JP6087174B2 - Combustion device - Google Patents

Description

  The present invention relates to a heat exchanger for partitioning between a first heat exchanger and a second heat exchanger, and a burner partition member for partitioning between the first burner and the second burner in a single can. And a chamber partition member.

  For example, in Patent Document 1, a first burner and a second burner are provided side by side in the lower part of a single can body, and the first heat exchanger is provided in the upper part of the first burner. A heat exchanger is disposed above the second burner, and burner partition members that partition between the first burner and the second burner, the first heat exchanger, and the second burner. The combustion apparatus provided with the heat exchanger partition member which partitions off between these heat exchangers is disclosed. In this combustion apparatus, the heat exchanger partition member is inserted between the first heat exchanger and the second heat exchanger, is brought into contact with the upper end portion of the burner partition member, and is fixed in the can body. The exhaust tube partitioning member presses the upper end of the heat exchanger partitioning member to bring the burner partitioning member and the heat exchanger partitioning member into close contact with each other, so that there is a gap between the burner partitioning member and the heat exchanger partitioning member. Prevents formation. In this way, the combustion gas from the first burner is prevented from leaking from between the burner partition member and the heat exchanger partition member to the second heat exchanger side, or from the second burner. Is prevented from leaking from between the burner partition member and the heat exchanger partition member to the first heat exchanger side.

JP 2008-25959A

  However, in the combustion apparatus of Patent Document 1, for example, the burner partition member is fixed at a position deviated from the normal position in the can body, or the heat exchanger partition member is disposed at the normal position when the combustion apparatus is assembled. If this is not done, the burner partition member and the heat exchanger partition member cannot be brought into close contact with each other, and a gap may be formed between the burner partition member and the heat exchanger partition member. In order to prevent this, it is necessary to bring the burner partition member and the heat exchanger partition member into contact with each other with high accuracy. However, in general, when the combustion apparatus is assembled, a heat exchanger partition is formed between the two heat exchangers from the outside of the combustion apparatus in a state where the first heat exchanger and the second heat exchanger are previously incorporated in the can. The member was inserted, and it was not possible to visually confirm whether or not the burner partition member and the heat exchanger partition member were in contact with each other during the assembly operation. Therefore, in order to bring the burner partition member and the heat exchanger partition member into contact with each other with high accuracy, it takes a lot of time to assemble the combustion device, and there is a concern that the productivity of the combustion device may be reduced. It had been.

  This invention is proposed in view of such a situation, and provides a combustion apparatus that suppresses the occurrence of a gap between a burner partition member and a heat exchanger partition member while improving productivity. For the purpose.

In order to achieve the above object, according to the first aspect of the present invention, a first burner and a second burner are juxtaposed in the lower part of the apparatus main body, and the first heat exchange is performed in the apparatus main body. The heat exchanger is disposed above the first burner and the second heat exchanger is disposed above the second burner in the main body of the apparatus, and the first heat exchanger is heated by the combustion heat of the first burner. The second heat exchanger is heated by the combustion heat of the second burner, and a burner partition member for partitioning between the first burner and the second burner, and the first heat exchanger, A heat exchanger partition member for partitioning between the second heat exchanger and an insertion portion projecting to one of the burner partition member and the heat exchanger partition member There are formed, the said other, are receiving portion of the concave insertion portions is accepted is formed, and on the other, accept the insertion portion That concave to form a receiving portion, both the first heat exchanger and the second heat exchanger, is formed along the receiving direction of the insertion portion relative to the receiving part, the induction insertion portion into the receiving portion It is characterized by having a guiding part.
The invention according to claim 2 is characterized in that, in the configuration of claim 1, the width dimension of the outer surface of the insertion portion is made smaller than the width dimension of the inner surface of the receiving portion.
According to a third aspect of the present invention, in the configuration of the second aspect, the insertion portion has a wedge shape in which the width dimension decreases toward the other.
According to a fourth aspect of the present invention, in the configuration of the second or third aspect, on one side, a wide portion having a width dimension substantially the same as the width dimension of the outer surface of the receiving portion is formed on the base end side of the insertion portion. It is characterized by this.

