CN214660964U

CN214660964U - Centrifugal fan for breathing machine that noise reduction effect is good

Info

Publication number: CN214660964U
Application number: CN202120288629.6U
Authority: CN
Inventors: 刘静; 吴正刚; 卢慧宇
Original assignee: Jiangsu Banting Medical Equipment Co ltd
Current assignee: Jiangsu Banting Medical Equipment Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-11-09
Anticipated expiration: 2031-02-02

Abstract

The utility model discloses a centrifugal fan for breathing machine that noise reduction effect is good, including first worm shell, vent, air outlet, driving motor and second worm shell, the one end of first worm shell is fixed with the vent, the inside of vent one end is provided with dustproof construction, the bottom and the top of first worm shell all are provided with dismantlement structure, the top of first worm shell one side is provided with the air outlet, the top of air outlet is provided with the structure of making an uproar of falling, the top of card shell is provided with the net of making an uproar of falling, the one end of first worm shell is provided with second worm shell, driving motor is installed to the one end of second worm shell. The utility model discloses a setting has not only realized the device function of being convenient for to maintain, has realized the device dirt-proof function, has realized the device function of making an uproar of being convenient for moreover.

Description

Centrifugal fan for breathing machine that noise reduction effect is good

Technical Field

The utility model relates to a centrifugal fan technical field specifically is a centrifugal fan for breathing machine that noise reduction effect is good.

Background

Along with the continuous development of society and the improvement of living standard of people, the breathing machine is not only used in the medical field, but also gradually popularized and applied in the life of people, and the breathing machine is generally used by combining a centrifugal fan, so that the breathing machine has the effects of ventilation and cooling;

traditional centrifugal fan for breathing machine volume is less in practical application, and in order to reach the requirement of wind pressure, the fan rotational speed is very fast when rotating, can reach twenty thousand more revolutions per minute even, so the noise is great when using, influences people's sleep quality, so need carry out noise reduction when using.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a centrifugal fan for breathing machine that noise reduction effect is good to propose the great problem of centrifugal fan noise when using in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a centrifugal fan with good noise reduction effect for a respirator comprises a first worm-shaped shell, a vent, an air outlet, a driving motor and a second worm-shaped shell, a vent is fixed at one end of the first worm-shaped shell, a dustproof structure is arranged in the interior of one end of the vent, the bottom and the top of the first worm-shaped shell are both provided with a disassembly structure, the top end of one side of the first worm-shaped shell is provided with an air outlet, the top end of the air outlet is provided with a noise reduction structure, the noise reduction structure comprises a clamping shell, a telescopic spring, a limiting block and a noise reduction net, the clamping shell is arranged at the top of the air outlet, the noise reduction net is arranged at the top of the clamping shell, the inner walls of the clamping shell are provided with telescopic springs, and limiting blocks are fixed on one sides of the telescopic springs, a second worm-shaped shell is arranged at one end of the first worm-shaped shell, and a driving motor is installed at one end of the second worm-shaped shell.

Preferably, the dismounting structure comprises a fixed block, a fixed pin, a reset groove, a reset spring and a reset block, wherein the fixed block is arranged at the top end and the bottom end of the first worm-shaped shell, the fixed pin is fixed at one end of the fixed block, the reset groove is formed in the top end of the second worm-shaped shell and the bottom end of the second worm-shaped shell, the reset spring is arranged on two sides of the reset groove, and the reset block is arranged on one side of the reset spring.

Preferably, two groups of reset blocks are arranged in the reset groove, and the reset blocks are symmetrically distributed around the vertical center line of the fixing pin.

Preferably, dustproof construction includes draw-in groove, fixture block and filter screen, the filter screen sets up the inside in vent one end, the outside of filter screen all is provided with the fixture block, the inside of fixture block one side vent all is provided with the draw-in groove.

Preferably, the cross section of the clamping block is smaller than that of the clamping groove, and the clamping block and the clamping groove form a clamping structure.

Preferably, the limiting blocks are arranged on the inner wall of the clamping shell and distributed in an annular shape.

Compared with the prior art, the beneficial effects of the utility model are that: the centrifugal fan for the respirator with good noise reduction effect not only realizes the function of facilitating maintenance of the device, realizes the function of preventing dust of the device, but also realizes the function of facilitating noise reduction of the device;

(1) the first worm-shaped shell is moved to one end of the second worm-shaped shell, so that the fixing pin is moved into the reset groove to push the first worm-shaped shell, the fixing pin can be moved between the reset blocks, the reset blocks can be moved into the reset groove to be clamped with the fixing pin under the elastic action of the reset spring, the first worm-shaped shell and the second worm-shaped shell are fixed with each other, the function of facilitating maintenance of the device is achieved, and convenience of the centrifugal fan for the respirator in use is improved;

(2) the fixture block is matched with the clamping groove by adjusting the position of the filter screen, the filter screen is pushed, and the fixture block slides in the clamping groove, so that the filter screen and the ventilation opening are mutually fixed, and the dustproof function of the device is realized under the filtering action of the filter screen, so that the practicability of the centrifugal fan for the respirator is improved when the centrifugal fan is used;

(3) through moving the card shell to the top of air outlet, according to the size of air outlet, promote the stopper with the help of external force, expanding spring contracts inwards under the effect of external force, will block the shell cover again in the outside of air outlet, and the stopper is released, and under expanding spring's spring action, the stopper is blocked with the outside looks block on air outlet top, under the effect of making an uproar falls, has realized the device function of making an uproar of being convenient for fall to this centrifugal fan for breathing machine suitability when using has been improved.

