CN113074125A - Novel centrifugal fan - Google Patents
Novel centrifugal fan Download PDFInfo
- Publication number
- CN113074125A CN113074125A CN202110417432.2A CN202110417432A CN113074125A CN 113074125 A CN113074125 A CN 113074125A CN 202110417432 A CN202110417432 A CN 202110417432A CN 113074125 A CN113074125 A CN 113074125A
- Authority
- CN
- China
- Prior art keywords
- casing
- fixedly connected
- mounting plate
- motor
- damping spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
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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
- 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
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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
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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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
- F04D29/40—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
-
- 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
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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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
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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
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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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
- F04D29/70—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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a novel centrifugal ventilator, which is fixedly connected with a fitting groove of a mounting plate through a casing, a first motor is fixedly connected with the casing, a first rotating shaft is fixedly connected with the output end of the first motor, a plurality of impellers are fixedly connected with the first rotating shaft, an inner cylinder is fixedly connected with the mounting plate, a limiting block is fixedly connected with the inner cylinder, a damping spring is fixedly connected with the limiting block, an outer cylinder is fixedly connected with the damping spring, four stand legs are fixedly connected with the outer cylinder, the fitting groove of the mounting plate is fitted with the casing and is contacted with the maximum area of the casing, the vibration generated by the first motor on the casing during working can be fully transmitted to the damping spring in the outer cylinder through the inner cylinder, the damping spring absorbs the vibration to provide stability for the casing, the casing is placed on the ground through the four stand legs, the contact area with the ground is reduced, the condition that the ground is uneven is avoided, and the vibration, the problem of novel centrifugal fan during operation stability relatively poor is solved.
Description
Technical Field
The invention relates to the technical field of centrifugal ventilators, in particular to a novel centrifugal ventilator.
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. The high-speed rotation of current novel centrifugal fan during operation motor produces vibrations, the stability of novel centrifugal fan during operation.
Disclosure of Invention
The invention aims to provide a novel centrifugal fan, and aims to solve the problem that the stability of the novel centrifugal fan is poor during working.
In order to achieve the purpose, the invention provides a novel centrifugal ventilator, which comprises a mounting plate, a casing, a first motor, a first rotating shaft, a plurality of impellers, an inner cylinder, a limiting block, a plurality of damping springs, an outer cylinder and four standing legs, wherein the mounting plate is provided with a matching groove, the casing is fixedly connected with the mounting plate and positioned at the matching groove, the first motor is fixedly connected with the casing and positioned on the outer side wall of the casing, the first rotating shaft is fixedly connected with the output end of the first motor and penetrates through the casing, the impellers are respectively fixedly connected with the first rotating shaft and positioned on the outer side wall of the first rotating shaft, the casing is provided with an air inlet and an air outlet, the air inlet is positioned on one side far away from the first motor, the air outlet is positioned on one side far away from the mounting plate, and the inner cylinder is fixedly connected with the mounting plate, the outer barrel is fixedly connected with the other side of the inner barrel, the outer barrel is fixedly connected with the other side of the damping spring, the outer barrel is positioned around the damping spring and the limiting block, and the four standing feet are fixedly connected with the outer barrel respectively and are positioned on one side far away from the damping spring.
The novel centrifugal ventilator further comprises a dust collection box, the mounting plate is further provided with a mounting cavity, and the dust collection box is connected with the mounting plate in a sliding mode and is located in the mounting cavity.
The novel centrifugal ventilator further comprises a force application handle, and the force application handle is fixedly connected with the dust collection box and is positioned on one side far away from the mounting plate.
The novel centrifugal fan further comprises a protective cover, wherein the protective cover is fixedly connected with the casing and located around the first motor.
The novel centrifugal ventilator further comprises four anti-slip pads, wherein the four anti-slip pads are respectively fixedly connected with the four standing feet and are located on one side of the outer barrel.
