WO2000000775A1 - Purificateur d'air pour nettoyage local - Google Patents

Purificateur d'air pour nettoyage local Download PDF

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Publication number
WO2000000775A1
WO2000000775A1 PCT/JP1999/003547 JP9903547W WO0000775A1 WO 2000000775 A1 WO2000000775 A1 WO 2000000775A1 JP 9903547 W JP9903547 W JP 9903547W WO 0000775 A1 WO0000775 A1 WO 0000775A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
degree
blowing
air purifier
less
Prior art date
Application number
PCT/JP1999/003547
Other languages
English (en)
Japanese (ja)
Inventor
Toshio Tanaka
Toru Iwata
Hiroshi Mine
Koei Obata
Original Assignee
Daikin Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Publication of WO2000000775A1 publication Critical patent/WO2000000775A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
    • 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
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/06—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material with means keeping the working surfaces flat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air

Definitions

  • the present invention relates to a local cleaning type air cleaner, and a method of cleaning the air by sucking air from the outside, and blowing the purified air from an air outlet to a predetermined area in front of the air outlet.
  • the present invention relates to a locally purified air purifier capable of rapidly increasing the cleanliness of air (locally at a respiratory point of an allergic patient or the like).
  • BACKGROUND ART Conventionally, air purifiers have been widely used to purify indoor air. Especially in households with allergic patients, it is common to install an air purifier to purify the indoor air.
  • air purifiers that have been widely used in the past are manufactured for the purpose of purifying indoor air.For example, air purifiers that operate efficiently when installed in corners of rooms, etc. The outlet for clean air is provided upward. When an air purifier with this configuration is used, it is considered that the effect of house dust and mite allergen (mite antibody) on patients with allergic diseases can be significantly reduced by purifying the air in the room. ing.
  • House dust and mite allergens are also scattered due to scattering and raising and lowering of futons, resulting in an increase in the amount of floating dust and allergens.
  • house dust and mite allergen as antigens are different, but mite allergen particles are also a kind of dust dust, and mite allergen may be attached to house dust.
  • the properties of mite allergen particles, such as floating, scattering, and sedimentation are similar to those of Haustust. Therefore, it is common for house dust and mite allergens to float simultaneously.
  • the indoor air is gradually purified in accordance with the capacity of the air purifier, so that the respiratory points of allergic patients, etc.
  • the present invention has been made in view of the above-described problems, and has a local clean air that can rapidly increase the cleanliness of air in a predetermined range (a local area such as a respiratory point of an allergic patient) in front of an air outlet.
  • a predetermined range a local area such as a respiratory point of an allergic patient
  • the local cleaning type air purifier of claim 1 is characterized in that the blown air in a plane including a position separated by a predetermined distance of not less than 30 cm and not more than 150 cm in the direction of blowing air from the air blowing port.
  • the degree of dirt at the center of the flow is set to 1-7 or less of the degree of dirt outside the blown air flow.
  • the locally purified air purifier of claim 2 adopts the number of suspended particles as the degree of contamination.
  • the locally-cleaning type air purifier of claim 3 employs an air purifier capable of directly or indirectly measuring the degree of contamination from the number of suspended particles.
  • the locally purified air purifier according to claim 4 employs a floating allergen as the degree of contamination.
  • the operation sound of the air purifier in a plane including a position separated by a predetermined distance of not less than 30 cm and not more than 150 cm in the air blowing direction from the air blowing port is provided.
  • the level is set to 35 dB or less.
  • the locally purified air purifier according to claim 6 corresponds to an air outlet on a plane ⁇ including a position separated by a predetermined distance of not less than 3 O cm and not more than 150 cm in the air blowing direction from the air outlet.
  • the average wind speed of the blown air flow in the range of the blown air is set to 0.15 to 0.35 mZ s.
  • the blown air flow has an average wind speed of 70% or more of a range of the blown air corresponding to the air blowout port on a plane orthogonal to the air blowout direction. 0.5 to 1.5 times It is configured so that
  • the area having a degree of contamination of 17 or less of the degree of contamination outside the blown air flow has a size of 20 cm or more in a direction orthogonal to the direction of air blowing. It is configured to have.
  • a ninth aspect of the present invention there is provided a locally purified air purifier which employs a centrifugal fan as a blowing means for blowing clean air.
  • the degree of dirt at the center of the blown air flow in a plane including a position separated from the air outlet by a predetermined distance of 30 cm or more and 150 cm or less in the air blowing direction is the degree of dirt outside the blown air flow. Since it is set to 1 Z 7 or less, the respiratory point of allergic patients etc. is quickly and sufficiently cleaned within almost the entire width of the bed without giving a feeling of discomfort such as pressure. be able to. Specifically, even in a place with a high degree of air contamination, such as a bedroom, the degree of contamination can be reduced to the level of a living room.
