JP4167850B2

JP4167850B2 - Clean work bench equipment

Info

Publication number: JP4167850B2
Application number: JP2002127396A
Authority: JP
Inventors: 恵一小野
Original assignee: Hitachi Industrial Equipment Systems Co Ltd
Current assignee: Hitachi Industrial Equipment Systems Co Ltd
Priority date: 2002-04-26
Filing date: 2002-04-26
Publication date: 2008-10-22
Anticipated expiration: 2022-04-26
Also published as: JP2003320261A

Description

【０００１】
【発明に属する技術分野】
本発明は、医療、製薬関連等の分野で用いる実験用動物の飼育設備に対し点検、清掃等の作業を行う清浄作業台装置に関する。
【０００２】
【従来の技術】
従来、遺伝子操作などのバイオハザード（生物的感染）対策用の清浄作業台装置では、作業空間に作業者の手が入るように前面側に開口部が設けられている。該開口部の下部に位置する作業台面には、空気を吸込むための空気吸込み口が設けられ、該開口部にエアカーテン気流を形成するようになっている。該エアカーテン気流は、作業者が細菌等に感染するのを防止したり、作業台内の実験対象物を装置外部の細菌や塵埃などから保護したりする。図５に、従来の清浄作業台装置の構成例を示す。清浄作業台装置１'の内部の送風機４'により送られる気流は、ＨＥＰＡフィルタ（ＨｉｇｈＥｆｆｉｃｉｅｎｃｙＰａｒｔｉｃｕｌａｔｅＡｉｒＦｉｌｔｅｒ）５ａ'を通して作業空間１８'に送られる。ＨＥＰＡフィルタ５ａ'では空気中の塵埃が除去されるため、作業空間１８'内には清浄化された空気１６'が送られる。また、作業空間１８'に隣接して循環流路３'が形成されている。該循環流路３'は、作業空間１８'に構成された空気流出口８'、及び、作業空間１８'下部の作業台２'の作業台面の前面側に構成された空気吸込み口７'と連結され、該空気流出口８'と該空気吸込み口７'とから空気を吸込んで循環させている。特に、空気吸込み口と、作業空間１８'前面の前面シャッタ６'の下部の開口部とにより、エアカーテン気流１４'が該開口部とその近傍に形成され、作業者の細菌感染や、作業空間内への外部細菌の混入等が防止されるようになっている。空気吸込み口７'、空気流出口８'から循環流路３'に吸込まれた気流は、循環流路３'を通って送風機４'へ吸込まれる。送風機４'へ吸込まれた空気は、一部は作業空間側の配置したＨＥＰＡフィルタ５ａ'を通って再び作業空間１８'に供給され、他は別のＨＥＰＡフィルタ５ｂ'を通って装置外部へ排出される。該清浄作業台装置を、例えば実験動物飼育用ケージの清掃・点検用に用いる場合、該動物飼育用ケージの作業空間１８'内への搬入は、前面シャッタ６'を開き、開口部を拡大した状態にして該開口部から搬入する。搬入後は、感染防止のために再び、上記前面シャッタ６'を閉じて所定の大きさの開口部としエアカーテン気流１４'を形成した状態で、作業空間１８'に清浄空気を供給し、該飼育用ケージの点検・清掃の作業を行う。エアカーテン気流については例えば、特開平７−１０３５３２号公報に記載された技術がある。該公報には、作業台開口部の開口寸法を規制することで、エアカーテン気流の速度を管理する技術が記載されている。
【０００３】
【発明が解決しようとする課題】
上記従来構成においては、例えば上記動物飼育用ケージの作業空間１８'内への搬入と搬出を、前面シャッタ６'を開閉することで清浄作業台装置１'の前面側において行うため、該動物飼育用ケージの搬入・搬出時の作業性が悪く、かつ、作業台面の前面側、すなわち作業者の側に細菌等が付着し易く、作業者が細菌等に感染し易い。
本発明の課題点は、上記従来技術の状況に鑑み、清浄作業台装置において、動物飼育用ケージ等点検・清掃作業の対象物の搬入・搬出を作業性が良い状態で行うことができ、かつ、外部に細菌、ウィルス等が漏れたり、外部から細菌、ウィルス、塵埃等が作業空間内に浸入したりせず安全な作業ができるようにすること、である。
本発明の目的は、かかる課題点を解決できる技術の提供にある。
【０００４】
【課題を解決するための手段】
上記課題点を解決するために、本発明では、基本的には、清浄作業台装置において、作業台上方の作業空間（該当実施例：符号１８）と外部とを結ぶ開口部を、作業台の前面側の空気吸込み口（該当実施例：符７）と両側面側の空気吸込み口（該当実施例：符号９ａ、９ｂ）とに対応させて設け、該開口部位置において、エアカーテン気流（該当実施例：符号１４、１４ａ、１４ｂ）を形成した状態で、該作業空間に清浄空気を供給する構成とする。具体的には、作業台上方の作業空間に清浄空気が供給される構成を備えた清浄作業台装置として、（１）上記作業台（該当実施例：符号２）が、作業台面内における前面側の第１の位置に第１の空気吸込み口（該当実施例：符号７）を、また、両側面側の第２の位置に第２の空気吸込み口（該当実施例：符号９ａ、９ｂ）を有し、上記作業空間（該当実施例：符号１８）の側方側の位置であって、上記第１の位置に対応した位置に該作業空間と外部とを結ぶ第１の開口部（該当実施例：符号１１）が形成され、上記第２の位置に対応した位置に第２の開口部（該当実施例：符号１１ａ、１１ｂ）が形成され、上記第１の空気吸込み口（該当実施例：符号７）と上記第１の開口部（該当実施例：符号１１）との組合わせと、上記第２の空気吸込み口（該当実施例：符号９ａ、９ｂ）と上記第２の開口部（該当実施例：符号１１ａ、１１ｂ）との組合わせにより、上記作業空間と外部との間にエアカーテン気流（該当実施例：符号１１、１４ａ、１４ｂ）を形成する構成とする。（２）作業台面（該当実施例：符号２ａ）の前面側と両側面側とにそれぞれ空気吸込み口（該当実施例：符号７、９ａ、９ｂ）を有する作業台（該当実施例：符号２）と、空気を送る送風機（該当実施例：符号４）と、該送風機から出た空気を清浄化するフィルタ（該当実施例：符号５ａ）と、上記空気吸込み口から吸込んだ空気を上記送風手段側に還流させる循環部（該当実施例：符号３）と、上記作業空間の側方側に配され上記各空気吸込み口に対応した前面側の位置と両側面側の位置とにそれぞれ、該作業空間と外部とを結ぶ開口部を形成する部材（該当実施例：符号２０）とを備え、上記各空気吸込み口と上記開口部とにより上記作業空間と外部との間にエアカーテン気流（該当実施例：符号１１、１４ａ、１４ｂ）を形成した状態で、上記フィルタから該作業空間に清浄空気（該当実施例：符号１６）を供給する構成とする。（３）作業台面の前面側と両側面側とにそれぞれ空気吸込み口（該当実施例：符号７、９ａ、９ｂ）を有する作業台と、空気を送る送風機（該当実施例：符号４）と、該送風機から出た空気を清浄化するフィルタ（該当実施例：符号５ａ）と、上記空気吸込み口から吸込んだ空気を上記送風手段側に還流させる循環部（該当実施例：符号３）と、上記作業空間の側方側に配され上記各空気吸込み口に対応した前面側の位置と両側面側の位置とにそれぞれ、該作業空間と外部とを結ぶ開口部を形成する第１の部材（該当実施例：符号２０）と、上記作業台面の両側面側の上記空気吸込み口と該空気吸込み口に対応した上記両側面側の位置の開口部とのいずれか一方または両方を塞ぐ構成を有し、着脱、移動または変位可能な第２の部材（該当実施例：符号１２ａ、１２ｂ、３１ａ、３２ａ）とを備え、上記作業台面の両側面側の上記空気吸込み口とこれに対応した上記両側面側の位置の上記開口部とのいずれか一方または両方を塞ぎ、少なくとも、上記作業台面の前面側の上記空気吸込み口とこれに対応した上記前面側の位置の上記開口部とにより上記作業空間と外部との間にエアカーテン気流を形成し、上記フィルタから該作業空間に清浄空気を供給する構成とする。（４）上記（３）において、上記第２の部材（該当実施例：符号１２ａ）は、上記開口部を塞ぐ第１の部分（該当実施例：符号１２ａ_１、３１ａ）と上記空気吸込み口を塞ぐ第２の部分（該当実施例：符号１２ａ_２、３２ａ）とを備え、該両部分が連動する構成とする。（５）上記（４）において、上記第２の部材は、上記第１の部分（該当実施例：符号１２ａ_１）と上記第２の部分（該当実施例：符号１２ａ_２）とを互いに異なる位置に備えた一体状の構成とする。（６）上記（３）において、上記第２の部材は、支点周りに回動可能な構成とする。
【０００５】
【発明の実施の形態】
以下、本発明の実施例につき、図面を用いて説明する。
図１、図２は本発明の第１の実施例の説明図である。図１は清浄作業台装置の全体構成例で、（ａ）は側面方向断面図、（ｂ）は前面側外観図、図２は作業台の平面図である。
