CN110657478A - Multi-stage linkage variable frequency air volume control device - Google Patents
Multi-stage linkage variable frequency air volume control device Download PDFInfo
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- CN110657478A CN110657478A CN201911065074.2A CN201911065074A CN110657478A CN 110657478 A CN110657478 A CN 110657478A CN 201911065074 A CN201911065074 A CN 201911065074A CN 110657478 A CN110657478 A CN 110657478A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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Abstract
The invention discloses a multi-cascade dynamic variable-frequency air volume control device which comprises a smoke exhaust channel, a plurality of smoke hoods respectively communicated with the smoke exhaust channel and a control device, wherein a fan is arranged in the smoke exhaust channel. The smoke hood comprises a microprocessor, a digital air valve and a smoke sensor, and the smoke sensor detects the smoke amount of the smoke hood where the smoke sensor is located. And the control device determines the rotating speed of the fan and the angle of the digital air valve to be opened according to the smoke amount. The microprocessor controls the work of the digital air valve according to the angle at which the digital air valve needs to be opened, and controls the work of the fan according to the rotating speed of the fan so as to control the air quantity of the fan. The invention is used for solving the technical problem of large power consumption when a plurality of range hoods are connected in parallel.
Description
Technical Field
The invention relates to the technical field of range hoods, in particular to a multi-stage linkage variable-frequency air volume control device.
Background
In the prior art, a single smoke hood is provided with an independent power system fan, so that independent operation of each smoke hood can be realized, but the distance for conveying the oil smoke exhausted by the single equipment is limited because the power of the fan which is distributed on the single equipment cannot be too large (limited by factors such as space, structure, noise and the like). Especially when a plurality of gas hoods are connected in parallel and used simultaneously, when the diversion of the pipeline is not well done, the flow of the fans of a single device conflicts with each other to a certain extent.
Disclosure of Invention
The invention mainly aims to provide a multi-stage dynamic variable-frequency air volume control device, and aims to solve the problem that a plurality of existing range hoods are connected in parallel and the power consumption is large.
In order to achieve the aim, the multi-stage linkage variable frequency air quantity control device comprises a smoke exhaust channel, a plurality of smoke hoods respectively communicated with the smoke exhaust channel and a control device, wherein a fan is arranged in the smoke exhaust channel; the smoke hood comprises a microprocessor, a digital air valve and a smoke sensor, the microprocessors are connected with the control device, and the microprocessors are respectively connected with the digital air valve and the smoke sensor;
the smoke sensor is used for detecting the smoke quantity of the smoke hood where the smoke sensor is located;
the control device is used for determining the rotating speed of the fan and the angle of the digital air valve needing to be opened according to the smoke amount;
and the microprocessor is used for controlling the work of the digital air valve according to the angle at which the digital air valve needs to be opened and controlling the work of the fan according to the rotating speed of the fan so as to control the air quantity of the fan.
Optionally, the blower includes a frequency converter and a motor, and the frequency converter is electrically connected to the motor and the microprocessor, respectively.
Optionally, the multistage linkage variable frequency air volume control device further comprises a serial circuit, and the plurality of microprocessors are electrically connected with the control device through the serial circuit.
Optionally, the multistage linkage variable-frequency air volume control device further comprises a display circuit, the control device comprises a first serial interface, and the first serial interface of the control device is connected with the input and output end of the display circuit;
and the display circuit is used for displaying the smoke quantity of each smoke cover, the opening angle of the digital air valve and the rotating speed of the fan.
Optionally, the multi-stage linkage variable-frequency air volume control device further comprises an indicator light circuit, the microprocessor comprises an indicator light control end, and the indicator light control end of the processor is connected with a controlled end of the indicator light circuit;
and the indicating lamp circuit is used for indicating the working state of the fan cover and prompting when the fan cover has a fault.
Optionally, the multistage linkage variable frequency air volume control device further comprises a key circuit, the microprocessor comprises an operation signal input end, and an output end of the key circuit is connected with the operation signal input end of the microprocessor;
the key circuit is used for keying in an operation signal to open or close the smoke hood and adjusting the opening angle of the digital air valve.
Optionally, the display circuit includes a communication circuit, a video interface, and a display screen, where a first input/output end of the communication circuit is an input/output end of the display circuit, and a second input/output end of the communication circuit is connected to the display screen through the video interface.
