CN114320991A - Air volume adjusting device and method for alternating-current fan and air draft equipment - Google Patents
Air volume adjusting device and method for alternating-current fan and air draft equipment Download PDFInfo
- Publication number
- CN114320991A CN114320991A CN202210152969.5A CN202210152969A CN114320991A CN 114320991 A CN114320991 A CN 114320991A CN 202210152969 A CN202210152969 A CN 202210152969A CN 114320991 A CN114320991 A CN 114320991A
- Authority
- CN
- China
- Prior art keywords
- air volume
- semiconductor switch
- gear
- controller
- air
- 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
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000004065 semiconductor Substances 0.000 claims abstract description 145
- 238000004891 communication Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 abstract description 32
- 238000009434 installation Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 9
- 230000033228 biological regulation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Landscapes
- Ventilation (AREA)
Abstract
The application provides an air volume adjusting device, an air volume adjusting method and air draft equipment of an alternating current fan, comprising: a first controller and at least one semiconductor switch; for any semiconductor switch, a first end of the semiconductor switch is connected to a fan tap included in a first end of the alternating current fan, and a second end of the semiconductor switch is connected to a first sub-end included in a first end of the first controller; the second end of the first controller, the third end of the semiconductor switch and the second end of the alternating current fan are respectively connected to the power supply circuit. Thus, by setting a primary air quantity gear and a secondary air quantity gear refined under the primary air quantity gear, careful adjustment of air quantity can be realized, and individualized adjustment requirements of different users can be fully met; the noise generated by the air draft equipment is changed by adjusting the air volume, a resonance point is not required to be calibrated in advance, redundant components are not required to be installed, the noise interference is avoided, the difference of different installation environments is adapted, the noise reduction cost is low, and the noise reduction mode is reliable.
Description
Technical Field
The application relates to the technical field of air draft equipment, in particular to an air volume adjusting device and an air volume adjusting method of an alternating current fan and air draft equipment.
Background
At present, the air draft equipment provides convenience for a majority of users in various aspects based on the air draft function of the air draft equipment, for example, a range hood can reduce oil smoke generated in the cooking process, and a ventilation fan can exhaust indoor peculiar smell gas; the larger the air quantity of the existing air draft equipment in operation is, the larger the generated noise is, and the life experience of people is seriously influenced by the noise. In order to reduce adverse effects caused by noise, noise reduction treatment needs to be carried out on the air draft equipment.
The existing noise reduction method detects and analyzes indoor noise, and generates a noise reduction signal with the same amplitude and opposite phase with the noise to offset the noise, thereby achieving the noise reduction effect. However, this noise reduction method does not reduce the generation of noise at the sound source, and even generates new noise, and the noise reduction effect is poor. The noise reduction method is characterized in that a preset noise threshold value is calibrated for the alternating current fan according to a noise value generated when the alternating current fan generates a resonance phenomenon. When the noise-reducing device is used, when the noise in a room reaches a preset noise threshold value, the rotating speed of the motor is adjusted to reduce the noise. However, the ac fan usually has only one resonance point, and the resonance point and the generated noise value are different in different installation environments, and the noise acceptance degree is different for different users. Therefore, the way of calibrating the noise threshold in advance cannot adapt to different installation environments, does not consider the noise acceptance of different users, and cannot achieve the customized effect for each user. In addition, the two noise reduction methods need to install components such as a sound collection device to detect noise, so that the noise reduction cost of the alternating current fan in the air draft equipment is high, the alternating current fan is inconvenient to install, and the alternating current fan is easily interfered by external noise to cause misjudgment.
Disclosure of Invention
In view of this, an object of the present application is to provide an air volume adjusting device, an air volume adjusting method, and an air draft device of an ac fan, wherein a first-level air volume gear and a second-level air volume gear refined under the first-level air volume gear are set, and the air volume provided by the air draft device is adjusted according to the selected air volume gear, so that the careful adjustment of the air volume can be realized, and the individualized adjustment requirements of different users can be fully satisfied; the noise generated by the air draft equipment is changed by adjusting the air volume, a resonance point is not required to be calibrated in advance, redundant components are not required to be installed, the noise interference is avoided, the difference of different installation environments is adapted, the noise reduction cost is low, and the noise reduction mode is reliable.
The embodiment of the application provides an air volume adjusting device of an alternating current fan, which comprises a first controller and at least one semiconductor switch;
for any one of at least one semiconductor switch, a first terminal of the semiconductor switch is connected to one of a plurality of fan taps included in a first terminal of the alternating-current fan, and a second terminal of the semiconductor switch is connected to a first sub-terminal included in a first terminal of the first controller; the second end of the first controller, the third end of the semiconductor switch and the second end of the alternating current fan are respectively connected to a power supply circuit;
the first controller responds to the currently selected air volume gear, and sends a switch control signal corresponding to the air volume indicated by the air volume gear to a target semiconductor switch in at least one semiconductor switch to control the target semiconductor switch to be switched on and off in a circulating mode, so that the power supply circuit supplies power to the alternating current fan in a circulating switching mode through a target fan tap corresponding to the target semiconductor switch, and the alternating current fan generates the air volume indicated by the air volume gear when rotating under the power supply of the power supply circuit;
the air quantity gears comprise a primary air quantity gear and a secondary air quantity gear; the secondary air volume gear is a subdivision gear under the primary air volume gear; the target fan tap corresponds to the primary air quantity gear; and in the process of circularly switching the target semiconductor switch between on and off, the ratio of the on time and the off time of the target semiconductor switch corresponds to the secondary air volume gear.
