CN110925822A - Filter element installation detection prompting method of central purification system - Google Patents
Filter element installation detection prompting method of central purification system Download PDFInfo
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- CN110925822A CN110925822A CN201911066567.8A CN201911066567A CN110925822A CN 110925822 A CN110925822 A CN 110925822A CN 201911066567 A CN201911066567 A CN 201911066567A CN 110925822 A CN110925822 A CN 110925822A
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- filter element
- flue
- installation
- purification system
- prompting method
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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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- 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
- F24C15/2035—Arrangement or mounting of filters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Ventilation (AREA)
Abstract
A central purification system comprises range hoods installed on different floors, air outlets of each range hood are respectively communicated with a common flue through a smoke pipe, check valves are installed in the smoke pipes, a flue fan is installed at the top of the common flue, a purification device with a filter element is installed at the front end of the flue fan, a pressure sensor is installed at the front end of the purification device, and the filter element installation and detection prompting method comprises a filter element initial installation and detection prompting method and a filter element maintenance and replacement detection prompting method. The invention has the advantages that: the filter element installation detection prompting method of the central purification system adopts a resistance coefficient detection principle, judges whether the purification device package is removed and the filter element installation direction is correct or not by comparing the pressure value of the front end of the purification device after the flue fan is opened with the reference pressure value, and can provide a simpler and more effective filtration performance guarantee for the smoke exhaust system of a whole building user under the condition of not increasing the cost.
Description
Technical Field
The invention relates to a central purification system, in particular to a filter element installation detection prompting method of the central purification system.
Background
At present, most of high-rise houses adopt a centralized smoke exhaust mode, an indoor range hood is connected with a public flue through a smoke pipe and a check valve, and oil smoke in a kitchen is exhausted into the public flue through the smoke pipe through the indoor range hood. However, the cooking habit of big oil smoke of Chinese people and the current situation of big air volume and big air pressure pursued by the existing range hood cause the pressure distribution in the public flue to be extremely uneven, the pressure in the flue to be big, and simultaneously, the problems of unsmooth smoke discharge and kitchen noise faced by users can often occur due to improper installation of the smoke tube and the check valve. In addition, for the high-rise houses with finish decoration, the smoke absorbing effect is generally poor due to the problems that most of the indoor range hoods purchased by the building have poor performance, the quality of a flue cannot be guaranteed, the smoke pipes are not well installed, the check valves are unreasonable to select and purchase, and the like.
The user side angle-adjustable valve is combined with a main fan at the outlet of a roof flue to intensively filter and discharge in recent years, and the user side angle-adjustable valve is applied to certain finely-finished buildings; however, when the user or property uses or changes the filter screen initially, the filter screen outer packaging bag is not removed in time, or the installation direction is wrong, so that the filtering and cleaning effect of the equipment is invalid, the filter element is reduced, or part of the filter element is scrapped in advance.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a filter element installation detection prompting method for a central purification system, which detects whether a purification device package is removed and whether the installation direction is correct or not by adopting a resistance coefficient detection principle aiming at the current situation of the prior art
The technical scheme adopted by the invention for solving the technical problems is as follows: this central purification system's filter core installation detection suggestion method, central purification system is including installing the range hood at different floors, and the air outlet of every range hood is all linked together through tobacco pipe and common flue separately all install the check valve in the tobacco pipe, and the flue fan is installed at common flue top, the purifier of taking the filter core is installed to flue fan front end purifier's front end is installed pressure sensor, its characterized in that filter core installation detection suggestion method includes the filter core and installs the detection suggestion method for the first time, the filter core is installed the detection suggestion method for the first time and is included the following step:
1) after the system and the filter element are installed, starting for the first time;
2) running a self-checking program for judging whether the installation of the filter element is correct or not;
3) after installation and debugging, firstly opening any check valve to a certain angle, closing other check valves, opening the flue fan to a default gear Ti for operation, and recording the starting time t 1;
4) reading the pressure value at the front end of the purification device through the pressure sensor;
5) judging whether the current pressure is smaller than the reference pressure, if not, judging that the filter element package is not dismantled;
6) if yes, calculating the current rotating speed ni;
7) judging whether ni is larger than the upper limit na, if so, judging that the flue resistance is large and the maintenance is needed;
8) if not, continuously judging whether ni is smaller than nb, and if so, determining that the filter element is reversely mounted;
9) if not, the filter element is considered to be installed correctly;
10) written to storage as a reference.
