JP2008148986A - Automatic fire extinguisher arranged with release conduits on both sides of main body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive automatic fire extinguisher for a kitchen range, which can be installed to the kitchen range with a hood-fan by solving problems of a conventional extinguisher as a fire prevention countermeasure to a fire resulted from combustion of deep-frying oil which occupies a large part of causes of the kitchen fire, and allows a purchaser to easily install it. <P>SOLUTION: The fire extinguisher is constituted so as to have a compact and integrated structure, wherein short release conduits with heat sensitive nozzles are arranged on both sides around a main body container. Regardless of the place where a fire breaks out, either a left burner part or a right one, only the heat sensitive nozzle on the fire outbreak side placed above releases early, and all the extinguishing agents are released in the container concentrating on the kitchen range on the fire outbreak side. Thus, the burner parts on the right and left of the range can be protected; early operation is possible, and the extinguisher can be installed on a hood lower wall surface of the hood-fan kitchen range where the installation is relatively easy. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an automatic fire extinguisher for a range with a food fan for a kitchen.

Utility model registration No. 1194485 Utility model registration No. 1480576 Utility model registration No. 1480577 Utility model registration No. 1470328

Kitchen range automatic fire extinguishing devices are mainly targeted at ordinary houses.
In that case, the performance of a fire extinguisher required depending on the presence or absence of a hood with a fan on the target range differs, and there are some fire extinguishing devices that cannot be installed in a range with a hood fan.
In addition, a generally installed range has two left and right cooking stoves (burners) for cooking, but some conventional fire extinguishing devices are limited to a two-compartment type and one.
If a fire breaks out from a tempura oil pan etc. in the range where the hood fan is operating, the initial flame of the fire will be sucked into the hood in a relatively rod shape, and if the fire extinguisher detection unit is too far from the pan, the device Since the operation of the hood fan slows down and the fire spreads, in the case of a range with a hood fan, two heat detection units are required to match the burner positions on the left and right sides of the range. Two sensing nozzles are provided in one fire extinguishing device.

The installation location of the fire extinguisher body is roughly divided into the following three methods.
(1) The main body is fixed to the back wall above the range.
There is a short discharge conduit from the front of the main body container to the lower range, and a discharge nozzle is provided at the tip. There is one conventional discharge nozzle.
(2) The main body is installed in a space away from the range position, a discharge pipe such as a copper pipe extending from the main body container is laid up to the upper part of the range, and the discharge nozzle provided at the tip of the discharge conduit is directed to the range surface and the rear wall Some are fixed to the other, and others are connected to a discharge nozzle provided in the hood.
There are one type and two types of discharge nozzles, and those having two discharge nozzles are installed in the hood.
(3) A pipe-shaped body is mounted horizontally in the hood.
Install in the hood so that the two discharge nozzles directly connected to the main body in the vertical downward direction match the burner positions on the left and right of the lower surface range.

FIG. 14 shows a conventional product installed on the rear wall of the range, which is a device attached to the range without a hood and for a single burner. In order to protect the left and right burners, two fire extinguishing devices must be provided as shown in FIG.
Fig. 15 shows a fire extinguishing device that is placed on the back wall that covers the entire range, with a single discharge nozzle with a wide protection range at the center of the range. Therefore, compared with the case where one burner is targeted, the amount of the drug is required to be about three times larger and the main body container becomes larger. In addition, since the heat sensing nozzle moves away from just above the burner, the operation speed is slow, and there is a disadvantage that it cannot be used for a range with a hood fan.
FIG. 16 shows a main body separation type in which a discharge conduit extending from a main body disposed in a storage space or the like away from the range is connected to two discharge nozzles provided in the hood.
FIG. 17 shows an automatic fire extinguisher for a range with a hood fan in which two right and left discharge nozzles are directly attached to a main body facing a vertically downward range burner portion in a pipe-shaped container, and is a type that is housed in a hood.
Each of the discharge nozzles of FIGS. 14 to 17 has a structure in which pressure is accumulated up to the tip.
The nozzle port loaded with the internal pressure is directly airtightly held by a heat sensing plate via an easily meltable metal (constant temperature soldering), and a plug 20 equipped with an O-ring or the like built in the nozzle port as shown in FIG. Thus, any structure of the method in which the heat sensing plate 5 through the easily meltable metal 22 presses the sealing plug 20 from the outside is maintained.
When a fire breaks out from a tempura oil pan or the like of the range, the heat sensing plate 5 becomes hot due to the flame, and the easily meltable metal 22 joining the tip of the nozzle 4 and the heat sensing plate is melted to cause the heat sensing plate 5 to melt. Falls, the nozzle opening 4 opens, and the fire extinguishing agent is released by the accumulated pressure.
In this description, as shown in FIG. 13, a combination of a discharge nozzle and a heat sensing plate provided in an automatic fire extinguishing device for a pressure accumulating main body container is referred to as a heat sensing nozzle.
This nozzle structure also has reliability such as airtightness, operation performance, and sensing performance, and is also adopted in FIG.

