CN215566921U

CN215566921U - Noise reduction structure of automobile air conditioner blower

Info

Publication number: CN215566921U
Application number: CN202121591093.1U
Authority: CN
Inventors: 李培松
Original assignee: Chongqing Kezhan Zongchi New Energy Automotive Air Conditioning Co ltd
Current assignee: Chongqing Kezhan Zongchi New Energy Automotive Air Conditioning Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-01-18
Anticipated expiration: 2031-07-14

Abstract

The utility model discloses a noise reduction structure of an automobile air conditioner blower, which comprises a blower, an air pipe and a volute, the blower is positioned in the volute and also comprises a sound insulation assembly, the sound insulation assembly comprises a shell, the volute is positioned in the shell, sound absorption cotton is filled in the shell, the sound absorption cotton is wrapped by the shell, the noise reduction component comprises a hose which is communicated with the volute, the hose is sleeved with a hard corrugated pipe, the inner wall of the hose is fixedly connected with a plurality of support plates which are arranged in a surrounding way, the utility model relates to the field of automobile heating, ventilating and air conditioning assemblies, and the surface of the support plate, which is far away from the hose, is fixedly connected with a support rod, therefore, the blower and the volute are fixed in a soft mode, vibration of the blower cannot be conducted outwards, and noise generated when the blower runs and airflow flows in the volute are absorbed by the sound absorption cotton.

Description

Noise reduction structure of automobile air conditioner blower

Technical Field

The utility model relates to the field of automobile heating ventilation air-conditioning assemblies, in particular to a noise reduction structure of an automobile air-conditioning blower.

Background

The volute of the blower in the existing HVAC (heating ventilation air conditioning assembly) of an automobile is designed by taking a circular air inlet as a design concept and adjusting and designing according to the inner diameter size of an impeller of the blower, the whole structure is formed by assembling and fixing an upper shell and a lower shell of the blower, the installation position and the position of a radiating hole of the blower are reserved on the lower shell, air enters from the circular air inlet of the upper shell of the blower, the impeller is driven to rotate by the rotation of the blower, and accordingly air is guided to enter an air channel. In the process that wind enters the air duct from the air inlet of the upper shell of the blower, noise conditions with different degrees are generated. In testing HVAC noise, a fan can generate noise of different orders and the like, and the main reason is that the air inlet of the fan is axial air inlet along an air inlet, and axial airflow acts on an impeller to cause the impeller to vibrate in the operation process; and when the air flow enters the shell from the air inlet, the air flow generates vibration (namely resonance) with the same frequency on the edge of the air inlet, so that the noise is increased. The generation of noise can cause phenomena of dysphoria, anxiety and the like of a driver during driving, and the comfort of the driver and passengers is reduced.

Therefore, the noise reduction structure of the air blower of the automobile air conditioner is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a noise reduction structure of an automobile air conditioner blower, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a structure of making an uproar falls in vehicle air conditioner air-blower, includes air-blower, tuber pipe and spiral case, the air-blower is located the spiral case and sets up, still includes:

the sound insulation assembly comprises a shell, the volute is arranged in the shell, sound absorption cotton is filled in the shell, and the sound absorption cotton wraps the shell;

the utility model discloses a noise reduction assembly, noise reduction assembly includes the hose, the hose sets up with the spiral case intercommunication, and the cover is equipped with the stereoplasm bellows on the hose, a plurality of backup pads that encircle the setting of inner wall fixed connection of hose, and the backup pad is kept away from the fixed surface of hose and is connected with the bracing piece, the one end that the backup pad was kept away from to the bracing piece offsets with the stereoplasm bellows and sets up, the one end and the tuber pipe intercommunication setting of spiral case are kept away from to the hose.

As a further scheme of the utility model, the inner wall of the shell is fixedly connected with a plurality of sleeves, the sleeves are connected with slide bars in a sliding manner, one ends of the slide bars, which are positioned in the sleeves, are fixedly connected with pistons, and one ends of the slide bars, which are far away from the sleeves, are fixedly connected with the volute.