Preferably, the flue gas fan is provided with a motor current and power detection module, and the starting time t1 is recorded by the motor current and power detection module in the step 3). Because the rotating speed of the impeller dirt under a given gear Ti is influenced by a certain degree, the actual rotating speed of the impeller running at the same gear after the dirt is fluctuated, and further the judgment of flue resistance or whether a filter element is reversely mounted is influenced, so that whether the impeller dirt is judged in the normal use process can be judged by using the starting process time of a motor, and the reliability is high, and the full automation is realized.
Further preferably, in step 6), the current rotation speed ni is calculated by detecting a back electromotive force or a rotation speed sensor.
Further preferably, the method for prompting installation, detection and replacement of the filter element of the central purification system further comprises a method for prompting maintenance and replacement of the filter element, the flue gas blower is provided with an impeller, and the method for prompting detection and replacement of the filter element comprises the following steps:
①, initial start after filter element replacement;
②, running a self-checking program for whether the installation of the filter element is correct;
③, after installation and debugging, firstly opening any check valve to a certain angle, closing other check valves, opening the flue fan to a default gear Ti for operation, and recording the starting time t 2;
④, reading the pressure value at the front end of the purification device through the pressure sensor;
⑤, judging whether the current pressure is less than the reference pressure, if not, judging that the filter element package is not removed
⑥, if yes, calculating the current rotation speed ni;
⑦, judging whether ni is larger than the upper limit na, if so, judging that the flue resistance is large and the maintenance is needed;
⑧, if not, continuously judging whether ni is smaller than nb, if so, considering the filter element to be reversely mounted;
⑨, if not, the filter element is considered to be installed correctly;
⑩, comparing the starting time t1 recorded in the step 3) with the starting time t2 recorded in the step ③ to determine whether the impeller needs to be maintained;
In order to control the opening angle of the valve plate of the check valve, the check valve comprises the valve plate and a valve plate control motor for controlling the opening and closing of the valve plate.
In order to detect the opening angle of the valve plate of the check valve, a detection module for detecting the opening angle of the valve plate is mounted on the smoke pipe.
Compared with the prior art, the invention has the advantages that: the filter element installation detection prompting method of the central purification system adopts a resistance coefficient detection principle, whether the purification device package is removed and the filter element installation direction is correct is judged by comparing the pressure value of the front end of the purification device with the reference pressure value after the flue fan is opened, and the simple and effective filtering performance guarantee is provided for the smoke exhaust system of a whole building user under the condition of not increasing the cost.
Drawings
FIG. 1 is a schematic view of a mounting structure of a single range hood according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a central purification system according to an embodiment of the present invention;
FIG. 3 is a structural sectional view of a range hood according to an embodiment of the present invention;
FIG. 4 is a logic control diagram of a method for detecting and prompting initial installation of a filter element according to an embodiment of the present invention;
fig. 5 is a logic control diagram of a method for prompting detection of a service replacement filter cartridge according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 3, the central purification system of the present embodiment includes range hoods 1 installed on different floors, each of the air outlets of the range hoods 1 is respectively communicated with a common flue 3 through a smoke tube 2, and a fire damper 9 is installed at an outlet of the smoke tube 2. The smoke tube 2 is internally provided with check valves 4, each check valve 4 comprises a valve plate 41 and a valve plate control motor 42 for controlling the opening and closing of the valve plate 41, and the smoke tube 2 is provided with a detection module 8 for detecting the opening angle of the valve plate 41. The top of the common flue 3 is provided with a flue fan 5, the flue fan 5 forms a booster fan, the flue fan 5 is provided with an impeller (not shown in the figure), the front end of the flue fan 5 is provided with a purification device 6 with a filter element (not shown in the figure), the front end of the purification device 6 is provided with a pressure sensor 7, and the pressure sensor 7 is used for detecting the pressure at the inlet of the flue fan 5.
As shown in fig. 3, the range hood 1 of the present embodiment has a fan 11, but the system may also adopt a structure of the range hood without a fan.
As shown in fig. 4, the filter element installation detection prompting method of the present embodiment includes a filter element initial installation detection prompting method, and the filter element initial installation detection prompting method includes the following steps:
1) after the system and the filter element are installed, starting for the first time;
2) running a self-checking program for judging whether the installation of the filter element is correct or not;
3) after installation and debugging, firstly opening any check valve to a certain angle, closing other check valves, opening the flue fan to a default gear Ti for operation, and recording the starting time t 1;
4) reading the pressure value at the front end of the purification device through the pressure sensor;
5) judging whether the current pressure is smaller than the reference pressure, if not, judging that the filter element package is not dismantled;
6) if yes, calculating the current rotating speed ni;
7) judging whether ni is larger than the upper limit na, if so, judging that the flue resistance is large and the maintenance is needed;
8) if not, continuously judging whether ni is smaller than nb, and if so, determining that the filter element is reversely mounted;
9) if not, the filter element is considered to be installed correctly;
10) written to storage as a reference.
