CN211823081U

CN211823081U - Silencer and air conditioner

Info

Publication number: CN211823081U
Application number: CN201922388518.8U
Authority: CN
Inventors: 王文杰; 单宇宽; 金烨
Original assignee: ZHUHAI HUAYU METAL CO LTD
Current assignee: ZHUHAI HUAYU METAL CO LTD
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-10-30
Anticipated expiration: 2029-12-26
Also published as: JP7345660B2; WO2021129313A1; JP2023507921A

Abstract

The utility model relates to an air conditioner and muffler thereof. The silencer comprises a silencing pipe and two connecting sleeves. The hush pipe includes first pipe and communicates two second pipes at first pipe both ends respectively. The pipe diameter of the second pipe is smaller than that of the first pipe. The outer wall of the second pipe far away from one end of the first pipe is provided with a step. The step is provided along the circumferential direction of the second pipe. The outer diameter of the step is smaller than the outer diameter of the second tube. The connecting sleeve is arranged at one end of the second pipe, which is far away from the first pipe. The connecting sleeve comprises a first end and a second end which are opposite. The first end is sleeved and fixed on the step. The second end has an inner diameter less than the inner diameter of the second tube. Under the condition that the inner diameter of the second end of the connecting sleeve is not changed, the arrangement of the step can reduce the necking quantity of the second pipe relative to the first pipe and/or the flaring quantity of the first end of the connecting sleeve relative to the second end, the probability of the side wall cracking and the like during the processing of the silencing pipe and/or the connecting sleeve is reduced, and the product percent of pass of the silencer processing is improved.

Description

Silencer and air conditioner

Technical Field

The utility model relates to an air conditioning equipment makes technical field, especially relates to a muffler and air conditioner.

Background

A muffler, which is a kind of pipe noise reduction device, is generally installed in a refrigeration apparatus such as an air conditioner to perform the functions of buffering and attenuating noise. The silencer includes a silencing pipe with a large middle and two small ends, and openings at two ends of the silencing pipe are communicated with a connecting pipe for communicating other parts by a connecting sleeve. In order to improve the silencing effect, the openings at both ends of the silencing pipe usually have a larger amount of necking (the amount of necking is obtained by subtracting a small pipe diameter from a large pipe diameter and then dividing by the large pipe diameter, which is a description of the amount of reducing the silencing pipe). However, if the amount of the necking is too large, the two ends of the silencing pipe are more prone to cracking and the like in the production process, and the qualification rate in the production of the silencer is greatly influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a silencer and an air conditioner with high product yield during processing, aiming at the problem that the product yield of the traditional silencer processing is low.

A muffler, comprising:

the silencing pipe comprises a first pipe and two second pipes which are respectively communicated with two ends of the first pipe, the pipe diameter of each second pipe is smaller than that of the first pipe, a step is formed on the outer wall of one end, far away from the first pipe, of each second pipe, the step is arranged along the circumferential direction of each second pipe, and the outer diameter of each step is smaller than that of each second pipe; and

the connecting sleeve is arranged at one end of the second pipe far away from the first pipe and comprises a first end and a second end which are opposite, the first end is sleeved and fixed on the step, and the inner diameter of the second end is smaller than that of the second pipe.

In one embodiment, the step is formed with a transition chamfer at an edge thereof adjacent to one end of the first tube.

In one embodiment, the connecting sleeve includes a first sleeve, a transition sleeve and a second sleeve, two ends of the transition sleeve are respectively communicated with the first sleeve and the second sleeve, one end of the first sleeve far away from the transition sleeve is the first end, one end of the second sleeve far away from the transition sleeve is the second end, and the inner diameter of the transition sleeve is gradually reduced along the direction from the first end to the second end.

In one embodiment, the first sleeve, the transition sleeve and the second sleeve are of an integrally formed structure.

In one embodiment, the connecting sleeve is a copper sleeve.

In one embodiment, the inner wall of the second end is convexly provided with a limit bump.

In one embodiment, the side wall of the second end is recessed inwards to form the limit bump.

In one embodiment, a welding joint is formed between the inner wall of the first end and the axial end face of the second pipe, so that the first end is fixedly connected with the second pipe; the weld joint is disposed along an axial direction of the second pipe.

In one embodiment, the solder joint is a copper-tin solder joint.

An air conditioner, comprising:

a muffler; and

and the two connecting pipes are respectively arranged in the two second ends in a penetrating way.

