CN110118375B - Cooperative control method for electric heating device and circulating fan - Google Patents
Cooperative control method for electric heating device and circulating fan Download PDFInfo
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- CN110118375B CN110118375B CN201910391948.7A CN201910391948A CN110118375B CN 110118375 B CN110118375 B CN 110118375B CN 201910391948 A CN201910391948 A CN 201910391948A CN 110118375 B CN110118375 B CN 110118375B
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- heating device
- electric heating
- circulating fan
- brushless motor
- direct current
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/022—Air heaters with forced circulation using electric energy supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
- F24H9/2071—Arrangement or mounting of control or safety devices for air heaters using electrical energy supply
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Central Heating Systems (AREA)
Abstract
The invention discloses a cooperative control method of an electric heating device and a circulating fan, which is used for controlling the circulating fan driven by a direct current brushless motor and a wind heating bath heater of the electric heating device. According to the invention, after the direct current brushless motor is operated at a certain speed, the heating device is effectively started within a certain time, so that the safety problems of fire and the like caused by dry burning starting of the heating device are avoided, the temperature control precision is high, and the performance is stable.
Description
Technical Field
The invention relates to the technical field of air conditioning control, in particular to a cooperative control method of an electric heating device and a circulating fan in a bathroom heater.
Background
With the development of science and technology and the improvement of living standard of people, the requirements of comfort and safety of the bathroom heater for people are gradually improved, and the warm air bathroom heater is widely popularized in various residences. Compared with the traditional lamp heating bathroom heater, the hot air bathroom heater has the advantages that the main functional elements are the circulating fan and the heating unit, air in a bathroom is sucked into the bathroom heater through the circulating fan, the air is blown back into a bathroom space through the circulating fan after being heated by the heating unit, and the high-power lamp heating mode is replaced by the hot air mode which is comfortable to use and good in portable effect so as to achieve heating.
However, most of such warm air bath heaters on the market have low safety, wherein the adopted heating unit and the circulating fan are controlled independently, the electric heating device operates under the abnormal operation conditions of rotation blockage, phase loss, aging, shaft body slipping, blade resistance increase and the like of the circulating fan, the heating value of the electric heating device is easily larger than the heat taken away by the circulating fan in unit time, so that the local air in the box body structure of the warm air bath heater is rapidly heated, local components of the bath heater are overheated to cause damage, safety accidents such as dry burning and fire can occur in serious cases, and great potential safety hazards are brought to users; some manufacturers, in order to reduce the cost, also use some electric heaters of small brands or brands to heat, which increases the risk.
The existing common solution is to add a heat dissipation circulating fan to perform auxiliary heat dissipation, which is a purely physical heat dissipation mode, and the heat dissipation circulating fan needs to be manually turned on while the heater is turned on, which is very troublesome, and users often neglect the point in the use process, so that the bath heater can be damaged, and the service life of the bath heater can be reduced.
If a control method which is economical and can not cause the electric heating device to be burnt dry to cause fire can be designed to be applied to the bathroom heater system, the control method has practical value and economic value.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a cooperative control method of an electric heating device and a circulating fan, aiming at the situation that the control of the electric heating device in the existing bathroom heater equipment is relatively lagged, the bathroom heater circulating fan is used for controlling the safe opening and closing of the electric heating device of the bathroom heater, so that the safety and the reliability of the system are improved, and the defects in the technical background are overcome.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a cooperative control method of an electric heating device and a circulating fan is used for controlling a warm air bath heater system, the warm air bath heater system comprises the circulating fan, the electric heating device, a time sensor and a position sensor, wherein the circulating fan is arranged in an air duct of the warm air bath heater, is driven by a direct current brushless motor and is used for manufacturing circulating air flow in a cavity of the warm air bath heater; the electric heating device is arranged at the air outlet end of the warm air bathroom heater and is used for heating air sucked into the bathroom heater; the time sensor is used for monitoring and recording the running time of the direct current brushless motor; the position sensor is arranged beside the direct current brushless motor or in the direct current brushless motor and used for monitoring and recording the relative position relation of a permanent magnet rotor and a multi-pole winding stator in the direct current brushless motor. The cooperative control method responds to a starting instruction, obtains equipment running time through a time sensor, obtains the rotating speed of the direct current brushless motor through the induction of the rotor and position change of the direct current brushless motor and the reading of the time sensor through a position sensor, and effectively starts the electric heating device within set time so as to control the electric heating device.