As a fire prevention measure such as tempura oil fire, which accounts for most of the causes of kitchen fires, it can solve the problems of conventional products and can be installed in a range with a hood fan, easy to install by the purchaser, and low cost An automatic fire extinguishing device for range is provided.
That is, the problems to be solved in the conventional product are as follows.
14 and 15 can install the main body container on the wall, but the conventional product has one heat sensing nozzle for one main body, so the burner fire on the left and right of the range with the hood fan Cannot be protected. There is a need for a device that can be mounted on the wall of the upper part of the range and that can handle a range with a hood fan.
FIG. 16 shows a conventional type in which the main body is provided in a storage space near the hood, and the main body and the heat sensing nozzle are connected by a relatively long discharge conduit.
Piping work by a contractor is necessary, and installation by a general purchaser is difficult.
Fig. 17 shows the installation method of the conventional type in the hood. Since the hood width is 60cm, 90cm, 120cm, etc., the inside of the hood can be obtained by combining several types of adjustment pipes with different accessory lengths. The entire length of the main body is matched to the width, mounting brackets are provided at both ends, and it is fixed by a method using the folded parts on the left and right sides of the hood.
However, depending on the diversifying hood shapes, hoods that do not turn back and standard-shaped accessory fittings may not be used, so in order to securely fix the main body, drilling or other processing is required on the hood surface. There is also a need for construction by contractors. Installation may not be possible depending on the shape of the filter in the hood.

A compact fire-extinguishing system with a short discharge conduit with heat-sensitive nozzles on the left and right, centering on the main body container.
No matter which of the burners on the left and right sides of the range fires, only the fire-side heat detection nozzle located at the top opens early, and all the fire-extinguishing agent in the container is concentrated and discharged to the fire-side range. Thus, the burner part on the left and right of the range can be protected, and can be installed on the lower hood wall of the range with a hood fan that can be operated early and is relatively easy to install.

1. By adopting a structure in which discharge nozzles are provided on the left and right sides of the main body container, an automatic fire extinguisher for a range with a hood fan that exhibits a fire extinguishing effect in the initial stage even if a fire breaks out from either the left or right burner of the range.
2. Compared with the conventional wall-mounted type, a small amount of extinguishing agent is required, and a small and lightweight main body container, a discharge conduit, and a heat sensing nozzle are compactly integrated, and can be installed on the lower hood wall.
3. The wall part under the hood is often an empty space and is suitable for the location where the fire extinguishing device is installed. Compared to installation inside a narrow hood, workability is better and there is less hindrance to daily cleaning of the hood after installation.
4). Because the weight can be reduced, it is possible to fix the main body container with a strong adhesive etc. on the wall surface made of stainless steel plate or tile, and if the back of the range is a wall structure kitchen, no drilling tools etc. are required, and general buyers can Can be installed.

  Hereinafter, the present invention will be described with reference to embodiments shown in the drawings, but the present invention is not limited thereto.

1 (a), (b), and (c) are views showing claim 1, and a branch holder 2 provided at the upper portion of the pressure accumulating main body container 1 includes a fire extinguisher indicating pressure gauge 6, a pressure inlet 7, and a figure. In addition to providing an operation signal output pressure switch (not shown), the extinguishing agent discharge passage is divided into two directions inside, and the extinguishing agent is released downward to the tip of the discharge conduit 3 attached to the left and right. A discharge nozzle 4 with a heat sensing plate 5 is arranged.
These fire extinguishing devices are installed on the lower wall surface of the hood 12 as shown in FIG. 9, and the main body container is installed on the back wall at the center of the range width, so that the left and right radiating nozzles 4 are respectively left and right burners 14 of the range 13. It is arranged toward.
Therefore, the discharge nozzle 4 with the heat sensing plate 5 increases the sensing speed and accurately radiates the pan 15 and the like on the range 13 so that the discharge conduit 3 is moved left and right in a direction approaching just above the burner on the left and right of the range. Extending forward, the discharge nozzle 4 at the tip is directed toward the right and left burners 14 at a constant angle.

2 (a) and 2 (b) are also examples of the arrangement of the discharge conduit 3 by the branch holder 2 of claim 1. Unlike the structure in which the discharge conduit 3 of FIG. It is a structure with a discharge conduit.

  FIG. 3 is also an example in which discharge conduits are arranged on the left and right via a two-way branch pipe at the single-port holder outlet of claim 1.

  FIG. 6 shows a structure in which the main body container of claim 4 is installed horizontally, and is a view in which the two right and left discharge conduits 3 are taken out from both end faces or tube parts of the pipe-like container.

  4 and 5 show an example of an automatic fire extinguishing apparatus in which a branch holder 2 or a single-port holder 24 is provided in the lower part of the main body container 1 of claim 5 and the discharge conduit 3 with the heat sensing plate 5 is arranged on the left and right.

FIG. 11 shows an example in which an elbow (elbow joint) 27 is provided in the discharge conduit 3 by means for directing the nozzle downward in claim 3, and FIG. 12 shows a nozzle having a downward structure in claim 3 provided at the tip of the discharge conduit. This is an example of the elbow discharge nozzle 28.
As the structure of the fire extinguishing apparatus, in addition to the above-described form, specifically, a fire extinguishing apparatus having performance and function conforming to the standards of related laws and regulations is assumed.

Moreover, the specific attachment method of this invention goods is demonstrated in the Example of FIG. 9 and FIGS. 10-1 to 10-3.
10-1 and 10-2 are side views of the main body installed state.
The fire extinguisher is attached to the facing wall at the center position of the burner 14 on the left and right sides of the range 13 under the hood 12. For the mounting height, the range where performance has been confirmed in the range from the range surface to the lower end of the hood shall be specified.
The container mounting bracket should be light and easy to attach and detach the container.
FIG. 10-1 is a view in which the main body mounting bracket is attached using the folded portion of the hood.
The upper end of the body mounting bracket is L-shaped and is used when mounting to the hood.
When the lower edge of the hood cannot be used, the main body mounting bracket is fixed with screws or an adhesive as shown in FIG. 10-2. General buyers can work according to the instruction manual.
FIG. 10-3 is an example in which the main body mounting bracket is installed under the hood using the hood folding-back mounting bracket.
Fit the split groove of the hood mounting bracket into the folded hood part from above, and tighten it with a butterfly bolt etc. from below with the L part at the top of the body mounting bracket pressed against the lower part of the folded part. Can be installed without the need for special tools and skills.

In the perspective view, two discharge conduits are installed on the left and right sides from the branch holder at the top of the fire extinguisher body, and the discharge conduits are spaced at an interval that can effectively detect or extinguish a left or right burner fire in the left or right range. After extending sideways and forward, each is directed toward the left or right burner of the lower range, and the discharge nozzle that automatically opens with spraying performance and fire heat including a pan placed on the burner at the tip Automatic fire extinguisher with The branch holder modification of FIG. 1 which extends | stretches to a horizontal direction after taking out a discharge conduit from the branch holder of a fire extinguisher upper part in a perspective view. An example in which discharge pipes are arranged on the left and right via a two-way branch pipe in a single-port holder at the top of the fire extinguisher. An example in which discharge conduits are arranged on the left and right from the branch holder provided at the bottom of the fire extinguisher. The figure which distribute | arranged the discharge | emission conduit | pipe from the single-port holder provided in the fire extinguisher lower part through the bi-directional branch pipe on either side. The figure which distribute | arranged the discharge conduit from right and left from the both sides | surfaces of a pipe-shaped container. An example in which the discharge conduits are arranged on the left and right from the front of the trunk of the pipe-shaped container. An example in which discharge cylinders are arranged on the left and right from the bottom of the pipe of the pipe-shaped container. Represents a state where the fire extinguisher is installed on the bottom wall of the hood with a hood fan. By installing the fire extinguisher main body on the back wall at the center of the range width, the left and right discharge nozzles are installed toward the burners on the left and right sides of the range. . The main body installation drawing using the folded part of the lower edge of the hood. Depending on the material, the main unit mounting bracket can be fixed to the wall under the hood with screws. This is an example in which the main body mounting bracket is installed under the hood using the hood folding-back mounting bracket. An automatic fire extinguisher equipped with a discharge nozzle at the tip of the discharge barrel through an elbow. An automatic fire extinguisher with an elbow discharge nozzle at the end of a horizontal discharge tube. The structural example of a heat sensing nozzle. This is an example of installation of a conventional burner bite protection type automatic fire extinguishing device, and it is necessary to install two fire extinguishing devices in order to protect the left and right burners. Conventional wall-mounted product. It is a type that protects the entire surface of the range with one discharge nozzle. The main body container is large, a discharge conduit is laid, and the discharge nozzle is fixed on the wall or the like toward the range surface. A conventional automatic fire extinguishing device for a range with a hood fan that connects and connects a discharge cylinder pipe from a main body container placed in a separate space to two discharge nozzles provided in the hood. Conventional automatic fire extinguishing device for a range with a hood fan for a pipe-shaped container installed horizontally in the hood.

Explanation of symbols

1 ... Main body container
2 ... Branch holder
3 ... Release conduit
4 ... discharge nozzle 5 ... heat sensing plate
6… Indicating pressure gauge
7: Pressure inlet
8 ... Siphon tube
9 ... Body mounting bracket
10 ... Bidirectional branch joint
11 ... Fire extinguisher 12 ... Hood
13 ... Range 14 ... Burner
15 ... Cooking pan 16 ... Fire extinguisher mounting wall
17 ... Storage space
18 ... Food fold-back part 19 ... Body length adjustment pipe
20 ... Seal 21 ... O-ring 22 ... Easily molten metal (solder)
23 ... discharge nozzle connection (brazing etc.)
24 ... Single-port holder 25 ... Wall mounting screw 26 ... Food fold-back mounting bracket 27 ... Elbow joint 28 ... Elbow type discharge nozzle 29 ... Ventilation fan

Claims (5)

  In a fire extinguisher automatic fire extinguisher that occurs in a stove with a hood fan for heating in the kitchen for gas or electricity, a short discharge with a heat-sensing nozzle from the main container of the accumulator fire extinguisher. The conduits are arranged on the left and right burner parts of the range to form a compact integrated structure. When a fire breaks out from one of the left and right burner parts, the fire is arranged corresponding to the upper part. An automatic fire extinguishing apparatus, wherein only the nozzle of the discharge conduit with the heat sensor on the side is opened early, and the fire extinguishing agent in the main body container is concentrated and discharged in the range on the fire side.   An automatic fire extinguisher for a range with a hood fan that fixes the main body to the back wall at the center of the range width in a certain height range from the range surface to the lower end of the upper hood. Discharge conduits to the left and right via a bi-directional branch pipe at the branch holder or single-port holder outlet that branches the discharge passage communicating with the inside of the fire extinguisher body provided at the top of the pressure-accumulating fire extinguisher body 2. The automatic fire extinguishing apparatus according to claim 1, wherein the discharge pipes are arranged and attached, and discharge nozzles each directed toward the range surface are provided at the tip of the discharge conduit.   In addition to a structure that bends a discharge pipe extending horizontally from the main body downward as means for directing the nozzle downward, it also includes a method of using an elbow in the downward direction in the middle of the discharge pipe and a method of directly attaching a discharge nozzle having a downward structure The automatic fire extinguishing apparatus according to claim 1.   A pipe-type accumulator-type fire extinguisher body filled with a fire-extinguishing agent for horizontal installation, with the range from the left and right pipe joints communicating with the inside of the pipe-shaped container or the inside provided at both end faces downward to the tip The automatic fire extinguisher for a range with a hood fan attached to the lower wall surface of the hood according to claim 1, wherein two discharge conduits each having a discharge nozzle directed toward the surface are arranged.   A bi-directional branch joint is provided at the outlet of the branch holder or the single-port holder that has a discharge passage that communicates with the inside of the fire extinguisher body provided in the lower part of the pressure-accumulating fire extinguisher body without an internal siphon filled with a fire extinguishing agent An automatic fire extinguisher for a range with a hood fan attached to the lower wall surface of the hood according to claim 1, wherein discharge conduits are provided on the left and right sides, and discharge nozzles facing the downward range surface are provided at both ends.

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