CN114061064A - New fan and method for detecting filth blockage of filter screen of new fan - Google Patents
New fan and method for detecting filth blockage of filter screen of new fan Download PDFInfo
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- CN114061064A CN114061064A CN202010771926.6A CN202010771926A CN114061064A CN 114061064 A CN114061064 A CN 114061064A CN 202010771926 A CN202010771926 A CN 202010771926A CN 114061064 A CN114061064 A CN 114061064A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/30—Velocity
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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
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Abstract
The invention relates to the technical field of air purification equipment, and discloses a fresh air fan and a method for detecting filth blockage of a filter screen of the fresh air fan, wherein the fresh air fan comprises a machine body, the filter screen and a controller, the filter screen and the controller are arranged on the machine body, and the controller is configured as follows: acquiring the actually measured fresh air volume in a preset operation time period, and sending an alarm signal to remind a user of processing the filter screen when the actually measured fresh air volume is smaller than the first preset fresh air volume; sequentially accumulating the actually measured fresh air volume of each preset operation time period to obtain the accumulated fresh air volume; and when the accumulated fresh air volume reaches a second preset fresh air volume, sending an alarm signal to remind a user to process the filter screen, and after a signal of finishing the filter screen processing is obtained, recalculating the accumulated fresh air volume. The invention judges whether the user needs to clean the filter screen from multiple angles by directly detecting the fresh air volume, has simple detection process and is not influenced by other factors, greatly improves the detection precision and prolongs the service life of the product.
Description
Technical Field
The invention relates to the technical field of air purification equipment, in particular to a new fan and a method for detecting filth blockage of a filter screen of the new fan.
Background
The fresh air machine is an effective air purification device, can circulate indoor air, on one hand, discharges dirty indoor air outdoors, and on the other hand, inputs outdoor fresh air into the room after measures such as sterilization, disinfection, filtration and the like, so that the air in the room is fresh and clean at every moment.
In current new trend fan, when judging whether the filter screen takes place dirty stifled condition, generally utilize sensing element such as predetermined thermistor to monitor, because this type of component sets up in new trend fan's inside mostly, receives the influence of factors such as inner space position, and the judgement process receives ambient temperature to disturb easily, and detection accuracy is not high, can not detect the dirty stifled condition of new trend fan filter screen well.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the new fan is used for judging whether a filter screen is dirty or not by detecting the fresh air volume so as to improve the detection precision.
In order to solve the above technical problem, the present invention provides a new fan, including a machine body, a filter screen and a controller, wherein the filter screen and the controller are disposed on the machine body, and the controller is configured to: acquiring an actually measured fresh air volume in a preset operation time period; judging whether the actually measured fresh air volume is smaller than a first preset fresh air volume or not, and if so, sending an alarm signal to remind a user to process the filter screen; sequentially accumulating the actually measured fresh air volume of each preset operation time period to obtain an accumulated fresh air volume; when the accumulated fresh air volume reaches a second preset fresh air volume, sending an alarm signal to remind a user to process the filter screen; and after the signal that the filter screen is processed is obtained, recalculating the accumulated fresh air volume.
Preferably, the controller is further configured to: acquiring a plurality of operating rotating speeds at any time point in the preset operating time period; inquiring a preset first alarm fresh air volume data table according to the operation rotating speed with the minimum rotating speed, and acquiring the corresponding alarm fresh air volume as the first preset fresh air volume; and the first alarm fresh air volume data table records the relation between the operation rotating speed and the alarm fresh air volume.
Preferably, the controller is further configured to: acquiring the operation rotating speed in each preset operation time period; inquiring a preset second alarm fresh air volume data table according to each operation rotating speed, calculating a time proportion value between the time of each operation rotating speed and the total operation time, acquiring the proportion value of the total alarm fresh air volume corresponding to the operation rotating speed according to the time proportion value, and accumulating the proportion value of the total alarm fresh air volume to acquire the second preset fresh air volume; and the second alarm fresh air volume data table records the relationship between the operation rotating speed and the alarm fresh air total volume.
Preferably, the controller is further configured to: when an alarm signal is sent to remind a user of processing the filter screen, a signal for lightening a preset icon on the display panel is triggered; and after the signal processed by the filter screen is acquired, triggering to extinguish the signal of the preset icon on the display panel.