Further, the first controller includes: a transmitting circuit and a zero-crossing detecting circuit;
the first end of the transmitting circuit is used as a plurality of first sub-ends included by the first end of the first controller and is respectively connected to the second ends of the semiconductor switches in one-to-one correspondence, the second end of the transmitting circuit is connected with the first end of the zero-crossing detecting circuit, and the second end of the zero-crossing detecting circuit is used as the second end of the first controller and is connected to the power supply circuit;
the zero-crossing detection circuit is used for sending a zero-crossing signal to the sending circuit at the zero-crossing moment of the power supply voltage provided by the power supply circuit;
and when the zero-crossing signal is taken as a time reference and a preset time is counted, the sending circuit is used for sending the switch control signal corresponding to the air volume indicated by the air volume gear to the target semiconductor switch.
Further, the air volume adjusting device also comprises at least one photoelectric coupler; the at least one photoelectric coupler corresponds to the at least one semiconductor switch one by one; a first end of each of the photo-couplers is connected to the power circuit;
for any one semiconductor switch in at least one semiconductor switch, the second end of the semiconductor switch is connected to the second end of the photoelectric coupler corresponding to the semiconductor switch, and the third end of the photoelectric coupler corresponding to the semiconductor switch is connected to a first sub-end included in the first end of the first controller;
and the photoelectric coupler is used for controlling the semiconductor switch according to the switch control signal sent by the first controller, so that the first controller is isolated from the semiconductor switch.
Further, the air volume adjusting device further includes: a second controller and an operation panel;
the third end of the transmitting circuit is used as the third end of the first controller and is connected to the first end of the second controller; the second end of the second controller is connected with the first end of the operation panel; the third end of the second controller and the second end of the operation panel are respectively connected to the power supply circuit;
the operation panel is used for sending the received air quantity gear adjusting information of the alternating-current fan to the second controller;
and the second controller is used for sending the air volume gear identified from the received air volume gear adjusting information to the first controller.
Further, the operation panel comprises one or more of a knob, a key, a touch slide bar, a gesture recognition device, a voice recognition device and a wireless communication device.
Further, the air volume adjusting device also comprises a display;
a first terminal of the display is connected to a fourth terminal of the second controller, and a second terminal of the display is connected to the power supply circuit;
and the display is used for displaying the working state of the air draft equipment provided with the air volume adjusting device.
Furthermore, the air volume adjusting device also comprises a lighting circuit;
and the first end of the lighting circuit is connected with the fourth end of the first controller, and the second end of the lighting circuit is connected with the power supply circuit.
Further, the semiconductor switch includes: a bidirectional thyristor switch.
The embodiment of the application also provides an air volume adjusting method of the alternating current fan, the air volume adjusting method is applied to an air volume adjusting device, and the air volume adjusting device comprises a first controller and at least one semiconductor switch;
for any one of at least one semiconductor switch, a first terminal of the semiconductor switch is connected to one of a plurality of fan taps included in a first terminal of the alternating-current fan, and a second terminal of the semiconductor switch is connected to a first sub-terminal included in a first terminal of the first controller; the second end of the first controller, the third end of the semiconductor switch and the second end of the alternating current fan are respectively connected to a power supply circuit;
the first controller responds to the currently selected air volume gear, and sends a switch control signal corresponding to the air volume indicated by the air volume gear to a target semiconductor switch in at least one semiconductor switch to control the target semiconductor switch to be switched on and off in a circulating mode, so that the power supply circuit supplies power to the alternating current fan in a circulating switching mode through a target fan tap corresponding to the target semiconductor switch, and the alternating current fan generates the air volume indicated by the air volume gear when rotating under the power supply of the power supply circuit;
the air quantity gears comprise a primary air quantity gear and a secondary air quantity gear; the secondary air volume gear is a subdivision gear under the primary air volume gear; the target fan tap corresponds to the primary air quantity gear; and in the process of circularly switching the target semiconductor switch between on and off, the ratio of the on time and the off time of the target semiconductor switch corresponds to the secondary air volume gear.
The embodiment of the application further provides an air extracting device, air extracting device includes: the exhaust equipment comprises an exhaust equipment body and an air volume adjusting device arranged in the exhaust equipment body and used in any one of the above embodiments.
The air volume adjusting device comprises a first controller and at least one semiconductor switch;
for any one of at least one semiconductor switch, a first terminal of the semiconductor switch is connected to one of a plurality of fan taps included in a first terminal of the alternating-current fan, and a second terminal of the semiconductor switch is connected to a first sub-terminal included in a first terminal of the first controller; the second end of the first controller, the third end of the semiconductor switch and the second end of the alternating current fan are respectively connected to a power supply circuit;
the first controller responds to the currently selected air volume gear, and sends a switch control signal corresponding to the air volume indicated by the air volume gear to a target semiconductor switch in at least one semiconductor switch to control the target semiconductor switch to be switched on and off in a circulating mode, so that the power supply circuit supplies power to the alternating current fan in a circulating switching mode through a target fan tap corresponding to the target semiconductor switch, and the alternating current fan generates the air volume indicated by the air volume gear when rotating under the power supply of the power supply circuit;
the air quantity gears comprise a primary air quantity gear and a secondary air quantity gear; the secondary air volume gear is a subdivision gear under the primary air volume gear; the target fan tap corresponds to the primary air quantity gear; and in the process of circularly switching the target semiconductor switch between on and off, the ratio of the on time and the off time of the target semiconductor switch corresponds to the secondary air volume gear.
