KR20170055068A - Air cleaning apparatus - Google Patents

Air cleaning apparatus Download PDF

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Publication number
KR20170055068A
KR20170055068A KR1020150157571A KR20150157571A KR20170055068A KR 20170055068 A KR20170055068 A KR 20170055068A KR 1020150157571 A KR1020150157571 A KR 1020150157571A KR 20150157571 A KR20150157571 A KR 20150157571A KR 20170055068 A KR20170055068 A KR 20170055068A
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KR
South Korea
Prior art keywords
filter
air
filter unit
unit
fan
Prior art date
Application number
KR1020150157571A
Other languages
Korean (ko)
Other versions
KR101764498B1 (en
Inventor
김학준
김용진
한방우
우창규
Original Assignee
한국기계연구원
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Priority to KR1020150157571A priority Critical patent/KR101764498B1/en
Publication of KR20170055068A publication Critical patent/KR20170055068A/en
Application granted granted Critical
Publication of KR101764498B1 publication Critical patent/KR101764498B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0086—Filter condition indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/4227—Manipulating filters or filter elements, e.g. handles or extracting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/44—Auxiliary equipment or operation thereof controlling filtration
    • B01D46/444—Auxiliary equipment or operation thereof controlling filtration by flow measuring
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/52—Filter identification means

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Air Conditioning Control Device (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The present invention relates to an air purifying apparatus, which comprises a sensor unit including a sensing fan that rotates at a flow velocity of air that has passed through a filter, and a sensor that measures a rotation speed of the sensing fan by using infrared rays, The present invention provides an air purification apparatus capable of informing a replacement timing of a filter by deriving a purification capability index, thereby providing an air purification apparatus with a very high reliability with remarkably reduced manufacturing cost.

Description

{AIR CLEANING APPARATUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier, and more particularly, to an air purifier capable of informing a replacement time of a filter based on a rotation speed of a sensing fan rotated by a flow rate of air passing through a filter installed in an air purifier .

Generally, an air purifier is a sanitary device that filters contaminants, fine dust, and the like in the air sucked into the suction port during forced circulation of air in the room, and discharges only the cleaned air to the discharge port.

A filter for collecting, sterilizing and deodorizing contaminated indoor air is provided in the air inlet of the air purifier. Such a filter should be replaced if the filter becomes clogged after use for a predetermined period of time. In order for the air cleaner to exhibit effective performance, the filter replacement time should be appropriately adjusted.

The conventional method for determining the replacement time of the clogged filter is performed by calculating a rotation amount or a rotation time of the fan motor by receiving a clock signal generated when the fan motor for rotating the fan motor for sucking contaminated air from the outside rotates, The rotation amount or the rotation time is compared with a preset filter replacement value, and when the rotation amount or the rotation time is larger than the set value, it is determined that the filter replacement time has come.

Such a conventional method for determining the filter replacement time is determined as a filter replacement time even if there is no need to replace the filter when the air pollution degree of the room in which the air cleaner operates is determined as the filter replacement time. The reliability of the filter replacement timing determination is deteriorated.

Accordingly, in Japanese Patent Application Laid-Open No. 10-1997-0064687, there is a technique of providing an air velocity sensor for measuring the air velocity of air discharged from the filter, and Japanese Patent Application Laid-Open No. 10-2002-0075656 discloses a technique of detecting air flow rate However, there is a problem that the sensor for measuring the flow velocity directly discharged from the filter is expensive and the price of the product is remarkably increased.

An object of the present invention is to solve the conventional problems as described above, and it is an object of the present invention to provide a sensing fan that rotates according to a flow rate of air passing through a filter of an air purifier, And an air purifying device capable of informing a filter replacement timing.

Another object of the present invention is to provide an air purifying apparatus capable of remarkably reducing the manufacturing cost by using a sensor using infrared rays, the price of which is very low in price, through the filter.

In addition, even if a sensor using infrared rays whose price is very cheap is used as the flow rate of the air passing through the filter, it is possible to derive the cleaning ability index substantially equal to the theoretical value of the cleaning ability index of the air cleaning apparatus, And an air purifying device capable of performing air purifying.

According to an aspect of the present invention, there is provided an air purifier including: a main body housing provided with an inlet through which outside air flows and a discharge opening through which air is discharged; A filter unit installed inside the main body housing; A blowing fan installed at a rear end of the filter unit and discharging air at a front end of the filter unit to a rear end of the filter unit; A sensing fan disposed between the filter unit and the air blowing fan or disposed at a rear end of the air blowing fan and rotated by a velocity of air passing through the filter unit; And a sensor unit including a sensor for sensing the air flow rate of the air passing through the filter unit based on the measured rotation speed of the sensing fan and calculating a flow rate of air passing through the filter unit based on the flow rate, Device. ≪ / RTI >

Here, the flow rate of the air passing through the filter unit is calculated based on the rotational speed measured by the sensor unit, the flow rate of the air passing through the filter unit is calculated by multiplying the calculated flow rate by the cross-sectional area of the sensing fan, The controller may further include a control unit for deriving a cleaning capability index which is a value obtained by multiplying the flow rate by the filter dust collection efficiency of the filter unit and then activating the notification unit if the derived cleaning ability index is smaller than a set reference index.

