JPH0449455Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a movable structure for a catalyst that purifies exhaust gas from an open combustor.

[Conventional technology]

There is a proposal to use a catalyst to decompose incompletely combusted gas as a deodorizing measure for open oil combustors. This catalyst acts as a resistance to the passage of combustion exhaust gas, and because it is constantly exposed to combustion heat and deteriorates quickly if the temperature rises, it is usually installed away from the burner, and much of the incomplete combustion gas passes through the catalyst. It is released without passing through.

The applicant is Japanese Patent Application No. 60-41612 and Japanese Patent Application No. 61-53496.
In order to prevent odor during fire extinguishing, the authors proposed that the catalyst plate be brought closer to the burner during fire extinguishing operations so that the incompletely combusted gas during extinguishing always passes through the catalyst.

[Problem that the invention attempts to solve]

By the way, the force that moves the catalyst is generated by the rotational force of the shaft that controls the amount of combustion and extinguishes the fire, which increases the operating force.Also, it is difficult to stop the movement of the catalyst plate without hitting the burner, which causes the gas to stop when extinguishing the burner. It was easy to make abnormal noises.

[Means for solving problems]

This idea is intended to improve the above problems. 1 is a burner consisting of a double-tube combustion tube, 2 is an upper opening for discharging the exhaust gas of burner 1, and 3 is located above the upper opening 2. This is a catalyst mounting plate facing the upper opening 2 so as to be movable up and down. 4 is a fire extinguishing operation shaft consisting of a soot wick up and down shaft that operates the combustion wick up and down relative to the burner 1; 5 is a push-up cam fixed to the extinguishing operation shaft 4;
Reference numeral 6 denotes a push-up lever that rotates around a support shaft 7 provided near the fire-extinguishing operation shaft 4. The push-up lever 6 contacts the push-up cam 5, and when the fire-extinguishing operation shaft 4 rotates, the push-up lever 6 also rotates on the support shaft. Rotates around 7.

8 is an interlocking rod interposed between the catalyst mounting plate 3 and the push-up lever 6; 10 is a guide attached to the combustor frame 9; the interlocking rod 8 is slidably held by the guide 10; When the push-up lever 6 rotates, the end of the push-up lever 6 guides the interlocking rod 8 into the guide 1.
0 to move the catalyst mounting plate 3 to a position away from the upper opening 2 of the burner 1. Further, when the extinguishing operation shaft 4 rotates and the end of the push-up lever 6 is lowered, the interlocking rod 8 is also lowered, bringing the catalyst mounting plate 3 into close contact with or approaching the upper opening 2 of the burner 1.

Numeral 11 is a coil spring installed between the interlocking rod 8 and the combustor frame 9, and the coil spring 11 biases upward force so as to offset the gravity of the interlocking rod 8 and the catalyst mounting plate 3. When the catalyst mounting plate 3 is positioned near the upper opening 2, the gravity of the interlocking rod 8 and the catalyst mounting plate 3 is set to slightly exceed the force of the coil spring 11, so that when the end of the push-up lever 6 is lowered. The catalyst mounting plate 3 can surely close the upper opening 2.

Reference numeral 12 designates a leaf spring whose one end is attached to the interlocking rod 8 with the interlocking rod 8 running along it. Since the spring 12 is installed at a position where it is always in contact with the guide 10, when the interlocking rod 8 slides, the spring 12 is attached to the guide 10 and the chevron-shaped bent portion 12'.
comes into contact.

[Explanation of action]

In this device having the configuration described above, when the extinguishing operation shaft 4 is rotated in the set direction, the push-up cam 5 is moved to the push-up lever 6.
is moved upward, and the end of the push-up lever 6 comes into contact with the interlocking rod 8, causing it to slide upward. The catalyst mounting plate 3 is moved in a direction away from the upper opening 2 of the burner 1 by the interlocking rod 8, and the combustion exhaust gas is discharged from between the upper opening 2 and the catalyst mounting plate 3.

In this invention, a coil spring 11 is attached to reduce the force pushing up the catalyst mounting plate 3 and the interlocking rod 8, and most of the weight of the catalyst mounting plate 3 and the interlocking rod 8 is supported by the coil spring 11. Therefore, the push-up lever 6 can now drive the catalyst mounting plate 3 with a light force.

