CN114110926A - Method for monitoring the life of an air purifier filter element - Google Patents

Abstract

The invention discloses a method for monitoring the life of a filter element, which comprises the following steps: a light source (9) is arranged in the air inlet cabin (3) between the air purifier filter element (2) and the air wheel component (4); and the service life of the filter element of the air purifier is monitored by the brightness emitted by the light source (9) through the filter element (2). In the invention, the user can directly monitor the service life of the filter element in real time through visual impression, and the method is visual, simple and convenient and is suitable for various user groups. Meanwhile, the invention can also provide illumination brightness for a use place (such as a carriage of a rail vehicle).

Description

Method for monitoring the life of an air purifier filter element

Technical Field

The invention relates to the technical field of air purification, in particular to a method for monitoring the service life of a filter element of an air purifier.

Technical Field

To improve air quality, most residential homes use air purification devices. The air purification equipment can effectively remove indoor gas pollutants and particulate matters, and guarantees human health.

There are many air purification devices on the market, and for consumers, the air purification devices are important evaluation parameters for selecting the air purification devices in addition to the clean air amount, power, noise and service life. The purification life of an air purification apparatus generally refers to the total operating time when removing indoor contaminants causes the clean air amount to decrease to half of the initial value. Air purification equipment can influence its performance because the deposition, and as air purification equipment's filter core ash layer or particulate matter are more and more, purifying effect also can be more and more poor, also means that the filter core needs to be changed.

The average consumer is not certain when the cartridge needs to be replaced. The prior art mainly solves the problem of the service life display of the filter element by the following means and methods:

(1) timing device

The service life of the filter element is shortened gradually along with the extension of the starting operation time of the air purification equipment by presetting time in a control component until the time end shows that the service life of the filter element is terminated and needs to be replaced. However, the service lives of the filter elements in different air quality environments are not consistent, the service life of the filter elements cannot be accurately reflected by a single time counting system, the filter elements are easy to replace too early or not timely, and the maintenance cost of consumers is increased when the filter elements are replaced too early; the replacement is too late, which easily causes secondary pollution.

(2) Monitoring the pressure differential across the front and rear ends of the filter element

Along with the extension of air purification equipment live time, the pressure differential of two sections of filter cores can change, judges the life-span of filter core according to the size of change proportion. The method is derived from a service life judgment method of a filter element in industry, but for a user group of civil air purification equipment, the monitoring of the pressure difference of the filter element is difficult to implement.

(3) Setting air quality sensor and combining intelligent program control

This monitoring approach is not intuitive for consumers who are not good at operating smart devices.

For this reason, there is still a need for a new method for monitoring the life of an air purifier filter element to visually monitor the life of the filter element of an air purification apparatus.

Disclosure of Invention

An object of exemplary embodiments of the present invention is to address the above and other deficiencies in the art and to provide a method for monitoring the life of an air purifier filter element that addresses the problem of visually monitoring and displaying the life of an air purification device filter element.

In order to solve the above technical problems, the present invention provides a method for monitoring a lifetime of a filter element of an air cleaner, the method comprising:

alight source 9 is arranged in theair inlet cabin 3 between the airpurifier filter element 2 and theair wheel component 4; and

the service life of the filter element of the air purifier is monitored by the brightness emitted by thelight source 9 through thefilter element 2.

In an embodiment of the invention, thelight source 9 is arranged on a side wall of theair intake compartment 3, a side of theair intake compartment 3 facing thefilter element 2, or the same side of theair intake compartment 3 as thefilter element 2.

In an embodiment of the invention, the method comprises arranging alight barrier 12 above thelight source 9 in a direction perpendicular to the light of thelight source 9.

In an embodiment of the invention, the method comprises providing arotor inlet flap 13 at the periphery of thewind turbine assembly 4.

In an embodiment of the invention, the method comprises arranging alight source optimizer 16 above thelight source 9.

In an embodiment of the present invention, thelight source optimizer 16 comprises a lens or a prism.

In an embodiment of the invention, the method comprises providing a light-reflectingsurface 14 in theintake compartment 3 on the side facing thefilter element 2.

In an embodiment of the invention, the method includes indicating that the filter element is out of life when the light emitted by thelight source 9 through thefilter element 2 is insufficient to provide the desired illumination level for the intended location of use of the air purifier.

In an embodiment of the invention, the method includes monitoring air purifier filter element life by measuring light emitted by thelight source 9 through thefilter element 2 by anillumination sensor 17 located outside the air purifier.

In an embodiment of the invention, the air purifier is arranged on the top or the side wall of a carriage of the rail vehicle.

