CN116464675B - Shock-absorbing noise reduction device for ventilator built-in fan - Google Patents
Shock-absorbing noise reduction device for ventilator built-in fan Download PDFInfo
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- CN116464675B CN116464675B CN202310734173.5A CN202310734173A CN116464675B CN 116464675 B CN116464675 B CN 116464675B CN 202310734173 A CN202310734173 A CN 202310734173A CN 116464675 B CN116464675 B CN 116464675B
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- air
- fixedly connected
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- fan
- plate
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- 230000009467 reduction Effects 0.000 title claims abstract description 24
- 238000013016 damping Methods 0.000 claims abstract description 41
- 238000005192 partition Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 9
- 230000035939 shock Effects 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 230000003116 impacting effect Effects 0.000 abstract description 4
- 239000000428 dust Substances 0.000 description 15
- 241000883990 Flabellum Species 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 208000000884 Airway Obstruction Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- 201000004193 respiratory failure Diseases 0.000 description 1
- 230000004202 respiratory function Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a shock-absorbing noise-reducing device for a ventilator built-in fan, which is used for reducing noise generated when the fan works. The damping noise reduction device for the ventilator built-in fan comprises: a shell, a connecting piece, a fluted disc and the like; the lower side of the shell is provided with a connecting piece; the rear side in the shell is rotationally connected with a fluted disc. According to the invention, the guide plate plays a guide role on the thrown air, so that the guided air flows to the air outlet of the shell rapidly, and the problems that in the prior art, the thrown air directly contacts with the inner wall of the shell to cause the air to strike the inner wall, and meanwhile, the thrown air is disordered in a shell channel, so that the air is always in a state of impacting the shell during working, and noise is generated are solved.
Description
Technical Field
The invention relates to the technical field of respirators, in particular to a shock-absorbing noise-reducing device for an internal fan of a respirator.
Background
A ventilator is a device that can assist or replace breathing of a person, increase pulmonary ventilation, and improve respiratory function, and is generally used for patients with pulmonary failure or airway obstruction that cannot breathe normally.
In the existing fan, air only enters the fan through one through hole, so that air flow generated by the air can impact the fan and a driving motor, noise is generated when the fan works, the air entering the fan is thrown out under the centrifugal effect of the fan, the thrown air directly contacts with the inner wall of the fan, the air is impacted against the inner wall, meanwhile, the thrown air is disordered in a fan channel, and therefore the fan is always in a state of impacting the fan when in work, and noise is generated;
in addition, after the fan is used for a long time, dust can exist in the fan, and the dust can block a filter screen and a chassis on the fan, so that the noise of the fan is increased, the noise is not only large, but also vibration is easy to generate when the fan of the existing breathing machine is operated, the stability of equipment is affected, and the generated noise can influence the rest of a patient.
Disclosure of Invention
The invention aims to provide a damping noise reduction device for a ventilator built-in fan, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a damping noise reduction device for a ventilator built-in fan comprises a shell, a connecting piece, a fluted disc, a first fan blade, a second fan blade, a circular ring and a power assembly; the lower side of the shell is provided with a connecting piece; the rear side in the shell is rotationally connected with a fluted disc; the front side of the fluted disc is fixedly connected with a plurality of first fan blades, and an air outlet is arranged between two adjacent first fan blades; the front side of the fluted disc is fixedly connected with a plurality of second fan blades, and the first fan blades and the second fan blades are distributed in a dislocation manner; a first air inlet and a second air inlet are respectively arranged between the first fan blade and the second fan blade; all the first fan blades and the second fan blades are fixedly connected with a circular ring together; the shell is connected with a power assembly, and the fluted disc is driven to rotate by the power assembly;
the device also comprises a T-shaped rod, a shaft sleeve, a torsion spring, a guide plate, a first windward plate and a damping component; the outer end of each first fan blade is fixedly connected with a T-shaped rod; each T-shaped rod is rotatably connected with two shaft sleeves; each T-shaped rod is fixedly connected with two torsion springs, and one end of each torsion spring is fixedly connected with the shaft sleeve; a guide plate is fixedly connected with each two shaft sleeves; the outer side of each guide plate is fixedly connected with a first windward plate; the fluted disc front side is connected with the damper that is annular equidistance and distributes the same with first flabellum quantity, and damper is located first flabellum and second flabellum inboard, and damper is connected with first flabellum.