Optionally, the communication circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first magnetic bead, a second magnetic bead, a first chip, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first diode, and a second diode, the first chip comprises a receiver input pin, a receiver output enable pin, a driver input pin, a ground pin, an in-phase driver output/receiver input pin, an inverting driver output/receiver input pin, and a power pin, the first end of the first resistor, the first end of the second resistor and the first end of the third resistor form a first input/output end of the communication circuit, the second end of the first resistor, the first end of the third resistor and the receiver output enable pin of the first chip are interconnected; the first end of the second resistor, the receiver output pin of the first chip and the driver output enable pin are interconnected, and the second end of the second resistor is grounded; the driver input pin of the first chip is connected with the second end of the third resistor, the ground pin of the first chip, the second end of the first capacitor, the second end of the second capacitor, the second end of the fifth resistor and the second end of the third capacitor are all grounded, the power pin of the first chip and the first end of the first capacitor are connected with a first power supply, the input pin of the in-phase driver output/receiver of the first chip, the first end of the fourth resistor, the first end of the second capacitor, the first end of the first diode array and the first end of the first magnetic bead are interconnected, a driver output/receiver input pin of the first chip, a second end of the second diode array, a first end of the fifth resistor, a first end of the third capacitor, and a first segment of the second magnetic bead are interconnected; the second end of the third resistor and the second end of the fourth resistor are both connected with the first power supply; the first end of the fourth capacitor, the second end of the first magnetic bead and the first end of the sixth resistor are interconnected, the second end of the fourth capacitor and the second end of the second magnetic bead are connected, and the first end of the fourth capacitor and the second end of the fourth capacitor form a second input/output end of the communication circuit.
Optionally, the serial circuit includes a seventh resistor, an eighth resistor, a ninth resistor, a second chip, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a third magnetic bead, and a fourth magnetic bead, the second chip includes a data transmission input pin, a data reception output pin, a power pin, a ground pin, a high-level bus pin, and a low-level bus pin, the serial circuit includes a first input/output end and a second input/output end, a first end of the seventh resistor and a first end of the eighth resistor form a first input/output end of the serial circuit, the data transmission input pin of the second chip is connected to a second end of the seventh resistor, the data reception output pin of the second chip is connected to a second end of the eighth resistor, and the power pin of the second chip and the first end of the fifth capacitor are both connected to a second power supply, the ground pin of the second chip and the second end of the fifth capacitor are grounded, the high-level bus pin of the second chip, the first end of the sixth capacitor and the first end of the third magnetic bead are interconnected, and the low-level bus pin of the second chip, the second end of the seventh capacitor and the first end of the fourth magnetic bead are interconnected; a first end of the eighth capacitor is connected to the second end of the third magnetic bead, and the second end of the eighth capacitor, the second end of the fourth magnetic bead and the first end of the ninth resistor are interconnected; the first end of the eighth capacitor and the second end of the eighth capacitor form a second input/output end of the serial circuit; a first end of the eighth capacitor and a second end of the ninth resistor are connected to the first port; and the second end of the sixth capacitor and the second end of the seventh capacitor are both grounded.
Optionally, the control device and the microprocessor are of model TM 1628.
Optionally, the microprocessor of the multi-stage linkage variable-frequency air volume control device comprises a wireless communication module, and the microprocessors are wirelessly connected with the control device.
