JP2007105645A - Pre-filter for air conditioner, and air conditioner using it - Google Patents

Pre-filter for air conditioner, and air conditioner using it Download PDF

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Publication number
JP2007105645A
JP2007105645A JP2005299546A JP2005299546A JP2007105645A JP 2007105645 A JP2007105645 A JP 2007105645A JP 2005299546 A JP2005299546 A JP 2005299546A JP 2005299546 A JP2005299546 A JP 2005299546A JP 2007105645 A JP2007105645 A JP 2007105645A
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air conditioner
resin fiber
filter
air
dust
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JP4636990B2 (en
Inventor
Masanori Akimoto
正徳 秋元
Takeshi Tsurumi
剛 鶴見
Atsuko Funayama
敦子 船山
Atsushi Otsuka
厚 大塚
Tsutomu Imoto
勉 井本
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Hitachi Appliances Inc
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Hitachi Appliances Inc
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Priority to JP2005299546A priority Critical patent/JP4636990B2/en
Priority to CNB2006100022701A priority patent/CN100455926C/en
Priority to KR1020060038435A priority patent/KR100842975B1/en
Publication of JP2007105645A publication Critical patent/JP2007105645A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • 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
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Materials (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pre-filter capable of easily peeling off dust or contaminant attached to it, preventing intrusion of contaminant, having a high quality feeling by metallic film and antibacterial action, and preventing damage at the time of attachment and detachment. <P>SOLUTION: In this pre-filter comprising resin fiber mesh such as PP, PET and ABS collecting dust in indoor air, and a resin frame supporting the resin fiber mesh, the surfaces of the resin fiber mesh are subjected to metallic film treatment or sputtering of stainless steel. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、空気を吸引する際に含まれる塵埃を捕集する集塵用プレフィルターを有する空気調和機に関する。   The present invention relates to an air conditioner having a dust pre-filter that collects dust contained when air is sucked.

空気調和機の室内機には室内空気を調和するために室内熱交換器が設けられている。室内熱交換器は、アルミニウム製の複数枚のフィンと、これらフィンにあけられた穴に挿入された銅製の冷媒管により形成されている。フィンとフィンの間隔は微小隙間となっており、この間を室内の空気流が通風することで冷媒と空気との間で熱交換が行われる。この室内熱交換器の空気流下流には送風用の貫流ファンが設けられている。貫流ファンが回転すると室内空気が室内機に設けられた空気吸込み口から熱交換器、貫流ファンを介して空気吹出し口から吹出される。   The indoor unit of the air conditioner is provided with an indoor heat exchanger in order to harmonize room air. The indoor heat exchanger is formed by a plurality of aluminum fins and a copper refrigerant pipe inserted into holes formed in the fins. The space between the fins is a minute gap, and heat exchange is performed between the refrigerant and the air by the indoor air flow passing through the gap. A cross-flow fan for blowing air is provided downstream of the air flow of the indoor heat exchanger. When the once-through fan rotates, room air is blown out from the air outlet through the heat exchanger and the once-through fan from the air inlet provided in the indoor unit.

ところで、塵埃が含まれる室内空気を直接熱交換器に導入すると、フィンの先端やフィン間に塵埃が付着して空気の流れを阻害してしまう。このため、熱交換器の上流側には、空気中の塵埃を捕集するためにフィルター（プレフィルター）が設けられている。一般的なフィルターは、樹脂繊維網と樹脂繊維網を支える樹脂枠で構成されている。   By the way, when indoor air containing dust is directly introduced into the heat exchanger, the dust adheres between the tips of the fins and between the fins and obstructs the air flow. For this reason, a filter (prefilter) is provided on the upstream side of the heat exchanger in order to collect dust in the air. A general filter is composed of a resin fiber network and a resin frame that supports the resin fiber network.

ところが、このフィルターに付着した塵埃はフィルターの網目に絡まり除去するために手間がかかるという問題があった。また、特に油分を含んだ汚れは落としにくいといった問題がある。   However, there is a problem that it takes time to remove the dust adhering to the filter entangled with the filter mesh. Also, there is a problem that dirt containing oil is difficult to remove.

特許文献１には、線材間に形成した隙間を介して空気等を流通せしめる網戸やエアコンのフィルターに付着した異臭成分や汚れを分解するために、酸化チタンを線材の表面に形成することが記載されている。ただし、線材自体が酸化チタンの光触媒作用により劣化してしまうため、金属網の表面に酸化チタンをスパッタリングによって酸化チタン膜を形成している。   Patent Document 1 describes that titanium oxide is formed on the surface of a wire in order to decompose off-odor components and dirt adhering to a screen door or an air conditioner filter that circulates air or the like through a gap formed between the wires. Has been. However, since the wire itself deteriorates due to the photocatalytic action of titanium oxide, a titanium oxide film is formed by sputtering titanium oxide on the surface of the metal net.

一方、掃除機の吸気フィルターに付着した繊維質の塵埃の剥離性を向上させる技術が特許文献２及び特許文献３に開示されている。すなわち、特許文献２には、掃除機の吸気フィルターの樹脂繊維の表面に真空中でステンレス鋼をスパッタリングさせることで、吸気フィルターに付着した塵埃の剥離性を向上させることが記載されている。また、特許文献３には、アルミニウムをスパッタリングした紡績布を微塵フィルターの下流側に配置させることが記載されている。   On the other hand, Patent Literature 2 and Patent Literature 3 disclose techniques for improving the releasability of fibrous dust attached to an intake filter of a vacuum cleaner. That is, Patent Document 2 describes that stainless steel is sputtered in vacuum on the surface of the resin fiber of an intake filter of a vacuum cleaner, thereby improving the detachability of dust attached to the intake filter. Patent Document 3 describes that a sputtered aluminum sputtered cloth is disposed on the downstream side of the fine dust filter.