Wherein, novel centrifugal fan still includes the protection network, the protection network with casing fixed connection, and be located air intake department.
The novel centrifugal ventilator further comprises two handles, wherein the two handles are fixedly connected with the casing respectively and located on two sides of the casing.
The invention relates to a novel centrifugal ventilator, which is characterized in that a mounting plate is provided with a fitting groove, a casing is fixedly connected with the mounting plate and is positioned at the fitting groove, a first motor is fixedly connected with the casing and is positioned on the outer side wall of the casing, a first rotating shaft is fixedly connected with the output end of the first motor and penetrates through the casing, a plurality of impellers are respectively and fixedly connected with the first rotating shaft and are positioned on the outer side wall of the first rotating shaft, the casing is provided with an air inlet and an air outlet, the air inlet is positioned on one side far away from the first motor, the air outlet is positioned on one side far away from the mounting plate, an inner cylinder is fixedly connected with the mounting plate and is positioned on one side far away from the casing, a limiting block is fixedly connected with the other side of the inner cylinder, and a damping spring is fixedly connected with the other side of the, the urceolus with damping spring's opposite side fixed connection, just the urceolus is located damping spring with the stopper is four around, stand the foot respectively with urceolus fixed connection all is located and keeps away from damping spring's one side has solved the relatively poor problem of novel centrifugal fan during operation stability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a novel centrifugal fan;
FIG. 2 is a cross-sectional view of the novel centrifugal ventilator;
fig. 3 is a partially enlarged view a of fig. 2.
1-mounting plate, 2-conjunction groove, 3-machine shell, 4-first motor, 5-first rotating shaft, 6-impeller, 7-air inlet, 8-air outlet, 9-inner cylinder, 10-limiting block, 11-damping spring, 12-outer cylinder, 13-standing foot, 14-dust collecting box, 15-mounting cavity, 16-force applying handle, 17-protective cover, 18-anti-slip pad, 19-protective net, 20-lifting handle, 21-second motor, 22-second rotating shaft, 23-baffle and 24-bearing.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must be constructed and operated in a specific orientation and thus should not be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 3, the present invention provides a novel centrifugal fan, including a mounting plate 1, a casing 3, a first motor 4, a first rotating shaft 5, a plurality of impellers 6, an inner cylinder 9, a limiting block 10, a plurality of damping springs 11, an outer cylinder 12 and four stand legs 13, wherein the mounting plate 1 has a fitting groove 2, the casing 3 is fixedly connected with the mounting plate 1 and located at the fitting groove 2, the first motor 4 is fixedly connected with the casing 3 and located at an outer side wall of the casing 3, the first rotating shaft 5 is fixedly connected with an output end of the first motor 4 and penetrates through the casing 3, the plurality of impellers 6 are respectively fixedly connected with the first rotating shaft 5 and located at an outer side wall of the first rotating shaft 5, the casing 3 has an air inlet 7 and an air outlet 8, the air inlet 7 is located at a side away from the first motor 4, air outlet 8 is located and keeps away from one side of mounting panel 1, inner tube 9 with 1 fixed connection of mounting panel to be located and keep away from one side of casing 3, stopper 10 with the opposite side fixed connection of inner tube 9, damping spring 11 with the opposite side fixed connection of stopper 10, urceolus 12 with damping spring 11's opposite side fixed connection, just urceolus 12 is located damping spring 11 with stopper 10 is four around, stand foot 13 respectively with urceolus 12 fixed connection all is located and keeps away from one side of damping spring 11.
