CN218407948U - Low-noise centrifugal fan - Google Patents

Abstract

The utility model discloses a low noise centrifugal fan, belong to centrifugal fan technical field, shake can take place when using with centrifugal fan among the solution prior art, make centrifugal fan drive the base and take place vibrations, thereby produce great noise, the vibrations of base still may lead to the bolt of centrifugal fan and base fixed department not hard up simultaneously, the technical problem who influences centrifugal fan's use, the on-line screen storage device comprises a base, the inside of base is equipped with the backup pad, the last fixed surface of backup pad installs motor and fan body, there are a plurality of sliding blocks inside bottom of base through spout sliding connection, the first attenuator of the equal fixedly connected with of outer wall of sliding block, the other end of first attenuator and the inside wall fixed connection of base, through first attenuator, first spring, second attenuator and second spring, the power that produces when can all cushions backup pad and vertical direction vibrations, further alleviateed the collision that the base drives supporting shoe and ground, can reduce vibrations noise reduction.

Description

Low-noise centrifugal fan

Technical Field

The utility model belongs to the technical field of centrifugal fan, more specifically says, in particular to low noise centrifugal fan.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

The contrast is published as CN 216430008U's prior art scheme, and it includes the bottom plate, bottom plate upper end position fixed mounting sets up the organism, bottom left side position fixed mounting is provided with the motor, bottom plate upper end position fixed mounting is provided with the sound-proof housing, the cavity has been seted up to the sound-proof housing internal position, the hole groove has been seted up to the sound-proof housing upper end position, hole groove central point position fixed mounting is provided with the rubber ring, organism upper end position fixed mounting is provided with the hush pipe, sound-proof housing front end position is provided with heat dissipation mechanism, the air intake has been seted up to sound-proof housing front end position. The utility model discloses the device passes through the sound-proof housing and seals the organism, thereby reduce the noise that the organism produced, and utilize the cavity to improve the syllable-dividing effect of sound-proof housing, through the noise of amortization pipe reduction air outlet, the noise that the organism produced when using has effectively been reduced, but centrifugal fan can take place to shake when using, make centrifugal fan drive base take place to shake, thereby produce great noise, and simultaneously, the vibrations of base still can lead to centrifugal fan and the bolt of backup pad fixed department not hard up, influence centrifugal fan's use.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a low noise centrifugal fan to solve among the prior art centrifugal fan can take place the shake when using, make centrifugal fan drive the base and take place vibrations, thereby produce great noise, simultaneously, the vibrations of base still can lead to centrifugal fan and base fixed department's bolt not hard up, influence centrifugal fan's the technical problem of use.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a low noise centrifugal fan, includes the base, the inside of base is equipped with the backup pad, the last fixed surface of backup pad installs motor and fan body, there are a plurality of sliding blocks in the inside bottom of base through spout sliding connection, the equal first attenuator of fixedly connected with of outer wall of sliding block, the other end of first attenuator and the inside wall fixed connection of base, first spring has been cup jointed in the outside activity of first attenuator, first spring is contradicted between the outer wall of sliding block and the inside wall of base, be equipped with two support bodies between the bottom of backup pad and the inside bottom of base, two the upper and lower both ends of support body all articulate mutually through the pivot respectively with the lower extreme of backup pad and the upper end of sliding block, the dashpot that holds a plurality of second attenuators is seted up to the inner wall upper end of base, the inner wall of dashpot has the baffle through spout sliding connection, the both ends of second attenuator respectively with the inner wall of dashpot and the outer wall fixed connection of baffle, the outside activity of second attenuator has cup jointed the second spring, the conflict of second spring is between the inner wall of dashpot and the baffle, the outer wall of backup pad is contradicted.

As the utility model discloses a preferred technical scheme, the upper end fixedly connected with sound-proof housing of base, the outer wall fixed mounting of sound-proof housing has the water tank, the upper end fixed mounting of water tank has the water pump, the end of intaking of water pump is linked together through the inside lower extreme of connecting pipe with the water tank, the external fixation of motor has cup jointed the cooling jacket, the inside of cooling jacket is around being provided with cooling line, cooling line's the end of intaking is linked together through the play water end of intake hose with the water pump, cooling line's play water end is linked together through the inside upper end of going out water hose with the water tank.

