Vehicle air conditioner pipeline with noise reduction structure

Abstract

The utility model discloses a vehicle air conditioner pipeline with a noise reduction structure, which comprises a pipeline main body, and a noise reduction section is arranged on the pipeline main body; the noise reduction section comprises a pipe body, connecting sleeves are arranged at the two ends of the pipe body and communicate with the pipeline body, a reflection groove is formed in the inner wall of the pipe body, flow deflectors are arranged on the inner wall, close to the reflection groove, of the inner wall of the pipe body, and a sound absorption plate is arranged in the reflection groove. According to the utility model, the noise reduction joint is arranged, and the reflecting groove is matched with the sound absorption pipe, so that sound waves swinging back in the pipeline are reflected into the sound absorption pipe structure, the sound waves are mutually interfered and counteracted, and the energy of sound in the air conditioner pipeline is reduced, so that the kinetic energy of the sound waves is effectively reduced, the noise entering a vehicle from the air conditioner pipeline is greatly reduced, and a driver and passengers feel more comfortable; and the flow deflectors are arranged to avoid additional noise caused by friction between air and the reflecting grooves and guide airflow in the air conditioner pipeline to flow normally.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, especially to a vehicle air conditioner pipeline with noise reduction structure. BACKGROUND

[0002] The vehicle air conditioner is composed of a compressor, a condenser, a throttling element, an evaporator, a fan and necessary control components, is an air conditioning system for adjusting temperature and humidity in the vehicle to provide a comfortable environment for passengers, and the vehicle air conditioner pipeline is a pipeline through which air in the vehicle driven by the fan exchanges heat with the evaporator and the condenser.

[0003] In the prior art, the vehicle air conditioner pipeline produces noise when the fan is running due to vibration, airflow friction on the inner wall and vehicle bumping, and the noise is diffused outward through the air outlet, which greatly disturbs the driver and passengers in the vehicle and affects the user's experience, therefore, the vehicle air conditioner pipeline with noise reduction structure is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problems in the prior art and provides a vehicle air conditioner pipeline with noise reduction structure.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A vehicle air conditioner pipeline with noise reduction structure, comprising a pipeline main body, wherein a noise reduction joint is arranged on the pipeline main body.

[0007] The noise reduction joint comprises a pipe body, two ends of the pipe body are provided with connecting sleeves, the connecting sleeves are in communication with the pipeline main body, a reflection groove is formed in the inner wall of the pipe body, a guide vane is arranged on the inner wall of the pipe body close to the reflection groove, a sound absorbing plate is arranged in the reflection groove and extends to the guide vane, and a sound absorbing pipe structure is further arranged on the guide vane.

[0008] Preferably, the sound absorbing pipe structure comprises connecting rods fixedly connected with the guide vanes, one end of each connecting rod close to the other is fixedly connected with an outer pipe, and an inner pipe is arranged in the outer pipe.

[0009] Preferably, the outer pipe and the inner pipe are both conical, and the inner pipe is made of sound absorbing material.

[0010] Preferably, the pipe body is coated with a sound insulation cotton sleeve, and both ends of the sound insulation cotton sleeve extend to the pipeline main body.

[0011] Preferably, one end of the sound absorbing pipe structure with a larger inner diameter is arranged close to the reflection groove.

[0012] Preferably, a plurality of vacuum cavities are arranged between the outer pipe and the inner pipe.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] 1、 the utility model discloses, through setting up the noise reduction section, utilize the reflection groove cooperation sound absorption pipe, the echo sound wave in the pipeline is reflected to the sound absorption pipe structure, makes the sound wave mutual interference cancellation, reduces the energy of the sound in air conditioning pipeline, thereby effectively reduces the kinetic energy of sound wave, makes the noise of air conditioning pipeline into the car greatly, makes the more comfortable of the driver and the passenger, and the setting of the guide vane is to avoid the additional noise that air rubs with reflection groove produces, guides the normal flow of the airflow in air conditioning pipeline;

[0015] 2、 the utility model discloses, through setting up the sound absorption pipe, under the premise of not interfering the airflow flow in air conditioning pipeline, can cooperate the reflection groove to make the mutual interference between the sound wave, and the inner tube of sound absorption material is made, further reduces the noise in air conditioning pipeline, makes the noise along the air conditioning pipeline into the car can be almost completely inhibited. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 The structure diagram of the vehicle air conditioner pipeline with the noise reduction structure is provided for the utility model;

[0017] Fig. 2 The structure diagram of the vehicle air conditioner pipeline with the noise reduction structure is provided for the utility model;

[0018] Fig. 3 The structure diagram of the vehicle air conditioner pipeline with the noise reduction structure is provided for the utility model.

[0019] In the drawing: 1, pipeline main body;2, pipe body;3, connecting sleeve;4, reflection groove;5, guide vane;6, connecting rod;7, outer tube;8, inner tube;9, sound insulation cotton cover;10, vacuum cavity. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0021] Referring to Figs. 1-3 A kind of vehicle air conditioner pipeline with noise reduction structure, including pipeline main body 1, the pipeline main body 1 is provided with noise reduction section, and wherein the air conditioner pipeline is connected heat exchange piece (such as evaporator and condenser etc.

