CN210889382U - Centrifugal fan convenient to assembly - Google Patents

Abstract

The utility model discloses a centrifugal fan convenient for assembly, which comprises a motor, a fixed frame, a shell, an impeller arranged in the shell and a connecting mechanism for connecting the motor and the fixed frame, wherein the connecting mechanism comprises a fixed plate arranged on the fixed frame, a support plate symmetrically arranged on the motor, a sliding plate provided with a sliding chute, an inserted link arranged on the sliding plate, a locking device and a positioning device, the support plate is provided with a slot matched with the inserted link, the sliding chute can be inserted by the support plate, and the sliding plate is fixedly connected on the fixed plate; when the motor is installed, the supporting plate of the motor is aligned to the sliding groove, the inserting rod is inserted into the slot, the installation of the motor can be fixed, the installation is convenient, and when the motor is detached, the inserting rod is pulled out from the slot, so that the motor can be pulled out from the sliding plate, and the motor is convenient to detach.

Description

Centrifugal fan convenient to assembly

Technical Field

The utility model belongs to the technical field of the fan, especially, relate to a centrifugal fan convenient to assembly.

Background

The centrifugal fan is based on the principle that kinetic energy is converted into potential energy, and utilizes a blade fan rotating at high speed to accelerate, then decelerate and change the flow direction, so that the kinetic energy is converted into the potential energy (pressure). In a single stage centrifugal fan, the gas enters the impeller from an axial direction, changes to a radial direction as it flows through the impeller, and then enters the diffuser. In diffusers, the gas changes flow direction and the increase in conduit cross-sectional area slows the gas flow, which converts kinetic energy into pressure energy. The pressure increase occurs primarily in the impeller and secondarily in the diffusion process. In a multistage centrifugal fan, a flow reverser is used to direct the air flow to the next impeller, creating a higher pressure.

When the centrifugal fan is assembled and installed, the motor needs to be fixed on the fixing frame. The existing motor is generally fixed on a fixed frame by welding or screws, and the motor is very inconvenient to mount and dismount.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art not enough, provide a centrifugal fan convenient to assembly.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a centrifugal fan convenient to assemble comprises a motor, a fixing frame, a shell, an impeller arranged in the shell and a connecting mechanism for connecting the motor and the fixing frame, wherein the connecting mechanism comprises a fixing plate arranged on the fixing frame, a supporting plate symmetrically arranged on the motor, a sliding plate provided with a sliding chute, an inserting rod arranged on the sliding plate, a locking device and a positioning device; when the motor is installed, the supporting plate of the motor is aligned to the sliding groove, the inserting rod is inserted into the slot, the installation of the motor can be fixed, the installation is convenient, and when the motor is detached, the inserting rod is pulled out from the slot, so that the motor can be pulled out from the sliding plate, and the motor is convenient to detach.

Preferably, the locking device comprises an installation cavity arranged in the inserted link, a connecting plate symmetrically arranged in the installation, a clamping block arranged on the connecting plate, a clamping groove arranged in the sliding plate and a control component for controlling the movement of the clamping block. The inserted bar is provided with an opening for the fixture block to extend out; when the fixed mounting motor, insert the draw-in groove with the inserted bar lower extreme earlier in, then enter into the draw-in groove with two fixture blocks in order to reacing the installation cavity, can die the inserted bar card in the draw-in groove to deviate from in the inserted bar follow slot, guarantee the fixed stability of motor.

Preferably, the control assembly comprises a sliding rod arranged in the mounting cavity, a first elastic part sleeved on the sliding rod, a control panel and an auxiliary part, two ends of the first elastic part are respectively fixed on a connecting plate, the connecting plate is provided with a round hole for the sliding rod to pass through, one end of the control panel is fixedly connected to the connecting plate, and the other end of the control panel extends out of the mounting cavity; when the lower end of the inserted bar enters the clamping groove, the first elastic piece pushes the two sides of the connecting phase to move, so that the clamping block is pushed to move into the clamping groove, and the locking of the inserted bar is completed.

Preferably, the auxiliary component comprises a baffle plate arranged on the inserted link and a second elastic member sleeved on the inserted link, wherein one end of the second elastic member is fixedly connected to the baffle plate, and the other end of the second elastic member is fixedly connected to the sliding plate; the second elastic piece is arranged, so that the lower end of the inserted bar does not enter the sliding groove under the condition of no external force, and the support plate can be inserted conveniently; when the motor is disassembled, the pressing control plate drives the clamping block to retract into the mounting cavity, and the second elastic piece automatically pushes the inserting rod to be separated from the slot.

