Silencing device for automobile air conditioner pipeline

Abstract

The utility model discloses an automobile air conditioner pipeline silencer which comprises a middle shell, an air inlet pipe and an air outlet pipe are arranged on the two sides of the middle shell respectively, a plurality of through holes are formed in the air inlet pipe and the air outlet pipe, silencing plates are symmetrically and movably arranged in the middle shell, and the interior of the middle shell is divided into a plurality of noise reduction areas by the silencing plates. A plurality of silencing plates are arranged in the middle shell, elastic pieces for pulling the silencing plates to be close to each other are arranged between the silencing plates, ejector blocks for pushing the silencing plates to be far away from each other are further arranged between the silencing plates, and connecting rods penetrating through the middle shell are fixed to the ejector blocks. Noise is continuously reflected between the silencing plate and the middle shell, opposite sound waves in noise sound waves are collided and counteracted, the mutual collision counteracting effect of the noise sound waves is improved, the space of the noise reduction area is adjusted by adjusting the distance between the silencing plate and the middle shell, adjustment is conveniently conducted according to the noise reduction requirement, and silencing is maximized.

Description

TECHNICAL FIELD

[0001] The utility model relates to automobile air conditioning accessory technical field especially is automobile air conditioning pipeline silencer. BACKGROUND

[0002] With the development of automobile industry, people's requirement for the driving comfort of vehicle is higher and higher, and the noise often appears in the process of refrigeration or heating when the driver uses the automobile air conditioner, which directly affects the user's experience. In order to improve this situation, a silencer is generally installed on the air conditioner pipeline to eliminate noise.

[0003] For example, the patent with the application number 201620880353. X discloses a kind of silencer of automobile air conditioner pipeline, by setting the air hole box that gas pipeline is wrapped in muffler body and sound board are refracted to reach the purpose of noise reduction to noise, but air hole box and sound board are set dispersed, cannot effectively cancel the sound wave of noise, while the sound board that eliminates noise cannot adjust position, is inconvenient according to demand adjustment, cannot reach optimal sound elimination effect, therefore a kind of silencer of automobile air conditioner pipeline is presented. UTILITY MODEL CONTENT

[0004] In order to solve the problems in the above background art, the utility model provides a kind of silencer of automobile air conditioner pipeline.

[0005] The utility model adopts the following technical scheme: a kind of silencer of automobile air conditioner pipeline, including intermediate shell, the intermediate shell two sides are respectively provided with air inlet pipe and air outlet pipe, the air inlet pipe and the air outlet pipe are all provided with multiple through holes, the intermediate shell is symmetrically movably provided with sound attenuation board, the sound attenuation board divides the intermediate shell into multiple noise reduction zones, the elastic member that the sound attenuation board is set between pulls the sound attenuation board to each other, the top block that the sound attenuation board is also set between pushes the sound attenuation board to each other away, the connecting rod that the top block is fixed with is penetrated through intermediate shell.

[0006] As preferred in the utility model, the intermediate shell includes shell and inner shell, a vacuum chamber is provided between the shell and the inner shell, and soundproof cotton is further provided on the side of the inner shell close to the shell.

[0007] As preferred in the utility model, the cross-sectional shape of the top block is oval.

[0008] As preferred in the utility model, a threaded portion is provided on the part of the outer wall of the connecting rod penetrated through the shell, and the connecting rod is movably connected with the shell through the threaded portion.

[0009] As preferred in the utility model, a knob is further fixed on the end of the connecting rod, and anti-slip lines are engraved on the outer wall of the knob.

[0010] As the utility model is preferred, the outer wall of the sound-absorbing board and the inner wall of the inner shell are provided with a plurality of protrusions, and the protrusions are semispherical.

[0011] As the utility model is preferred, a plurality of through openings for gas to pass through are formed in the sound-absorbing board, the through opening position on the sound-absorbing board close to the air inlet pipe is arranged in a direction away from the air inlet pipe, the through opening position on the sound-absorbing board close to the air outlet pipe is arranged in a direction away from the air outlet pipe, and the through opening positions on the two sound-absorbing boards are opposite.

[0012] As the utility model is preferred, the elastic member is a tension spring, and the two ends of the tension spring are fixedly connected with the two sound-absorbing boards respectively.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1、The utility model discloses a plurality of noise reduction zones separated by sound-absorbing boards collide with each other for the gas noise entering the middle shell, and the noise is reflected between the sound-absorbing board and the middle shell continuously, so that the opposite sound waves in the noise sound wave collide and cancel each other, thereby reducing the sound energy, improving the effect of noise collision and cancellation, and achieving the purpose of noise reduction.

[0015] 2、The utility model discloses that the connecting rod adjusts the top block to rotate, and adjusts the sound-absorbing boards to approach or move away from each other under the action of the elastic member, so as to adjust the distance between the sound-absorbing boards and the middle shell, realize the adjustment of the space of the noise reduction zone, and conveniently adjust the noise reduction demand to achieve the maximization of noise reduction. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure front view cross section schematic diagram of the utility model;

[0017] Figure 2 It is the whole structure side view cross section schematic diagram of the utility model;

[0018] Figure 3 It is the top block and connecting rod structure schematic diagram of the utility model.