By the method for monitoring the service life of the filter element of the air purifier, a user can directly monitor the service life of the filter element in real time through visual impression, and the method is visual, simple and convenient and is suitable for various user groups. When more dust is adsorbed on the filter element, the light emitted by the light source through the filter element will be weakened. At this time, the light emitted from the light source is not enough to reach the illumination brightness required by the use place, so that the user can be prompted to replace the filter element.

These and other features and advantages will become apparent upon reading the following detailed description and upon reference to the accompanying drawings. It is to be understood that both the foregoing general description and the following detailed description are explanatory only and are not restrictive of aspects as claimed.

Drawings

The invention may be better understood by describing exemplary embodiments thereof in conjunction with the following drawings, in which:

FIG. 1 shows a schematic view of an air purifier in some embodiments of the present invention.

Fig. 2 shows an exploded view of an air purifier in accordance with some embodiments of the present invention.

Fig. 3 shows a side view of an air purifier in a first embodiment of the present invention.

Fig. 4 shows a side view of an air purifier with a light source optimizer in a first embodiment of the present invention.

Fig. 5 shows a side view of an air cleaner in a second embodiment of the present invention.

Fig. 6 shows a side view of an air purifier with a light source optimizer in a second embodiment of the present invention.

Fig. 7 shows a top view of an air cleaner in a third embodiment of the present invention.

Fig. 8 shows a top view of an air cleaner in a fourth embodiment of the present invention.

Fig. 9 shows a top view of an air purifier with a light source optimizer in a fourth embodiment of the present invention.

Fig. 10 shows a top view of an air cleaner in a fifth embodiment of the present invention.

Fig. 11 shows a graph of illuminance versus time for the air cleaning apparatus according to example 1 of the present invention.

Fig. 12 shows a graph of illuminance versus time for the air cleaning apparatus according to example 2 of the present invention.

Fig. 13 shows the illuminance versus time curve of the air purification apparatus according to example 3 of the present invention.

Fig. 14 shows the illuminance versus time curve of the air purification apparatus according to example 4 of the present invention.

Description of reference numerals:

1: cover plate

2: filter element

3: air intake cabin

4: wind wheel assembly

5: air outlet

6: sensor with a sensor element

7: control panel

8: emergency stop switch

9: light source

10: shell body

11: wind wheel

12: light barrier/light source baffle

13: wind wheel air inlet baffle

14: reflecting surface

15: (casing/air intake compartment) side wall

16: light source optimizer

17: illuminance sensor

18: air inlet surface/luminous surface

Detailed Description

The present application is described in detail below with reference to the attached drawing figures, and features of the present application will become further apparent from the detailed description below. Unless otherwise defined, technical or scientific terms used in the claims and the specification should have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs.

In the present application, all embodiments and preferred embodiments mentioned herein may be combined with each other to form new solutions, if not specifically stated. In the present application, all the technical features mentioned herein as well as preferred features may be combined with each other to form new technical solutions, if not specifically stated.

In the present application, the terms "include" and "comprise" as used herein mean open or closed unless otherwise specified. For example, the terms "comprising" and "comprises" may mean that other components not listed may also be included or included, or that only listed components may be included or included.

In the description herein, the term "or" is inclusive, unless otherwise specified. For example, the phrase "a or B" means "a, B, or both a and B. More specifically, either of the following conditions satisfies the condition "a or B": a is true (or present) and B is false (or not present); a is false (or not present) and B is true (or present); or both a and B are true (or present).

The present invention will be further described with reference to specific embodiments, but the present invention is not limited to the specific embodiments described below.

In the invention, a light source (such as an LED, an energy-saving lamp and the like) is arranged in an air inlet cabin between a filter element and a wind wheel of the air purification equipment. When more dust is adsorbed on the filter element, the light emitted by the light source through the filter element will be weakened. At this time, the light emitted from the light source is not enough to reach the illumination brightness required by the use place, thereby prompting the user to replace the filter element.

The method for monitoring the life of a filter cartridge according to the invention can be provided in an air cleaning apparatus, as shown in fig. 1 and 2. The air purification equipment comprises ashell 10, acover plate 1, afilter element 2 positioned below the cover plate, anair wheel component 4, anair inlet cabin 3 positioned between theair wheel component 4 and thefilter element 2, andair outlets 5 positioned at two sides of theshell 10. In an alternative embodiment, the air cleaning device further comprises acontrol panel 7, asensor 6 and anemergency stop switch 8. In the present invention, the light source may be placed inside theintake compartment 3. In some embodiments, the light source may be disposed in theintake compartment 3 on a side wall of thehousing 10. In some embodiments, the light source may be arranged in theintake compartment 3 on a side facing thefilter element 2. In some embodiments, the light source may be disposed in theintake compartment 3 on the same side as thefilter element 2. In the invention, an illumination sensor can be arranged in the air inlet cabin of the air purification equipment, and the illumination sensor is electrically connected with the light source and can control the brightness of the light source according to an illumination value obtained by the illumination sensor.