  • the locally purified air purifier of claim 3 employs a degree of contamination that can be measured directly or indirectly from the number of suspended particles, the mite allergen which has a correlation with the number of suspended particles is used. Etc. can be sufficiently reduced, and the same effect as in claim 1 can be achieved.
  • the locally-cleaning type air purifier of claim 6 corresponds to an air outlet in a plane including a position separated from the air outlet by a predetermined distance of 30 cm or more and 150 cm or less in the air blowing direction. Since the average wind speed of the blown air flow in the range of blown air to be blown is set to 0.15 to 0.35 mZs, in addition to the function of any one of claims 1 to 5, Can be made not to feel.
  • the blown air flow has an average wind speed in a region orthogonal to the air blowing direction in an area of 70% or more of a range of the blown air corresponding to the air blowing port. Since the wind speed is 0.5 to 1.5 times the wind speed, the wind speed distribution can be made substantially uniform in addition to the operation of claim 6.
  • the area having a dirt degree of 1/7 or less of the degree of dirt outside the blown air flow has a size of 20 cm or more in a direction orthogonal to the air blowing direction. Therefore, in addition to the effects of any one of claims 1 to 7, it is possible to cover almost the width of the face of an allergic patient or the like.
  • FIG. 1 is a central longitudinal sectional view showing an embodiment of the local cleaning type air purifier of the present invention.
  • FIG. 2 is a front view showing the clean air outlet side.
  • Figure 3 is a diagram showing the wind speed distribution corresponding to Table 1.
  • FIG. 4 is a graph showing the residual ratio of mite allergens showing the distribution of cleanliness.
  • BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 is a central longitudinal sectional view showing an embodiment of the local cleaning type air purifier of the present invention
  • FIG. 2 is a front view showing a cleaning air outlet side.
  • This local air cleaner 10 has an air inlet la at the center of the rear, a casing 1 with a clean air outlet 1b over almost the entire front area, and an air inlet 1a.
  • a pre-filter for example, a filter that removes only large-diameter dust particles 2 provided on the back of the casing 1 so as to cover it, and a support member (not shown) in front of the air suction port 1a inside the casing 1
  • a fan 4 provided between the fan motor 3 and the air intake port 1a, the fan 4 being rotated by the fan motor 3, and an entire outer periphery of the fan 4.
  • a main filter supported in a rectangular space of the casing 1 at a predetermined distance before the opening of the cylindrical wall member 5.
  • the photocatalyst layer 8 provided on the end face of the front grille 7 and the main filter 6 on the upstream side of the air flow, and the photocatalyst layer 8 is provided at a predetermined position on the upstream side of the air flow from the photocatalyst layer 8, and A light source 9 for irradiating light including light.
  • the fan 4 is of a centrifugal type such as a turbo fan or a sirocco fan. This is because a high collection efficiency is used as the main filter 6, so a large static pressure is required for the air volume, and this requirement is satisfied.
  • the cover of the fan motor 3 also serves as a differential user on the ⁇ side of the air passage.
  • the photocatalyst layer 8 supports a metal oxide having a photocatalytic action.
  • a dirt prevention cover 9a is provided at a predetermined position of the light source 9 near the upstream side of the air flow.
  • a diffuser that reduces the blowout flow of the fan 4 to collect the dynamic pressure and that makes the blowout wind speed distribution uniform.
  • a stationary blade having a shape for removing the swirling speed component of the blowout flow by the fan 4 in the blowout flow path ⁇ .
  • a resistor is disposed at the outlet to make the wind speed distribution of the clean air outlet 1b uniform, or the resistance of the resistor is changed depending on the location. It is preferable to control the blowing wind speed distribution. Further, it is preferable to provide a sound absorbing material on the wall surface of the blow-out flow passage to reduce the operation noise.
  • the operation of the local cleaning type air purifier having the above configuration is as follows.
  • the fan 4 is of a centrifugal type (turbo fan)
  • the air drawn into the casing 1 from the air suction port 1a is centrifugal (outer direction) by the fan 4.
  • it is bent at a substantially right angle in the ventilation path formed by the cylindrical wall member 5, and is blown out from the opening of the cylindrical wall member 5 through the diffuser.
  • the blown air is guided into a rectangular space downstream of the cylindrical wall member 5 and diffuses slightly outward, and then passes through the main filter 6 to become clean air.
  • the output of the fan motor 3 in accordance with the fluid resistance of the main filter 6, in the clean air blowing direction defined by vertical flaps, horizontal flaps, etc.
  • a sufficient clean space can be realized in a plane including a desired position of cm in a range of 50 cm (preferably in a range of 40 cm to 100 cm).