Optionally, the amount of smoke is in the range of 5-15mg/m3When the air pressure is high, the opening angle of the digital air valve is controlled to be 10-30 degrees, and the air quantity of the digital air valve is 2000m2/h；
The smoke amount is 15-20mg/m3When the air pressure is higher than the preset value, the opening angle of the digital air valve is controlled to be 40-60 degrees, and the air quantity of the digital air valve is 3500m2/h；
In the smoke amount is more than 20mg/m3When the air pressure is high, the opening angle of the digital air valve is controlled to be 70-90 degrees, and the air quantity of the digital air valve is 5000m2/h。
The smoke exhaust device is provided with a smoke exhaust channel, a plurality of smoke hoods respectively communicated with the smoke exhaust channel and a control device, wherein a fan is arranged in the smoke exhaust channel. The smoke hood comprises a microprocessor, a digital air valve and a smoke sensor, the microprocessor is connected with the control device, and the microprocessor is respectively connected with the digital air valve and the smoke sensor. In addition, the smoke sensor detects the smoke amount of the smoke hood where the smoke sensor is located, and the control device determines the rotating speed of the fan and the angle of the digital air valve which needs to be opened according to the smoke amount. And the microprocessor controls the work of the digital air valve according to the angle at which the digital air valve needs to be opened, and controls the work of the fan according to the rotating speed of the fan so as to control the air quantity of the fan. At this moment, correspond the fan number through changing exhaust passage in order to change a petticoat pipe among the prior art to realize that a fan can discharge the smog of a plurality of petticoats, avoided needing to select to open according to the demand and correspond the fan, only need adjust the wind speed of a fan moreover, and the work of single fan is more energy saving than the switching work as required of a plurality of fans. The technical problem that a plurality of range hoods are connected in parallel and the power consumption is large is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a multi-stage linkage variable frequency air volume control device according to the present invention;
FIG. 2 is a block diagram of a multi-stage cascade dynamic variable frequency wind control device according to an embodiment of the present invention;
FIG. 3 is a block diagram of a multi-stage cascade dynamic variable frequency wind control device according to an embodiment of the present invention;
FIG. 4 is a block diagram of a multi-stage cascade variable frequency wind control device according to an embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of a module communication circuit of the multi-stage linkage variable frequency wind control device according to the present invention;
fig. 6 is a circuit diagram of a serial data input interface and a serial data output interface in the single-channel video processing circuit.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a multi-stage dynamic variable-frequency air volume control device, which is used for solving the technical problem of higher power consumption when a plurality of range hoods are connected in parallel.
In an embodiment, as shown in fig. 1 and 2, the multi-stage linkage variable frequency air volume control device includes a smoke exhaust channel 20, a plurality of smoke hoods 30 respectively communicated with the smoke exhaust channel 20, and a control device 40, and a fan 10 is disposed in the smoke exhaust channel 20.
Wherein, correspond fan 10 number through change exhaust passage 20 with a change petticoat pipe among the prior art to realize that a fan 10 can discharge the smog of a plurality of petticoats 30, thereby need not open the fan 10 that single petticoat pipe corresponds as required, very big saving the power consumption that fan 10 started. In addition, a plurality of smoke hoods 30 can share one fan 10, and in a large-scale shopping mall or a restaurant with a complex environment, the air volume of each fan 10 does not need to be separately adjusted, and only the smoke volume of the total smoke hood needs to be known, and then the fan 10 is adjusted to the corresponding air volume, so that the smoke processing speed of the whole multistage linkage variable frequency air volume control device 40 can be increased, and the energy consumption can be greatly saved. Therefore, the problem of large energy consumption when a plurality of range hoods are connected in parallel is solved, the overall energy conservation and emission reduction of a kitchen are realized, and the flow balance among equipment is realized. Meanwhile, the overall noise of the kitchen is greatly reduced.
Optionally, as shown in fig. 2, in order to achieve a better regulation function, the smoke hood includes a microprocessor 3011, a digital air valve 3012 and a smoke sensor 3013, the microprocessor 3011 is connected to the control device 40, and the microprocessor 3011 is connected to the digital air valve 3012 and the smoke sensor 3013 respectively.
The smoke sensor 3013 detects the amount of smoke in the smoke hood where the smoke sensor 3013 is located, the smoke sensor 3013 can be selected according to the application, for example, in the case of more oil smoke, the smoke sensor 3013 with better safety performance and sensitivity for detecting oil smoke is used, and in the workshop, the smoke sensor 3013 with sensitivity for detecting dust is used. In this case, the parameters detected are generally in mg/m3Is a unit. The control device 40 determines the rotation speed of the fan 10 and the angle at which the digital air valve 3012 needs to be opened according to the smoke amount, the smoke amount may directly correspond to the air volume of the fan 10, that is, the sum of all detected smoke amounts corresponds to the air volume of a numerical value, and the actual correspondence between the two is measured according to an actual experiment, so that the rotation speed of the fan 10 and the angle at which the digital air valve 3012 needs to be opened are determined according to the performance of the fan 10, and smoke is removed in time. The microprocessor 3011 controls the digital air valve 3012 to operate according to the angle at which the digital air valve 3012 needs to be opened, and controls the fan 10 to operate according to the rotation speed of the fan 10, so as to control the air volume of the fan 10.
