JP2004160409A - Air cleaner - Google Patents

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Publication number
JP2004160409A
JP2004160409A JP2002331513A JP2002331513A JP2004160409A JP 2004160409 A JP2004160409 A JP 2004160409A JP 2002331513 A JP2002331513 A JP 2002331513A JP 2002331513 A JP2002331513 A JP 2002331513A JP 2004160409 A JP2004160409 A JP 2004160409A
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JP
Japan
Prior art keywords
filter
suction port
centrifugal blower
air
dust
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP2002331513A
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Japanese (ja)
Inventor
Hiroyasu Yoneyama
裕康 米山
Ryoji Sato
良次 佐藤
Katsuaki Nagahashi
克章 長橋
Tetsushi Kishitani
哲志 岸谷
Hideji Ohara
秀司 尾原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2002331513A priority Critical patent/JP2004160409A/en
Publication of JP2004160409A publication Critical patent/JP2004160409A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To obtain an air cleaner which exhibits high dust collection efficiency, produces little noise and has improved energy-saving effect in spite of an increase in gas quantity. <P>SOLUTION: The air cleaner which has a fan motor 3 and a centrifugal blower 2 in approximately a central part of a casing 1, a suction opening 5a at the center of the under surface of the casing 1 and a blow-off opening 5b in the outer peripheral part thereof is provided with a bellmouth 5 for separating the air generated by rotation of the blower 2 to a suction opening side and a blow-off opening side, a prefilter 6, a deodorizing filter 7, and a filter 4 for dust collection arranged on the outer peripheral side of the blower 2. The air sucked from the opening 5a passes the prefilter 6 and the filter 7, and passes the filter 4 then is blown off from the blow-off opening 5b via the blower 2. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、本体が天井空間内に配置され、天井面に沿って空気の取り入れ口および排出口が配置される天井埋込形の空気清浄機に関するものである。
【0002】
【従来の技術】
従来、天井埋込形空気清浄機において、室内空間側へ臨む面にメンテナンス扉を設け、そのパネル中央部の吸込み口に塵埃を集塵するための電気集塵器を配置することが知られ、例えば、特開平9−38523号公報に記載されている。
【0003】
【特許文献1】
特開平9−38523号公報
【0004】
【発明が解決しようとする課題】
上記従来技術においては、吸込み口に電気集塵器を配置するので、HEPAフィルタ等の集塵効率の高いフィルタを設置したものに比べ、風速に対する圧力損失は小さいが、風速が早くなればなるほど集塵効率が低下する。
【0005】
本発明の目的は、風量の増加に対しても集塵効率が高く、騒音が小さく、省エネ性の向上した空気清浄機を提供することにある。
【0006】
【課題を解決するための手段】
上記課題を解決するため、本発明は、筐体内の略中央部にファンモータ及び遠心送風機を配置し、筐体の下面の中央に吸込み口、該吸込み口の外周部に吹出し口を有するパネルが配置され、吸込み口に取り外し可能とされたグリルが設けられた空気清浄機において、遠心送風機の回転により生じる風を吸込み口側、吹出し口側に分離するベルマウスと、グリルの上部に設けられたプレフィルタ及び脱臭フィルタと、遠心送風機の外周側に配置された集塵用フィルタと、を備え、吸込み口から吸込まれた空気はグリル、プレフィルタ、脱臭フィルタを通過しベルマウス、遠心送風機を介して集塵用フィルタを通って吹出し口から吹出されるものである。
