CN218151493U

CN218151493U - Centrifugal fan with booster-type structure

Info

Publication number: CN218151493U
Application number: CN202222183223.9U
Authority: CN
Inventors: 沈文斌; 张青
Original assignee: Shanghai De Hui Specific Fan Co ltd
Current assignee: Shanghai De Hui Specific Fan Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-12-27
Anticipated expiration: 2032-08-18

Abstract

The utility model relates to the field of fans, and discloses a centrifugal fan with a booster-type structure, which comprises a base, wherein two fixed plates are fixedly arranged on two sides in the base, a protective shell and a volute are respectively fixedly arranged on the two fixed plates through reinforcing columns, a partition plate is fixedly arranged in the protective shell, a motor is fixedly arranged at the upper end of the partition plate, the output end of the motor is fixedly connected with a long shaft, and a first sound absorption layer is fixedly arranged on the inner wall of the volute; the spiral case is provided with the apron through the bolt in the one side of keeping away from the protective housing, the fixed second sound absorbing layer that is provided with of apron inner wall, the fixed air-supply line that is provided with in one side that the motor was kept away from to the apron, the fixed cover of one end outer wall that the major axis is close to the air-supply line is equipped with first blade. The utility model discloses in, the device can reduce the inside noise that sends when using, and it is reasonable to conveniently dismantle inside its simultaneously, has increased the device's practicality.

Description

Centrifugal fan with booster-type structure

Technical Field

The utility model relates to a fan field especially relates to a centrifugal fan with booster-type structure.

Background

Centrifugal fan is according to the principle that kinetic energy converts potential energy into, utilize the impeller of high-speed rotation to accelerate gas, then slow down, change the flow direction, make kinetic energy convert potential energy, in single-stage centrifugal fan, gas gets into the impeller from the axial, gas changes into radially when flowing through the impeller, then gets into the diffuser, in the diffuser, gas has changed the flow direction and the increase of pipeline cross section area makes the air current slow down, this kind of deceleration action converts kinetic energy into pressure energy, pressure increases mainly takes place in the impeller, secondly take place at the diffusion process, in multistage centrifugal fan, make the air current get into next impeller with the backward flow ware, produce higher pressure, current device is inconvenient to be dismantled and can not the noise reduction, lead to the inconvenient washing of device, the noise is too big during the use, the practicality is not high.

Through retrieval, the prior patent (publication number: CN 208619414U) discloses a booster centrifugal fan, which improves the work efficiency of the centrifugal fan, further raises the pressure at the air outlet, and improves the performance of the centrifugal fan and the smoke exhaust capacity of the range hood, but has the problems of inconvenient disassembly and incapability of reducing noise, thereby causing the device to be inconvenient to clean and too loud in noise during use, and therefore, technical personnel in the field provide a centrifugal fan with a booster structure to solve the problems in the background art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the centrifugal fan with booster-type structure that proposes, the device can reduce the inside noise that sends when using, and convenient the dismantlement is reasonable to its inside simultaneously, has increased the device's practicality.

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

a centrifugal fan with a booster-type structure comprises a base, wherein two fixing plates are fixedly arranged on two sides in the base, a protective shell and a volute are fixedly arranged on the two fixing plates respectively through reinforcing columns, a partition plate is fixedly arranged in the protective shell, a motor is fixedly arranged at the upper end of the partition plate, the output end of the motor is fixedly connected with a long shaft, and a first sound absorption layer is fixedly arranged on the inner wall of the volute;

a cover plate is arranged on one side, away from the protective shell, of the volute through a bolt, a second sound absorption layer is fixedly arranged on the inner wall of the cover plate, an air inlet pipe is fixedly arranged on one side, away from the motor, of the cover plate, and a first blade is fixedly sleeved on the outer wall of one end, close to the air inlet pipe, of the long shaft;

through the technical scheme, through the use of motor, drive the major axis and rotate, the major axis is rotating the inside rotation of seat, drive first blade and second blade, it flows to get into the wind through the air-supply line, first blade carries out pressure boost for the first time, flow into to the device inside, carrying out the pressure boost once more through the second blade, discharge from the air exit at last, the cotton noise that sends when can reduce the device use of first amortization and second amortization, dismantle the apron through the bolt, dismantle the second blade, can clear up the spiral case.

