CN116292406A - Fan subassembly and electrical apparatus - Google Patents
Fan subassembly and electrical apparatus Download PDFInfo
- Publication number
- CN116292406A CN116292406A CN202211151117.0A CN202211151117A CN116292406A CN 116292406 A CN116292406 A CN 116292406A CN 202211151117 A CN202211151117 A CN 202211151117A CN 116292406 A CN116292406 A CN 116292406A
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- China
- Prior art keywords
- control
- volute
- fan
- plate
- fan assembly
- 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
Links
- 230000007246 mechanism Effects 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 11
- 238000007493 shaping process Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- F04D29/40—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
- F04D29/422—Discharge tongues
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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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/462—Fluid-guiding means, e.g. diffusers adjustable 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
- F04D29/66—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
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- 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 relates to a fan assembly and an electric appliance, and relates to the technical field of fans, the fan assembly comprises a volute and a fan blade, the volute comprises a volute body and a volute tongue, the fan blade is arranged in the volute body, a gap adjusting device used for adjusting the gap between the volute tongue and the fan blade is arranged on the volute body, the adjusting device can improve the fan efficiency or reduce noise by adjusting the gap of the volute tongue, and the problems of efficiency and noise shaping between the volute and other fan assemblies can be solved, so that different use requirements can be matched.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a fan assembly and an electric appliance comprising the fan assembly.
Background
When designing the volute of the fan in the prior art, the volute tongue clearance and the volute tongue type are usually determined according to design requirements and fan blade parameters, and then the efficiency and noise of the fan assembly are also determined. The volute designed based on the design method has the advantage that the volute tongue clearance is not adjustable, and is only suitable for specific use requirements.
In view of the foregoing, there is a need for a fan assembly that can flexibly adjust the volute tongue clearance according to different needs.
Disclosure of Invention
The invention provides a fan assembly and a household appliance comprising the same, which are used for adjusting the depth of a volute tongue in the working of a fan, and can achieve the effects of reducing noise or improving efficiency according to requirements so as to adapt to various different operation conditions.
The invention provides a fan assembly, which comprises fan blades, a volute body and a volute tongue, wherein the fan blades are arranged in the volute body, an adjusting device is arranged on the volute body, and the adjusting device is used for adjusting a gap between the volute tongue and the fan blades.
According to further optimization of the technical scheme, the adjusting device comprises an adjusting plate and a control mechanism, the adjusting plate is connected with the volute casing body through the control mechanism, and the control mechanism is used for controlling the adjusting plate to move in the extending direction of the volute tongue.
According to further optimization of the technical scheme, the control mechanism comprises a control rod and a control rack, the control rod is arranged on the volute body, and a gear matched with the control rack is sleeved on the control rod.
According to the technical scheme, the number of the control mechanisms is one or more.
According to further optimization of the technical scheme, a sealing mechanism is arranged between the adjusting device and the volute body and used for preventing air leakage of the adjusting device.
According to further optimization of the technical scheme, the adjusting plate comprises a control plate and a guide plate, the adjusting plate is a V-shaped plate formed by integrally connecting the control plate and the guide plate, and the control mechanism is connected with the control plate.
According to further optimization of the technical scheme, one end of the control board is provided with the extension board, and the control rack is arranged on the extension board.
According to further optimization of the technical scheme, the front end of the guide plate is provided with an angle adjusting device.
According to the technical scheme, the gap between the volute tongue and the fan blade is maximally 12.5% of the diameter of the fan blade, and minimally 6.4% of the diameter of the fan blade.
An appliance comprising a fan assembly as claimed in any preceding claim.
Compared with the prior art, the invention has the advantages that the efficiency of the fan is improved or the noise is reduced by adjusting the clearance of the volute tongue, and the problems of efficiency and noise shaping between the volute and other components of the fan can be solved, thereby matching different use requirements.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of a fan assembly in an embodiment of the present invention;
FIG. 2 is a schematic view of an exploded construction of an adjusting device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing a driving mode of a control mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a fan assembly in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of the structure of the embodiment of the present invention when the gap between the volute tongue and the fan blade is maximum;
fig. 6 is a schematic structural view of the embodiment of the present invention when the gap between the volute tongue and the fan blade is minimum.
Reference numerals:
1-a volute body; 2-fan blades; 3-volute tongue; 31-control panel; 32-a deflector; 33-an extension plate; 4-sealing the box; 5-a control mechanism; 51-a control lever; 511-a control knob; 512-gear; 52-controlling a rack; 53-mount.
Detailed Description
The invention will be further described with reference to fig. 1-4.
