CN109855144B - Control method and control system of variable-frequency range hood and variable-frequency range hood - Google Patents
Control method and control system of variable-frequency range hood and variable-frequency range hood Download PDFInfo
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- CN109855144B CN109855144B CN201910261025.XA CN201910261025A CN109855144B CN 109855144 B CN109855144 B CN 109855144B CN 201910261025 A CN201910261025 A CN 201910261025A CN 109855144 B CN109855144 B CN 109855144B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000001276 controlling effect Effects 0.000 claims abstract description 19
- 230000003068 static effect Effects 0.000 claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 5
- 239000003517 fume Substances 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model discloses a control method and a control system of a variable frequency range hood, and the variable frequency range hood, which can realize large air quantity, high full pressure efficiency and high maximum static pressure, and the rotating speed of a fan can be adjusted in a large range. The control method of the variable frequency range hood provided by the embodiment of the utility model comprises the following steps: collecting operation information of a variable-frequency alternating-current motor of the range hood; comparing the operation information with stored setting information of the variable frequency alternating current motor; and regulating and controlling the operation data of the variable-frequency alternating-current motor according to the comparison result.
Description
Technical Field
The utility model belongs to the field of range hoods, and particularly relates to a control method and a control system of a variable-frequency range hood and the variable-frequency range hood.
Background
At present, the alternating current motor of the range hood cannot realize larger effective air quantity and air pressure under the environment of a public flue with large resistance. Aiming at the defect that the alternating current motor cannot convert frequency, a frequency conversion range hood for adjusting the rotating speed of the motor by adopting a frequency conversion motor has been disclosed in the prior art. For example, the utility model creative name is an intelligent variable frequency range hood, the patent number is ZL201420826305.3, the intelligent variable frequency range hood disclosed in Chinese utility model patent with the grant bulletin number of CN 204373022U comprises a fume collecting hood, a control component and a fan component, wherein the control component comprises a power module, a system control module and a motor driving module which are electrically connected in sequence, a motor of the fan component is an alternating current variable frequency motor, the control component further comprises an environment detection module and a flue negative pressure detection module which are respectively connected between the power module and the system control module, the environment detection module is arranged at an air inlet of the fume collecting hood, and the flue negative pressure detection module is arranged at a fume outlet of the fan component. The intelligent variable frequency range hood adopts the alternating current variable frequency motor, and only one circuit board is used for adjusting the running speed of the alternating current variable frequency motor, thereby realizing the control of stepless speed change.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the control method and the control system of the variable frequency range hood are provided, the variable frequency range hood can realize large air quantity, high full pressure efficiency and high maximum static pressure, and the rotating speed of the fan can be adjusted in a large range.
In order to solve the technical problems, the embodiment of the utility model adopts the following technical scheme:
in a first aspect, an embodiment of the present utility model provides a control method for a variable frequency range hood, including:
collecting operation information of a variable-frequency alternating-current motor of the range hood;
comparing the operation information with stored setting information of the variable frequency alternating current motor;
and regulating and controlling the operation data of the variable-frequency alternating-current motor according to the comparison result.
Preferably, the operation information includes current or power.
As a preferred example, the step of adjusting and controlling the operation data of the variable frequency ac motor according to the comparison result includes:
if I C is smaller than I S, controlling the output power of the variable frequency alternating current motor to be P N1;
if I C is larger than I S, controlling the output power of the variable-frequency alternating-current motor to be P N;
i C is collected working current of the variable frequency alternating current motor, I S is stored set current of the variable frequency alternating current motor; p N1 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum static pressure; p N2 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum air quantity and full pressure efficiency.
In a second aspect, an embodiment of the present utility model provides a control system of a variable frequency range hood, including:
and the acquisition module is used for: the frequency conversion alternating current motor is used for collecting operation information of the variable frequency alternating current motor of the range hood;
and a comparison module: the control unit is used for comparing the operation information with stored setting information of the variable frequency alternating current motor;
and a regulation and control module: and the control unit is used for regulating and controlling the operation data of the variable-frequency alternating-current motor according to the comparison result.
As a preferable example, the comparing module is configured to compare the working current of the variable frequency ac motor with the stored set current of the variable frequency ac motor.
As a preferred example, the regulation module is specifically configured to:
if I C is smaller than I S, controlling the output power of the variable frequency alternating current motor to be P N1;
if I C is larger than I S, controlling the output power of the variable-frequency alternating-current motor to be P N;
i C is collected working current of the variable frequency alternating current motor, I S is stored set current of the variable frequency alternating current motor; p N1 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum static pressure; p N2 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum air quantity and full pressure efficiency.
