CN211146863U

CN211146863U - Central air conditioning air inlet noise reduction piece

Info

Publication number: CN211146863U
Application number: CN201922193367.0U
Authority: CN
Inventors: 蔡圣刚; 蔡圣木; 丁育华
Original assignee: Anhui Province East Yu Refrigeration Technology Co ltd
Current assignee: Anhui Province East Yu Refrigeration Technology Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-07-31
Anticipated expiration: 2029-12-09

Abstract

The utility model belongs to the technical field of the central air conditioning technique and specifically relates to a central air conditioning air inlet noise elimination piece, including outer flight and interior noise elimination pipe, the outside of noise elimination pipe and paste the installation of air inlet duct inner wall including outer flight spiral winding, set up the noise elimination discharge hole that makes gas flow between outer flight and interior noise elimination pipe on the interior noise elimination pipe, the outside of outer flight comprises elastic construction, and the inside cover of outer flight is equipped with interior steel sheet, interior steel sheet does not contact with the chamber wall of outer flight. When the air inlet pipeline enters air, air flows back and forth between the silencing plate assemblies consisting of the outer spiral plates and the inner silencing pipe, and the air channel is expanded, the moving path of the air is prolonged, and meanwhile, the sound attenuation, noise reduction and shock absorption work is carried out more fully.

Description

Central air conditioning air inlet noise reduction piece

Technical Field

The utility model relates to a central air conditioning technical field especially relates to a central air conditioning air inlet noise damping piece.

Background

The central air conditioner is an air conditioning system which mainly comprises one or more cold and heat source systems and a plurality of air conditioning systems, and the principle of liquid gasification refrigeration is adopted to provide required cold energy for the air conditioning systems so as to offset the heat load of the indoor environment; the heating system provides the air conditioning system with the required heat to offset the indoor environment cooling and heating load.

The silencing sheet is used as a silencing component of an air inlet pipeline of a central air conditioner, and airflow noise in a ventilation and air conditioning system is reduced by utilizing principles of sound absorption, reflection, interference and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the noise reduction piece simple structure among the prior art, though have certain noise reduction noise elimination effect, but airflow channel is big, very big reduction its working effect's shortcoming, and the central air conditioning air inlet noise elimination piece that provides.

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

the design is a central air-conditioning air inlet silencing piece, which comprises an outer spiral piece and an inner silencing pipe, wherein the outer part of the outer spiral piece is spirally wound on the inner silencing pipe and is attached to the inner wall of an air inlet pipeline, and a silencing flow hole for enabling gas to flow between the outer spiral piece and the inner silencing pipe is formed in the inner silencing pipe.

Preferably, the outer spiral piece is composed of an elastic structure, and an inner steel sheet is sleeved inside the outer spiral piece.

Preferably, the inner steel sheet is not in contact with the cavity wall of the outer spiral sheet.

Preferably, the number of the inner muffling pipes is a plurality of and the inner muffling pipes are nested with each other, and the inner muffling pipes are respectively provided with communicated muffling flow holes.

Preferably, the silencing flow holes on every two adjacent inner silencing tubes are distributed in a staggered mode.

The utility model provides a pair of central air conditioning air inlet noise damping piece, beneficial effect lies in:

when the air inlet pipeline enters air, air flows back and forth between the silencing plate assemblies consisting of the outer spiral plates and the inner silencing pipe, and the air channel is expanded, the moving path of the air is prolonged, and meanwhile, the sound attenuation, noise reduction and shock absorption work is carried out more fully.

The utility model discloses simple structure, the simple operation, noise damping piece simple structure in the solution prior art that can be fine has certain noise reduction noise elimination effect, but airflow channel is big, very big reduction its working effect's shortcoming, stronger practicality has.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a partial cut-off structure of the outer and the middle helical fins of the present invention;

fig. 3 is a schematic structural view of the middle and inner muffler pipes of the present invention;

fig. 4 is a schematic side sectional structure view of the middle and inner muffling tube of the present invention.