As shown in fig. 1, the invention provides a fan assembly, which comprises a volute body 1, a volute tongue 3 and a fan blade 2, wherein the fan blade 2 is installed in the volute body 1, an adjusting device is arranged on the volute body 1 and is used for adjusting a gap between the volute tongue 3 and the fan blade 2, and the fan efficiency is improved or the noise is reduced by adjusting the gap between the volute tongue 3 through the adjusting device, so that the problems of efficiency and noise shaping between the volute and other fan assemblies can be solved, and different use requirements can be matched.
In one specific embodiment, the adjusting device is connected with the volute body 1 through a sealing mechanism, and the adjusting device comprises an adjusting plate and a control mechanism 5, and the adjusting plate adjusts the clearance of the volute tongue 3 under the action of the control mechanism 5. Preferably, as shown in fig. 1, 2 and 3, the control mechanism 5 includes a control rod 51 and a control rack 52 disposed on the adjusting plate, and the specific sealing mechanism may be designed as a sealing box 4, where the control rod 51 is mounted on the sealing mechanism through a mounting seat 53, and a control knob 511 is disposed at an outer end of the control rod 51, and a gear 512 matched with the control rack 52 is sleeved on an end of the control rod 51 extending into the sealing mechanism. And the adjusting plate of the adjusting device is arranged in the sealing mechanism. When in use, the control knob 511 is rotated to drive the control rod 51 to rotate, so that the gear 512 drives the adjusting plate to perform telescopic movement, namely, the flat tongue, the short tongue, the deep tongue and the sharp tongue of the fan volute tongue are changed by controlling the adjusting plate.
As shown in fig. 2 and 3, the adjusting plate in the technical solution of the present invention may be designed as a V-shaped plate, and specifically includes a control plate 31 and a deflector 32, where the control plate 31 is disposed in the seal box 4, and for installation and maintenance of the solution, the seal box may be designed as two parts, one part is directly connected to the volute body 1, and the other part is detachably disposed at one end, so as to be sleeved on the extension plate 33 to prevent air leakage at the position of the extension plate. An extension plate 33 is arranged at one end of the control plate 31, and the control rack 52 is arranged on the extension plate 33, so that the design is convenient to control. The control mechanism 5 on the control board 31 can be arranged one or a plurality of control mechanisms, and particularly when the direction of the volute tongue 3 parallel to the fan blade 2 is longer, the control mechanism 5 can be respectively arranged at two ends of the control board 31, so that the control is lighter. In order to better improve the air outlet efficiency of the fan, the guide plate can be arranged to be an angle-adjustable plate, namely, the guide plate 32 is designed to be of a split structure, the free end of the front part is connected with the guide plate body through the angle adjustable through the rotating shaft, so that the whole angle of the guide plate can be adjusted according to the air outlet quantity, the air pressure of the air outlet is reduced, and the air outlet efficiency is further improved.
Preferably, as shown in fig. 4, the distance L0 that the adjusting plate can move is one fourth of the diameter D of the fan blade 2, and the position of the volute tongue 3 is adjusted by the adjusting plate, so that the clearance of the volute tongue 3 can be changed between 6%D and 12% D, where D is the impeller diameter of the multi-wing centrifugal fan blade 2. Noise is reduced or efficiency is improved by changing the gap of the volute tongue 3, different use requirements can be met, the use range of the volute fan assembly is enlarged, and the effect of reducing cost is achieved.
An electric appliance comprises the fan assembly in any embodiment, and can be an air conditioner, a range hood and other household appliances or an industrial electric appliance with the fan assembly.
In order to facilitate the inspector to understand the technical scheme, as shown in fig. 4, in the prior art, the volute molded lines are usually drawn by adopting a non-equidistant square method, and by adopting the method, the diameter D of the multi-wing centrifugal fan blade 2 and the opening A of the volute are firstly determined, and then the opening of each section is calculated:
wherein q is the calculated flow; is the width of the volute; b is the diameter of the fan blade 2; c' 2u Is the tangential velocity of the airflow after it leaves the blade.
