CN111878425A - Impeller, fan and fan control method - Google Patents
Impeller, fan and fan control method Download PDFInfo
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- CN111878425A CN111878425A CN202010591932.3A CN202010591932A CN111878425A CN 111878425 A CN111878425 A CN 111878425A CN 202010591932 A CN202010591932 A CN 202010591932A CN 111878425 A CN111878425 A CN 111878425A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000002347 injection Methods 0.000 claims description 28
- 239000007924 injection Substances 0.000 claims description 28
- 238000004401 flow injection analysis Methods 0.000 claims description 20
- 238000000926 separation method Methods 0.000 abstract description 11
- 238000005507 spraying Methods 0.000 abstract description 4
- 239000007921 spray Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 206010013954 Dysphoria Diseases 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 206010033557 Palpitations Diseases 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000004088 simulation Methods 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
- 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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
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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
- F04D29/663—Sound attenuation
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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
- F04D29/666—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
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an impeller, a fan and a control method of the fan, wherein the impeller comprises a first surrounding ring, a second surrounding ring and a central disc, the central disc is arranged between the first surrounding ring and the second surrounding ring, a plurality of blades which are distributed at intervals along the circumferential direction are arranged between the first surrounding ring and the second surrounding ring, the fan further comprises airflow jet members, the airflow jet members are fixedly connected to the central disc at intervals along the circumferential direction, an airflow channel is formed on the central disc, the air outlet end of the airflow channel is communicated with the airflow jet inlet of the airflow jet member, and the airflow jet outlet of the airflow jet member faces to the leeward side of the blades. The airflow is sprayed to the leeward side of the blade through the airflow spraying component, the boundary layer flow separation phenomenon of the blade is reduced, and therefore noise generated by rotation of the impeller is effectively reduced.
Description
Technical Field
The invention relates to the technical field of cigarette machines, in particular to an impeller, a fan and a fan control method.
Background
The large air volume and the large suction are the primary conditions for consumers to select the range hood, and along with the gradual increase of the air volume of the range hood, the noise generated by the range hood is larger and larger. When the range hood is opened during cooking, the voice, the telephone sound, the doorbell sound and the child sound can not be heard, even the strong noise can cause the adverse reactions of dysphoria, headache, palpitation and the like of housewives and kitchen operators, and the long-term use can cause serious influence on the physical and mental health. Therefore, the noise becomes the technical problem to be solved urgently in the existing range hood. Along with the improvement of the requirements of people on the living quality, users pay more and more attention to the noise parameters of the range hood when purchasing the range hood.
Disclosure of Invention
The present invention is directed to solve one of the problems of the related art to a certain extent, and therefore an object of the present invention is to provide an impeller with low noise generated by rotation of the impeller.
The above purpose is realized by the following technical scheme:
an impeller comprises a first surrounding ring, a second surrounding ring, a center plate and a motor, wherein the center plate is arranged between the first surrounding ring and the second surrounding ring, the center plate is installed on a motor shaft of the motor through an installation hole formed in the center plate, a plurality of blades distributed at intervals in the circumferential direction are arranged between the first surrounding ring and the second surrounding ring, the impeller further comprises a plurality of airflow jet members, the airflow jet members are arranged on the center plate at intervals in the circumferential direction and correspond to the blades, an airflow channel communicated with the airflow jet members is arranged on the center plate, and airflow jet outlets of the airflow jet members face the blades.
As a further improvement of the present invention, the airflow injection member includes a main body, one end of the main body is communicated with the airflow, and at least one airflow injection arm extends from the other end of the main body, and an air outlet of the airflow injection arm faces to a leeward side of the blade.
As a further improvement of the present invention, the air flow injection arm narrows from a direction close to the main body to a direction away from the main body.
As a further improvement of the invention, the air jet arm is arc-shaped.
As a further improvement of the present invention, the airflow injection member is disposed between adjacent ones of the blades.
As a further improvement of the invention, the air flow cover is arranged on the central disc, and the air flow channel is formed between the air flow cover and the central disc.
Another object of the present invention is to provide a fan, wherein the noise generated by the inner impeller is low when the fan is used.
The above purpose is realized by the following technical scheme:
the utility model provides a fan, includes the fan body and the above an impeller, the impeller mounting is in on the fan body, still include controller, wind pressure sensor and air feeder, the controller respectively with air feeder wind pressure sensor electric connection.
