JPH0657426U - Draft chamber - Google Patents

Abstract

(57) [Summary] [Purpose] The air for the air curtain blown out from the air outlet provided in the front opening of the processing chamber of the draft chamber is rectified and the air is evenly flowed over the entire opening at a uniform flow rate and flow rate.
Moreover, it is possible to effectively blow the air toward the front opening of the processing chamber. [Structure] Above the front door 4 of the processing chamber 2 of the draft chamber main body 1, a blower device 10 for blowing air toward the opening of the processing chamber is provided, and a honeycomb core is formed at a blower outlet 12 of the blower device. The air rectifying member 18 is attached.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a draft chamber, and more particularly, to a draft chamber above a front door that opens and closes a front surface of a processing chamber, and to a front opening of the processing chamber in response to opening / closing operation of the front door. The present invention relates to a draft chamber provided with an air blower that blows out air.

[0002]

[Prior art]

 Usually, in the above-mentioned draft chamber, there is an air curtain outlet provided above the front opening of the processing chamber over substantially the entire width of the opening and a blower for the processing chamber communicating with the processing chamber. An air blower having an outlet is provided. When the front door is opened, the air is blown from the air curtain from the air curtain outlet when the front door is opened and closed according to the opening and closing operation of the front door that opens and closes the opening in the front of the processing chamber. The air is blown out to the opening as an air curtain, and when the front door is closed, the air is blown out only into the processing chamber to ventilate the processing chamber.

A punching panel, a wire mesh, or the like is usually attached to the air curtain outlet to prevent unevenness of the air blown from the outlet. However, in the case where a simple punching panel or wire mesh is provided at the air outlet in this way, the air from the blower blows vertically downward from the air outlet, so the air blown out works in the front side of the processing chamber. Since it just hits the experimenter and the like, the air cannot be efficiently blown out toward the front opening, and it cannot serve as an air curtain. Therefore, in order to effectively blow out the air blown out as this air curtain toward the opening in the front of the processing chamber, a gallery or the like is provided at the blowout outlet so that the blowout direction of the air is fixed. It may be considered to set it, but in the case of this louver, not only is the rectification effect not always sufficient, but the weight of metal objects is also heavy.

[0004]

[Problems to be solved by the device]

 In view of the above points, the present invention rectifies the air for the air curtain blown out from the air outlet provided in the front opening of the draft chamber and rectifies the air throughout the opening with a uniform flow velocity and flow rate. It is intended to provide a draft chamber that can be blown out and can be effectively blown toward the front opening of the processing chamber.

[0005]

[Means for Solving the Problems]

 In the draft chamber according to the present invention for achieving the above object, a blower for blowing air toward the opening is provided above the front opening of the processing chamber, and the honeycomb core is provided at the blowout port of the blower. The air rectifying member created in 1. was attached.

[0006]

[Action]

 As described above, in the draft chamber according to the present invention, the air blown from the blower to the front opening of the processing chamber passes through the air flow regulating member composed of the honeycomb core attached to the blowout port, so that the airflow is made uniform throughout. Is rectified to the flow velocity and flow rate of. In addition, the blown air can be effectively blown toward a desired direction such as the front opening portion depending on the direction of the honeycomb core.

[0007]

【Example】

 Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a side sectional view showing an embodiment of a draft chamber according to the present invention. In this draft chamber, a processing chamber 2 is provided inside a draft chamber body 1, and on the front surface of the processing chamber 2, it is possible to operate from the front side of the draft chamber body 1 in the processing chamber 2. An opening 3 is provided, and the front opening 3 is provided with a front door 4 that opens and closes the front opening 3 by moving up and down. The front door 4 is connected in a well-balanced manner to the balance weight 5 hung vertically in the interior of the processing chamber 2 by a connecting thread 6 suspended around the upper part of the draft chamber body 1, so that the front door 4 can be smoothly moved. It can be opened and closed. Further, an exhaust passage 8 communicating with the upper and lower sides of the processing chamber 2 by a partition wall 7 is provided inside the inside of the processing chamber 2, and an exhaust means connected to the exhaust passage 8 is provided above the processing chamber 2. 9 is provided so that the air in the processing chamber 2 can be exhausted to the outside together with the toxic gas and the like.

Further, above the front opening 3 of the draft chamber main body 1, there are provided an outlet 11 into the processing chamber 2 of the draft chamber main body 1, and an outlet 12 for an air curtain which faces the front opening 3. The blower 10 having the above is detachably attached to the draft chamber main body 1 either integrally with the draft chamber main body 1 or separately from the draft chamber main body 1. The air blower 10 is provided with an air supply port 13 communicating with an air supply means (not shown) at the upper part thereof. It is divided into an air curtain blower chamber 15 and a processing chamber blower chamber 16 on the back side, and only one of the both blower chambers 15 and 16 is opened at the upper part of the partition wall 14 to supply air. An opening / closing door 17 is provided to supply the air supplied from the blower chambers 15 and 16 to only one of them. An air rectifying member 18 made of a honeycomb core is provided at the air outlet 12 opened at the lower end of the air curtain blowing chamber 15.