Above-mentioned muffler and air conditioner, when actual installation used, the connecting sleeve was arranged in the connecting pipe of intercommunication hush pipe and air conditioner, and in order to guarantee the noise cancelling effect, the pipe diameter of connecting pipe all was less than the pipe diameter of hush pipe usually. Because the external diameter of step is less than the external diameter of second pipe, so under the unchangeable circumstances of the second end internal diameter of adapter sleeve, the setting of step has reduced the throat volume of second pipe for first pipe and/or the flaring volume of the first end of adapter sleeve for the second end effectively, greatly reduced the hush pipe and/or adapter sleeve and add the probability of the condition such as the lateral wall fracture that takes place during processing, improved the product percent of pass of muffler processing effectively.

Drawings

FIG. 1 is a schematic view of a muffler according to a preferred embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of the muffler of FIG. 1;

FIG. 3 is a schematic view of the muffler pipe of the muffler of FIG. 1;

FIG. 4 is an enlarged view of a portion of the silencer duct shown in FIG. 3;

FIG. 5 is a schematic structural view of a connecting sleeve in the silencer shown in FIG. 1;

FIG. 6 is a schematic view of the muffler of FIG. 1 prior to welding;

fig. 7 is an enlarged view of a portion of the muffler shown in fig. 6.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention 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.

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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present, unless otherwise specified. It will also be understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements, or one or more intervening elements may also be present.

Where the terms "comprising," "having," and "including" are used herein, another element may be added unless an explicit limitation is used, such as "only," "consisting of … …," etc. Unless mentioned to the contrary, terms in the singular may include the plural and are not to be construed as being one in number.

Furthermore, the drawings are not 1: 1, and the relative dimensions of the various elements in the figures are drawn for illustration only and not necessarily to true scale.

Referring to fig. 1 and 2, the present invention provides an air conditioner (not shown) and a silencer 100 thereof. The air conditioner includes a silencer 100 and two connection pipes (not shown). The two connection pipes are respectively communicated with both ends of the muffler 100. The end of the connection pipe remote from the muffler 100 communicates with other components of the air conditioner.

The silencer 100 is not limited to use in an air conditioner, but may be used in other refrigeration equipment such as an ice chest and a refrigerator, and may be applied to power equipment such as an air compressor, a generator, and a boiler exhaust port. The present invention will be described by taking an example in which the silencer 100 is applied to an air conditioner.

The muffler 100 of the preferred embodiment of the present invention includes a muffler pipe 110 and two connecting sleeves 120.

Referring to fig. 3, the silencing tube 110 includes a first tube 111 and two second tubes 112 respectively connected to two ends of the first tube 111. The pipe diameter of the second pipe 112 is smaller than that of the first pipe 111. Wherein the pipe diameter is an average value between the pipe outer diameter and the pipe inner diameter. The first tube 111 and the second tube 112 may be integrally formed, or may be a spliced structure fixedly connected to each other by welding or the like.

Referring to fig. 4, a step 1121 is formed on the outer wall of the second tube 112 at an end away from the first tube 111 along the circumferential direction of the second tube 112. Step 1121 has an outer diameter smaller than that of second tube 112. Specifically, the outer wall of the second tube 112 at the end away from the first tube 111 is machined by machining (e.g., milling, turning, etc.) to form the step 1121.

In the present embodiment, the step 1121 is formed with a transition chamfer 1122 at an edge thereof near one end of the first tube 111. Specifically, the angle between the extension direction of the transition chamfer 1122 and the diameter direction of the second tube 112 is less than 45 degrees. The provision of the transition chamfer 1122 can reduce the generation of burrs during the processing of the step 1121, so as to facilitate the assembly of the subsequent muffler 100 and improve the processing quality of the muffler 100.

In the present embodiment, the first tube 111 and the second tube 112 are integrally formed. Thus, the silencer duct 110 is formed integrally. The first pipe 111 and the second pipe 112 are integrally formed, so that the first pipe 111 and the second pipe 112 are connected more firmly, and the silencing pipe 110 is easier to process.

In the present embodiment, the silencer duct 110 is a stainless steel duct. Since stainless steel has high strength and excellent corrosion resistance, the silencer duct 110 also has high strength and excellent corrosion resistance. The silencer 100 has high strength, so that the silencing pipe 110 is not easy to crack or break even if the silencer 100 works in a vibrating environment for a long time; the pipe 110 has excellent corrosion resistance, so that the pipe has a low probability of rusting even if it is in contact with air or other gases with water vapor or corrosiveness for a long time. Therefore, the muffler pipe 110 is provided as a stainless steel pipe, which greatly prolongs the service life of the muffler 100.