なお、特許文献２には、吸気フィルターのメッシュサイズ（１インチ四方におけるメッシュの数）を２００〜３５０とし、フィルター全面積におけるメッシュの開口率を２０〜５０％とすることで、微細な細塵が吸気フィルターから電動送風機側へ侵入することを防ぐことが記載されている。   In Patent Document 2, fine mesh dust is set by setting the mesh size of the intake filter (the number of meshes in 1 inch square) to 200 to 350 and the mesh opening ratio in the entire filter area to 20 to 50%. Is described to prevent the intrusion from entering the electric blower side from the intake filter.

特開平9-75633号公報JP-A-9-75633 特開2003-325398号公報Japanese Patent Laid-Open No. 2003-325398 特許03587192号公報Japanese Patent No. 03587192

上記特許文献１においては、網を形成する樹脂製の線材に直接酸化チタンをスパッタリングすると光触媒作用により線材が劣化してしまうため、線材を金属製としなければならず、高価になるという問題がある。   In Patent Document 1, when titanium oxide is directly sputtered onto a resin wire that forms a net, the wire is deteriorated by photocatalysis, so that the wire must be made of metal and is expensive. .

また、上記特許文献２には、上記したように、フィルターの１インチ四方におけるメッシュの数であるメッシュサイズを２００〜３００とし、かつフィルター全面積におけるメッシュの開口率を２０〜５０％と設定することで微細な細塵が電動送風機へ進入するのを防ぐフィルターにスパッタリングを施している。   Moreover, in the said patent document 2, as above-mentioned, the mesh size which is the number of the meshes in 1 inch square of a filter is set to 200-300, and the aperture ratio of the mesh in the whole filter area is set to 20-50%. Sputtering is applied to the filter that prevents fine fine dust from entering the electric blower.

これは、特許文献２におけるフィルターは掃除機用であり、このフィルタの特性として、吸い口、ホースを介して吸込まれた塵埃をしっかりと捕集しなければならない。このようなフィルターをそのまま空気調和機用のプレフィルターとして搭載すると空気調和機の冷凍サイクルの能力が低下するという問題があった。   This is because the filter in Patent Document 2 is for a vacuum cleaner, and as a characteristic of the filter, dust sucked in through a suction port and a hose must be collected firmly. If such a filter is mounted as it is as a pre-filter for an air conditioner, there is a problem that the capacity of the refrigeration cycle of the air conditioner decreases.

一方、空気調和機の室内機用のプレフィルターは、室内機の前面パネルを開けると露出する位置に設けられているが、金属を網にスパッタリングしているにもかかわらず、金属光沢がでずデザイン性が悪いという問題があった。   On the other hand, the pre-filter for indoor unit of air conditioner is provided at a position where it is exposed when the front panel of the indoor unit is opened. There was a problem of poor design.

本発明の目的は、付着した埃、汚れが剥離しやすい空気調和機用のフィルターを提供することにある。   An object of the present invention is to provide a filter for an air conditioner in which attached dust and dirt are easily peeled off.

本発明の第２の目的は、付着した埃、汚れが剥離しやすく、空気調和機の冷凍サイクル能力を低下を抑制し、かつデザイン面でも優れた空気調和機用のフィルターを提供することにある。本発明の目的は、付着した埃、汚れが剥離しやすい空気調和機用のフィルターを提供することにある。   The second object of the present invention is to provide a filter for an air conditioner that is easy to peel off attached dust and dirt, suppresses the refrigeration cycle performance of the air conditioner, and is excellent in design. . An object of the present invention is to provide a filter for an air conditioner in which attached dust and dirt are easily peeled off.

本発明の第３の目的は、プレフィルターに付着した埃、汚れが剥離しやすい空気調和機を提供することにある。   The third object of the present invention is to provide an air conditioner in which dust and dirt adhering to a prefilter are easily peeled off.

本発明の第４の目的は、付着した埃、汚れが剥離しやすく、空気調和機の冷凍サイクル能力を低下を抑制し、かつデザイン面でも優れたフィルターを搭載した空気調和機を提供することにある。   A fourth object of the present invention is to provide an air conditioner equipped with a filter that is easy to peel off attached dust and dirt, suppresses the refrigeration cycle ability of the air conditioner from being reduced, and is excellent in design. is there.

上記目的は、室内空気の塵埃を捕集する樹脂繊維網と、この樹脂繊維網を支持固定する樹脂枠とを備えた空気調和機用プレフィルターにおいて、前記樹脂繊維網の両面の表面または片面の表面にステンレスをスパッタリングによって付着させた空気調和機用プレフィルターとすることにより達成される。   The object is to provide a pre-filter for an air conditioner comprising a resin fiber net that collects dust from indoor air and a resin frame that supports and fixes the resin fiber net. This is achieved by forming a prefilter for an air conditioner having stainless steel deposited on the surface by sputtering.

また、上記第２の目的は、室内空気の塵埃を捕集する樹脂繊維網と、この樹脂繊維網を支持固定する樹脂枠とを備えた空気調和機用プレフィルターにおいて、前記樹脂繊維網の両面の表面または片面の表面にステンレスをスパッタリングによって付着させ、前記樹脂繊維網の開口率を５５％〜６０％とし、前記樹脂繊維網を構成する線材の線径を１５０μｍ〜２２０μｍとした空気調和機用プレフィルターとすることにより達成される。   The second object of the present invention is to provide a prefilter for an air conditioner comprising a resin fiber network that collects indoor air dust and a resin frame that supports and fixes the resin fiber network. For air conditioners, stainless steel is attached to the surface or the surface of one side by sputtering, the opening ratio of the resin fiber network is 55% to 60%, and the wire diameter of the wire constituting the resin fiber network is 150 μm to 220 μm This is achieved by using a prefilter.

