A sound attenuation box and compressor

Abstract

The utility model provides a sound attenuation box, including box body, sound attenuation pipe and connecting pipe, be equipped with air inlet and air outlet on the box body, the sound attenuation pipe is located in the box body and is filled with sound absorption sponge between the sound attenuation pipe and the box body inner wall, the connecting pipe has elasticity, is used for connecting the air inlet with the sound attenuation pipe and the air outlet with the sound attenuation pipe, the utility model discloses a compressor still, when the gas enters the sound attenuation pipe, the partial kinetic energy of gas can convert into the kinetic energy of sound attenuation pipe, makes the sound attenuation pipe move in the box body, the sound absorption sponge can buffer the sound attenuation pipe, absorbs kinetic energy, on the other hand, the sound absorption sponge can absorb the sound when the airflow passes through the pipeline, under this multiple effect, reduce the kinetic energy of gas in the sound attenuation box, thereby reach the effect of sound absorption and sound attenuation.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction technology, and in particular to a noise reduction box and a compressor. Background Technology

[0002] While household refrigerators bring us convenience, they also bring us troubles. The impact of refrigerator unit noise on the environment and the room where it is used has become a concern. As the heart of the refrigerator, the compressor is the main source of noise, which originates from the friction and impact between moving parts, or from the eddies generated during gas flow.

[0003] Existing silencers can be found in patent application number CN200810151963.6, which introduces the fluid discharged from the compressor into the cavity of the silencer, and the silencing structure in the silencer reduces the noise generated by the compressor.

[0004] The above technical solution has the following problems: the air pressure of the airflow output by the compressor is fluctuating, and the fluctuating airflow inside the muffler will randomly hit the inner wall of the muffler, making the muffler's noise reduction effect less than ideal. Utility Model Content

[0005] In view of this, it is necessary to provide a silencer box and a compressor that can reduce the noise caused by the collision between the airflow and the inner wall of the silencer.

[0006] This utility model provides a silencer box, including: a door bolt, The box body has an air inlet and an air outlet on the top. A silencer tube, movably disposed within the housing, with sound-absorbing sponge filling the space between the silencer tube and the inner wall of the housing; and A connecting pipe, which is elastic, is connected between the air inlet and the muffler pipe, and between the air outlet and the muffler pipe.

[0007] In other embodiments, the silencer pipe includes a plurality of straight pipes and a plurality of bent pipes, the straight pipes and the bent pipes being alternately arranged and connected in sequence.

[0008] In other embodiments, a slag wool sound-absorbing layer is attached to the inner wall of the straight pipe.

[0009] In other embodiments, a plurality of perforated plates are provided at intervals in the straight pipe, and the perforated plates are inclined relative to the axis of the straight pipe.

[0010] In other embodiments, the bend is bent and has elasticity.

[0011] In other embodiments, the housing is provided with an air inlet connecting pipe at the air inlet and an air outlet connecting pipe at the air outlet, and the air inlet connecting pipe and the air outlet connecting pipe are used to connect to an external pipe.

[0012] In other embodiments, the inner diameter of the air inlet connecting pipe gradually increases in the direction close to the air inlet.

[0013] In other embodiments, the inner diameter of the outlet connecting pipe gradually increases in the direction away from the outlet.

[0014] In other embodiments, the inner surface of the box is coated with adhesive, and the sound-absorbing sponge is fixed to the inner surface of the box by the adhesive.

[0015] This utility model also provides a compressor, including a compressor body and the sound-absorbing box described in any of the above claims, wherein the sound-absorbing box is connected to the air inlet end or air outlet end of the compressor body.

