CN2162130Y

CN2162130Y - Device for reducing blower noise shake

Info

Publication number: CN2162130Y
Application number: CN 93215327
Authority: CN
Inventors: 林志昌
Original assignee: HUACHANG INDUSTRY Co Ltd
Current assignee: HUACHANG INDUSTRY Co Ltd
Priority date: 1993-06-02
Filing date: 1993-06-02
Publication date: 1994-04-20
Anticipated expiration: 2003-06-02

Abstract

The utility model relates to a device for reducing blower noise shake. The utility model is an improvement aiming at the deficiency that the noise and the vibration is produced by the turbulent flow and the vortex, when the present blower extracts the air to make the air enter the machine. The utility model comprises a cone-shaped impeller body, an air extracting cover body with a cone cover, and a flow interrupting bearing rib in a machine body, wherein, a plurality of arc-shaped blades are distributed on the cone surface at the outside of the impeller body in the equal distance, and the inside of the cone cover of the air extracting cover body is smooth bowl surface and the basal part of the cone cover of the air extracting cover body is provided with an annular groove. The inside of the cone cover is sheathed at the arc-shaped blades position; the impeller body can make the air in the outer part of the machine absorbed in cone-shaped way by an air intake at the center of the cone cover; the air can be blown the smooth bowl face and the annular groove at the inside of the cone cover and the flow interrupting bearing rib at the inner part of the machine body, so that the utility model can reduce the vibration and the noise.

Description

Device for reducing blower noise shake

The utility model relates to a kind of hair-dryer, is meant a kind of device that lowers the blowing noise vibration especially.

Now with hair-dryer in when work produce noise and vibrations owing to easily produce eddy current when bleeding into machine, have problems in the use.

The new purpose of this practicality just provides a kind of device that lowers the blowing noise vibration.

A kind of device that lowers the hair-dryer noise vibration according to the utility model provides comprises a wheel blade body and a draft hood, and arranges in pairs or groups a guard and a body and a motor and use, and wherein the wheel blade body can be installed on the power transmission shaft of body inner motor; It is characterized in that:

The wheel blade body is a taper shape, and a build-in cover is established in the inboard in the central, and lays the arcuation blade first-class of its conical surface outside, and arcuation blade outer rim is parallel to the conical surface, makes its arcuation blade outer rim also become taper;

Bleeding in the cover body is the awl cover of an open circles taper, and awl cover top is an air intake, and awl cover root edge then is fixed with one with a screening sound cover cylindraceous; Awl cover inboard is slick and sly bowl face in addition, and awl cover inside base then is the annular groove of an imploded arcs; The body inner shafts is laid with an amount of flow-disturbing fin between grade;

Mat it, the wheel blade body is installed on the power transmission shaft of motor with its build-in cover, the cover body of bleeding then covers solid at body rear end, and and make its awl cover cover the arcuation sheet that overlays on the wheel blade body with its little interval of slick and sly bowl face; Guard then is installed on the rear end of the cover body of bleeding.

As for detailed construction of the present utility model and how to reach aforementioned effect, still please cooperate graphic, in order to explanation, understand:

Fig. 1 is existing structure and air inlet schematic diagram with the axial-flow type hair-dryer.

Fig. 2 is that the right side of hair-dryer shown in Figure 1 is looked, and shows the ring cone top part of air-flow.

Fig. 3 is existing structure and air inlet schematic diagram with centrifugal blower.

Fig. 4 is analysing and observe of hair-dryer shown in Figure 3, shows that air-flow enters situation.

Fig. 5 is a three-dimensional exploded view of the present utility model.

Fig. 6 is cutaway view of the present utility model (combination and a schematic diagram).

Fig. 7 is a schematic diagram of the present utility model, shows that air sucks situation.

