A bend muffler and compressor

Abstract

The utility model provides a kind of elbow muffler and compressor, be equipped with plane elbow and three-dimensional elbow, the plane elbow is bent and set and pipeline extends along the same plane, with first air inlet end and first air outlet end, the three-dimensional elbow is bent and set and pipeline extends along different plane, with second air inlet end and second air outlet end, the second air inlet end and the first air outlet end butt joint.In the utility model, including plane elbow and three-dimensional elbow, the plane elbow is bent and extends along the same plane, the three-dimensional elbow extends along different plane, as much as possible to form more bending part in three-dimensional space, when airflow passes, flow direction is changed multiple times, to increase the flow resistance of gas, increase the energy attenuation of sound wave in pipeline due to reflection, with the effect of enhancing sound elimination, to improve the sound elimination capability of elbow muffler.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction technology, and in particular to a bent-pipe silencer 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 utility model patent application number CN218030519U, which includes an upper silencer chamber and a lower silencer chamber. The lower silencer chamber includes a connector assembly, a left silencer expansion cavity, and a right silencer expansion cavity. The connector assembly includes a serpentine connector pipe and a partition plate fixedly connected to the serpentine connector pipe. The serpentine connector pipe includes a U-shaped bend, a neck section, and a tail section. The U-shaped bend section has a pair of symmetrically arranged opening slits. This utility model, by setting the serpentine connector pipe and the opening slits in combination, utilizes the Helmholtz resonance silencing principle to effectively adjust the silencing frequency range and increase the silencing volume of the target frequency band.

[0004] The above technical solution has the following problems: because the pipes of the serpentine connecting pipe are on the same plane, the airflow travels a short distance within the serpentine connecting pipe, and the airflow can still generate a large amount of noise. Utility Model Content

[0005] In view of this, it is necessary to provide a bend-pipe silencer and compressor that extends the serpentine connecting pipe to reduce noise.

[0006] This utility model provides a bend pipe silencer, including: a bolt, A planar bend, wherein the planar bend is bent and the pipe extends along the same plane, and has a first air inlet end and a first air outlet end, and A three-dimensional curved pipe, wherein the three-dimensional curved pipe is bent and the pipe extends along different planes, and has a second air inlet end and a second air outlet end, wherein the second air inlet end is connected to the first air outlet end.

[0007] In other embodiments, the planar bend is bent into a U-shape, and an open slit is formed on the planar bend.

[0008] In other embodiments, the planar curved pipe has two opening slits, which are arranged symmetrically opposite to each other.

[0009] In other embodiments, the opening slit divides the planar bend into a first bend portion and a second bend portion, wherein the inner diameter of the first bend portion is larger than the outer diameter of the second bend portion.

[0010] In other embodiments, the planar bend includes a symmetrical first half and a second half, the first half and the second half being detachably connected, and the first half and the second half forming the first bend portion and the second bend portion sequentially in the direction of airflow movement.

[0011] In other embodiments, the two opening slits are respectively disposed in the middle of the first half and the second half.

[0012] In other embodiments, the planar bent pipe further includes a first connecting plate and a second connecting plate, the first connecting plate being fixed to the outer surface of the first half and protruding relative to the first half, and the second connecting plate being fixed to the outer surface of the second half and protruding relative to the second half.

[0013] In other embodiments, the three-dimensional curved tube includes a symmetrical third half and a fourth half, the third half and the fourth half being detachably connected.

[0014] In other embodiments, the third half is integrally formed with the first half, and the fourth half is integrally formed with the second half.

[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: This invention includes a planar bend and a three-dimensional bend. The planar bend is curved and extends along the same plane, having a first air inlet and a first air outlet. The three-dimensional bend is also curved and extends along different planes, having a second air inlet and a second air outlet. The second air inlet is connected to the first air outlet. This invention, comprising a planar bend and a three-dimensional bend, with the planar bend extending along the same plane and the three-dimensional bend extending along different planes, creates as many bends as possible in the three-dimensional space. This causes the airflow to change direction multiple times, increasing the flow resistance of the gas and increasing the energy attenuation of sound waves due to reflection within the pipe, thus enhancing the noise reduction effect and improving the noise reduction capability of the bend-pipe silencer. 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 left-side view of the curved pipe muffler of this utility model; Figure 2 This is a right-side view of the curved pipe muffler of this utility model; Figure 3 This is a front view schematic diagram of the bend pipe silencer of this utility model; Figure 4 This is a rear view schematic diagram of the bend pipe muffler of this utility model; Wherein: 1-planar bend, 11-first air inlet end, 12-first air outlet end, 13-opening slit, 14-first bend section, 15-second bend section, 16-first half piece, 17-second half piece, 18-first connecting plate, 19-second connecting plate; 2-Three-dimensional curved pipe, 21-Second air inlet, 22-Second air outlet, 23-Third half piece, 24-Fourth half piece. 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 1-4 As shown, an embodiment of the present invention provides a bent pipe muffler, which includes: a planar bent pipe 1 and a three-dimensional bent pipe 2. The planar bent pipe 1 is bent and the pipe extends along the same plane, and has a first air inlet end 11 and a first air outlet end 12. The three-dimensional bent pipe 2 is bent and the pipe extends along different planes, and has a second air inlet end 21 and a second air outlet end 22. The second air inlet end 21 is connected to the first air outlet end 12.

[0021] This invention includes a planar bend 1 and a three-dimensional bend 2. The planar bend 1 extends along the same plane, while the three-dimensional bend 2 extends along different planes. The three-dimensional bend 2 can extend along different planes, so that the internal pipe is extended as much as possible, thereby increasing the travel of the gas in the bend silencer and improving the silencing effect.

