JPH07260112A - Hand burner - Google Patents

Abstract

PURPOSE:To obtain a hand burner having a large heat generating capacity and suitable for quick and high-temperature heating. CONSTITUTION:A grip pipe 11 is provided downward projecting from the vicinity of the rear end of a tubular burner main body, whose fore end is opened and rear end is blockaded, a metallic gas supplying tube 48 is connected to the rear dnd of the burner main body 10, a gas cock 5 is arranged in the gas supplying tube 48, the gas supplying tube 48 is laid along the grip pipe 11 and a flexible air supplying pipe, taken out of an air supplying fan, is connected to the lower end of the grip pipe 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand burner of a type that an operator holds in his hand, and more particularly to a blast type hand burner.

[0002]

2. Description of the Related Art Hand burners of this type include, for example, those used for road paving work. As a conventional hand burner of this kind, a Bunsen type is used, so that the burner body having a grip portion is supplied with gas from a gas supply source such as a gas cylinder through a flexible gas pipe. Has become.

Since the Bunsen type hand burner burns gas by utilizing the air sucked when the fuel gas is ejected into the atmosphere, it can obtain a large amount of heat generation like a blast type burner. However, there is a problem that a work requiring rapid and high temperature heating cannot be performed as in the case of adjusting the shape of a metal screw plate in a small boat, for example.

The present invention has been made in view of the above points, and provides a "hand burner of a type that an operator holds in his hand", which has a large heat generating ability and is suitable for rapid and high temperature heating. The task is to be able to do so.

[0005]

[Technical Means] A technical means for solving the above-mentioned problems is "a cylindrical burner body having a front end opened and a rear end closed.
(10) The gripping pipe (11) is projected downward from the vicinity of the rear end of the burner main body (10), the metal gas supply pipe (48) is connected to the rear end of the burner body (10), and the upstream end thereof is used as a gas connecting portion. Gas supply pipe (4
Gas cock (5) is installed in 8) and the gas supply pipe (48)
Is run along the grip pipe (11), and the lower end portion of the grip pipe (11) is used as a connection portion of a flexible air supply pipe pulled out from the air supply fan. ”

[0006]

The above technical means operates as follows. An air supply fan connected to the gripping pipe (11) via a flexible air supply pipe is placed on the floor surface of the work place, etc., and the gripping pipe (11) and the gas supply pipe (48) portion running along the gripping pipe (11) are connected. Use by holding it in your hand.

When the gas is supplied from the gas pipe and the air supply fan is operated to supply the fuel gas and the combustion air to the burner body, the gas supplied from the gas pipe is supplied to the gas supply pipe (4
It is supplied to the rear end of the burner body (10) via 8), and
Air supply from the air supply fan is supplied from the lower end of the grip pipe (11) and flows into the burner body (10). Then, these gases and air are mixed in the burner main body at a predetermined ratio, and the mixed gas is supplied to the downstream end of the burner main body and blast-combusted in this portion.

[0008]

[Effect] The present invention has the following unique effects. Since the mixed gas of the fuel gas from the gas pipe and the air from the air supply fan is produced and blast-combusted, a hand burner having a large heat generation capacity and suitable for rapid and high temperature heating can be obtained.

A flexible air supply pipe is provided at the lower end of the grip pipe (11).
Since the (20) is connected, the air supply pipe (20) extends from the lower side of the operator's hand to the upstream side. Therefore, for example, the grip pipe (11) is made solid, and the air supply pipe (2) is connected to the upper part of the three-way joint (12) such as the air supply pipe (20).
There is an advantage that 0) does not hinder the heating work.

[0010]

EXAMPLES Next, examples of the present invention described above will be explained.
The hand burner of the embodiment of the present invention comprises a burner body (10) extending in the horizontal direction and a gripping pipe protruding downward from the vicinity of the rear end thereof.
(11) and a gas supply pipe (48) for supplying gas to the rear end of the burner body (10).

The burner body (10) is composed of a flame ejection pipe (6) horizontally connected, a connection pipe (60) and a three-way joint (12). The vertical pipe (of the three-way joint (12) ( 121)
The gripping pipe (11) is connected to the lower end of the gripping pipe (11) and serves as an air supply connection port (110). Then, the air supply connection port (11
The air supply pipe (20) drawn from the air supply fan (2) is connected to (0).