1 wheel blade body 2 cover body 3 bodies of bleeding

4 guards, 5 motors, 11 build-in covers

12 conical surfaces, 13 arcuation blades, 21 awl covers

22 air intakes 23 hide sound cover 24 slick and sly bowl faces

25 annular grooves, 31 flow-disturbing fins, 51 power transmission shafts

Wheel blade body 1 is a taper shape, and build-in cover 11 is established in the inboard in the central, and in its conical surface 12 outsides first-class lay arcuation blade 13, and arcuation blade 13 outer rims are parallel to the conical surface 12, make its arcuation blade outer rim also become taper; Bleeding in the cover body 2 is the awl cover 21 of an open circles taper, and awl cover 21 tops are an air intake 22, and awl cover 21 inboards are a slick and sly bowl face 24, and its inside base promising an arcuation that concaves, an annular groove 25 that promptly inwardly concaves; Except that the projection (not label) that four support fixing motor 5 usefulness are arranged, axially lay an amount of flow-disturbing fin 31 between waiting in addition as for body 3 sidewalls; Also help to reduce the vibration of motor 5 with four supporting bolt fixing motors 5 again.Because annular groove 25 can be parallel to its arc bowl face for complying with slick and sly bowl face 24() inner concave arc surface, so can make the little sinuous flow of wheel blade body 1 base portion reduce to minimum and almost friction and noise really, and change existing disappearance with structure, (and as annular groove 25 only be that straight ring is recessed and still can produce no small noise and tremble; This annular groove 25 is to adopt straight ring to be arranged with meter when the former design of the inventor, but the above-mentioned shortcoming of the tool of carrying on as before is that improvement is the present form of the utility model, and this all tests voluntarily and get through the inventor; Again, the imploded arcs form of the utility model annular groove 25 is through the inventor Mold Making person that makes an application for increase, also give can " die sinking " technical guarantee.

Mat it, wheel blade body 1 is fixed on the power transmission shaft 51 of motor 5 with its build-in cover 11, the cover body 2 of bleeding then cover solid in body 3 rear ends, and slick and sly bowl of 24 covers of face of its awl cover 21 inboards overlay on outside the arcuation blade 13 of wheel blade body 1, between the two the little space of Yu only; Be installed in as for 4 of guards on the rear end of the body 2 of bleeding.

After wheel blade body 1 rotates, its arcuation blade 13 can be sucked air by air intake 22, air outside then is inhaled into the cover body 2 of bleeding to enter air intake 22 with taper shape, and its sinuous flow district in cone-shaped nose will reduce to minimum, and be positioned at and hide sound cover 23, so, though still produce minimum noise and vibrations, reduced manyly, the mark through hiding sound cover 23 covers again, and noise more reduces, and air-flow is through 31 of the flow-disturbing fins of the slick and sly bowl face 24 back importing body 3 of awl cover 21, blow out glidingly outside the body 3, again, the annular groove 25 of slick and sly bowl face 24 base portions can make airflow centrifugal throw away little sinuous flow (as shown in Figure 6) must be had guiding and reduce vibrations, reduce the effect of noise.So with respect to existing articles for use, the effect that the utility model produced is quite distinguished.

Claims

A kind of device that lowers the hair-dryer noise vibration comprises a wheel blade body and a draft hood, and arranges in pairs or groups a guard and a body and a motor and use, and wherein the wheel blade body can be installed on the power transmission shaft of body inner motor; It is characterized in that:

The wheel blade body is a taper shape, and a build-in cover is established in the inboard in the central, and lays the arcuation blade first-class of its conical surface outside, and arcuation blade outer rim is parallel to the conical surface, makes its arcuation blade outer rim also become taper;

Bleeding in the cover body is the awl cover of an open circles taper, and awl cover top is an air intake, and awl cover root edge then is fixed with one with a screening sound cover cylindraceous; Awl cover inboard is slick and sly bowl face in addition, and awl cover inside base then is the annular groove of an imploded arcs; The body inner shafts is laid with an amount of flow-disturbing fin between grade;

Mat it, the wheel blade body is installed on the power transmission shaft of motor with its build-in cover, the cover body of bleeding then covers solid at body rear end, and and make its awl cover cover outside the arcuation blade that overlays on the wheel blade body with its little interval of slick and sly bowl face; Guard then is installed on the rear end of the cover body of bleeding.