According to the invention described in claim 1, the insertion portion is guided to the receiving portion by the guide portion, so that the insertion portion is received by the receiving portion, and the burner partition member and the heat exchanger partition member are easily and reliably connected. Since they can be combined, the productivity of the combustion apparatus can be improved. In addition to this, it is possible to suppress the occurrence of a gap between the burner partition member and the heat exchanger partition member by reliably combining the burner partition member and the heat exchanger partition member.
According to the invention described in claim 2, since the width dimension of the outer surface of the insertion portion is made smaller than the width dimension of the inner surface of the reception portion, the insertion portion is easily inserted into the reception portion. Therefore, the burner partition member and the heat exchanger partition member can be easily combined.
According to the third aspect of the present invention, since the insertion portion has a wedge shape whose width dimension decreases toward the other side, the insertion portion can be easily inserted into the receiving portion. Therefore, the combination work of the burner partition member and the heat exchanger partition member can be performed efficiently.
According to the fourth aspect of the invention, the outer surface of the receiving portion and the outer surface of the wide portion can be flush with each other in a state where the insertion portion is received by the receiving portion. Thereby, since it is suppressed that an unevenness | corrugation is formed in the vicinity of the insertion part received in the receiving part, it is suppressed that the swirl of combustion gas arises in the said vicinity, and the flow of combustion gas becomes smooth.

It is principal part sectional drawing of the combustion apparatus of embodiment of this invention. It is a whole perspective view of the heat exchanger partition member which partitions the inside of the heat exchanger can of the combustion apparatus into the hot water supply heat exchanger arrangement side and the bath reheating heat exchanger arrangement side. It is a whole front view of the same heat exchanger partition member. It is a whole side view of the same heat exchanger partition member. It is a whole top view of the same heat exchanger partition member.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows an internal structure of a main part of a single can multi-channel combustion apparatus 1 according to an embodiment of the present invention. In this combustion apparatus 1, the burner can body 3, the heat exchanger can body 4, and the exhaust can body 5 are arranged from the lower stage to the upper stage of the combustion apparatus 1 in the vertical direction (vertical direction in FIG. 1). The can body 2 is formed by sequentially fixing and stacking. In the present embodiment, the lower side of FIG. 1 is the lower side of the can body 2, and the upper side of FIG. The can body 2 is an example of the apparatus main body of the present invention.

  The burner can body 3 has a first burner group 8, a second burner group 7, and a burner partition member 9 disposed therein. As shown in FIG. 1, a first burner group 8 and a second burner group 7 each configured by arranging a plurality of burners in the left-right direction of the combustion device 1 (left-right direction in FIG. 1) However, they are arranged in parallel in the left-right direction. A blower fan (not shown) is attached to the lower side of the can body 3 for the burner (lower side in FIG. 1), and the air required for the combustion of the burner groups 7 and 8 is burned by the blower fan. Supplied inside the body 3. In the present embodiment, the combustion capacity of the first burner group 8 is made larger than the combustion capacity of the second burner group 7, and the first burner group 8 is used for hot water supply and the second burner group 7 is used for bathing. It was decided. The first burner group 8 is an example of the first burner of the present invention, and the second burner group 7 is an example of the second burner of the present invention.

  Further, as shown in FIG. 1, the burner partition member 9 is fixed to the inner surface of the burner can 3. This burner partition member 9 is erected on the bottom surface of the burner can body 2 between the first burner group 8 and the second burner group 7 in the vertical direction of the combustion device 1, and the first burner of the burner partition member 9. The side surface on the group 8 side is in contact with the first burner group 8, and the side surface on the second burner group 7 side of the burner partition member 9 is in contact with the second burner group 7. In this way, the burner partition member 9 partitions the inside of the burner can 2 into the arrangement side of the first burner group 8 and the arrangement side of the second burner group 7 in the left-right direction of the combustion device 1. ing. As shown in FIG. 1, the upper end of the burner partition member 9 protrudes into the heat exchanger can 4 beyond the upper end of the burner can 3 (upper side in FIG. 1). Further, at the upper end of the burner partition member 9, a receiving portion 12 having a receiving space 11 having a concave shape with a substantially U-shaped cross section is provided, with five surfaces except the opened upper portion being closed. The receiving space 11 is formed in the vertical direction of the combustion device 1. In addition, the receiving part 12 is provided with three surfaces other than the five faces, for example, except for two faces corresponding to both ends in the length direction of the receiving part 12 (a direction orthogonal to the left-right direction in FIG. 1). In addition, the two surfaces may be provided so that the inner surface of the heat exchanger can 4 is close to the both ends.