図１、図２において、１は清浄作業台装置、２は作業台、３は循環流路、４は送風機、５ａ、５ｂはＨＥＰＡフィルタ（ＨｉｇｈＥｆｆｉｃｉｅｎｃｙＰａｒｔｉｃｕｌａｔｅＡｉｒＦｉｌｔｅｒ）、６は前面シャッタ、７は、作業台２の作業台面内の前面側に設けられた第１の空気吸込み口、９ａ、９ｂは、作業台２の作業台面内の側面側に設けられた第２の空気吸込み口、８は、装置の背面側に設けられた空気流出口、１８は作業空間、１１は、前面シャッタ６の下方にあって上記作業台２の作業台面内の前面側の上記第１の空気吸込み口７に対応する位置に設けられた第１の開口部、１１ａ、１１ｂは、動物飼育用ケージ等点検・清掃作業の対象物を作業空間に搬入・搬出するために装置の側面側位置、すなわち作業空間の側方側の位置であって上記空気吸込み口９ａ、９ｂに対応する位置に設けられた第２の開口部、１４は、上記第１の開口部１１と上記第１の空気吸込み口７により形成されるエアカーテン気流、１４ａ、１４ｂはそれぞれ、上記第２の開口部１１ａと上記第２の空気吸込み口９ａにより形成されるエアカーテン気流、上記第２の開口部１１ｂと上記第２の空気吸込み口９ｂにより形成されるエアカーテン気流である。２０は、作業空間１８の側方側に配され上記空気流出口８と上記第２の開口部１１ａ、１１ｂが設けられた部材である。かかる構成において、第２の開口部１１ａまたは１１ｂから動物飼育用ケージ等点検・清掃作業の対象物を作業空間に搬入・搬出して作業台上に設置した状態で、送風機４から出る空気をＨＥＰＡフィルタ５ａで清浄化して清浄空気とし、該清浄空気１６を作業空間１８に供給する。作業空間１８内では、該清浄空気１６により動物飼育用ケージ等の清掃等がなされる。清浄空気１６の流動に基づき、第１の開口部１１とその近傍では、作業台２の作業台面内の前面側に設けられた第１の空気吸込み口７と該第１の開口部１１とにより、エアカーテン気流１４が形成され、第２の開口部１１ａ、１１ｂとその近傍では、作業台２の作業台面内の側面側に設けられた第２の空気吸込み口９ａ、９ｂと該第２の開口部１１ａ、１１ｂとにより、エアカーテン気流１４ａ、１４ｂが形成される。エアカーテン気流１４は、第１の開口部１１を通って細菌等が、作業空間１８から装置外部に漏れて作業者が感染したり、装置外部の細菌や塵埃等が作業空間１８内に浸入したりするのを防ぐ。また、エアカーテン気流１４ａ、１４ｂは、少なくとも作業空間１８内から装置外部への空気の流れを抑えるため、第２の開口部１１ａ、１１ｂを通って細菌等が、作業空間１８から装置外部に漏れたり、逆に、装置外部の細菌や塵埃等が作業空間１８内に浸入したりするのを防ぐ。作業空間１８内を流れた空気は、作業台２の第１の空気吸込み口７、第２の空気吸込み口９ａ、９ｂに吸込まれる。吸込まれた空気は、循環流路３内を流れて再び送風機４に吸込まれる。送風機４に吸込まれた空気は、一部はＨＥＰＡフィルタ５ａを通って再び作業空間１８に供給され、残りはＨＥＰＡフィルタ５ｂを通って装置外に排気される。動物飼育用ケージ等は点検・清掃作業後、第２の開口部１１ａまたは１１ｂから外部に搬出される。
上記第１の実施例によれば、第２の開口部１１ａ、１１ｂから、動物飼育用ケージ等を作業空間１８に対し搬入または搬出するため、該搬入または搬出の作業性を改善できる。また、第１の開口部１１、第２の開口部１１ａ、１１ｂにそれぞれ、エアカーテン気流１４、１４ａ、１４ｂが形成されるため、装置外部に細菌等が漏れたり、逆に外部から細菌や塵埃等が作業空間１８内に浸入したりすることが抑えられ、安全な作業が可能となる。
【０００６】
図３は、本発明の第２の実施例の説明図である。図３（ａ）は清浄作業台装置の作業空間の周囲の構成を装置前面側から見た断面図、図３（ｂ）は、図３（ａ）におけるＡ部の拡大図である。
本実施例は、作業台面の側面側の空気吸込み口と該空気吸込み口に対応した開口部の両方を塞ぐ部材を備えた構成例である。
図３において、２は作業台、５ａはＨＥＰＡフィルタ、９ａ、９ｂは、作業台２の作業台面内の側面側に設けられた第２の空気吸込み口（作業台２の作業台面内の前面側には第１の空気吸込み口が設けられているとする）、１０は、動物飼育用ケージ等点検・清掃作業の対象物、１８は作業空間、１１は、作業台２の作業台面内の前面側の上記第１の空気吸込み口に対応する位置に設けられた第１の開口部、１１ａ、１１ｂは、動物飼育用ケージ等点検・清掃作業の対象物１０を作業空間１８に対し搬入・搬出するために装置の側面側位置、すなわち作業空間１８の側方側の位置であって上記空気吸込み口９ａ、９ｂに対応する位置に設けられた第２の開口部、１２ａは上記第２の開口部１１ａ及び上記第２の空気吸込み口９ａを塞ぐための部材、１２ｂは上記第２の開口部１１ｂ及び上記第２の空気吸込み口９ｂを塞ぐための部材、１４ａは、部材１２ａが装置に装着されない場合に上記第２の開口部１１ａと上記第２の空気吸込み口９ａにより形成されるエアカーテン気流、１４ｂは、部材１２ｂが装置に装着されない場合に上記第２の開口部１１ｂと上記第２の空気吸込み口９ｂにより形成されるエアカーテン気流である。本実施例では、上記部材１２ａ、１２ｂはそれぞれ、Ｌ字状断面を有し、装置に対し移動または着脱可能な構成を備える。動物飼育用ケージ等点検・清掃作業の対象物１０の作業空間１８内への搬入後、部材１２ａは、（ｂ）のように装置に装着され、第２の開口部１１ａと第２の空気吸込み口９ａを塞ぐ。部材１２ｂも、これと同様、装置に装着されて、第２の開口部１１ｂと第２の空気吸込み口９ｂを塞ぐ。部材１２ａにはＬ字状を形成する１２ａ_１、１２ａ_２の部分が一体状に設けられている。部分１２ａ_１は第２の開口部１１ａを塞ぎ、部分１２ａ_２は第２の空気吸込み口９ａを塞ぐ。また、部材１２ｂにはＬ字状を形成する１２ｂ_１、１２ｂ_２の部分が一体状に設けられている。部分１２ｂ_１は第２の開口部１１ｂを塞ぎ、部分１２ｂ_２は第２の空気吸込み口９ｂを塞ぐ。このように、部材１２ａが第２の開口部１１ａと第２の空気吸込み口９ａを塞ぎ、部材１２ｂが、第２の開口部１１ｂと第２の空気吸込み口９ｂを塞ぐことにより、上記エアカーテン気流１４ａ、１４ｂは形成されず、作業空間１８内での清浄空気は、該作業空間１８の中央部から第１の空気吸込み口７の領域にかけての流路を主流路として流動する。上記第１の開口部側には、部材１２ａ、１２ｂの装着の有無に関係なく、該第１の開口部と上記第１の空気吸込み口とによりエアカーテン気流が形成されるようになっている。２０は、作業空間１８の側方側に配され、少なくとも上記第２の開口部１１ａ、１１ｂが設けられた部材である。かかる構成において、第２の開口部１１ａまたは１１ｂから動物飼育用ケージ等点検・清掃作業の対象物を作業空間に搬入・搬出して作業台上に設置した後、部材１２ａ、１２ｂを装置に装着し、第２の開口部１１ａ、第２の空気吸込み口９ａ、第２の開口部１１ｂ及び第２の空気吸込み口９ｂを塞ぐ。該状態で、送風機（図示なし）から出る空気をＨＥＰＡフィルタ５ａで清浄化して清浄空気とし、該清浄空気を作業空間１８内に供給する。作業空間１８内では、該清浄空気により動物飼育用ケージ等の清掃等がなされる。清浄空気の流動に基づき、第１の開口部１１とその近傍では、作業台２の作業台面内の前面側に設けられた第１の空気吸込み口と該第１の開口部１１とにより、エアカーテン気流１４が形成される。エアカーテン気流１４は、第１の開口部１１を通って細菌等が、作業空間１８から装置外部に漏れて作業者が感染したり、装置外部の細菌等が作業空間１８内に浸入したりするのを防ぐ。作業空間１８内を流れた空気は、作業台２の第１の空気吸込み口に吸込まれる。吸込まれた空気は、循環流路３内を流れて再び送風機に吸込まれる。送風機に吸込まれた空気は、一部はＨＥＰＡフィルタ５ａを通って再び作業空間１８に供給され、残りは他のＨＥＰＡフィルタ（図示なし）を通って装置外に排気される。点検・清掃作業後、部材１２ａ、１２ｂの装着状態を解いて、動物飼育用ケージ等点検・清掃作業の対象物１０を、第２の開口部１１ａまたは１１ｂから装置外部に搬出する。
上記第２の実施例によれば、上記第１の実施例の場合と同様、第２の開口部１１ａ、１１ｂから、動物飼育用ケージ等を作業空間に搬入または搬出するため、搬入または搬出の作業性を改善できる。また、点検・清掃作業時は、第２の開口部１１ａ、１１ｂ及び第２の空気吸込み口９ａ、９ｂを塞いだ状態にするため、該第２の開口部１１ａ、１１ｂを通って、細菌等が装置外部に漏れたり、装置外部から細菌等が装置内に浸入したりするのが抑えられるとともに、作業空間１８内における空気の流動を、淀みや、局部的な流速低下のない状態にすることができるため、清掃効率を高めることが可能となる。このため、衛生上安全なかつ能率の良い作業を行うことができる。
なお、上記第２の実施例構成では、第２の開口部１１ａと第２の空気吸込み口９ａ、及び、第２の開口部１１ｂと第２の空気吸込み口９ｂを塞ぐ構成としたが、第２の開口部１１ａ、第２の空気吸込み口９ａのいずれか一方と、第２の開口部１１ｂ、第２の空気吸込み口９ｂのいずれか一方とを塞ぐ構成としてもよいし、第２の開口部１１ａと第２の空気吸込み口９ａ、または、第２の開口部１１ｂと第２の空気吸込み口９ｂのいずれか一方を塞ぐ構成としてもよいし、第２の開口部１１ａ、第２の空気吸込み口９ａ、第２の開口部１１ｂ、第２の空気吸込み口９ｂのいずれかを塞ぐ構成としてもよい。
【０００７】
図４は本発明の第３の実施例の説明図である。図４は、作業台面の側面側の空気吸込み口に対応した開口部の周辺構成を示す。
本実施例も、上記第２の実施例と同様、作業台面の側面側の空気吸込み口と該空気吸込み口に対応した開口部の両方を塞ぐ場合の構成例である。本第３の実施例は、作業台面の側面側の空気吸込み口を塞ぐ部材と、該空気吸込み口に対応した開口部を塞ぐ部材とを、固定支点の周りに回動変位する構成のものとした場合の例である。