In this embodiment, when the first motor 4 rotates the impeller 6 on the first rotating shaft 5 during operation, the gas between the impellers 6 is subjected to centrifugal force to obtain kinetic energy and discharged from the periphery of the impeller 6 when the impeller 6 rotates, and flows to the air outlet 8 through the guiding of the volute-shaped casing 3, so that negative pressure is formed at the central part of the impeller 6, external air flows continuously from the air inlet 7 of the casing 3 to supplement due to the negative pressure source, the fitting groove 2 of the mounting plate 1 fits with the casing 3 and contacts with the maximum area of the casing 3, so that the vibration generated by the first motor 4 during operation on the casing 3 can be sufficiently transmitted to the damping spring 11 inside the outer cylinder 12 through the inner cylinder 9, and the damping spring 11 absorbs the vibration to provide stability for the casing 3, for avoiding the inner tube 9 is not the damping spring 11 is ejecting inside the urceolus 12, so be provided with on the inner tube 9 stopper 10, the diameter of stopper 10 is greater than the bore of urceolus 12, casing 3 is through four standing foot 13 is placed on ground, reduces the area of contact with ground, avoids there being unevenness's the condition on ground, makes the produced vibrations aggravation of first motor 4 during operation has solved the relatively poor problem of novel centrifugal fan during operation stability.
Further, the novel centrifugal fan further comprises a dust collection box 14, the mounting plate 1 is further provided with a mounting cavity 15, and the dust collection box 14 is connected with the mounting plate 1 in a sliding mode and is located in the mounting cavity 15.
In this embodiment, the dust or impurities attached to the impeller 6 may fall into the dust box 14 after leaving the impeller 6 due to centrifugal force when the impeller 6 rotates, and the dust box 14 may be pulled out from the mounting chamber 15, so that the dust or impurities in the dust box 14 may be cleaned.
Further, the novel centrifugal ventilator further comprises a force application handle 16, and the force application handle 16 is fixedly connected with the dust collection box 14 and is positioned on one side far away from the mounting plate 1.
In the present embodiment, the dust box 14 can be pulled out from the mounting cavity 15 of the mounting plate 1 by applying a force to the force applying lever 16.
Further, novel centrifugal fan still includes safety cover 17, safety cover 17 with casing 3 fixed connection, and be located first motor 4 is all around.
In the present embodiment, the protective cover 17 is provided around the first motor 4 in order to prevent foreign objects from affecting the operation of the first motor 4.
Further, the novel centrifugal fan further comprises four anti-skid pads 18, wherein the four anti-skid pads 18 are respectively fixedly connected with the four standing feet 13 and are located on one side far away from the outer barrel 12.
In this embodiment, the anti-slip pad 18 increases the friction force when the standing foot 13 contacts the ground, and prevents the contact surface between the standing foot 13 and the ground from being too smooth and sliding on the ground, thereby affecting the stability.
Further, the novel centrifugal fan further comprises a protective net 19, wherein the protective net 19 is fixedly connected with the machine shell 3 and is positioned at the air inlet 7.
In this embodiment, the protective net 19 can prevent foreign matters from entering the inside of the housing from the air inlet 7 when the first motor 4 drives the first rotating shaft 5 to drive the impeller 6 to rotate, and the first rotating shaft 5 or the impeller 6 is blocked to damage the foreign matters.
Furthermore, the novel centrifugal fan further comprises two handles 20, wherein the two handles 20 are respectively fixedly connected with the casing 3 and are positioned on two sides of the casing 3.
In the present embodiment, the housing 3 can be transported by applying a force to the handle 20.
Further, novel centrifugal fan still includes second motor 21, second pivot 22 and baffle 23, second motor 21 with casing 3 fixed connection to be located and be close to air intake 7 department, second pivot 22 with second motor 21 output end fixed connection, and run through casing 3, baffle 23 with second pivot 22 fixed connection, and be located second pivot 22 is all around.
In this embodiment, the second motor 21 drives the second rotating shaft 22 to drive the baffle 23 to rotate, so that the size of the air outlet 8 of the casing 3 can be changed, and therefore the air outlet speed of the novel centrifugal fan is changed, when the novel centrifugal fan is not used, the second motor 21 drives the baffle 23 on the second rotating shaft 22 to seal the air outlet 8 of the casing 3, and therefore, foreign matters are prevented from falling into the casing 3 from the air outlet 8 and causing damage in the later use process, and the second motor 21 and the first motor 4 are respectively located on two sides of the casing 3, so that the force borne by the casing 3 is more uniform, and the stability of the casing 3 is improved.
