JP2006183920A - Fireplace type heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow maintenance of first and second burners by removing a support plate without having to remove flame detecting elements that face the tops of the first and second burners. <P>SOLUTION: In this fireplace type heater, the first burner and a pair of right and left second burners located therebehind are disposed beneath the support plate on which dummy firewood in a combustion casing 2 is placed, with the upper ends of the first and second burners fitted into respective burner openings bored through the support plate. Further, an igniting member is disposed between the first and second burners in such a manner as to protrude onto the support plate through a see-through hole bored in the support plate. The support plate 12 is divided into a front plate 121 and a rear plate 122 by a first dividing line L1 extending from the horizontal outer end of each second burner opening 12b behind the flame detecting element 19 for the second burner to the horizontal outer edge of the support plate 12, and a second dividing line L2 extending from the rear edge of the first burner opening 12a on each horizontal side of the location of the igniting member to the front edge of each second burner opening 12b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fireplace-type heater that includes an outer case and a combustion housing provided in the outer case, and that allows the inside of the combustion housing to be viewed from the front side of the outer case.

  Conventionally, as a heater of this type, a pseudo ridge formed of a refractory material such as ceramics is placed on a support plate disposed at the lower part of the combustion housing, and the support plate is opened below the support plate. It is known that a burner is placed facing the opening, and when the burner is burned, the flame rises on the support plate through the opening, and the soot also gives a visual impression that the false soot is burning (For example, refer to Patent Document 1).

  In the above conventional example, a plurality of torch-like burners are arranged on the lower side of the support plate. However, in this case, it is felt that the pseudo soot is partially burned at a location where the burner matches the arrangement portion of the burner. Therefore, a first longitudinal burner in the lateral direction and a pair of left and right second burners in the lateral direction located on the rear side of the first burner are arranged on the lower side of the support plate. It is possible to give the impression of burning. In this case, the support plate is provided with a first burner opening for fitting the upper end portion of the first burner and a pair of left and right second burner openings for fitting the upper end portions of the left and right second burners, It is desirable to prevent the wobble of each burner. In addition, an ignition member that is positioned between the first burner and the left and right second burners and ignites the first burner and the left and right second burners protrudes from the support plate through a through hole formed in the support plate. It is desirable to arrange so as to. Furthermore, as a misfire safety measure, it is desirable to insert a flame detection element for each burner from the lateral direction into the combustion housing so as to face directly above the first and second burners.

In this case, it is necessary to be able to remove the support plate so that the first and second burners can be inspected and repaired during maintenance of the heater. Here, if the support plate is lifted above the ignition member, the ignition member is detached below the through-hole, and the upper ends of the first and second burners are also detached below the respective burner openings to support the ignition plate. The board can be removed. However, if the flame detection element for each burner is inserted in the combustion housing from the side, the support plate may not be lifted above the ignition member due to the interference of the support plate with the flame detection element. In this case, it may be possible to remove the flame detection element and lift the support plate. However, this is troublesome and the maintainability deteriorates.
Japanese Utility Model Publication 5-37129

  In view of the above, an object of the present invention is to provide a fireplace-type heater with improved maintainability so that a support plate can be removed without removing a flame detection element.

  In order to solve the above problems, the present invention is an fireplace-type heater that includes an outer case and a combustion housing provided in the outer case, and allows the inside of the combustion housing to be visually observed from the front side of the outer case, A pseudo soot is placed on a support plate disposed in the lower part of the combustion housing, a first burner that is long in the lateral direction below the support plate, and a longitudinally long piece that is located behind the first burner. A pair of left and right second burners is disposed, and a first burner opening for fitting the upper end of the first burner to the support plate and a pair of left and right second burners for fitting the upper ends of the left and right second burners. And an ignition member that is positioned between the first burner and the left and right second burners to ignite the first burner and the left and right second burners is provided on the support plate. It is arranged so as to protrude on the support plate through the hole and faces directly above the first and second burners. In the case where the flame detection element for each burner is inserted into the combustion housing from the lateral direction, the support plate is divided into two parts, a front plate and a rear plate. A first dividing line that reaches a lateral outer edge of the burner support plate from a lateral outer end of each second burner opening on the rear side of the projection position below the flame detecting element for two burners; A second dividing line extending from the rear edge of the first burner opening to the front edge of each second burner opening is provided on both lateral sides of the arrangement portion.

