CN217761388U

CN217761388U - Impeller structure and centrifugal fan comprising same

Info

Publication number: CN217761388U
Application number: CN202221852776.2U
Authority: CN
Inventors: 王伟; 王勇
Original assignee: Shenzhen Yongyihao Electronic Co ltd
Current assignee: Shenzhen Yongyihao Electronic Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-11-08
Anticipated expiration: 2032-07-18

Abstract

The utility model belongs to the technical field of the ventilation equipment technique and specifically relates to a centrifugal fan who relates to an impeller structure and include this impeller structure, and it includes the bottom plate and fixes a plurality of blades that set up on the bottom plate, and one side that the bottom plate was kept away from to a plurality of blades is fixed to be provided with first annular aviation baffle, and a side surface that first annular aviation baffle is close to the blade is the wind-guiding face, and the wind-guiding face becomes cambered surface transition setting to the opening orientation of wind-guiding face is close to the direction at bottom plate center. The flow of the spiral case is radially beaten to gaseous in the reducible centrifugal fan of this application, is favorable to gaseous collection to reduce centrifugal fan's energy loss, and reduced the noise when the impeller structure rotates, improved and used the experience and felt.

Description

Impeller structure and centrifugal fan comprising same

Technical Field

The application relates to the technical field of ventilation equipment, in particular to an impeller structure and a centrifugal fan comprising the same.

Background

Centrifugal fans, which are machines that increase the pressure of gas and deliver the gas by means of mechanical energy input, are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and in cooling and ventilation of household appliances such as air conditioning equipment.

In the related art, a centrifugal fan is a machine which increases gas pressure and discharges gas by means of input mechanical energy, and is a driven fluid machine, an impeller is an important part of the centrifugal fan, and the impeller can be matched with an external sleeve to suck gas. The working principle of the centrifugal fan is that under the action of centrifugal force, gas is sucked from the central part of the impeller along the axial direction, then flows between the blades and is gradually changed into radial flow near the rear disc.

With respect to the related art among the above, there are the following drawbacks: after the centrifugal fan sucks gas from the central part of the impeller, the gas radially hits the volute, so that the gas is not favorably collected, and larger energy loss can be generated.

SUMMERY OF THE UTILITY MODEL

In order to reduce the energy loss that centrifugal fan produced, this application provides an impeller structure and includes this impeller structure's centrifugal fan.

In a first aspect, the present application provides an impeller structure, which adopts the following technical scheme:

the impeller structure comprises a bottom plate and a plurality of blades fixedly arranged on the bottom plate, wherein a first annular air guide plate is fixedly arranged on one side, away from the bottom plate, of the plurality of blades, an air guide surface is arranged on the surface, close to the blades, of one side of the first annular air guide plate, the air guide surface is in arc surface transition arrangement, and the opening orientation of the air guide surface is close to the direction of the center of the bottom plate.

By adopting the technical scheme, under the action of centrifugal force, gas is sucked in from the central part of the impeller structure along the axial direction, and then flows through the plurality of blades; because the wind guide surface is the arc transition setting, and the opening direction of wind guide surface is towards the direction that is close to the bottom plate center, the gaseous flow direction of having changed of first annular aviation baffle has played the effect of direction for gaseous opening direction along the wind guide surface flows, and the reducible gaseous volume of radially beating to the spiral case is favorable to gaseous collection, thereby reduces centrifugal fan's energy loss, and has reduced the noise when the impeller structure rotates, has improved the use and has experienced the sense.

Optionally, a wind blocking ring is arranged on one side, away from the blades, of the first annular wind deflector, a wind inlet is formed in one side, away from the blades, of the first annular wind deflector, and the wind blocking ring is used for being matched with an external sleeve to reduce loss of gas flowing through a plurality of blades from the wind inlet.

By adopting the technical scheme, the air inlet is positioned on one side of the first annular air deflector, which is far away from the blades, the wind shield ring and the air inlet are positioned on the same side, when the impeller structure is used, the impeller structure is installed in the centrifugal fan, and the external sleeve is sleeved on the outer side of the wind shield ring in a matching manner.

When the impeller structure rotates, gas is sucked from the air inlet, and due to the existence of the wind blocking ring, the gas is guided by the wind blocking ring when entering. The wind-blocking ring can better seal a gap between the external sleeve and the first annular air deflector, so that the condition that gas directly hits the first annular air deflector is reduced, and the wind loss of the gas flowing through a plurality of blades from the wind inlet is reduced.

Optionally, the plurality of blades are vertically arranged on the bottom plate.

Through adopting above-mentioned technical scheme, can set up more blades on the bottom plate to practice thrift the distribution space of blade, when impeller structure is rotating, more blade cooperation rotations can provide bigger induced draft volume.

Optionally, a plurality of the blades are uniformly arranged along the circumferential direction of the bottom plate at intervals, and the number of the blades is eleven.