図４において、２は作業台、９ａは、作業台２の作業台面内の一方の側面側に設けられた第２の空気吸込み口（作業台２の作業台面内の他方の側面側にはもう１つの第２の空気吸込み口が設けられ、作業台２の作業台面内の前面側には第１の空気吸込み口が設けられているとする）、１８は作業空間、１１ａは、動物飼育用ケージ等点検・清掃作業の対象物（図示なし）を作業空間１８に対し搬入・搬出するために装置の側面側位置、すなわち作業空間１８の側方側の位置であって上記空気吸込み口９ａに対応する位置に設けられた第２の開口部（作業台２の作業台面内の他方の側面側の上記もう１つの第２の空気吸込み口に対応する位置には、もう１つの第２の開口部が設けられているとする）、３１ａは、回動変位により上記第２の開口部１１ａを塞いだり開放したりする部材、３３ａは、部材３１ａが回動変位するときの支点、３２ａは、回動変位により上記第２の空気吸込み口９ａを塞いだり開放したりする部材、３４ａは、部材３２ａが回動変位するときの支点、４０は部材３１ａの位置決め用のストッパ、４１は部材３２ａの位置決め用のストッパである。部材３１ａと部材３２ａは連動的に回動変位動作されるようになっているものとする。作業台２の作業台面内の他方の側面側に設けられたもう１つの第２の空気吸込み口、及び、それに対応して設けられたもう１つの第２の開口部についても同様である。動物飼育用ケージ等点検・清掃作業の対象物（図示なし）を作業空間１８に対し搬入したり、搬出したりするときには、第２の開口部１１ａ他を開放状態にして該第２の開口部から該搬入作業を行い、搬入作業後は、部材３１ａ、３２ａ他を連動的に回動変位させて、第２の開口部１１ａ他及び第２の吸込み口９ａ他を塞ぐ。本第３の実施例における他の部分の構成及び作用は、上記第２の実施例の場合と同様である。このように、部材３１ａ、３２ａ他が第２の開口部と第２の空気吸込み口を塞ぐことにより、第２の開口部とその近傍には上記エアカーテン気流は形成されず、作業空間１８内での清浄空気は、該作業空間１８の中央部から第１の空気吸込み口の領域にかけての流路を主流路として流動する。作業台面の前面側の上記第１の開口部側には、部材３１ａ他、３２ａ他の回動位置に関係なく、該第１の開口部と上記第１の空気吸込み口とにより、エアカーテン気流が形成される。本第３の実施例における他の部分の構成及び作用は、上記第２の実施例の場合と同様である。かかる構成において、第２の開口部から動物飼育用ケージ等点検・清掃作業の対象物を作業空間に搬入・搬出して作業台上に設置した後、部材３１ａ、３２ａを回動変位させて、第２の開口部１１ａ他、第２の空気吸込み口９ａ他を塞ぐ。該状態で、送風機（図示なし）から出る空気をＨＥＰＡフィルタ（図示なし）で清浄化して清浄空気とし、該清浄空気を作業空間１８内に供給する。作業空間１８内では、該清浄空気の供給された環境内で作業がなされる。清浄空気の流動に基づき、第１の開口部とその近傍では、作業台２の作業台面内の前面側に設けられた第１の空気吸込み口と該第１の開口部１１とにより、エアカーテン気流が形成される。該形成されたエアカーテン気流は、第１の開口部を通って細菌等が、作業空間１８から装置外部に漏れて作業者が感染したり、装置外部の細菌等が作業空間１８内に浸入したりするのを防ぐ。作業空間１８内を流れた空気は、作業台２の第１の空気吸込み口に吸込まれる。吸込まれた空気は、循環流路３内を流れて再び送風機に吸込まれる。送風機に吸込まれた空気は、一部はＨＥＰＡフィルタを通って再び作業空間１８に供給され、残りは他のＨＥＰＡフィルタ（図示なし）を通って装置外に排気される。点検・清掃作業後、部材３１ａ他、３２ａ他を回動変位させ、第２の開口部及び第２の吸込み口を開放状態にして、動物飼育用ケージ等点検・清掃作業の対象物を、第２の開口部１１ａ他から装置外部に搬出する。
上記第３の実施例によれば、動物飼育用ケージ等を第２の開口部から作業空間に搬入または搬出する構成のため、搬入または搬出の作業性を改善できる。また、上記第２の実施例の場合と同様、点検・清掃作業時は、第２の開口及び第２の空気吸込み口を塞いだ状態にするため、該第２の開口部を通って、細菌等が装置外部に漏れたり、装置外部から細菌等が装置内に浸入したりするのが抑えられ感染を防止できるとともに、作業空間１８内における空気の流動を、淀みや、局部的な流速低下のない状態にすることができるため、清掃効率を高めることが可能となる。このため、衛生的で安全なかつ能率の良い作業を行うことができる。
なお、上記第３の実施例構成では、第２の開口部１１ａと第２の空気吸込み口９ａ、及び、もう一方の第２の開口部ともう一方の第２の空気吸込み口を塞ぐ構成としたが、第２の開口部１１ａと第２の空気吸込み口９ａ、または、もう一方の第２の開口部１１ｂともう一方の第２の空気吸込み口の、いずれか一方を塞ぐ構成としてもよいし、部材３１ａ、３２ａ等を連動させずに、第２の開口部１１ａ、第２の空気吸込み口９ａのいずれか一方と、もう一方の第２の開口部、もう一方の第２の空気吸込み口のいずれか一方とを塞ぐ構成としてもよいし、第２の開口部１１ａ、第２の空気吸込み口９ａ、もう一方の第２の開口部１１ｂ、もう一方の第２の空気吸込み口９ｂのいずれかを塞ぐ構成などとしてもよい。
【０００８】
また、上記各実施例構成では、第１、第２の開口部として、それぞれを１個の開口から成る構成としたが、本発明はこれに限定されず、それぞれの開口部または一部のものを、複数の開口から成る構成としてもよい。また、上記各実施例では、空気清浄化のために、ＨＥＰＡフィルタを用いる構成としたが、本発明はこれにも限定されず、例えばＵＬＰＡフィルタ（ＵｌｔｒａＬｏｗＰｅｎｅｔｒａｔｉｏｎＡｉｒＦｉｌｔｅｒ）等を用いてもよい。また、第２の開口部１１ａ、１１ｂ、第２の空気吸込み口９ａ、９ｂを塞ぐ構成としては、完全な閉鎖状態を形成するものだけに限らず、実用上支障ない程度であれば、空気が通過する空隙部がある構成であってもよい。
【０００９】
【発明の効果】
本発明によれば、衛生的で安全な作業が可能な清浄作業台装置を提供できる。点検・清掃作業対象物を、清浄作業台装置内に搬入または清浄作業台装置から搬出するときの作業性を改善できる。
【図面の簡単な説明】
【図１】本発明の第１の実施例を示す図である。
【図２】本発明の第１の実施例における作業台の平面図である。
【図３】本発明の第２の実施例を示す図である。
【図４】本発明の第３の実施例を示す図である。
【図５】従来の構成例を示す図である。
【符号の説明】
１、１'…清浄作業台装置、２、２'…作業台、２ａ…作業台面、３、３'…循環流路、４、４'…送風機、５ａ、５ｂ、５ａ'、５ｂ'…ＨＥＰＡフィルタ、６、６'…前面シャッタ、７…第１の空気吸込み口、８、８'…空気流出口、９ａ、９ｂ…第２の空気吸込み口、１１…第１の開口部、１１ａ、１１ｂ…第２の開口部、１２ａ、１２ｂ、３１ａ、３２ａ…部材、１４、１４ａ、１４ｂ、１４'…エアカーテン気流、１６、１６'…清浄空気、１８、１８'…作業空間。[0001]
[Technical field belonging to the invention]
The present invention relates to a cleaning work table device that performs inspection, cleaning, and the like on laboratory animal breeding equipment used in fields such as medicine and pharmaceuticals.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a cleaning work table device for biohazard (biological infection) countermeasures such as genetic manipulation, an opening is provided on the front side so that an operator's hand can enter the work space. The work table surface located below the opening is provided with an air suction port for sucking air, and an air curtain airflow is formed in the opening. The air curtain airflow prevents the worker from being infected with bacteria and the like, and protects the test object in the workbench from bacteria and dust outside the apparatus. In FIG. 5, the structural example of the conventional cleaning worktable apparatus is shown. The airflow sent by the blower 4 ′ inside the cleaning worktable device 1 ′ is sent to the work space 18 ′ through a HEPA filter (High Efficiency Particulate Air Filter) 5 a ′. Since the dust in the air is removed by the HEPA filter 5a ′, purified air 16 ′ is sent into the working space 18 ′. Further, a circulation flow path 3 ′ is formed adjacent to the work space 18 ′. The circulation channel 3 ′ includes an air outlet 8 ′ configured in the work space 18 ′, and an air suction port 7 ′ configured on the front side of the work