Preferably, the controller is further configured to: and when an alarm signal is sent to remind a user to process the filter screen, triggering a signal for executing the automatic cleaning action of the filter screen.
Based on the same purpose, the invention also provides a method for detecting filth blockage of the filter screen of the fresh air fan, which comprises the following steps: acquiring an actually measured fresh air volume in a preset operation time period; judging whether the actually measured fresh air volume is smaller than a first preset fresh air volume or not, and if so, sending an alarm signal to remind a user to process the filter screen; sequentially accumulating the actually measured fresh air volume of each preset operation time period to obtain an accumulated fresh air volume; when the accumulated fresh air volume reaches a second preset fresh air volume, sending an alarm signal to remind a user of processing the filter screen; and after the signal that the filter screen is processed is obtained, recalculating the accumulated fresh air volume.
Preferably, the method further comprises the following steps: acquiring a plurality of operating rotating speeds at any time point in the preset operating time period; inquiring a preset first alarm fresh air volume data table according to the operation rotating speed with the minimum rotating speed, and acquiring the corresponding alarm fresh air volume as the first preset fresh air volume; and the first alarm fresh air volume data table records the relation between the operation rotating speed and the alarm fresh air volume.
Preferably, the method further comprises the following steps: acquiring the operation rotating speed in each preset operation time period; inquiring a preset second alarm fresh air volume data table according to each operation rotating speed, calculating a time proportion value between the time of each operation rotating speed and the total operation time, acquiring the proportion value of the total alarm fresh air volume corresponding to the operation rotating speed according to the time proportion value, and accumulating the proportion value of the total alarm fresh air volume to acquire the second preset fresh air volume; and the second alarm fresh air volume data table records the relationship between the operation rotating speed and the alarm fresh air total volume.
Preferably, the method further comprises the following steps: when an alarm signal is sent to remind a user of processing the filter screen, a signal for lightening a preset icon on the display panel is triggered; and after the signal processed by the filter screen is acquired, triggering to extinguish the signal of the preset icon on the display panel.
Preferably, the method further comprises the following steps: and when an alarm signal is sent to remind a user to process the filter screen, triggering a signal for executing the automatic cleaning action of the filter screen.
Compared with the prior art, the fresh air fan provided by the invention has the beneficial effects that:
the invention is characterized in that a controller is configured to detect and obtain the measured fresh air volume in a preset operation time period, the measured fresh air volume is compared with the first preset fresh air volume, when the measured fresh air volume is smaller than the first preset fresh air volume, namely dirty blockage of the filter screen affects the fresh air volume transmission, an alarm signal is sent to remind a user to process the filter screen in time, each measured fresh air volume is accumulated, when the accumulated fresh air volume reaches the second preset fresh air volume, the dirty blockage of the filter screen to a certain degree is indicated, an alarm signal is sent to remind the user to process the filter screen in time, excessive dirty blockage is avoided from being accumulated, the filter screen is difficult to process, the invention directly judges whether the user needs to clean the filter screen from multiple angles by detecting the size of the fresh air volume, the detection process is simple and is not influenced by other factors, the detection precision is greatly improved, the detection effect of the filter screen of the fresh air fan is further improved, and the service life of the product is prolonged.
Drawings
Fig. 1 is a flowchart of a method for detecting dirty filter screen of a fresh air machine according to a preferred embodiment of the present invention.
Fig. 2 is a flowchart of acquiring a first preset fresh air volume in the method for detecting dirty clogging of the filter screen of the fresh air blower according to the preferred embodiment of the present invention.
Fig. 3 is a flowchart of acquiring a second preset fresh air volume in the method for detecting dirty clogging of the filter screen of the fresh air blower according to the preferred embodiment of the present invention.
Fig. 4 is a schematic diagram of module connection of alarm information of dirty and blocked filter screen of the fresh air machine according to the preferred embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "connected," "fixed," and the like are used in a broad sense, and for example, the terms "connected," "connected," and "fixed" may be fixed, detachable, or integrated; the connection can be mechanical connection or welding connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 4, a new fan according to a preferred embodiment of the present invention includes a main body, a filter screen, and a controller, where the filter screen and the controller are disposed on the main body, and the controller is configured to: acquiring an actually measured fresh air volume in a preset operation time period; judging whether the actually measured fresh air volume is smaller than a first preset fresh air volume or not, and if so, sending an alarm signal to remind a user to process the filter screen; sequentially accumulating the actually measured fresh air volume of each preset operation time period to obtain an accumulated fresh air volume; when the accumulated fresh air volume reaches a second preset fresh air volume, sending an alarm signal to remind a user to process the filter screen; and after the signal that the filter screen is processed is obtained, recalculating the accumulated fresh air volume.