As the utility model discloses a preferred technical scheme, the upper end of sound-proof housing is equipped with the lid, a plurality of fixed blocks of lateral wall fixedly connected with of lid, a plurality of connecting blocks of lateral wall upper end fixedly connected with of sound-proof housing, the lateral wall of fixed block seted up with screw bolt assorted fixing hole, the one end and the connecting block of screw bolt are articulated, the outside threaded connection of screw bolt has the nut.

As the utility model discloses an optimized technical scheme, the equal fixedly connected with soundproof cotton in bottom of the inner wall of sound-proof housing and the lid, the air intake of fan body and the equal fixed mounting in outside of air outlet have the amortization hose, air inlet through-hole and air-out through-hole, two have been seted up to the outer wall of sound-proof housing the other end of sound-proof housing respectively with the inner wall fixed connection of air inlet through-hole and air-out through-hole.

As the utility model discloses an optimized technical scheme, the outer wall fixedly connected with lower fixing ring of sound-proof housing, lower fixing ring's one end is articulated with upper fixing ring's one end, the constant head tank has been seted up to lower fixing ring's the other end, upper fixing ring's other end fixedly connected with and constant head tank assorted locating piece, the draw-in groove that is used for the first filter screen of joint and second filter screen is all offered to upper fixing ring and lower fixing ring's inner wall, the filtration pore and the air inlet through-hole of first filter screen and second filter screen are linked together.

As the utility model discloses a preferred technical scheme, the equal fixed mounting in bottom four corners of base has the universal wheel, a plurality of elevator blocks of outer wall fixedly connected with of base, the inside threaded connection of elevator block has the threaded rod, the lower extreme of threaded rod rotates and is connected with the supporting shoe, the top fixedly connected with handle of threaded rod, the bottom fixedly connected with rubber pad of supporting shoe.

The utility model provides a low noise centrifugal fan possesses following beneficial effect:

1. this is novel through the cooperation of support body, first spring and first attenuator, cushions the power of the vertical direction vibrations of backup pad, and the cooperation of the second attenuator through baffle, second spring cushions the power of the horizontal vibrations of backup pad to alleviateed the striking that produces because of the organism vibrations between base and the ground, thereby reduced the noise, simultaneously, prevent that centrifugal fan and backup pad fixed department's bolt is not hard up because of vibrations, influences centrifugal fan's use.

2. This is novel through the cooling liquid of water pump in with the water tank through the connecting pipe with the hose that intakes in the cooling line, dispel the heat to the motor, then, the cooling liquid rethread goes out the water hose and carries out reuse in getting into the water tank again, avoids long-time use motor to lead to inside high temperature to cause the internals to damage, has prolonged the life of whole device.

Drawings

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

fig. 2 is a schematic side view of the present invention;

FIG. 3 is an exploded view of the lower retainer ring of the present invention;

fig. 4 is a schematic structural view of the upper fixing ring and the lower fixing ring of the present invention;

FIG. 5 is an enlarged view of FIG. 1 at A;

fig. 6 is an enlarged view of fig. 1 at B.