【0007】
また、上記のものにおいて、集塵用フィルタがロの字形であることが望ましい。
さらに、上記のものにおいて、集塵用フィルタはそれぞれが板状とされ、遠心送風機の外周にロの字形に配置されたことが望ましい。
さらに、上記のものにおいて、集塵用フィルタは、その最外径が吸込み口より小さくされ、吸込み口より取り外し可能とされたことが望ましい。
さらに、本発明は、筐体内の略中央部に遠心送風機を配置し、筐体の下面の中央に吸込み口、該吸込み口の外周部に吹出し口を有する空気清浄機において、吸込み口側に設けられたベルマウスと、遠心送風機の外周と吹出し口との間に配置された集塵用フィルタと、を設け、吸込み口から吸込まれた空気は、ベルマウス及び遠心送風機を介して集塵用フィルタ4を通って吹出し口から吹出されるものである。
【0008】
【発明の実施の形態】
以下、図を参照して本発明の一実施例の形態を説明する。
図1は天井埋め込み型空気清浄機の断面図、図2はパネル5の吸込み口5aに設けられている吸込みグリル8、プレフィルタ6、脱臭フィルタ7を除いた下面図が示されている。筐体1の内部には筐体1の略中央部にファンモータ3、ファンモータ3の回転軸に遠心送風機2、遠心送風機2の回転により生じる風を吸込み口側、吹出し側に分離するためのベルマウス9を備え、遠心送風機2の外周側に細かな塵埃を集塵するための集塵用フィルタ4が配置されている。集塵用フィルタ4は例えば集塵効率95%以上の性能を有する準HEPAクラス以上のフィルタを示す。
【0009】
また、筐体1の下面には中央部の吸込み口5aに分離可能、つまり取り外し可能とされたグリル8、吸込み口5aの外周部に吹出し口5bを有するパネル5が配置されている。パネル5の吸込み口5aに設けられたグリル8の上部には、比較的大きな塵埃を集塵するプレフィルタ6、臭気を除去する脱臭フィルタ7が取付けられている。
吸込み口5aから吸込まれた空気はグリル8、プレフィルタ6、脱臭フィルタ7を通過することにより比較的大きな塵埃を集塵あるいは脱臭され、ベルマウス9を介し、遠心送風機2を通過し、遠心送風機2の外周側に配置された集塵用フィルタ4を通過することにより、プレフィルタ6で集塵できなかった細かな塵埃が集塵され、パネル5の吹出し口5bから清浄された空気として吹出される。
【0010】
以上のように、集塵効率の高いフィルタ4を遠心送風機2の外周側にロの字状に配置したので、吸込み口5aにフィルタ4を設けたものに比べ風の通過できる面積を大きくすることができる。したがって、同一風量で比較した場合の圧力損失を低減することができる。例えば吸込み口5aが500mm×500mmの場合、フィルタ4の幅が吸込み口5aと同等であれば、フィルタ4の高さHを250mmにすることで吸込み口5aにフィルタ4を配置した場合に比べ2倍の面積を確保できることになる。その結果、同一風量で比較した場合、集塵効率の高いフィルタ4を通過する風速を小さくして、圧力損失を低減し、騒音を低減できる。
【0011】
また、図3は、他の実施の形態を示し、遠心送風機2の外周側にロの字状に配置した集塵用フィルタ4を円筒形に、かつ吹出し口5bの内側になるような大きさとしたもので、集塵用フィルタ4の形状は簡単になり、部品点数が削減され、製作が容易となる。ただし、ロ形の集塵用フィルタ4の方が、風の通過する面積はより大きくなる。
【0012】
図4は、さらに、他の実施の形態を示し、ロ形の集塵用フィルタ4を各面毎に分離したもの、つまりそれぞれが板状の集塵用フィルタ4が遠心送風機2の外周にロの字状に配置されている。これにより、図5に示すようにパネル5の中央部に設けられた分離可能な吸込み口5aに設けられたグリル8、プレフィルタ6、脱臭フィルタ7を取り外すことで集塵用フィルタ4をパネル5を取り外すことなく取出すことができる。したがって、メンテナンス作業が容易になる。
【0013】
さらに、図6(集塵用フィルタ4を収納した状態)、図7(集塵用フィルタ4を取り外した状態)に示すように遠心送風機2の外周側に設けられた集塵用フィルタ4の幅W1を吸込み口5aの幅Wより小さくすることにより、グリル8、プレフィルタ6、脱臭フィルタ7を取り外すことで集塵用フィルタ4はパネル5を取り外すことなく、フィルタを分離構造としなくても取り出すことが可能になる。集塵用フィルタ4の清掃などのメンテナンス作業が容易になる。
【0014】
【発明の効果】
以上述べたように本発明によれば、大風量で集塵効率が高く、騒音が小さく、省エネ性の向上した空気清浄機が得られる。
【図面の簡単な説明】
【図1】本発明による一実施の形態である空気清浄機を示す断面図。
【図2】図1を下からみた平面図。
【図3】他の実施の形態を示す平面図。
【図4】一実施の形態において、集塵用フィルタ分離構造を示す斜視図。
【図5】一実施の形態において、集塵用フィルタの取り外し状態を示す断面図。
【図6】他の実施の形態において、集塵用フィルタの幅W1と吸込み口の幅Wと関係を説明する断面図。
【図7】他の実施の形態において、集塵用フィルタの取り外し状態を示す断面図。
【符号の説明】
1…筐体、2…遠心送風機、3…ファンモータ、4…集塵用フィルタ、5…パネル、5a…吸込み口、5b…吹出し口、6…プレフィルタ、7…脱臭フィルタ、8…グリル、9…ベルマウス。
[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a ceiling-embedded type air cleaner in which a main body is disposed in a ceiling space and an air intake and an exhaust are arranged along a ceiling surface.