Further, a through hole is formed in the middle of the front side and the middle of the rear side of the casing for air to enter.
Further, the guide plate is provided in an arc shape.
Further, an annular channel is formed between the fluted disc and the circular ring in cooperation with the housing.
Further, the sealing strip and the first partition plate are also included; each T-shaped rod is fixedly connected with a sealing strip, and the sealing strips are positioned on one side of the guide plate; the inner ring surface of each guide plate is respectively and rotatably connected with two first partition plates which are distributed in a central symmetry way, and the first partition plates are arranged to rotate in one direction.
Further illustratively, the damper assembly includes a torsion spring bar, a baffle, a damper plate, and a second windward plate; the fluted disc is rotationally connected with a torsion spring rod, the torsion spring rod is positioned on the inner sides of the first fan blade and the second fan blade, and the torsion spring rod is fixedly connected with a baffle; the torsion spring rod is fixedly connected with two damping plates, the damping plates are positioned on one side of the baffle, the damping plates are elastic sheet baffles, and the damping plates are contacted with the first fan blades; the left side of the baffle is fixedly connected with a second windward plate.
Further, the shock absorbing plate is provided in an arc shape.
Further illustratively, the shock assembly further includes a second spacer and a rubber strip; the baffle is rotationally connected with a second baffle plate which is arranged to rotate unidirectionally; the inner end of the first fan blade is fixedly connected with a rubber strip, and the rubber strip is in contact with the baffle.
Further stated, the housing is connected with a buffer assembly; the buffer component comprises a connecting seat, a buffer plate and an air pump; the shell is fixedly connected with a plurality of connecting seats which are distributed in a ring shape; all the connecting seats are fixedly connected with a buffer plate which is an air bag; the lower part of the shell is provided with an air pump; the air outlet of the air pump is communicated with the buffer plate.
Further stated, the inner annular surface of the buffer plate is provided with a plurality of buffer strips.
Advantageous effects
A. According to the invention, as the middle part of the front side and the middle part of the rear side of the shell are respectively provided with the through holes, when the device is used, air is subjected to opposite flushing when passing through the two through holes, the air subjected to opposite flushing is diffused, and then the diffused air enters a channel formed between the fluted disc and the circular ring, so that the phenomenon that the air only enters the fan through one through hole when the conventional fan works is avoided, and air flow generated by the air can impact the fan, so that noise is generated when the fan works.
B. The invention also plays a guiding role on the thrown air through the guide plate, so that the guided air flows to the air outlet of the shell quickly, thereby avoiding the phenomenon that the thrown air directly contacts with the inner wall of the shell to cause the air to strike the inner wall in the prior art, and meanwhile, the thrown air is disordered in the shell channel, so that the air is always in a state of impacting the shell during working, and noise is generated.
C. The invention also presses the first fan blade through the damping plate, and the damping plate is an elastic piece, so that the damping plate deforms, and the first fan blade is prevented from vibrating too much to generate noise when rotating.