In the figure: 1-external spiral sheet, 11-internal steel sheet, 2-internal silencing pipe and 21-silencing flow hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, an air intake noise reduction sheet of a central air conditioner comprises an outer spiral sheet 1 and an inner noise reduction pipe 2, wherein the outer spiral sheet 1 is spirally wound outside the inner noise reduction pipe 2 and is attached to the inner wall of an air intake pipeline, the inner noise reduction pipe 2 is provided with a noise reduction flow hole 21 which enables air to flow between the outer spiral sheet 1 and the inner noise reduction pipe 2, when the air intake pipeline enters air, the air flows back and forth between the outer spiral sheet 1 and the inner noise reduction pipe 2, and the air channel is enlarged, the moving path of the air is prolonged, and meanwhile, the noise reduction, noise reduction and vibration reduction work are more sufficient.

The outside of outer flight 1 comprises elastic construction, and the inside cover of outer flight 1 is equipped with interior steel sheet 11, and wind blows outside outer flight 1's outside and makes outer flight 1 passive elastic deformation, cushions wind-force, reaches certain shock attenuation, noise reduction effect, and the process that outer flight 1 kick-backs is executed the impact force to wind and is accelerated its flow, guarantees outer flight 1's firm intensity through interior steel sheet 11 simultaneously, further improves the validity of this noise elimination subassembly work.

The inner steel sheet 11 is not contacted with the cavity wall of the outer spiral sheet 1, so that the outer spiral sheet 1 has enough deformation and buffer space, the silencing effectiveness of the outer spiral sheet 1 is ensured, and the inner cavity wall of the outer spiral sheet 1 is prevented from colliding with the inner steel sheet 11 to generate vibration.

The number of the inner silencing pipes 2 is a plurality of and the inner silencing pipes are mutually nested, the inner silencing pipes 2 are respectively provided with communicated silencing flow holes 21, wind moves back and forth among the inner silencing pipes 2, the moving path of the wind is increased, and meanwhile, the wind is enabled to be fully noise-reduced and silenced in the process of moving back and forth between the outer spiral piece 1 and the inner silencing pipes 2.

The silencing flow holes 21 on every two adjacent inner silencing pipes 2 are distributed in a staggered mode, so that when wind moves between every two adjacent inner silencing pipes 2, the wind moves in the containing cavity of each inner silencing pipe 2 and is subjected to noise reduction, and the situation that the wind directly flows out through the silencing flow holes 21 and cannot achieve an effective noise reduction effect is avoided.

The working principle is as follows:

the outer part of the inner silencing pipe 2 is attached to the inner wall of the air inlet pipeline, when the air enters the air inlet pipeline, air flows back and forth between the outer spiral sheet 1 and the inner silencing pipe 2, and the air channel is expanded, the moving path of the air is prolonged, and meanwhile, the sound attenuation, noise reduction and shock absorption work is carried out more fully.

In the description of the present invention, it is to be understood that the terms "outside", "upper", "between", "inside", "outside", "cavity wall", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounting," "nesting," and the like are to be construed broadly, and unless otherwise explicitly limited, the specific meaning of the terms in the present invention will be understood by those skilled in the art as per the specific context.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a central air conditioning air inlet noise damping piece which characterized in that: including outer flight and interior muffler pipe, the outside of muffler pipe and subsides air inlet pipe inner wall installation including outer flight spiral winding, set up the noise elimination discharge orifice that makes gas flow between outer flight and interior muffler pipe on the interior muffler pipe.

2. The central air-conditioning air inlet silencing sheet of claim 1, characterized in that: the outer spiral piece is composed of an elastic structure, and an inner steel sheet is sleeved inside the outer spiral piece.

3. The central air-conditioning air inlet silencing sheet of claim 2, characterized in that: the inner steel sheet is not contacted with the cavity wall of the outer spiral sheet.

4. The central air-conditioning air intake noise reduction sheet according to any one of claims 1 to 3, characterized in that: the number of the inner silencing tubes is a plurality of and the inner silencing tubes are nested with each other, and the inner silencing tubes are respectively provided with communicated silencing flow holes.

5. The central air-conditioning air inlet silencing sheet of claim 4, wherein: the silencing flow holes on every two adjacent inner silencing pipes are distributed in a staggered mode.