Preferably, the fixture block is provided with an inclined surface; the fixture block sets up the inclined plane, presses down the inserted bar slot lateral wall and will extrude the fixture block automatically and enter into the installation intracavity, then when fixed motor, only needs to press down the inserted bar and can accomplish the locking to the inserted bar, need not to press the control panel.

Preferably, the upper end of the inserted link is provided with a rubber pad, and the rubber pad is provided with a spherical bulge; the pressing comfort is improved.

Preferably, the positioning device comprises a limiting plate and a buffering assembly which are arranged in the sliding chute; the inserted bar is convenient to align with the slot.

Preferably, the buffering component comprises a mounting hole arranged in the limiting plate, a buffering rod arranged in the mounting hole and a third elastic member arranged in the mounting hole, wherein one end of the third elastic member is fixedly connected to the bottom of the mounting hole, and the other end of the third elastic member is fixedly connected to the buffering rod; the supporting plate is prevented from directly impacting the limiting plate, and the impact force of the supporting plate is reduced.

Preferably, the fixing frame is provided with a plurality of fixing holes; the fixing frame is convenient to install and fix.

To sum up, when the motor is installed, the supporting plate of the motor is aligned with the sliding groove and inserted to enable the insertion rod to be aligned with the slot, then the insertion rod is inserted into the slot, the installation and the fixation of the motor can be completed, the installation is convenient, and when the motor is disassembled, the insertion rod is pulled out from the slot, the motor can be pulled out from the sliding plate, and the motor is convenient to disassemble.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is an enlarged view of fig. 2 at a.

Detailed Description

As shown in fig. 1-3, a centrifugal fan convenient to assemble includes a motor 1, a fixing frame 2, a housing 3, an impeller and a connecting mechanism, wherein the fixing frame 2 is a conventional metal steel frame for fixing the motor and the housing, and a fixing hole 21 is formed at the bottom of the fixing frame for inserting a screw, so that the fixing frame is convenient to fix and install; the motor 1 is a conventional motor and is detachably fixed on the fixed frame through a connecting mechanism; the impeller is a conventional centrifugal impeller and is connected with an output shaft of the motor through a shaft; the shell 3 covers the impeller, and the top of the shell is provided with an air outlet.

Specifically, the connecting mechanism comprises a fixing plate 4, a supporting plate 41, a sliding plate 42, an inserting rod 43, an inserting groove 44, a locking device and a positioning device, wherein the fixing plate 4 is fixed on the fixing frame and used for supporting the motor; the supporting plates 41 are symmetrically fixed on two sides of the bottom of the motor; the sliding plates 42 are symmetrically fixed on the top surface of the fixed plate, and the sliding plates are provided with sliding grooves 421 for the insertion of the supporting plate; the inserted bar 43 is arranged on the sliding plate in a penetrating way and can slide up and down relative to the sliding plate; the slot 44 is formed in the supporting plate 41 and can be used for inserting the inserted rod, when the motor is installed, the supporting plate of the motor is aligned with the sliding groove to be inserted, so that the inserted rod is aligned with the slot, then the inserted rod is inserted into the slot, installation and fixation of the motor can be achieved, installation is convenient, when the motor is detached, the inserted rod is pulled out of the slot, the motor can be pulled out of the sliding plate, and the motor is convenient to detach.