Referring to fig. 5, the connection sleeve 120 is disposed at an end of the second tube 112 away from the first tube 111. Thus, two connecting sleeves 120 are respectively arranged on the two second pipes 112. The connecting sleeve 120 includes a first end 121 and a second end 122 opposite to each other. The first end 121 is disposed on and fixed to the step 1121. The connecting sleeve 120 is a reducing sleeve. The first end 121 is fixedly connected to the second tube 112 by welding, bonding, or the like. The second end 122 has an inner diameter that is less than the inner diameter of the second tube 112. Therefore, the inner diameter of the second end 122 is smaller than that of the first end 121, so the connecting sleeve 120 is a reducing sleeve.

In the air conditioner, the connection pipe is inserted into the second end 122. The connection sleeve 120 is used to connect the muffler 100 with other components in the air conditioner. The inner diameter of the second end 122 of the connecting sleeve 120 is smaller than the inner diameter of the second pipe 112 of the muffler pipe 110, so that the connecting sleeve 120 can further reduce the diameters of the second pipes 112 at the two ends of the muffler pipe 110, and the muffler 100 has a better effect.

In this embodiment, the copper sleeve of the connection sleeve 120. Because copper has characteristics such as ductility is good, matter is soft, so set up adapter sleeve 120 into the copper sheathing for not only the processing of adapter sleeve 120 is comparatively simple, but also makes the connecting pipe in the air conditioner install more simply on adapter sleeve 120.

Because the outer diameter of the step 1121 is smaller than the outer diameter of the second pipe 112, the step 1121 effectively reduces the amount of necking of the second pipe 112 relative to the first pipe 111 and/or the amount of flaring of the first end 121 of the connecting sleeve 120 relative to the second end 122 under the condition that the inner diameter of the second end 122 of the connecting sleeve 120 is not changed, greatly reduces the probability of side wall cracking and the like during the processing of the muffling pipe 110 and/or the connecting sleeve 120, and effectively improves the product yield of the processing of the muffler 100. Wherein, the necking amount is (the pipe diameter of the first pipe 111-the pipe diameter of the second pipe 112)/the pipe diameter of the first pipe 111; the amount of flare (inner diameter of the first end 121-inner diameter of the second end 122)/inner diameter of the second end 122.

Referring to fig. 5 again, in the present embodiment, the connecting sleeve 120 includes a first sleeve 123, a transition sleeve 124 and a second sleeve 125. The transition sleeve 124 communicates at both ends with the first sleeve 123 and the second sleeve 125, respectively. Specifically, the first sleeve 123, the transition sleeve 124, and the second sleeve 125 are coaxially disposed. The end of the first sleeve 123 distal to the transition sleeve 124 is a first end 121 and the end of the second sleeve 125 distal to the transition sleeve 124 is a second end 122. Thus, the first sleeve 123 is fitted over and fixed to the step 1121. The internal stiffness of the transition sleeve 124 decreases gradually in a direction from the first end 121 toward the second end 122. Thus, the transition sleeve 124 is a tapered barrel. Therefore, the arrangement of the transition sleeve can reduce the probability of collision of the airflow flowing through the connecting sleeve 120 in the connecting sleeve 120, and can further improve the silencing effect of the silencer 100.

Further, in the present embodiment, the first sleeve 123, the transition sleeve 124 and the second sleeve 125 are integrally formed. The first sleeve 123, the transition sleeve 124 and the second sleeve 125 are integrally formed, so that the connection between the first sleeve 123 and the transition sleeve 124 and the connection between the transition sleeve 124 and the second sleeve 125 are firmer, and the connection sleeve 120 is more simply and conveniently processed.

In this embodiment, the inner wall of the second end 122 is protruded with a limit bump 1221. The setting of spacing bump 1221 can play limiting displacement to the connecting pipe of wearing to locate in second end 122, so the installation accuracy when spacing bump 1221's setting can improve connecting pipe and muffler 100 installation. Moreover, the arrangement of the limit protruding points 1221 can also reduce the probability of the connecting pipe being damaged due to the fact that the connecting pipe is inserted too deeply into the connecting sleeve 120 and collides with the second pipe 112 of the silencer 100, so as to ensure the smooth installation of the silencer 100 and other parts.

When the connection sleeve 120 includes the first sleeve 123, the transition sleeve 124 and the second sleeve 125, the limit protrusions 1221 are protruded from the inner wall of the second sleeve 125.

Further, in this embodiment, the sidewall of the second end 122 is recessed inward to form a limit bump 1221. In the processing process of the connecting sleeve 120, the side wall of the second end 122 only needs to be punched by a punching device, and the processing of the limit salient point 1221 can be realized. Therefore, the positioning of the limit protrusions 1221 such that the sidewalls of the second end 122 are formed to be inwardly recessed greatly simplifies the processing of the limit protrusions 1221. Further, when the sidewalls of the second end 122 are recessed inwardly, the outer surface of the second end 122 correspondingly forms a groove.