Further, the novel centrifugal fan further comprises a bearing 24, one side of the bearing 24 is fixedly connected with the second rotating shaft 22 and is located on one side far away from the second motor 21, and the other side of the bearing 24 is fixedly connected with the casing 3.
In this embodiment, the bearing 24 fixes the side of the second rotating shaft 22 far from the second motor 21 on the housing 3, so that the second rotating shaft 22 is parallel to the horizontal plane during rotation, thereby increasing the stability of the baffle 23.
In the novel centrifugal ventilator of the invention, when the centrifugal ventilator works, the first motor 4 drives the impeller 6 on the first rotating shaft 5 to rotate, when the impeller 6 rotates, the gas between the impellers 6 is subjected to centrifugal force to obtain kinetic energy to be discharged from the periphery of the impeller 6, and the kinetic energy flows to the air outlet 8 through the guidance of the volute-shaped casing 3, so that negative pressure is formed at the central part of the impeller 6, external air flow continuously flows into and is supplemented from the air inlet 7 of the casing 3 due to a negative pressure source, the engagement groove 2 of the mounting plate 1 is engaged with the casing 3 and is in contact with the maximum area of the casing 3, the vibration generated by the first motor 4 during working on the casing 3 can be sufficiently transmitted to the damping spring 11 inside the outer cylinder 12 through the inner cylinder 9, and the damping spring 11 absorbs the vibration to provide stability for the casing 3, for avoiding the inner tube 9 is not the damping spring 11 is ejecting inside the urceolus 12, so be provided with on the inner tube 9 stopper 10, the diameter of stopper 10 is greater than the bore of urceolus 12, casing 3 is through four standing foot 13 is placed on ground, reduces the area of contact with ground, avoids there being unevenness's the condition on ground, makes the produced vibrations aggravation of first motor 4 during operation has solved the relatively poor problem of novel centrifugal fan during operation stability.
While the above disclosure describes a preferred embodiment of the centrifugal fan, it is understood that the scope of the present invention is not limited thereto, and that all or part of the process flow of the above embodiment may be implemented by those skilled in the art, and all equivalent variations and modifications of the invention as described in the claims are still within the scope of the present invention.
Claims (7)
1. A novel centrifugal ventilator is characterized by comprising a mounting plate, a casing, a first motor, a first rotating shaft, a plurality of impellers, an inner cylinder, a limiting block, a plurality of damping springs, an outer cylinder and four standing legs, wherein the mounting plate is provided with a fit groove, the casing is fixedly connected with the mounting plate and positioned at the fit groove, the first motor is fixedly connected with the casing and positioned on the outer side wall of the casing, the first rotating shaft is fixedly connected with the output end of the first motor and penetrates through the casing, the impellers are respectively fixedly connected with the first rotating shaft and positioned on the outer side wall of the first rotating shaft, the casing is provided with an air inlet and an air outlet, the air inlet is positioned on one side far away from the first motor, the air outlet is positioned on one side far away from the mounting plate, the inner cylinder is fixedly connected with the mounting plate and positioned on one side far away from the casing, the stopper with the opposite side fixed connection of inner tube, damping spring with the opposite side fixed connection of stopper, the urceolus with damping spring's opposite side fixed connection, just the urceolus is located damping spring with the stopper is all around, four the station foot respectively with urceolus fixed connection all is located and keeps away from damping spring's one side.
2. The centrifugal fan as claimed in claim 1, further comprising a dust collection box, wherein the mounting plate further has a mounting cavity, and the dust collection box is slidably connected to the mounting plate and located in the mounting cavity.
3. The novel centrifugal ventilator of claim 2 further comprising a force application handle fixedly attached to the dust collection bin and located on a side remote from the mounting plate.