In the figure: 1. a base; 2. a support plate; 3. a motor; 4. a fan body; 5. a slider; 6. a first damper; 7. a first spring; 8. a frame body; 9. a baffle plate; 10. a second damper; 11. a second spring; 12. a sound-proof housing; 13. a water tank; 14. a water pump; 15. a cooling jacket; 16. a cooling pipeline; 17. a cover body; 18. a fixed block; 19. connecting blocks; 20. a threaded bolt; 21. sound insulation cotton; 22. a silencing hose; 23. a lower fixing ring; 24. an upper fixing ring; 25. positioning blocks; 26. a first filter screen; 27. a second filter screen; 28. a lifting block; 29. a threaded rod; 30. and (6) supporting the block.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, the present invention provides a technical solution: the utility model provides a low noise centrifugal fan, includes base 1, the inside of base 1 is equipped with backup pad 2, the last fixed surface of backup pad 2 installs motor 3 and fan body 4, there are a plurality of sliding blocks 5 in the inside bottom of base 1 through spout sliding connection, the equal first attenuator of fixedly connected with 6 of outer wall of sliding block 5, the other end of first attenuator 6 and base 1's inside wall fixed connection, first spring 7 has been cup jointed in the outside activity of first attenuator 6, first spring 7 is contradicted between the outer wall of sliding block 5 and base 1's inside wall, be equipped with two support bodies 8 between the bottom of backup pad 2's the inside bottom of base 1, two the upper and lower both ends of support body 8 all are articulated mutually with the lower extreme of backup pad 2 and the upper end of sliding block 5 respectively through the pivot, the dashpot that holds a plurality of second attenuator 10 is seted up to the inner wall upper end of base 1, the inner wall of dashpot has baffle 9 through spout sliding connection, the inner wall of dashpot has baffle 9, the outer wall of second attenuator 10 both ends respectively with the inner wall of dashpot and baffle 9's outer wall fixed connection, second attenuator 10 outer wall cup joints, the outside activity of second attenuator has second attenuator 11, the baffle 11, the outer wall of second attenuator is inconsistent the baffle 9 and baffle 11 is inconsistent at the outer wall of backup pad outer wall of second outer wall and baffle 9, the outer wall of baffle 9. Through mutually supporting of first spring 7, second spring 11, first attenuator 6 and second attenuator 10, the power that produces when can shaking backup pad 2 cushions, prevents that backup pad 2 from driving base 1 vibrations, produces great noise.

Wherein, the upper end fixedly connected with sound-proof housing 12 of base 1, the outer wall fixed mounting of sound-proof housing 12 has water tank 13, the upper end fixed mounting of water tank 13 has water pump 14, the end of intaking of water pump 14 is linked together through the inside lower extreme of connecting pipe with water tank 13, the external fixation of motor 3 has cup jointed cooling jacket 15, cooling jacket 15's inside is around being provided with cooling tube 16, cooling tube 16's the end of intaking is linked together through the play water end of intaking hose with water pump 14, cooling tube 16's play water end is linked together through the inside upper end of going out water hose with water tank 13. The water pump 14 pumps water in the water tank 13 into the cooling pipeline 16, so that the motor 3 can be cooled by water conveniently, and the motor 3 is prevented from being influenced by high temperature.

Wherein, the upper end of sound-proof housing 12 is equipped with lid 17, a plurality of fixed blocks 18 of lateral wall fixedly connected with of lid 17, a plurality of connecting blocks 19 of lateral wall upper end fixedly connected with of sound-proof housing 12, the lateral wall of fixed block 18 seted up with screw bolt 20 assorted fixing hole, the one end of screw bolt 20 is articulated with connecting block 19, the outside threaded connection of screw bolt 20 has the nut. Through the cooperation of fixed block 18, connecting block 19, screw bolt 20 and nut, guarantee the lid 17 to the sealed of sound-proof housing 12, increase syllable-dividing effect, simultaneously, conveniently take off lid 17, inspect the maintenance to fan body 4.

Wherein, the inner wall of sound-proof housing 12 and the equal fixedly connected with soundproof cotton 21 in bottom of lid 17, the air intake of fan body 4 and the equal fixed mounting in outside of air outlet have amortization hose 22, air inlet through-hole and air-out through-hole, two have been seted up to the outer wall of sound-proof housing 12 the other end of sound-proof housing 12 respectively with air inlet through-hole and air-out through-hole's inner wall fixed connection. Noise generated when the fan body 4 and the motor 3 operate can be isolated through the soundproof cotton 21, and noise of the air outlet and the air inlet can be eliminated when the fan operates through the silencing hose 22.

Wherein, outer wall fixedly connected with lower fixing ring 23 of sound-proof housing 12, the one end of lower fixing ring 23 is articulated with the one end of upper fixing ring 24, the constant head tank has been seted up to the other end of lower fixing ring 23, the other end fixedly connected with and constant head tank assorted locating piece 25 of upper fixing ring 24, the draw-in groove that is used for the first filter screen 26 of joint and second filter screen 27 is all offered to the inner wall of upper fixing ring 24 and lower fixing ring 23, the filtration pore and the air inlet through hole of first filter screen 26 and second filter screen 27 are linked together. The upper fixing ring 24 is rotated at the hinged position of the upper fixing ring 24 and the lower fixing ring 23, so that the positioning block 25 is separated from the fixing groove, the first filter screen 26 and the second filter screen 27 are conveniently replaced and cleaned, and the fan body 4 is convenient to use.