  Further, the heat exchanger can body 4 is provided with a bath-heating heat exchanger 14, a hot water supply heat exchanger 15, and a heat exchanger partition member 26 therein. As shown in FIG. 1, in the heat exchanger can body 4, a bath reheating heat exchanger 14 and a hot water supply heat exchanger 15 are opposed to each other with an interval in the left-right direction of the combustion device 1. Are installed side by side. This bath-heating heat exchanger 14 is arranged above the second burner group 7 inside the can body 2 as shown in the figure. The upper side of the second burner group 7 corresponds to the downstream side of the flow of combustion gas generated in the second burner group 7. In addition, a plurality of fins 16 are arranged on the outer circumferential surface of the bath-heating heat exchanger 14 in the front-rear direction orthogonal to the left-right direction of the bath-heating heat exchanger 14 (the left-right direction in FIG. 1). Each fin 16 is passed through a heat receiving pipe 17 constituted by a continuous pipe. Hot water in the bath is supplied into the heat receiving pipe 17, and the hot water is heated by the heat of the combustion gas generated in the second burner group 7 and returned to the bath. Note that the bath-heating heat exchanger 14 is an example of the second heat exchanger of the present invention, and the upper side of the second burner group 7 is an example of the upper order of the second burner of the present invention.

  Further, as shown in FIG. 1, combustion is performed on the outer surface of each fin 16 of the bath-heating heat exchanger 14 and in a portion facing each fin 21 of the hot water supply heat exchanger 15 in the left-right direction of the combustion device 1. A vertical guide portion 18 extending in the vertical direction of the device 1 is provided. In addition, each fin 16 has a notch portion 19 that is notched obliquely in the direction of approaching each fin 21 toward the upper end of the vertical guide portion 18 that is located obliquely downward from the center side of the bath-heating heat exchanger 14. It has. A cut-and-raised portion that is cut and raised in a state of projecting along the vertical direction of the combustion apparatus 1 is provided at the end of the cut-out portion 19 on the vertical guide portion 18 side. The contact portion 20 is formed along the side plate 28 and can contact the side plate 28.

  On the other hand, the hot water supply heat exchanger 15 is disposed above the first burner group 8 inside the can body 2 as shown in FIG. The upper side of the first burner group 8 corresponds to the downstream side of the flow of combustion gas generated in the first burner group 8. In addition, on the outer peripheral surface of the hot water supply heat exchanger 15, as in the case of the bath reheating heat exchanger 14, the fins 21 are arranged before and after being orthogonal to the horizontal direction of the hot water supply heat exchanger 15 (the horizontal direction in FIG. 1). A plurality are arranged in the direction. And each heat sink 22 penetrated by the fin 21 is made to penetrate. Water is supplied into the heat receiving pipe 22 from a water supply source (not shown), and the water is heated by the heat of the combustion gas and supplied to a hot water pipe (not shown). The hot water supply heat exchanger 15 is an example of the first heat exchanger of the present invention, and the upper side of the first burner group 8 is an example of the upper rank of the first burner of the present invention.

  Further, as shown in FIG. 1, on the outer surface of each fin 21 of the hot water supply heat exchanger 15, in a portion facing each fin 16 of the bath reheating heat exchanger 14 in the left-right direction of the combustion device 1, A vertical guide portion 23 extending in the vertical direction of the combustion apparatus 1 is provided. The vertical guide portion 23 is opposed to the vertical guide portion 18 (see FIG. 1) with an interval in the left-right direction, and extends in the vertical direction in parallel with the vertical guide portion 18. In addition, each fin 21 includes a notch portion 24 that is obliquely cut out in the direction of approaching each fin 16 toward the upper end of the vertical guide portion 23 located obliquely downward from the center side of the hot water supply heat exchanger 15. ing. A cut-and-raised portion that is cut and raised in a state of protruding along the vertical direction of the combustion apparatus 1 is also provided at the end of the cut-out portion 24 on the vertical guide portion 23 side. A contact portion 25 that is formed along the side plate 27 and that can contact the side plate 27 is provided.