As a further improvement of the present invention, the wind pressure sensor is disposed at the wind outlet of the fan body, and the wind pressure sensor is used for detecting the wind pressure at the wind outlet of the fan body.
As a further improvement of the present invention, the air outlet of the air supply device faces the air inlet end of the air flow channel, and the air supply device ejects the air flow into the air flow channel.
As a further improvement of the invention, the controller controls the air supply device to be opened and closed according to the magnitude of the wind pressure detected by the wind pressure sensor, or the controller controls the airflow jet speed of the air supply device according to the magnitude of the wind pressure detected by the wind pressure sensor.
Still another object of the present invention is to provide a control method of a fan, which controls the air jet velocity according to different air pressures.
The above purpose is realized by the following technical scheme:
detecting the wind pressure;
and controlling the air flow jet speed according to the detected air pressure.
As a further improvement of the invention, the step of controlling the airflow injection speed according to the detected wind pressure is specifically as follows:
if the wind pressure is less than or equal to the first preset wind pressure, controlling the jet without air flow;
and if the wind pressure is greater than the first preset wind pressure, controlling the airflow jet speed to be a first preset speed.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the invention provides an impeller which is provided with an air flow injection member, wherein an air flow injection outlet of the air flow injection member faces to the leeward surface of a blade, and air flow is injected to the leeward surface of the blade through the air flow injection member, so that the boundary layer flow separation phenomenon of the blade is reduced, and the noise generated by the rotation of the impeller is effectively reduced.
2. The invention provides a fan, wherein an impeller is arranged in the fan, an airflow jet component is arranged on the impeller, and airflow is jetted to the leeward side of a blade through the airflow jet component, so that the phenomenon of flow separation of a boundary layer of the blade is reduced, and the noise generated by the rotation of the impeller is effectively reduced.
3. The invention provides a control method of a fan, which controls the jet speed of air flow according to different air pressures, and effectively reduces the boundary layer flow separation phenomenon of blades, thereby effectively reducing the noise generated by the rotation of an impeller.
Drawings
FIG. 1 is a schematic structural diagram of an impeller according to an embodiment;
FIG. 2 is an exploded view of an impeller according to an embodiment;
FIG. 3 is a schematic structural view of an air flow ejecting member in the embodiment;
FIG. 4 is another schematic structural view of an air flow ejecting member according to the embodiment;
FIG. 5 is a sectional view of an impeller according to an embodiment;
fig. 6 is a partially enlarged view of a portion a in fig. 5.
FIG. 7 is a flowchart of a control method of a blower according to an embodiment;
fig. 8 is another flowchart of a control method of a fan according to an embodiment.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
The first embodiment is as follows:
referring to fig. 1-6, an impeller 1 of the present invention is shown, including a first surrounding ring 11, a second surrounding ring 12, a central disc 13 and a motor, where the central disc 13 is disposed between the first surrounding ring 11 and the second surrounding ring 12, and the central disc 13 is mounted on a motor shaft of the motor through a mounting hole provided thereon, a plurality of blades 2 circumferentially spaced apart are disposed between the first surrounding ring 11 and the second surrounding ring 12, and a plurality of airflow injection members 3 are further included, the airflow injection members 3 are circumferentially spaced apart on the central disc 13 and are disposed corresponding to the blades 2, an airflow channel 4 communicated with the airflow injection members 3 is disposed on the central disc 13, and an airflow injection outlet of the airflow injection members 3 faces the blades 2. In the prior art, when the smoke machine impeller 1 rotates, a strong pressure gradient is formed on the windward side and the leeward side of the smoke machine impeller 1, and a serious boundary layer fluid separation phenomenon is caused, which is verified by experiments and simulation, and it is found that a lot of flow separation exists on the windward side and the leeward side of the blades 2, so that strong noise is generated in the rotation process of the impeller 1, and the generation of oscillation is also accompanied under certain conditions due to the instability of air flow. The invention provides an impeller 1, which adopts a separation active control technology and is provided with an air flow injection component 3, wherein the air flow injection component 3 is communicated with an air flow channel 4, an air flow injection outlet of the air flow injection component 3 faces to a blade 2, and air flow is injected onto the blade 2 through the air flow injection component 3, so that the boundary layer flow separation phenomenon of the blade 2 is reduced, and the noise generated by the rotation of the impeller 1 is effectively reduced.