table surface of the work table 2 ′ below the work space 18 ′. Connected, air is sucked and circulated from the air outlet 8 'and the air inlet 7'. In particular, an air curtain air flow 14 ′ is formed in and near the opening by the air suction port and the opening below the front shutter 6 ′ on the front surface of the work space 18 ′. It is designed to prevent external bacteria from entering inside. The airflow sucked into the circulation channel 3 ′ from the air inlet 7 ′ and the air outlet 8 ′ passes through the circulation channel 3 ′ and is sucked into the blower 4 ′. Part of the air sucked into the blower 4 ′ is supplied again to the work space 18 ′ through the HEPA filter 5a ′ arranged on the work space side, and the other is discharged outside the apparatus through another HEPA filter 5b ′. Is done. When the cleaning workbench device is used, for example, for cleaning and checking a laboratory animal breeding cage, loading the animal breeding cage into the work space 18 ′ opens the front shutter 6 ′ and enlarges the opening. The state is carried in through the opening. After carrying in, in order to prevent infection, the front shutter 6 ′ is closed again to form an opening of a predetermined size to form an air curtain air flow 14 ′, and clean air is supplied to the work space 18 ′. Check and clean the cages for rearing. Regarding the air curtain airflow, for example, there is a technique described in JP-A-7-103532. This publication describes a technique for managing the velocity of the air curtain air flow by regulating the opening size of the work table opening.
[0003]
[Problems to be solved by the invention]
In the above-described conventional configuration, for example, the above-described animal breeding cage is carried into and out of the work space 18 ′ by opening and closing the front shutter 6 ′ on the front side of the clean work table apparatus 1 ′. The workability during loading and unloading of the cage is poor, and bacteria and the like are likely to adhere to the front side of the work table surface, that is, the worker's side, and the worker is easily infected with bacteria and the like.
In view of the situation of the prior art, the problem of the present invention is that, in the cleaning worktable device, it is possible to carry in / out the object for inspection / cleaning work such as an animal breeding cage with good workability, and It is possible to perform safe work without leakage of bacteria, viruses, etc. to the outside or bacteria, viruses, dust, etc. from entering the work space from the outside.
An object of the present invention is to provide a technique capable of solving such problems.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, in the present invention, basically, in the cleaning work table apparatus, an opening connecting the work space above the work table (corresponding example: reference numeral 18) and the outside is provided on the work table. Front air inlet (corresponding example: 7) and Both Provided corresponding to the side air inlet (corresponding example: reference numerals 9a, 9b), and in the state where the air curtain airflow (corresponding example: signs 14, 14a, 14b) is formed at the opening position, The clean air is supplied to the working space. Specifically, as a cleaning work table device having a configuration in which clean air is supplied to the work space above the work table, (1) the work table (corresponding example: reference numeral 2) is the front side in the work table surface. The first air suction port (corresponding example: reference numeral 7) at the first position, Both It has a second air suction port (corresponding example: reference numerals 9a, 9b) at a second position on the side surface side, and is a position on the side of the working space (corresponding example: reference numeral 18), A first opening (corresponding example: reference numeral 11) that connects the work space and the outside is formed at a position corresponding to the first position, and a second opening ( Corresponding embodiment: reference numerals 11a and 11b) are formed, and the combination of the first air suction port (corresponding embodiment: reference numeral 7) and