Optionally, the blower 10 includes a frequency converter and a motor, and the frequency converter is electrically connected to the motor and the microprocessor 3011, respectively.
The frequency converter controls the motor to work according to the rotation speed of the fan 10 obtained by the microprocessor 3011 from the control device 40, that is, the rotation speed of the fan 10 required by detecting the sum of all the smoke amounts, so as to obtain the corresponding air volume to treat all the smoke.
Optionally, as shown in fig. 4, in order to facilitate information exchange between the control device 40 and the plurality of microprocessors 3011, the multi-stage linkage variable-frequency air volume control device 40 further includes a serial circuit 80, and the plurality of microprocessors 3011 and the control device 40 are electrically connected through the serial circuit 80.
Optionally, as shown in fig. 3, the multi-stage linkage variable-frequency air volume control device 40 further includes a display circuit 50, the control device 40 includes a first serial interface, and the first serial interface of the control device 40 is connected to the input and output end of the display circuit 50.
Wherein, the display circuit 50 displays the smoke amount of each smoke hood, the opening angle of the digital air valve 3012 and the rotating speed of the fan 10. The actual operation conditions of the whole multi-stage linkage variable-frequency air volume control device 40 and each smoke hood and the fan 10 can be known by a user conveniently, and the monitoring and the fault finding are facilitated.
Optionally, as shown in fig. 3, the multi-stage linkage variable-frequency air volume control device 40 further includes an indicator light circuit 70, the microprocessor 3011 includes an indicator light control terminal, and the indicator light control terminal of the processor is connected to the controlled terminal of the indicator light circuit 70.
The indicator light circuit 70 indicates the working state of the fan housing, and prompts when the fan housing has a fault. The actual operation conditions of the whole multi-stage linkage variable-frequency air volume control device 40 and each smoke hood and the fan 10 can be known by a user conveniently, and the monitoring and the fault finding are facilitated.
Optionally, as shown in fig. 3, the multi-stage linkage variable-frequency air volume control device 40 further includes a key circuit 60, the microprocessor 3011 includes an operation signal input terminal, and an output terminal of the key circuit 60 is connected to the operation signal input terminal of the microprocessor 3011.
Wherein, the key circuit 60 inputs an operation signal to open or close the smoke hood and adjusts the opening angle of the digital air valve 3012. The multi-stage linkage variable-frequency air volume control device 40 can be conveniently controlled by a user, when the multi-stage linkage variable-frequency air volume control device 40 breaks down in operation, an operator can adjust each part of the multi-stage linkage variable-frequency air volume control device 40 according to experience and experimental data, and can also close forcibly, so that effective use and protection are realized.
Optionally, the display circuit 50 includes a communication circuit, a video interface, and a display screen, where a first input/output end of the communication circuit is an input/output end of the display circuit 50, and a second input/output end of the communication circuit is connected to the display screen through the video interface.
The communication circuit is a bidirectional transmission network, which can facilitate information exchange between the display screen and the microprocessor 3011 and the processor. In addition, the video interface can be selected from video interfaces with different specifications so as to be suitable for various display devices.
Optionally, as shown in fig. 5, the communication circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first magnetic bead FB1, a second magnetic bead FB2, a first chip U1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first diode D1, and a second diode D2, the first chip U1 includes a receiver input pin RO, a receiver output enable pin RE, a driver output enable pin DE, a driver input pin DI, a ground pin GND, a non-inverting driver output/receiver input pin a, an inverting driver output/receiver input pin B, and a power supply pin VCC, a first terminal RXD1 of the first resistor R1, a first terminal CTL of the second resistor R2, and a first terminal D of the third resistor R3 constitute the first input and output terminal TXD of the txr 3, the second end of the first resistor R1, the first end of the third resistor R3 and the receiver output enable pin RE of the first chip U1 are interconnected; a first end of the second resistor R2, a receiver output pin of the first chip U1 and the driver output enable pin DE are interconnected, and a second end of the second resistor R2 is grounded; the driver input pin DI of the first chip U1 is connected to the second end of the third resistor R3, the ground pin GND of the first chip U1, the second end of the first capacitor C1, the second end of the second capacitor C2, the second end of the fifth resistor R5, and the second end of the third capacitor C3 are all grounded, the power pin VCC of the first chip U1 and the first end of the first capacitor C1 are all connected to a first power supply, the in-phase driver output/receiver input pin a of the first chip U1, the first end of the fourth resistor R4, the first end of the second capacitor C2, the first end of the first diode D1 array, and the first end of the first magnetic bead FB1 are interconnected, the RO driver output/receiver input pin of the first chip U1, the second end of the second diode D2 array, the first end of the fifth diode R5, and the second end of the resistor R3 are all grounded, and the first end of the first chip U1 is connected to a, The first end of the third capacitor C3 and the first section of the second magnetic bead FB2 are interconnected; a second end of the third resistor R3 and a second end of the fourth resistor R4 are both connected with the first power supply; the first end of the fourth capacitor C4, the second end of the first magnetic bead FB1, and the first end of the sixth resistor R6 are interconnected, the second end of the fourth capacitor C4 is connected to the second end of the second magnetic bead FB2, and the first end a + of the fourth capacitor C4 and the second end B-of the fourth capacitor C4 form a second input/output end of the communication circuit.