Preferably, the locking device comprises a mounting cavity 5, a connecting plate 51, a clamping block 52, a clamping groove 53, a sliding rod 54, a first elastic element 55, a control plate 56, a baffle 57, a second elastic element 58 and a rubber pad 59, wherein the mounting cavity 5 is arranged in the inserted link; the connecting plates 51 are symmetrically arranged in the mounting cavity; the fixture block 52 is fixed at the lower end of the connecting plate, the fixture block is provided with an inclined plane, and the lower end of the inserted rod is provided with an opening for the fixture block to extend out; the clamping groove 53 is formed in the sliding plate; two sliding rods 54 are preferably selected, two ends of each sliding rod are respectively fixed on the inner wall of the installation cavity, and a circular hole for the sliding rod to penetrate through is formed in the connecting plate; the first elastic piece 55 is a spring, which is sleeved on the sliding rod, and two ends of the first elastic piece are respectively fixed on the connecting plate; one end of the control plate 56 is fixed at the upper end of the connecting plate, and the other end of the control plate extends out of the inserted link; the baffle 57 is fixed on the inserted link; the second elastic piece 58 is a spring, the spring is sleeved on the inserted link, the upper end of the spring is fixed on the baffle plate, the lower end of the spring is fixed on the sliding plate, when the motor is fixedly installed, the supporting plate of the motor is aligned with the sliding groove to be inserted so that the inserted link is aligned with the slot, the inserted link is pressed downwards, the side wall of the slot automatically extrudes the fixture block to enter the installation cavity, and when the lower end of the inserted link enters the slot, the first elastic piece pushes the two sides of the connecting phase to move so as to push the fixture block to move into the slot, and the locking of the inserted link is; when the motor is disassembled, the pressing control plate drives the clamping block to retract into the mounting cavity, and the second elastic piece automatically pushes the inserted rod to be separated from the slot; the rubber pad 59 is fixed on the upper end of the inserted link, and the surface of the rubber pad is provided with a bulge, so that the pressing comfort level is improved.

Preferably, the positioning device comprises a limiting plate 6, a mounting hole 61, a buffer rod 62 and a third elastic member 63, and the limiting plate 6 is fixed in the chute; the mounting hole 61 is formed in the limiting plate; the buffer rod 62 is arranged in the mounting hole and can slide relative to the mounting hole; the third elastic piece 63 is a spring, one end of the spring is fixed to the bottom of the mounting hole, and the other end of the spring is fixed to the end of the buffer rod, so that the support plate is prevented from directly impacting the limiting plate, and the impact force of the support plate is reduced.

Claims (9)

1. The utility model provides a centrifugal fan convenient to assembly, includes motor (1), mount (2), casing (3), locates impeller in the casing and connection the coupling mechanism of motor and mount, its characterized in that: coupling mechanism is including locating fixed plate (4), symmetry on mount (2) are located backup pad (41), slide (42) that are equipped with spout (421) on motor (1), locate inserted bar (43), locking device and positioner on slide (42), spout (421) can supply backup pad (41) to insert, backup pad (41) be equipped with inserted bar complex slot (44), the slide links firmly on the fixed plate.

2. The centrifugal fan of claim 1, wherein: the locking device comprises a mounting cavity (5) arranged in the inserted rod (43), a connecting plate (51) symmetrically arranged in the mounting cavity (5), a clamping block (52) arranged on the connecting plate (51), a clamping groove (53) arranged in the sliding plate and a control component for controlling the clamping block to move, wherein the inserted rod is provided with an opening for the clamping block to extend out.

3. The centrifugal fan of claim 2, wherein: the control assembly is including locating slide bar (54), the cover in the installation cavity are located first elastic component (55), control panel (56) and auxiliary component on slide bar (54), first elastic component (55) both ends are fixed respectively on connecting plate (51), connecting plate (51) are equipped with the round hole that supplies the slide bar to pass, control panel one end links firmly on the connecting plate, and the other end stretches out outside the installation cavity.

4. A centrifugal fan convenient to assemble according to claim 3, wherein: the auxiliary component comprises a baffle (57) arranged on the inserted bar (43) and a second elastic piece (58) sleeved on the inserted bar (43), one end of the second elastic piece is fixedly connected to the baffle, and the other end of the second elastic piece is fixedly connected to the sliding plate.

5. The centrifugal fan of claim 2, wherein: the fixture block (52) is provided with an inclined surface.

6. The centrifugal fan of claim 1, wherein: the upper end of the inserted bar (43) is provided with a rubber pad (59) which is provided with a spherical bulge.

7. The centrifugal fan of claim 1, wherein: the positioning device comprises a limiting plate (6) and a buffer assembly which are arranged in the sliding groove (421).

8. The centrifugal fan of claim 7, wherein: the buffer assembly comprises a mounting hole (61) arranged in the limiting plate (6), a buffer rod (62) arranged in the mounting hole (61) and a third elastic piece (63) arranged in the mounting hole, one end of the third elastic piece (63) is fixedly connected to the bottom of the mounting hole, and the other end of the third elastic piece is fixedly connected to the buffer rod.

9. The centrifugal fan of claim 1, wherein: the fixing frame (2) is provided with a plurality of fixing holes (21).

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