The fresh air machine based on the technical characteristics comprises a controller, wherein the controller is configured to detect and obtain an actual measured fresh air volume in a preset operation time period, the actual measured fresh air volume is compared with a first preset fresh air volume, when the actual measured fresh air volume is smaller than the first preset fresh air volume, namely filth blockage generated by the filter screen affects the conveying of the fresh air volume, an alarm signal is sent to remind a user to timely process the filter screen, each actual measured fresh air volume is accumulated, when the accumulated fresh air volume reaches a second preset fresh air volume, a certain degree of filth blockage generated by the filter screen is indicated, an alarm signal is also sent to remind the user to timely process the filter screen, excessive filth blockage accumulated on the filter screen is avoided and the filter screen is difficult to process, and the controller directly judges whether the user needs to clean the filter screen from multiple angles by detecting the size of the fresh air volume, the detection process is simple and cannot be influenced by other factors, the detection precision is greatly improved, the detection effect of the filter screen of the fresh air machine is further improved, and the service life of a product is prolonged.
The preset operation time period comprises operation time t and a coefficient N, namely the preset operation time period is N x t, the size of the preset operation time period can be adjusted by setting the coefficient N, the corresponding actually-measured fresh air volume exists in any time period, the coefficient N is an integral multiple of the operation time t by considering an operation curve of the fresh air volume, the obtained preset operation time period is an integral time period, for example, the operation time is 0.5h, the preset operation time period can be 0.5h, 1h, 1.5h and the like, the occurrence of non-integral time of 34 minutes or 66 minutes is avoided, and the operation pressure of the controller is reduced.
In addition, the fresh air volume adopted in the invention is calculated as follows: the wind speed of the fresh air passing through the filter screen is V, the section area is F, the fresh air quantity in unit time is calculated to be F x V, and therefore the actually measured fresh air quantity is obtained.
In a first detection scenario, the controller is further configured to: acquiring a plurality of operating rotating speeds in the preset operating time period; and when the operation rotating speeds at any time point in the preset operation time period are equal, correspondingly inquiring a preset first alarm fresh air volume data table according to the operation rotating speeds to obtain the first preset fresh air volume.
Because the corresponding alarm fresh air volume exists under different operation rotating speeds of the fresh air fan, the numerical value is obtained by test measurement, and the first alarm fresh air volume data table records the relation between the operation rotating speed and the alarm fresh air volume. A first alarm fresh air volume data table as shown in the following table:
| running speed FX (rpm) | Alarm fresh air quantity H (m)3/h) |
| FX≥2100 | 48 |
| 1900≤FX＜2100 | 43 |
| 1700≤FX＜1900 | 38 |
| 1500≤FX＜1700 | 33 |
| 1300≤FX＜1500 | 28 |
In the detection scene, at any time point in the preset operation time period, the obtained operation rotating speeds are the same, namely, the controller only needs to inquire the corresponding alarm fresh air volume as a first preset fresh air volume, then the actually-measured fresh air volume is compared with the first preset fresh air volume, and when the actually-measured fresh air volume is smaller than the first preset fresh air volume, an alarm signal needs to be sent to remind a user of timely processing the filter screen. And (4) carrying out classification treatment on the alarm fresh air volume through the operation rotating speed so as to be suitable for the fresh air fan with various operation conditions.
In a second detection scenario, the controller is further configured to: acquiring the running rotating speed in the preset running time period; when a plurality of operation rotating speeds in the preset operation time period are unequal, inquiring a preset first alarm fresh air volume data table according to the operation rotating speed with the minimum rotating speed, and acquiring the corresponding alarm fresh air volume as the first preset fresh air volume.