The communication circuit may connect the control device 40 or the microprocessor 3011 to the display screen, and specifically, the first input/output end of the communication circuit is composed of three wires and is connected to corresponding pins of the processor, respectively, the second input/output end of the communication circuit is composed of two wires and is connected to the display screen, in addition, on the two wires of the second input/output end, a wire at one end is further set to be a fuse F1/F2, and the second end of the sixth resistor R6 and the second end of the second magnetic bead FB2 are set to be an interface J1, so as to facilitate later expansion.
Alternatively, as shown in fig. 6, the serial circuit 80 includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a second chip U2, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a third magnetic bead FB3, and a fourth magnetic bead FB4, the second chip U2 includes a transmit data input pin, a receive data output pin, a power pin VCC, a ground pin GND, a high-level bus pin, and a low-level bus pin, the serial circuit 80 includes a first input output terminal and a second input output terminal, the first terminal CAN d of the seventh resistor R7 and the first terminal CAN RXD of the eighth resistor R8 constitute a first input output terminal of the serial circuit 80, the transmit data input pin of the second chip U2 is connected to the second terminal of the seventh resistor R7, the receive data output pin of the second chip U2 is connected to the second terminal of the eighth resistor R8, a power pin VCC of the second chip U2 and a first end of the fifth capacitor C5 are both connected to a second power supply, a ground pin GND of the second chip U2 and a second end of the fifth capacitor C5 are both grounded, a high-level bus pin of the second chip U2, a first end of the sixth capacitor C6 and a first end of the third magnetic bead FB3 are interconnected, a low-level bus pin of the second chip U2, a second end of the seventh capacitor C7 and a first end of the fourth FB magnetic bead 4 are interconnected; a first end of the eighth capacitor C8 is connected to the second end of the third magnetic bead FB3, and a second end of the eighth capacitor C8, a second end of the fourth magnetic bead FB4 and a first end of the ninth resistor R9 are interconnected; the first end CANH of the eighth capacitor C8 and the second end CANL of the eighth capacitor C8 form a second input/output end of the serial circuit 80; a first end of the eighth capacitor C8 and a second end of the ninth resistor R9 are connected to a first port; a second terminal of the sixth capacitor C6 and a second terminal of the seventh capacitor C7 are both grounded.
The serial circuit 80 connects the control device 40 and the microprocessor 3011, and signals can be transmitted in both directions in the serial circuit 80. In addition, on the two wires of the second input and output end, a wire at one end is set to be a fuse F3/F4, and the second end of the ninth resistor R9 and the second end of the third magnetic bead FB3 are set to be an interface J2, so that later expansion is facilitated.
It should be noted that the serial circuit 80 and the communication circuit may be added in multiple ways according to actual needs. Optionally, in order to enhance the control capability and achieve better control effect, the control device 40 and the microprocessor 3011 are made of a chip with model TM 1628. Thereby enhancing the ability to optimize later.
Optionally, in order to simplify the circuit configuration, the microprocessor 3011 of the multi-stage linkage variable-frequency air volume control device 40 includes a wireless communication module, and the microprocessors 3011 are wirelessly connected to the control device 40.
The wireless communication module can select the existing wireless communication circuit and only needs to realize wireless communication.