In a third aspect, an embodiment of the present utility model provides a variable frequency range hood, including an ac variable frequency three-phase motor, a motor power supply intelligent power module, a current feedback module and a microprocessor controller, where the ac variable frequency three-phase motor is connected with the motor power supply intelligent power module, the motor power supply intelligent power module is connected with the current feedback module, the current feedback module is connected with the microprocessor controller, the microprocessor controller is connected with the motor power supply intelligent power module, and a control program is set in the microprocessor controller, and the control program is used to execute the control method.
As a preferred example, the variable-frequency range hood further comprises a power supply, and the power supply is respectively connected with the motor power supply intelligent power module and the micro-processing controller.
As a preferred example, the variable-frequency range hood further comprises a human-computer interface, wherein the micro-processing controller is connected with the human-computer interface through a communication protocol, and the human-computer interface is connected with a power supply.
Compared with the prior art, the control method and the control system of the variable frequency range hood and the variable frequency range hood can realize large air quantity, high full pressure efficiency and high maximum static pressure, and the rotating speed of the fan can be adjusted in a large range. The embodiment of the utility model carries out frequency conversion by detecting the current of the variable frequency alternating current motor in real time and comparing the current with the stored setting information of the variable frequency alternating current motor, outputs different powers, realizes large air quantity, high full-pressure efficiency and high maximum static pressure, and can adjust the rotating speed of the fan in a large range.
Drawings
FIG. 1 is a flow chart of a control method of an embodiment of the present utility model;
FIG. 2 is another flow chart of a control method of an embodiment of the present utility model;
FIG. 3 is a block diagram of a control system of an embodiment of the present utility model;
fig. 4 is a block diagram of a variable frequency range hood according to an embodiment of the present utility model.
Detailed Description
The technical scheme of the utility model is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a control method of a variable frequency range hood according to an embodiment of the present utility model includes:
s10, collecting operation information of a variable-frequency alternating-current motor of the range hood;
s20, comparing the operation information with stored setting information of the variable frequency alternating current motor;
s30, according to the comparison result, regulating and controlling the operation data of the variable-frequency alternating-current motor.
In this embodiment, by collecting operation information of the variable frequency ac motor of the range hood, for example, current or power of the variable frequency ac motor, the collected operation information is compared with stored setting information, and then operation data of the variable frequency ac motor is regulated. The embodiment of the utility model carries out frequency conversion by detecting the current of the variable frequency alternating current motor in real time and comparing the current with the stored setting information of the variable frequency alternating current motor so as to output different powers, thereby realizing large air quantity, high full-pressure efficiency and high maximum static pressure, and the rotating speed of the fan can be adjusted in a large range. Under the same air quantity mode, such as stir-frying, automatic cruising and pressurizing, strong wind and the like, P N or P N is output.
Preferably, as shown in fig. 2, the step S30 includes: if I C is smaller than I S, controlling the output power of the variable frequency alternating current motor to be P N1; if I C is larger than I S, controlling the output power of the variable-frequency alternating-current motor to be P N; i C is collected working current of the variable frequency alternating current motor, I S is stored set current of the variable frequency alternating current motor; p N1 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum static pressure; p N2 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum air quantity and full pressure efficiency.
In this preferred example, the currents of the variable frequency ac motor are compared. The output power of the variable frequency alternating current motor is changed by comparing the working current with the set current. When the working current is smaller than the set current, the output power of the variable frequency alternating current motor is regulated to P N. P N1 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum static pressure. When the working current is larger than the set current, the output power of the variable-frequency alternating-current motor is regulated to P N. P N2 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum air quantity and full pressure efficiency.
In the prior art, the maximum static pressure of the non-variable frequency motor is 300Pa, and the maximum static pressure of the variable frequency motor is 700Pa. The maximum static pressure can be further improved by frequency conversion and output of two different powers, and the maximum static pressure can reach 830Pa.
As shown in fig. 3, an embodiment of the present utility model further provides a control system of a variable frequency range hood, including:
and the acquisition module is used for: the frequency conversion alternating current motor is used for collecting operation information of the variable frequency alternating current motor of the range hood;
and a comparison module: the control unit is used for comparing the operation information with stored setting information of the variable frequency alternating current motor;
and a regulation and control module: and the control unit is used for regulating and controlling the operation data of the variable-frequency alternating-current motor according to the comparison result.
In the above embodiment, the acquisition module acquires real-time operation information of the variable frequency ac motor, and transmits the acquired information to the comparison module. The comparison module compares the collected operation information with the stored setting information of the variable frequency alternating current motor, and transmits the comparison result to the regulation and control module. And the regulation and control module regulates and controls the operation data of the variable-frequency alternating-current motor according to the comparison result. The variable-frequency alternating-current motor operates according to the operation instruction sent by the regulation and control module.