[0002]
[Prior art]
Conventionally, it is known that in a ceiling embedded type air cleaner, a maintenance door is provided on a surface facing the indoor space side, and an electric dust collector for collecting dust is disposed at a suction port at the center of the panel, For example, it is described in JP-A-9-38523.
[0003]
[Patent Document 1]
JP-A-9-38523
[Problems to be solved by the invention]
In the above prior art, since an electric precipitator is disposed at the suction port, the pressure loss with respect to the wind speed is small as compared with the case where a filter having a high dust collection efficiency such as a HEPA filter is installed, but the higher the wind speed, the lower the dust collection. Dust efficiency decreases.
[0005]
An object of the present invention is to provide an air purifier having high dust collection efficiency, low noise and improved energy saving even when the air volume increases.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a panel having a fan motor and a centrifugal blower arranged at a substantially central portion in a housing, a suction port at a center of a lower surface of the housing, and a blowout port at an outer peripheral portion of the suction port. In an air purifier provided with a grill which can be removed at the suction port, a bell mouth for separating wind generated by rotation of the centrifugal blower into a suction side and a blow side, and provided at an upper portion of the grill. A pre-filter and a deodorizing filter, and a dust-collecting filter arranged on the outer peripheral side of the centrifugal blower, the air sucked from the suction port passes through a grill, a pre-filter, a deodorizing filter, and passes through a bell mouth and a centrifugal blower. And is blown out from the outlet through a dust collecting filter.
[0007]
Further, in the above, it is preferable that the dust collecting filter has a square shape.
Further, in the above-described apparatus, it is preferable that each of the dust collecting filters has a plate shape and is arranged in a square shape on the outer periphery of the centrifugal blower.
Further, in the above-mentioned filter, it is preferable that the outermost diameter of the dust collecting filter is smaller than that of the suction port, and the filter is removable from the suction port.
Furthermore, in the present invention, a centrifugal blower is disposed at a substantially central portion in a housing, and a suction port is provided at a center of a lower surface of the housing, and an air purifier having a blowout port on an outer peripheral portion of the suction port is provided on a suction port side. Provided, and a dust collecting filter arranged between the outer periphery of the centrifugal blower and the outlet, and air sucked from the suction port is filtered through the bell mouth and the centrifugal blower. 4 through the outlet.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of an air purifier embedded in a ceiling, and FIG. 2 is a bottom view of the panel 5 excluding a suction grill 8, a pre-filter 6, and a deodorizing filter 7 provided at a suction port 5a. Inside the housing 1, a fan motor 3 is provided at a substantially central portion of the housing 1, a centrifugal blower 2 is provided on a rotation shaft of the fan motor 3, and a wind generated by the rotation of the centrifugal blower 2 is separated into an inlet side and an outlet side. A dust collecting filter 4 for collecting fine dust is provided on the outer peripheral side of the centrifugal blower 2 with a bell mouth 9. The dust collecting filter 4 is, for example, a quasi-HEPA class or higher filter having a performance of 95% or more of dust collecting efficiency.