  According to the present invention, the rear plate of the support plate is located between the rear part of the first dividing line, the rear part of the second burner opening, and the lateral inner ends of the left and right second burner openings. And a portion between the second dividing lines on both sides of the ignition member arrangement portion (a portion including the ignition member arrangement portion). Here, the first dividing line is located behind the flame detection element for the second burner. Therefore, the rear plate can be lifted and removed above the ignition member without causing interference with the flame detection elements for the first burner and the second burner. On the other hand, when the front plate is lifted high, the front plate interferes with the flame detection elements for the first burner and the second burner. However, since the front plate does not include the arrangement portion of the ignition member, the height at which the upper end portion of the first burner separates from the front plate below the first burner opening (this height is lower than the flame detection element). ), The front plate can be removed directly. Accordingly, the first and second burners can be inspected and repaired by removing the rear plate and the front plate without removing the flame detection elements for the first burner and the second burner, thereby improving maintainability. To do.

  By the way, the portion of the support plate between the first burner and the second burner is heated by both the first and second burners and becomes high temperature, and thermal distortion is likely to occur in this portion. Here, if the second parting line is formed wide so that a gap is formed between the front plate and the rear plate, the gap between the first burner and the second burner is caused by the gap. The thermal expansion in the direction is absorbed, and the generation of thermal strain is suppressed. In this case, the tongue in contact with the lower surface of the edge along the second dividing line of the other plate of the front plate and the rear plate on the edge along the second dividing line of one of the front plate and the rear plate By extending the piece and screwing the holding piece that sandwiches the other plate between the tongue piece, the front plate and the rear plate can mutually absorb the thermal expansion in the lateral direction. The strength of the entire support plate is ensured. It should be noted that the rear plate and the front plate can be removed as described above by releasing the screwing of the presser piece to the one plate.

  Hereinafter, an embodiment in which the present invention is applied to a wall-embedded fireplace heater will be described. As shown in FIGS. 1 to 3, the heater includes an outer case 1 and a combustion housing 2 provided in the outer case 1. A detachable front panel 1 a is provided on the front surface of the outer case 1. Further, as shown in FIG. 3, the outer case 1 is disposed so as to be embedded in a recess Wa formed in the chamber wall W, and only the front portion of the outer case 1 is exposed in front of the chamber wall W. .

  The combustion housing 2 is provided with a detachable front door 2a on the front surface thereof. Then, a glass plate 2b is attached to the front door 2a, and a window portion 1c with a window glass 1b that faces the glass plate 2b is opened on the front panel 1a of the outer case 1, and the combustion housing 2 is opened from the front of the front panel 1a. The inside is visible. Further, a pseudo soot 13 and burners 14 and 15 which will be described later are provided in the combustion housing 2, and when the burners 14 and 15 are burned, the visual impression that the soot 13 is also burning. To be able to give.

  The combustion exhaust in the combustion casing 2 is sent to the outside via a heat exchanger 3 disposed on the rear side of the combustion casing 2 and an exhaust duct 5 connected to the downstream side of the heat exchanger 3 via an exhaust fan 4. It is forcibly discharged. An air supply duct 6 is connected to the bottom of the combustion housing 2, and outdoor air is forcibly supplied into the combustion housing 2 through the air supply duct 6 by the suction force of the exhaust fan 4. The exhaust duct 5 is disposed on the left outer side of the combustion casing 2, and the front door 2 a is projected to the left side of the combustion casing 2 in order to prevent radiant heat from the exhaust duct 5 from reaching the front panel 1 a. Is formed.