  The heat exchanger partition member 26 shown in FIGS. 2 to 5 is accommodated so as to extend in the vertical direction of the combustion apparatus 1 between the bath-heating heat exchanger 14 and the hot water supply heat exchanger 15 as shown in FIG. To do. As a result, the heat exchanger partition member 26 is disposed inside the heat exchanger can 4 in the left-right direction of the combustion device 1 and on the side where the heat exchanger 14 for reheating the bath and the side where the heat exchanger 15 for hot water supply is provided. Partition. As shown in FIGS. 2 and 3, the lower ends of the pair of side plates 27, 28 made of stainless steel and opposed to each other are folded back so as to go from the lower end side of the side plate 27 toward the lower end side of the side plate 28. The heat exchanger partition member 26 is formed to have a substantially V-shaped bifurcated structure by being continuously provided via the folded portion 31. Here, the pair of side plates 27 and 28 are connected to the folded portion 31 so as to be elastically deformable in the contact / separation direction of the side plates 27 and 28 (left and right direction in FIG. 3).

  As shown in FIG. 3, the lower end of the side plate 27 extends in the length direction of the side plate 27 (the left-right direction in FIG. 5) by bending the lower end side of the side plate 27 inward in the horizontal direction. One flat plate portion 32 is formed. In addition, at the lower end of the side plate 28, a second flat plate extending in the length direction of the side plate 28 (left and right direction in FIGS. 4 and 5) by bending the lower end side of the side plate 28 inward in the horizontal direction inside the side plate 28. A portion 33 is formed. Further, the folded portion 31 is projected on the front end surfaces of the flat plate portions 32 and 33 in a wedge shape so that the width dimension (the horizontal dimension in FIG. 3) decreases toward the lower side from the flat plate portions 32 and 33. doing. As shown in FIG. 1, the receiving portion 12 is arranged on the lower side in the vertical direction of the combustion device 1 so as to face the gap between the heat exchanger 14 for reheating a bath and the heat exchanger 15 for hot water supply. . By doing in this way, the folding | returning part 31 protrudes toward the receiving part 12 from the front end surface of both the flat plate parts 32 and 33. FIG. As will be described later, the folded portion 31 is provided in the receiving portion 12 (FIG. 1) of the burner partition member 9 in order to combine the burner partition member 9 (see FIG. 1) and the heat exchanger partition member 26 inside the can body 2. Inserted in the reference.) In this embodiment, the width dimension of the base end part of the folding | returning part 31 was made smaller than the width dimension (dimension of the left-right direction of FIG. 1) of the receiving space 11. FIG. As shown in FIGS. 2, 4, and 5, a plurality of (here, 10) slits 35 are opened in the same direction as the length direction of the side plates 27 and 28 at the bottom of the folded portion 31. In addition, the folding | returning part 31 is an example of the insertion part of this invention, and the width dimension of the base end part of the folding | returning part 31 is an example of the width dimension of the outer surface of the insertion part of this invention. The width dimension of the receiving space 11 is an example of the width dimension of the inner surface of the receiving portion of the present invention.

  As shown in FIG. 3, each flat plate portion 32, 33 is connected to the base end portion of the folded portion 31 so as to extend to the outside of the folded portion 31 in the width direction of the folded portion 31. The dimension A between the end face on the base end side of the first flat plate portion 32 and the end face on the base end side of the second flat plate portion 33 in the direction is larger than the width dimension of the folded portion 31. In the present embodiment, the width dimension A is substantially the same as the width dimension of the outer surface of the receiving portion 12. In addition, the base end part of the folding | returning part 31 is an example of the base end part side of the insertion part of this invention, and each flat plate part 32 and 33 is an example of the wide part of this invention.