The side lengths a, b, c, d of the four small squares are:
after the side lengths of the four squares are determined, the vertexes of the four squares can be used as the centers to draw arcs, and the radiuses R of the four arcs are equal to the radius R of the four arcs 1 、R 2 、R 3 、R 4 The method comprises the following steps:
R 1 ＝D+A-a
R 3 ＝D+A π -c
wherein R is 1 Is the radius of the arc segment vw, R 2 Is the radius of the arc section wx, R 3 Radius of the arc segment xy, R 4 The radius of the arc section yz is the radius, and four sections of arcs jointly form the molded line of the volute body. In this technical solution, the uv section is a movement path of the volute tongue 3, its length is a range of adjustable of the volute tongue 3, its molded line is a straight line, or may be designed into an arc line with the same radius shape as that of the arc section vw, and when the arc line is designed, the included angle between the control board 31 and the tangent line of v point is 20 degrees. The control plate 31 is connected with the top end of the outlet diffuser section through the volute tongue 3, the top end of the volute tongue 3 is in a round-corner structure, and the preferred round-corner radius R5 of the volute tongue is 3.75% D.
As shown in fig. 5 and 6, when the control board 31 moves to the maximum distance along the control slot toward the fan blade 2, the gap L1 between the volute tongue 3 is at the minimum value of 6.4% d. The relation between the length H1 of the outlet diffuser close to the volute tongue 3 and the opening A of the volute is 109.4 percent A, the optimal working efficiency can be achieved according to the performance of the volute body 1 through the control of the parameter, the noise can be controlled within 70 decibels, and the surrounding working environment is not seriously influenced. When the control plate 31 moves to the maximum distance along the tooth slot in the outlet direction, the gap L2 of the volute tongue 3 is the largest at this time, which is 12.5% d. The length H2 of the outlet diffuser portion near the volute tongue 3 is 79.1% a, and the seal case 4 provides a counter force to the volute tongue 3, which minimizes noise while ensuring relatively good operating efficiency. Therefore, the longest distance of the movable volute tongue 3 in the sealing box 4 is 25% D, the change interval of the clearance of the volute tongue 3 is (6.4% D,12.5% D), the change interval of the length of the outlet diffuser in the volute is (79.1% A,109.4% A), and the clearance interval is adjusted by controlling the volute tongue 3.
The driving mode of the double-inlet centrifugal fan and the single-side knob is also applicable to the driving mode of the single-inlet centrifugal fan and the double-side knob, and the centrifugal fan and the air conditioning system applying the driving mode are all within the protection scope of the invention.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. The fan assembly comprises a fan blade, a volute body and a volute tongue, wherein the fan blade is arranged in the volute body.
2. The fan assembly of claim 1, wherein: the adjusting device comprises an adjusting plate and a control mechanism, wherein the adjusting plate is connected with the volute body through the control mechanism, and the control mechanism is used for controlling the adjusting plate to move in the extending direction of the volute tongue.
3. The fan assembly of claim 2, wherein: the control mechanism comprises a control rod and a control rack, wherein the control rod is installed on the volute body, and a gear matched with the control rack is sleeved on the control rod.
4. The fan assembly of claim 2, wherein: the number of the control mechanisms is one or more.
5. The fan assembly of claim 1, wherein a sealing mechanism is disposed between the conditioner and the volute body, the sealing mechanism being configured to prevent air leakage from the conditioner.
6. The fan assembly of any of claims 3-5, wherein: the adjusting plate comprises a control plate and a guide plate, the adjusting plate is a V-shaped plate formed by integrally connecting the control plate and the guide plate, and the control mechanism is connected with the control plate.
7. The fan assembly of claim 5, wherein: one end of the control board is provided with an extension board, and the control rack is arranged on the extension board.
8. The fan assembly of claim 5, wherein: the front end of the guide plate is provided with an angle adjusting device.
9. The fan assembly of claim 5, wherein: the gap between the volute tongue and the fan blade is maximally 12.5% of the diameter of the fan blade, and minimally 6.4% of the diameter of the fan blade.
10. An electrical appliance comprising the fan assembly of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211151117.0A CN116292406A (en) | 2022-09-21 | 2022-09-21 | Fan subassembly and electrical apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211151117.0A CN116292406A (en) | 2022-09-21 | 2022-09-21 | Fan subassembly and electrical apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116292406A true CN116292406A (en) | 2023-06-23 |
Family
ID=86815466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211151117.0A Pending CN116292406A (en) | 2022-09-21 | 2022-09-21 | Fan subassembly and electrical apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116292406A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116753182A (en) * | 2023-07-10 | 2023-09-15 | 无锡精恩风机有限公司 | Lithium battery desorption fan stable in operation |
-
2022
- 2022-09-21 CN CN202211151117.0A patent/CN116292406A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116753182A (en) * | 2023-07-10 | 2023-09-15 | 无锡精恩风机有限公司 | Lithium battery desorption fan stable in operation |
| CN116753182B (en) * | 2023-07-10 | 2024-02-23 | 无锡精恩风机有限公司 | Lithium battery desorption fan stable in operation |
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