また、上記第３の目的は、上部に吸込み口下部に吹出し口を有する室内機と、この室内機内に設けられた室内熱交換器と、この室内熱交換器と前記空気吹出し口との間に設けられたファンと、前記室内熱交換器の空気流上流に設けられたプレフィルターとを備えた空気調和機において、前記プレフィルターは樹脂繊維網の両面の表面または片面の表面にステンレスをスパッタリングによって付着させたものである空気調和機とすることにより達成される。   The third object is to provide an indoor unit having an air outlet at the upper part of the suction port, an indoor heat exchanger provided in the indoor unit, and between the indoor heat exchanger and the air outlet. In an air conditioner comprising a provided fan and a prefilter provided upstream of the air flow of the indoor heat exchanger, the prefilter is formed by sputtering stainless steel on both surfaces or one surface of a resin fiber network. This is achieved by using an air conditioner that is attached.

また上記第４の目的は、上部に吸込み口下部に吹出し口を有する室内機と、この室内機内に設けられた室内熱交換器と、この室内熱交換器と前記空気吹出し口との間に設けられたファンと、前記室内熱交換器の空気流上流に設けられたプレフィルターとを備えた空気調和機において、前記プレフィルターは、樹脂繊維網の両面の表面または片面の表面にステンレスをスパッタリングによって付着させ、前記樹脂繊維網の開口率を５５％〜６０％とし、前記樹脂繊維網を構成する線材の線径を１５０μｍ〜２２０μｍとしたものである空気調和機とすることにより達成される。   Further, the fourth object is to provide an indoor unit having an air outlet at the upper part, an air outlet at the lower part, an indoor heat exchanger provided in the indoor unit, and between the indoor heat exchanger and the air outlet. In the air conditioner comprising a fan and a prefilter provided upstream of the air flow of the indoor heat exchanger, the prefilter is formed by sputtering stainless steel on both surfaces or one surface of the resin fiber network. This is achieved by making it an air conditioner having an opening ratio of 55% to 60% of the resin fiber network and a wire diameter of the resin fiber network of 150 μm to 220 μm.

以上本発明によれば、付着した埃、汚れが剥離しやすい空気調和機用のフィルターを提供することができる。   As described above, according to the present invention, it is possible to provide a filter for an air conditioner that easily removes attached dust and dirt.

また本発明によれば、付着した埃、汚れが剥離しやすく、空気調和機の冷凍サイクル能力を低下を抑制し、かつデザイン面でも優れた空気調和機用のフィルターを提供することにある。本発明の目的は、付着した埃、汚れが剥離しやすい空気調和機用のフィルターを提供することができる。   Another object of the present invention is to provide a filter for an air conditioner that easily removes attached dust and dirt, suppresses a decrease in the refrigeration cycle performance of the air conditioner, and is excellent in design. An object of the present invention is to provide a filter for an air conditioner that easily removes attached dust and dirt.

さらに本発明によれば、プレフィルターに付着した埃、汚れが剥離しやすい空気調和機を提供することができる。   Furthermore, according to the present invention, it is possible to provide an air conditioner in which dust and dirt attached to the prefilter are easily peeled off.

さらに本発明によれば、付着した埃、汚れが剥離しやすく、空気調和機の冷凍サイクル能力を低下を抑制し、かつデザイン面でも優れたフィルターを搭載した空気調和機を提供することができる。   Furthermore, according to the present invention, it is possible to provide an air conditioner equipped with a filter that is easy to peel off attached dust and dirt, suppresses a decrease in the refrigeration cycle capability of the air conditioner, and is excellent in design.

以下、本発明の一実施例を図を用いて説明する。まず、本実施例に係るプレフィルターを適用した空気調和機を図１を参照しながら説明する。図１は、本実施例のプレフィルターを適用した空気調和機の室内ユニットの縦断面図である。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, an air conditioner to which a prefilter according to the present embodiment is applied will be described with reference to FIG. FIG. 1 is a longitudinal sectional view of an indoor unit of an air conditioner to which the prefilter of the present embodiment is applied.

空気調和機の室内ユニット１０は、筐体１、熱交換器５及び通風ファン６を主要構成要素として構成されている。   An indoor unit 10 of an air conditioner is configured with a housing 1, a heat exchanger 5, and a ventilation fan 6 as main components.

筐体１は、化粧枠２と台枠３とから構成され、上部に吸込み口１ａ、下部に吹出し口１ｂを有している。通風ファン６（貫流ファン）は筐体１内の中央部に配置され、室内空気の気流が白抜き矢印で示すように、室内空気を吸込み口１ａから吸込んで吹出し口１ｂから吹出すように動作する。熱交換器５は、室内空気と熱交換するように通風ファン６の吸込み側に配置されている。この熱交換器５は、室内空気を冷却または加熱するための冷媒が内部を流れる。熱交換器５は概略逆Ｖ字状に形成され、熱交換器５の前後両下端部には露受け皿４ａ、４ｂが設置されている。   The housing 1 is composed of a decorative frame 2 and a base frame 3, and has a suction port 1a at the top and a blowout port 1b at the bottom. The ventilation fan 6 (cross-flow fan) is disposed in the center of the housing 1 and operates so that the indoor air is sucked from the air inlet 1a and blown out from the air outlet 1b as indicated by the white arrow. To do. The heat exchanger 5 is disposed on the suction side of the ventilation fan 6 so as to exchange heat with room air. In the heat exchanger 5, a refrigerant for cooling or heating indoor air flows inside. The heat exchanger 5 is formed in a substantially inverted V shape, and dew trays 4 a and 4 b are installed at the front and rear lower ends of the heat exchanger 5.