[0022] The key improvement of this application over existing products lies in the fact that by setting up a three-dimensional curved pipe, as many curved sections as possible are formed in the three-dimensional space, so that the airflow changes its direction multiple times when passing through, thereby increasing the flow resistance of the gas and increasing the energy attenuation of sound waves due to reflection in the pipe, which has the effect of enhancing noise reduction.

[0023] Specifically, the planar bent pipe 1 has an opening slit 13. The opening slit 13 cooperates with the bent body of the planar bent pipe 1, and the sound attenuation frequency range can be effectively adjusted by utilizing the Helmholtz resonance sound attenuation principle, thereby increasing the sound attenuation volume of the target frequency band.

[0024] Furthermore, the planar bend 1 is bent into a U-shape, and the opening slit 13 is located in the middle of the planar bend 1.

[0025] Furthermore, two opening slits 13 are formed on the planar bend 1, and the two opening slits 13 are arranged symmetrically opposite each other. The purpose of this design is to make the forces on the airflow flowing out and in from both sides of the planar bend 1 cancel each other out, thereby reducing the vibration noise of the planar bend 1.

[0026] Furthermore, the opening slit 13 divides the planar bend 1 into a first bend portion 14 and a second bend portion 15, wherein the inner diameter of the first bend portion 14 is larger than the outer diameter of the second bend portion 15. This design facilitates the parallel discharge of gas through the opening slit 13 relative to the planar bend 1, preventing the airflow from forming an angle with the planar bend 1 and causing vibration of the planar bend 1.

[0027] In some feasible embodiments, to facilitate the manufacturing of the planar bent tube 1, the planar bent tube 1 includes a symmetrical first half 16 and a second half 17, the first half 16 and the second half 17 being detachably connected, and the first half 16 and the second half 17 sequentially forming the first bent tube portion 14 and the second bent tube portion 15 in the direction of airflow. The purpose of this design is to reduce the manufacturing difficulty and cost of the planar bent tube 1.

[0028] Furthermore, the two opening slits 13 are respectively disposed in the middle of the first half 16 and the second half 17.

[0029] Furthermore, the planar bent pipe 1 also includes a first connecting plate 18 and a second connecting plate 19. The first connecting plate 18 is fixed to the outer surface of the first half-piece 16 and protrudes relative to the first half-piece 16, and the second connecting plate 19 is fixed to the outer surface of the second half-piece 17 and protrudes relative to the second half-piece 17. The purpose of providing the first connecting plate 18 and the second connecting plate 19 is to facilitate the installation and disassembly of the first half-piece 16 and the second half-piece 17.

[0030] Please see Figure 2 If the planar bend 1 is set along the plane containing the XY axis, then the three-dimensional bend 2 extends along the plane containing the XZ axis and the plane containing the ZY axis.

[0031] Furthermore, the three-dimensional curved tube 2 includes a symmetrical third half 23 and a fourth half 24, wherein the third half 23 and the fourth half 24 are detachably connected.

[0032] Furthermore, the third half 23 is integrally formed with the first half 16, and the fourth half 24 is integrally formed with the second half 17. The purpose of this design is to allow the third half 23 and the first half 16 to be injection molded in a single process during production, thereby reducing production costs and improving production efficiency.

[0033] The present invention also includes a compressor, the compressor comprising a compressor body and the aforementioned bent-tube muffler, the bent-tube muffler being connected to the air inlet or air outlet of the compressor body.

[0034] The beneficial effects of this utility model are: This invention includes a planar bend and a three-dimensional bend. The planar bend is curved and extends along the same plane, having a first air inlet and a first air outlet. The three-dimensional bend is also curved and extends along different planes, having a second air inlet and a second air outlet. The second air inlet is connected to the first air outlet. This invention, comprising a planar bend and a three-dimensional bend, with the planar bend extending along the same plane and the three-dimensional bend extending along different planes, creates as many bends as possible in the three-dimensional space. This causes the airflow to change direction multiple times, increasing the flow resistance of the gas and increasing the energy attenuation of sound waves due to reflection within the pipe, thus enhancing the noise reduction effect and improving the noise reduction capability of the bend-pipe silencer.

[0035] 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 bend-pipe silencer, characterized in that, include: A planar bend, wherein the planar bend is bent and the pipe extends along the same plane, and has a first air inlet end and a first air outlet end, and A three-dimensional curved pipe, wherein the three-dimensional curved pipe is bent and the pipe extends along different planes, and has a second air inlet end and a second air outlet end, wherein the second air inlet end is connected to the first air outlet end.

2. The elbow muffler of claim 1, wherein The planar bend is bent into a U-shape, and an open slit is provided on the planar bend.

3. The elbow muffler of claim 2, wherein The planar curved pipe has two opening slits, which are arranged symmetrically opposite to each other.

4. The elbow muffler of claim 2, wherein The opening slit divides the planar bend into a first bend and a second bend, wherein the inner diameter of the first bend is larger than the outer diameter of the second bend.

5. The elbow muffler of claim 4 wherein, The planar bent tube includes a symmetrical first half and a second half, which are detachably connected. The first half and the second half together form the first bent tube portion and the second bent tube portion in sequence in the direction of airflow.

6. The elbow muffler of claim 5 wherein, The two opening slits are respectively disposed in the middle of the first half and the second half.

7. The elbow muffler of claim 5 wherein, The planar bent pipe also includes a first connecting plate and a second connecting plate. The first connecting plate is fixed on the outer surface of the first half and protrudes relative to the first half, and the second connecting plate is fixed on the outer surface of the second half and protrudes relative to the second half.

8. The elbow muffler of claim 7 wherein, The three-dimensional curved tube includes a symmetrical third half and a fourth half, which are detachably connected.

9. The elbow muffler of claim 8, wherein The third half is integrated with the first half, and the fourth half is integrated with the second half.

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

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