As a further scheme of the utility model, an Enka net is embedded in the hose, and the hose is made of rubber.

As a further aspect of the present invention, the inner wall of the air duct is provided with a sound insulating material.

As a further scheme of the utility model, a plurality of reinforcing rings are embedded in the inner wall of the hose, and the reinforcing rings are made of aluminum.

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

1. according to the utility model, the sound insulation assembly is arranged, and the shell is matched with the sound absorption cotton, so that the air blower and the volute are flexibly fixed, the vibration of the air blower cannot be conducted outwards, and the sound absorption cotton is used for absorbing the noise generated when the air blower runs and the noise generated when the air flow flows in the volute;

2. according to the utility model, the hose is matched with the hard corrugated pipe, so that the vibration of the blower during operation can not be conducted like an air pipe while the normal flow of air flow is ensured, and on the other hand, the hose and the hard corrugated pipe are supported by arranging vacuum between the hose and the hard corrugated pipe and matching the support plate with the support rod, so that most of noise at the air outlet of the volute can be isolated.

Drawings

FIG. 1 is a schematic sectional view of a noise reduction structure of an air blower of an automobile air conditioner.

FIG. 2 is a schematic cross-sectional view of a hose in a noise reduction structure of an air conditioner blower of an automobile.

FIG. 3 is a schematic cross-sectional view of a sleeve in a noise reduction structure of an air conditioner blower of an automobile.

In the figure: 1. a blower; 2. an air duct; 3. a volute; 4. a housing; 5. sound-absorbing cotton; 6. a hose; 7. a support plate; 8. a support bar; 9. a rigid corrugated tube; 10. a sleeve; 11. a slide bar; 12. a piston; 13. an Enka net; 14. a sound insulating layer; 15. a reinforcement ring.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-3, in an embodiment of the present invention, an automobile air conditioner blower noise reduction structure includes a blower 1, an air duct 2, and a volute 3, where the blower 1 is located in the volute 3, and further includes:

the sound insulation assembly comprises a shell 4, the volute 3 is positioned in the shell 4, sound absorption cotton 5 is filled in the shell 4, the sound absorption cotton 5 wraps the volute 3, the volute 3 is wrapped by the sound absorption cotton 5, and the volute 3 is flexibly fixed;

the subassembly of making an uproar falls, the subassembly of making an uproar includes hose 6, hose 6 sets up with 3 intercommunications of spiral case, and the cover is equipped with stereoplasm bellows 9 on the hose 6, a plurality of backup pads 7 that encircle the setting of inner wall fixed connection of hose 6, and backup pad 7 keep away from the fixed surface of hose 6 and be connected with bracing piece 8, the one end that backup pad 7 was kept away from to bracing piece 8 offsets with stereoplasm bellows 9 and sets up, and the both ends of stereoplasm bellows 9 set up with 2 intercommunications rigid couplings of spiral case 3 and tuber pipe respectively, are the vacuum between stereoplasm bellows 9 and the hose 6, the one end and the 2 intercommunications of tuber pipe that spiral case 3 was kept away from to hose 6 set up.

The utility model discloses a casing 4, including casing 4, casing 10, slide bar 11 and casing 10's a plurality of sleeve pipes 10 of inner wall fixedly connected with, slide bar 11 is located the one end fixedly connected with piston 12 of casing 10, slide bar 11 keeps away from sleeve pipe 10's one end and spiral case 3 fixed connection setting, through setting up sleeve pipe 10 cooperation slide bar 11, can carry on spacingly to spiral case 3, avoids spiral case 3 after inhaling sound cotton 5 internal vibration, and spiral case 3 emergence position offsets with casing 4's inner wall, leads to casing 4's syllable-dividing effect to descend, through setting up piston 12, can make sleeve pipe 10 and slide bar 11 form the effect of air spring to drive spiral case 3 and return initial position.

Hose 6 is embedded to be equipped with en ka net 13, hose 6 is the rubber material, through setting up en ka net 13, can reduce wind and make an uproar, promotes noise reduction effect.