An opening / closing door 17 provided on an upper portion of the partition wall 14 for partitioning the inside of the blower device 10 is vertically movable in a guide groove 19 provided in the processing chamber blower chamber 16 on the rear surface side of the partition wall 14. The balance weight 20 is connected to the provided balance weight 20 by an operation yarn 21. Further, the balance weight 20 is connected to a front door 4 that opens and closes the front opening 3 of the processing chamber 2 by an interlocking yarn 22. There is.

When the front door 4 closes the front opening 3, as shown in FIG. 2, for the processing chamber connecting the processing chamber air blowing chamber 16 in the air blowing device 10 to the processing chamber 2. The air outlet 11 is open. In this state, the interlocking yarn 22 connected to the front door 4 is pulled so that the balance weight 20 is located in the upper portion of the guide groove 19 and is also connected to the balance weight 20. The operating yarn 21 is further extended toward the opening / closing door 17 side connected thereto, so that the opening / closing door 17 falls forward and the air cart provided on the front side of the blower 10 from the air supply port 13. The passage to the blower chamber 15 for the air is cut off, and the passage to the blower chamber 16 for the processing chamber located on the back side is opened so that the air supplied from the air supply port 13 passes through the blower chamber 16 for the processing chamber. It is blown out only into the processing chamber 2 from the processing chamber outlet 11.

Further, when the front door 4 is pulled up and the front opening 3 is opened, as shown in FIG. 3, the processing chamber outlet 11 connecting the processing chamber blower chamber 16 in the blower device 10 to the processing chamber 2 is opened. The interlocking yarn 22 that is closed by the front door 4 and that is connected to the front door 4 is fed to the side of the balance weight 20 that is connected to the front door 4, and the balance weight 20 moves to the lower part in the guide groove 19. As the balance weight 20 descends, the operating yarn 21 connected to the balance weight 20 is pulled, and the open / close door 17 connected to the operation yarn 21 falls rearward, so that the air for the processing chamber is blown from the air supply port 13. The passage to the chamber 16 is blocked, and the passage leading from the air supply port 13 to the air curtain blower chamber 15 is opened so that the air supplied from the air supply port 13 is blown to the air curtain blower chamber 1. It is blown out toward the front opening 3 of the processing chamber 2 which is opened from the lower air curtain outlet 12 through 5.

The air blown out from the air curtain outlet 12 passes through an air rectifying member 18 made of a honeycomb core provided in the air curtain outlet 12, so that the air rectifying member is passed during this passage. .. are dispersed in a large number of openings 18a ... Of the honeycomb core, and the air velocity and the air volume are uniformly rectified throughout the air curtain outlet 12 and in a direction corresponding to the direction of the openings 18a of the honeycomb core. It is blown out evenly. Therefore, by setting the direction of the openings 18a of the honeycomb core in a predetermined direction, that is, the direction of the openings 18a of the honeycomb core toward the front opening 3 of the processing chamber 2, The air blown toward the front opening 3 of the processing chamber 2 can be surely blown toward the front opening 3 without any unevenness in blowing.

The honeycomb core is generally made of various materials such as paper, synthetic resin, and metal such as iron and aluminum. Among these, it is preferable to use a honeycomb core made of paper or a synthetic resin excellent in chemical resistance in the present invention as a honeycomb core which is cheap in manufacturing cost, good in chemical resistance and corrosion resistance, and lightweight. It can be said to be an embodiment. Further, as this paper honeycomb core, it is possible to use one which is impregnated with a phenol resin or the like and hardened, or whose surface is coated with a resin having water resistance and corrosion resistance. If such a honeycomb core made of paper is used, it has excellent chemical resistance, water resistance, and the like, and its molding can be appropriately cut and used at the installation site of the draft chamber. Even when water- and corrosion-resistant resin is used for coating, it can be treated very simply by applying these resin liquids to the cut small portion, and the construction is simple.

[0014]

[Effect of device]

 As described above, in the draft chamber according to the present invention, since the air rectifying member including the honeycomb core is provided at the outlet of the blower, the air blown out from the blower passes through the honeycomb core to blow the air. The flow rate and flow velocity are uniform across the outlet, and the air blown from the air blower is effectively directed in a predetermined direction, such as the front opening of the processing chamber in the draft chamber, depending on the direction of the honeycomb core. It can be blown out.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of a draft chamber according to the present invention.

FIG. 2 is a side sectional view of a blower device portion in the draft chamber.

FIG. 3 is a side cross-sectional view of a blower portion of the same.

[Explanation of symbols]

1 Draft chamber body 2 Processing chamber 3 Front opening 4 Front door 5 Balance weight 6 Connecting yarn 7 Partition wall 8 Exhaust passage 9 Exhaust means 10 Air blower 11 Processing chamber outlet 12 Air curtain outlet 13 Air inlet 14 Partition 15 Air curtain blowing chamber 16 Processing chamber blowing chamber 17 Opening / closing door 18 Air rectifying member 19 Guide groove 20 Balance weight 21 Operating yarn 22 Interlocking yarn

Claims (1)

[Scope of utility model registration request] 1. An air blower for blowing air toward the opening is provided above the front opening of the processing chamber, and an air rectifying member made of a honeycomb core is attached to an outlet of the air blower. Draft chamber featuring