エアフィルター７及びプレフィルター８は、室内空気の除塵や空気清浄を行うためのものであり熱交換器５の吸込み側に設置されている。空気調和された室内空気は吹出し口１ｂから室内へ吹出される。風向羽根９は冷房時と暖房時でその吹出し方向を変更するものである。空気調和機の冷房運転時には、室内空気は、吸込み口１ａより筐体１内に吸込まれ、プレフィルター８及びエアフィルター７で除塵及び空気清浄され、さらには熱交換器５で冷却された後、通風ファン６から吹出し口１ｂを通して室内へ吹出される。   The air filter 7 and the prefilter 8 are for removing dust from the room air and cleaning the air, and are installed on the suction side of the heat exchanger 5. Air conditioned room air is blown out into the room from the outlet 1b. The wind direction blade | wing 9 changes the blowing direction at the time of air_conditioning | cooling and heating. During the cooling operation of the air conditioner, the room air is sucked into the housing 1 from the suction port 1a, is dust-removed and air-cleaned by the prefilter 8 and the air filter 7, and further cooled by the heat exchanger 5, The air is blown into the room from the ventilation fan 6 through the air outlet 1b.

本実施例に係るプレフィルター８は、空気調和機の構造上、ラウンドしている空気調和機正面の吸込み口全面を塞ぐように取り付けてある。埃が多く付着すると空気の流れの抵抗となり熱交換器の熱交換性能が低下するため冷凍サイクルの能力が低下してしまう。このため、使用者は定期的にプレフィルター８を洗浄する必要がある。このプレフィルター８の洗浄のため使用者はプレフィルター８の着脱を行う。この際、空気調和機室内ユニット１０の正面はラウンドしているためプレフィルターを室内ユニット１０に設けられた取付ガイドを滑らせるようにして着脱する。従来の樹脂が露出したプレフィルター８の表面はガイドと接触するため傷つきやすいという問題があった。   The prefilter 8 according to the present embodiment is attached so as to block the entire suction port in front of the air conditioner that is rounded due to the structure of the air conditioner. If a large amount of dust adheres, it becomes a resistance to the air flow and the heat exchange performance of the heat exchanger is lowered, so that the capacity of the refrigeration cycle is lowered. For this reason, the user needs to clean the pre-filter 8 regularly. The user attaches and detaches the prefilter 8 for cleaning the prefilter 8. At this time, since the front surface of the air conditioner indoor unit 10 is round, the prefilter is attached and detached by sliding an attachment guide provided in the indoor unit 10. Since the surface of the pre-filter 8 where the conventional resin is exposed is in contact with the guide, there is a problem that it is easily damaged.

従来のプレフィルター８の清掃は、掃除機等を使用して埃を除去した後、スポンジややわらかいブラシなどに洗剤等を付け、吸引しきれなかった埃や汚れを洗い落としていた。しかし、線材が樹脂繊維でできた網は、線径が細く、こすった際に傷つきやすい。また、従来のプレフィルターの網は、ＰＰ、ＰＥＴ、ＡＢＳ等樹脂が露出した表面である。このフィルターを構成する網の成型方法は、溶解した樹脂をノズルから射出し、冷却硬化する手法である。このため、樹脂が露出した網表面は、平滑に見えても細孔がたくさんある。これらの細孔に空気中を浮遊する粉塵やタバコの煙等が付着し、細孔に入り込むため、プレフィルターを定期的に洗浄しても細孔に入ってしまった粉塵等の汚れは容易に落とすことができない。また、近年、清潔志向が高まる中、ハンドモップなど手軽に掃除できるツールが発売され、ハンドモップを使って汚れをサッと拭き取りたいというニーズが出てきた。また、自動でプレフィルターについた汚れを吸い取るお掃除機構が開発されてきている。このお掃除機構の吸引力は床面を掃除する掃除機と比較して格段に弱い。このような弱い吸引力でもプレフィルター８についた汚れを剥離させる必要がある。また、お掃除機構を使用しなくとも手間をかけずに汚れを落とすことができるプレフィルター８が求められている。   In the conventional pre-filter 8, after removing dust using a vacuum cleaner or the like, a detergent or the like is attached to a sponge or a soft brush to wash away dust and dirt that could not be sucked. However, a net made of resin fibers is a thin wire and is easily damaged when rubbed. Further, the conventional prefilter net is a surface on which a resin such as PP, PET, ABS or the like is exposed. The method for forming a mesh constituting the filter is a method in which a melted resin is injected from a nozzle and cooled and cured. For this reason, the net surface on which the resin is exposed has many pores even if it looks smooth. Dust or cigarette smoke floating in the air adheres to these pores and enters the pores, so even if the prefilter is regularly cleaned, dirt such as dust that has entered the pores can be easily removed. I can't drop it. In recent years, with the increasing awareness of cleanliness, tools such as hand mops that can be easily cleaned have been released, and there has been a need to use hand mops to wipe off dirt. In addition, a cleaning mechanism has been developed that automatically sucks dirt on the prefilter. The suction force of this cleaning mechanism is much weaker than a vacuum cleaner that cleans the floor. It is necessary to peel off the dirt on the prefilter 8 even with such a weak suction force. There is also a need for a pre-filter 8 that can remove dirt without using a cleaning mechanism.

また、このような清潔志向に加え、安全志向も高まっており、その中でも抗菌機能をもつ抗菌加工製品の市場は年々拡大している。近年では住宅の高気密化に伴い湿気の増大や換気不足などの原因によって、細菌が繁殖しやすい生活環境となってきている。快適で衛生的な生活環境を実現するため、空気調和機による抗菌ニーズも増加している。   In addition to such cleanliness, safety is also increasing, and among them, the market for antibacterial processed products with antibacterial functions is expanding year by year. In recent years, with an increase in the airtightness of houses, it has become a living environment where bacteria can easily propagate due to increased humidity and insufficient ventilation. In order to realize a comfortable and hygienic living environment, antibacterial needs for air conditioners are also increasing.