The flue gas blower 5 of the embodiment is provided with a motor current and power detection module, and the starting time t1 is recorded by the motor current and power detection module in the step 3).
The rotating speed of the impeller dirt at a given gear Ti is influenced to a certain extent, the actual rotating speed of the impeller running at the same gear after the dirt is fluctuated, and further the judgment of flue resistance or whether a filter element is reversely mounted is influenced, so that whether the impeller dirt is judged in the normal use process can be judged by using the starting process time of a motor, the reliability is high, and the full-automatic impeller cleaning machine is full-automatic.
The method for judging the starting process of the motor comprises the following steps:
generally, a motor needs a period of time from start to steady state from rest, because the motor is an inductive element, the overall reactance is small during initial start, the current can be 5-7 times larger than the rated current, the starting torque about 2 times of the rated torque is generated to drag the rotor and the auxiliary impeller thereof to rotate, the counter electromotive force caused by the inductance is increased along with the continuous increase of the rotating speed of the motor, the overall reactance (the sum of the inductive reactance and the resistive reactance) is increased, the starting current is continuously reduced, the starting torque is continuously reduced until the power torque can be balanced with the resistance torque caused by the load, the load current flows through the rotor of the motor, and the no-load current flows if the motor is in no-load state. The load of the motor during the starting process is not related to the starting current, but the time of the motor reaching the rated current is influenced, the load starting can increase the time of the whole starting process of the motor, and the time of the starting current passing through the motor winding can be prolonged, namely, the operation mode of the load starting can lead the winding to be in a large current passing state for a long time. The motor load increases after the impeller is dirty, and the corresponding starting time is prolonged.
Therefore, the current (or power) detection module can be adopted to monitor the current or power of the power supply line of the motor, the time from starting (current 0) to stable operation (current multi-time point is relatively stable) is calculated, whether the impeller needs to be cleaned and maintained or not is conveniently judged, and a consumer is prompted to contact after-sales personnel for cleaning and maintenance.
The following points are also explained:
and 5) judging that the filter element package is not detached, which means that the negative pressure is not effectively transmitted. In the step 6), the motor speed ni of the current flue fan 5 can be calculated by detecting the counter electromotive force or a speed sensor. In the step 8), under the condition of reverse installation of the filter element, the resistance of the filter element is small, and the filtering capability is poor. The purification device for most conditions in the step 10) is a pre-filter and is arranged at the front end of the impeller, so that the impeller is well protected, and the impeller does not need to be maintained until the service life of the general purification device reaches the end, so that the impeller is judged to be more appropriate after the filter element is replaced.
As shown in fig. 5, the method for prompting installation, detection and replacement of a filter element in the present embodiment further includes a method for prompting maintenance and replacement of a filter element, and the method for prompting detection and replacement of a filter element includes the following steps:
①, initial start after filter element replacement;
②, running a self-checking program for whether the installation of the filter element is correct;
③, after installation and debugging, firstly opening any check valve to a certain angle, closing other check valves, opening the flue fan to a default gear Ti for operation, and recording the starting time t 2;
④, reading the pressure value at the front end of the purification device through the pressure sensor;
⑤, judging whether the current pressure is less than the reference pressure, if not, judging that the filter element package is not removed
⑥, if yes, calculating the current rotation speed ni;
⑦, judging whether ni is larger than the upper limit na, if so, judging that the flue resistance is large and the maintenance is needed;
⑧, if not, continuously judging whether ni is smaller than nb, if so, considering the filter element to be reversely mounted;
⑨, if not, the filter element is considered to be installed correctly;
⑩, comparing the starting time t1 recorded in the step 3) with the starting time t2 recorded in the step ③ to determine whether the impeller needs to be maintained;
Claims (6)
1. The utility model provides a central purification system's filter core installation detection suggestion method, central purification system is including installing range hood (1) at different floors, and the air outlet of every range hood (1) all is linked together through tobacco pipe (2) and public flue (3) separately all install check valve (4) in tobacco pipe (2), and flue fan (5) are installed at public flue (3) top, and purifier (6) of taking the filter core are installed to flue fan (5) front end pressure sensor (7) are installed to the front end of purifier (6), its characterized in that filter core installation detection suggestion method includes that the filter core is installed for the first time and is detected the suggestion method, the filter core is installed for the first time and is detected the suggestion method and includes following step:
1) after the system and the filter element are installed, starting for the first time;
2) running a self-checking program for judging whether the installation of the filter element is correct or not;
3) after installation and debugging, firstly opening any check valve to a certain angle, closing other check valves, opening the flue fan to a default gear Ti for operation, and recording the starting time t 1;
4) reading the pressure value at the front end of the purification device through the pressure sensor;
5) judging whether the current pressure is smaller than the reference pressure, if not, judging that the filter element package is not dismantled;
6) if yes, calculating the current rotating speed ni;
7) judging whether ni is larger than the upper limit na, if so, judging that the flue resistance is large and the maintenance is needed;
8) if not, continuously judging whether ni is smaller than nb, and if so, determining that the filter element is reversely mounted;
9) if not, the filter element is considered to be installed correctly;
10) written to storage as a reference.