Therefore, compared with a noise reduction mode for detecting noise and generating a noise reduction signal in the prior art or a mode for reducing the noise when the detected noise reaches a preset noise threshold value, the method and the device have the advantages that the air quantity provided by the air draft equipment is adjusted according to the selected air quantity gear by setting the primary air quantity gear and the secondary air quantity gear refined under the primary air quantity gear, so that the careful adjustment of the air quantity can be realized, and the individual adjustment requirements of different users are fully met; the noise generated by the air draft equipment is changed by adjusting the air volume, a resonance point is not required to be calibrated in advance, redundant components are not required to be installed, the noise interference is avoided, the difference of different installation environments is adapted, the noise reduction cost is low, and the noise reduction mode is reliable.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 shows one of the schematic structural diagrams of an air volume adjusting device of an ac fan according to an embodiment of the present application;
fig. 2 shows a second schematic structural diagram of an air volume adjusting device of an ac fan according to an embodiment of the present application;
fig. 3 shows a third schematic structural diagram of an air volume adjusting device of an ac fan according to an embodiment of the present application;
fig. 4 shows a schematic structural diagram of an air draft device provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. Every other embodiment that can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present application falls within the protection scope of the present application.
It is found through research that the existing noise reduction method mainly generates a noise reduction signal according to the detected noise to counteract the noise, or performs noise reduction when the detected noise reaches a noise threshold value calibrated in advance according to a resonance point. In the methods, components such as a sound collecting device and the like are required to be installed to detect noise, so that the range hood is high in cost and inconvenient to install, and is easy to be interfered by external noise to cause misjudgment; the noise acceptance of different users is not considered, and the customization effect of each user cannot be achieved.
Based on this, the embodiment of the application provides an air volume adjusting device, an air volume adjusting method and air draft equipment of an alternating current fan, and by setting a primary air volume gear and a secondary air volume gear refined under the primary air volume gear, the air volume provided by the air draft equipment is adjusted according to the selected air volume gear, so that the careful adjustment of the air volume can be realized, and the individual adjustment requirements of different users can be fully met; the noise generated by the air draft equipment is changed by adjusting the air volume, a resonance point is not required to be calibrated in advance, redundant components are not required to be installed, the noise interference is avoided, the difference of different installation environments is adapted, the noise reduction cost is low, and the noise reduction mode is reliable.
The following takes an extractor hood as an example, and specifically describes an air volume adjusting device, an air volume adjusting method and an extractor hood of an ac fan provided by the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an air volume adjusting device of an ac fan 2 according to an embodiment of the present disclosure. As shown in fig. 1, an air volume adjusting device provided in an embodiment of the present application includes: a first controller 1 and at least one semiconductor switch a1, … …, An, wherein n is a positive integer greater than or equal to 1.
For any one semiconductor switch Ai (i is a positive integer greater than or equal to 1) of at least one semiconductor switch a1, … …, An, a first terminal of the semiconductor switch Ai is connected to one of a plurality of fan taps included in a first terminal of the ac fan 2, and a second terminal of the semiconductor switch Ai is connected to a first sub-terminal included in a first terminal of the first controller 1; the second end of the first controller 1, the third end of the semiconductor switch Ai and the second end of the alternating current fan 2 are respectively connected to a power supply circuit 3; in fig. 1, "L" denotes live line and "N" denotes neutral line.
Here, the semiconductor switch Ai includes a triac.
The first controller 1 sends a switch control signal corresponding to the air volume indicated by the air volume shift to a target semiconductor switch Aj (j is a positive integer greater than or equal to 1) in at least one semiconductor switch a1, … …, An in response to the currently selected air volume shift, so as to control the target semiconductor switch Aj to cyclically switch between on and off, so that the power supply circuit 3 cyclically switches and supplies power to the alternating current fan 2 via a target fan tap corresponding to the target semiconductor switch Aj, and the alternating current fan 2 generates the air volume indicated by the air volume shift when rotating under the power supply of the power supply circuit 3.
Specifically, as shown in fig. 1, for any one semiconductor switch Ai of at least one semiconductor switch a1, … …, An, the semiconductor switch Ai is used for controlling the on/off of a circuit of a power supply circuit 3 for supplying power to An alternating current fan 2 through a fan tap connected with the semiconductor switch Ai; therefore, when the target semiconductor switch Aj is turned on, the power supply circuit is turned on, and the power supply circuit 3 can supply power to the ac fan 2 via the target fan tap corresponding to the target semiconductor switch Aj; when the target semiconductor switch Aj is turned off, the power supply circuit is not connected, and the power supply circuit 3 cannot supply power to the alternating current fan 2 through a target fan tap corresponding to the target semiconductor switch Aj; in this way, the power supply circuit 3 realizes cyclically switched power supply to the ac fan 2.