Preferably, the comparing module is configured to compare the working current of the variable frequency ac motor with the stored set current of the variable frequency ac motor. The comparison module transmits the comparison result to the regulation and control module. The comparison result is that the working current of the variable frequency alternating current motor is larger than the stored set current of the variable frequency alternating current motor, or the working current of the variable frequency alternating current motor is smaller than the stored set current of the variable frequency alternating current motor.
Preferably, the regulation module is specifically configured to: if I C is smaller than I S, controlling the output power of the variable frequency alternating current motor to be P N1; if I C is greater than I S, the output power of the variable frequency alternating current motor is controlled to be P N2. I C is collected working current of the variable frequency alternating current motor, I S is stored set current of the variable frequency alternating current motor; p N1 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum static pressure; p N2 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum air quantity and full pressure efficiency.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the apparatus embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments for relevant points.
As shown in fig. 4, the embodiment of the utility model further provides a variable frequency range hood, which comprises an ac variable frequency three-phase motor 7, a motor power supply intelligent power module 3, a current feedback module 4 and a microprocessor controller 5, wherein the ac variable frequency three-phase motor 7 is connected with the motor power supply intelligent power module 3, the motor power supply intelligent power module 3 is connected with the current feedback module 4, the current feedback module 4 is connected with the microprocessor controller 5, the microprocessor controller 5 is connected with the motor power supply intelligent power module 3, and a control program is arranged in the microprocessor controller 5 and is used for executing the control method of the previous embodiment.
In the embodiment, the variable frequency range hood comprises an alternating current variable frequency three-phase motor 7, a motor power supply intelligent power module 3, a current feedback module 4 and a micro-processing controller 5. The alternating-current variable-frequency three-phase motor 7 is connected with the motor power supply intelligent power module 3, and the motor power supply intelligent power module 3 can realize intelligent power supply and intelligent detection of motor current or power. The motor power supply intelligent power module 3 can select a three-phase motor frequency converter with model number of SDM06C60 FB. The micro-processing controller 5 can select a singlechip with the model STM8S005K6T 6.
The motor power supply intelligent power module 3 is connected with the current feedback module 4, and the current feedback module 4 is connected with the microprocessor controller 5. The motor power supply intelligent power module 3 transmits the working current of the alternating current variable frequency three-phase motor to the micro-processing controller 5 through the current feedback module 4. The control program in the microprocessor controller 5 executes the control method of the foregoing embodiment to obtain the operating power of the ac variable frequency three-phase motor 7. The microprocessor controller 5 is connected with the motor power supply intelligent power module 3. The microprocessor controller 5 uses the obtained running power of the ac variable frequency three-phase motor 7 as a running command, and transmits the running power to the ac variable frequency three-phase motor 7 through the motor power supply intelligent power module 3. The ac variable frequency three-phase motor 7 operates according to the operating power in the operating command.
The control program in the microprocessor controller executes the control method of the previous embodiment to obtain the running power of the ac variable frequency three-phase motor. Specifically, if I C is smaller than I S, the microprocessor controller outputs a data packet corresponding to P N1 to power the intelligent power module, so as to control the output power of the ac variable-frequency three-phase motor to be P N1. If I C is greater than I S, the microprocessor controller outputs a data packet corresponding to P N to the intelligent power module for supplying power to the motor, so as to control the output power of the alternating-current variable-frequency three-phase motor to be P N.
In the embodiment, the output current of the motor power supply intelligent power module is fed back to the micro-processing controller, and is processed by the micro-processing controller, and a corresponding signal is output to the motor power supply intelligent power module, so that the high-efficiency output of the alternating-current variable-frequency three-phase motor is controlled in a closed loop manner.
Preferably, the variable frequency range hood further comprises a power supply 2. The power supply 2 is respectively connected with the motor power supply intelligent power module 3 and the microprocessor controller 5. The power supply 2 supplies power for the operation of the motor power supply intelligent power module 3 and the operation of the microprocessor control 5. The power supply 2 can be connected with the mains supply through a rectifier 1.
Preferably, the variable frequency range hood further comprises a human-computer interface 6, wherein the micro-processing controller 5 is connected with the human-computer interface 6 through a communication protocol, and the human-computer interface 6 is connected with the power supply 2. Through the human-computer interface 6, the user can transmit the operation instruction to the micro-processing controller 5, and the micro-processing controller 5 sends the operation instruction to the alternating current variable frequency three-phase motor through the motor power supply intelligent power module 3.
The scheme uses a current feedback module to detect current. If the current transformer for detecting the current of the motor is adopted to detect the current, or the current is converted into power to be detected, the power is used as a feedback signal. Are considered to be within the scope of the present utility model.