Further, the long shaft penetrates through the volute and extends into the air inlet pipe;

through above-mentioned technical scheme, drive first blade and second blade through the major axis and rotate.

Further, a first sound-absorbing cotton is clamped between the volute and the first sound-absorbing layer;

through above-mentioned technical scheme, carry out the amortization through first amortization cotton.

Further, an air outlet is formed in the upper end of the volute;

through above-mentioned technical scheme, air exhaust is carried out through the air exit.

Furthermore, second silencing cotton is clamped between the cover plate and the second sound absorption layer;

through above-mentioned technical scheme, carry out the amortization through the second amortization cotton.

Furthermore, a rotating seat is fixedly arranged in the air inlet pipe through three fixing columns;

through above-mentioned technical scheme, will rotate the seat through the fixed column and give fixedly.

Furthermore, a second blade is fixedly sleeved on the outer side wall of the long shaft and positioned in the volute;

through the technical scheme, the second blade is driven to rotate through the long shaft.

Further, one end of the long shaft, which is far away from the motor, rotates inside the rotating seat;

through above-mentioned technical scheme, make the major axis can normally rotate through rotating the seat.

The utility model discloses following beneficial effect has:

1. the utility model provides a centrifugal fan with booster-type structure, the device can carry out the pressure boost to the device through the first blade that sets up, the second blade, motor and pivot, use through the motor, it rotates to drive the major axis, the major axis is rotating the inside rotation of seat, drive first blade and second blade, get into the distinguished and admirable through the air-supply line, first blade pressure boost is first, flow into to the device inside, carry out the pressure boost once more through the second blade, discharge from the air exit at last, make the device's pressure boost effect better, increase its practicality.

2. The utility model provides a pair of centrifugal fan with booster-type structure, the device can dismantle the device through spiral case, apron and the bolt that sets up, clears up the inside, will lap through the bolt and dismantle, dismantle the second blade, clear up the spiral case, solved the problem that the fan blockked up.

3. The utility model provides a pair of centrifugal fan with booster-type structure, the device is through the simple and easy amortization layer of the cotton and second sound absorption layer equipment of the first amortization that sets up, first sound absorption layer, second amortization, and when the device used, this sound insulation layer can reduce the noise emission when the device moves, further strengthens the device's practicality.

Drawings

Fig. 1 is a perspective view of a centrifugal fan with a booster structure according to the present invention;

fig. 2 is a rear sectional view of a centrifugal fan with a booster structure according to the present invention;

fig. 3 is a side view of a centrifugal fan with a booster structure according to the present invention;

fig. 4 is a side sectional view of a centrifugal fan with a supercharged structure according to the present invention.

Illustration of the drawings:

1. a base; 2. a fixing plate; 3. reinforcing columns; 4. a protective shell; 5. a volute; 6. a partition plate; 7. an electric motor; 8. a long axis; 9. first noise reduction cotton; 10. a first sound absorbing layer; 11. an air outlet; 12. a bolt; 13. a cover plate; 14. second silencing cotton; 15. a second sound absorbing layer; 16. an air inlet pipe; 17. fixing the column; 18. a rotating seat; 19. a first blade; 20. a second blade.

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 with a booster-type structure comprises a base 1, wherein two fixing plates 2 are fixedly arranged on two sides in the base 1, a protective shell 4 and a volute 5 are respectively and fixedly arranged on the two fixing plates 2 through reinforcing columns 3, a partition plate 6 is fixedly arranged in the protective shell 4, an electric motor 7 is fixedly arranged at the upper end of the partition plate 6, a long shaft 8 is fixedly connected to the output end of the electric motor 7, and a first sound absorption layer 10 is fixedly arranged on the inner wall of the volute 5;

a cover plate 13 is arranged on one side of the volute 5, which is far away from the protective shell 4, through a bolt 12, a second sound absorption layer 15 is fixedly arranged on the inner wall of the cover plate 13, an air inlet pipe 16 is fixedly arranged on one side of the cover plate 13, which is far away from the motor 7, and a first blade 19 is fixedly sleeved on the outer wall of one end of the long shaft 8, which is close to the air inlet pipe 16;

through the technical scheme, the long shaft 8 is driven to rotate by using the motor 7, the long shaft 8 rotates inside the rotating seat 18 to drive the first blade 19 and the second blade 20, air flow enters through the air inlet pipe 16, the first blade 19 is pressurized for the first time and flows into the device, the second blade 20 is pressurized again, and finally the air is discharged from the air outlet 11, the first silencing cotton 9 and the second silencing cotton 14 can reduce noise generated when the device is used, the cover plate 13 is detached through the bolt 12, the second blade 20 is detached, and the volute 5 can be cleaned.