In this detection scenario, in the preset operation time period, the operation rotation speed changes, and the first alarm fresh air volume data table can obtain whether different operation rotation speeds correspond to different alarm fresh air volumes, so that the alarm fresh air volume corresponding to the operation rotation speed with the smallest value is used as the first preset fresh air volume, and the situation that false alarms occur due to the reduction of the actually measured fresh air volume in the reduction process of the operation rotation speed is avoided. If the dirty blockage of the filter screen has influenced the delivery of fresh air volume, the detection can be accurately performed under the condition of stable operation rotating speed (a first detection scene).
With reference to fig. 2, it can be understood that, in the first detection scenario and the second detection scenario, after a plurality of operation rotation speeds at any time point in the preset operation time period are obtained, no matter whether the operation rotation speeds are equal or unequal, the query is performed according to the operation rotation speed with the smallest rotation speed, and the obtained first preset fresh air volume is not changed.
In a third detection scenario, the controller is further configured to: acquiring the operation rotating speed in each preset operation time period; and when the operation rotating speeds in the preset operation time periods are equal, correspondingly inquiring a preset second alarm fresh air volume data table according to the operation rotating speeds to obtain a second preset fresh air volume.
Because the corresponding total amount of the alarm fresh air exists at different operation rotating speeds of the fresh air fans, namely the fresh air volume which is conveyed to a certain total amount by the fresh air fans in an accumulated mode, the filter screen is indicated to be dirty to a certain degree, the value is obtained by test measurement, and the second alarm fresh air volume data table records the relationship between the operation rotating speed and the total amount of the alarm fresh air. A second alarm fresh air volume data table as shown in the following table:
| running speed FX (rpm) | Alarm fresh air total H (m)3/h) |
| FX≥2100 | 48000 |
| 1900≤FX＜2100 | 43000 |
| 1700≤FX＜1900 | 38000 |
| 1500≤FX＜1700 | 33000 |
| 1300≤FX＜1500 | 28000 |
In the detection scene, the operation rotating speeds in the preset operation time periods are equal, namely in the operation process, the new fan always operates at the same operation rotating speed, the controller only needs to inquire the corresponding total amount of the alarm fresh air as a second preset fresh air volume, and when the accumulated fresh air volume reaches the second preset fresh air volume, the filter screen is indicated to be dirty and blocked to a certain extent, an alarm signal needs to be sent to remind a user of timely processing the filter screen. And grading the accumulated fresh air volume through the operation rotating speed so as to be suitable for the fresh air fan with various operation conditions.
In a fourth detection scenario, when two or more unequal operating speeds exist in each preset operating time period, that is, in the operating process, the new air blower operates at operating speeds in different stages, a preset second alarm fresh air volume data table is inquired correspondingly according to each operating speed, a time proportion value between the time used by each operating speed and the total operating time is calculated, the proportion value of the alarm fresh air volume corresponding to the operating speed is obtained according to the time proportion value, and the second preset fresh air volume is obtained by accumulating the proportion value of the total alarm fresh air volume.
In the detection scene, each preset operation time period has two or more unequal operation rotating speeds, an alarm fresh air total amount proportion value is determined according to the time proportion value of the corresponding operation rotating speed, and then the alarm fresh air total amount proportion values are added to obtain the second preset fresh air amount. Such as the examples shown in the following table:
the new fan operates for 90 hours from the beginning and is divided into two stages, the operation speed is 2000 and the actually measured total fresh air volume is 10000 when the new fan operates for 30 hours in the first stage, so the time proportion value in the first stage is 30/90, the proportion value of the total alarm fresh air volume is 30/90 h 43000 h approximately 14300, the operation speed is 1400 when the new fan operates for 60 hours in the second stage, the actually measured total fresh air volume is 30000, so the time proportion value in the second stage is 60/90, the proportion value of the total alarm fresh air volume is 60/90 h 33000 h 22000 h 36300, and the second preset fresh air volume is 14300+22000 h 36300. And the sum of the actually measured fresh air volume in the first stage and the second stage is 10000+30000 which is 40000 which is larger than 36300, which indicates that an alarm signal needs to be sent out to remind a user to process the filter screen in time.
As can be seen from the above example summary, in the detection scenario, the second preset fresh air volume is:
wherein, T isGeneral assemblyFor total running time, T1、T2、TnFor different operating speedsTime of use, H1、H2、HnThe total amount of the alarm fresh air corresponding to different operation rotating speeds.