Compared with the prior art, the variable frequency is realized through the frequency conversion module combined with the commercial power, the speed regulation winding serial connection speed regulation of comparative energy consumption is not needed during frequency conversion, the frequency conversion efficiency is higher, the frequency can be rapidly changed to realize the adjustment of the range of the rotating speed of the range hood, and the rotating speed of the motor can be greatly adjusted to increase the maximum static pressure under severe working conditions.
Those skilled in the art will appreciate that the methods or systems of the above-described embodiments may be implemented by computer program instructions. The computer program instructions are loaded onto a programmable data processing apparatus, such as a computer, to execute corresponding instructions on the programmable data processing apparatus for implementing the functions implemented in the method or system of the above-described embodiments.
Those skilled in the art can make non-inventive technical modifications to the present application based on the above-described embodiments without departing from the spirit of the present utility model. Such modifications are still considered to be within the scope of the claims of this application.
Claims (5)
1. The control method of the variable-frequency range hood is characterized by comprising the following steps of:
collecting operation information of a variable-frequency alternating-current motor of the range hood;
comparing the operation information with stored setting information of the variable frequency alternating current motor;
according to the comparison result, regulating and controlling the operation data of the variable frequency alternating current motor, comprising: if the IC IS smaller than the IS, controlling the output power of the variable-frequency alternating-current motor to be PN1; if the IC IS larger than the IS, controlling the output power of the variable-frequency alternating-current motor to be PN2; the IC IS the collected working current of the variable frequency alternating current motor, and IS IS the stored set current of the variable frequency alternating current motor; PN1 is the output power of the variable-frequency alternating-current motor under the condition of meeting the maximum static pressure; PN2 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum air quantity and full pressure efficiency.
2. The control method of a variable frequency range hood according to claim 1, wherein the operation information includes current or power.
3. A control system of a variable frequency range hood, comprising:
and the acquisition module is used for: the frequency conversion alternating current motor is used for collecting operation information of the variable frequency alternating current motor of the range hood;
and a comparison module: the control unit is used for comparing the operation information with stored setting information of the variable frequency alternating current motor;
and a regulation and control module: the control unit is used for regulating and controlling the operation data of the variable-frequency alternating-current motor according to the comparison result;
the regulation and control module is specifically used for: if the IC IS smaller than the IS, controlling the output power of the variable-frequency alternating-current motor to be PN1; if the IC IS larger than the IS, controlling the output power of the variable-frequency alternating-current motor to be PN2; the IC IS the collected working current of the variable frequency alternating current motor, and IS IS the stored set current of the variable frequency alternating current motor; PN1 is the output power of the variable-frequency alternating-current motor under the condition of meeting the maximum static pressure; PN2 is the output power of the variable frequency alternating current motor under the condition of meeting the maximum air quantity and full pressure efficiency.
4. A control system for a variable frequency range hood according to claim 3, wherein the comparison module is configured to compare the operating current of the variable frequency ac motor with a stored set current of the variable frequency ac motor.
5. The variable frequency range hood is characterized by comprising an alternating current variable frequency three-phase motor, a motor power supply intelligent power module, a current feedback module and a micro-processing controller, wherein the alternating current variable frequency three-phase motor is connected with the motor power supply intelligent power module, the motor power supply intelligent power module is connected with the current feedback module, the current feedback module is connected with the micro-processing controller, the micro-processing controller is connected with the motor power supply intelligent power module, and a control program is arranged in the micro-processing controller and is used for executing the control method according to any one of claims 1-2;
also comprises a power supply source and a power supply, the power supply is respectively connected with the motor power supply intelligent power module and the micro-processing controller;
the micro-processing controller is connected with the human-computer interface through a communication protocol, and the human-computer interface is connected with a power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910261025.XA CN109855144B (en) | 2019-04-02 | 2019-04-02 | Control method and control system of variable-frequency range hood and variable-frequency range hood |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910261025.XA CN109855144B (en) | 2019-04-02 | 2019-04-02 | Control method and control system of variable-frequency range hood and variable-frequency range hood |
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| CN109855144A CN109855144A (en) | 2019-06-07 |
| CN109855144B true CN109855144B (en) | 2024-02-13 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486773B (en) * | 2019-09-30 | 2020-11-24 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method of range hood and range hood |
| CN112377959B (en) * | 2020-10-20 | 2022-11-15 | 华帝股份有限公司 | Motor control method of variable-frequency range hood |
| CN114151837A (en) * | 2021-11-11 | 2022-03-08 | 武汉沁云科技有限公司 | Multifunctional fan control system |
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| CN203352177U (en) * | 2013-03-11 | 2013-12-18 | 陈仲璀 | Power factor dynamic-tracking voltage regulating and power saving device of beam-pumping unit |
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