The universal wheels are fixedly mounted at four corners of the bottom end of the base 1, a plurality of lifting blocks 28 are fixedly connected to the outer wall of the base 1, threaded rods 29 are connected to the inner threads of the lifting blocks 28, supporting blocks 30 are rotatably connected to the lower ends of the threaded rods 29, handles are fixedly connected to the top ends of the threaded rods 29, and rubber pads are fixedly connected to the bottom ends of the supporting blocks 30. The supporting block 30 is driven to move up and down by rotating the threaded rod 29, so that the base 1 moving through the universal wheels can be conveniently supported and fixed.

The specific use mode and function of the embodiment are as follows:

the utility model discloses when using, this low noise centrifugal fan, through setting up support body 8 cooperation sliding block 5 between backup pad 2 and the 1 inside bottom of base, first attenuator 6 and first spring 7 have played the effect of buffering to the power of the 2 vertical direction vibrations of backup pad, and simultaneously, through baffle 9 cooperation second attenuator 10 and second spring 11 played the effect of buffering to the power of the 2 horizontal vibrations of backup pad, after fan body 4 starts, backup pad 2 will take place the vibrations of vertical direction, vibrations will make support body 8 take place to rock, power when rocking will make sliding block 5 take place to remove, the power that will utilize first spring 7 to remove buffering sliding block 5 to receive this moment, later when first spring 7 releases absorptive power, will utilize first attenuator 6 to remove the elastic potential energy of restricting first spring 7 continuous release, thereby play the effect of buffering, backup pad 2 may take place horizontal backup pad, will make baffle 9 take place to remove, this moment will utilize second spring 11 to remove the power that buffering sliding block 5 received, later when second spring 11 releases the absorptive power, will utilize second spring 11 to remove the continuous damping potential energy of restricting the second to drive the base 2, thereby the base damping structure of avoiding vibration to remove 1 noise of the noise.

In the using process, firstly, the base 1 is driven to move to a proper position through the universal wheel, the threaded rod 29 is rotated to drive the supporting block 30 to move downwards to support and fix the base 1, then, the fan body 4 is started, the supporting plate 2 can vibrate in the vertical direction, the vibration can enable the frame body 8 to shake, the force generated during shaking can enable the sliding block 5 to move, at the moment, the first spring 7 is utilized to buffer the force applied to the sliding block 5, meanwhile, the first damper 6 is utilized to limit the elastic potential energy continuously released by the first spring 7, so that the buffering effect is achieved, meanwhile, the supporting plate 2 can vibrate transversely, the baffle 9 can move, at the moment, the second spring 11 is utilized to buffer the force applied to the sliding block 5, the second damper 10 is utilized to limit the elastic potential energy continuously released by the second spring 11, so that the buffering effect is achieved, the buffer structure is utilized to prevent the fan body 4 from driving the support plate 2 to vibrate and drive the base 1 to vibrate to generate larger noise, meanwhile, the water pump 14 conveys the cooling liquid in the water tank 13 into the cooling pipeline 16 through the connecting pipe and the water inlet hose to radiate the heat of the motor 3, then the cooling liquid enters the water tank 13 again through the water outlet hose to be recycled, the damage of internal parts caused by overhigh internal temperature due to the long-time use of the motor 3 is avoided, when the fan body 4 needs to be inspected and maintained, the nut is rotated, the threaded bolt 20 is rotated to separate the threaded bolt 20 from the fixed through hole, the cover body 17 is conveniently taken down, the soundproof cotton 21 fixed on the inner wall of the soundproof cover 12 can isolate the noise generated when the fan body 4 and the motor 3 run, and the silencing hose 22 can eliminate the noise of the air outlet and the air inlet when the fan runs, when first filter screen 26 and second filter screen 27 need to be changed the clearance, can rotate upper fixing ring 24 through upper fixing ring 24 and lower fixing ring 23's articulated department, make locating piece 25 break away from the fixed slot, take off first filter screen 26 and second filter screen 27 and clear up, prevent that first filter screen 26 and second filter screen 27 from blockking up, influence fan body 4's use.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a low noise centrifugal fan which characterized in that: comprises a base (1), a supporting plate (2) is arranged in the base (1), a motor (3) and a fan body (4) are fixedly arranged on the upper surface of the supporting plate (2), a plurality of sliding blocks (5) are connected to the inner bottom of the base (1) through sliding chutes in a sliding manner, first dampers (6) are fixedly connected to the outer walls of the sliding blocks (5), the other ends of the first dampers (6) are fixedly connected to the inner side wall of the base (1), first springs (7) are sleeved on the outer portions of the first dampers (6), the first springs (7) are abutted between the outer walls of the sliding blocks (5) and the inner side wall of the base (1), two frame bodies (8) are arranged between the bottom end of the supporting plate (2) and the inner bottom of the base (1), the upper ends and the lower ends of the two frame bodies (8) are respectively hinged to the lower end of the supporting plate (2) and the upper end of the sliding block (5) through rotating shafts, buffer grooves for accommodating a plurality of second dampers (10) are arranged on the upper end of the inner wall of the base (1), and second dampers (10) are respectively connected to the sliding chutes (9) through sliding chutes (9), and second dampers (9), the second spring (11) is abutted between the inner wall of the buffer groove and the outer wall of the baffle plate (9), and the outer wall of the support plate (2) is abutted to the outer wall of the baffle plate (9).