  • the lower limit distance is set to 30 cm, preferably 40 cm, so as not to give a feeling of oppression to the user, and the upper limit distance is set to 150 cm, preferably 100 cm.
  • the reason for setting cm is to cover almost the entire range of the bed width.
  • the degree of contamination of the clean space can be determined by selecting the air purifying ability of the main filter 6 to be outside the range of the clean air blowout flow (the blowout air flow from the local clean air purifier 10 has a predetermined flow velocity). In the short time after startup, it cannot reach a certain clean space due to the influence of the surrounding dirty air, that is, outside of the effective range capable of forming a clean space. 7 or less, preferably 1/10. Specifically, while the floating Daniare Rugen concentrations outside the scope of the clean air blowout flow is 2 2 0 pg Z m 3 in the bedroom, the clean space Airborne mite allergen concentration in the living room can be reduced to 30 pg / m " ⁇ Sakaguchi M, I nouye
  • the photocatalysis by the photocatalyst layer 8 and the light source 9 can also achieve inactivation, alteration, decomposition, removal of chemical substances such as formaldehyde, deodorization, and the like, such as danallergen.
  • the width of the clean space can be made 20 cm or more by giving directivity to the blowing of the clean air by vertical flaps and horizontal flaps (not shown).
  • the clean space can cover the face of an allergic patient or the like.
  • the resistance coefficient ⁇ of the ventilation resistor represented by the main filter 6 is set to be larger than min and smaller than ⁇ max.
  • amin is a lower limit value at which the wind speed distribution can be made substantially uniform
  • amax is an upper limit value at which noise applied to the user can be reduced to a predetermined level or less.
  • a min is almost 1, and a max can be calculated from the required noise level as follows.
  • the specific noise level of the fan to be used is K sa ⁇ dB (A) ⁇ and the air volume is Q (m 3 / min)
  • the pressure loss ⁇ ⁇ of the ventilation resistor is expressed by equation (1).
  • the difference between the ratio t noise level K sa fans use desirable noise level SPL in the use point is expressed by equation (2).
  • the necessary air volume Ri is 0. 7 ⁇ 2 m 3 Zm in der, if outlet size ventilation resistor device size 0. 3 m X 0. 3 m, mean transit wind speed 0.1 3 to 0.3 7 mZ s.
  • Table 1 shows an example of the wind speed distribution in a plane 50 cm away from the clean air outlet lb.
  • the wind speed is expressed in cm / s.
  • the rotation speed of the fan motor 3 was set to 65500 rpm, and the main filter 6 was made of a non-woven polypropylene fabric having a thickness of 35 mm.
  • the operating sound level in this case is 50 cm away from the clean air outlet lb. 34.4 dB (A), and in a plane including a position 50 cm away from the clean air outlet lb, the concentration of the Daniellegen at the center of the clean air outlet and the clean air outlet
  • the ratio to mite allergen concentration out of range was 1.6: 100.
  • Fig. 3 shows the wind speed distribution corresponding to Table 1.
  • A1 represents the region where the wind speed is 0.25 to 0.30 mZ s
  • A2 represents the region where the wind speed is 0.20 to 0.25 m / s
  • A3 is the wind speed. Is in the range of 0.15 to 0.20 mZ s
  • a 4 is in the range of 0.10 to 0.15 mZ s
  • a 5 is in the range of 0.05 to 0.10 mZ s m / s
  • A6 indicates a region where the wind speed is 0.00 to 0.05 m / s.
  • Fig. 4 shows the residual ratio of mite allergens to show the distribution of cleanliness.
  • the residual rate of mite allergens outside the range of the clean air blowing flow is set to 1. Also, in FIG.
  • a 1 indicates a region where the residual ratio is 0.7 to 0.8
  • a 2 indicates a region where the residual ratio is 0.6 to 0.7
  • a 3 indicates a region where the residual ratio is 0.5
  • A4 is the area where the residual rate is 0.4 to 0.5
  • A4 is the area where the residual rate is 0.3 to 0.4
  • A6 is the area where the residual rate is 0.3 to 0.4. Is in the range of 0.2 to 0.3
  • A7 is in the range of survival rate of 0.1 to 0.2
  • A8 is in the range of survival rate of 0.0 to 0.1. .
  • a sufficient clean space can be realized within a range of 10 cm on both sides based on the center of the clean air flow.
  • the operating noise at the position of the user should be reduced to 35 dB or less. And extremely quiet operation can be realized. As a result, it can be used without any inconvenience even when the user is sleeping.
  • an air filtration filter is used as a ventilation resistor
  • a sirocco fan is used as a blower.
  • the specific noise level of the sirocco fan at 0.5 m is 47 dB. If it is (a), an air volume necessary 0. 7 ⁇ 2 m 3 Bruno min, if outlet size ventilation resistor size 0. 3 m X 0. 3 m devices, mean transit wind speed Is between 0.13 and 0.37 m / s.
  • the wind speed distribution can be made almost uniform.
  • the noise level at the point of use can be suppressed to 30 dB (A) or less.
  • the rotation axis of the fan 4 is set at a right angle to the clean air blowing surface, so that the rotation axis of the fan 4 is set parallel to the clean air blowing surface.
  • the overall depth can be reduced as compared with.
  • the blowout air is once collected at one location, and then the blowout air is blown out. To reduce the height or width of the cross section of the whole ventilation path, and reduce the height or width of the entire local cleaning type air cleaner. be able to.
  • the local cleaning type air purifier of the present invention can be used for an application for rapidly cleaning a local area in front of an air outlet.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