D. The invention also controls the air pump to work, so that the air in the buffer plate is pumped out, the pumped air enters the shell, and as the fluted disc, the first fan blade, the second fan blade, the circular ring, the first electric rotating shaft, the guide plate, the sealing strip and the first one-way valve form a sealed circular body, the air pressure in the shell channel gradually increases, then the first one-way valve is opened under the action of the air pressure, and the air in the shell enters the channel formed between the fluted disc and the circular ring through the first one-way valve, and dust in the shell channel flows out of the first one-way valve together with the air in the process;
then through the cooperation of first check valve and second check valve for the dust in the casing is discharged, and the dust after the discharge will be absorbed by peripheral hardware dust catcher, has avoided the dust to stay in the casing for a long time, leads to the dust to adhere to on first flabellum, second flabellum and other spare part easily, and influences its life, has also avoided the dust to cause the jam to filter screen and the chassis on the fan simultaneously, makes the noise grow of fan.
Drawings
FIG. 1 is a schematic view of a first view angle of a vibration/noise reduction device for a ventilator of the present invention;
FIG. 2 is a schematic view of a second view angle of a vibration/noise reduction device for a ventilator of the present invention;
FIG. 3 is a schematic view of a third view angle of a vibration/noise reduction device for a ventilator of the present invention;
FIG. 4 is a partial cross-sectional view of a vibration/noise reduction apparatus for a ventilator built-in blower of the present invention;
FIG. 5 is a schematic view of a first partial structure of a vibration/noise reduction device for a ventilator built-in blower according to the present invention;
FIG. 6 is an enlarged view of the A-position of the vibration/noise reduction device for a ventilator built-in blower of the present invention;
FIG. 7 is a schematic view of a second partial structure of a vibration/noise reduction apparatus for a ventilator built-in blower according to the present invention;
FIG. 8 is an enlarged view of the B-site of the vibration/noise reduction device for a ventilator built-in blower of the present invention;
FIG. 9 is a schematic view of a third partial structure of a vibration/noise reduction device for a ventilator built-in blower according to the present invention;
fig. 10 is a schematic view of a fourth partial structure of the vibration/noise reduction device for a ventilator of the present invention.
In the above figures: 1-a shell, 2-a connecting piece, 3-fluted disc, 31-first fan blade, 32-second fan blade, 33-circular ring, 3 a-air outlet, 3 b-first air inlet, 3 c-second air inlet, 4-T-shaped rod, 5-shaft sleeve, 51-torsion spring, 6-guide plate, 7-sealing strip, 8-first baffle and 9-first windward plate;
201-a motor, 202-a spur gear;
301-torsion spring rods, 302-baffle plates, 303-damping plates, 304-second baffle plates, 305-rubber strips, 306-second windward plates;
401-connecting seat, 402-buffer plate, 403-aspiration pump.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
Example 1
1-6, the damping noise reducer for the ventilator built-in fan comprises a casing 1, a connecting piece 2, a fluted disc 3, a first fan blade 31, a second fan blade 32, a circular ring 33 and a power assembly; the lower side of the shell 1 is fixedly connected and communicated with a connecting piece 2; the rear side in the shell 1 is rotationally connected with a fluted disc 3; the front side of the fluted disc 3 is fixedly connected with a plurality of first fan blades 31 which are distributed in an annular equidistant manner, and an air outlet 3a is arranged between two adjacent first fan blades 31; the front side of the fluted disc 3 is fixedly connected with a plurality of second fan blades 32 which are distributed in an annular equidistant manner, the first fan blades 31 and the second fan blades 32 are distributed in a dislocation manner, the number of the first fan blades 31 and the second fan blades 32 can be set according to actual conditions, and a first air inlet 3b and a second air inlet 3c are respectively