On the other hand, when rotating the extinguishing operation shaft 4 to extinguish the fire,
The push-up lever 6 in contact with the push-up cam 5 rotates downward, and the catalyst mounting plate 3 and interlocking rod 8 descend to close the upper opening 2 of the burner 1. For this reason, all the incomplete combustion gas generated from the burner 1 during extinguishing passes through the catalyst on the catalyst mounting plate 3 and is discharged, and the incomplete combustion gas decomposes and becomes odorless, thereby preventing the bad odor that occurs when extinguishing. I was able to do that.

By the way, the catalyst mounting plate 3 and the interlocking rod 8 that are balanced with the coil spring 11 compress the coil spring 11 at a position where the catalyst mounting plate 3 is away from the burner 1, and the coil spring 11 causes the interlocking rod 8 and the catalyst mounting plate 3 to be compressed. The supporting force is at its weakest. For this reason, when the push-up lever 6 is lowered, the interlocking rod 8 and the catalyst mounting plate 3 approach the upper opening 2 at a high speed while stretching the coil spring 11, and the contraction force of the coil spring 11 and the interlocking rod 8 and the catalyst mounting plate Even if the catalyst mounting plate 3 is set so that it is balanced near the upper opening 2, the catalyst mounting plate 3 strongly collides with the upper opening 2 due to the inertial force when moving, causing abnormal noise.

In this invention, a plate spring 12 with a chevron-shaped bent part 12' is attached along the interlocking rod 8, so that when the push-up lever 6 is lowered and the catalyst mounting plate 3 approaches the burner 1, the guide 10 is attached to the plate spring 12. chevron bend part 1
Since it descends while crushing 2', the catalyst mounting plate 3
begins to descend slowly, generating almost no inertial force when descending, and as it approaches the burner 1, the coil spring 11 stretches and generates a strong contractile force, which balances the catalyst mounting plate 3 and interlocking rod 8. Therefore, the upper opening of the burner 1 can now be quietly closed off with the catalyst mounting plate 3.

[Explanation of effects]

As described above, the coil spring 11 is attached to the interlocking rod 8 to apply upward force, and the angle-shaped bent portion 1
Since the leaf spring 12 with 2' is attached to the interlocking rod 8,
The force required to start moving the catalyst mounting plate 3 upward is light and light, making it extremely easy to handle.

On the other hand, when the catalyst mounting plate 3 is lowered during a fire extinguishing operation, the plate spring 12 having the chevron-shaped bent portion 12' acts as a brake and slowly descends. When the fire became weak, the force of the coil spring could be used to reduce the speed of descent, making it possible to extinguish the fire quietly without making any loud noises.

For this reason, we have completed a practical product with a deodorizing structure based on catalyst transfer, which has not received good reviews even though it could completely prevent the odor during extinguishing due to operating force and noise issues.

[Brief explanation of the drawing]

The drawing is a cross-sectional view of this device. DESCRIPTION OF SYMBOLS 1... Burner, 2... Upper opening, 3... Catalyst mounting plate, 4... Fire extinguishing operation shaft, 5... Push-up cam, 6...
...Push-up lever, 7... Support shaft, 8... Interlocking rod, 9...
... Combustor frame body, 10 ... Guide, 11 ... Coil spring, 12 ... Leaf spring, 12 ... Chevron-shaped bent portion.

Claims (1)

[Scope of utility model registration request] The upper opening 2 through which the exhaust gas of the burner 1 is discharged is opposed to the catalyst mounting plate 3 which can be raised and lowered, and when the extinguishing operation shaft 4 rotates in the extinguishing direction, the catalyst mounting plate 3 is brought into close contact with or close to the upper opening 2. In the deodorizing device for a vessel, a push-up cam 5 attached to a fire extinguishing operation shaft 4;
A push-up lever 6 rotating around a support shaft 7 is interlocked, and an interlocking rod 8 is interposed between the push-up lever 6 and the catalyst mounting plate 3, and the interlocking rod 8 is attached to the combustor frame 9. It is slidably held by a guide 10, and a coil spring 11 that applies an upward force is attached to the interlocking rod 8, and is placed along the interlocking rod 8.
And the chevron-shaped bent part 1 so that the middle part is away from the interlocking rod 8.
2', one end of a leaf spring 12 is attached to an interlocking rod 8, and the leaf spring 12 is always slid in contact with a guide 10 that holds the interlocking rod 8.This catalyst elevating structure is for a deodorizing device for a combustor.