さらに、プレフィルター８は、空気調和機の室内機１０の前部全面に配されており、比較的目に付きやすく、空気調和機の意匠性、高級感を左右する部品の一つである。高級感を持たせたフィルターを採用することは空気調和機のデザイン性、高級感を向上させるものとなる。   Further, the pre-filter 8 is disposed on the entire front surface of the indoor unit 10 of the air conditioner, is relatively easy to see, and is one of the parts that influence the design and high-quality feeling of the air conditioner. Adopting a high-quality filter improves the design and luxury of the air conditioner.

本実施例のプレフィルター８の構成は、図２に示す通り、樹脂繊維網１１と樹脂繊維網１１を支持固定するための樹脂枠１２で構成される。従来のプレフィルターの樹脂繊維網１１は、ＰＰ、ＰＥＴ、ＡＢＳ等樹脂が露出した表面であり、繊維の成型方法が溶解した樹脂をノズルから射出し、冷却され硬化する手法のため、樹脂が露出した表面は、平滑に見えても細孔がたくさんある。これらの穴に空気中を浮遊する粉塵やタバコの煙等が付着し細孔に入り込むため、プレフィルター８を定期的に洗浄しても細孔に入ってしまった粉塵等の汚れは落とすことができない。   As shown in FIG. 2, the configuration of the pre-filter 8 of this embodiment includes a resin fiber network 11 and a resin frame 12 for supporting and fixing the resin fiber network 11. The resin fiber network 11 of the conventional prefilter is a surface on which a resin such as PP, PET, ABS or the like is exposed, and the resin is exposed because the resin molding method injects the resin dissolved from the nozzle and cools and cures. The finished surface has many pores even if it looks smooth. Since dust or cigarette smoke floating in the air adheres to these holes and enters the pores, dirt such as dust that has entered the pores may be removed even if the prefilter 8 is periodically cleaned. Can not.

そこで、図３に示す樹脂繊維網１１の断面図のとおり、真空中にイオン化したアルゴンガスなどの不活性ガスをステンレスなどの金属に衝突させ、はじき飛ばされた金属粒子を樹脂繊維網１１に成膜させるスパッタリング加工により、樹脂繊維網１１表面にステンレスなどの金属皮膜１３を形成する。これにより樹脂繊維網１１表面の細孔を埋め、表面をナノサイズで平滑化することで、埃、汚れが剥離しやすく、汚れの浸透を防ぐことができる。   Therefore, as shown in the cross-sectional view of the resin fiber network 11 shown in FIG. 3, an inert gas such as argon gas ionized in a vacuum is collided with a metal such as stainless steel, and the repelled metal particles are formed on the resin fiber network 11. A metal film 13 such as stainless steel is formed on the surface of the resin fiber network 11 by sputtering. Thereby, the pores on the surface of the resin fiber network 11 are filled and the surface is smoothed with a nano-size, whereby dust and dirt can be easily peeled off, and the penetration of dirt can be prevented.

ここで、スパッタリング加工を施す面は、室内空気の吸気気流に対し、上流、下流の両面となる樹脂繊維網１１表面全体に施すことで、より埃の剥離性向上、汚れの浸透性を抑えることができるが、室内空気の吸気気流に対し上流側への加工のみでも充分に効果を得ることができ、低コスト化することも可能となる。   Here, the surface to be sputtered is applied to the entire surface of the resin fiber network 11 on both the upstream and downstream sides of the intake airflow of the room air, thereby further improving the dust releasability and suppressing the dirt permeability. However, a sufficient effect can be obtained only by processing upstream of the intake airflow of the room air, and the cost can be reduced.

さらに図４のように、樹脂繊維網１１に熱をかけながらローラでつぶすカレンダーロール加工を施すことにより、縦繊維１４と横繊維１５の交差部分に平面部を形成することができ、樹脂繊維網１１をさらに平滑にすることで埃の剥離をしやすくさせることができる。   Further, as shown in FIG. 4, by applying a calender roll process in which the resin fiber net 11 is crushed with a roller while applying heat, a plane portion can be formed at the intersection of the vertical fibers 14 and the horizontal fibers 15. By further smoothing 11, dust can be easily peeled off.

また、スパッタリング加工により金属皮膜１３を形成した金属感により、プレフィルター８の意匠性を向上させ、空気調和機の高級感を向上させることが可能となる。   Moreover, the design feeling of the pre-filter 8 can be improved by the metal feeling in which the metal film 13 is formed by sputtering, and the high-quality feeling of the air conditioner can be improved.

しかし、この金属感、特に光沢度は、条件によって現れたり現れなかったりすることが種々の実験によって判った。ここで、図５に樹脂繊維網１１にステンレス材を金属皮膜１３として、スパッタリング加工を施した時の樹脂繊維網１１の線径とスパッタリング面表面光沢度の関係を示す。この光沢度の測定は光沢度計を用いた。線径を太くすればスパッタリングされる面が増大するため光沢度が上がる。プレフィルター８の意匠性、高級感を向上させるための金属感を与えるには光沢度１０以上が必要であり、線径は１５０μｍ以上でなければならない。   However, it has been found by various experiments that this metallic feeling, particularly glossiness, appears or does not appear depending on conditions. Here, FIG. 5 shows the relationship between the wire diameter of the resin fiber network 11 and the surface glossiness of the sputtering surface when the stainless steel material is applied to the resin fiber network 11 as a metal film 13 and the sputtering process is performed. The glossiness was measured using a glossmeter. If the wire diameter is increased, the surface to be sputtered increases and the glossiness increases. Glossiness of 10 or more is required to give the prefilter 8 a metallic feeling for improving the design and luxury, and the wire diameter must be 150 μm or more.