4. The centrifugal fan as claimed in claim 1, further comprising a protective cover fixedly attached to the housing and located around the first motor.
5. The novel centrifugal ventilator according to claim 1, further comprising four anti-slip pads, wherein the four anti-slip pads are fixedly connected with the four standing legs respectively, and are located on one side away from the outer barrel.
6. The novel centrifugal fan as claimed in claim 1, further comprising a protective net, wherein the protective net is fixedly connected with the casing and located at the air inlet.
7. The novel centrifugal fan as claimed in claim 1, further comprising two handles, wherein the two handles are fixedly connected to the casing respectively and located on two sides of the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110417432.2A CN113074125A (en) | 2021-04-19 | 2021-04-19 | Novel centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110417432.2A CN113074125A (en) | 2021-04-19 | 2021-04-19 | Novel centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113074125A true CN113074125A (en) | 2021-07-06 |
Family
ID=76618089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110417432.2A Pending CN113074125A (en) | 2021-04-19 | 2021-04-19 | Novel centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113074125A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011147629A (en) * | 2010-01-22 | 2011-08-04 | Panasonic Corp | Air-jetting device and vacuum cleaner using the same |
| CN209012136U (en) * | 2018-10-17 | 2019-06-21 | 珠海格力电器股份有限公司 | Fan baffle, fan auxiliary assembly and range hood |
| CN209195765U (en) * | 2018-10-22 | 2019-08-02 | 江苏精彩风机制造有限公司 | A kind of centrifugal blower for preventing inner air from flowing back |
| CN209725165U (en) * | 2019-04-16 | 2019-12-03 | 浙江国宇传动科技有限公司 | A kind of speed reducer base with shock-absorbing function |
| CN209781243U (en) * | 2019-03-09 | 2019-12-13 | 江苏高群节能科技有限公司 | three-element inlet blade centrifugal ventilator |
| CN210919589U (en) * | 2019-09-29 | 2020-07-03 | 湖北双剑鼓风机股份有限公司 | Centrifugal fan with dustproof function |
| CN211009201U (en) * | 2019-11-04 | 2020-07-14 | 江苏恒康机电有限公司 | Low-noise centrifugal ventilator |
| CN212003775U (en) * | 2020-04-15 | 2020-11-24 | 苏州众志新环冷却设备有限公司 | Centrifugal fan air inlet protector with air inlet volume adjusting structure |
-
2021
- 2021-04-19 CN CN202110417432.2A patent/CN113074125A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011147629A (en) * | 2010-01-22 | 2011-08-04 | Panasonic Corp | Air-jetting device and vacuum cleaner using the same |
| CN209012136U (en) * | 2018-10-17 | 2019-06-21 | 珠海格力电器股份有限公司 | Fan baffle, fan auxiliary assembly and range hood |
| CN209195765U (en) * | 2018-10-22 | 2019-08-02 | 江苏精彩风机制造有限公司 | A kind of centrifugal blower for preventing inner air from flowing back |
| CN209781243U (en) * | 2019-03-09 | 2019-12-13 | 江苏高群节能科技有限公司 | three-element inlet blade centrifugal ventilator |
| CN209725165U (en) * | 2019-04-16 | 2019-12-03 | 浙江国宇传动科技有限公司 | A kind of speed reducer base with shock-absorbing function |
| CN210919589U (en) * | 2019-09-29 | 2020-07-03 | 湖北双剑鼓风机股份有限公司 | Centrifugal fan with dustproof function |
| CN211009201U (en) * | 2019-11-04 | 2020-07-14 | 江苏恒康机电有限公司 | Low-noise centrifugal ventilator |
| CN212003775U (en) * | 2020-04-15 | 2020-11-24 | 苏州众志新环冷却设备有限公司 | Centrifugal fan air inlet protector with air inlet volume adjusting structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20210706 |