Further, in this embodiment, the plurality of limiting protruding points 1221 are provided, and the plurality of limiting protruding points 1221 are arranged at intervals along the circumferential direction of the connecting sleeve 120. Thus, the plurality of limit protrusions 1221 can improve the limit effect on the connection pipe, and further reduce the probability of collision between the connection pipe and the second pipe 112 of the silencer pipe 110.

Referring to fig. 1 and 2 again, in the present embodiment, a welding joint 130 is formed between an inner wall of the first end 121 and an axial end surface of the second tube 112, so that the first end 121 and the second tube 112 are fixedly connected. The weld joint 130 is disposed along the circumference of the second pipe 112. The welding joint 130 is a connection joint formed by cooling and solidifying the molten solder, and is used for welding the connection sleeve 120 and the silencer duct 110. Since the weld joint 130 is provided along the circumferential direction of the second pipe 112, sealability between the second pipe 112 and the nipple 120 can be improved. Therefore, the welding joint 130 not only makes the connection between the connection sleeve 120 and the muffler pipe 110 firmer, but also improves the sealing performance of the muffler 100.

Referring again to fig. 6 and 7, specifically, before soldering, the solder forming the solder joint 130 is a solder ring 140. The weld ring 140 is received in the second end 122 and abuts between an inner wall of the second end 122 and an end of the second tube 112 distal from the first tube 111. The weld ring 140 is a welding material having a low melting temperature. When the connection sleeve 120 and the silencing tube 110 need to be welded, the connection sleeve 120 containing the welding ring 140 is only required to be sleeved on the step 1121 of the second tube 112, and is placed in the brazing equipment together for heating and then cooling, so that the connection between the connection sleeve 120 and the silencing tube 110 can be completed. Therefore, the welding ring 140 is provided, so that the welding between the connection sleeve 120 and the sound-deadening tube 110 is more convenient, and the welding reliability between the connection sleeve 120 and the sound-deadening tube 110 is higher. The material of the solder ring 140 is generally copper-tin alloy, silver-copper alloy, tin-lead alloy, etc.

Further, in the present embodiment, since the copper-tin alloy has the characteristics of low melting point, high strength, and the like, the solder joints 130 have the advantages of low melting point, high strength, and the like. Therefore, the welding joint 130 is configured as a copper-tin welding joint, so that the welding strength between the connection sleeve 120 and the sound-deadening tube 110 is high, and the connection between the connection sleeve 120 and the sound-deadening tube 110 is firmer.

In the air conditioner and the silencer 100 thereof, when the air conditioner is installed in practical use, the connecting sleeve 120 is used for communicating the silencing pipe 110 with a connecting pipe in the air conditioner, and the pipe diameter of the connecting pipe is usually smaller in order to ensure the silencing effect. Since the outer diameter of the step 1121 is smaller than the outer diameter of the second pipe 112, the step 1121 effectively reduces the amount of necking of the second pipe 112 relative to the first pipe 111 and/or the amount of flaring of the first end 121 of the connecting sleeve 120 relative to the second end 122 under the condition that the inner diameter of the second end 122 of the connecting sleeve 120 is not changed, greatly reduces the probability of side wall cracking and the like during processing of the muffling pipe 110 and/or the connecting sleeve 120, and effectively improves the product yield of processing of the muffler 100.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A muffler, comprising:

2. The muffler of claim 1, wherein an edge of the step proximate the first pipe end is formed with a transition chamfer.

3. The muffler according to claim 1, wherein the connection sleeve includes a first sleeve, a transition sleeve and a second sleeve, and two ends of the transition sleeve are respectively communicated with the first sleeve and the second sleeve, one end of the first sleeve away from the transition sleeve is the first end, one end of the second sleeve away from the transition sleeve is the second end, and an inner diameter of the transition sleeve is gradually reduced along a direction from the first end to the second end.

4. The muffler of claim 3 wherein the first sleeve, the transition sleeve, and the second sleeve are of unitary construction.

5. The muffler of claim 1, wherein the connecting sleeve is a copper sleeve.

6. The muffler of claim 1, wherein the inner wall of the second end is convexly provided with a limit bump.

7. The muffler of claim 6, wherein the sidewall of the second end is recessed inwardly to form the limit bump.

8. The muffler of claim 1, wherein a weld joint is formed between an inner wall of the first end and an axial end surface of the second pipe to fixedly connect the first end to the second pipe; the weld joint is disposed along an axial direction of the second pipe.

9. The muffler of claim 8, wherein the solder joint is a copper-tin solder joint.

10. An air conditioner, comprising:

the muffler of any one of claims 1 to 9; and