arranged between the first fan blades 31 and the second fan blades 32; the front sides of all the first fan blades 31 and the second fan blades 32 are fixedly connected with a circular ring 33 together, and the circular ring 33 is rotationally connected with the inner front side of the shell 1; the machine shell 1 is connected with a power assembly, the fluted disc 3 is driven to rotate through the power assembly, so that the first fan blade 31, the second fan blade 32 and the circular ring 33 synchronously rotate along with the fluted disc 3, and air between the fluted disc 3 and the circular ring 33 is centrifugally thrown out by the first fan blade 31 and the second fan blade 32 under the rotation of the first fan blade 31 and the second fan blade 32, and the thrown air flows out through a channel in the machine shell 1;
the device also comprises a T-shaped rod 4, a shaft sleeve 5, a torsion spring 51, a guide plate 6, a first windward plate 9 and a damping component; the outer end of each first fan blade 31 is fixedly connected with a T-shaped rod 4; the outer ring surface of each T-shaped rod 4 is respectively and rotatably connected with two shaft sleeves 5; each T-shaped rod 4 is fixedly connected with two torsion springs 51 which are symmetrical in front-back, and one end of each torsion spring 51 is fixedly connected with a shaft sleeve 5; the outer ring surfaces of every two shaft sleeves 5 are fixedly connected with a guide plate 6 respectively; the outer side of each guide plate 6 is fixedly connected with a first windward plate 9, in the rotation process of the first fan blades 31 and the second fan blades 32, the lower side of the first windward plate 9 is pushed by wind, and simultaneously, the guide plates 6 are rotated upwards in cooperation with the centrifugal force generated when the fluted disc 3 rotates, so that the air outlet 3a of a channel formed by two adjacent first fan blades 31 is in an open state, air thrown out by the first fan blades 31 and the second fan blades 32 flows out from the air outlet 3a, the air after flowing out is contacted with the guide plates 6, and the guide plates 6 play a guide role on the thrown air, so that the guided air quickly flows to the air outlet of the casing 1; the fluted disc 3 front side is connected with a plurality of damper that are annular equidistance and distribute, and damper is located first flabellum 31 and second flabellum 32 inboard, and damper is connected with first flabellum 31.
The through holes are respectively formed in the middle of the front side and the middle of the rear side of the casing 1 and are used for entering air, so that when the air passes through the two through holes, the air is subjected to opposite flushing, the air subjected to opposite flushing is diffused and then enters the casing 1, the phenomenon that the air enters the fan through only one through hole in the existing fan is avoided, and accordingly the air flow generated by the air can impact the fan, so that noise is generated when the fan works.
The guide plate 6 is arranged in an arc shape, so that the guide plate 6 can better guide the thrown air, and the air is accelerated to flow out of the channel in the shell 1.
With the housing 1, an annular channel is formed between the fluted disc 3 and the circular ring 33, so that air enters the annular channel first, and then the air in the annular channel is centrifugally thrown into the housing 1 under the rotation of the first fan blade 31 and the second fan blade 32.
The sealing strip 7 and the first partition plate 8 are also included; each T-shaped rod 4 is fixedly connected with a sealing strip 7, and the sealing strips 7 are positioned on one side of the guide plate 6; the inner ring surface of each guide plate 6 is respectively connected with two first partition plates 8 which are distributed in a central symmetry way, and the first partition plates 8 are arranged to rotate in a unidirectional way.
The power assembly comprises a motor 201 and a spur gear 202; the right part of the rear side of the machine shell 1 is connected with a motor 201 through bolts, and an output shaft of the motor 201 penetrates through the machine shell 1; the output shaft of the motor 201 is fixedly connected with a spur gear 202; spur gear 202 meshes with toothed disc 3.