It should be noted that the air volume gears include a primary air volume gear and a secondary air volume gear; the secondary air volume gear is a subdivision gear under the primary air volume gear; different air volume gears indicate different air volumes provided by the range hood. As an example, the primary air volume gear may include a weak wind gear, a strong wind gear, and a stir-fry gear; the second-level air quantity gear can be a stir-frying weak gear, a stir-frying middle gear and a stir-frying strong gear.
And the target fan tap corresponds to the primary air quantity gear, and the target semiconductor switch Aj is connected with the target fan tap. Corresponding to the above example, when the primary air volume gear includes the weak wind gear, the strong wind gear, and the stir-fry gear, the plurality of fan taps included in the first end of the alternating-current fan 2 are the weak wind tap, the strong wind tap, and the stir-fry tap, respectively. According to the principle of tap speed regulation of the alternating current fan 2, when the power circuit 3 supplies power to the alternating current fan 2 through different fan taps, the rotating speeds of the alternating current fan 2 are different, and the alternating current fan 2 in the range hood can generate air volume indicated by different primary air volume gears. For example, if the currently selected primary air volume gear is a strong wind gear, the target fan tap is a strong wind tap, the target semiconductor switch Aj corresponding to the strong wind tap is turned on, the semiconductor switches Ai corresponding to the other taps are all turned off, the power supply circuit 3 supplies power to the ac fan 2 through the strong wind tap, and the range hood can generate the air volume indicated by the strong wind gear.
And in the process of circularly switching the target semiconductor switch Aj between on and off, the ratio of the on time to the off time of the target semiconductor switch Aj corresponds to the secondary air volume gear. Specifically, the larger the ratio between the on-time and the off-time of the target semiconductor switch Aj, i.e., the longer the on-time and the shorter the off-time, the longer the time for the power supply circuit 3 to supply power to the ac fan 2 via the target fan tap, the larger the effective value of the input voltage at the target fan tap, and the larger the rotational speed of the ac fan 2 is adjusted. For example, the ratio of the on time to the off time of the target semiconductor switch Aj in the stir-fry middle gear may be set to 1.8: 1, the ratio of the on time to the off time of the target semiconductor switch Aj under the weak gear of the quick frying is 1.5: 1; like this, can realize the careful regulation to the amount of wind of exchanging fan 2, range hood can produce the amount of wind that different second grade amount of wind gears instructed.
Here, the air volume gear may be selected by the user, or may be selected by the range hood according to a set program, and the application is not limited herein.
Taking user selection as an example, a user can directly select primary air volume gears, each primary air volume gear corresponds to a default secondary air volume gear, for example, when the user selects a strong wind gear, the range hood defaults to provide the air volume corresponding to the strong wind gear under the strong wind gear; therefore, the air quantity gear is adjusted from the stir-frying gear to the strong air gear by the user, the air quantity provided by the range hood is reduced, and the noise generated by the range hood is reduced accordingly.
A user can enter a noise regulation mode, so that further fine regulation is carried out in a secondary air volume gear corresponding to a primary air volume gear, for example, the noise is slightly larger, but the user can enter the noise regulation mode when wanting to maintain relatively larger air volume and not regulate the primary air volume gear, the secondary air volume gear is regulated from a strong wind middle gear to a strong wind weak gear, and the noise is reduced under the condition of not changing the air volume; in addition, if the user has good acceptance of noise, the second-level air quantity gear can be adjusted from the strong wind middle gear to the strong wind strong gear, so that a better smoking effect is achieved.
Like this, through setting up the second grade amount of wind gear of subdivision under the first order amount of wind gear, can realize more careful air regulation, and then adjust the noise that range hood produced, satisfy more individualized demands.
Furthermore, no matter where the resonance phenomenon of the range hood occurs, the resonance point can be avoided by adjusting the air volume gear, so that the overhigh noise generated by resonance is avoided, the calibration of a noise threshold value is not required to be carried out in advance when the range hood leaves a factory, the range hood can adapt to different installation environments, the noise reduction effect is good, and the noise reduction cost is low.
Referring to fig. 2, fig. 2 is a second schematic structural diagram of an air volume adjusting device according to another embodiment of the present application. As shown in fig. 2, the first controller 1 in the air volume adjusting device provided in the embodiment of the present application includes: a transmission circuit 12 and a zero-crossing detection circuit 11. Optionally, the first controller 1 includes an MCU (micro controller Unit).
The first terminal of the transmitting circuit 12 is used as a plurality of first sub-terminals included in the first terminal of the first controller 1, and is respectively connected to the second terminals of the semiconductor switches a1, … …, An in a one-to-one correspondence, the second terminal of the transmitting circuit 12 is connected to the first terminal of the zero-crossing detecting circuit 11, and the second terminal of the zero-crossing detecting circuit 11 is used as the second terminal of the first controller 1 and is connected to the power supply circuit 3.
It should be noted that, when the ac voltage waveform is converted from the positive half cycle to the negative half cycle, the voltage zero is passed through, and the zero-crossing detection refers to detection of the voltage zero.