In the first embodiment of the invention, as shown in fig. 3, thelight source 9 is placed on theside wall 15 of theintake compartment 3. A light barrier 12 (or referred to as a light source baffle) is disposed on a side of thelight source 9, which is close to thefilter element 2, to prevent light emitted from thelight source 9 from leaking out from the side and prevent light emitted from thelight source 9 from directly passing through thefilter element 2 and being emitted. In some embodiments, thelight barrier 12 may be disposed in a direction perpendicular to the light source light to prevent light emitted by thelight source 9 from directly exiting through thefilter element 2. In an alternative embodiment, the height and shape (e.g. arc shape) of thelight barrier 12 may be determined in dependence of the distance from the light source to ensure that light emitted by thelight source 9 is completely prevented from being emitted directly through thefilter element 2. In some embodiments, the side of thelight barrier 12 close to thelight source 9 may have a light-reflecting surface for reflecting light to illuminate in theintake compartment 3. In some embodiments, a light-reflectingsurface 14 can be provided in theintake compartment 3 on the side facing thefilter element 2, for reflecting light uniformly onto thefilter element 2. In some embodiments, a light barrier 13 (e.g., an annular light barrier, also called a "wind wheel air inlet light barrier") may be disposed on the circumference of thewind wheel 11 to prevent the light source from overflowing from theair outlet 5 via the wind wheel air inlet, causing light interference, and affecting the determination of the brightness of the light source at the air inlet surface (cover plate 1) by the user. In a preferred embodiment, FIG. 3 is adapted for a large capacity intake compartment.

As shown in fig. 4, in some embodiments, thelight source 9 may be covered with alight source optimizer 16, such as a lens or a prism; the refraction and reflection of the light source ensure that the light emitted through thefilter element 2 is more uniform.

In a second embodiment of the invention, as shown in fig. 5, thelight source 9 is arranged in theintake compartment 3 on the side facing thefilter insert 2. Thelight source 9 may be selected from a point-like light source, a ribbon-like light source (including a straight line or a circular arc), or a combination of both. In some embodiments, a light barrier 13 (e.g., an annular light barrier) may be disposed in the circumferential direction of thewind wheel 11, so as to prevent the light source from overflowing from theair outlet 5 via the wind wheel air inlet, causing light interference, and affecting the judgment of the brightness of the light source at the air inlet surface (cover plate 1) by the user.

As shown in fig. 6, in some embodiments, thelight source 9 may be covered with alight source optimizer 16, such as a lens or a prism; the refraction and reflection of the light source ensure that the light emitted through thefilter element 2 is more uniform.

In a third embodiment of the invention, as shown in fig. 7, thelight source 9 is arranged in theintake compartment 3 on the side facing thefilter element 2; thelight source 9 is also located on the back of the reflectingsurface 14, at a distance from the reflectingsurface 14 and in a direction towards thefilter element 2. The light penetrates through the reflectingsurface 14 and faces the direction of thefilter element 2, and the uniform illumination emitted by thefilter element 2 is ensured through the reflection effect of the reflectingsurface 14. In some embodiments, thelight source 9 may be covered with alight source optimizer 16, such as a lens or prism; the refraction and reflection of the light source ensure that the light emitted through thefilter element 2 is more uniform. In some embodiments, a light barrier 13 (e.g., an annular light barrier) may be disposed in the circumferential direction of thewind wheel 11, so as to prevent the light source from overflowing from theair outlet 5 via the wind wheel air inlet, causing light interference, and affecting the judgment of the brightness of the light source at the air inlet surface (cover plate 1) by the user.

In the fourth embodiment of the invention, as shown in fig. 8, thelight source 9 is arranged in theair intake compartment 3 on the circumference of thewind wheel 11 and perpendicular to thelight reflecting surface 14 of the air intake compartment. In some embodiments, the outer ring oflight sources 9 may be provided with alight barrier 12. In this case, thelight barrier 12 can simultaneously function as a light source barrier and a wind wheel intake barrier. On one hand, the light emitted by thelight source 9 can be prevented from leaking out from the side surface, and the light emitted by thelight source 9 is prevented from directly penetrating through thefilter element 2 to be emitted; on the other hand, the light source can be prevented from overflowing from theair outlet 5 through the air inlet of the wind wheel to cause light interference, and the judgment of the brightness of the light source on the air inlet surface (the cover plate 1) by a user is influenced.