  In the outer case 1, a warm air fan 7 is disposed above the combustion housing 2. And while opening the air intake 8 in the front edge part of each side plate part 1d on either side of the outer case 1, the ventilation opening 9 is opened in the lower part of the window part 1c of the front panel 1a, and indoor air is air The air is sucked into the warm air fan 7 through the intake port 8 and is blown from the warm air fan 7 to the air blowing port 9 via the arrangement portion of the heat exchanger 3 and the space below the combustion housing 2 to perform the warm air heating function. I try to get it.

  An electronic control unit 10 and a burner valve unit 11 are disposed in the right side space between the outer casing 1 and the combustion housing 2. The electronic control unit 10 and the valve unit 11 are air-cooled by room air flowing in from the right air intake 8. A partition plate 2c that reaches the bottom surface and the back surface of the outer case 1 is provided on the outer sides of the left and right sides of the combustion housing 2 to partition the air blown from the hot air fan 7 from escaping in the lateral direction. This can be prevented by the plate 2c. A guide plate 2 d that guides the air that has passed through the arrangement portion of the heat exchanger 3 to the air blowing port 9 is disposed below the combustion housing 2.

  As shown in FIGS. 4 and 5, a support plate 12 is disposed at the lower part of the combustion housing 2 so as to straddle brackets 2e and 2e fixed to the inner surfaces of the left and right sides of the combustion housing 2. On the plate 12, as shown in FIG. 3, a dummy rod 13 made of a refractory material such as ceramics is placed. Also, on the lower side of the support plate 12, there are a first burner 14 that is long in the horizontal direction and a pair of left and right second burners 15 and 15 that are positioned on the rear side of the first burner 14 and that are long in the horizontal direction. Has been placed. Then, a first burner opening 12a for fitting the upper end portion of the first burner 14 to the support plate 12, and a pair of left and right second burner openings 12b for fitting the upper end portions of the left and right second burners 15 and 15 are fitted. , 12b. Thus, the wobbling of the first and second burners 14 and 15 is prevented, and the gas ejected from the upper ends of the burners 14 and 15 burns on the support plate 12, and the pseudo soot 13 on the support plate 12. Can give the impression that the whole is burning.

  Further, between the first burner 14 and the left and right second burners 15 and 15, an ignition burner 16 and a spark plug 17, which are ignition members, are supported through through holes 12 c and 12 d (see FIG. 6) opened in the support plate 12. It is arranged to protrude above the plate 12. Then, the spark burner 16 is ignited by spark discharge at the spark plug 17, and the ignition burner 16 is transferred to the first burner 14 and the left and right second burners 15, 15 for ignition.

  Also, flame detection elements 18 and 19 for the burners 14 and 15, which are frame rods, are inserted into the combustion housing 2 from the lateral direction so as to face directly above the first and second burners 14 and 15. Yes. The flame detection element 18 for the first burner 14 and the flame detection element 19 for the left second burner 15 are inserted into the combustion housing 2 from the left side, and the flame detection element 19 for the right second burner 15 is It is inserted into the combustion housing 2 from its right side. Further, in the vicinity of the ignition burner 16, a flame detection element 20 for the ignition burner 16 is disposed so as to protrude onto the support plate 12 through a through hole 12 e provided in the support plate 12. Further, the support plate 12 is formed with a plurality of secondary air holes 12f at the peripheral portions of the above-described burner openings 12a and 12b, and is further positioned at the left and right side edges of the support plate 12. A plurality of mounting holes 12g are formed, and the support plate 12 is screwed to the bracket 2e in these mounting holes 12g.