When the damping noise reducer for the ventilator is used, as the middle part of the front side and the middle part of the rear side of the casing 1 are respectively provided with one through hole, when the device is used, air is opposite to each other when passing through the two through holes, the opposite air is diffused, then the diffused air enters a channel formed between the fluted disc 3 and the circular ring 33, thus the phenomenon that the existing ventilator is in operation, the air enters the ventilator through only one through hole, the air flow generated by the air impacts the ventilator, the noise is generated when the ventilator is in operation, then the damping component is controlled to work, the first air inlet 3b of the channel formed between the first fan blade 31 and the second fan blade 32 is in an open state, thus the air inlet amount is ensured, the motor 201 is controlled to rotate the spur gear 202 based on the front-back view, the spur gear 202 drives the fluted disc 3 to rotate clockwise, the first fan blade 31, the second fan blade 32, the circular ring 33, the T-shaped rod 4, the shaft sleeve 5, the torsion spring 51, the guide plate 6, the sealing strip 7, the first partition plate 8, the first windward plate 9 and the damping component synchronously rotate along with the spur gear 202, the lower side of the first windward plate 9 is further forced by wind, and simultaneously, the guide plate 6 rotates upwards in cooperation with the centrifugal force generated when the fluted disc 3 rotates, the guide plate 6 drives the shaft sleeve 5 to rotate on the T-shaped rod 4, the first partition plate 8 and the first windward plate 9 synchronously rotate along with the guide plate 6, the torsion spring 51 rotates, the guide plate 6 after rotation is contacted with the sealing strip 7, the sealing strip 7 plays a limiting role on the guide plate 6, one end of the guide plate 6 is prevented from contacting with the inner wall of the casing 1, then after the guide plate 6 rotates, the air outlets 3a channel formed by two adjacent first fan blades 31 are in an open state, the air thrown out through the first fan blade 31 and the second fan blade 32 flows out from the air outlet 3a, the air after flowing out is contacted with the guide plate 6, the guide plate 6 plays a guiding role on the air thrown out, the air after guiding is enabled to flow to the air outlet of the shell 1 rapidly, the situation that in the prior art, the thrown out air is directly contacted with the inner wall of the shell 1, the air is caused to strike the inner wall, and meanwhile, the thrown out air is disordered in a channel of the shell 1, so that the air is always in a state of impacting the shell 1 during working, noise is generated, then the air entering the channel in the shell 1 flows into the connecting piece 2, and the air is conveyed out through the connecting piece 2.
Example two
Based on embodiment 1, as shown in fig. 7-9, the damping assembly includes a torsion spring rod 301, a baffle 302, a damping plate 303, and a second windward plate 306; the front side of the fluted disc 3 is rotationally connected with a torsion spring rod 301, the torsion spring rod 301 is positioned on the inner sides of the first fan blade 31 and the second fan blade 32, and the outer ring surface of the torsion spring rod 301 is fixedly connected with a baffle 302; the outer ring surface of the torsion spring rod 301 is fixedly connected with two damping plates 303, the damping plates 303 are positioned on one side of the baffle 302, and the damping plates 303 are elastic sheets, so that when the baffle 302 rotates, the damping plates 303 press the first fan blades 31, the damping plates 303 deform, the first fan blades 31 are prevented from vibrating too much to generate noise when rotating, and the damping plates 303 are contacted with the first fan blades 31; a second windward plate 306 is fixedly connected to the left side of the baffle 302.
The damper plate 303 is provided in an arc shape so that the damper plate 303 always keeps the first fan blade 31 in contact with the damper plate 302 in response to rotation of the damper plate, so that vibration caused by rotation of the first fan blade 31 is reduced.
The damping assembly further comprises a second diaphragm 304 and a rubber strip 305; the left side of the baffle 302 is rotatably connected with a second baffle 304, and the second baffle 304 is arranged to rotate unidirectionally; the inner end of the first fan blade 31 is fixedly connected with a rubber strip 305, and the rubber strip 305 is contacted with the baffle 302.
Meanwhile, in the rotation process of the fluted disc 3, the lower side of the second windward plate 306 is pushed by wind, and simultaneously, the baffle plate 302 rotates upwards in cooperation with the centrifugal force generated when the fluted disc 3 rotates, the damping plate 303, the second baffle plate 304 and the second windward plate 306 synchronously rotate along with the baffle plate 302, the torsion spring rod 301 is twisted, one end of the baffle plate 302 is separated from the second fan blade 32, the first air inlet 3b of a channel formed between the first fan blade 31 and the second fan blade 32 is in an open state, so that the air entering amount is ensured, and meanwhile, the damping plate 303 always limits the first fan blade 31 along with the rotation of the damping plate 303, so that the vibration of the first fan blade 31 is limited by the damping plate 303 when the first fan blade 31 rotates, and the noise generated by overlarge vibration of the first fan blade 31 is avoided.