the first opening (corresponding embodiment: reference numeral 11), and the above An air curtain is formed between the work space and the outside by combining the second air suction port (corresponding embodiment: reference numerals 9a and 9b) and the second opening (corresponding embodiment: reference numerals 11a and 11b). It is set as the structure which forms airflow (corresponding Example: code | symbol 11, 14a, 14b). (2) The front side of the work table (corresponding embodiment: reference numeral 2a) Both Working table (corresponding embodiment: reference numeral 2) having air suction ports (corresponding embodiments: reference numerals 7, 9a, 9b) on the side surfaces, a blower (corresponding embodiment: reference numeral 4) for sending air, and the blower A filter (corresponding embodiment: reference numeral 5a) for purifying the air discharged from the air, a circulation section (corresponding embodiment: reference numeral 3) for returning the air sucked from the air suction port to the air blowing means side, and the work space. Position on the front side corresponding to each air inlet Both And a member for forming an opening for connecting the working space and the outside (corresponding example: reference numeral 20) at the position on the side surface side, and the working space and the outside are formed by the air suction ports and the opening. In this state, clean air (corresponding embodiment: reference numeral 16) is supplied from the filter to the working space in a state where an air curtain airflow (corresponding embodiment: reference numerals 11, 14a, 14b) is formed between the filter and the air curtain. (3) The front side of the work surface Both A work table having air inlets (corresponding embodiments: reference numerals 7, 9a, 9b) on the side surfaces, a blower for sending air (corresponding embodiment: reference numeral 4), and air discharged from the blower is purified. A filter (corresponding embodiment: reference numeral 5a), a circulation part (corresponding embodiment: reference numeral 3) for recirculating the air sucked from the air suction port to the air blowing means side, and the side disposed on the side of the work space. Front side position corresponding to each air inlet Both A first member (corresponding example: reference numeral 20) that forms an opening connecting the working space and the outside at a position on the side surface; Both The air suction port on the side surface side and the above corresponding to the air suction port Both A second member (corresponding example: reference numerals 12a, 12b, 31a, and 32a) that has a configuration that closes either or both of the openings at the position on the side surface side and that can be attached, detached, moved, or displaced; Above work surface Both The air inlet on the side and the above corresponding to this Both Either one or both of the above-mentioned openings on the side surface side Fortress An air curtain airflow is formed between the work space and the outside by at least the air suction port on the front side of the work table surface and the opening on the front side corresponding to the air suction port. The clean air is supplied to the working space. (4) In the above (3), the second member (corresponding embodiment: reference numeral 12a) is a first portion (corresponding embodiment: reference numeral 12a) that closes the opening. ₁ , 31a) and the second portion for closing the air inlet (corresponding embodiment: reference numeral 12a) ₂ , 32a), and the two parts are interlocked. (5) In the above (4), the second member is formed of the first part (corresponding example: reference numeral 12a). ₁ ) And the second part (corresponding embodiment: reference numeral 12a) ₂ ) In an integrated configuration provided at different positions. (6) In the above (3), the second member is configured to be rotatable around a fulcrum.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 and 2 are explanatory views of a first embodiment of the present invention. FIG. 1 is an overall configuration example of a cleaning worktable device, (a) is a side sectional view, (b) is a front side external view, and FIG. 2 is a plan view of the worktable.