The motor is characterized by further comprising a motor, wherein a mounting hole is formed in the middle disc 13, the middle disc 13 is mounted on a motor shaft of the motor through the mounting hole, the motor further comprises an airflow cover 5, the airflow cover 5 is arranged on the middle disc 13 in a covering mode, as shown in fig. 5, the airflow channel 4 is formed between the airflow cover 5 and the middle disc 13, an air inlet end 41 of the airflow channel 4 is formed between the airflow cover 5 and the motor shaft of the motor, and an air outlet end 42 of the airflow channel 4 is communicated with an airflow injection inlet of the airflow injection component 3.
As shown in fig. 3 and 4, the airflow injection member 3 includes a main body 31, one end of the main body 31 is communicated with the airflow channel 4, and the other end extends at least one airflow injection arm 32, and an air outlet of the airflow injection arm 32 faces the leeward side of the blade 2. The flow injection member 3 is provided with an airflow injection inlet and an airflow injection outlet, the airflow injection inlet is arranged on the main body 31, the air outlet of the airflow channel 4 is communicated with the airflow injection inlet, a cavity is arranged in the main body 31, one end of the airflow injection arm 32 is communicated with the cavity in the main body 31, the other end of the airflow injection arm extends towards the leeward side direction of the blade 2, airflow enters the cavity of the main body 31 of the airflow injection member 3 through the airflow channel 4, and then the airflow is injected to the leeward side of the blade 2 through the airflow injection arm 32, so that the boundary layer flow separation phenomenon of the blade 2 is reduced, and the noise generated by the rotation of the impeller 1 is reduced.
Blade 2 is the arc, air jet arm 32 is the arc, the arc radian of air jet arm 32 with the arc radian phase-match of blade 2, air jet arm 32 is around establishing the leeward side department at blade 2. The airflow spray arm 32 narrows from the direction close to the main body 31 to the direction away from the main body 31, and preferably, the sectional area of the airflow spray arm 32 in the vertical direction narrows from the direction close to the main body 31 to the direction away from the main body 31. The air flow injection member 3 is arranged between the adjacent blades 2, each blade 2 is provided with one air flow injection member 3 for conveying injection air flow to the leeward side, the air flow injection members 3 rotate along with the blades 2, the relative positions of the air flow injection members 3 and the blades 2 are kept unchanged, and the boundary layer flow separation phenomenon of each blade 2 is effectively reduced.
Example two:
the utility model provides a fan, includes fan body and the impeller of embodiment one, the impeller is installed on the fan body, still include controller, wind pressure sensor and air feeder, the controller respectively with air feeder wind pressure sensor electric connection. The wind pressure sensor set up in the air outlet department of fan body, wind pressure sensor is used for detecting the wind pressure size of fan body air outlet department. The air outlet of the air supply device faces the air inlet end of the air flow channel, and the air supply device sprays air flow into the air flow channel. The air supply device comprises a small fan, a pump, an air bottle and the like, in the embodiment, the air supply device is the small fan, an air outlet of the small fan faces to an air inlet end of the air flow channel, air flow jetted from an air outlet of the small fan is jetted out to the air flow channel, and the air flow channel jets out to a leeward side of the blade. The controller is according to the size control that the wind pressure sensor detected the wind pressure the air feeder opens and closes, perhaps the controller is according to the size that the wind pressure sensor detected the wind pressure is right air feeder's air current jet velocity is controlled.
The wind pressure sensor detects the magnitude of a wind pressure value at the wind outlet of the fan of the range hood, and if the detected wind pressure value is smaller than a first preset wind pressure, the controller controls the gas supply device to be closed or controls the gas supply device not to be started; if the detected wind pressure value is larger than the first preset wind pressure, the controller controls the air supply device to start and controls the airflow jet speed of the air supply device.
If the air supply device is in a closed state, when the detected air pressure is smaller than a first preset air pressure, controlling not to start the air supply device; if the air supply device is originally in an opening state, when the detected air pressure is smaller than a first preset air pressure, the air supply device is controlled to be closed.
