradually decreases from one end connecting the cylinder body 1 to the other end connecting the connecting section 3. This makes the internal space of the silencer located at both ends in the axial direction gradually smaller. Accordingly, it is possible to effectively prevent the silencer plate 2 fixed in the cylinder body 1 from falling off from both ends of the cylinder body 1. Next, the transition section 4 can smoothly connect the connecting sections 3 having different inner diameters with the cylinder body 1 . By providing connecting sections 3 having a relatively small inner diameter at both ends of the cylinder body 1, connectors having a relatively small inner diameter are formed at both ends of the cylinder body 1. This allows the sizes of the two connecting sections 3 to all match the pipe opening sizes of the internal pipelines (not shown) of the air conditioner, and further facilitates the fixed connection of the silencer and the internal pipeline of the air conditioner. Typically, in order to lower the manufacturing cost of the silencer, the cylinder body 1 is made of stainless steel. However, the internal pipelines of air conditioners are usually made of copper. Therefore, in order to better weld the silencer and the internal pipeline of the air conditioner, a copper bush 5 may be installed to cover the outside of the connection section 3. Also, the length of the copper bush 5 covering the connection section 3 does not exceed 60% of the total length of the copper bush 5.

In addition, as shown in FIG. 2, a step 31 is installed on the outer wall of one end of the connecting section 3 far from the cylinder body 1. The copper bush 5 is connected to the step 31 point. When the step difference 31 is installed, it helps to determine the location of the copper bush at the point of the connection section 3, and the assembly accuracy of the copper bush and the connection section is improved.

In addition, as shown in FIG. 2, a chamfer 32 is installed on one side far from the axis of the connection section 3 of the step 31. Through this installation, in the process of processing the step 31, it is possible to prevent burrs from being generated on the edge of one side far from the axis of the connection section 3 of the step 31.

The cylinder body 1, the transition section 4 and the connecting section 3 are integrally molded structures. Specifically, when the silencer is processed, rotational shrinkage processing is first performed on one end of the cylinder body 1 in the axial direction. After processing the transition section 4 and the connection section 3 at the corresponding ends, the silencer 2 is mounted in the silencer cavity 11 from one end of the cylinder body 1 that has not been subjected to rotational shrinkage. In addition, the silencer 2 and the inner wall of the cylinder body 1 are fixedly connected. Finally, rotational shrinkage processing is performed on the end portion of the cylinder body 1 that has not been subjected to rotational shrinkage processing. After one end of the cylinder body 1 is subjected to rotational shrinkage processing, a silencer plate 2 is inserted. In the case of adopting the soldering type, after soldering, the other end of the cylinder body 1 is subjected to rotational shrinkage again. Since there is drawing oil or saponification liquid in the spin shrinking process, cleaning is required after completion of the spin shrink. If the solder is contaminated with oil due to not thoroughly cleaned, the welding quality of the silencer 2 may be affected. In addition, when laser welding or argon arc welding is adopted, although there is no solder, the cylinder body 1 is relatively deep, so it is inconvenient to insert the welded joint into the cylinder body 1 deeply. The present application can solve the problem of contamination and convenience existing in the existing welding method by adopting the position limiting protrusion 12.

The present application further provides an air conditioner. The air conditioner includes a silencer according to any one of the above-described embodiments. The silencer is fixedly connected to the internal pipeline of the air conditioner through the two connecting sections 3 at both ends of the cylinder body 1.

Each technical feature of the above embodiment may be arbitrarily combined. For concise description, all possible combinations of each technical feature in the above-described embodiment have not been described, but as long as there is no contradiction in the combination of these technical features, they should all be considered within the scope described in the present invention.

Those skilled in the art to which the present invention pertains understand that the above embodiments are for illustrative purposes only and do not limit the present application. All appropriate changes and modifications to the above embodiments within the scope of the spirit of the present application shall fall within the protection scope of the present application.

Claims (10)

In the silencer,
It includes a cylinder body, and a noise cavity is installed in the cylinder body,
A silencer is installed in the noise cavity, and a position limiting protrusion is installed on an inner wall of the noise cavity.
The silencer, characterized in that the position limiting protrusion abuts on both sides of the silencer plate to limit the movement of the silencer plate in the silencer cavity. According to claim 1,
The silencer, characterized in that the position limiting projection is formed to protrude along the radial direction of the cylinder body from the side wall of the cylinder body. According to claim 2,
The silencer, characterized in that the maximum height protruding from the inner wall of the silencer cavity is 0.5mm to 0.8mm. According to claim 2,
The silencer, characterized in that all of the position limiting projections contacting one side of the sound deadening plate include a plurality of convex shells spaced apart from each other, and the convex shells are uniformly distributed along the circumferential direction of the sound deadening cavity. According to claim 1,
The sound deadening plate is installed in the middle of the cylinder body, the circumferential wall of the sound deadening plate is in contact with the inner wall of the sound deadening cavity, and a plurality of through holes are provided in the sound deadening plate, and the through holes pass through the sound deadening plate. Silencer characterized in that. According to claim 5,
The noise plate includes a circular bottom plate and side plates installed to surround the circumference of the bottom plate, and an outer circumferential wall of the side plate is tightly fitted with an inner wall of the noise canceling cavity.
The through holes are intensively distributed in a central region of the floor plate, the radius of the floor plate is set to R, and the center region is defined as a region formed by a centrifugal center of the floor plate and surrounded by a circle having a radius r, , silencer characterized in that r≤R / 2. According to claim 1,
The cylinder body is a stainless steel member,
The silencer further includes a connection section installed at both ends of the cylinder body, and a transition section connecting the connection section and the cylinder body,
The inner diameter of the connection section is smaller than the inner diameter of the cylinder body,
A copper bush is installed to cover the outside of the connection section, and a length of a portion where the copper bush is installed to cover the connection section does not exceed 60% of the total length of the copper bush. Silencer. According to claim 7,
A silencer, characterized in that a step is installed on an outer wall of one end of the connection section far from the cylinder body, and the copper bush is connected to the step point. According to claim 8,
A silencer, characterized in that a chamfer is installed on one side of the step far from the axis of the connection section. An air conditioner comprising the silencer according to any one of claims 1 to 9.

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