[0019] In the drawing: 1, middle shell; 11, air inlet pipe; 12, air outlet pipe; 13, outer shell; 14, inner shell; 15, sound insulation cotton; 16, sound-absorbing board; 161, tension spring; 17, top block; 171, connecting rod; 172, handle; 18, protrusion. DETAILED DESCRIPTION

[0020] For the convenience of understanding the utility model, the utility model will be described more comprehensively below with reference to relevant drawings, and several embodiments of the utility model are given in the drawings, but the utility model can be realized by different forms and is not limited to the embodiments described in the text, on the contrary, these embodiments are provided to make the disclosed content of the utility model more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intervening element, and when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intervening element, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs, the terminology used in the specification of the utility model herein is only for the purpose of describing specific embodiments and is not intended to limit the utility model, the term "and / or" used herein includes any and all combinations of one or more relevant listed items.

[0023] Please refer to Figures 1-3 The utility model provides a kind of automobile air conditioning pipeline silencer, including intermediate shell 1, intermediate shell 1 two sides are provided with air inlet pipe 11 and air outlet pipe 12 respectively, a plurality of through holes are provided on air inlet pipe 11 and air outlet pipe 12, symmetrically movable silencer plate 16 is provided in intermediate shell 1, silencer plate 16 divides the inside of intermediate shell 1 into multiple noise reduction zones, multiple noise reduction zones separated by silencer plate 16 mutually collide with the gas noise entering the inside of intermediate shell 1, noise continuously reflects between silencer plate 16 and the inside of intermediate shell 1, opposite sound waves in noise sound wave collide and cancel out, so as to reduce sound energy, improve the effect of noise collision and cancellation, ensure the effect of silencing and noise reduction, elastic member that pulls silencer plate 16 close to each other is provided between silencer plate 16, top block 17 that pushes silencer plate 16 away from each other is also provided between silencer plate 16, connecting rod 171 that penetrates intermediate shell 1 is fixed on top block 17, the distance between silencer plate 16 and intermediate shell 1 is adjusted by adjusting the rotation of top block 17 by connecting rod 171, under the action of elastic member, silencer plate 16 is adjusted to approach or move away from each other, so as to adjust the distance between silencer plate 16 and intermediate shell 1, realize the space of adjusting noise reduction zone, it is convenient to adjust for noise reduction demand, to reach the maximization of silencing.

[0024] Please refer to Figures 1-2The intermediate shell 1 comprises an outer shell 13 and an inner shell 14, a vacuum cavity is arranged between the outer shell 13 and the inner shell 14, and soundproof cotton 15 is arranged on the side of the inner shell 14 close to the outer shell 13; the sound wave leakage inside the intermediate shell 1 is reduced through the vacuum cavity and the soundproof cotton 15, and the noise sound wave is further absorbed in cooperation with the soundproof cotton 15, so that the sound reduction effect of the intermediate shell 1 is improved.

[0025] Please refer to Figures 1-3 The cross section of the top block 17 is in an oval shape, a threaded portion is formed on the outer wall of the connecting rod 171 and penetrates the outer shell 13, the connecting rod 171 is movably connected with the outer shell 13 through the thread, and the automatic locking is facilitated when the connecting rod 171 is rotated to drive the top block 17 to rotate, a handle 172 is further fixed to the end of the connecting rod 171, anti-skid lines are formed on the outer wall of the handle 172, the handle 172 is convenient for rotating the connecting rod 171 to drive the top block 17 to rotate for adjustment, and the anti-skid lines improve the friction force of the handle 172, so that the handle 172 is prevented from slipping.

[0026] Please refer to Figures 1-2 The outer wall of the sound-absorbing plate 16 and the inner wall of the inner shell 14 are provided with a plurality of convex blocks 18, the convex blocks 18 are in a semispherical shape, the reflection angle of noise is improved through the convex blocks 18, the effect of collision and offset of noise is improved, and the reflection angle of the sound wave is further improved through the semispherical convex blocks 18.

[0027] Please refer to Figure 1 A plurality of through holes for gas to pass through are formed in the sound-absorbing plate 16, the through hole position of the sound-absorbing plate 16 close to the air inlet pipe 11 is arranged in a direction away from the air inlet pipe 11, the through hole position of the sound-absorbing plate 16 close to the air outlet pipe 12 is arranged in a direction away from the air outlet pipe 12, the through hole positions of the two sound-absorbing plates 16 are opposite, the path space of noise reflection between the sound-absorbing plate 16 and the intermediate shell 1 is prolonged through the design, there is enough area space in the intermediate shell 1 for noise to collide and offset, and the sound-absorbing effect is improved.