Example three:
referring to fig. 7, a control method of a fan according to the present invention is applied to the fan in the second embodiment, and the control method includes the following steps:
step S1: detecting the wind pressure;
step S2: and controlling the air flow jet speed according to the detected air pressure.
Wherein step S1: detect the wind pressure size, be provided with the wind pressure sensor in the air outlet department of fan, the wind pressure sensor detects the wind pressure size.
The fan of the range hood has different wind pressures at different rotating speeds, the air flow jet speed of the air supply device is controlled according to different wind pressures, the boundary layer flow separation phenomenon of the blades is effectively reduced, and therefore noise generated by rotation of the impeller is effectively reduced.
Wherein, step S2: the step of controlling the airflow jet speed according to the detected wind pressure is specifically as follows: if the detected wind pressure is less than or equal to the first preset wind pressure, controlling the airless injection; and if the wind pressure is greater than the first preset wind pressure, controlling the airflow jet speed of the air supply device to be a first preset speed. Under the condition that the rotating speed of a fan of the range hood is low and the fan is low, the whole noise condition of the range hood is low, the controller can control the air supply device to have no air flow injection, namely the air flow injection speed of the air supply device is 0, and the air supply device can be controlled to be closed or opened without spraying air flow. The controller controls the air supply device, including controlling the opening or closing of the air supply device according to the detected air pressure, and controlling the airflow jet speed of the air supply device according to the detected air pressure. The airflow sprayed by the air supply device flows into the airflow spraying component through the airflow channel and is sprayed to the lee side of the blade through the airflow spraying component.
In this embodiment, the step of controlling the air jet velocity according to the detected wind pressure specifically is: if the wind pressure is less than or equal to the first preset wind pressure, controlling not to start the air supply device or controlling to close the air supply device; if the wind pressure is greater than the first preset wind pressure and less than or equal to the second preset wind pressure, controlling the airflow jet speed of the air supply device to be a first preset speed; if the wind pressure is greater than the second preset wind pressure and less than or equal to the third preset wind pressure, controlling the airflow jet speed of the air supply device to be a second preset speed; if the wind pressure is greater than the third preset wind pressure and less than or equal to the fourth preset wind pressure, controlling the airflow jet speed of the air supply device to be a third preset speed; if the wind pressure is greater than the fourth preset wind pressure and less than or equal to a fifth preset wind pressure value, controlling the airflow jet speed of the air supply device to be a fourth preset speed; and if the wind pressure is greater than the fifth preset wind pressure, controlling the airflow jet speed of the air supply device to be the fifth preset speed. The first preset air pressure is smaller than the second preset air pressure; the second preset air pressure is smaller than the third preset air pressure; the third preset wind pressure is smaller than the fourth preset wind pressure; the fourth preset wind pressure is smaller than the fifth preset wind pressure. The first preset speed is less than the second preset speed; the second preset speed is less than the third preset speed; the third preset speed is less than the fourth preset speed; the fourth preset speed is less than the fifth preset speed.
For example, when the detected wind pressure is less than or equal to 50Pa, controlling to not start the air supply device, namely the jet speed of the air flow is 0 m/s; when the detected wind pressure is greater than 50Pa and less than or equal to 100Pa, controlling the airflow jet speed of the air supply device to be 1 m/s; when the detected wind pressure is more than 100Pa and less than or equal to 200Pa, controlling the airflow jet speed of the air supply device to be 2 m/s; when the detected wind pressure is more than 200Pa and less than or equal to 300Pa, controlling the airflow jet speed of the air supply device to be 3 m/s; when the detected wind pressure is more than 300Pa and less than or equal to 400Pa, controlling the airflow jet speed of the air supply device to be 4 m/s; and when the detected wind pressure is more than 500Pa, controlling the airflow jet speed of the air supply device to be 5 m/s.
Example four:
referring to fig. 8, a control method of a fan is different from the third embodiment in that, in step S1: before detecting the wind pressure, the method also comprises the step S0: and controlling the wind pressure sensor to be started. At step S2: the method comprises the following steps after controlling the airflow injection speed according to the detected wind pressure, and the step S3 is that: and controlling the wind pressure sensor to be closed and controlling the air supply device to be closed. The intelligent control of the wind pressure sensor and the air supply device is convenient for users to use.
The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.