The zero-crossing detection circuit is used for sending a zero-crossing signal to the sending circuit at the zero-crossing moment of the power voltage provided by the power circuit.
And when the zero-crossing signal is taken as a time reference and a preset time is counted, the sending circuit is used for sending the switch control signal corresponding to the air volume indicated by the air volume gear to the target semiconductor switch. Here, the predetermined timing may be determined in combination with a period of the alternating voltage, a ratio between the on time and the off time; here, if the power supply frequency is 50HZ, the cycle of the ac voltage is 20 ms.
The structure and the operation principle of an air volume adjusting device provided by the present application will be further described with reference to fig. 3.
Referring to fig. 3, fig. 3 is a third schematic structural view of an air volume adjusting device according to another embodiment of the present application. As shown in fig. 3, the air volume adjusting device provided in the embodiment of the present application further includes: at least one photoelectric coupler B1, … …, Bn, wherein n is a positive integer greater than or equal to 1;
the at least one photoelectric coupler B1, … …, Bn corresponds to the at least one semiconductor switch A1, … …, An one to one; a first end of each of the photo-couplers Bi (i is a positive integer greater than or equal to 1) is connected to the power supply circuit 3; for any one semiconductor switch Ai of at least one semiconductor switch A1, … … and An, the second end of the semiconductor switch Ai is connected to the second end of the photoelectric coupler Bi corresponding to the semiconductor switch Ai, and the third end of the photoelectric coupler Bi corresponding to the semiconductor switch Ai is connected to a first sub-end included in the first end of the first controller 1;
it should be noted that the photoelectric coupler Bi (optical coupler for short) is an electric-to-optical-to-electric converter for transmitting electric signals by using light as a medium, and has a good isolation effect on input electric signals and output electric signals, so that strong and weak electric signals are isolated, and a safety guarantee effect is achieved.
In specific implementation, the photocoupler Bi is configured to control the semiconductor switch Bi according to the switch control signal sent by the first controller 1, so that the first controller 1 is isolated from the semiconductor switch Bi.
Referring to fig. 3, as shown in fig. 3, the air volume adjusting device according to the embodiment of the present application further includes: a second controller 4, an operation panel 5, a display 6, and an illumination circuit 7.
A third terminal of the transmitting circuit 12 is used as a third terminal of the first controller 1 and is connected to a first terminal of the second controller 4; the second end of the second controller 4 is connected with the first end of the operation panel 5; a first terminal of the display 6 is connected to a fourth terminal of the second controller 4; a first end of the lighting circuit 7 is connected with a fourth end of the first controller 1; a third terminal of the second controller 4, a second terminal of the operation panel 5, a second terminal of the display 6, and a second terminal of the lighting circuit 7 are connected to the power supply circuit 3, respectively.
And the operation panel 5 is used for sending the received air quantity gear adjusting information of the alternating current fan 2 to the second controller 4.
Specifically, the operation panel 5 includes at least one or more of a knob, a key, a touch slider, a gesture recognition device, a voice recognition device, and a wireless communication device. Optionally, the wireless communication device may be a WIFI module, a bluetooth module, a 4G communication module, a 5G communication module, and the like.
The air quantity gear adjusting information comprises information that a user adjusts a first-level air quantity gear and a second-level air quantity gear. As an example, in specific implementation, the knob may rotate right and left, the right rotation increases the air volume gear, and the left rotation decreases the air volume gear; the key comprises an adding key and a reducing key, wherein the adding key increases the air quantity gear, and the reducing key reduces the air quantity gear; the touch sliding strip can slide rightwards and leftwards, the air quantity gear is increased when the touch sliding strip slides rightwards, and the air quantity gear is reduced when the touch sliding strip slides leftwards; the gesture recognition device recognizes the gesture of a user, increases the air quantity gear by waving a hand rightwards, and reduces the air quantity gear by waving a hand leftwards; the language recognition module recognizes user voice, and increases an air quantity gear or reduces an air quantity gear according to extraction and analysis of the user voice; the wireless communication device is in wireless communication with the user terminal and receives the adjusting information of the air quantity increasing gear or the air quantity reducing gear, which is input by the user through terminal software.
The air volume adjusting information also includes information for entering a noise adjusting mode. The operation panel 5 may receive information that the user selects to enter the noise adjustment mode, for example, setting a long key or recognizing a voice command to enter the noise adjustment mode; means for receiving information that the user selects to enter the noise adjustment mode may be separately provided in the operation panel 5, for example, a key for triggering the noise adjustment mode is provided, the noise adjustment mode is entered by triggering the key, and the like.
And the second controller 4 is configured to send the air volume gear identified from the received air volume gear adjustment information to the first controller 1.
Specifically, the second controller 4 may determine the currently selected air volume gear according to the upshift information or the downshift information in the current gear and the air volume gear adjustment information. Optionally, the second controller 4 includes an MCU (micro controller Unit).