Through adopting above-mentioned technical scheme, the blade sets up along bottom plate circumference even interval, and the blade has set up eleven, under this number for can provide bigger pressure when impeller structure rotates, can improve impeller structure's suction.

Optionally, a containing groove is formed in one side, away from the blades, of the bottom plate, and the containing groove is used for containing the motor.

Through adopting above-mentioned technical scheme for drive impeller structure pivoted motor can install in the storage tank, thereby has reduced the holistic volume of impeller structure.

Optionally, a second annular air deflector is arranged on the periphery of the bottom plate, the second annular air deflector is arranged in a cambered surface transition manner, and an opening of the second annular air deflector faces a direction away from the blade.

Through adopting above-mentioned technical scheme, increase the second annular aviation baffle, and the second annular aviation baffle is the cambered surface setting, can play the effect of water conservancy diversion, makes the gas that enters into between the blade more steadily thrown away, noise when also can reducing the impeller structure and rotate.

Moreover, the contact area between the blade and the second annular air deflector is increased, so that the blade and the second annular air deflector can be fixed more firmly, and the stability of the blade in the rotation of the impeller structure is enhanced; the area of each blade can be further increased, and the effect of improving wind power is achieved.

Optionally, the arc surfaces of the second annular air deflector and the first annular air deflector are arranged at the same angle.

By adopting the technical scheme, when the angle of the cambered surface of the second annular air deflector is consistent with that of the first annular air deflector, the flow direction of gas entering between the blades can be more stable, the direction of the gas is kept consistent when the gas is thrown out, and the turbulent flow and the wind power loss are reduced.

In a second aspect, the present application provides a centrifugal fan, which adopts the following technical scheme:

a centrifugal fan comprises the impeller structure.

Through adopting above-mentioned technical scheme, the centrifugal fan who has used above-mentioned impeller structure possesses the less beneficial effect such as low noise of energy loss.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the first annular air deflector is arranged, so that the flow direction of gas is changed, a guiding effect is achieved, the gas flows out from the opening direction along the air guide surface, the amount of the gas which radially hits the volute can be reduced, the gas collection is facilitated, the noise generated when the impeller structure rotates is reduced, and the energy loss of the centrifugal fan is reduced;

2. by arranging the wind-blocking ring, the gas is guided by the wind-blocking ring when entering, the wind-blocking ring can better seal the gap between the external sleeve and the first annular air deflector, and the condition that the gas directly hits the first annular air deflector is reduced, so that the loss of wind power is reduced;

3. the blades are vertically arranged on the bottom plate, more blades can be arranged on the bottom plate, the distribution space of the blades is saved, and when the impeller structure rotates, more blades rotate in a matched mode to provide larger air suction volume.

Drawings

Fig. 1 is a schematic structural view of an impeller structure according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of the whole impeller structure of the embodiment of the present application.

Fig. 3 is a partial sectional view of an impeller structure of the embodiment of the present application.

Description of reference numerals: 1. a base plate; 11. a containing groove; 2. a blade; 3. a first annular air deflector; 31. a wind guide surface; 32. an air inlet; 4. a wind-shield ring; 5. and the second annular air deflector.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses an impeller structure.

Referring to fig. 1 and 2, the impeller structure includes a bottom plate 1, a plurality of blades 2 are integrally formed on the bottom plate 1, and a first annular air deflector 3 is integrally formed on one side of the plurality of blades 2 away from the bottom plate 1. The surface of the first annular air guiding plate 3 near the blade 2 is an air guiding surface 31 with a cambered transitional shape, and the opening of the air guiding surface 31 faces the direction near the center of the bottom plate 1.

Referring to fig. 2, when the impeller structure rotates, gas is sucked in from the central portion of the impeller structure along the axial direction under the action of centrifugal force, and then flows among the plurality of blades 2; because the surface of one side of the first annular wind deflector 3 close to the blade 2 is in a cambered transition shape, the guiding effect is achieved in the gas flowing process, and gas flows out along the opening direction of the wind guide surface 31 under the effect of the first annular wind deflector 3.

Because the flow direction of the gas is changed by the first annular air deflector 3, the amount of the gas which is originally and radially impacted on the volute is reduced, the gas collection is facilitated, and the energy loss of the centrifugal fan can be reduced; and the noise of the impeller structure is reduced when the impeller structure rotates, and the use experience of a user can be improved.

Referring to fig. 1 and 2, in order to further reduce the loss of wind power, an air inlet 32 is formed on one side of the first annular air deflector 3 away from the blade 2, and a wind blocking ring 4 is integrally formed on one side of the first annular air deflector 3 away from the blade 2, wherein the wind blocking ring 4 protrudes out of the first annular air deflector 3.