また、樹脂繊維網１１全面積におけるメッシュの開口率は空気調和機の圧力損失を確保するためには、５５％〜６０％としなければならない。これは、掃除機が微細な埃をも吸込まなければならないのに対して、空気調和機用のプレフィルター８は、室内熱交換器５を目詰まりさせる比較的大きな埃を取り除くことを主目的としているためである。従って、室内熱交換器５の能力を落とすような開口率には設定することができない。開口率が決まっている場合、線材の線径を太くするとオープニング（樹脂繊維網１１の糸と糸の距離、網目の大きさ）が広くなり、大きな埃が通過してしまうこととなる。この開口率６０％における線径とオープニングの関係を図６に示す。   Moreover, in order to ensure the pressure loss of an air conditioner, the opening ratio of the mesh in the entire area of the resin fiber network 11 must be 55% to 60%. The main purpose of this is to remove the relatively large dust that clogs the indoor heat exchanger 5 while the pre-filter 8 for the air conditioner needs to suck in fine dust. It is because it is doing. Therefore, it cannot be set to an aperture ratio that reduces the capacity of the indoor heat exchanger 5. When the aperture ratio is determined, if the wire diameter of the wire is increased, the opening (the distance between the yarns of the resin fiber network 11 and the size of the mesh) is widened, and large dust passes. FIG. 6 shows the relationship between the wire diameter and opening at the aperture ratio of 60%.

図５及び図６から次のことがわかる。線径を太くすれば金属感は向上するが、オープニングが大きくなり、大きな埃が通過してしまう。反対に線形を細くすればオープニングは小さくなるものの、今度は光沢度が低下して意匠性が悪くなる。   The following can be understood from FIGS. If the wire diameter is increased, the metal feeling is improved, but the opening is increased and large dust passes. On the contrary, if the alignment is made thinner, the opening will be reduced, but this time the glossiness will be lowered and the design will be worse.

例えば、線径が２３０μｍではプレフィルター８の表面の光沢度は良好であるが、オープニングが約８００μｍとなり塵埃の捕集効率が低下する。通常、空気清浄機は、電気集塵機もしくは帯電フィルターを備えており、５０μｍ以下の塵埃は、これらで除去することができる。このような電気集塵機若しくは帯電フィルターをエアフィルター７として室内機１０に取り付ければ５０μｍ以下の塵埃を除去することができる。   For example, when the wire diameter is 230 μm, the glossiness of the surface of the pre-filter 8 is good, but the opening is about 800 μm, and the dust collection efficiency is lowered. Usually, the air cleaner is provided with an electric dust collector or a charging filter, and dust of 50 μm or less can be removed by these. If such an electric dust collector or charging filter is attached to the indoor unit 10 as the air filter 7, dust of 50 μm or less can be removed.

一方、プレフィルター８の線径を２３０μｍに設定すると、５０μｍ〜８００μｍ以下の塵埃は、原理的にプレフィルター８のメッシュを通過してしまう。しかし、プレフィルター８には、８００μｍ以上の長繊維（糸くず）などが付着し、付着した糸くずに微細な塵埃もついて捕集することができるが、８００μｍ以上の塵埃を通過させることは好ましくない。これは、一般的に室内熱交換器５のフィン間の距離は１．２ｍｍ前後であり、８００μｍはフィン間の隙間の６５％よりも大きい６７％の寸法の塵埃となる。このように大きな埃が同時に２個フィン間を通過することは困難であり、熱交換器の目詰まりの原因となってしまう。そこで、本実施例では、線径の上限を２２０μｍとした。このときのオープニングの距離は７６６μｍであり、フィン間距離の６４％である。   On the other hand, when the wire diameter of the prefilter 8 is set to 230 μm, dust of 50 μm to 800 μm or less passes through the mesh of the prefilter 8 in principle. However, long fibers (lint) of 800 μm or more adhere to the prefilter 8 and can be collected with fine dust on the lint that has adhered, but it is preferable to allow dust of 800 μm or more to pass through. Absent. In general, the distance between the fins of the indoor heat exchanger 5 is around 1.2 mm, and 800 μm becomes dust having a size of 67%, which is larger than 65% of the gap between the fins. It is difficult for such large dust to pass between the two fins at the same time, which causes clogging of the heat exchanger. Therefore, in this embodiment, the upper limit of the wire diameter is 220 μm. The opening distance at this time is 766 μm, which is 64% of the distance between the fins.

これらのことから、線径１５０μｍ〜２２０μｍ、メッシュサイズを２４〜４０、開口率５５〜６０％とすることで、光沢度を良好に保持しつつ、大きな塵埃を通過させない、塵離れ汚れ落ちのよいプレフィルター８を提供することができる。   For these reasons, the wire diameter is 150 μm to 220 μm, the mesh size is 24 to 40, and the aperture ratio is 55 to 60%. A prefilter 8 can be provided.