As a further improvement, the selection criteria of the circulating fan and the electric heating device are as follows: the circulating fan is configured according to the heating value of the electric heating device in unit time, and the heat quantity taken away by air circulation in unit time is not less than the heating value of the electric heating device in unit time under the operation state of the circulating fan, so that the heat quantity is prevented from accumulating in the shell of the warm air bathroom heater.
The cooperative control method specifically comprises the following two stages:
a signal pickup stage: the method comprises the steps that single-point position change of a direct current brushless motor rotor is obtained through a position sensor, interval signals of the direct current brushless motor rotor are obtained according to recording intervals of a time sensor, and meanwhile, the time sensor conducts timing when the direct current brushless motor obtains starting signals.
And a signal processing stage: converting the interval signal acquired by the position sensor through a conversion circuit to obtain the real-time rotating speed R of the circulating fan, acquiring the running time T of the direct current brushless motor through a time sensor, and comparing the running time T of the direct current brushless motor with the running time T required by the circulating fan from starting to running stably0And controlling the operation of the electric heating device:
when the running time T of the direct current brushless motor is less than or equal to T0Controlling the direct-current brushless motor to drive the circulating fan to continuously run, and simultaneously closing the electric heating device;
when the running time T of the direct current brushless motor is more than or equal to T0Controlling the direct current brushless motor to drive the circulating fan to continuously operate, and meanwhile judging whether the real-time rotating speed R of the operation of the circulating fan is larger than or equal to the preset rotating speed R or not1：
If yes, starting the electric generating device;
if not, controlling the circulating fan to stop running and reporting a fault prompt.
As a further limitation, the manner of acquiring the rotation speed of the rotor of the dc brushless motor by the position sensor is as follows: and selecting a corresponding point on a multi-pole winding stator of the DC brushless motor for marking, and triggering to generate a position sensing signal when a permanent magnet rotor of the DC brushless motor rotates to the selected position of the multi-pole winding stator and vertically cuts a magnetic line of force.
As a further limitation, the preset rotation speed R1When the circulating fan and the electric heating device are configured, the critical operation rotating speed of the circulating fan with the current specification when the heat productivity of the electric heating device in unit time is completely taken away is related to the size and the model of the blades of the circulating fan and the power of the connected direct current brushless motor, and is obtained through actual measurement.
As a further limitation, the starting time of the circulating fan is only used for judging whether the electric heating device is started within the specified time, and the electric heating device is not counted after being started.
As a further limitation, the device is further provided with a manual switch of the electric heating device, and after the manual switch of the electric heating device turns off the electric heating device, the detection data of the time sensor is forced to return to zero and stop counting.
By way of further limitation, the operating voltage of the multi-pole winding stator in the brushless dc motor is provided by an electronic switching circuit controlled by the position sensor output.
According to the cooperative control method of the electric heating device and the circulating fan, the electric heating device of the bathroom heater is effectively and reasonably controlled to be started, so that the occurrence of safety accidents such as dry burning, fire and the like of the electric heating device under the condition that the circulating fan is damaged is avoided, and the use safety of the air-heating bathroom heater is improved.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
FIG. 2 is a flow chart of the cooperative control of the bathroom heater heating device and the circulating fan.
Fig. 3 is an information control processing flow diagram of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Referring to fig. 1, 2 and 3, a preferred embodiment of a cooperative control method of an electric heating device and a circulating fan is shown, the cooperative control method can be used for controlling a specific warm air bathroom heater system, and the warm air bathroom heater system comprises the circulating fan, the electric heating device, a time sensor and a position sensor.
The circulating fan is arranged in an air duct of the warm air bathroom heater, is driven by the direct current brushless motor and is used for manufacturing circulating air flow in a cavity of the warm air bathroom heater; the electric heating device is arranged at the air outlet end of the warm air bathroom heater and used for heating air sucked into the bathroom heater.