  By the way, in order to be able to inspect and repair each of the first and second burners 14 and 15 during maintenance of the heater, it is necessary to be able to remove the support plate 12. Here, if the support plate 12 is lifted above the ignition burner 16, the ignition plug 17, and the flame detection element 20 for the ignition burner, the ignition burner 16, the ignition plug 17, and the flame detection element 20 for the ignition burner are connected to the through holes 12c, In addition to being separated below 12d and 12e, the upper ends of the first and second burners 14 and 15 are also detached below the respective burner openings 12a and 12b, and the support plate 12 can be removed. However, when the flame detection elements 18 and 19 for the first and second burners 14 and 15 are inserted from the lateral direction in the combustion housing 2 as in the present embodiment, the flame detection elements 18 and 19 are supported. The support plate 12 cannot be lifted above the ignition burner 16, the ignition plug 17, and the ignition detection device 20 for the ignition burner due to the interference of the plate 12. In this case, it may be possible to remove the flame detection elements 18 and 19 for the first and second burners 14 and 15 and lift the support plate 12, but this takes time and deteriorates maintainability.

  Therefore, in this embodiment, the support plate 12 is shown in FIG. 6 so that the support plate 12 can be removed without removing the flame detection elements 18 and 19 for the first and second burners 14 and 15. As shown, the front plate 121 and the rear plate 122 are divided into two. That is, as a dividing line between the front plate 121 and the rear plate 122 on the support plate 12, as shown in FIGS. 4 and 5, on the rear side of the projection position below the flame detection element 19 for each second burner 15. The first dividing lines L1 and L1 that reach the lateral outer edge of the support plate 12 from the lateral outer end of each second burner opening 12b, the ignition burner 16, the ignition plug 17, and the flame detection element 20 for the ignition burner. Second dividing lines L2 and L2 reaching the front edge of each second burner opening 12b from the rear edge of the first burner opening 12a are set on both lateral sides of the arrangement part (hereinafter referred to as the ignition member arrangement part). Then, the support plate 12 is divided into a front plate 121 and a rear plate 122 by these dividing lines L1 and L2.

  According to this, the arrangement part of the ignition member is included in the rear plate 122. Therefore, in order to remove the rear plate 122, it is necessary to lift the rear plate 122 above the ignition burner 16, the ignition plug 17, and the flame detection element 20 for the ignition burner after releasing the screwing of the front plate 121 to the bracket 2e. become. Here, the front edge of the laterally outer end of the rear plate 122 that coincides with the first dividing line L1 is located behind the flame detection element 19 for the second burner 15. Therefore, the rear plate 122 is made from the ignition burner 16, the ignition plug 17, and the flame detection element 20 for the ignition burner without causing interference with the flame detection elements 18 and 19 for the first and second burners 14 and 15. Can be lifted up. On the other hand, when the front plate 121 is lifted high, the front plate 121 interferes with the flame detection elements 18 and 19 for the first burner 14 and the second burner 15. However, since the front plate 121 does not include an ignition member disposition portion, the front plate 121 is unscrewed from the bracket 2e, and the upper end of the first burner 15 is positioned at the upper end of the first burner 15. The front plate 121 can be removed forward as it is if it is lifted to a height that disengages below 12a (this height is lower than the flame detection elements 18, 19). Thus, the front plate 121 and the rear plate 122 are removed without removing the flame detection elements 18 and 19 for the first and second burners 14 and 15, and the first and second burners 14 and 15 are inspected. Repair can be performed, and maintainability is improved.

  By the way, the portion of the support plate 12 between the first burner 14 and the second burner 15 that forms the second dividing line L2 receives the heat from the first and second burners 14 and 15 and is heated to a high temperature. Therefore, thermal distortion is likely to occur. Therefore, in the present embodiment, the second dividing line L2 is formed wide so that a gap is left between the front plate 121 and the rear plate 122. According to this, the thermal expansion in the lateral direction of the portion of the front plate 121 and the rear plate 122 between the first burner 121 and the second burner 122 is absorbed by the gap in the second dividing line L2, and the occurrence of thermal distortion. Is suppressed.