In addition, the sensor may include a light emitting element and a light receiving element arranged to face each other with the sensing fan therebetween.

In addition, the filter unit may be arranged in the order of a pre-treatment filter, a functional filter, and a post-treatment filter in the air flow direction.

In addition, the filter unit may be provided so that each filter is integrally provided and replaceable.

Further, the filter unit may be installed so that each filter is individually replaceable.

The filter unit, the blower fan, and the sensor unit may be installed in at least one of an inlet of the main body housing and a discharge port of the main housing.

According to the present invention, there is provided an air purifier that is provided with a sensing fan that rotates according to the flow rate of air that has passed through a filter of an air purifier, and measures the rotation speed of the sensing fan and informs the replacement time of the filter based on the measured rotational speed .

Also, an air purification apparatus is provided which can significantly reduce the manufacturing cost by using a sensor using infrared rays, the price of which is very low in price, through the filter.

In addition, even if a sensor using infrared rays whose price is very cheap is used as the flow rate of the air passing through the filter, it is possible to derive the cleaning ability index substantially equal to the theoretical value of the cleaning ability index of the air cleaning apparatus, There is provided an air purification apparatus capable of performing air cleaning.

1 is a schematic view of an air purification apparatus according to a first embodiment of the present invention,
Fig. 2 is a partial sectional view of Fig. 1,
FIG. 3 is a detailed view of the sensor unit of FIG. 2,
Figs. 4 and 5 are a sensing state diagram of the sensor unit of Fig. 2,
6 is an experimental graph of an air purifying apparatus according to the first embodiment of the present invention.

Prior to the description, components having the same configuration are denoted by the same reference numerals as those in the first embodiment. In other embodiments, configurations different from those of the first embodiment will be described do.

Hereinafter, an air purifying apparatus according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic view of an air purification apparatus according to a first embodiment of the present invention, and FIG. 2 is a partial sectional view of FIG.

1 and 2, the air purifying apparatus according to the first embodiment of the present invention includes a main body housing 10, a filter unit 20, a blowing fan 30, a sensor unit 40, a control unit 50, And a notification unit (60).

The main body housing 10 is formed in a substantially hexahedron shape having a space therein, and has an inlet port (not shown) through which external air flows and a discharge port 11 through which internal air is discharged to the outside.

The filter unit 20 is provided to filter air flowing into the interior of the main body housing 10. The main body housing 10 includes a pretreatment filter 21, a functional filter 22, and a post-treatment filter 23, Are arranged in order and installed on the discharge port 11 side.

Each of the filters of the filter unit 20 may be provided integrally with the filter unit 20 so as to be replaceable, or may be installed such that the filters are individually replaceable.

In this embodiment, the filter unit 20, the blowing fan 30, and the sensor unit 40 are provided on the side of the discharge port 11, and if necessary, have.

The air blowing fan 30 is installed at the rear end of the filter unit 20 and discharges the air at the front end of the filter unit 20 to the rear end of the filter unit 20.

That is, the blowing fan 30 is disposed between the filter unit 20 and the discharge port 11 to form an air flow that discharges the air inside the main body housing 10 through the filter unit 20 to the discharge port 11 side do.

3 is a detailed view of the sensor unit of Fig. 3, the sensor unit 40 includes a sensing fan 41 and a sensor, and is disposed between the filter unit 20 and the blowing fan 30 or disposed at a rear end of the blowing fan 30. FIG. In this embodiment, it is shown that the sensor unit 40 is disposed between the filter unit 20 and the blowing fan 30.

The sensing fan 41 is installed to rotate by the velocity of the air passing through the filter unit 20. The sensor includes a light emitting element 42 and a light receiving element 43 arranged to face each other with the sensing fan 41 interposed therebetween so that infrared rays generated from the light emitting element 42 are received by the light receiving element 43 do.

FIGS. 4 and 5 are sensing states of the sensor unit of FIG. 2. FIG. When the sensing fan 41 is rotated, the wings of the sensing fan 41 may be positioned between the light emitting element 42 and the light receiving element 43, or may not be positioned.

4, when the wings of the sensing fan 41 are positioned between the light emitting element 42 and the light receiving element 43, the infrared rays generated by the light emitting element 42 are transmitted to the sensing fan 41, So that it can not reach the light receiving element 43.

5, when the wings of the sensing fan 41 are not positioned between the light emitting element 42 and the light receiving element 43, the infrared rays generated by the light emitting element 42 are transmitted to the sensing fan 41 And reaches the light receiving element 43. [

As a result, the faster the rotation speed of the sensing fan 41, the faster the light receiving element 43 is able to continuously receive and receive light.

The digital signal for receiving or non-receiving infrared rays is transmitted to the control unit 50.