1 and 2, 1 is a cleaning work table device, 2 is a work table, 3 is a circulation channel, 4 is a blower, 5a and 5b are HEPA filters (High Efficiency Particulate Air Filter), 6 is a front shutter, and 7 is a front shutter. The first air suction port provided on the front side of the work table surface of the work table 2, 9 a and 9 b are the second air suction ports provided on the side surface of the work table surface of the work table 2, 8 An air outlet provided on the back side of the apparatus, 18 is a work space, 11 is below the front shutter 6 and is provided in the first air suction port 7 on the front side in the work table surface of the work table 2. The first openings 11a and 11b provided at the corresponding positions are positions on the side of the apparatus, that is, the positions of the work space for carrying in / out the object for inspection / cleaning work such as an animal breeding cage to / from the work space. Lateral The second opening 14 provided at a position corresponding to the air suction port 9a, 9b is an air curtain formed by the first opening 11 and the first air suction port 7. Airflows 14a and 14b are respectively formed by an air curtain airflow formed by the second opening 11a and the second air suction port 9a, and by the second opening 11b and the second air suction port 9b. Air curtain airflow. Reference numeral 20 denotes a member disposed on the side of the work space 18 and provided with the air outlet 8 and the second openings 11a and 11b. In such a configuration, the air from the blower 4 is transferred from the second opening 11a or 11b to the HEPA in a state in which an object for inspection / cleaning work such as an animal breeding cage is carried in / out of the work space and installed on the work table. The filter 5a is used to clean it to clean air, and the clean air 16 is supplied to the working space 18. In the work space 18, cleaning of an animal breeding cage or the like is performed by the clean air 16. Based on the flow of the clean air 16, the first opening 11 and the vicinity thereof have a first air suction port 7 provided on the front side in the work table surface of the work table 2 and the first opening 11. The air curtain air flow 14 is formed, and in the second openings 11a and 11b and in the vicinity thereof, the second air suction ports 9a and 9b provided on the side surface in the work table surface of the work table 2 and the second Air curtain airflows 14a and 14b are formed by the openings 11a and 11b. The air curtain airflow 14 passes through the first opening 11 and bacteria and the like leak from the work space 18 to the outside of the apparatus to infect the operator, or bacteria and dust outside the apparatus enter the work space 18. Is prevented. Further, the air curtain airflows 14a and 14b prevent bacteria from leaking from the work space 18 to the outside of the apparatus through the second openings 11a and 11b in order to suppress the flow of air from at least the inside of the work space 18 to the outside of the apparatus. On the contrary, bacteria and dust outside the apparatus are prevented from entering the work space 18. The air flowing through the work space 18 is sucked into the first air suction port 7 and the second air suction ports 9a and 9b of the work table 2. The sucked air flows through the circulation channel 3 and is sucked into the blower 4 again. A part of the air sucked into the blower 4 is supplied to the work space 18 again through the HEPA filter 5a, and the rest is exhausted outside the apparatus through the HEPA filter 5b. The animal breeding cage and the like are carried out of the second opening 11a or 11b after inspection and cleaning work.
According to the first embodiment, since an animal breeding cage or the like is carried into or out of the work space 18 from the second openings 11a and 11b, the workability of carrying in or carrying out can be improved. In addition, air curtain airflows 14, 14a, 14b are formed in the first opening 11 and the second openings 11a, 11b, respectively, so that bacteria and the like leak outside the apparatus, and conversely bacteria and dust from the outside. Or the like can be prevented from entering the work space 18, and safe work can be performed.
[0006]
FIG. 3 is an explanatory diagram of the second embodiment of the present invention. FIG. 3A is a cross-sectional view of the configuration around the work space of the cleaning worktable apparatus as seen from the front side of the apparatus, and FIG. 3B is an enlarged view of a portion A in FIG.
The present embodiment is a configuration example including a member that closes both the air suction port on the side surface side of the work table surface and the opening corresponding to the air suction port.