なお、上記スパッタリング加工及びカレンダーロール加工は、樹脂繊維網１１の一般的な構造であるハニカム織り、平織りどちらに施してもよい。ただし、従来のプレフィルター８の清掃は、掃除機等を使用して埃を除去した後、スポンジややわらかいブラシなどに洗剤等を付け、吸引しきれなかった埃や汚れを洗い落としていた。前述の如く、近年、清潔志向が高まる中、ハンドモップなど手軽に掃除できるツールが発売され、ハンドモップを使って汚れをサッと拭き取りたいというニーズが出てきた。また、自動でプレフィルターについた汚れを吸い取る吸引力の弱いお掃除機構でもプレフィルター８についた汚れが剥離するようにさせる必要がある。   The sputtering process and the calender roll process may be applied to either a honeycomb weave or a plain weave which is a general structure of the resin fiber network 11. However, in the conventional pre-filter 8, after removing dust using a vacuum cleaner or the like, a detergent or the like is attached to a sponge or a soft brush to wash away dust and dirt that could not be sucked. As mentioned above, with the recent increase in cleanliness, tools such as hand mops that can be easily cleaned have been released, and there has been a need to quickly wipe off dirt using hand mops. Further, it is necessary to cause the dirt on the prefilter 8 to be peeled off even with a cleaning mechanism having a weak suction force that automatically sucks dirt on the prefilter.

従来は、樹脂繊維網１１の構造が、立体的に織ったハニカム構造であり、埃が樹脂繊維にぶつかりやすく埃の捕集効率が高いが、平滑ではないためハンドモップで汚れを拭き取っても凹凸の凹の部分に埃が残ってしまう。また、弱い吸引力のお掃除機構でプレフィルター８表面の埃を吸い取りながら移動させても凹凸に埃が残る。   Conventionally, the structure of the resin fiber network 11 is a three-dimensionally woven honeycomb structure. Dust easily hits the resin fiber and has high dust collection efficiency, but it is not smooth, so it is uneven even if the dirt is wiped off with a hand mop. Dust remains in the concave part. Further, even if the surface of the pre-filter 8 is moved while sucking up dust with a cleaning mechanism having a weak suction force, dust remains on the unevenness.

そこで、プレフィルター８の構造を平織り構造にすることでプレフィルター８の表面をより平滑にすることができ、また、使用者が洗浄しやすいといったメリットがある。   Therefore, by making the structure of the prefilter 8 into a plain weave structure, the surface of the prefilter 8 can be made smoother, and there is an advantage that the user can easily clean it.

また、樹脂枠１２に対する樹脂繊維網１１の取付面は、室内空気の吸気気流に対し上流側、下流側のどちら側に取り付けてもよい。ただし、プレフィルター８は一般的にラウンドしている空気調和機正面及び上面の吸込み口１ａの全面を塞ぐように取り付けてあり、定期的な洗浄を必要とするため使用者の着脱作業が頻繁に行われる。この際、空気調和機への取付けガイドに沿って滑らせるように着脱するがプレフィルター８の表面がガイドに接触し傷付きやすいため、室内空気の吸気気流の上流側に樹脂枠１２を取り付け樹脂繊維網の傷付を防止していた。   Further, the attachment surface of the resin fiber net 11 with respect to the resin frame 12 may be attached to either the upstream side or the downstream side with respect to the intake airflow of the room air. However, the pre-filter 8 is attached so as to block the entire front surface of the air conditioner that is generally round and the suction port 1a on the upper surface. Done. At this time, it is attached and detached so as to slide along the attachment guide to the air conditioner. However, since the surface of the prefilter 8 is in contact with the guide and easily damaged, the resin frame 12 is attached upstream of the intake airflow of the indoor air. The fiber net was prevented from being damaged.

しかし、少なくともガイドと接触する樹脂繊維網１１の摺動部分にスパッタリング加工を施すことで金属皮膜１３で保護することができ、樹脂繊維網１１の傷付きを防止することができ、さらには、樹脂枠１２を室内空気の吸気気流の下流側に配置することができるため、埃が付着する面に樹脂枠１２による凹凸がなくなり掃除がしやすくなるというメリットがある。   However, at least the sliding portion of the resin fiber network 11 that comes into contact with the guide can be protected by the metal film 13 by performing sputtering, and the resin fiber network 11 can be prevented from being scratched. Since the frame 12 can be disposed on the downstream side of the intake airflow of the room air, there is an advantage that the surface to which the dust adheres is free from unevenness due to the resin frame 12 and can be easily cleaned.

図７は、ＪＩＳＺ２８０１の規定に基づきステンレス材をスパッタリング加工した樹脂繊維網１１とスパッタリング加工なしの樹脂繊維網１１の抗菌性能評価の結果である。この測定は、公的な機関に依頼して行った。   FIG. 7 shows the results of the antibacterial performance evaluation of the resin fiber net 11 obtained by sputtering stainless steel and the resin fiber net 11 without sputtering based on JISZ2801. This measurement was performed by a public organization.

この結果によれば、黄色ブドウ球菌及び大腸菌の抗菌活性値である基準値２．０以上を満たし、前記菌の繁殖を抑制する効果が得られることが分かった。これにより、樹脂繊維網１１の表面にステンレス材の金属皮膜１３をスパッタリング加工で形成することで抗菌効果を得ることができ、近年の安全志向に対する抗菌ニーズに対応し快適で衛生的な生活環境を実現するため空気調和機を提供することができる。   According to this result, it was found that the antibacterial activity value of Staphylococcus aureus and Escherichia coli satisfies the standard value of 2.0 or more, and the effect of suppressing the growth of the bacteria can be obtained. As a result, an antibacterial effect can be obtained by forming a stainless steel metal film 13 on the surface of the resin fiber net 11 by sputtering, and a comfortable and hygienic living environment corresponding to the recent antibacterial needs for safety orientation. An air conditioner can be provided to achieve this.

