JPH0412367Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an oil combustor in which a chamber for housing a wick up-and-down mechanism is provided outside the wick, and the chamber functions as a preliminary chamber for a fire extinguishing system.

[Conventional technology]

Conventionally, there is an oil combustor that has a chamber outside the wick that houses a wick up/down mechanism and uses this chamber as a preliminary chamber for a fire extinguishing system. A small hole is opened in this preliminary chamber so that outside air can flow in, and the small hole opens and closes at a certain timing in conjunction with the core up-and-down mechanism.

For example, in the event of an abnormality such as an earthquake, the core is lowered by a core up/down mechanism, and a small hole is opened at the core lowering position.On the other hand, during normal combustion, the small hole is left open.
Some have small holes that close when the core is lowered.

In the conventional small hole opening/closing mechanism, the mechanism part is installed outside the preliminary chamber, and a typical structure is as shown in Japanese Patent Publication No. 61-25962, where a cam plate is installed inside the chamber and interlocks with the core up/down mechanism. is installed, and on the outside of the preliminary chamber there are mechanical parts such as a valve stem that faces the cam plate through a small hole, a valve stem holding cylinder that holds the valve stem, and a spring that presses the valve part of the valve stem against the small hole. is installed.

[The problem that the idea aims to solve]

The conventional on-off valve structure is installed outside the room, has a large number of parts, and is extremely troublesome to assemble. In addition, due to the recent trend towards smaller equipment, the on-off valve structure installed outside the room has become an obstacle to installing other equipment close to the spare room (core upper and lower equipment storage room), which has become an obstacle to downsizing the equipment. It may happen.

[Means to solve problems]

This device incorporates an on-off valve in the preliminary chamber, and provides a chamber 3 outside the core 1 for housing the core up/down mechanism 2, and a core cylinder 5 rotated by the core up/down mechanism 2 on the core 1 side. In an oil combustor in which the core 1 is moved up and down by the rotating core cylinder 5, a small hole 4 communicating between the inside and outside of the chamber 3 is formed in the third wall, and the small hole 4 and the core are connected. A shielding plate 6 located between the cylinder 5 and the small hole 4 and in close contact with the small hole 4
The shielding plate 6 is provided with a locking part 7 on the core cylinder 5 or the shielding plate 6 to rotate together with the core cylinder 5, and a shielding plate is provided between the shielding plate 6 and the core cylinder 5. A spring 8 is provided to press the core cylinder 6 against the wall of the chamber 3, and the core cylinder 5 rotated by the core up/down mechanism 2 drives the closing plate 6 via the locking part 7 to open and close the small hole 4. .

[Effect]

When the lead up/down mechanism 2 is driven manually or automatically, the lead up/down mechanism 2 drives the lead cylinder 5, and the lead 1 moves up and down as the lead cylinder 5 rotates.

The chamber 3 housing the wick up/down mechanism 2 is provided with a small hole 4 to serve as a preliminary chamber for the fire extinguishing system, and the shielding plate 6 in close contact with the small hole 4 has a wick cylinder 5 and a locking part 7. The shielding plate 6 is also moved along the inner wall of the chamber 3 together with the core tube 5 by operating the core up/down mechanism 2. Therefore, while the blocking plate 6 is in contact with the small hole 4, the small hole 4 is closed, and the blocking plate 6 closes the small hole 4.
A small hole 4 opens at a position away from.

When the chamber 3 equipped with the small hole 4 is used as a preliminary chamber of a fire extinguishing system, there is a structure in which the small hole 4 is normally closed during combustion, and is opened when the wick is lowered and extinguished.
In this structure, during normal combustion, the chamber 3 is filled with petroleum gas vaporized from the wick 1, and when extinguishing, when the wick 1 is lowered and the small hole 4 is opened, air flows into the chamber 3 and mixes with the petroleum gas. The petroleum gas in the chamber 3 is ignited and combusted by the combustion flame of the wick 1, and the combustion flame of the wick 1 is blown away by the blast to extinguish the fire.

In addition, there is a structure in which the small hole 4 is left open during normal combustion, and the small hole 4 is closed when the wick is lowered and extinguished.This structure allows fresh air to flow from the small hole 4 through the chamber 3 toward the wick 1 during normal combustion. It is used for combustion, and chamber 3 is filled with fresh air. During extinguishing, when the wick 1 is lowered and the small hole 4 is closed, the petroleum gas and combustion gas vaporized from the upper part of the wick 1 are diffused into the chamber 3, oxygen is consumed by combustion in the chamber 3, and the area near the wick 1 is vaporized. Gas is so diluted that it cannot be combustible and extinguishes the fire in a short period of time.