In FIG. 3, 2 is a work table, 5a is a HEPA filter, 9a and 9b are second air inlets provided on the side of the work table surface of the work table 2 (the front side of the work table 2 in the work table surface). 10 is an object for inspection / cleaning work such as an animal breeding cage, 18 is a work space, and 11 is a front surface in the work table surface of the work table 2. The first openings 11a and 11b provided at positions corresponding to the first air suction ports on the side carry in / out the object 10 for inspection / cleaning work such as an animal breeding cage to / from the work space 18 Therefore, a second opening 12a provided at a position corresponding to the air inlets 9a and 9b on the side of the apparatus, that is, on the side of the working space 18 is the second opening. For closing the portion 11a and the second air inlet 9a. 12b is a member for closing the second opening 11b and the second air suction port 9b, and 14a is the second opening 11a and the second member when the member 12a is not attached to the apparatus. An air curtain air flow 14b formed by the air suction port 9a is an air curtain air flow formed by the second opening 11b and the second air suction port 9b when the member 12b is not attached to the apparatus. In the present embodiment, each of the members 12a and 12b has an L-shaped cross section, and has a configuration that can be moved or detached with respect to the apparatus. After the object 10 for inspection and cleaning work such as an animal breeding cage is carried into the work space 18, the member 12a is mounted on the apparatus as shown in (b), and the second opening 11a and the second air suction are installed. Close the mouth 9a. Similarly to this, the member 12b is also attached to the apparatus and closes the second opening 11b and the second air suction port 9b. 12a which forms L shape in member 12a ₁ , 12a ₂ These parts are provided integrally. Part 12a ₁ Closes the second opening 11a and forms part 12a ₂ Closes the second air inlet 9a. Further, the member 12b has an L-shape 12b ₁ , 12b ₂ These parts are provided integrally. Part 12b ₁ Closes the second opening 11b and has a portion 12b ₂ Closes the second air inlet 9b. Thus, the member 12a closes the second opening 11a and the second air suction port 9a, and the member 12b closes the second opening 11b and the second air suction port 9b. The airflows 14 a and 14 b are not formed, and the clean air in the work space 18 flows using the flow path from the central portion of the work space 18 to the region of the first air suction port 7 as the main flow path. Regardless of whether or not the members 12a and 12b are mounted, an air curtain airflow is formed on the first opening side by the first opening and the first air suction port. . Reference numeral 20 denotes a member that is disposed on the side of the work space 18 and is provided with at least the second openings 11a and 11b. In such a configuration, the object 12a, 12b is mounted on the apparatus after the object for inspection / cleaning work such as an animal breeding cage is loaded into / unloaded from the second opening 11a or 11b and placed on the work table. Then, the second opening 11a, the second air suction port 9a, the second opening 11b, and the second air suction port 9b are closed. In this state, the air exiting from the blower (not shown) is cleaned by the HEPA filter 5 a to obtain clean air, and the clean air is supplied into the work space 18. In the working space 18, the animal breeding cage and the like are cleaned by the clean air. Based on the flow of clean air, the first opening 11 and the vicinity thereof have a first air suction port provided on the front side of the work table surface of the work table 2 and the first opening 11 to provide air. A curtain airflow 14 is formed. The air curtain airflow 14 causes bacteria or the like to leak from the work space 18 to the outside of the apparatus through the first opening portion 11 to infect the worker, or bacteria outside the apparatus enter the work space 18. To prevent. The air flowing through the work space 18 is sucked into the first air suction port of the work table 2. The sucked air flows through the circulation channel 3 and is sucked into the blower again. Part of the air sucked into the blower is supplied to the work space 18 again through the HEPA filter 5a, and the rest is exhausted outside the apparatus through another HEPA filter (not shown). After the inspection / cleaning operation, the mounted state of the members 12a, 12b is released, and the object 10 for inspection / cleaning operation such as an animal breeding cage is carried out of the apparatus from the second opening 11a or 11b.
According to the second embodiment, as in the case of the first embodiment, an animal breeding cage or the like is carried into or out of the work space from the second openings 11a and 11b. Workability can be improved. Further, at the time of inspection / cleaning work, since the second openings 11a and 11b and the second air suction ports 9a and 9b are closed, bacteria and the like pass through the second openings 11a and 11b. Is prevented from leaking to the outside of the apparatus or bacteria or the like from entering the apparatus from the outside of the apparatus, and the air flow in the work space 18 is made free from stagnation and local flow velocity reduction. Therefore, the cleaning efficiency can be increased. For this reason, hygienic safety and efficient work can be performed.
In the second embodiment, the second opening 11a and the second air suction port 9a, and the second opening 11b and the second air suction port 9b are closed. The second opening 11a and the second air suction port 9a and the second opening 11b and the second air suction port 9b may be closed, or the second opening It is good also as a structure which block | closes any one of the part 11a and the 2nd air suction inlet 9a, or the 2nd opening part 11b and the 2nd air suction inlet 9b, the 2nd opening part 11a, 2nd air It is good also as a structure which block | closes any of the suction inlet 9a, the 2nd opening part 11b, and the 2nd air suction inlet 9b.
[0007]
FIG. 4 is an explanatory diagram of the third embodiment of the present invention. FIG. 4 shows a peripheral configuration of the opening corresponding to the air suction port on the side surface side of the work table.
Similarly to the second embodiment, this embodiment is a configuration example in the case where both the air suction port on the side surface side of the work table surface and the opening corresponding to the air suction port are closed. The third embodiment has a configuration in which a member that closes the air suction port on the side surface of the work table surface and a member that closes the opening corresponding to the air suction port are rotated and displaced around a fixed fulcrum. This is an example.
In FIG. 4, 2 is a work table, and 9a is a second air suction port provided on one side surface in the work table surface of the work table 2 (the other side surface in the work table surface of the work table 2 is already on the other side surface side. One second air suction port is provided, and the first air suction port is provided on the front side of the work table surface of the work table 2), 18 is a work space, and 11 a is for animal breeding. In order to carry in / out an object to be inspected / cleaned such as a cage (not shown) to / from the work space 18, it is located on the side of the apparatus, that is, on the side of the work space 18, at the air inlet 9 a. A second opening provided at a corresponding position (another second opening is provided at a position corresponding to the other second air suction port on the other side of the work table surface of the work table 2). 31a is the second opening by rotational displacement. 11a is a member that closes and opens 11a, 33a is a fulcrum when the member 31a is rotationally displaced, 32a is a member that closes and opens the second air suction port 9a by rotational displacement, and 34a is , A fulcrum when the member 32a is rotationally displaced, 40 is a stopper for positioning the member 31a, and 41 is a stopper for positioning the member 32a. It is assumed that the member 31a and the member 32a are rotationally displaced in conjunction with each other. The same applies to the other second air inlet provided on the other side of the work table surface of the work table 2 and the other second opening provided corresponding thereto. When an object (not shown) for inspection / cleaning work such as an animal breeding cage is carried into or out of the work space 18, the second opening 11a and others are opened and the second opening is opened. The carrying-in work is performed, and after the carrying-in work, the members 31a, 32a and the like are rotationally displaced in conjunction with each other to close the second opening 11a and the like and the second suction port 9a and the like. The configuration and operation of other parts in the third embodiment are the same as those in the second embodiment. As described above, the members 31a, 32a and the like block the second opening and the second air suction port, so that the air curtain airflow is not formed in the second opening and the vicinity thereof, and the inside of the work space 18 is not formed. The clean air flows at a flow path from the central portion of the work space 18 to the region of the first air suction port as a main flow path. Regardless of the rotational positions of the members 31a, 32a, etc., the first opening portion side of the front surface side of the work table surface has an air curtain airflow by the first opening portion and the first air suction port. Is formed. The configuration and operation of other parts in the third embodiment are the same as those in the second embodiment. In such a configuration, after the object for inspection / cleaning work such as an animal breeding cage is loaded and unloaded into the work space from the second opening and placed on the work table, the members 31a and 32a are rotated and displaced, The second opening 11a and the like and the second air inlet 9a and the like are closed. In this state, air from a blower (not shown) is cleaned with a HEPA filter (not shown) to obtain clean air, and the clean air is supplied into the work space 18. In the work space 18, work is performed in an environment supplied with the clean air. Based on the flow of clean air, an air curtain is formed by the first air inlet and the first opening 11 provided on the front side of the work table surface of the work table 2 in the vicinity of the first opening. An air flow is formed. The formed air curtain airflow causes bacteria and the like to leak from the work space 18 to the outside of the apparatus through the first opening, and the worker is infected, or bacteria outside the apparatus enter the work space 18. Is prevented. The air flowing through the work space 18 is sucked into the first air suction port of the work table 2. The sucked air flows through the circulation channel 3 and is sucked into the blower again. Part of the air sucked into the blower is supplied to the work space 18 again through the HEPA filter, and the rest is exhausted outside the apparatus through another HEPA filter (not shown). After the inspection / cleaning work, the members 31a, etc., 32a, etc. are rotated and displaced, the second opening and the second suction port are opened, and the object for inspection / cleaning work such as an animal breeding cage is It is carried out of the apparatus from the other two openings 11a.