  Further, as shown in FIG. 2, the side plate 27 is provided with reinforcing portions 36 and 37. The reinforcing portions 36 and 37 are formed by bending both end portions of the side plate 27 in the length direction to the inside of the side plate 27 at a substantially right angle with the side plate 27. The reinforcing portions 36 and 37 can suppress the side plate 27 from being bent in the vertical direction. The side plate 28 is also provided with reinforcing portions 38 and 39 similar to the side plate 27. In addition, a receiving portion 40 is provided on the upper end surface of the side plate 17 integrally with the upper end surface. The receiving portion 40 has a flat plate shape that protrudes laterally from the upper end surface to the inside of the side plate 27 and protrudes to the outside of the side plate 27 in the length direction of the side plate 27. As will be described later, the receiving portion 40 is pressed downward by the pressing portion 43 of the exhaust can 5.

  As shown in FIG. 1, the exhaust can 5 introduces combustion gas that has passed through the bath-heating heat exchanger 14 and combustion gas that has passed through the hot water supply heat exchanger 15. A second exhaust port (not shown) is formed on the left side of the front surface of the exhaust can 5 and a second exhaust port (not shown) is formed on the front right side of the exhaust can 5. . In this embodiment, as will be described later, the combustion gas that has passed through the bath-heating heat exchanger 14 is discharged to the outside of the exhaust can 5 through the second exhaust port. On the other hand, the combustion gas that has passed through the hot water supply heat exchanger 15 is discharged to the outside of the exhaust can 5 through the first exhaust port. An exhaust can body partitioning member is provided on the inner surface of the exhaust can body 5 between the first exhaust port and the second exhaust port in the left-right direction of the exhaust can body 5 (left-right direction in FIG. 1). 42 (hereinafter referred to as “partition member 42”) is fixed. The partition member 42 extends in the vertical direction of the combustion device 1, and the inside of the exhaust can 5 is formed in the left-right direction of the combustion device 1 between the first exhaust port formation side and the second exhaust port formation side. Partitioning. The partition member 42 is provided with a pressing portion 43. The pressing portion 43 is formed by bending the lower end portion of the partition member 42 at a substantially right angle with the partition member 42. When the heat exchanger partition member 26 is accommodated between the bath-heating heat exchanger 14 and the hot water supply heat exchanger 15 and the exhaust can 5 is stacked on the heat exchanger can 4 and fixed, the presser The portion 43 is configured to press the receiving portion 40 (see FIGS. 2 and 3) of the heat exchanger partition member 26 downward in the combustion device 1.

  Next, the operation | movement etc. which combine the burner partition member 9 and the heat exchanger partition member 26 are demonstrated. As shown in FIG. 1, the heat exchanger can body 4 is stacked and fixed on the burner can body 3 by fastening screws to the upper end flange of the burner can body 3 and the lower end flange of the heat exchanger can body 4. Thereafter, the heat exchanger partitioning member 26 shown in FIGS. 2 to 5 is directed from the upper side of the heat exchanger can 4 toward the lower side of the combustion apparatus 1, and the bath reheating heat exchanger 14 and the hot water supply heat exchanger 15. Push between. At that time, the pair of side plates 27 and 28 are elastically deformed in a direction approaching each other with the folded portion 31 as a fulcrum, and follow the bath guide along the vertical guide portion 18 of the fin 16 and the vertical guide portion 23 of the fin 21. It progresses below the can 4 for heat exchangers between the heating heat exchanger 14 and the hot water supply heat exchanger 15. At this time, since the formation direction of the vertical guide portions 18 and 23 (the vertical direction of the combustion apparatus 1) is the same as the formation direction of the receiving space 11 of the receiving portion 12 provided in the burner partition member 9, a pair of side plates The folded portions 31 connected to the 27 and 28 are guided toward the receiving space 11. In addition, since the folded portion 31 has a wedge shape, the heat exchanger partition member 26 is placed between the heat exchanger 14 for reheating the bath and the heat exchanger 15 for hot water supply. By sequentially pushing downward, the folded portion 31 can be easily inserted into the receiving space 11. Furthermore, since the width dimension of the base end part of the folding | returning part 31 is also smaller than the width dimension of the receiving space 11, it becomes easy to insert the folding | returning part 31 in the receiving space 11. FIG. Because of this, the burner partition member 9 and the heat exchanger partition member 26 can be combined easily and reliably. In addition, the vertical guide parts 18 and 23 are examples of the induction | guidance | derivation part of this invention, and the up-down direction of the combustion apparatus 1 is an example of the acceptance direction of the insertion part with respect to the reception part of this invention.