In the rotating process of the impeller structure, the wind blocking ring 4 is matched with the external sleeve, and the wind blocking ring 4 can better seal the gap between the external sleeve and the first annular air deflector 3. When the gas enters, the wind-blocking ring 4 plays a guiding role for the gas, so that the condition that the gas directly collides with the first annular wind deflector 3 is reduced, and the wind power loss of the gas flowing through the blades 2 from the wind inlet 32 can be reduced.

Referring to fig. 2 and 3, in order to provide more blades 2 on the base plate 1 and to make the space utilization of the blades 2 greater, a plurality of blades 2 are vertically provided on the base plate 1. In the present embodiment, the number of the blades 2 is eleven, and eleven blades 2 are arranged at regular intervals in the circumferential direction of the base plate 1. In the rotation process of impeller structure, eleven blades 2 rotate and can provide bigger pressure for impeller structure's suction obtains promoting, thereby improves convulsions efficiency.

In order to reduce the overall size of the impeller structure, a receiving groove 11 is integrally formed on a side of the bottom plate 1 away from the blades 2, and the receiving groove 11 is used for receiving a motor (not shown in the figure). In this embodiment, the motor is installed in the accommodating groove 11 and is used for driving the impeller structure, so that the size of the impeller structure can be reduced, and the space utilization rate of the centrifugal fan is improved.

Referring to fig. 1 and 2, in order to further reduce noise generated during rotation of the impeller structure and enable the gas sucked between the blades 2 to be more smoothly thrown out, a second annular air guiding plate 5 is integrally formed on the periphery of the bottom plate 1, the second annular air guiding plate 5 is in a transition arrangement in an arc surface, and an opening of the second annular air guiding plate 5 faces a direction away from the blades 2, so that the second annular air guiding plate can play a role in guiding when the gas flows in.

The cambered surface of second annular aviation baffle 5 sets up the noise when not only reducing impeller structure and rotating, still can increase blade 2 and second annular aviation baffle 5's area of contact for blade 2 connects more steadily on second annular aviation baffle 5, has promoted the stability of blade 2 rotation in-process, has increased the area of each blade 2, can promote wind-force.

In this embodiment, the angles of the cambered surfaces of the second annular air deflector 5 and the first annular air deflector 3 are the same, so that the flow direction of the gas sucked between the eleven blades 2 can be more stable, the direction of the gas when the gas is thrown out is kept consistent, and the loss of the turbulent flow to wind power can be reduced.

The implementation principle of an impeller structure of the embodiment of the application is as follows:

the impeller structure is matched with the external sleeve in an installing mode, the motor drives the impeller structure to rotate, gas is sucked in through the air inlet 32 under the action of centrifugal force generated by rotation of the blades 2, and the rotating blades 2 throw the gas out along the opening direction of the air guide surface 31.

The embodiment of the application also discloses a centrifugal fan, and the centrifugal fan applies the impeller structure disclosed in the embodiment.

The impeller structure disclosed in the embodiment is applied, so that the impeller structure has the advantages of small energy loss, low noise and the like.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An impeller structure characterized in that: the wind guide plate comprises a bottom plate (1) and a plurality of blades (2) fixedly arranged on the bottom plate (1), wherein a first annular wind guide plate (3) is fixedly arranged on one side, far away from the bottom plate (1), of each blade (2), one side surface, close to the blade (2), of each first annular wind guide plate (3) is a wind guide surface (31), the wind guide surfaces (31) are in cambered surface transition arrangement, and the opening orientation of the wind guide surfaces (31) is close to the direction of the center of the bottom plate (1).

2. An impeller structure according to claim 1, wherein: one side, far away from blade (2), of first annular aviation baffle (3) is provided with wind-break ring (4), one side, far away from blade (2), of first annular aviation baffle (3) sets up to into wind gap (32), wind-break ring (4) are used for reducing the loss of gas flow through between a plurality of blades (2) from going into wind gap (32) with the cooperation of external sleeve.

3. An impeller structure according to claim 1, wherein: a plurality of the blades (2) are vertically arranged on the bottom plate (1).

4. An impeller structure according to claim 3, wherein: a plurality of blades (2) are arranged along the circumferential direction of the bottom plate (1) at even intervals, and the number of the blades (2) is eleven.

5. An impeller structure according to claim 1, wherein: one side of the bottom plate (1) far away from the blades (2) is provided with a containing groove (11), and the containing groove (11) is used for containing a motor.

6. An impeller structure according to claim 1, wherein: the periphery of the bottom plate (1) is provided with a second annular air deflector (5), the second annular air deflector (5) is in cambered surface transition arrangement, and an opening of the second annular air deflector (5) faces a direction away from the blade (2).

7. An impeller structure according to claim 6, wherein: the cambered surface of the second annular air deflector (5) and the cambered surface of the first annular air deflector (3) are arranged at the same angle.

8. A centrifugal fan, its characterized in that: comprising an impeller structure according to any one of claims 1-7.