The cooperative control method of the embodiment responds to the starting instruction, and is specifically controlled in the following way:
s1: the brushless DC motor includes permanent magnet rotor, multi-pole winding stator, time sensor and position sensor, the position sensor commutates the current of the stator winding according to the change of the rotor position, and the current is switched according to the sequence (that is, the position of the rotor magnetic pole relative to the stator winding is detected, and the position sensing signal is generated at the selected position, and the signal is processed by the signal conversion circuit to control the power switch circuit, and the winding current is switched). In this process, the operating voltage of the multi-pole winding stator is provided by an electronic switching circuit controlled by the position sensor output.
S2: entering an information control processing stage, controlling the direct current brushless motor to operate at a specified rotating speed according to the control, and further determining the real-time rotating speed R of the circulating fan according to the change sequence of the position sensor1And finally obtaining the stable current circulating fan running rotating speed R through data filtering processing.
S3: the running time T of the direct current brushless motor is obtained through the time sensor, and the running time T of the direct current brushless motor is compared with the running time T required by the circulating fan from starting to running stably0And controlling the operation of the electric heating device:
when the running time T of the direct current brushless motor is less than or equal to T0Control ofThe direct current brushless motor drives the circulating fan to continuously operate, and the electric heating device is turned off;
when the running time T of the direct current brushless motor is more than or equal to T0Controlling the direct current brushless motor to drive the circulating fan to continuously operate, and meanwhile judging whether the real-time rotating speed R of the operation of the circulating fan is larger than or equal to the preset rotating speed R or not1：
If yes, starting the electric generating device;
if not, the circulating fan is controlled to stop running and a fault prompt is reported.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A cooperative control method of an electric heating device and a circulating fan is used for controlling a warm air bath heater, the warm air bath heater comprises the circulating fan, the electric heating device, a time sensor and a position sensor,
the circulating fan is arranged in an air duct of the warm air bath heater, is driven by the direct current brushless motor and is used for manufacturing circulating air flow in a cavity of the warm air bath heater;
the electric heating device is arranged at the air outlet end of the warm air bathroom heater and is used for heating air sucked into the bathroom heater;
the time sensor is used for monitoring and recording the running time of the direct current brushless motor;
the position sensor is arranged beside the direct current brushless motor or in the direct current brushless motor and used for monitoring and recording the relative position relation between a permanent magnet rotor and a multi-pole winding stator in the direct current brushless motor;
the cooperative control method of the electric heating device and the circulating fan responds to a starting instruction, obtains equipment running time through a time sensor, obtains the rotating speed of the direct current brushless motor through the change of a rotor and a position of the direct current brushless motor induced by a position sensor and the reading of the time sensor, and effectively starts the electric heating device in set time so as to control the electric heating device, and is characterized by comprising the following two stages:
a signal pickup stage: acquiring single-point position change of a direct current brushless motor rotor through a position sensor, acquiring interval signals of the direct current brushless motor rotor according to recording intervals of a time sensor, and timing by the time sensor when the direct current brushless motor acquires starting signals;
and a signal processing stage: converting the interval signal acquired by the position sensor through a conversion circuit to obtain the real-time rotating speed R of the circulating fan, acquiring the running time T of the direct current brushless motor through a time sensor, and comparing the running time T of the direct current brushless motor with the running time T required by the circulating fan from starting to running stably0And controlling the operation of the electric heating device:
when the running time T of the DC brushless motor is less than or equal to T0Controlling the direct-current brushless motor to drive the circulating fan to continuously run, and simultaneously closing the electric heating device;
when the running time T of the DC brushless motor is more than or equal to T0Controlling the direct current brushless motor to drive the circulating fan to continuously operate, and meanwhile judging whether the real-time rotating speed R of the operation of the circulating fan is larger than or equal to the preset rotating speed R or not1：
If yes, starting the electric generating device;
if not, the circulating fan is controlled to stop running and a fault prompt is reported.
