CN2336260Y

CN2336260Y - Sound insulation ventilator

Info

Publication number: CN2336260Y
Application number: CN 98234177
Authority: CN
Inventors: 李国培
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-05-08
Filing date: 1998-05-08
Publication date: 1999-09-01
Anticipated expiration: 2008-05-08

Abstract

The utility model provides a sound insulation ventilator, which is characterized in that the sound insulation ventilator is composed of a casing, a middle partition board, a blower, and a sound absorption layer. The middle partition board is vertically arranged in the middle of the casing; the casing is divided into an external chamber and an internal chamber which are communicated with two upper parts; the blower is arranged on an open end on a lower part of the external chamber; an external wall on the lower part of the internal chamber is provided with a plurality of ventilating holes, and the internal wall of the casing and the front and the back walls of the middle partition board are totally provided with the sound absorption layer. Compared with the existing exhaust fan, the sound insulation ventilator has advantages of simple structure, good sound insulation effects, strong anti-attack ability of storms, etc. The sound insulation ventilator is suitable for offices and housing with larger environmental noise.

Description

The sound insulation ventilation blower

The utility model relates to a kind of improved ventilation blower, and particularly a kind of sound insulation ventilation blower is suitable for the bigger building of ambient noise and adopts.

At present, the employed ventilation blower of office and family is ventilating fan, and existing ventilating fan does not have sound arrester.Outdoor noise is easy to reach indoor, more especially near the office building and the household of road, highway and factories and miness, will be subjected to the serious interference of noise.For this noise pollution, remove and close outside window, there also do not have better way to prevent that outdoor noise from reaching through ventilating fan to be indoor.

The purpose of this utility model is to provide a kind of soundproof effect good, sound insulation ventilation blower simple in structure at the problem of existing ventilating fan existence.

Task of the present utility model realizes by this way; This ventilation blower is made up of housing, median septum, blower fan and sound absorbing layer, median septum is perpendicular to be placed in the middle of the housing, housing is divided into mistress and the inner room that two tops are communicated with, blower fan is located at mistress's lower open end, on the outer wall of the bottom of inner room, have several air vents, be provided with sound absorbing layer at the inwall of housing and the front and rear wall of median septum.

The utility model is work like this: this ventilation blower is filled on the top or wall of window during use, allows the blower fan of mistress bottom and outdoor the connection get final product.When the startup blower fan carried out air draft, indoor air made from the air vent of inner room bottom and enters inner room, enters the mistress through the median septum top again, after blower fan is discharged outdoor.From structure of the present utility model as can be known, outdoor noise must just pass to indoor through the tortuous passageway of inverted U and aperture, and acoustic resistance is big, adds the sound absorption of the sound-absorbing material that is provided with in the housing, makes the big high attenuation of noise, thereby has realized sound isolation requirement.Therefore, it is good, simple in structure that this ventilation blower has a soundproof effect, and advantage such as manufacturings easily overcomes effectively and has the deficiency that ventilating fan can't sound insulation.In addition, because blower fan is provided with, also can prevent the attack of high wind and heavy rain down.

Below in conjunction with accompanying drawing structure of the present utility model is further described.

Fig. 1 is the front view of a kind of concrete structure of the utility model,

Fig. 2 is along the cutaway view of A-A line among Fig. 1.

Fig. 3 is along the cutaway view of B-B line among Fig. 1.

Shown in accompanying drawing 1-3, the housing of this ventilation blower (1) is square or rectangle, so that be installed on the last lattice instrument bezel of existing door and window.Involutory again being formed by connecting after this housing (1) preferably is drawn into two indent shells and stops with sheet metal, also available plastics or fiberglass are made.On the composition surface in the middle of the housing (1), a median septum (2) is set, housing (1) is divided into shell (3) and the inner room (4) that two tops are communicated with.For reducing the generation of noise, median septum (2) preferably makes the flange of median septum (2) be bonded in housing (1) by welding or use adhesive with housing (1) and upward links together, and does not adopt connector to connect.In housing (1) and at the sound absorbing layer (5) that median septum (2) go up to be pasted can be sponge, staple fibre or glass mat.Many air vents (6) of on the outer wall of inner room (4) bottom, being opened, its diameter is suitable with φ 2-φ 5, erasure effect is not obvious when excessive, is not easy to processing when too small again.It is that the little blower fan of φ 70-φ 100 constitutes side by side that the blower fan (7) that is provided with at mistress (3) lower ending opening place preferably requires to adopt brshless DC motor, impeller diameter by the 2-4 platform according to air quantity, so that reduce the thickness of housing (1) and reduce noise.The rotating speed of blower fan (7) with 2400-2600 rev/min for well.

Office building and house that the utility model is suitable near the bigger road of environmental noise, highway or the formula ore deposit enterprise most use.

Claims

1, a kind of sound insulation ventilation blower, it is characterized in that forming by housing (1), median septum (2), wind (7) and sound absorbing layer (5), median septum is perpendicular to be placed in the middle of the housing (1), housing (1) is divided into mistress (3) and the inner room (4) that two tops are communicated with, blower fan (7) is located at the lower open end of mistress (3), on the bottom outer wall of inner room (4), have several air vents (6), all be provided with sound absorbing layer (5) at the inwall of housing (1) and the front and rear wall of median septum (2).

2, ventilation blower according to claim 1 is characterized in that median septum (2) is that the employing adhesive is bonded to its flange on the housing (1) and housing (1) links together.

3, ventilation blower according to claim 1 is characterized in that described sound absorbing layer (5) adopts sponge, staple fibre felt, glass mat.

4, ventilation blower according to claim 1 is characterized in that blower fan (7) is is that the little blower fan of φ 70-φ 100 constitutes side by side by 2-4 employing brushless electric machine, impeller diameter.