Further, the horizontal pipe (12) that constitutes the three-way joint (12) is
The gas nozzle (4) is screwed and fixed to the rear end of the (0) using a screw-in cylinder (40) located at the base end thereof. Further, the screw-in cylinder (40) is provided with a gas ejection pipe (41) projecting forward therefrom, and the tip of the gas ejection pipe (41) is provided in a vertical direction and a direction perpendicular thereto. There are four gas ejection holes (44) (44) that open toward each other, and the gas ejection holes (44) (44) are formed in the gas flow path (46) formed from the screw-in cylinder (40). ) Is located at the downstream end. In addition, the threaded cylinder (4
A female screw (400) is engraved on the inner periphery on the upstream end side of (0), and a metal (copper in this embodiment) gas is made through the pipe joint (47) on the female screw (400). The supply pipe (48) is connected and a gas cock is provided in the middle of the gas supply pipe (48).
(5) is provided. A flexible pipe (K) such as a gas rubber pipe is connected to the gas connecting portion (49) located at the upstream end of the gas supply pipe (48), and the gas supply pipe (48) is It is curved so as to travel along the grip pipe (11).

Further, the gas nozzle (4) and the grip pipe (1
Connecting pipe (60) at the end of the three-way joint (12) to which 1) is connected
The flame ejection pipe (6) connected through the end of the flame ejection pipe (6) spreads like a funnel. In addition, a pair of hits (61) (61) project at the tip of the flame jet pipe (6) to prevent the tip of the flame jet pipe (6) from directly contacting the object to be heated. is doing.

In this case, the gripping pipe (11) and the gas supply pipe (48) running along the gripping pipe (11) are held in the hand and used, and the gripping pipe (11) and the like are held. Turn on the power switch (not shown) to activate the air supply fan (2) and open the gas cock (5). Then, the air supplied from the air supply fan (2) is supplied to the air supply pipe (20) → the grip pipe.
(11) → Three-way fitting (12) → Connection pipe (60) → Flame ejection pipe
The gas supplied from the gas cock (5) flows along with (6), and the gas supply pipe (48) → pipe fitting (47) → gas nozzle (4) →
It flows from the connecting pipe (60) to the flame jet pipe (6). And
In this case, since the gas ejection holes (44) (44) of the gas nozzle (4) are oriented in the direction orthogonal to the axis of the burner body (10), the gas ejected from the gas ejection holes (44) (44) Flow is an air supply fan
It becomes non-parallel to the flow of air supplied from (2), and these gases and air are efficiently mixed. Then, the air and gas supplied to the burner body (10) are mixed at the downstream side portions of both the grip pipe (11) and the gas nozzle (4) and are jetted from the flame jet pipe (6). Therefore, when the air-gas mixture jetted from the flame jet pipe (6) is ignited, it burns, and the flame generated during the combustion heats the screw blades for small boats to adjust the shape thereof. I do. In this case, the flame jet pipe (6)
Since the abutment (61) (61) is projected at the tip of the tip, the tip (62) of the flame jet pipe (6) does not directly contact with the object to be heated such as the screw blade and the tip (62). ) And the object to be heated, an appropriate interval can be secured, and the amount of air supplied by the air supply fan (2) does not drop extremely, and the combustion failure can be prevented.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

[Explanation of symbols]

 (10) ・ ・ ・ Burner body (2) ・ ・ ・ Air supply fan (4) ・ ・ ・ Gas nozzle (11) ・ ・ ・ Grip pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masatake Takeshi 4-1-2, Hirano-cho, Chuo-ku, Osaka City Osaka Gas Co., Ltd.

Claims (3)

[Claims] 1. A hand burner of a type that an operator holds in his / her hand and uses a gripping pipe (11) from the vicinity of the rear end of a cylindrical burner body (10) whose front end is open and whose rear end is closed. The metal gas supply pipe (48) is connected to the rear end of the burner main body (10) and the upstream end of the burner main body (10) is used as a gas connecting portion, and the gas cock (5) is arranged in the gas supply pipe (48). In addition, the gas supply pipe (48) is run along the grip pipe (11), and the lower end of the grip pipe (11) is pulled out from the air supply fan. And a hand burner. 2. The contact (61) protruding forward is provided at the tip of the flame ejection portion of the burner body.
Hand burner. 3. A gas nozzle (4) for ejecting the gas supplied to the burner main body (10) to a flow path side downstream from the connecting portion between the gripping pipe (11) and the burner main body (10), and the gas nozzle. The hand burner according to claim 1 or 2, wherein the gas ejection hole (44) at the tip of (4) is opened in a direction perpendicular to the axis of the burner body (10).