Example III
On the basis of the embodiment 2, as shown in fig. 10, a buffer component is connected to the outer ring surface of the casing 1; the buffer assembly comprises a connecting seat 401, a buffer plate 402 and an air pump 403; the outer ring surface of the shell 1 is fixedly connected with three connecting seats 401 which are distributed in a ring shape; the inner side surfaces of all the connecting seats 401 are fixedly connected with a buffer plate 402, and the buffer plate 402 is an air bag; the lower part of the shell 1 is communicated with an air pump 403 through bolts; the air outlet of the air pump 403 is communicated with one end of the buffer plate 402.
The inner circumferential surface of the buffer plate 402 is provided with a plurality of buffer bars, thereby further reducing vibration of the casing 1 during operation.
In the process that the air in the channel in the shell 1 flows to the connecting piece 2, the air pump 403 is controlled to work at the same time, the air pump 403 pumps the air into the buffer plate 402, and as the buffer plate 402 is an air bag, the volume of the buffer plate 402 is enlarged along with the entering of the air, so that the enlarged buffer plate 402 is attached to the outer annular surface of the shell 1, and when parts in the shell 1 work, the buffer plate 402 has a buffering and damping effect on the shell 1, and the noise generated by the vibration of the shell 1 during the working is avoided;
when the fluted disc 3 stops working, the guide plate 6 is not subjected to centrifugal force any more, so that the torsion spring 51 is changed into a normal state from a torsion state, the shaft sleeve 5 is driven to rotate in the conversion process of the torsion spring 51, the shaft sleeve 5 drives the guide plate 6 to rotate downwards for reset, meanwhile, the baffle plate 302 is not subjected to centrifugal force any more, the torsion spring rod 301 is changed into a normal state from the torsion state, the baffle plate 302 is driven to rotate downwards for reset in the conversion process of the torsion spring rod 301, when the casing 1 is used for a long time, dust exists in the casing 1, at the moment, the motor 201 is controlled to rotate the spur gear 202, the spur gear 202 drives the fluted disc 3 to rotate anticlockwise based on the front-to-back view, the first fan blade 31 and parts connected with the spur gear rotate synchronously along with the fluted disc 3, in the process, the upper sides of the first windward plate 9 and the second windward plate 306 are subjected to force of wind pushing, and the guide plate 6 and the baffle plate 302 are matched with the force of the centrifugal force, so that the air outlet 3a of the channel formed by the two adjacent first blades 31 is in a closed state, and the first air inlet 3b of the channel formed between the first blades 31 and the second blades 32 is also in a closed state, and simultaneously the channel on the connecting piece 2 is closed, then the air pump 403 is controlled to work, so that the air in the buffer plate 402 is pumped out, the pumped air enters the machine shell 1, and a closed circular body is formed among the fluted disc 3, the first blades 31, the second blades 32, the circular ring 33, the shaft sleeve 5, the guide plate 6, the sealing strip 7 and the first baffle 8, so that the air pressure in the channel of the machine shell 1 gradually increases, then the first baffle 8 is opened under the action of the air pressure, as shown in figure 9, and the air in the machine shell 1 enters the channel formed between the fluted disc 3 and the circular ring 33 through the first baffle 8, in this process, the dust in the channel of the casing 1 will flow out from the first partition 8 together with the air, after the air pressure in the casing 1 is stabilized, the first partition 8 will be closed, meanwhile, under the action of the baffle 302, the second partition 304 and the rubber strip 305, the first air inlet 3b of the channel formed between the first fan blade 31 and the second fan blade 32 will be completely sealed, at this time, the air can only enter the channel formed between the first fan blade 31 and the second fan blade 32 from the second air inlet 3c, because the air outlet 3a of the channel formed between two adjacent first fan blades 31 is completely sealed by the T-shaped rod 4, the shaft sleeve 5, the guide plate 6, the sealing strip 7 and the first partition 8, the air pressure in the channel formed between the first fan blade 31 and the second fan blade 32 will be increased, then the second partition 304 will be opened under the action of the air pressure, the air in the channel flows out through the second partition 304, so that the dust in the casing 1 is discharged, the dust will be sucked away by the peripheral device, the dust stays in the long time in the casing 31, the dust is prevented from being attached to the second fan blade 31, and the noise is prevented from being caused to the fan chassis 32, and the noise is also prevented from being influenced.