In order to further optimize the smoke treatment effect, the smoke quantity is 5-15mg/m3When the air pressure is controlled, the opening angle of the digital air valve 3012 can be controlled to be between 10 degrees and 30 degrees, and the maximum air quantity of the digital air valve 3012 is 2000m2H is used as the reference value. The smoke amount is 15-20mg/m3When the air volume of the digital air valve 3012 is controlled to be between 40 ° and 60 °, the maximum air volume of the digital air valve 3012 is 3500m2H is used as the reference value. In the smoke amount is more than 20mg/m3When the air pressure is controlled, the opening angle of the digital air valve 3012 can be controlled to be 70 degrees to 90 degrees, and the maximum air quantity of the digital air valve 3012 is 5000m2/h。
Wherein, when above-mentioned processing goes on, fan 10 can be better handle smog volume, when smog volume is little simultaneously, further practices thrift the electric quantity, compares single petticoat pipe and fan 10 that corresponds, more can the energy saving. It is noted that the corresponding relation between the amount of smoke and the angle can also be set according to actual needs, for example, 15mg/m3The opening angle of the air flap 3012 is 40 °. This relationship is not unique, and is set according to the requirements of the actual application occasion on the smoke volume and the exhaust.
Optionally, in order to further optimize the data transmission performance, the model of the first chip U1 is SP3485 EN. Optionally, in order to further optimize the data transmission performance, the model of the second chip U2 is SN65HVD 232.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The multi-stage linkage variable-frequency air volume control device is characterized by comprising a smoke exhaust channel, a plurality of smoke hoods respectively communicated with the smoke exhaust channel and a control device, wherein a fan is arranged in the smoke exhaust channel; the control device is characterized in that the smoke hood comprises a microprocessor, a digital air valve and a smoke sensor, the microprocessors are connected with the control device, and the microprocessors are respectively connected with the digital air valve and the smoke sensor;
the smoke sensor is used for detecting the smoke quantity of the smoke hood where the smoke sensor is located;
the control device is used for determining the rotating speed of the fan and the angle of the digital air valve needing to be opened according to the smoke amount;
and the microprocessor is used for controlling the work of the digital air valve according to the angle at which the digital air valve needs to be opened and controlling the work of the fan according to the rotating speed of the fan so as to control the air quantity of the fan.
2. The multi-stage cascade dynamic variable frequency air volume control device according to claim 1, wherein the multi-stage linkage variable frequency air volume control device further comprises a serial circuit, and a plurality of the microprocessors are electrically connected with the control device through the serial circuit.
3. The multi-stage cascade dynamic variable frequency air volume control device according to claim 1, wherein the multi-stage linkage variable frequency air volume control device further comprises a display circuit, the control device comprises a first serial interface, and the first serial interface of the control device is connected with the input and output ends of the display circuit;
and the display circuit is used for displaying the smoke quantity of each smoke cover, the opening angle of the digital air valve and the rotating speed of the fan.
4. The multi-stage cascade dynamic variable frequency air volume control device according to claim 1, wherein the multi-stage linkage variable frequency air volume control device further comprises an indicator light circuit, the microprocessor comprises an indicator light control terminal, and the indicator light control terminal of the processor is connected with the controlled terminal of the indicator light circuit;
and the indicating lamp circuit is used for indicating the working state of the fan cover and prompting when the fan cover has a fault.
5. The multi-stage cascade dynamic variable frequency air volume control device according to claim 1, wherein the multi-stage linkage variable frequency air volume control device further comprises a key circuit, the microprocessor comprises an operation signal input terminal, and an output terminal of the key circuit is connected with the operation signal input terminal of the microprocessor;
the key circuit is used for keying in an operation signal to open or close the smoke hood and adjusting the opening angle of the digital air valve.
6. The multi-stage cascade dynamic variable frequency wind control device according to claim 2, wherein the display circuit comprises a communication circuit, a video interface and a display screen, the first input/output terminal of the communication circuit is the input/output terminal of the display circuit, and the second input/output terminal of the communication circuit is connected to the display screen through the video interface.