With reference to fig. 3, it can be understood that, in the third detection scenario and the fourth detection scenario, after a plurality of operation rotation speeds in each preset operation time period are obtained, no matter whether the operation rotation speeds are equal or unequal, the second preset fresh air volume is obtained by calculating according to the proportional value of the total amount of the alarm fresh air, that is, in the third detection scenario, the proportional value of the total amount of the alarm fresh air is calculated by adopting a 100% proportion, in the fourth detection scenario, the proportional value of the total amount of the alarm fresh air is calculated by adopting an actual proportion, and the obtained second preset fresh air volume is unchanged.
As shown in fig. 4, in the present embodiment, the controller is further configured to: when an alarm signal is sent to remind a user to process the filter screen, a signal for lightening a preset icon on the display panel is triggered. Namely, the LED driving unit is controlled to drive the LED lamp on the display panel to flicker continuously so as to remind a user of processing in time, and the method is more intuitive.
In this embodiment, after the signal that the filter screen processing is completed is obtained, turning off the signal of the preset icon on the display panel is triggered. And after the filter screen is cleaned by a user, when the filter screen is installed and returned or a reset button is pressed, the controller receives a signal of finishing the processing, controls the LED driving unit to extinguish the LED lamp on the display panel, and resets the calculating unit of the controller, so that the accumulated fresh air volume is recalculated.
In this embodiment, the controller is further configured to: and when an alarm signal is sent to remind a user to process the filter screen, triggering a signal for executing the automatic cleaning action of the filter screen. For example, the water tank configured by the cleaning module is used for spraying cleaning water to the filter screen, so that the automatic cleaning function of the filter screen is realized.
Corresponding to the fresh air fan, the embodiment of the invention also provides a method for detecting filth blockage of the filter screen of the fresh air fan, which comprises the following steps:
acquiring an actually measured fresh air volume in a preset operation time period;
judging whether the actually measured fresh air volume is smaller than a first preset fresh air volume or not, and if so, sending an alarm signal to remind a user to process the filter screen;
sequentially accumulating the actually measured fresh air volume of each preset operation time period to obtain an accumulated fresh air volume;
when the accumulated fresh air volume reaches a second preset fresh air volume, sending an alarm signal to remind a user of processing the filter screen;
and after the signal that the filter screen is processed is obtained, recalculating the accumulated fresh air volume.
Further, the method also comprises the following steps: acquiring a plurality of operating rotating speeds at any time point in the preset operating time period; inquiring a preset first alarm fresh air volume data table according to the operation rotating speed with the minimum rotating speed, and acquiring the corresponding alarm fresh air volume as the first preset fresh air volume;
and the first alarm fresh air volume data table records the relation between the operation rotating speed and the alarm fresh air volume.
Further, the method also comprises the following steps: acquiring the operation rotating speed in each preset operation time period; inquiring a preset second alarm fresh air volume data table according to each operation rotating speed, calculating a time proportion value between the time of each operation rotating speed and the total operation time, acquiring the proportion value of the total alarm fresh air volume corresponding to the operation rotating speed according to the time proportion value, and accumulating the proportion value of the total alarm fresh air volume to acquire the second preset fresh air volume;
and the second alarm fresh air volume data table records the relationship between the operation rotating speed and the alarm fresh air total volume.
Further, the method also comprises the following steps: when an alarm signal is sent to remind a user of processing the filter screen, a signal for lightening a preset icon on the display panel is triggered; and after the signal processed by the filter screen is acquired, triggering to extinguish the signal of the preset icon on the display panel.
Further, the method also comprises the following steps: and when an alarm signal is sent to remind a user to process the filter screen, triggering a signal for executing the automatic cleaning action of the filter screen.
In summary, the embodiment of the invention provides a new fan and a method for detecting filth blockage of a filter screen thereof, which judge the filth blockage condition of the filter screen by detecting the fresh air volume of the new fan, judge whether a user needs to clean the filter screen at multiple angles, have simple detection process and are not influenced by other factors, and greatly improve the detection precision. And under the operating speed circumstances of difference, can carry out hierarchical processing, be applicable to the new fan of multiple operational aspect, the commonality is strong, has improved user's use impression.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A new fan, comprising:
a body;
the filter screen is arranged on the machine body;
a controller configured to:
acquiring an actually measured fresh air volume in a preset operation time period;
judging whether the actually measured fresh air volume is smaller than a first preset fresh air volume or not, and if so, sending an alarm signal to remind a user to process the filter screen;
sequentially accumulating the actually measured fresh air volume of each preset operation time period to obtain an accumulated fresh air volume;
when the accumulated fresh air volume reaches a second preset fresh air volume, sending an alarm signal to remind a user to process the filter screen;
and after the signal that the filter screen is processed is obtained, recalculating the accumulated fresh air volume.