As shown in fig. 9, in some embodiments, thelight source 9 may be covered with alight source optimizer 16, such as a lens or a prism; the refraction and reflection of the light source ensure that the light emitted through thefilter element 2 is more uniform.

In the fifth embodiment of the present invention, as shown in fig. 10, the light emitted from thelight source 9 is emitted from thefilter element 2 through the cover plate 1 (i.e., the air inlet surface/light emitting surface 8) to provide a certain illumination to the periphery of the device. In the invention, a user can visually observe the brightness of theluminous surface 8 to intuitively and simply monitor the service life of the filter element in real time. In some embodiments of the invention, the method or air purifier may include anilluminance sensor 17 located on an exterior or outer surface of the housing for monitoring the brightness of the surrounding environment. In some embodiments, one ormore illumination sensors 17 may be provided at the same face as thelight emitting face 8, providing a more accurate method of monitoring the life of the filter element. In actual use, the life of the filter is judged by illuminance values acquired by the air cleaning apparatus at the time of turning on and off the light source in the night background.

Applications of

The air purification equipment can be applied to the fields needing air purification in various fields, for example, the air purification equipment can be applied to rail transit, and the air purification equipment is placed on the top or the side wall of a carriage of the rail transit.

Hereinafter, the method for monitoring the lifetime of a filter cartridge and the air cleaning apparatus manufactured according to the embodiments of the present application are characterized based on specific examples, but it should be specifically noted that the scope of protection of the present application is defined by the claims and is not limited to the above specific embodiments.

Examples

In the following examples, the illuminance test method was performed as follows:

the light source is placed in the air intake cabin, and the uniform illumination emitted by the initial filter element (new filter element) is ensured. Wherein, the color temperature of the light source is warm white or positive white light, 4000-7000K. The curve value of the illuminance and the service time of the air purification equipment is measured by placing the air purification equipment on a ceiling and requiring the desktop illuminance to be between 100 and 300 lux (lx) according to the national standard GB50034-2013 'design Standard for architectural illumination'.

Example 1

As shown in fig. 3, thelight source 9 is placed on theside wall 15 of theintake compartment 3. Alight barrier 12 is provided on the side of thelight source 9 that passes through thefilter element 2 to prevent light emitted by thelight source 9 from leaking out laterally and to prevent light emitted by thelight source 9 from directly passing through thefilter element 2 and being emitted. Thelight barrier 12 is arranged in a direction perpendicular to the light of the light source to prevent light emitted by thelight source 9 from directly passing through thefilter element 2 and being emitted. The side of thelight barrier 12 close to thelight source 9 has a light-reflecting surface for reflecting light into theintake compartment 3. A light-reflectingsurface 14 can be provided in theair intake compartment 3 on the side facing thefilter element 2 for uniformly reflecting light onto thefilter element 2. Thelight barrier 13 is arranged in the circumferential direction of thewind wheel 11, so that light interference caused by the fact that a light source overflows from theair outlet 5 through the wind wheel air inlet is prevented, and judgment of the brightness of the light source on the air inlet face (the cover plate 1) by a user is influenced.

The values of the illuminance versus the time of use of the air cleaning apparatus in example 1 were measured in the manner described above (where the color temperature of the light source was SMT-LED 3.0 x 3.0 white 6500K, and the illuminometer was placed 1 meter directly below the light source), and table 1 was formed and plotted accordingly (see fig. 11).

Example 2

As shown in fig. 5, thelight source 9 is arranged in theair intake compartment 3 on the side facing thefilter insert 2. Thelight source 9 is a ribbon light source. Thelight barrier 13 can be arranged in the circumferential direction of thewind wheel 11, so that the light source is prevented from overflowing from theair outlet 5 through the wind wheel air inlet, light interference is avoided, and the judgment of the brightness of the light source on the air inlet surface (the cover plate 1) by a user is influenced. As shown in fig. 6, thelight source 9 is covered with alight source optimizer 16, which ensures a more uniform illumination through thefilter element 2 by refraction and reflection of the light source.

The values of the illuminance versus the time of use of the air cleaning apparatus in example 2 were measured in the manner described above (where the color temperature of the light source was SMT-LED 3.0 x 3.0 white 6500K, and the illuminometer was placed 1 meter directly below the light source), and are plotted in table 2 (see fig. 12).