Purificateur d'air pour nettoyage local, qui comprend un boîtier (1) comportant un orifice d'aspiration (1a) d'air, disposé au centre de sa partie postérieure ; une sortie (1b) d'air propre, formée sur pratiquement toute sa surface avant ; un ventilateur (4) entraîné par un moteur (3) de ventilateur, disposé à l'intérieur du boîtier (1) ; un élément paroi cylindrique (5) entourant toute la périphérie du ventilateur (4), dont il est séparé d'une certaine distance ; et un filtre principal (6), disposé dans le compartiment carré du boîtier (1) et décalé vers l'avant d'une certaine distance par rapport à la partie ouverte de l'élément paroi cylindrique (5). Le degré de contamination de l'air à un emplacement désiré, compris entre 30 et 150 cm de la sortie (1b) d'air propre, est ramené à 1/7 ou moins, de préférence à 1/10, par rapport à celui que l'on trouve à un emplacement situé hors de la zone du flux de décharge d'air propre, ce qui permet de nettoyer rapidement l'air dans une zone spécifiée située devant ladite sortie (1b) d'air propre.
PCT/JP1999/003547 1998-06-30 1999-06-30 Purificateur d'air pour nettoyage local WO2000000775A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10185450A JP2000018657A (ja) 1998-06-30 1998-06-30 局所清浄型空気清浄機
JP10/185450 1998-06-30

