JPS631632U

JPS631632U -

Info

Publication number: JPS631632U
Application number: JP9557386U
Authority: JP
Priority date: 1986-06-23
Filing date: 1986-06-23
Publication date: 1988-01-07
Also published as: JPH039792Y2

Description

[Brief explanation of the drawing]

第１図ないし第７図は本考案のドラフトチヤン
バの一実施例を示し、第１図は動作装置の設置部
を示す説明図、第２図は本体の横断面図、第３図
は同正面図、第４図は同平面図、第５図は動作装
置の縦断面図、第６図は第５図―線に沿う断
面図、第７図は第５図―線に沿う断面図、第
８図は扉開度と開口部風速との関係を示す線図、
第９図は扉開度と排気風量との関係を示す線図で
ある。１……ドラフトチヤンバ本体、２……処理室、
３……開口部、４……扉、８……排気通路、９…
…排気フアン、１０……電動機、１５……動作装
置、１７……チエーン、１８……重錘、３０……
速度設定器。 1 to 7 show an embodiment of the draft chamber of the present invention, FIG. 1 is an explanatory view showing the installation part of the operating device, FIG. 2 is a cross-sectional view of the main body, and FIG. 3 is the same. 4 is a plan view of the same, FIG. 5 is a longitudinal sectional view of the operating device, FIG. 6 is a sectional view taken along the line of FIG. 5, and FIG. 7 is a sectional view taken along the line of FIG. Figure 8 is a diagram showing the relationship between door opening degree and opening wind speed.
FIG. 9 is a diagram showing the relationship between the door opening degree and the exhaust air volume. 1...Draft chamber main body, 2...Processing chamber,
3...opening, 4...door, 8...exhaust passage, 9...
...Exhaust fan, 10...Electric motor, 15...Operating device, 17...Chain, 18...Weight, 30...
Speed setter.

Claims

[Scope of Claim for Utility Model Registration] (1) A draft chamber main body, a door that opens and closes the opening of the main body, an exhaust fan that exhausts the air from the main body, and a fully open position of the door at the opening of the main body. an operating device that is interlocked with the door and operates with an amount of movement corresponding to the amount of movement of the door when moving within a certain range between the door and the fully closed position; and an operating device that is driven by the operating device and moves the door within the certain range and a speed setting device that sets the rotational speed of the exhaust fan according to the degree of opening of the door, and the speed setting device has a speed setting device that sets the rotational speed of the exhaust fan to decrease as the degree of opening of the door decreases. The draft chamber is what you set. (2) The operating device consists of a rotating body that rotates in conjunction with the movement of the door, a partial gear that has teeth formed on a part of its circumference and rotates together with the rotating body, and a rotating body that rotates in conjunction with the movement of the door. The draft chamber according to claim 1, which is a registered utility model, further comprising a gear that rotates and drives a speed setting device only when the gear is engaged with the tooth portion.