[0009]
Further, on the lower surface of the housing 1, a grill 8 which can be detached from a central suction port 5a, that is, is detachable, and a panel 5 having an air outlet 5b on the outer periphery of the suction port 5a are arranged. A pre-filter 6 for collecting relatively large dust and a deodorizing filter 7 for removing odor are attached to an upper portion of a grill 8 provided at a suction port 5a of the panel 5.
The air sucked in from the suction port 5a passes through the grill 8, the pre-filter 6, and the deodorizing filter 7 to collect or deodorize relatively large dust, passes through the bell mouth 9, passes through the centrifugal blower 2, and passes through the centrifugal blower. The fine dust that cannot be collected by the pre-filter 6 is collected by passing through the dust-collecting filter 4 arranged on the outer peripheral side of 2, and is blown out as clean air from the outlet 5b of the panel 5. You.
[0010]
As described above, since the filter 4 having high dust collection efficiency is arranged in a square shape on the outer peripheral side of the centrifugal blower 2, the area through which air can pass can be increased as compared with the case where the filter 4 is provided at the suction port 5a. Can be. Therefore, it is possible to reduce the pressure loss when compared at the same air volume. For example, when the suction port 5a is 500 mm × 500 mm, if the width of the filter 4 is equal to that of the suction port 5a, the height H of the filter 4 is set to 250 mm. Double area can be secured. As a result, when compared at the same air volume, the wind speed passing through the filter 4 having high dust collection efficiency can be reduced, the pressure loss can be reduced, and the noise can be reduced.
[0011]
FIG. 3 shows another embodiment, in which the dust collecting filter 4 arranged in a square shape on the outer peripheral side of the centrifugal blower 2 has a size such that it is cylindrical and inside the outlet 5b. Thus, the shape of the dust collecting filter 4 is simplified, the number of parts is reduced, and the production becomes easy. However, the area through which the wind passes can be larger in the B-shaped dust collection filter 4.
[0012]
FIG. 4 shows still another embodiment in which a dust collecting filter 4 having a rectangular shape is separated for each surface, that is, a dust collecting filter 4 having a plate shape is provided on the outer periphery of the centrifugal blower 2. It is arranged in the shape of. As a result, as shown in FIG. 5, by removing the grill 8, the pre-filter 6, and the deodorizing filter 7 provided at the separable suction port 5a provided at the center of the panel 5, the dust collecting filter 4 is attached to the panel 5. Can be removed without removing it. Therefore, maintenance work becomes easy.
[0013]
Further, as shown in FIG. 6 (in a state in which the dust collecting filter 4 is stored) and in FIG. 7 (in a state in which the dust collecting filter 4 is removed), the width of the dust collecting filter 4 provided on the outer peripheral side of the centrifugal blower 2 is shown. By making W1 smaller than the width W of the suction port 5a, the dust collecting filter 4 can be taken out without removing the panel 5 without removing the panel 5 by removing the grill 8, the pre-filter 6, and the deodorizing filter 7. It becomes possible. Maintenance work such as cleaning of the dust collecting filter 4 becomes easy.
[0014]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain an air purifier having a large air flow, high dust collection efficiency, low noise, and improved energy saving.
[Brief description of the drawings]
FIG. 1 is a sectional view showing an air purifier according to an embodiment of the present invention.
FIG. 2 is a plan view of FIG. 1 as viewed from below.
FIG. 3 is a plan view showing another embodiment.
FIG. 4 is a perspective view showing a dust collecting filter separating structure in one embodiment.
FIG. 5 is a cross-sectional view showing a state in which a dust collecting filter is removed in one embodiment.
FIG. 6 is a cross-sectional view illustrating a relationship between a width W1 of a dust collection filter and a width W of a suction port in another embodiment.
FIG. 7 is a cross-sectional view showing a state where a dust collecting filter is removed in another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Housing, 2 ... Centrifugal blower, 3 ... Fan motor, 4 ... Dust collection filter, 5 ... Panel, 5a ... Inlet, 5b ... Outlet, 6 ... Pre-filter, 7 ... Deodorizing filter, 8 ... Grill, 9 ... Bellmouth.