2. The central purification system filter element installation detection prompting method according to claim 1, characterized in that: the flue fan (5) is provided with a motor current and power detection module, and the starting time t1 is recorded through the motor current and power detection module in the step 3).
3. The central purification system filter element installation detection prompting method according to claim 1, characterized in that: and in the step 6), the current rotating speed ni is calculated by detecting the counter electromotive force or a rotating speed sensor.
4. The central purification system filter element installation detection prompting method according to claim 1, characterized in that: the method also comprises a detection prompting method for maintaining and replacing the filter element, wherein the flue fan (5) is provided with an impeller, and the detection prompting method for maintaining and replacing the filter element comprises the following steps:
①, initial start after filter element replacement;
②, running a self-checking program for whether the installation of the filter element is correct;
③, after installation and debugging, firstly opening any check valve to a certain angle, closing other check valves, opening the flue fan to a default gear Ti for operation, and recording the starting time t 2;
④, reading the pressure value at the front end of the purification device through the pressure sensor;
⑤, judging whether the current pressure is less than the reference pressure, if not, judging that the filter element package is not removed
⑥, if yes, calculating the current rotation speed ni;
⑦, judging whether ni is larger than the upper limit na, if so, judging that the flue resistance is large and the maintenance is needed;
⑧, if not, continuously judging whether ni is smaller than nb, if so, considering the filter element to be reversely mounted;
⑨, if not, the filter element is considered to be installed correctly;
⑩, comparing the starting time t1 recorded in the step 3) with the starting time t2 recorded in the step ③ to determine whether the impeller needs to be maintained;
5. The method for prompting filter element installation detection of a central purification system according to any one of claims 1 to 4, wherein: the check valve (4) comprises a valve plate (41) and a valve plate control motor (42) for controlling the valve plate to open and close.
6. The central purification system filter element installation detection prompting method according to claim 5, characterized in that: and a detection module (8) for detecting the opening angle of the valve plate (41) is arranged on the smoke pipe (2).
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| CN201911066567.8A CN110925822B (en) | 2019-11-04 | 2019-11-04 | Filter element installation detection prompting method of central purification system |
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| CN201911066567.8A CN110925822B (en) | 2019-11-04 | 2019-11-04 | Filter element installation detection prompting method of central purification system |
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| CN110925822A true CN110925822A (en) | 2020-03-27 |
| CN110925822B CN110925822B (en) | 2021-08-20 |
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| CN104568698A (en) * | 2014-12-26 | 2015-04-29 | 广东美的制冷设备有限公司 | Device and method for detecting state of filter screen in air conditioner |
| CN106958908A (en) * | 2017-02-24 | 2017-07-18 | 珀隆有限公司 | VMC and its air quantity control method and device |
| CN108954720A (en) * | 2018-08-13 | 2018-12-07 | 珠海格力电器股份有限公司 | Filter screen failure judgment method, filter screen failure judgment system and unit equipment |
| CN109966808A (en) * | 2019-03-27 | 2019-07-05 | 北京小米移动软件有限公司 | Filter check method and device, readable storage medium storing program for executing, electronic equipment |
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2019
- 2019-11-04 CN CN201911066567.8A patent/CN110925822B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060039425A (en) * | 2006-04-17 | 2006-05-08 | 공해만 | Computer case cooling pan controll and dust filter |
| CN104568698A (en) * | 2014-12-26 | 2015-04-29 | 广东美的制冷设备有限公司 | Device and method for detecting state of filter screen in air conditioner |
| CN106958908A (en) * | 2017-02-24 | 2017-07-18 | 珀隆有限公司 | VMC and its air quantity control method and device |
| CN108954720A (en) * | 2018-08-13 | 2018-12-07 | 珠海格力电器股份有限公司 | Filter screen failure judgment method, filter screen failure judgment system and unit equipment |
| CN109966808A (en) * | 2019-03-27 | 2019-07-05 | 北京小米移动软件有限公司 | Filter check method and device, readable storage medium storing program for executing, electronic equipment |
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