In a possible implementation manner, after receiving the air volume gear adjustment information, the second controller 4 first determines whether to enter a noise adjustment mode; secondly, judging whether the air quantity gear adjusting information comprises an upshift signal or a downshift signal; and finally, determining the adjusted air volume gear according to the currently operated air volume gear of the range hood and the upshift signal or the downshift signal. It should be noted that the adjustment of the air volume is not limited to be performed between adjacent air volume gears, and the gear-skipping adjustment can be performed, for example, the adjustment is directly performed from a strong air gear to a weak air gear, or from a weak air gear to a stir-frying gear; the adjustment of the second-level air volume gear is not limited to the adjustment in the second-level gear corresponding to a certain first-level gear, for example, when the air volume gear is a strong weak wind gear, that is, when the maximum second-level air volume gear under the weak wind gear is reached, if the user continues to increase the second-level air volume gear, the first-level air volume gear can be directly adjusted, and the gear is adjusted to a strong wind gear, that is, the minimum second-level air volume gear under the strong wind gear.
The display 6 is used for displaying the working state of the air draft equipment of the air volume adjusting device, such as a first-level air volume gear, a second-level air volume gear and the like of the current operation of the range hood or the exhaust fan.
The air quantity adjusting device of the alternating current fan comprises a first controller and at least one semiconductor switch; for any one of at least one semiconductor switch, a first terminal of the semiconductor switch is connected to one of a plurality of fan taps included in a first terminal of the alternating-current fan, and a second terminal of the semiconductor switch is connected to a first sub-terminal included in a first terminal of the first controller; the second end of the first controller, the third end of the semiconductor switch and the second end of the alternating current fan are respectively connected to a power supply circuit; the first controller responds to the currently selected air volume gear, and sends a switch control signal corresponding to the air volume indicated by the air volume gear to a target semiconductor switch in at least one semiconductor switch to control the target semiconductor switch to be switched on and off in a circulating mode, so that the power supply circuit supplies power to the alternating current fan in a circulating switching mode through a target fan tap corresponding to the target semiconductor switch, and the alternating current fan generates the air volume indicated by the air volume gear when rotating under the power supply of the power supply circuit; the air quantity gears comprise a primary air quantity gear and a secondary air quantity gear; the secondary air volume gear is a subdivision gear under the primary air volume gear; the target fan tap corresponds to the primary air quantity gear; and in the process of circularly switching the target semiconductor switch between on and off, the ratio of the on time and the off time of the target semiconductor switch corresponds to the secondary air volume gear.
Therefore, compared with a noise reduction mode for detecting noise and generating a noise reduction signal in the prior art or a mode for reducing the noise when the detected noise reaches a preset noise threshold value, the method and the device have the advantages that the air quantity provided by the air draft equipment is adjusted according to the selected air quantity gear by setting the primary air quantity gear and the secondary air quantity gear refined under the primary air quantity gear, so that the careful adjustment of the air quantity can be realized, and the individual adjustment requirements of different users are fully met; the noise generated by the air draft equipment is changed by adjusting the air volume, a resonance point is not required to be calibrated in advance, redundant components are not required to be installed, the noise interference is avoided, the difference of different installation environments is adapted, the noise reduction cost is low, and the noise reduction mode is reliable.
The air volume adjusting method of the alternating current fan provided by the embodiment of the application is applied to the air volume adjusting device provided by the embodiment, and the air volume adjusting device comprises the following steps: a first controller and at least one semiconductor switch; for any one of at least one semiconductor switch, a first terminal of the semiconductor switch is connected to one of a plurality of fan taps included in a first terminal of the alternating-current fan, and a second terminal of the semiconductor switch is connected to a first sub-terminal included in a first terminal of the first controller; and the second end of the first controller, the third end of the semiconductor switch and the second end of the alternating current fan are respectively connected to a power supply circuit.
The air volume adjusting method provided by the embodiment of the application comprises the following steps:
the first controller responds to the currently selected air volume gear, and sends a switch control signal corresponding to the air volume indicated by the air volume gear to a target semiconductor switch in at least one semiconductor switch to control the target semiconductor switch to be switched on and off in a circulating mode, so that the power supply circuit supplies power to the alternating current fan in a circulating switching mode through a target fan tap corresponding to the target semiconductor switch, and the alternating current fan generates the air volume indicated by the air volume gear when rotating under the power supply of the power supply circuit.
The air quantity gears comprise a primary air quantity gear and a secondary air quantity gear; the secondary air volume gear is a subdivision gear under the primary air volume gear; the target fan tap corresponds to the primary air quantity gear; and in the process of circularly switching the target semiconductor switch between on and off, the ratio of the on time and the off time of the target semiconductor switch corresponds to the secondary air volume gear.
The air volume adjusting method provided by the embodiment of the application comprises the following steps: the first controller responds to the currently selected air volume gear, and sends a switch control signal corresponding to the air volume indicated by the air volume gear to a target semiconductor switch in at least one semiconductor switch to control the target semiconductor switch to be switched on and off in a circulating mode, so that the power supply circuit supplies power to the alternating current fan in a circulating switching mode through a target fan tap corresponding to the target semiconductor switch, and the alternating current fan generates the air volume indicated by the air volume gear when rotating under the power supply of the power supply circuit.
Therefore, compared with a noise reduction mode for detecting noise and generating a noise reduction signal in the prior art or a mode for reducing the noise when the detected noise reaches a preset noise threshold value, the method and the device have the advantages that the air quantity provided by the air draft equipment is adjusted according to the selected air quantity gear by setting the primary air quantity gear and the secondary air quantity gear refined under the primary air quantity gear, so that the careful adjustment of the air quantity can be realized, and the individual adjustment requirements of different users are fully met; the noise generated by the air draft equipment is changed by adjusting the air volume, a resonance point is not required to be calibrated in advance, redundant components are not required to be installed, the noise interference is avoided, the difference of different installation environments is adapted, the noise reduction cost is low, and the noise reduction mode is reliable.