Example 3

As shown in fig. 7, thelight source 9 is arranged in theintake compartment 3 on the side facing thefilter element 2; thelight source 9 is also located on the back of the reflectingsurface 14, at a distance from the reflectingsurface 14 and in a direction towards thefilter element 2. The light penetrates through the reflectingsurface 14 and faces the direction of thefilter element 2, and the uniform illumination emitted by thefilter element 2 is ensured through the reflection effect of the reflectingsurface 14. Thelight source 9 is covered with alight source optimizer 16, which ensures that the light emitted through thefilter element 2 is more uniform through the refraction and reflection of the light source. Thelight barrier 13 can be arranged in the circumferential direction of thewind wheel 11, so that the light source is prevented from overflowing from theair outlet 5 through the wind wheel air inlet, light interference is avoided, and the judgment of the brightness of the light source on the air inlet surface (the cover plate 1) by a user is influenced.

The values of the illuminance versus the time of use of the air cleaning apparatus in example 3 were measured in the manner described above (where the color temperature of the light source was SMT-LED 3.0 x 3.0 white 6500K, and the illuminometer was placed 1 meter directly below the light source), and are plotted in table 3 (see fig. 13).

Example 4

As shown in fig. 8, thelight source 9 is arranged in thewind intake compartment 3 on the circumference of thewind wheel 11 and perpendicular to thelight reflecting surface 14 of the wind intake compartment. Thelight barrier 12 is arranged on the outer ring of thelight source 9 and used for preventing light emitted by thelight source 9 from leaking from the side surface and preventing the light emitted by thelight source 9 from directly penetrating through thefilter element 2 to be emitted, and preventing the light source from overflowing from theair outlet 5 via the air inlet of the wind wheel to cause light interference and influence the judgment of the brightness of the light source on the air inlet surface (the cover plate 1) by a user.

The values of the illuminance versus the time of use of the air cleaning apparatus in example 4 were measured in the manner described above (where the color temperature of the light source was SMT-LED 3.0 x 3.0 white 6500K, and the illuminometer was placed 1 meter directly below the light source), and table 4 was formed and plotted accordingly (see fig. 14).

As can be seen from tables 1-4 above and FIGS. 11-14, the light emitted from the light source through the filter element will be reduced when more dust is adsorbed on the filter element. At this time, the light emitted from the light source is not enough to reach the illumination brightness required by the use place, so that the user can be prompted to replace the filter element.

The present application is not limited to the above embodiments. The above embodiments are merely examples, and embodiments having substantially the same configuration as the technical idea and exhibiting the same operation and effect within the technical scope of the present application are all included in the technical scope of the present application. In addition, various modifications that can be conceived by those skilled in the art are applied to the embodiments and other embodiments are also included in the scope of the present application, in which some of the constituent elements in the embodiments are combined and constructed, without departing from the scope of the present application.

Claims (10)

1. A method for monitoring air purifier filter element life, the method comprising:

a light source (9) is arranged in the air inlet cabin (3) between the air purifier filter element (2) and the air wheel component (4); and

the service life of the filter element of the air purifier is monitored by the brightness emitted by the light source (9) through the filter element (2).

2. The method according to claim 1, wherein the light source (9) is arranged on a side wall of the intake compartment (3), on a side of the intake compartment (3) facing the filter element (2) or on the same side of the intake compartment (3) as the filter element (2).

3. A method according to claim 1 or 2, wherein the method comprises arranging a light barrier (12) above the light source (9) in a direction perpendicular to the light rays of the light source (9).

4. A method according to claim 1 or 2, wherein the method comprises providing a wind wheel inlet flap (13) at the periphery of the wind wheel assembly (4).

5. The method according to claim 1 or 2, wherein the method comprises arranging a light source optimizer (16) above the light source (9).

6. The method of claim 5, wherein the light source optimizer (16) comprises a lens or a prism.

7. A method according to claim 1 or 2, wherein the method comprises providing a light-reflecting surface (14) in the intake compartment (3) on a side facing the filter element (2).

8. A method according to claim 1 or 2, wherein the method comprises indicating end of life of the filter element when the light emitted by the light source (9) through the filter element (2) is insufficient to meet the required illumination level for the air purifier application.

9. A method according to claim 1 or 2, wherein the method comprises monitoring air purifier filter element life by measuring light emitted by the light source (9) through the filter element (2) by an illumination sensor (17) located outside the air purifier.

10. The method of claim 1 or 2, wherein the air purifier is disposed on a roof or a sidewall of a compartment of the rail vehicle.

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