  Further, as shown in FIG. 6, the edge of the front plate 121 extending inward in the lateral direction along the second dividing line L <b> 2 of the front plate 121 and extending along the second dividing line L <b> 2 of the rear plate 122. A tongue piece 123 that contacts the lower surface is extended. Then, on the edge portion along the second dividing line L2 of the front plate 121, the presser piece 124 sandwiching the rear plate 122 between the tongue piece portion 123 and the tongue piece 123 is screwed using the screw hole 12h formed therein. Yes. According to this, the front plate 121 and the rear plate 122 are connected to each other in a state in which the thermal expansion in the lateral direction can be absorbed, and the strength of the support plate 12 as a whole is ensured. Further, if the screwing of the presser piece 124 to the front plate 121 is released, the rear plate 122 and the front plate 121 can be removed as described above. In addition, in this embodiment, although the tongue piece part 123 is extended to the front board 121, the edge which follows the 2nd division line L2 of the front board 121 in the edge part which follows the 2nd division line L2 of the rear board 122. It is also possible to sandwich the front plate 121 between the tongue piece portion 123 and the presser piece 124 by extending the tongue piece portion 123 in contact with the lower surface of the portion and screwing the presser piece 124.

  In the above embodiment, the ignition burner 16 and the ignition plug 17 are provided as the ignition member. However, the ignition member is provided between the first burner 14 and the left and right second burners 15, 15. Three corresponding spark plugs may be arranged, and the first and second burners 14 and 15 may be directly ignited by spark discharge by the spark plugs.

  As mentioned above, although embodiment which applied this invention to the wall-embedded type fireplace type heater was described, this invention is applicable to a floor-standing type fireplace type heater similarly.

The perspective view of the heater of embodiment of this invention. The front view of the state which removed the front panel of the heater of embodiment. The cut-away side view of the heater of embodiment cut | disconnected by the III-III line | wire of FIG. The perspective view of the state which removed the dummy flame | frame of the combustion housing | casing of the heater of embodiment. The cutting top view of a combustion housing. The perspective view of the decomposition | disassembly state of the support plate in a combustion housing.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Outer case, 2 ... Combustion housing, 12 ... Support plate, 121 ... Front plate, 122 ... Rear plate, 123 ... Tongue piece part, 124 ... Holding plate, L1 ... First dividing line, L2 ... Second division Line 12a ... Opening for first burner, 12b ... Opening for second burner, 12c, 12d, 12e ... Through hole, 13 ... Simulated rod, 14 ... First burner, 15 ... Second burner, 16 ... Ignition burner (Ignition Means), 17 ... ignition plug (ignition means), 18 ... first flame detecting element for burner, 19 ... second flame detecting element for burner.

Claims (3)

A fireplace-type heater that includes an outer case and a combustion casing provided in the outer case, and that allows the inside of the combustion casing to be viewed from the front side of the outer case, on a support plate disposed at the lower part of the combustion casing A pseudo urn is placed, and a first burner that is long in the lateral direction and a pair of left and right second burners that are long in the lateral direction and are located on the rear side of the first burner are disposed below the support plate and supported. A first burner opening for fitting the upper end portion of the first burner to the plate and a pair of left and right second burner openings for fitting the upper end portions of the left and right second burners are opened, and the first burner is further provided. And an ignition member for igniting the first burner and the left and right second burners is disposed so as to protrude from the support plate through a through hole formed in the support plate. And for each burner from the side in the combustion housing so that it faces the top of each of the first and second burners. In those flame sensing device is inserted,
The support plate is divided into two parts, a front plate and a rear plate. As a dividing line between the front plate and the rear plate, the support plate is used for each second burner on the rear side from the projection position below the flame detection element for each second burner. A first dividing line that reaches the lateral outer edge of the support plate from the lateral outer end of the opening, and a second burner opening from the rear edge of the first burner opening on both lateral sides of the ignition member disposition portion. A fireplace-type heater, characterized in that a second dividing line reaching the leading edge is provided.   The fireplace-type heater according to claim 1, wherein the second dividing line is formed wide so that a gap is formed between the front plate and the rear plate.   A tongue in contact with the lower surface of the edge along the second dividing line of the other plate of the front plate and the rear plate at the edge along the second dividing line of one plate of the front plate and the rear plate The fireplace-type heater according to claim 2, wherein a piece is extended and a holding piece that sandwiches the other plate is screwed between the piece and the tongue piece.

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