[0028] Please refer to Figures 1-2 The elastic member is a tension spring 161, and the two ends of the tension spring 161 are fixedly connected with the two sound-absorbing plates 16 respectively, so that the stability of the tension spring 161 in pulling the sound-absorbing plates 16 to move close to each other is ensured.

[0029] The working principle of the utility model is as follows:

[0030] The gas noise in the air conditioner pipeline of the automobile first enters the inner shell 14 through the air inlet pipe 11, and the noise is dispersed through the through hole on the air inlet pipe 11 when entering the inner shell 14, thereby achieving a preliminary noise reduction effect. The noise sound waves entering the inner shell 14 are continuously reflected and collided between the sound-absorbing plate 16 and the inner wall of the inner shell 14, and the angle of noise reflection is improved by the convex block 18, so that the noise is better collided and sound-absorbed. The opposite sound waves in the noise are collided and offset, thereby achieving the effect of reducing sound energy. The connecting rod 171 and the top block 17 are rotated by rotating the handle 172, and the longer side of the oval top block 17 is in contact with the sound-absorbing plate 16 to drive the two sound-absorbing plates 16 to move away from each other, thereby reducing the distance between the sound-absorbing plate 16 and the inner shell 14. The movement of the sound-absorbing plate 16 reduces the space between the sound-absorbing plate 16 and the inner wall of the inner shell 14. When the shorter side of the top block 17 is in contact with the sound-absorbing plate 16, the two sound-absorbing plates 16 are driven to move close to each other under the action of the tension spring 161, thereby increasing the space between the sound-absorbing plate 16 and the inner wall of the inner shell 14. The rotation adjusts the angle and space of the noise sound wave reflection, and facilitates adjustment according to the noise reduction requirement to maximize the noise reduction effect. Finally, the gas after noise elimination enters the air outlet pipe 12 through the through hole on the air outlet pipe 12 and is discharged from the air outlet pipe 12. The vacuum chamber between the outer shell 13 and the inner shell 14 effectively reduces the leakage of sound waves in the middle shell 1, and cooperates with the sound insulation cotton 15 to further improve the sound reduction effect of the middle shell 1.

[0031] The utility model is described above in conjunction with the drawings, and obviously, the specific implementation of the utility model is not limited by the above mode. As long as the method concept and technical scheme of the utility model are adopted for such non-essential improvement, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An automotive air conditioning line silencer, characterized by: The utility model provides an improved sound reduction device, which comprises an intermediate shell (1), an air inlet pipe (11) and an air outlet pipe (12) are arranged on both sides of the intermediate shell (1) respectively, a plurality of through holes are arranged on the air inlet pipe (11) and the air outlet pipe (12), a sound reduction plate (16) is movably arranged in the intermediate shell (1) symmetrically, the sound reduction plate (16) divides the intermediate shell (1) into a plurality of noise reduction zones, elastic members are arranged between the sound reduction plates (16) to pull the sound reduction plates (16) to move close to each other, and top blocks (17) are arranged between the sound reduction plates (16) to push the sound reduction plates (16) to move away from each other, and the top blocks (17) are fixed with connecting rods (171) penetrating the intermediate shell (1).

2. The sound attenuator for an air conditioning line of an automobile according to claim 1, characterized by: The intermediate shell (1) comprises an outer shell (13) and an inner shell (14), a vacuum chamber is arranged between the outer shell (13) and the inner shell (14), and sound insulation cotton (15) is further arranged on the side of the inner shell (14) close to the outer shell (13).

3. The sound attenuator for an air conditioning line of an automobile according to claim 2, characterized in that: The top block (17) has an oval cross section.

4. The sound attenuator of claim 3, wherein: The connecting rod (171) is movably connected with the outer shell (13) through a threaded portion formed on the outer wall of the connecting rod (171) and penetrating the outer shell (13).

5. The sound attenuator for an air conditioning line of an automobile according to claim 4, characterized in that: A knob (172) is further fixed on the end of the connecting rod (171), and an anti-skid pattern is formed on the outer wall of the knob (172).

6. The sound attenuator of claim 2, wherein: A plurality of convex blocks (18) are arranged on the outer wall of the sound reduction plate (16) and the inner wall of the inner shell (14), and the convex blocks (18) have a semispherical shape.

7. The sound attenuating device for an air conditioning line of an automobile of claim 1, wherein: A plurality of through openings are formed in the sound reduction plate (16) for gas to pass through, the through openings in the sound reduction plate (16) close to the air inlet pipe (11) are arranged in a direction away from the air inlet pipe (11), the through openings in the sound reduction plate (16) close to the air outlet pipe (12) are arranged in a direction away from the air outlet pipe (12), and the through openings in the two sound reduction plates (16) are arranged in opposite directions.

8. The sound attenuating device for an air conditioning line of an automobile of claim 1, wherein: The elastic member is a tension spring (161), and the two ends of the tension spring (161) are fixedly connected with the two sound reduction plates (16) respectively.

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