Drawings

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

fig. 2 is a schematic top view of the cross-sectional structure of the present invention;

fig. 3 is a schematic view of the noise reduction structure of the present invention from the bottom;

fig. 4 is an enlarged schematic structural diagram of a in fig. 1 according to the present invention.

In the figure: 1. a first volute housing; 2. a vent; 3. disassembling the structure; 301. a fixed block; 302. a fixing pin; 303. a reset groove; 304. a return spring; 305. a reset block; 4. a dust-proof structure; 401. a card slot; 402. a clamping block; 403. a filter screen; 5. an air outlet; 6. a noise reduction structure; 601. clamping a shell; 602. a tension spring; 603. a limiting block; 604. a noise reduction net; 7. a drive motor; 8. a second volute housing.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a centrifugal fan for a respirator with good noise reduction effect; the air conditioner comprises a first worm-shaped shell 1, a vent 2, an air outlet 5, a driving motor 7, a second worm-shaped shell 8, wherein the vent 2 is fixed at one end of the first worm-shaped shell 1, a dustproof structure 4 is arranged inside one end of the vent 2, the dustproof structure 4 comprises a clamping groove 401, a clamping block 402 and a filtering net 403, the filtering net 403 is arranged inside one end of the vent 2, the clamping block 402 is arranged outside the filtering net 403, the clamping groove 401 is arranged inside the vent 2 on one side of the clamping block 402, the cross section of the clamping block 402 is smaller than that of the clamping groove 401, and the clamping block 402 and the clamping groove 401 form a clamping structure;

when the structure is used, the fixture block 402 is matched with the clamping groove 401 by adjusting the position of the filter screen 403, the filter screen 403 is pushed, the fixture block 402 slides in the clamping groove 401, so that the filter screen 403 and the ventilation opening 2 are fixed with each other, and under the filtering action of the filter screen 403, the dustproof function of the device is realized, so that the practicability of the centrifugal fan for the respirator is improved when the centrifugal fan is used;

the bottom and the top of the first worm-shaped shell 1 are both provided with a detaching structure 3, the detaching structure 3 comprises a fixed block 301, a fixed pin 302, a reset groove 303, a reset spring 304 and reset blocks 305, the fixed block 301 is arranged at the top end and the bottom end of the first worm-shaped shell 1, one end of the fixed block 301 is fixed with the fixed pin 302, the top end and the inside of the bottom end of the second worm-shaped shell 8 at one end of the fixed pin 302 are both provided with the reset groove 303, both sides inside the reset groove 303 are both provided with the reset spring 304, one side of the reset spring 304 is both provided with the reset blocks 305, the reset blocks 305 are arranged in the reset groove 303 in two groups, and the reset blocks 305 are symmetrically distributed about the vertical center line of the fixed pin 302;

when the structure is used, the first worm-shaped shell 1 is moved to one end of the second worm-shaped shell 8, so that the fixing pin 302 is moved into the reset groove 303, the first worm-shaped shell 1 is pushed, the fixing pin 302 can be moved between the reset blocks 305, the reset blocks 305 can be moved into the reset groove 303 under the action of the elastic force of the reset spring 304 and are mutually clamped with the fixing pin 302, the first worm-shaped shell 1 and the second worm-shaped shell 8 are mutually fixed, the function of facilitating maintenance of the device is realized, and the convenience of the centrifugal fan for the respirator in use is improved;

an air outlet 5 is formed in the top end of one side of the first worm-shaped shell 1, a noise reduction structure 6 is arranged at the top end of the air outlet 5, the noise reduction structure 6 comprises a clamping shell 601, a telescopic spring 602, a limiting block 603 and a noise reduction net 604, the clamping shell 601 is arranged at the top of the air outlet 5, the noise reduction net 604 is arranged at the top of the clamping shell 601, the telescopic springs 602 are arranged on the inner walls of the clamping shell 601, the limiting blocks 603 are fixed on one sides of the telescopic springs 602, the limiting blocks 603 are arranged in a plurality, and the limiting blocks 603 are annularly distributed on the inner walls of the clamping shell 601;

when the structure is used, the clamping shell 601 is moved to the top end of the air outlet 5, the limiting block 603 is pushed by means of external force according to the size of the air outlet 5, the telescopic spring 602 contracts inwards under the action of external force, then the clamping shell 601 is sleeved outside the air outlet 5, the limiting block 603 is released, the limiting block 603 is clamped with the outside of the top end of the air outlet 5 under the action of the elastic force of the telescopic spring 602, the noise reduction function of the device is facilitated under the noise reduction function of the noise reduction net 604, and therefore the applicability of the centrifugal fan for the respirator is improved when the centrifugal fan is used; one end of the first worm-shaped shell 1 is provided with a second worm-shaped shell 8, and one end of the second worm-shaped shell 8 is provided with a driving motor 7.