The embodiments described above are intended to provide those skilled in the art with a means for making or using the present invention, and those skilled in the art may make various modifications or alterations to the above embodiments without departing from the inventive concept of the present invention, and thus the scope of the present invention is not limited to the above embodiments.
Claims (9)
1. A damping noise reduction device for a ventilator built-in fan comprises a casing (1); a connecting piece (2) is arranged at the lower side of the shell (1); the inner rear side of the shell (1) is rotationally connected with a fluted disc (3); the front side of the fluted disc (3) is fixedly connected with a plurality of first fan blades (31), and an air outlet (3 a) is arranged between two adjacent first fan blades (31); the front side of the fluted disc (3) is fixedly connected with a plurality of second fan blades (32), and the first fan blades (31) and the second fan blades (32) are distributed in a dislocation manner; a first air inlet (3 b) and a second air inlet (3 c) are respectively arranged between the first fan blade (31) and the second fan blade (32); all the first fan blades (31) and the second fan blades (32) are fixedly connected with a circular ring (33) together; the shell (1) is connected with a power assembly, and the fluted disc (3) is driven to rotate by the power assembly; the method is characterized in that: the outer end of each first fan blade (31) is fixedly connected with a T-shaped rod (4); each T-shaped rod (4) is rotatably connected with two shaft sleeves (5); each T-shaped rod (4) is fixedly connected with two torsion springs (51), and one end of each torsion spring (51) is fixedly connected with a shaft sleeve (5); each two shaft sleeves (5) are fixedly connected with a guide plate (6) together; the outer side of each guide plate (6) is fixedly connected with a first windward plate (9); the front side of the fluted disc (3) is connected with damping components which are the same as the first fan blades (31) in number and distributed in annular equal intervals, the damping components are positioned on the inner sides of the first fan blades (31) and the second fan blades (32), and the damping components are connected with the first fan blades (31);
the middle part of the front side and the middle part of the rear side of the shell (1) are respectively provided with a through hole for air to enter.
2. The vibration/noise reduction apparatus for a ventilator built-in blower according to claim 1, wherein: the guide plate (6) is arranged in an arc shape.
3. The vibration/noise reduction apparatus for a ventilator built-in blower according to claim 1, wherein: an annular channel is formed between the fluted disc (3) and the circular ring (33) under the matching of the casing (1).
4. The vibration/noise reduction apparatus for a ventilator built-in blower according to claim 1, wherein: also comprises a sealing strip (7); each T-shaped rod (4) is fixedly connected with a sealing strip (7), and the sealing strips (7) are positioned on one side of the guide plate (6); the inner ring surface of each guide plate (6) is respectively connected with two first partition plates (8) which are distributed in a central symmetry way, and the first partition plates (8) are arranged to rotate in a unidirectional way.
5. The damping noise reduction device for a ventilator built-in blower according to claim 4, wherein: the damping assembly comprises a torsion spring rod (301); the fluted disc (3) is rotationally connected with a torsion spring rod (301), the torsion spring rod (301) is positioned at the inner sides of the first fan blade (31) and the second fan blade (32), and the torsion spring rod (301) is fixedly connected with a baffle plate (302); the torsion spring rod (301) is fixedly connected with two damping plates (303), the damping plates (303) are positioned on one side of the baffle plate (302), the damping plates (303) are elastic sheet baffle plates (302), and the damping plates (303) are contacted with the first fan blades (31); the left side of the baffle plate (302) is fixedly connected with a second windward plate (306).