[0016] The beneficial effects of this utility model are as follows: In this invention, a housing, a silencer pipe, and a connecting pipe are provided. The housing has an air inlet and an air outlet. The silencer pipe is movably disposed within the housing, and sound-absorbing sponge is filled between the silencer pipe and the inner wall of the housing. The connecting pipe is elastic and is used to connect the air inlet to the silencer pipe and the air outlet to the silencer pipe. When gas enters the silencer pipe, part of the gas's kinetic energy can be converted into the silencer pipe's kinetic energy, causing the silencer pipe to move within the housing. The sound-absorbing sponge can buffer the silencer pipe and absorb kinetic energy. On the other hand, the sound-absorbing sponge can absorb the sound of airflow passing through the pipe. Under these multiple effects, the kinetic energy of the gas inside the silencer housing is reduced, thereby achieving the effect of sound absorption and silencing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the silencer box in this utility model; Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the straight pipe; Wherein: 1-box body, 11-air inlet, 12-air outlet, 13-air inlet connecting pipe, 14-air outlet connecting pipe; 2-Silencer pipe, 21-Straight pipe, 211-Slag wool sound-absorbing layer, 212-Perforated plate, 22-Bend pipe; 3-Connecting pipe; 4-Sound-absorbing sponge. Detailed Implementation

[0019] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0020] like Figure 1-2 As shown, an embodiment of this utility model provides a silencer box, which includes: a box body 1, a silencer pipe 2, and a connecting pipe 3. The box body 1 is provided with an air inlet 11 and an air outlet 12. The silencer pipe 2 is movably disposed inside the box body 1, and the space between the silencer pipe 2 and the inner wall of the box body 1 is filled with sound-absorbing sponge 4. The connecting pipe 3 is elastic and is used to connect the air inlet 11 to the silencer pipe 2 and the air outlet 12 to the silencer pipe 2.

[0021] This invention includes a housing 1, a silencer pipe 2, and a connecting pipe 3. The silencer pipe 2 is movably disposed within the housing 1, and sound-absorbing sponge 4 is filled between the silencer pipe 2 and the inner wall of the housing 1. The silencer pipe 2 is connected to the air inlet 11 and the air outlet 12 via flexible pipes. When gas enters the silencer pipe 2, part of the gas's kinetic energy can be converted into the kinetic energy of the silencer pipe 2, causing the silencer pipe 2 to move within the housing 1. The sound-absorbing sponge 4 can buffer the silencer pipe 2 and absorb kinetic energy. On the other hand, the sound-absorbing sponge 4 can absorb the sound of airflow passing through the pipe. Under these multiple effects, the kinetic energy of the gas inside the silencer box is reduced, thereby achieving the effect of sound absorption and silencing.

[0022] Specifically, the box body 1 is provided with an air inlet connecting pipe 13 at the air inlet 11 and an air outlet connecting pipe 14 at the air outlet 12. The air inlet connecting pipe 13 and the air outlet connecting pipe 14 are connected to external pipes.

[0023] Furthermore, the inner diameter of the air inlet connecting pipe 13 gradually increases along the direction close to the air inlet 11. The purpose of this design is that as the inner diameter of the air inlet connecting pipe 13 gradually increases, the airflow speed gradually decreases when the airflow flows through the air inlet connecting pipe 13, thereby reducing the kinetic energy of the airflow and achieving the function of reducing subsequent noise.

[0024] Furthermore, the inner diameter of the air outlet connecting pipe 14 gradually increases in the direction away from the air outlet 12. The purpose of this design is that as the inner diameter of the air outlet connecting pipe 14 gradually increases, the airflow speed gradually decreases when the airflow flows through the air outlet connecting pipe 14, thereby reducing the kinetic energy of the airflow and achieving the function of reducing subsequent noise.

[0025] Furthermore, the inner surface of the box body 1 is coated with adhesive, and the sound-absorbing sponge 4 is fixed to the inner surface of the box body 1 by the adhesive.

[0026] Furthermore, the silencer 2 includes several straight pipes 21 and several bent pipes 22, which are alternately arranged and connected in sequence to form a meandering silencer 2. The purpose of this design is to extend the length of the silencer 2, increase the airflow path, prolong the airflow time within the silencer 2, increase the sound energy consumption of the airflow within the silencer 2, and thus reduce noise.

[0027] Furthermore, a slag wool sound-absorbing layer 211 is attached to the inner wall of the straight pipe 21. Slag wool is an inorganic fiber material made from blast furnace slag as the main raw material, with the addition of a certain amount of limestone, dolomite and other auxiliary materials, and is processed through melting and fiberization. As a porous material, slag wool can effectively absorb sound wave energy and reduce noise transmission, making it suitable for various sound absorption and noise reduction applications.