The long shaft 8 penetrates through the volute 5 and extends into the air inlet pipe 16, the long shaft 8 drives the first blade 19 and the second blade 20 to rotate, first silencing cotton 9 is clamped between the volute 5 and the first sound absorption layer 10, silencing is carried out through the first silencing cotton 9, the upper end of the volute 5 is provided with an air outlet 11, air is exhausted through the air outlet 11, second silencing cotton 14 is clamped between the cover plate 13 and the second sound absorption layer 15, silencing is carried out through the second silencing cotton 14, the rotating seat 18 is fixedly arranged inside the air inlet pipe 16 through three fixing columns 17, the rotating seat 18 is fixed through the fixing columns 17, the second blade 20 is fixedly sleeved on the outer side wall of the long shaft 8 and located inside the volute 5, the long shaft 8 drives the second blade 20 to rotate through the long shaft 8, one end, far away from the motor 7, of the long shaft 8 rotates inside the rotating seat 18, and the long shaft 8 can normally rotate through the rotating seat 18.

The working principle is as follows: when the centrifugal fan with the booster-type structure is used, the motor 7 is used for driving the long shaft 8 to rotate, the long shaft 8 rotates inside the rotating seat 18 and drives the first blade 19 and the second blade 20 to enter air flow through the air inlet pipe 16, the first blade 19 is pressurized for the first time and flows into the device, the second blade 20 is pressurized again and is finally discharged from the air outlet 11, the first silencing cotton 9 and the second silencing cotton 14 can reduce noise generated when the centrifugal fan is used, the cover plate 13 is detached through the bolt 12, the second blade 20 is detached, and the volute 5 can be cleaned.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A centrifugal fan with a supercharged structure comprises a base (1), and is characterized in that: two fixing plates (2) are fixedly arranged on two sides in the base (1), a protective shell (4) and a volute (5) are respectively fixedly arranged on the two fixing plates (2) through reinforcing columns (3), a partition plate (6) is fixedly arranged in the protective shell (4), a motor (7) is fixedly arranged at the upper end of the partition plate (6), a long shaft (8) is fixedly connected to the output end of the motor (7), and a first sound absorption layer (10) is fixedly arranged on the inner wall of the volute (5);

one side of the protective housing (4) is kept away from in spiral case (5) is provided with apron (13) through bolt (12), apron (13) inner wall is fixed and is provided with second sound absorbing layer (15), one side of motor (7) is kept away from in apron (13) is fixed and is provided with air-supply line (16), the fixed cover of one end outer wall that major axis (8) is close to air-supply line (16) is equipped with first blade (19).

2. The centrifugal fan with a supercharged structure according to claim 1, characterized in that: the long shaft (8) penetrates through the volute (5) and extends into the air inlet pipe (16).

3. The centrifugal fan with a supercharged structure according to claim 1, characterized in that: and a first silencing cotton (9) is clamped between the volute (5) and the first sound absorption layer (10).

4. The centrifugal fan with a supercharged structure according to claim 1, characterized in that: an air outlet (11) is formed in the upper end of the volute (5).

5. The centrifugal fan with a supercharged structure as claimed in claim 1, wherein: and a second silencing cotton (14) is clamped between the cover plate (13) and the second sound absorption layer (15).

6. The centrifugal fan with a supercharged structure according to claim 1, characterized in that: the air inlet pipe (16) is internally and fixedly provided with a rotating seat (18) through three fixing columns (17).

7. The centrifugal fan with a supercharged structure according to claim 1, characterized in that: and a second blade (20) is fixedly sleeved on the outer side wall of the long shaft (8) and positioned in the volute (5).

8. The centrifugal fan with a supercharged structure according to claim 1, characterized in that: one end of the long shaft (8) far away from the motor (7) rotates in the rotating seat (18).