Referring to fig. 4, fig. 4 is a schematic structural view of an air extracting device according to another embodiment of the present application. As shown in fig. 4, the air exhaust apparatus provided by the embodiment of the present application includes: the air extracting device comprises an air extracting device body 410 and an air volume adjusting device 420 arranged in the air extracting device body 410.
The air draft equipment provided by the embodiment of the application has the same technical characteristics as the air volume adjusting device of the range hood provided by the embodiment, so that the same technical problem can be solved, and the same technical effect is achieved.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The air volume adjusting device of the alternating current fan is characterized by comprising a first controller and at least one semiconductor switch;
for any one of at least one semiconductor switch, a first terminal of the semiconductor switch is connected to one of a plurality of fan taps included in a first terminal of the alternating-current fan, and a second terminal of the semiconductor switch is connected to a first sub-terminal included in a first terminal of the first controller; the second end of the first controller, the third end of the semiconductor switch and the second end of the alternating current fan are respectively connected to a power supply circuit;
the first controller responds to the currently selected air volume gear, and sends a switch control signal corresponding to the air volume indicated by the air volume gear to a target semiconductor switch in at least one semiconductor switch to control the target semiconductor switch to be switched on and off in a circulating mode, so that the power supply circuit supplies power to the alternating current fan in a circulating switching mode through a target fan tap corresponding to the target semiconductor switch, and the alternating current fan generates the air volume indicated by the air volume gear when rotating under the power supply of the power supply circuit;
the air quantity gears comprise a primary air quantity gear and a secondary air quantity gear; the secondary air volume gear is a subdivision gear under the primary air volume gear; the target fan tap corresponds to the primary air quantity gear; and in the process of circularly switching the target semiconductor switch between on and off, the ratio of the on time and the off time of the target semiconductor switch corresponds to the secondary air volume gear.
2. The air volume adjusting apparatus according to claim 1, wherein the first controller includes: a transmitting circuit and a zero-crossing detecting circuit;
the first end of the transmitting circuit is used as a plurality of first sub-ends included by the first end of the first controller and is respectively connected to the second ends of the semiconductor switches in one-to-one correspondence, the second end of the transmitting circuit is connected with the first end of the zero-crossing detecting circuit, and the second end of the zero-crossing detecting circuit is used as the second end of the first controller and is connected to the power supply circuit;
the zero-crossing detection circuit is used for sending a zero-crossing signal to the sending circuit at the zero-crossing moment of the power supply voltage provided by the power supply circuit;
and when the zero-crossing signal is taken as a time reference and a preset time is counted, the sending circuit is used for sending the switch control signal corresponding to the air volume indicated by the air volume gear to the target semiconductor switch.
3. The air volume adjusting device according to claim 1 or 2, characterized in that the air volume adjusting device further comprises at least one photocoupler; the at least one photoelectric coupler corresponds to the at least one semiconductor switch one by one; a first end of each of the photo-couplers is connected to the power circuit;
for any one semiconductor switch in at least one semiconductor switch, the second end of the semiconductor switch is connected to the second end of the photoelectric coupler corresponding to the semiconductor switch, and the third end of the photoelectric coupler corresponding to the semiconductor switch is connected to a first sub-end included in the first end of the first controller;
and the photoelectric coupler is used for controlling the semiconductor switch according to the switch control signal sent by the first controller, so that the first controller is isolated from the semiconductor switch.
4. The air volume adjusting device according to claim 2, characterized by further comprising: a second controller and an operation panel;
the third end of the transmitting circuit is used as the third end of the first controller and is connected to the first end of the second controller; the second end of the second controller is connected with the first end of the operation panel; the third end of the second controller and the second end of the operation panel are respectively connected to the power supply circuit;
the operation panel is used for sending the received air quantity gear adjusting information of the alternating-current fan to the second controller;
and the second controller is used for sending the air volume gear identified from the received air volume gear adjusting information to the first controller.
5. The airflow rate adjusting apparatus according to claim 4, wherein the operation panel comprises one or more of a knob, a key, a touch slide, a gesture recognition device, a voice recognition device, and a wireless communication device.
6. The air volume adjusting device according to claim 4, characterized in that the air volume adjusting device further comprises a display;
a first terminal of the display is connected to a fourth terminal of the second controller, and a second terminal of the display is connected to the power supply circuit;
and the display is used for displaying the working state of the air draft equipment provided with the air volume adjusting device.
7. The air volume adjusting device according to claim 4, characterized in that the air volume adjusting device further comprises a lighting circuit;
and the first end of the lighting circuit is connected with the fourth end of the first controller, and the second end of the lighting circuit is connected with the power supply circuit.
8. The air volume adjusting device according to claim 1, wherein the semiconductor switch includes: a bidirectional thyristor switch.