[0022] The noise reduction joint comprises a pipe body 2, both ends of the pipe body 2 are provided with a connecting sleeve 3, the connecting sleeve 3 is arranged in communication with the pipe body 1, the inner wall of the pipe body 2 is provided with a reflection groove 4, the cross section of the reflection groove 4 is oval, the inner wall of the pipe body 2 close to the inner wall of the reflection groove 4 is provided with a flow guide vane 5, the reflection groove 4 is provided with an acoustic panel, the acoustic panel extends to the position of the flow guide vane 5, and the flow guide vane 5 is further provided with an acoustic tube structure.

[0023] In this design, when the noise in the pipe body 1 is reflected along the inner wall and conducted to the noise reduction joint, part of the sound wave passes through the acoustic tube structure, and the other part propagates to the acoustic tube after entering the reflection groove 4, so that the sound waves interfere with each other, the kinetic energy of the sound waves is reduced, and the noise is suppressed to a certain extent. The flow guide vane 5 is used to guide the airflow through the noise reduction joint to avoid the airflow blowing to the reflection groove 4 to cause vibration and generate additional noise. The flow guide vane 5 is made of rigid material and is polished, and the acoustic panel is made of the commonly used acoustic panel material in the prior art. The reflection of the sound wave also absorbs part of the sound wave, further reduces the kinetic energy of the sound wave, and ensures that the final sound wave can be reduced to below 30 decibels when passing through the air conditioner filter element with the air. In this design, the sound waves reflected in the pipe are absorbed internally, and part of the sound waves is reflected and interferes with the sound waves propagating with the air. Without affecting the normal use of the air conditioner pipeline and without causing large air resistance to increase the energy consumption of the air conditioning equipment, the noise is effectively suppressed from propagating into the cab.

[0024] Further, the acoustic tube structure comprises a connecting rod 6 fixedly connected with the flow guide vane 5, one end of the connecting rod 6 close to each other is fixedly connected with an outer tube 7, the outer tube 7 is provided with an inner tube 8, the outer tube 7 and the inner tube 8 are both tapered, and the inner tube 8 is made of sound absorbing material. The end of the acoustic tube structure with a larger inner diameter is close to the reflection groove 4;

[0025] In this design, the end of the inner tube 8 close to the cab is flared, and the tapered acoustic tube can make the sound waves reflected by the reflection groove 4 enter the inner tube 8, and then reflected in the inner tube 8 and interfere with the sound waves directly passing through the inner tube 8. The use of the inner tube 8 cooperates with the outer tube 7 to preferentially ensure the sound absorption effect of the inner tube 8 and the supporting effect of the outer tube 7 and the connecting rod 6, so as to avoid the whole acoustic tube structure vibrating in the pipe body 2 and generating additional noise when blown by the airflow.

[0026] Further, the pipe body 2 is wrapped with a soundproof cotton sleeve 9, and the both ends of the soundproof cotton sleeve 9 extend to the pipe body 1. The both ends of the pipe body 2 can be connected with the pipe body 1 by using flexible material, so that the pipe body 2 can convert the kinetic energy of the sound wave into its own vibration. The soundproof cotton sleeve 9 can prevent the noise from spreading outward, and can achieve more effective noise reduction effect.

[0027] Further, a plurality of vacuum cavities 10 are arranged between the outer tube 7 and the inner tube 8, and the vacuum cavities 10 are arranged to inhibit the sound waves in the inner tube 8 from being reflected and then transmitted outward again, thereby improving the sound elimination effect of the sound elimination tube.

[0028] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent substitutions or changes within the technical range disclosed by the present application, and all of them should be covered within the protection scope of the present application.

Claims

1. A vehicle air conditioning duct having a noise reduction structure, comprising a duct main body (1), characterized by, The pipeline body (1) is provided with a noise reduction section; The noise reduction section comprises a pipe body (2), both ends of the pipe body (2) are provided with a connecting sleeve (3), the connecting sleeve (3) is in communication with the pipeline body (1), the inner wall of the pipe body (2) is provided with a reflection groove (4), the inner wall of the pipe body (2) close to the reflection groove (4) is provided with a guide vane (5), the reflection groove (4) is provided with an acoustic panel, and the acoustic panel extends to the position of the guide vane (5), and the guide vane (5) is further provided with an acoustic tube structure.

2. The air conditioning duct for vehicle with noise reduction structure according to claim 1, characterized in that, The acoustic tube structure comprises a connecting rod (6) fixedly connected with the guide vane (5), and the connecting rod (6) is fixedly connected with an outer tube (7) at one end close to each other.

3. The air conditioning duct for vehicle with noise reduction structure according to claim 2, characterized in that, The outer tube (7) and the inner tube (8) are both conical, and the inner tube (8) is an acoustic material.

4. The air conditioning duct for vehicle with noise reduction structure according to claim 1, characterized in that, The pipe body (2) is coated with a sound insulation cotton sleeve (9), and both ends of the sound insulation cotton sleeve (9) extend to the position of the pipeline body (1).

5. The air conditioning duct for vehicle with noise reduction structure according to claim 1, characterized in that, The end of the acoustic tube structure with a larger inner diameter is close to the reflection groove (4).

6. The air conditioning duct for vehicle with noise reduction structure according to claim 2, characterized in that, A plurality of vacuum cavities (10) are arranged between the outer tube (7) and the inner tube (8).

Images