6. The vibration/noise reduction apparatus for a ventilator built-in blower according to claim 5, wherein: the damper plate (303) is provided in an arc shape.
7. The vibration/noise reduction apparatus for a ventilator built-in blower according to claim 5, wherein: the shock absorbing assembly further includes a second spacer (304); the baffle plate (302) is rotationally connected with a second baffle plate (304), and the second baffle plate (304) is arranged to rotate unidirectionally; the inner end of the first fan blade (31) is fixedly connected with a rubber strip (305), and the rubber strip (305) is contacted with the baffle plate (302).
8. The vibration/noise reduction apparatus for a ventilator built-in blower according to claim 7, wherein: the shell (1) is connected with a buffer component; the buffer component comprises a connecting seat (401); the shell (1) is fixedly connected with a plurality of connection seats (401) which are distributed in a ring shape; all the connecting seats (401) are fixedly connected with a buffer plate (402), and the buffer plate (402) is an air bag; an air pump (403) is arranged at the lower part of the shell (1); the air outlet of the air pump (403) is communicated with the buffer plate (402).
9. The vibration/noise reduction apparatus for a ventilator built-in blower according to claim 8, wherein: the inner annular surface of the buffer plate (402) is provided with a plurality of buffer strips.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310734173.5A CN116464675B (en) | 2023-06-20 | 2023-06-20 | Shock-absorbing noise reduction device for ventilator built-in fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310734173.5A CN116464675B (en) | 2023-06-20 | 2023-06-20 | Shock-absorbing noise reduction device for ventilator built-in fan |
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| CN116464675A CN116464675A (en) | 2023-07-21 |
| CN116464675B true CN116464675B (en) | 2023-09-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660535A (en) * | 2008-08-29 | 2010-03-03 | 株式会社日立产机系统 | Centrifugal fan and air fluid machinery using the same |
| DE102010009566A1 (en) * | 2010-02-26 | 2011-09-01 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Radial or diagonal fan wheel |
| CN106422012A (en) * | 2016-11-18 | 2017-02-22 | 泰锐菲克（天津）医疗科技有限公司 | Amortization cover and breathing machine |
| CN107299906A (en) * | 2016-04-15 | 2017-10-27 | 台达电子工业股份有限公司 | Impeller and its centrifugal fan being applicable |
| EP3981453A1 (en) * | 2019-06-06 | 2022-04-13 | Sysmed (China) Co., Ltd. | Fan of ventilator for use in treatment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011007767A1 (en) * | 2011-04-20 | 2012-10-25 | Rolls-Royce Deutschland Ltd & Co Kg | flow machine |
-
2023
- 2023-06-20 CN CN202310734173.5A patent/CN116464675B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660535A (en) * | 2008-08-29 | 2010-03-03 | 株式会社日立产机系统 | Centrifugal fan and air fluid machinery using the same |
| DE102010009566A1 (en) * | 2010-02-26 | 2011-09-01 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Radial or diagonal fan wheel |
| CN107299906A (en) * | 2016-04-15 | 2017-10-27 | 台达电子工业股份有限公司 | Impeller and its centrifugal fan being applicable |
| CN106422012A (en) * | 2016-11-18 | 2017-02-22 | 泰锐菲克（天津）医疗科技有限公司 | Amortization cover and breathing machine |
| EP3981453A1 (en) * | 2019-06-06 | 2022-04-13 | Sysmed (China) Co., Ltd. | Fan of ventilator for use in treatment |
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| Publication number | Publication date |
|---|---|
| CN116464675A (en) | 2023-07-21 |
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