2. The cooperative control method of the electric heating device and the circulating fan according to claim 1, wherein the manner of acquiring the rotation speed of the rotor of the dc brushless motor by the position sensor is as follows: and selecting a corresponding point on a multi-pole winding stator of the DC brushless motor for marking, and triggering to generate a position sensing signal when a permanent magnet rotor of the DC brushless motor rotates to the selected position of the multi-pole winding stator and vertically cuts a magnetic line of force.
3. The cooperative control method of the electric heating device and the circulating fan as claimed in claim 1, wherein the preset rotation speed R1When the circulating fan and the electric heating device are configured, the critical operation rotating speed of the circulating fan with the current specification is taken away when the heat productivity of the electric heating device in unit time is completely taken away.
4. The cooperative control method of the electric heating device and the circulating fan as claimed in claim 1, wherein the start time of the circulating fan is only used for judging whether the electric heating device is started within a specified time, and the electric heating device is not counted after being started.
5. The cooperative control method of the electric heating device and the circulating fan as claimed in claim 1, wherein a manual switch of the electric heating device is further provided on the equipment, and after the manual switch of the electric heating device turns off the electric heating device, the detection data of the time sensor is forcibly zeroed and the counting is stopped.
6. The cooperative control method of an electric heating device and a circulating fan as claimed in claim 1, wherein the operating voltage of the multi-pole winding stator in the brushless DC motor is provided by an electronic switching circuit controlled by the output of a position sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910391948.7A CN110118375B (en) | 2019-05-13 | 2019-05-13 | Cooperative control method for electric heating device and circulating fan |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910391948.7A CN110118375B (en) | 2019-05-13 | 2019-05-13 | Cooperative control method for electric heating device and circulating fan |
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| CN110118375A CN110118375A (en) | 2019-08-13 |
| CN110118375B true CN110118375B (en) | 2021-05-28 |
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| CN201910391948.7A Active CN110118375B (en) | 2019-05-13 | 2019-05-13 | Cooperative control method for electric heating device and circulating fan |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113531913A (en) * | 2021-06-28 | 2021-10-22 | 青岛海尔空调器有限总公司 | Safety protection control method and device of warm air blower and warm air blower |
| CN113587425A (en) * | 2021-08-11 | 2021-11-02 | 深圳市科飞创科技有限公司 | Domestic electric fan heater of intelligence wide angle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201307761A (en) * | 2011-08-12 | 2013-02-16 | Grand Mate Co Ltd | Safety detection method for power vented water heater |
| CN205014454U (en) * | 2015-09-25 | 2016-02-03 | 苏州古尚电器科技有限公司 | Multi -functional dc -inverter room heater |
| CN206817612U (en) * | 2017-06-19 | 2017-12-29 | 苏州古尚电器科技有限公司 | Double air channel DC frequency-changing bathroom heating devices |
| CN207394948U (en) * | 2017-09-11 | 2018-05-22 | 普天智能照明研究院有限公司 | A kind of bathroom Heat system by heating air |
| CN207674567U (en) * | 2018-01-08 | 2018-07-31 | 奥普家居股份有限公司 | A kind of Multifunction heater in bathroom |
| CN207853794U (en) * | 2018-02-12 | 2018-09-11 | 中山市嘉科电子有限公司 | A kind of super bath ceiling appliance control circuit |
-
2019
- 2019-05-13 CN CN201910391948.7A patent/CN110118375B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201307761A (en) * | 2011-08-12 | 2013-02-16 | Grand Mate Co Ltd | Safety detection method for power vented water heater |
| CN205014454U (en) * | 2015-09-25 | 2016-02-03 | 苏州古尚电器科技有限公司 | Multi -functional dc -inverter room heater |
| CN206817612U (en) * | 2017-06-19 | 2017-12-29 | 苏州古尚电器科技有限公司 | Double air channel DC frequency-changing bathroom heating devices |
| CN207394948U (en) * | 2017-09-11 | 2018-05-22 | 普天智能照明研究院有限公司 | A kind of bathroom Heat system by heating air |
| CN207674567U (en) * | 2018-01-08 | 2018-07-31 | 奥普家居股份有限公司 | A kind of Multifunction heater in bathroom |
| CN207853794U (en) * | 2018-02-12 | 2018-09-11 | 中山市嘉科电子有限公司 | A kind of super bath ceiling appliance control circuit |
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