Claims (12)
1. An impeller comprises a first surrounding ring (11), a second surrounding ring (12), a central disc (13) and a motor, the central disc (13) is arranged between the first surrounding ring (11) and the second surrounding ring (12), and the middle disc (13) is arranged on a motor shaft of the motor through a mounting hole arranged on the middle disc, a plurality of blades (2) which are distributed at intervals along the circumferential direction are arranged between the first surrounding ring (11) and the second surrounding ring (12), it is characterized by also comprising a plurality of airflow injection components (3), wherein the airflow injection components (3) are arranged on the central disc (13) at intervals along the circumferential direction and are arranged corresponding to the blades (2), an air flow channel (4) communicated with the air flow injection component (3) is arranged on the middle disc (13), the air flow injection outlet of the air flow injection member (3) faces the blade (2).
2. An impeller according to claim 1, wherein the air jet member (3) comprises a main body (31), one end of the main body (31) is communicated with the air flow channel (4), and the other end extends out of at least one air jet arm (32), and the air outlet of the air jet arm (32) faces the leeward side of the blade (2).
3. An impeller according to claim 2, characterized in that the air jet arms (32) narrow from close to the body (31) to far from the body (31).
4. An impeller (1) according to claim 2, characterized in that the air jet arms (32) are arc-shaped.
5. An impeller according to claim 1, characterized in that the jet member (3) is arranged between adjacent blades (2).
6. An impeller according to claim 1, further comprising an airflow cover (5), wherein the airflow cover (5) is arranged on the central disc (13), and the airflow channel (4) is formed between the airflow cover (5) and the central disc (13).
7. A fan comprising a fan body and an impeller as claimed in any one of claims 1 to 6, said impeller being mounted on said fan body, further comprising a controller, a wind pressure sensor and a gas supply device, said controller being electrically connected to said gas supply device and said wind pressure sensor, respectively.
8. The fan as claimed in claim 7, wherein the wind pressure sensor is disposed at the outlet of the fan body, and the wind pressure sensor is configured to detect a wind pressure at the outlet of the fan body.
9. The fan as claimed in claim 7, wherein the air outlet of the air supply device faces the air inlet end of the air flow channel, and the air supply device ejects the air flow into the air flow channel.
10. The fan as claimed in claim 7, wherein the controller controls the air supply device to be turned on and off according to the magnitude of the wind pressure detected by the wind pressure sensor, or the controller controls the air jet velocity of the air supply device according to the magnitude of the wind pressure detected by the wind pressure sensor.
11. A method for controlling a fan, which is applied to the fan of any one of claims 7 to 10, the method comprising the steps of:
detecting the wind pressure;
and controlling the air flow jet speed according to the detected air pressure.
12. The method for controlling a fan according to claim 11, wherein the step of controlling the airflow ejection speed according to the detected wind pressure specifically comprises:
if the wind pressure is less than or equal to the first preset wind pressure, controlling the jet without air flow;
and if the wind pressure is greater than the first preset wind pressure, controlling the airflow jet speed to be a first preset speed.
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| CN202010591932.3A CN111878425B (en) | 2020-06-24 | 2020-06-24 | Impeller, fan and fan control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010591932.3A CN111878425B (en) | 2020-06-24 | 2020-06-24 | Impeller, fan and fan control method |
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| CN111878425A true CN111878425A (en) | 2020-11-03 |
| CN111878425B CN111878425B (en) | 2022-06-17 |
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| CN101334004A (en) * | 2007-06-25 | 2008-12-31 | 通用电气公司 | Power loss reduction in turbulent wind for a wind turbine using localized sensing and control |
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| CN110630540A (en) * | 2018-06-21 | 2019-12-31 | 夏普株式会社 | Electric blower and electric dust collector |
| TWM595694U (en) * | 2020-03-18 | 2020-05-21 | 奇鋐科技股份有限公司 | Fan rotor jet structure |
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| JP2017150693A (en) * | 2016-02-22 | 2017-08-31 | 三菱電機株式会社 | Air blowing device |
| CN106439957A (en) * | 2016-08-28 | 2017-02-22 | 杭州老板电器股份有限公司 | Side smoking machine with double air inlet air flues |
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| CN207920910U (en) * | 2017-02-17 | 2018-09-28 | 日本电产株式会社 | Air-supply arrangement |
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| CN111878425B (en) | 2022-06-17 |
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