The control unit 50 calculates the flow rate of the air passing through the filter unit 20 based on the rotational speed measured by the sensor unit 40 and multiplies the calculated flow rate by the cross sectional area of the sensing fan 41, Calculates a flow rate of the air discharged through the valve (20), and derives a cleaning capability index which is a value obtained by multiplying the calculated flow rate by the filter coefficient of the filter section (20).

Specifically, the rotation speed (rpm) of the sensing fan 41 is calculated by digital pulses for the light reception and non-reception light transmitted from the light receiving element 43, and the rotation speed is converted into a flow rate v).

The flow rate Q is calculated by multiplying the calculated flow velocity v by the area of the sensing fan 41 and the cleaning efficiency index P is derived by multiplying the calculated flow rate by the filter dust collection efficiency? do. At this time, the filter dust collection efficiency (η) is 90% to 95% in the case of the HEPA filter.

Then, the notification unit 60 can be operated if the derived cleaning capability index is smaller than a preset reference index (usually 50%). At this time, the notification unit 60 may be a voice, a music, a lamp, or the like.

6 is an experimental graph of an air purifying apparatus according to the first embodiment of the present invention. Referring to FIG. 6, the theoretical value of the cleaning ability of the air purifier according to the weight accumulated by accumulating dust on each filter, and the experimental value measured using infrared rays as the rotational speed of the sensing fan 41, as in the present invention, .

That is, reliability of the sensing fan 41 can be remarkably improved by measuring the rotation speed of the sensing fan 41 using the infrared rays, as in the present invention, and determining the exact replacement timing of the filter.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

[Description of Reference Numerals]
10: main body housing 11: discharge port
20: filter section 21: preprocessing filter
22: Functional filter 23: Post-processing filter
30: blower fan 40: sensor unit
41: sensing fan 42: light emitting element
43: light receiving element 50:
60: Notification section

Claims (7)

In the air purification apparatus,
A main body housing provided with an inlet through which external air flows and a discharge opening through which internal air is discharged;
A filter unit installed inside the main body housing;
A blowing fan installed at a rear end of the filter unit and discharging air at a front end of the filter unit to a rear end of the filter unit; And
A sensing fan disposed between the filter unit and the blowing fan or disposed at a rear end of the blowing fan and rotating according to a flow velocity of the air passing through the filter unit, a sensor for measuring the rotation speed of the sensing fan using infrared rays, And a sensor unit,
Calculates a flow rate of the air passing through the filter unit based on the measured rotation speed of the sensing fan, and notifies the replacement time of the filter unit based on the flow rate. The method according to claim 1,
Calculating a flow rate of air passing through the filter section based on the rotational speed measured by the sensor section, calculating a flow rate of the air passing through the filter section by multiplying the calculated flow rate by the cross-sectional area of the sensing fan, Further comprising a control unit for deriving a cleaning capability index which is a value obtained by multiplying the filter dust collection efficiency of the filter unit and then activating the notification unit if the derived cleaning ability index is smaller than a set reference index. The method according to claim 1,
Wherein the sensor includes a light emitting element and a light receiving element arranged to face each other with the sensing fan interposed therebetween. The method according to claim 1,
Wherein the filter unit is arranged in the order of a pre-treatment filter, a functional filter and a post-treatment filter in the air flow direction. 5. The method of claim 4,
Wherein the filter unit is provided so that each filter is integrally provided and replaceable. 5. The method of claim 4,
Wherein the filter unit is installed so that each filter is individually replaceable. The method according to claim 1,
Wherein the filter unit, the blowing fan, and the sensor unit are installed in at least one of an inlet of the main housing and an outlet of the main housing.
KR1020150157571A 2015-11-10 2015-11-10 Air cleaning apparatus KR101764498B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150157571A KR101764498B1 (en) 2015-11-10 2015-11-10 Air cleaning apparatus

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Application Number Priority Date Filing Date Title
KR1020150157571A KR101764498B1 (en) 2015-11-10 2015-11-10 Air cleaning apparatus

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KR20170055068A true KR20170055068A (en) 2017-05-19
KR101764498B1 KR101764498B1 (en) 2017-08-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107520218A (en) * 2017-10-08 2017-12-29 佛山市因诺威特科技有限公司 A kind of intelligent air exhausting device being applied to during forging
CN108226571A (en) * 2017-11-27 2018-06-29 江阴市永兴机械制造有限公司 A kind of measurement calibration method of numerical control compressed air shotblasting machine flow velocity

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3390378B2 (en) 1999-10-15 2003-03-24 埼玉日本電気株式会社 Air filter clogging detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107520218A (en) * 2017-10-08 2017-12-29 佛山市因诺威特科技有限公司 A kind of intelligent air exhausting device being applied to during forging
CN108226571A (en) * 2017-11-27 2018-06-29 江阴市永兴机械制造有限公司 A kind of measurement calibration method of numerical control compressed air shotblasting machine flow velocity
CN108226571B (en) * 2017-11-27 2020-03-06 江阴市永兴机械制造有限公司 Method for measuring and calibrating flow velocity of numerical control shot blasting machine

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