Claims (5)

筐体内の略中央部にファンモータ及び遠心送風機を配置し、前記筐体の下面の中央に吸込み口、該吸込み口の外周部に吹出し口を有するパネルが配置され、前記吸込み口に取り外し可能とされたグリルが設けられた空気清浄機において、
前記遠心送風機の回転により生じる風を吸込み口側、吹出し口側に分離するベルマウスと、前記グリルの上部に設けられたプレフィルタ及び脱臭フィルタと、前記遠心送風機の外周側に配置された集塵用フィルタと、を備え、
前記吸込み口から吸込まれた空気は、前記グリル、前記プレフィルタ、前記脱臭フィルタを通過し、前記ベルマウス、前記遠心送風機を介して前記集塵用フィルタを通って前記吹出し口から吹出されることを特徴とする空気清浄機。
A fan motor and a centrifugal blower are arranged at a substantially central portion in the housing, a suction port is provided at the center of the lower surface of the housing, and a panel having a blowout port is provided at an outer peripheral portion of the suction port. Air cleaner provided with a grill
A bell mouth that separates the wind generated by the rotation of the centrifugal blower into an inlet side and an outlet side; a pre-filter and a deodorizing filter provided on an upper portion of the grill; and a dust collector disposed on an outer peripheral side of the centrifugal blower. And a filter for
The air sucked from the suction port passes through the grill, the pre-filter, and the deodorizing filter, and is blown from the outlet through the bell mouth and the dust collecting filter through the centrifugal blower. An air purifier characterized by the following.
請求項1に記載のものにおいて、前記集塵用フィルタがロの字形であることを特徴とする空気清浄機。The air purifier according to claim 1, wherein the dust collecting filter has a square shape. 請求項1に記載のものにおいて、集塵用フィルタはそれぞれが板状とされ、前記遠心送風機の外周にロの字形に配置されたことを特徴とする空気清浄機。2. The air purifier according to claim 1, wherein each of the dust collecting filters has a plate shape and is arranged in a square shape on the outer periphery of the centrifugal blower. 請求項1に記載のものにおいて、前記集塵用フィルタは、その最外径が前記吸込み口より小さくされ、前記吸込み口より取り外し可能とされたことを特徴とする空気清浄機。2. The air purifier according to claim 1, wherein an outermost diameter of the dust collecting filter is smaller than that of the suction port, and the dust collecting filter is removable from the suction port. 筐体内の略中央部に遠心送風機を配置し、前記筐体の下面の中央に吸込み口、該吸込み口の外周部に吹出し口を有する空気清浄機において、前記吸込み口側に設けられたベルマウスと、前記遠心送風機の外周と前記吹出し口との間に配置された集塵用フィルタと、を設け、前記吸込み口から吸込まれた空気は、前記ベルマウス及び前記遠心送風機を介して前記集塵用フィルタを通って前記吹出し口から吹出されることを特徴とする空気清浄機。A bell mouth provided on the suction port side in an air purifier having a centrifugal blower disposed at a substantially central portion in a housing, a suction port in the center of a lower surface of the housing, and a blowout port on an outer peripheral portion of the suction port. And a dust-collecting filter disposed between the outer periphery of the centrifugal blower and the outlet, and the air sucked from the suction port is provided with the dust-collecting device via the bell mouth and the centrifugal blower. The air purifier is blown out from the outlet through a filter for air.
JP2002331513A 2002-11-15 2002-11-15 Air cleaner Pending JP2004160409A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019120486A (en) * 2017-12-27 2019-07-22 ブルックバウアー ヴィルヘルム Exhaust fan device for exhausting cooking steam downward
JP2023066158A (en) * 2021-10-28 2023-05-15 ダイキン工業株式会社 Ceiling installation type air conditioner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019120486A (en) * 2017-12-27 2019-07-22 ブルックバウアー ヴィルヘルム Exhaust fan device for exhausting cooking steam downward
US11193675B2 (en) * 2017-12-27 2021-12-07 Wilhelm Bruckbauer Extractor fan apparatus for extracting cooking vapours downwards
JP7441604B2 (en) 2017-12-27 2024-03-01 ブルックバウアー ヴィルヘルム Exhaust fan device for discharging cooking steam downwards and hob system for cooking
JP2023066158A (en) * 2021-10-28 2023-05-15 ダイキン工業株式会社 Ceiling installation type air conditioner

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