[0028] Furthermore, the straight pipe 21 is provided with a plurality of perforated plates 212 at intervals. The perforated plates 212 are inclined relative to the axis of the straight pipe 21, and the inclination direction of each perforated plate 212 is different. The purpose of this design is to guide the airflow to contact the slag wool sound-absorbing layer 211 on the inner wall of the straight pipe 21, increase the consumption of sound energy, and thus reduce noise.

[0029] Furthermore, the bend 22 is curved and elastic. When airflow passes through the bend 22, the bend 22 can undergo a certain deformation, thereby consuming sound energy and reducing noise.

[0030] Furthermore, the connecting pipe 3 is elastic. The purpose of this design is twofold: firstly, when airflow passes through the connecting pipe 3, the connecting pipe 3 can undergo a certain deformation, thereby consuming sound energy and reducing noise; secondly, it allows the silencer pipe 2 to form a movable connection with the box body 1, creating a space for relative movement between the silencer pipe 2 and the box body 1, thus achieving the purpose of energy conversion and noise reduction.

[0031] The present invention also includes a compressor, which includes a compressor body and the aforementioned sound-absorbing box, wherein the sound-absorbing box is connected to the air inlet or air outlet of the compressor body.

[0032] The beneficial effects of this utility model are: In this invention, a housing, a silencer pipe, and a connecting pipe are provided. The housing has an air inlet and an air outlet. The silencer pipe is movably disposed within the housing, and sound-absorbing sponge is filled between the silencer pipe and the inner wall of the housing. The connecting pipe is elastic and is used to connect the air inlet to the silencer pipe and the air outlet to the silencer pipe. When gas enters the silencer pipe, part of the gas's kinetic energy can be converted into the silencer pipe's kinetic energy, causing the silencer pipe to move within the housing. The sound-absorbing sponge can buffer the silencer pipe and absorb kinetic energy. On the other hand, the sound-absorbing sponge can absorb the sound of airflow passing through the pipe. Under these multiple effects, the kinetic energy of the gas inside the silencer housing is reduced, thereby achieving the effect of sound absorption and silencing.

[0033] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model.

Claims

1. A sound-absorbing box, characterized in that, include: The box body has an air inlet and an air outlet on the top. A silencer tube is movably disposed inside the box, and sound-absorbing sponge is filled between the silencer tube and the inner wall of the box. as well as A connecting pipe, which is elastic, is connected between the air inlet and the muffler pipe, and between the air outlet and the muffler pipe.

2. The silencer box as described in claim 1, characterized in that, The silencer pipe includes several straight pipes and several bent pipes, with the straight pipes and bent pipes alternately arranged and connected in sequence.

3. The silencer box as described in claim 2, characterized in that, The inner wall of the straight pipe is lined with a slag wool sound-absorbing layer.

4. The silencer box as described in claim 3, characterized in that, The straight pipe is provided with a number of perforated plates at intervals, and the perforated plates are inclined relative to the axis of the straight pipe.

5. The silencer box as described in claim 2, characterized in that, The bend is bent and has elasticity.

6. The silencer box as described in claim 1, characterized in that, The box body is provided with an air inlet connecting pipe at the air inlet and an air outlet connecting pipe at the air outlet. The air inlet connecting pipe and the air outlet connecting pipe are used to connect to external pipes.

7. The silencer box as described in claim 6, characterized in that, The inner diameter of the air inlet connecting pipe gradually increases along the direction close to the air inlet.

8. The silencer box as described in claim 6, characterized in that, The inner diameter of the air outlet connecting pipe gradually increases in the direction away from the air outlet.

9. The silencer box as described in claim 1, characterized in that, The inner surface of the box is coated with adhesive, and the sound-absorbing sponge is fixed to the inner surface of the box by the adhesive.

10. A compressor, characterized in that, It includes a compressor body and a silencer box as described in any one of claims 1-9, wherein the silencer box is connected to the air inlet or air outlet of the compressor body.

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