本発明の一実施例を示す空気調和機の要部構成図である。It is a principal part block diagram of the air conditioner which shows one Example of this invention. 本発明の一実施例を示すプレフィルターの構成図である。It is a block diagram of the pre filter which shows one Example of this invention. 樹脂繊維網にスパッタリング加工を施した状態を表す図である。It is a figure showing the state which performed the sputtering process to the resin fiber net | network. 樹脂繊維網にスパッタリング加工を施し、さらにカレンダーロー加工を施した状態を説明する図である。It is a figure explaining the state which performed the sputter | spatter process on the resin fiber net | network, and also performed the calendering process. 線径と光沢度の関係を示したグラフである。It is the graph which showed the relationship between a wire diameter and glossiness. 線径とオープニングの関係を示したグラフである。It is the graph which showed the relationship between a wire diameter and an opening. スパッタリング加工を施した樹脂繊維網の抗菌試験結果である。It is an antibacterial test result of the resin fiber network which gave sputtering processing.

符号の説明Explanation of symbols

１…筐体、１ａ…吸込み口、１ｂ…吹出し口、２…化粧枠、３…台枠、４…露受け皿、５…熱交換器、６…通風ファン、７…エアフィルター、８…プレフィルター、９…風向羽根、１０…室内ユニット、１１…プレフィルター枠、１２…プレフィルター網、１３…金属皮膜、１４…縦樹脂繊維、１５…横樹脂繊維。
DESCRIPTION OF SYMBOLS 1 ... Housing, 1a ... Suction inlet, 1b ... Outlet, 2 ... Cosmetic frame, 3 ... Base frame, 4 ... Dew tray, 5 ... Heat exchanger, 6 ... Ventilation fan, 7 ... Air filter, 8 ... Pre filter , 9 ... Wind direction blades, 10 ... Indoor unit, 11 ... Prefilter frame, 12 ... Prefilter net, 13 ... Metal film, 14 ... Vertical resin fiber, 15 ... Horizontal resin fiber.

Claims (6)

室内空気の塵埃を捕集する樹脂繊維網と、この樹脂繊維網を支持固定する樹脂枠とを備えた空気調和機用プレフィルターにおいて、前記樹脂繊維網の両面の表面または片面の表面にステンレスをスパッタリングによって付着させた空気調和機用プレフィルター。 In a pre-filter for an air conditioner having a resin fiber net that collects dust from indoor air and a resin frame that supports and fixes the resin fiber net, stainless steel is applied to both surfaces or one surface of the resin fiber net. Prefilter for air conditioner attached by sputtering. 請求項１において、前記樹脂繊維網の縦横繊維の交点部を平滑化するカレンダーロール加工を施した空気調和機用プレフィルター。 The pre-filter for an air conditioner according to claim 1, wherein a calendar roll process is applied to smooth the intersections of vertical and horizontal fibers of the resin fiber network. 請求項１において、空気調和機の室内機に設けられたガイドとの摺動接触する部分にステンレスをスパッタリングにより付着させた空気調和機用プレフィルター。   The pre-filter for an air conditioner according to claim 1, wherein stainless steel is attached to a portion in sliding contact with a guide provided in the indoor unit of the air conditioner by sputtering. 室内空気の塵埃を捕集する樹脂繊維網と、この樹脂繊維網を支持固定する樹脂枠とを備えた空気調和機用プレフィルターにおいて、前記樹脂繊維網の両面の表面または片面の表面にステンレスをスパッタリングによって付着させ、前記樹脂繊維網の開口率を５５％〜６０％とし、前記樹脂繊維網を構成する線材の線径を１５０μｍ〜２２０μｍとした空気調和機用プレフィルター。 In a pre-filter for an air conditioner having a resin fiber net that collects dust from indoor air and a resin frame that supports and fixes the resin fiber net, stainless steel is applied to both surfaces or one surface of the resin fiber net. A prefilter for an air conditioner that is attached by sputtering, has an opening ratio of the resin fiber network of 55% to 60%, and a wire diameter of the wire constituting the resin fiber network is 150 μm to 220 μm. 上部に吸込み口下部に吹出し口を有する室内機と、この室内機内に設けられた室内熱交換器と、この室内熱交換器と前記空気吹出し口との間に設けられたファンと、前記室内熱交換器の空気流上流に設けられたプレフィルターとを備えた空気調和機において、前記プレフィルターは樹脂繊維網の両面の表面または片面の表面にステンレスをスパッタリングによって付着させたものである空気調和機。   An indoor unit having an air outlet at the upper part of the suction port, an indoor heat exchanger provided in the indoor unit, a fan provided between the indoor heat exchanger and the air outlet, and the indoor heat An air conditioner comprising a pre-filter provided upstream of the air flow of the exchanger, wherein the pre-filter is made by attaching stainless steel to both surfaces or one surface of a resin fiber network by sputtering. . 上部に吸込み口下部に吹出し口を有する室内機と、この室内機内に設けられた室内熱交換器と、この室内熱交換器と前記空気吹出し口との間に設けられたファンと、前記室内熱交換器の空気流上流に設けられたプレフィルターとを備えた空気調和機において、前記プレフィルターは、樹脂繊維網の両面の表面または片面の表面にステンレスをスパッタリングによって付着させ、前記樹脂繊維網の開口率を５５％〜６０％とし、前記樹脂繊維網を構成する線材の線径を１５０μｍ〜２２０μｍとしたものである空気調和機。
An indoor unit having an air outlet at the upper part of the suction port, an indoor heat exchanger provided in the indoor unit, a fan provided between the indoor heat exchanger and the air outlet, and the indoor heat In the air conditioner provided with a prefilter provided upstream of the air flow of the exchanger, the prefilter attaches stainless steel by sputtering to both surfaces or one surface of the resin fiber network, An air conditioner having an aperture ratio of 55% to 60% and a wire diameter of the wire constituting the resin fiber network of 150 μm to 220 μm.
JP2005299546A 2005-10-14 2005-10-14 Pre-filter for air conditioner and air conditioner using the same Expired - Fee Related JP4636990B2 (en)

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