According to the third embodiment, since the animal breeding cage or the like is carried into or out of the work space from the second opening, the workability of carrying in or carrying out can be improved. Similarly to the case of the second embodiment, during the inspection / cleaning operation, the second opening and the second air suction port are closed so that the bacteria can pass through the second opening. Can be prevented from leaking to the outside of the apparatus or bacteria from entering the apparatus from the outside of the apparatus, preventing infection, and the air flow in the working space 18 can be reduced by stagnation and local flow velocity reduction. Since it can be made into the state which does not exist, it becomes possible to improve cleaning efficiency. For this reason, it is possible to perform hygienic, safe and efficient work.
In the configuration of the third embodiment, the second opening 11a and the second air inlet 9a, and the other second opening and the other second air inlet are closed. However, the second opening 11a and the second air suction port 9a, or the other second opening 11b and the other second air suction port may be closed. Then, without interlocking the members 31a, 32a, etc., one of the second opening 11a and the second air suction port 9a, the other second opening, and the other second air suction It is good also as a structure which plugs up any one of opening | mouths, and it is good also as 2nd opening part 11a, 2nd air suction inlet 9a, the other 2nd opening part 11b, and the other 2nd air suction inlet 9b. It is good also as a structure etc. which block any.
[0008]
Moreover, in each said Example structure, it was set as the structure which consists of one opening each as 1st, 2nd opening part, but this invention is not limited to this, Each opening part or a thing of a part It is good also as a structure which consists of several opening. In each of the above embodiments, the HEPA filter is used for air purification. However, the present invention is not limited to this. For example, an ULPA filter (Ultra Low Penetration Air Filter) may be used. . In addition, the structure for closing the second openings 11a and 11b and the second air suction ports 9a and 9b is not limited to the one that forms a completely closed state. The structure which has the space | gap part to pass may be sufficient.
[0009]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the clean worktable apparatus in which a sanitary and safe operation | work is possible can be provided. It is possible to improve workability when the inspection / cleaning work object is carried into or out of the cleaning worktable device.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of the present invention.
FIG. 2 is a plan view of a workbench in the first embodiment of the present invention.
FIG. 3 is a diagram showing a second embodiment of the present invention.
FIG. 4 is a diagram showing a third embodiment of the present invention.
FIG. 5 is a diagram illustrating a conventional configuration example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 1 '... Clean work table apparatus, 2, 2' ... Work table, 2a ... Work table surface, 3, 3 '... Circulation flow path, 4, 4' ... Blower, 5a, 5b, 5a ', 5b' ... HEPA Filter, 6, 6 '... Front shutter, 7 ... First air inlet, 8, 8' ... Air outlet, 9a, 9b ... Second air inlet, 11 ... First opening, 11a, 11b ... 2nd opening part, 12a, 12b, 31a, 32a ... Member, 14, 14a, 14b, 14 '... Air curtain airflow, 16, 16' ... Clean air, 18, 18 '... Work space.

Claims

A clean workbench device having a configuration in which clean air is supplied to a work space above the workbench,
The work table has a first air suction port at a first position on the front surface side in the work table surface, and a second air suction port at a second position on both side surfaces,
A first opening connecting the work space and the outside is formed at a position corresponding to the first position at a position on a side of the work space, and at a position corresponding to the second position. A second opening is formed;
The combination of the first air suction port and the first opening and the combination of the second air suction port and the second opening allow air to flow between the work space and the outside. A cleaning worktable device characterized by having a configuration that forms a curtain airflow.

A clean workbench device having a configuration in which clean air is supplied to a work space above the workbench,
A workbench having air suction ports on the front side and both sides of the workbench surface,
A blower that sends air;
A filter for purifying air from the blower;
A circulation part for recirculating the air sucked from the air suction port to the air blowing means side;
A member that is arranged on a side of the work space and that forms an opening that connects the work space and the outside at a position on the front surface side and a position on both side surfaces corresponding to the air suction ports;
And a clean air structure that supplies clean air from the filter to the work space in a state where an air curtain airflow is formed between the work space and the outside by the air suction ports and the opening. Workbench equipment.

A clean workbench device having a configuration in which clean air is supplied to a work space above the workbench,
A workbench having air suction ports on the front side and both sides of the workbench surface,
A blower that sends air;
A filter for purifying air from the blower;
A circulation part for recirculating the air sucked from the air suction port to the air blowing means side;
A first member that is disposed on a side of the work space and that forms an opening that connects the work space and the outside at a position on the front surface side and a position on both side surfaces corresponding to the air suction ports; ,
It has a configuration that closes one or both of the air suction port on both sides of the work table surface and the opening on the both side surfaces corresponding to the air suction port, and is detachable, movable or displaceable A second member;
The provided, busy technique either or both of the opening positions of both side surfaces of the both side surfaces of the air inlet and corresponding thereto the worktable surface, at least, the front side of the work table surface A configuration in which an air curtain airflow is formed between the work space and the outside by the air suction port and the opening portion corresponding to the front side, and clean air is supplied from the filter to the work space. A clean work bench device.

The said 2nd member is equipped with the 1st part which block | closes the said opening part, and the 2nd part which block | closes the said air inlet, A structure which these 1st, 2nd parts interlock | cooperate with. Clean work bench equipment.

The cleaning worktable device according to claim 4, wherein the second member has an integrated structure in which the first part and the second part are provided at different positions.

The cleaning worktable device according to claim 3, wherein the second member is configured to be rotatable around a fulcrum.