2. A low noise centrifugal fan according to claim 1, wherein: the utility model discloses a motor cooling water tank, including base (1), sound-proof housing (12), the outer wall fixed mounting of sound-proof housing (12) has water tank (13), the upper end fixed mounting of water tank (13) has water pump (14), the end of intaking of water pump (14) is linked together through the inside lower extreme of connecting pipe with water tank (13), cooling jacket (15) have been cup jointed to the external fixation of motor (3), the inside of cooling jacket (15) is around being provided with cooling line (16), the end of intaking of cooling line (16) is linked together through the play water end of intaking hose with water pump (14), the play water end of cooling line (16) is linked together through the inside upper end of going out water hose and water tank (13).

3. A low noise centrifugal fan according to claim 2, wherein: the upper end of sound-proof housing (12) is equipped with lid (17), a plurality of fixed blocks of lateral wall fixedly connected with (18) of lid (17), a plurality of connecting blocks of lateral wall upper end fixedly connected with (19) of sound-proof housing (12), the lateral wall of fixed block (18) seted up with threaded bolt (20) assorted fixing hole, the one end and the connecting block (19) of threaded bolt (20) are articulated, the outside threaded connection of threaded bolt (20) has the nut.

4. A low noise centrifugal fan according to claim 2, wherein: the utility model discloses a fan, including sound-proof housing (12), the equal fixedly connected with soundproof cotton (21) in bottom of the inner wall of sound-proof housing (12) and lid (17), the equal fixed mounting in outside of the air intake of fan body (4) and air outlet has amortization hose (22), air inlet through-hole and air-out through-hole, two have been seted up to the outer wall of sound-proof housing (12) the other end of sound-proof housing (12) respectively with the inner wall fixed connection of air inlet through-hole and air-out through-hole.

5. A low noise centrifugal fan according to claim 2, wherein: the outer wall fixedly connected with of sound-proof housing (12) is solid fixed ring (23) down, the one end of solid fixed ring (23) is articulated with the one end of last solid fixed ring (24) down, the constant head tank has been seted up to the other end of solid fixed ring (23) down, the other end fixedly connected with and constant head tank assorted locating piece (25) of last solid fixed ring (24), the draw-in groove that is used for first filter screen of joint (26) and second filter screen (27) is all offered to the inner wall of solid fixed ring (24) down, the filtration pore and the air inlet through-hole of first filter screen (26) and second filter screen (27) are linked together.

6. A low noise centrifugal fan according to claim 1, wherein: the all fixed mounting in bottom four corners of base (1) has the universal wheel, a plurality of elevator blocks (28) of the outer wall fixedly connected with of base (1), the internal thread of elevator block (28) is connected with threaded rod (29), the lower extreme of threaded rod (29) rotates and is connected with supporting shoe (30), the top fixedly connected with handle of threaded rod (29), the bottom fixedly connected with rubber pad of supporting shoe (30).

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