〔Example〕

This invention relates to an on-off valve structure that is connected to the upper and lower parts of the core and is simple and easy to assemble.To explain the specific structure with the help of a diagram, 1 is a core inner cylinder 9 and an outer core cylinder 10.
The core held between the cores 3 and 3 is a chamber provided outside the core 1 continuously from the core outer cylinder 10, and the core up-and-down mechanism 2 is housed in the chamber 3. 5 is a core cylinder which is a component of the core vertical mechanism 2 provided on the core 1 side of the core vertical mechanism 2, 12 is a drive pin that is visible from the core 1 to the core cylinder 5, and 5' is a core cylinder provided on the core cylinder 5. Long hole, 10' is core outer cylinder 1
The long holes 5' and 10' are formed to intersect with each other, and the drive pin 12 passes through the intersection.

14 is a core vertical shaft, 14' is a pinion gear attached to the tip of the core vertical shaft 14, 13 is a rack gear attached to the core cylinder 5, and when the core vertical shaft 14 is rotated, the pinion gear 14' that meshes with the rack gear 13 rotates; Since the core tube 5 rotates together with the rack gear 13, the core 1 moves up and down.

4 is a small hole that communicates the inside and outside of chamber 3, 11 is chamber 3
and a slit communicating with the core inner/outer cylinder gaps 9 and 10,
Reference numeral 6 denotes a shielding plate that comes into close contact with the inner wall of the chamber 3 in which the small hole 4 is formed, and the shielding plate 6 has a locking part 7 between it and the core tube 5 to lock it to the core tube 5, and A spring 8 is provided between the core cylinder 5 and the shielding plate 6 to press the shielding plate 6 against the wall of the chamber 3.

Therefore, when the core vertical shaft 14 rotates and the core tube 5 rotates, the blocking plate 6 also rotates via the locking portion 7 to open and close the small hole 4.

15 is a spring holding piece attached to the shielding plate 6;
A spring 8 installed between the core tube 5 and the shielding plate 6 is prevented from falling off.

The on-off valve structure shown in the example has a small hole 4 during normal combustion.
The hole 4 is opened and the small hole 4 is closed when extinguishing a fire. This structure has the advantage that unburned gas does not leak to the outside when extinguishing a fire, unlike fire extinguishers that use deflagration in which the open and closed states are reversed, and there is little odor. However, the small holes are open during normal combustion, and if gasoline is used by mistake, gasoline vapor may flow backwards and leak through the small holes, and if this gasoline ignites, the oil combustor will instantly become engulfed in flames. There is a risk of fire.

In this design, the small hole 4 is located at the bottom of the chamber 3 and opens into the upper space of the oil tank, so even if gasoline is used by mistake, gasoline vapor will not leak outside, greatly improving safety. It is something.

〔effect〕

As described above, this invention opens and closes the wick tube 5 and the small hole 4, which are the components of the wick up/down mechanism 2, when the chamber 3 housing the wick up/down mechanism 2 is used as a spare room for a fire extinguishing system and an on-off valve is installed. Since the blocking plate 6 is configured to interlock with the locking part 7, all the parts constituting the on-off valve are connected to the chamber 3.
When the core up/down mechanism 2 is assembled, the opening/closing valve mechanism can be assembled together, making assembly extremely easy.

In addition, since the shielding plate 6 is housed in the chamber 3, and the inner wall of the chamber 3 essentially functions as a guide for the on-off valve mechanism, the only parts are the shielding plate 6 and the spring 8, so the number of parts is extremely small. , and the shielding plate 6 can be manufactured by integrally forming sheet metal, making it much easier to manufacture than the conventional structure of a valve, valve seat, and valve stem, and making it possible to significantly reduce costs. It is.

Furthermore, in this invention, the components of the on-off valve are completely removed from the outside of chamber 3, so the oil combustor parts can be mounted close to the outer wall of chamber 3, making it possible to design a compact oil combustor. be.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of this device, and FIG. 2 is a cross-sectional view thereof. 1...core, 2...core up/down mechanism, 3...chamber, 4...
...Small hole, 5... Core tube, 6... Closing plate, 7... Locking part, 8... Spring.

Claims (1)

[Scope of utility model registration request] A chamber 3 for storing a core vertical mechanism 2 is provided outside the core 1, and a core cylinder 5 that is rotated by the core vertical mechanism 2 is provided on the core 1 side in the chamber 3. In an oil combustor in which the wick 1 is moved up and down with a wick, a small hole 4 is formed in the third wall to communicate the inside and outside of the chamber 3, and a small hole 4 is located between the small hole 4 and the wick cylinder 5. A shielding plate 6 is provided in close contact with the core cylinder 5, and the shielding plate 6 is provided with a locking part 7 on the core cylinder 5 or the shielding plate 6, and rotates together with the core cylinder 5. A spring 8 for pressing the shielding plate 6 against the wall of the chamber 3 is provided between the core cylinder 5 and the shielding plate 6 through the locking part 7.
An opening/closing valve structure for an oil combustor, characterized in that it drives a small hole 4 to open and close it.