The inner wall of the air pipe 2 is provided with a sound insulation layer 14, and the noise generated by the air flowing in the air pipe 2 can be absorbed by the sound insulation layer 14.

The inner wall of hose 6 inlays and is equipped with a plurality of beaded finish 15, and beaded finish 15 is the aluminium material, through setting up beaded finish 15, can avoid hose 6 to take place deformation to avoid the interior air of hose 6 and the convex-concave hose 6 inner wall to produce the noise.

The working principle of the utility model is as follows: when the air blower is used, the air blower 1 runs in the volute 3, the volute 3 is driven to vibrate by vibration of the air blower 1 when the air blower 1 runs, but the volute 3 is arranged in the shell 4 and collides with the sound absorption cotton 5 nearby when vibrating, the sound absorption cotton 5 can absorb noise generated by the air blower 1 when the air blower runs in the volute 3 when colliding with the volute 3, on the other hand, the volute 3 is communicated with the air pipe 2 through the hose 6 by arranging the noise reduction assembly, so that the vibration of the volute 3 cannot drive the air pipe 2 to vibrate when the volute 3 vibrates, in addition, the support plate 7 is matched with the support rod 8, the hose 6 and the hard corrugated pipe 9 can be vacuumized, the noise conducted outwards by the air blower 1 is isolated, effective noise reduction is realized, and the comfort level of a driver when driving and riding personnel is improved.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a structure of making an uproar falls in vehicle air conditioner air-blower, includes air-blower (1), tuber pipe (2) and spiral case (3), air-blower (1) is located to set up in spiral case (3), its characterized in that still includes:

the sound insulation assembly comprises a shell (4), the volute (3) is positioned in the shell (4), sound absorption cotton (5) is filled in the shell (4), and the sound absorption cotton (5) wraps the shell (4);

the subassembly of making an uproar falls, the subassembly of making an uproar falls includes hose (6), hose (6) and spiral case (3) intercommunication set up, and the cover is equipped with stereoplasm bellows (9) on hose (6), the inner wall fixed connection of hose (6) a plurality of backup pads (7) that set up of encircleing, and backup pad (7) keep away from fixed surface of hose (6) and be connected with bracing piece (8), the one end that backup pad (7) were kept away from in bracing piece (8) offsets with stereoplasm bellows (9) and sets up, the one end and tuber pipe (2) intercommunication setting of spiral case (3) are kept away from in hose (6).

2. The noise reduction structure of the blower of the automobile air conditioner is characterized in that a plurality of sleeves (10) are fixedly connected to the inner wall of the shell (4), slide rods (11) are slidably connected in the sleeves (10), pistons (12) are fixedly connected to one ends, located in the sleeves (10), of the slide rods (11), and one ends, far away from the sleeves (10), of the slide rods (11) are fixedly connected with the volute (3).

3. The noise reduction structure of the blower of the automobile air conditioner is characterized in that an Enka net (13) is embedded in the hose (6), and the hose (6) is made of rubber.

4. The noise reduction structure of a blower for an air conditioner of an automobile according to claim 1 or 2, wherein the inner wall of the air duct (2) is provided with a sound insulating material (14).

5. The noise reduction structure of a blower for an air conditioner of an automobile according to claim 3, wherein the inner wall of the air duct (2) is provided with a sound insulating material (14).

6. The noise reduction structure of the blower of the automobile air conditioner is characterized in that a plurality of reinforcing rings (15) are embedded in the inner wall of the hose (6), and the reinforcing rings (15) are made of aluminum.

7. The noise reduction structure of the blower of the automobile air conditioner is characterized in that a plurality of reinforcing rings (15) are embedded in the inner wall of the hose (6), and the reinforcing rings (15) are made of aluminum.

8. The noise reduction structure of the blower of the automobile air conditioner is characterized in that a plurality of reinforcing rings (15) are embedded in the inner wall of the hose (6), and the reinforcing rings (15) are made of aluminum.