9. An air volume adjusting method of an alternating current fan, characterized in that the air volume adjusting method is applied to the air volume adjusting device according to any one of claims 1 to 8, and the air volume adjusting device comprises a first controller and at least one semiconductor switch;
for any one of at least one semiconductor switch, a first terminal of the semiconductor switch is connected to one of a plurality of fan taps included in a first terminal of the alternating-current fan, and a second terminal of the semiconductor switch is connected to a first sub-terminal included in a first terminal of the first controller; the second end of the first controller, the third end of the semiconductor switch and the second end of the alternating current fan are respectively connected to a power supply circuit;
the first controller responds to the currently selected air volume gear, and sends a switch control signal corresponding to the air volume indicated by the air volume gear to a target semiconductor switch in at least one semiconductor switch to control the target semiconductor switch to be switched on and off in a circulating mode, so that the power supply circuit supplies power to the alternating current fan in a circulating switching mode through a target fan tap corresponding to the target semiconductor switch, and the alternating current fan generates the air volume indicated by the air volume gear when rotating under the power supply of the power supply circuit;
the air quantity gears comprise a primary air quantity gear and a secondary air quantity gear; the secondary air volume gear is a subdivision gear under the primary air volume gear; the target fan tap corresponds to the primary air quantity gear; and in the process of circularly switching the target semiconductor switch between on and off, the ratio of the on time and the off time of the target semiconductor switch corresponds to the secondary air volume gear.
10. An air extraction apparatus, characterized in that the air extraction apparatus comprises: the air volume adjusting device comprises an air draft equipment body and the air volume adjusting device arranged in the air draft equipment body and used as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210152969.5A CN114320991A (en) | 2022-02-18 | 2022-02-18 | Air volume adjusting device and method for alternating-current fan and air draft equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210152969.5A CN114320991A (en) | 2022-02-18 | 2022-02-18 | Air volume adjusting device and method for alternating-current fan and air draft equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114320991A true CN114320991A (en) | 2022-04-12 |
Family
ID=81030716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210152969.5A Pending CN114320991A (en) | 2022-02-18 | 2022-02-18 | Air volume adjusting device and method for alternating-current fan and air draft equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114320991A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817860A (en) * | 2012-08-17 | 2012-12-12 | 佛山市顺德区海伦宝电器有限公司 | Multi-gear control circuit for air conditioner fan or fan |
| CN204003546U (en) * | 2014-06-13 | 2014-12-10 | 艾美特电器（深圳）有限公司 | A kind of many gears wind speed electric fan |
-
2022
- 2022-02-18 CN CN202210152969.5A patent/CN114320991A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817860A (en) * | 2012-08-17 | 2012-12-12 | 佛山市顺德区海伦宝电器有限公司 | Multi-gear control circuit for air conditioner fan or fan |
| CN204003546U (en) * | 2014-06-13 | 2014-12-10 | 艾美特电器（深圳）有限公司 | A kind of many gears wind speed electric fan |
Non-Patent Citations (2)
| Title |
|---|
| 日本电气学会电力半导体变流方式调研专门委员会: "电力半导体变流电路", 31 January 1993, 机械工业出版社, pages: 17 - 18 * |
| 王岚: "机电接口技术", 31 July 2003, 中央广播电视大学出版社, pages: 60 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2457550T3 (en) | Cooking device, control method and program for it | |
| CN109506275B (en) | Automatic pressure regulating control method of range hood and range hood | |
| CN107255348B (en) | Air conditioner electric quantity detection method based on single module and air conditioner | |
| CN106019958B (en) | Gesture recognition control method, gesture recognition control device and household appliance | |
| CN216842326U (en) | Air quantity adjusting device and air draft equipment of alternating current fan | |
| CN216867067U (en) | Air volume adjusting device and air draft equipment of alternating current fan | |
| CN116147139A (en) | Method and device for energy conservation of air conditioner, air conditioner and storage medium | |
| CN116147140A (en) | Method and device for energy conservation of air conditioner, air conditioner and storage medium | |
| CN114320991A (en) | Air volume adjusting device and method for alternating-current fan and air draft equipment | |
| CN106020486B (en) | Control method, device and equipment of infrared gesture recognition device | |
| CN107896083B (en) | Motor speed adjusting method and device | |
| US9899947B2 (en) | Control apparatus for DC inverter electric motor | |
| CN114320990A (en) | Air volume adjusting device and method for alternating-current fan and air draft equipment | |
| CN116147142A (en) | Method and device for energy conservation of air conditioner, air conditioner and storage medium | |
| CN216867060U (en) | Rotating speed adjusting circuit of alternating current fan and air draft equipment | |
| WO2022087338A1 (en) | Load control device having a capacitive touch surface | |
| CN109405187B (en) | Control method and variable frequency controller | |
| US7002123B2 (en) | Microwave oven and method of controlling the same | |
| JP2011015512A (en) | Power control system, method of controlling the same, and program | |
| JPH04248324A (en) | Home control system | |
| CN109392206B (en) | Heating control method, heating control device and cooking appliance | |
| US20140305145A1 (en) | Household appliance, system and method of controling household appliances | |
| JP2011205822A (en) | Power control system, control method thereof, and program | |
| CN110635570B (en) | Intelligent power monitoring control module based on Internet of things and monitoring control method | |
| CN107885260A (en) | A kind of Automatic adjustment method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |