JP2008249178A - Gas stove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent transmission of external impact shock to an ignition electrode 31 or a flame detector inserted into a through hole 41 or a cut formed on a burner ring 4 even when the force in the rotating direction acts on the burner ring 4, in a gas stove comprising a top panel 3 provided with an opening 30 for a burner in which a burner portion 20 having a number of burner ports is inserted, the annular burner ring 4 closing a clearance between a peripheral edge of the opening 30 for the burner and an outer peripheral face of the burner portion 20, and provided with the through hole 41 or the cut for inserting the ignition electrode 31 or the flame detector attached to the burner portion 20, and an annular ring base 1 to which the burner ring is fixed in a state of relatively unrotatable. <P>SOLUTION: The ignition electrode 31 or the flame detector are mounted on fixing brackets 11 fixed to the burner portion 20 or its neighborhood, and the ring base 1 is engaged with the fixing brackets 11 in a state of being locked in the circumferential direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a gas stove, and more particularly, to a gas stove of a type in which a burner ring is disposed in a gap between a peripheral edge of a burner opening provided on a top plate and an outer peripheral surface of a burner portion constituting a flame hole of the gas burner. .

  FIG. 6 shows a burner portion (20) which is an upper end portion of a gas burner (2) housed in a main body of a table stove, and a burner opening (30) from which the burner portion (20) protrudes and the stove. It is the perspective view which showed the top plate (3) which covers the upper open part of a main body, and the five virtues (5) installed in the periphery of the opening for burners (30) on a top plate (3).

The burner part (20) is mounted on the burner body (22) and the burner body (22) extending upward from the downstream end of the mixing pipe (not shown) of the gas burner (2). (22) and a burner head (23) that forms a number of flame holes (24).
An ignition electrode (31) and a flame detector (32) for detecting misfire are attached to the outer periphery of the burner body (22).

An annular gap formed between the peripheral edge of the burner opening (30) and the outer peripheral surface of the burner body (22) of the burner part (2) is closed by an annular burner ring (4).
The burner ring (4) is provided under the ring (not shown) provided on the back surface of the top plate (3) so as to cover the periphery of the burner opening (30). (30) is mounted in such a way as to sandwich the peripheral edge, and at each position corresponding to the ignition electrode (31) and the flame detector (32), there are through holes (41), (42) for inserting them. Is formed.

The five virtues (5) are an annular five virtue frame (51) installed along the outer periphery of the burner ring (4), and a plurality of five virtue claws (50) attached to the five virtue frames (51). It is composed of Of the five virtue claws (50), the lower sides of the two virtue claws (50a) and (50b) at the opposite positions are extended inward from the five virtue frames (51), respectively, and the extensions (52) and (52) By forming this extension part (52) (52) to engage with a notch (40) (40) provided on the outer peripheral part of the burner ring (4), respectively, the five virtues (5) It is installed in a detent state against the burner ring (4). Then, the burner ring (4) is prevented from rotating with respect to the burner portion (20) by inserting the ignition electrode (31) and the flame detector (32) into the through holes (41) and (42). Yes.
Japanese Patent Application No. 2006-174959 JP 2006-29719 A

  However, in the conventional gas stove, as described above, the extension (52) of the virtues (5) is engaged with the notch (40) of the burner ring (4), and the ignition electrode (31) and the flame detection Since the vessel (32) is inserted through the through holes (41) and (42) of the burner ring (4), a strong external impact is applied to the five virtues (5), causing the five virtues (5) to be inadvertently displaced or rotated. As a result, the burner ring (4) is also displaced or rotated in the same direction along with this, so that the ignition electrode (31) or the flame detector (32) has a through hole (41) (42). The peripheral edge abuts strongly. As a result, the ignition electrode (31) or the flame detector (32) is tilted, and the correlation with the burner head (23) cannot be maintained, causing problems in ignition and combustion detection, or the insulator of the ignition electrode (31). There is an inconvenience of being damaged by chipping.

The present invention is "a gas burner having a burner portion in which a number of flame holes are formed, and
A top plate formed with a burner opening through which the burner portion is inserted;
An annular ring is formed that closes a gap between the peripheral edge of the burner opening and the outer peripheral surface of the burner part, and is formed with a through hole or a notch for inserting an ignition electrode or a flame detector attached to the burner part. Burnering,
Even if a rotational force acts on the burner ring in the gas stove provided with an annular ring attached to the back surface of the peripheral edge of the opening for the burner and the burner ring being fixed in a state of preventing relative rotation, It is an object to prevent external shock from being transmitted to an ignition electrode or a flame detector inserted through a through hole or notch provided in a burner ring.

(1) The gas stove of the invention according to claim 1 is: "The ignition electrode or the flame detector is respectively attached to a fixing bracket fixed to the burner part or its vicinity,
The fixing metal fitting is engaged with the bottom of the ring in a circumferentially stopped state ”.
The above means operates as follows.
The burner portion projects upward from the top plate from the central opening of the annular burner ring, and the ignition electrode and the flame detector project from the top plate through a through hole or notch provided in the burner ring. The ignition electrode and the flame detector are respectively attached to the fixtures below the burner ring. The fixing brackets are respectively fixed to the burner portion or the vicinity thereof.
An underside of an annular ring is attached to the rear surface of the peripheral edge of the opening for burner of the top plate, and the burner ring is fixed in a state of preventing relative rotation under the ring. For this reason, the lower ring can be rotated together with the burner ring.

  In addition, the lower part of the ring is engaged with the fixing bracket in the circumferential direction so that when a rotational force is applied to the burner ring, the same rotational force is also applied to the lower part of the ring. However, rotation under the ring is prevented by the fixing bracket. Since the rotation under the ring is prevented, the rotation of the burner ring is also prevented, so that the through hole provided in the burner ring or the peripheral edge of the notch does not contact the ignition electrode from the side.

(2) The gas stove according to the invention of claim 2 is the gas stove according to claim 1, wherein both end portions of the fixing bracket protrude in the circumferential direction from the ignition electrode or the flame detector,
A plurality of projecting pieces positioned close to the both side ends of the fixing bracket are projected inward from the inner peripheral edge under the ring, and the fixing bracket is an ignition electrode or It is provided in a shape projecting on both sides in the circumferential direction of the burner part from the flame detector, and the projecting piece is projected from the inner peripheral edge under the ring so as to be close to both sides of at least one of the fixing brackets. Projecting inward.

  That is, by sandwiching the fixing bracket from both sides with the projecting piece, the lower part of the ring engages with the fixing bracket in a non-rotating state, and carelessly below the ring via the burner ring. Even if a force in the rotational direction is applied, the rotation under the ring is prevented by the projecting piece coming into contact with one side end of either one of the fixing brackets. Since the fixing bracket is provided so as to protrude to both sides in the circumferential direction from the ignition electrode or the flame detector, the projecting piece does not directly contact the ignition electrode or the flame detector.

(3) The gas stove according to the invention of claim 3 is the gas stove according to claim 1, wherein “a fixture for the ignition electrode and a fixture for the flame detector are provided. Projecting in the circumferential direction from the electrode or flame detector,
A plurality of projecting pieces project inward from the inner periphery under the ring,
The protruding piece is provided at a position close to each side end portion of the fixing bracket for the ignition electrode and the fixing bracket for the flame detector that are opposed to each other in the circumferential direction. If a rotational force is applied from one direction under the ring due to an external impact applied to the burner ring, for example, a fixture for an ignition electrode When one side end of the abutment abuts one of the projecting pieces and a reverse rotational force is applied, out of both side ends of the flame detector fixing bracket, the ignition electrode fixing bracket The projecting position of each projecting piece is set so that the side end facing the one side end contacts the other projecting piece. As a result, either the ignition electrode fixing bracket or the flame detector fixing bracket abuts one of the projecting pieces, regardless of which direction of rotation in the left or right direction is applied below the ring. That rotation is prevented.

  (4) In the gas stove according to any one of claims 1 to 3, “a five virtues are installed so as to surround the burner ring, and a part of the inner peripheral edge of the virtues is related to the outer peripheral edge of the burner ring. `` There are notches to be combined '', the five virtue, the burner ring, and the bottom of the ring are connected to each other in a state that prevents relative rotation, so that they protrude from the bottom of the ring. By preventing the rotation under the ring by the projecting piece, the burner ring and even the inadvertent rotation of the five virtues are prevented.

  According to the first aspect of the present invention, it is possible to prevent the rotation under the ring and the rotation of the burner ring that rotates integrally with the bottom of the ring by engaging the fixing bracket in the non-rotating direction under the ring. Therefore, even if an external impact is applied to the burner ring, the burner ring does not rotate carelessly. Therefore, the inconvenience that the ignition electrode or the flame detector is deformed or damaged by the impact of the through hole of the burner ring through which the ignition electrode or the flame detector is inserted or the notch can be prevented. Correlation with the burner head placed on the burner portion is maintained.

  According to the second aspect of the present invention, the projecting piece protrudes from the inner peripheral edge under the ring at a position close to both end portions of the ignition electrode fixing bracket or both end portions of the flame detector fixing bracket. It is designed to prevent rotation in the lower circumferential direction, and just attach the bottom of the ring from the back side to the peripheral edge of the opening for the burner of the top plate so that the projecting pieces are located on both sides of the fixing bracket. Therefore, the gas stove can be easily assembled.

  Further, in order to fix the bottom of the ring in a non-rotating state, as in the third aspect of the invention, a position close to one side end of the ignition electrode fixing bracket and one side end of the flame detector fixing bracket One protruding piece may be provided one by one at a position close to the portion, and one of the fixing brackets may be in contact with the protruding piece.

  Further, according to the invention according to claim 4, in addition to the above-described effect, it is possible to prevent inadvertent rotation of the virtues, so that the virtues are maintained in an accurately installed state. Therefore, it is possible to prevent the inconvenience that the virtues are inadvertently rotated and the virtues claws are hit by flames and the combustion efficiency is deteriorated.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
The gas stove according to the embodiment of the present invention is a table stove having a gas burner (2) as a heating source. As shown in FIG. 1, a plurality of gas burners (10) are placed in a stove body (10) that is a rectangular box body opened upward. 2) is accommodated together with an output device (not shown) such as a solenoid valve and an ignition device, and the upper open portion of the stove body (10) is covered with a glass top plate (3). A burner opening (30) is formed at each position of the top plate (3) corresponding to the burner portion (20) at the upper end of the gas burner (2).

  The burner part (20) comprises a burner body (22) formed by an inner cylinder (22a) and an outer cylinder (22b) extending upward from the downstream end of the mixing pipe (21). 1 and 2, the ignition electrode (31) and the flame detector (32) are externally attached via fixing brackets (11) and (12), respectively.

  As shown in FIG. 2, the fixing bracket (11) for fixing the ignition electrode (31) is substantially arranged so as to surround the body portion of the ignition electrode (31) from the inner side (burner portion (20) side). A U-shaped horizontal plate (11a), a vertical plate (11b) that is suspended from the outer side edge of the horizontal plate (11a) and whose lower end is fixed to the outer cylinder (22b) of the burner body (22), The vertical plate (11b) is configured to include a pair of side plates (11c) and (11c) projecting from both ends of the upper region of the vertical plate (11b) to the horizontal plate (11a) side, and the side plates (11c) and (11c) They are located on both sides of the horizontal plate (11a) and face each other.

In other words, the horizontal plate (11a) of the fixing bracket (11) projects horizontally from the ignition electrode (31) on both sides in the circumferential direction of the burner portion (20), and hangs down from both end portions thereof. Two side plates (11c) and (11c) are provided.
The flame detector (32) is also fixed by a fixing bracket (12) having substantially the same configuration, but this fixing bracket (12) is narrower than the fixing bracket (11) of the ignition electrode (31). It is configured.

  On the burner body (22), an annular burner head (23) is placed, and a large number of tooth forms provided on the outer periphery of the lower surface of the burner head (23), and an outer cylinder of the burner body (22) ( A flame hole (24) is formed between the upper end of 22b). A pan bottom temperature sensor (25) is disposed in the inner cylinder (22a), and the upper end of the pan bottom temperature sensor (25) protrudes above the burner head (23).

  A burner ring (4) is installed so as to close a gap (S) between the peripheral edge of the burner opening (30) and the outer peripheral surface of the burner body (22), and the ignition electrode (31) As shown in FIG. 1 and FIG. 3, through-holes (41) and (42) for inserting these are formed at positions corresponding to the flame detector (32).

Gortoku (5) is placed around the burner ring (4). The five virtues (5) are composed of five virtue frames (51) placed around the burner ring (4) and a plurality of five virtue claws (50) attached to the five virtue claws (50). Extension parts (52) and (52) extend inward from the lower sides of the pair of virtuosity claws (50a) and (50b) at the opposite positions, and these are provided around the burner ring (4). The notches (40) and (40) are respectively locked. As a result, the five virtues (5) are prevented from rotating with respect to the burner ring (4).
In addition, FIG. 1 is sectional drawing cut | disconnected longitudinally along the irregular line | wire which passes through 5 virgin claws (50a) and another 5 virgin claws (50).

Further, an annular lower ring (1) as shown in FIG. 4 is disposed on the back surface of the top plate (3) at the periphery of the burner opening (30).
At the central opening under the ring (1), a plurality of tongue pieces (13) project horizontally inward at regular intervals, and between them, the guide piece (14) is diagonally upward. It protrudes inward toward. Each of the tongue pieces (13) and the guide pieces (14) are projected so as to project into the burner opening (30) when the lower ring (1) is attached to the back surface of the peripheral edge of the burner opening (30). Is set.
Note that the two round holes (18) and (18) shown in the figure are holes for positioning the press die, and the four square holes (19) and (19) are packing (16) (17 ) Is a hole provided to confirm whether or not it is inserted.

  Further, the tongue piece (13) has an insertion hole (13a) through which the fixing screw (33) is inserted, at each position on the back surface of the burner ring (4) corresponding to the tongue piece (13). As shown in FIG. 5, there is provided a mounting seat (44) in which a screw hole (43) into which the fixing screw (33) can be screwed is formed.

  A lower ring (1) is attached to the back of the periphery of the burner opening (30) of the top plate (3), and the mounting seat (44) is attached to each tongue piece (13) projecting into the burner opening (30). The burner ring (4) is installed on the surface of the top plate (3) through the packings (16) and (17). Then, the fixing screw (33) is inserted from below the ring (1) into the insertion hole (13a) of the tongue piece (13) and screwed into the screw hole (43) of the mounting seat (44). Thus, the burner ring (4) and the lower ring (1) are respectively attached to the front and back of the peripheral edge of the burner opening (30) in such a manner as to sandwich the top plate (3) and the upper and lower packings (16) (17). Will be. In this way, the burner ring (4) is attached to each other in a state of preventing relative rotation by being screwed under the ring (1). In this state, the combined body of the burner ring (4) and the lower ring (1) can move in the horizontal and rotational directions with respect to the top plate (3) within the gap (S). It is.

Further, as shown in FIG. 4, a pair of projecting pieces (15) and (15) project inward from a predetermined position on the inner peripheral edge of the lower ring (1), and these projecting pieces (15 ) (15) is approximately equal to the distance between the outer surfaces of the both side plates (11c) and (11c) of the fixing bracket (11).
When the burner ring (4) is placed under the ring (1) with the predetermined mounting seat (44) corresponding to the predetermined tongue piece (13), the protrusions (15) (15) The positional relationship of each part is set so that the through hole (41) for inserting the ignition electrode (31) is located at the approximate center position, and the flame detector (32) corresponds to the through hole (42). It shall be.

  In the table stove of this embodiment, a gas burner (2), a control device, etc. are installed in the stove main body (10), and the peripheral edge of the burner opening (30) of the top plate (3) is pre-burner ring. (4) and the lower ring (1) are fixed by the fixing screws (33) through the packings (16) and (17). Then, when the upper open portion of the stove body (10) is closed with the top plate (3), the projecting pieces (15) below the ring (15) on both sides of the fixing bracket (11) fixed to the gas burner (2) ) (15) is positioned by rotating the lower ring (1) together with the burner ring (4).

  As a result, when the top plate (3) is installed in the upper open part of the stove body (10), the projecting pieces (15) (15) under the ring (1) are located close to both sides of the fixing bracket (11). In addition, the ignition electrode (31) is in the through hole (41) of the burner ring (4), the flame detector (32) is in the through hole (42), and the burner part (20) is the central opening of the burner ring (4). As shown in FIGS. 1 and 3, the burner portion (20), the ignition electrode (31), and the flame detector (32) protrude above the burner ring (4). After that, put the five virtues (5) around the burner ring (4) so that the notches (40), (40) of the burner ring (4) are locked with the five virtue claws (50a, 50b) Installation of the table stove is completed.

  In the gas stove of this embodiment, on both sides in the rotational direction of the lower ring (1) of both side plates (11c) and (11c) of the fixing bracket (11) fixed in the stove body (10) ( Since the projecting pieces (15) and (15) of 1) are protruded, either one of the projecting pieces (15) or (15) will be attached to the side plate (11c) (11c) ), The rotation under the ring (1) is prevented.

As a result, the rotation of the burner ring (4) screwed in the relative rotation blocking state under the ring (1) is also blocked, and further the rotation of the virtues (5) is also blocked.
Therefore, even when a force in the rotational direction is applied to the virtues (5) or the burner ring (4) during cleaning or the like, the burner ring (4) does not rotate carelessly. Therefore, by the inadvertent rotation of the burner ring (4), the ignition electrode (31) or the flame detector (32) inserted through the through holes (41), (42) of the burner ring (4) is passed through the through holes (41 There is no inconvenience of being bent or bent by being pushed to the periphery of the burner head (42), and the correlation between the burner head (23) and the ignition electrode (31) or the flame detector (32) is not shifted.
In the above embodiment, the protruding pieces (15) and (15) are set to protrude on both sides of the fixing metal fitting (11) for fixing the ignition electrode (31). ) May be provided in close proximity to both sides of the fixing bracket (12) for fixing the flame detector (32).

Also, one projecting piece (15) protrudes on one side of the fixture (11) and the other projecting piece (15) projects on the other side of the fixture (12), and the burner ring (4) rotates in one direction. When the one projecting piece (15) is in contact with the fixing bracket (11), the rotation of the lower ring (1) is prevented, and when the one projecting piece (15) is rotated in the opposite direction, the other projecting piece (15) is in contact. When the piece (15) comes into contact with the fixing fitting (12), the rotation of the lower ring (1) is prevented.
The ignition electrode (31) may be an ignition heater or a ceramic heater, and the flame detector (32) includes a thermocouple or a frame rod.

The principal part expanded sectional view which shows the assembly completion state of the gas stove of embodiment of this invention. Explanatory drawing which shows the relationship between the burner part of the gas stove of embodiment of this invention, and a ring bottom. The perspective view of the principal part which shows the top plate surface of the assembly completion state of the gas stove of embodiment of this invention. The perspective view under the ring employ | adopted as the gas stove of embodiment of this invention. The principal part expanded sectional view which shows the lower ring and burner ring which were employ | adopted as the gas stove of embodiment of this invention. The perspective view of the principal part which shows the top plate surface of the conventional gas stove.

Explanation of symbols

(1) ・ ・ ・ ・ ・ ・ Under the ring
(11) ・ ・ ・ ・ ・ ・ Fixing bracket
(15) ...
(2) ・ ・ ・ ・ ・ ・ Gas burner
(20) ... Burner club
(24) ... Flame hole
(3) ・ ・ ・ ・ ・ ・ Top plate
(30) ... Burner opening
(31) ... Ignition electrode
(4) ・ ・ ・ ・ ・ ・ Burnering
(41) ・ ・ ・ ・ ・ ・ Through holes
(S) ・ ・ ・ ・ ・ ・ Gap

Claims (4)

A gas burner having a burner part in which a large number of flame holes are formed;
A top plate formed with a burner opening through which the burner portion is inserted;
An annular ring is formed that closes a gap between the peripheral edge of the burner opening and the outer peripheral surface of the burner part, and is formed with a through hole or a notch for inserting an ignition electrode or a flame detector attached to the burner part. Burnering,
In a gas stove provided with an annular ring attached to the back surface of the peripheral edge of the opening for the burner and fixed to a state in which the burner ring is prevented from relative rotation,
The ignition electrode or the flame detector is respectively attached to a fixing bracket fixed to the burner part or its vicinity,
A gas stove, wherein the fixing bracket is engaged with the bottom of the ring in a circumferentially stopped state. The gas stove according to claim 1, wherein both end portions of the fixing bracket protrude in the circumferential direction from the ignition electrode or the flame detector,
A gas stove characterized in that a plurality of projecting pieces located close to the both side end portions of the fixing bracket are projected inward from the inner peripheral edge under the ring. The gas stove according to claim 1, wherein a fixing bracket for an ignition electrode and a fixing bracket for a flame detector are provided, and each of the fixing brackets protrudes in the circumferential direction from the ignition electrode or the flame detector, respectively. And
A plurality of projecting pieces project inward from the inner periphery under the ring,
The gas stove, wherein the protruding piece is provided at a position close to each side end portion of the fixing bracket for the ignition electrode and the fixing bracket for the flame detector that face each other in the circumferential direction.   The gas stove according to any one of claims 1 to 3, wherein a virtues are installed so as to surround the burner ring, and a part of an inner peripheral edge of the virtues is engaged with an outer peripheral edge of the burner ring. The gas stove characterized by being provided.

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