7. The multi-cascade dynamic variable frequency wind control device according to claim 6, wherein the communication circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first magnetic bead, a second magnetic bead, a first chip, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first diode, and a second diode, the first chip comprises a receiver input pin, a receiver output enable pin, a driver input pin, a ground pin, an in-phase driver output/receiver input pin, an inverting driver output/receiver input pin, and a power pin, a first end of the first resistor, a first end of the second resistor, and a first end of the third resistor form a first input/output terminal of the communication circuit, a second end of the first resistor, a second end of the second resistor, a third end of the second resistor, a second end of the first resistor, a second end of the second resistor, a second, The first end of the third resistor and the receiver output enable pin of the first chip are interconnected; the first end of the second resistor, the receiver output pin of the first chip and the driver output enable pin are interconnected, and the second end of the second resistor is grounded; the driver input pin of the first chip is connected with the second end of the third resistor, the ground pin of the first chip, the second end of the first capacitor, the second end of the second capacitor, the second end of the fifth resistor and the second end of the third capacitor are all grounded, the power pin of the first chip and the first end of the first capacitor are connected with a first power supply, the input pin of the in-phase driver output/receiver of the first chip, the first end of the fourth resistor, the first end of the second capacitor, the first end of the first diode array and the first end of the first magnetic bead are interconnected, a driver output/receiver input pin of the first chip, a second end of the second diode array, a first end of the fifth resistor, a first end of the third capacitor, and a first segment of the second magnetic bead are interconnected; the second end of the third resistor and the second end of the fourth resistor are both connected with the first power supply; the first end of the fourth capacitor, the second end of the first magnetic bead and the first end of the sixth resistor are interconnected, the second end of the fourth capacitor and the second end of the second magnetic bead are connected, and the first end of the fourth capacitor and the second end of the fourth capacitor form a second input/output end of the communication circuit.
8. The multi-stage cascaded dynamic variable frequency air volume control device of claim 2, wherein the serial circuit comprises a seventh resistor, an eighth resistor, a ninth resistor, a second chip, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a third magnetic bead and a fourth magnetic bead, the second chip comprises a data transmitting input pin, a data receiving output pin, a power pin, a ground pin, a high-level bus pin and a low-level bus pin, the serial circuit comprises a first input/output end and a second input/output end, a first end of the seventh resistor and a first end of the eighth resistor form a first input/output end of the serial circuit, the data transmitting input pin of the second chip is connected with a second end of the seventh resistor, the data receiving output pin of the second chip is connected with a second end of the eighth resistor, the power pin of the second chip and a first end of the fifth capacitor are both connected with a second power supply, the ground pin of the second chip and the second end of the fifth capacitor are grounded, the high-level bus pin of the second chip, the first end of the sixth capacitor and the first end of the third magnetic bead are interconnected, and the low-level bus pin of the second chip, the second end of the seventh capacitor and the first end of the fourth magnetic bead are interconnected; a first end of the eighth capacitor is connected to the second end of the third magnetic bead, and the second end of the eighth capacitor, the second end of the fourth magnetic bead and the first end of the ninth resistor are interconnected; the first end of the eighth capacitor and the second end of the eighth capacitor form a second input/output end of the serial circuit; a first end of the eighth capacitor and a second end of the ninth resistor are connected to the first port; and the second end of the sixth capacitor and the second end of the seventh capacitor are both grounded.
9. The multiple cascade dynamic variable frequency wind control device of claim 2 wherein the control device and the microprocessor are model TM 1628.
10. The multi-stage cascade dynamic variable frequency wind control device of claim 1,
the amount of smoke is 5-15mg/m3When the air pressure is high, the opening angle of the digital air valve is controlled to be 10-30 degrees, and the air quantity of the digital air valve is 2000m2/h；
The smoke amount is 15-20mg/m3When the air pressure is higher than the preset value, the opening angle of the digital air valve is controlled to be 40-60 degrees, and the air quantity of the digital air valve is 3500m2/h；
In the smoke amount is more than 20mg/m3In time, the digital air valve is controlled to be openedThe opening angle is 70-90 degrees, and the air quantity of the digital air valve is 5000m2/h。
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| CN201911065074.2A CN110657478A (en) | 2019-10-30 | 2019-10-30 | Multi-stage linkage variable frequency air volume control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113294822A (en) * | 2021-06-04 | 2021-08-24 | 广东万家乐燃气具有限公司 | Method for detecting smoke absorption effect of range hood |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294822A (en) * | 2021-06-04 | 2021-08-24 | 广东万家乐燃气具有限公司 | Method for detecting smoke absorption effect of range hood |
| CN113294822B (en) * | 2021-06-04 | 2023-12-26 | 广东万家乐燃气具有限公司 | Smoke absorbing effect detection method for range hood |
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