Publications (1)

Publication Number Publication Date
WO2000000775A1 true WO2000000775A1 (fr) 2000-01-06

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WO (1) WO2000000775A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6527838B2 (en) 2000-07-18 2003-03-04 Giovanni D. Volo Indoor fan filter
US7670401B2 (en) 2005-02-01 2010-03-02 Zipwall, Llc Filter mounts for a portable fan and methods for mounting a filter to a portable fan
CN101797460A (zh) * 2009-10-26 2010-08-11 胡广武 空气交换进风机构的过滤器自动除尘装置
USD777901S1 (en) 2015-10-13 2017-01-31 Zipwall, Llc. Filter mount for a portable fan
CN108644912A (zh) * 2018-05-02 2018-10-12 高峰 一种高效的家用空气净化器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5696680B2 (ja) * 2012-03-28 2015-04-08 コトヒラ工業株式会社 集塵機
JP5864344B2 (ja) 2012-04-09 2016-02-17 バルミューダ株式会社 空気清浄装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6377514A (ja) * 1986-09-22 1988-04-07 Ebara Res Co Ltd 空気清浄器
JPH0742980A (ja) * 1993-05-28 1995-02-10 Matsushita Electric Works Ltd 空気清浄器及び空気清浄装置
JPH08309134A (ja) * 1995-05-18 1996-11-26 Sanyo Electric Co Ltd 空気清浄機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6377514A (ja) * 1986-09-22 1988-04-07 Ebara Res Co Ltd 空気清浄器
JPH0742980A (ja) * 1993-05-28 1995-02-10 Matsushita Electric Works Ltd 空気清浄器及び空気清浄装置
JPH08309134A (ja) * 1995-05-18 1996-11-26 Sanyo Electric Co Ltd 空気清浄機

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6527838B2 (en) 2000-07-18 2003-03-04 Giovanni D. Volo Indoor fan filter
US6874209B2 (en) 2000-07-18 2005-04-05 Giovanni D. Volo Indoor fan filter
US9458862B2 (en) 2005-02-01 2016-10-04 Zipwall, Llc. Filter mounts for a portable fan and methods for mounting a filter to a portable fan
US7905938B2 (en) 2005-02-01 2011-03-15 Zipwall, Llc Filter mounts for a portable fan and methods for mounting a filter to a portable fan
US8137426B2 (en) 2005-02-01 2012-03-20 Zipwall, Llc Filter mounts for a portable fan and methods for mounting a filter to a portable fan
US8349047B2 (en) 2005-02-01 2013-01-08 Zipwall Llc Filter mounts for a portable fan and methods for mounting a filter to a portable fan
US8591619B2 (en) 2005-02-01 2013-11-26 Zipwall Llc Filter mounts for a portable fan and methods for mounting a filter to a portable fan
US8801824B2 (en) 2005-02-01 2014-08-12 Zipwall Llc Filter mounts for a portable fan and methods for mounting a filter to a portable fan
US7670401B2 (en) 2005-02-01 2010-03-02 Zipwall, Llc Filter mounts for a portable fan and methods for mounting a filter to a portable fan
US9784287B2 (en) 2005-02-01 2017-10-10 Zipwall, Llc. Filter mounts for a portable fan and methods for mounting a filter to a portable fan
CN101797460A (zh) * 2009-10-26 2010-08-11 胡广武 空气交换进风机构的过滤器自动除尘装置
USD777901S1 (en) 2015-10-13 2017-01-31 Zipwall, Llc. Filter mount for a portable fan
CN108644912A (zh) * 2018-05-02 2018-10-12 高峰 一种高效的家用空气净化器
CN108644912B (zh) * 2018-05-02 2021-01-19 深圳市菲戈科技有限公司 一种高效的家用空气净化器

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