The working principle is as follows: the utility model discloses when using, this centrifugal fan external power supply when using, at first, move first worm type shell 1 to the one end of second worm type shell 8, make fixed pin 302 move to the inside of reset groove 303, promote first worm type shell 1, fixed pin 302 can move to between the reset block 305, under the spring action of reset spring 304, reset block 305 can move to the inside of reset groove 303 and mutual joint of fixed pin 302, make first worm type shell 1 and second worm type shell 8 reciprocal anchorage, when centrifugal fan damaged, can stimulate first worm type shell 1, make fixed pin 302 take out from reset block 305, easy to overhaul;

then, the fixture block 402 is matched with the clamping groove 401 by adjusting the position of the filter screen 403, the filter screen 403 is pushed, and the fixture block 402 slides in the clamping groove 401, so that the filter screen 403 and the vent 2 are fixed with each other, and under the filtering action of the filter screen 403, excessive dust is prevented from entering the centrifugal fan, so that the practicability of the centrifugal fan is influenced, and the centrifugal fan is not convenient to clean;

finally, the clamping shell 601 is moved to the top end of the air outlet 5, according to the size of the air outlet 5, the limiting block 603 is pushed by means of external force, the extension spring 602 contracts inwards under the action of external force, the clamping shell 601 is sleeved outside the air outlet 5, the limiting block 603 is released, under the action of the elastic force of the extension spring 602, the limiting block 603 is clamped with the outside of the top end of the air outlet 5, under the noise reduction effect of the noise reduction net 604, after the driving motor 7 is started, the noise of the centrifugal fan in use is reduced, and finally, all work of the centrifugal fan is completed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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.

Claims

1. The utility model provides a centrifugal fan for breathing machine that noise reduction effect is good, includes first snail type shell (1), vent (2), air outlet (5), driving motor (7) and second snail type shell (8), its characterized in that: a vent (2) is fixed at one end of the first worm-shaped shell (1), a dustproof structure (4) is arranged inside one end of the vent (2), a dismounting structure (3) is arranged at the bottom and the top of the first worm-shaped shell (1), an air outlet (5) is arranged at the top end of one side of the first worm-shaped shell (1), a noise reduction structure (6) is arranged at the top end of the air outlet (5), the noise reduction structure (6) comprises a clamping shell (601), a telescopic spring (602), a limiting block (603) and a noise reduction net (604), the clamping shell (601) is arranged at the top of the air outlet (5), the noise reduction net (604) is arranged at the top of the clamping shell (601), the telescopic spring (602) is arranged on the inner wall of the clamping shell (601), the limiting block (603) is fixed at one side of the telescopic spring (602), a second worm-shaped shell (8) is arranged at one end of the first worm-shaped shell (1), and a driving motor (7) is arranged at one end of the second worm-shaped shell (8).

2. The centrifugal fan for the breathing machine with good noise reduction effect according to claim 1, is characterized in that: dismantle structure (3) and include fixed block (301), fixed pin (302), reset groove (303), reset spring (304) and reset block (305), fixed block (301) all set up the top and the bottom in first worm-shaped shell (1), the one end of fixed block (301) is fixed with fixed pin (302), fixed pin (302) one end second worm-shaped shell (8) top all is provided with reset groove (303) with the inside of bottom, the inside both sides in reset groove (303) all are provided with reset spring (304), one side of reset spring (304) all is provided with reset block (305).

3. The centrifugal fan for the breathing machine with good noise reduction effect according to claim 2, characterized in that: the reset blocks (305) are arranged in two groups in the reset groove (303), and the reset blocks (305) are symmetrically distributed around the vertical center line of the fixing pin (302).

4. The centrifugal fan for the breathing machine with good noise reduction effect according to claim 1, is characterized in that: dustproof construction (4) include draw-in groove (401), fixture block (402) and filter screen (403), filter screen (403) set up the inside in vent (2) one end, the outside of filter screen (403) all is provided with fixture block (402), the inside of fixture block (402) one side vent (2) all is provided with draw-in groove (401).

5. The centrifugal fan for the breathing machine with good noise reduction effect according to claim 4, is characterized in that: the cross section of the clamping block (402) is smaller than that of the clamping groove (401), and the clamping block (402) and the clamping groove (401) form a clamping structure.

6. The centrifugal fan for the breathing machine with good noise reduction effect according to claim 1, is characterized in that: the limiting blocks (603) are arranged in a plurality of annular distribution on the inner wall of the clamping shell (601).