2. The new fan of claim 1, wherein the controller is further configured to:
acquiring a plurality of operating rotating speeds at any time point in the preset operating time period;
inquiring a preset first alarm fresh air volume data table according to the operation rotating speed with the minimum rotating speed, and acquiring the corresponding alarm fresh air volume as the first preset fresh air volume;
and the first alarm fresh air volume data table records the relation between the operation rotating speed and the alarm fresh air volume.
3. The new fan of claim 1, wherein the controller is further configured to:
acquiring the operation rotating speed in each preset operation time period;
inquiring a preset second alarm fresh air volume data table according to each operation rotating speed, calculating a time proportion value between the time of each operation rotating speed and the total operation time, acquiring the proportion value of the total alarm fresh air volume corresponding to the operation rotating speed according to the time proportion value, and accumulating the proportion value of the total alarm fresh air volume to acquire the second preset fresh air volume;
and the second alarm fresh air volume data table records the relationship between the operation rotating speed and the alarm fresh air total volume.
4. The new fan of claim 1, wherein the controller is further configured to:
when an alarm signal is sent to remind a user of processing the filter screen, a signal for lightening a preset icon on the display panel is triggered;
and after the signal processed by the filter screen is acquired, triggering to extinguish the signal of the preset icon on the display panel.
5. The new fan of claim 1, wherein the controller is further configured to:
and when an alarm signal is sent to remind a user to process the filter screen, triggering a signal for executing the automatic cleaning action of the filter screen.
6. A method for detecting filth blockage of a filter screen of a fresh air fan is characterized by comprising the following steps:
acquiring an actually measured fresh air volume in a preset operation time period;
judging whether the actually measured fresh air volume is smaller than a first preset fresh air volume or not, and if so, sending an alarm signal to remind a user to process the filter screen;
sequentially accumulating the actually measured fresh air volume of each preset operation time period to obtain an accumulated fresh air volume;
when the accumulated fresh air volume reaches a second preset fresh air volume, sending an alarm signal to remind a user of processing the filter screen;
and after the signal that the filter screen is processed is obtained, recalculating the accumulated fresh air volume.
7. The method for detecting filth blockage of the filter screen of the fresh air fan as claimed in claim 6, further comprising the following steps:
acquiring a plurality of operating rotating speeds at any time point in the preset operating time period;
inquiring a preset first alarm fresh air volume data table according to the operation rotating speed with the minimum rotating speed, and acquiring the corresponding alarm fresh air volume as the first preset fresh air volume;
and the first alarm fresh air volume data table records the relation between the operation rotating speed and the alarm fresh air volume.
8. The method for detecting filth blockage of the filter screen of the fresh air fan as claimed in claim 6, further comprising the following steps:
acquiring the operation rotating speed in each preset operation time period;
inquiring a preset second alarm fresh air volume data table according to each operation rotating speed, calculating a time proportion value between the time of each operation rotating speed and the total operation time, acquiring the proportion value of the total alarm fresh air volume corresponding to the operation rotating speed according to the time proportion value, and accumulating the proportion value of the total alarm fresh air volume to acquire the second preset fresh air volume;
and the second alarm fresh air volume data table records the relationship between the operation rotating speed and the alarm fresh air total volume.
9. The method for detecting filth blockage of the filter screen of the fresh air fan as claimed in claim 6, further comprising the following steps:
when an alarm signal is sent to remind a user of processing the filter screen, a signal for lightening a preset icon on the display panel is triggered;
and after the signal processed by the filter screen is acquired, triggering to extinguish the signal of the preset icon on the display panel.
10. The method for detecting filth blockage of the filter screen of the fresh air fan as claimed in claim 6, further comprising the following steps:
and when an alarm signal is sent to remind a user to process the filter screen, triggering a signal for executing the automatic cleaning action of the filter screen.
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