  Further, as shown in FIGS. 2, 4, and 5, by opening a plurality of slits 35 in the folded-back portion 31, the rigidity of the folded-back portion 31 is reduced, and the pair of side plates 27, 28 support the folded-back portion 31. It becomes easy to elastically deform in the direction of mutual contact. Thereby, as shown in FIG. 1, after the folded portion 31 is inserted into the receiving space 11, the side plate 27 comes into pressure contact with the vertical guide portion 23 (fin 21) by the elastic return force, and the side plate 27, the vertical guide portion 23, and the like. It becomes easy to closely. Therefore, it can suppress that a clearance gap produces between the side plate 27 and the vertical guide part 23. FIG. In addition, the side plate 28 is also brought into pressure contact with the vertical guide portion 18 (fin 16) by the elastic restoring force, and it is possible to suppress the occurrence of a gap between the side plate 28 and the vertical guide portion 18. In addition, the side plate 27 is pressed against the abutting portion 25 of the notch 24 by the elastic restoring force, and the side plate 27 can be brought into close contact with the abutting portion 25 without rattling. Therefore, it is possible to suppress the occurrence of a gap between the side plate 27 and the contact portion 25. Since the side plate 28 is also pressed against the contact portion 20 of the notch portion 19 by the elastic restoring force, it is possible to suppress a gap from being generated between the side plate 28 and the contact portion 20.

  Subsequently, the exhaust can body 5 is fastened to the upper end flange of the heat exchanger can body 4 with a screw, so that the exhaust can body 5 is stacked and fixed on the heat exchanger can body 4. Thereby, as shown in FIG. 1, the holding portion 43 presses the receiving portion 40 (see FIGS. 2 and 3) of the heat exchanger partition member 26 downward. As a result of the above, the heat exchanger partition member 26 and the burner partition member 9 are combined in a state where the presser portion 43 is in close contact with the heat exchanger partition member 26. Therefore, the inside of the can 2 can be partitioned into a bath retreating space 45 and a hot water supply space 46 in the left-right direction of the combustion device 1. In the bath chasing space 45, a gap is not easily formed between the side plate 28 and the vertical guide portion 18 or between the side plate 28 and the contact portion 20 of the notch portion 19, and thus occurs in the second burner group 7. The combustion gas is prevented from leaking from the gap. As a result, the bath-heating heat exchanger 14 can stably receive the heat of the combustion gas. In the bath reheating space 45, the combustion gas generated in the second burner group 7 is guided to the second exhaust port after passing through the bath reheating heat exchanger 14. The combustion gas is discharged to the outside of the exhaust can 5 through the second exhaust port.

  On the other hand, in the hot water supply space 46, it is difficult for a gap to be formed between the side plate 27 and the vertical guide portion 23, or between the side plate 27 and the contact portion 25 of the notch portion 24. Therefore, the combustion generated in the first burner group 8 Gas is prevented from leaking from the gap. As a result, the hot water supply heat exchanger 15 can stably receive the heat of the combustion gas. In the hot water supply space 46, the combustion gas generated in the first burner group 8 passes through the hot water supply heat exchanger 15 and is then guided to the first exhaust port. The combustion gas is discharged to the outside of the exhaust can 5 through the second exhaust port. In this case, since the width dimension A shown in FIG. 3 is made substantially the same as the width dimension of the outer surface of the receiving portion 12, the outer surface of the receiving portion 12 and the outer surfaces of the pair of side plates 27 and 28 are substantially faced. Can be one. Thereby, it is possible to suppress the formation of irregularities in the vicinity of the folded portion 31 inserted into the receiving space 11. Therefore, it is possible to suppress the vortex flow of the combustion gas generated in each burner group 7 and 8 in the vicinity.

<Effect of this embodiment>
In the combustion apparatus 1 of the present embodiment, the folded portion 31 of the heat exchanger partition member 26 is guided to the receiving space 11 of the burner partition member 9 by the both vertical guide portions 18 and 23, so that the folded portion 31 receives the space. 11, the burner partition member 9 and the heat exchanger partition member 26 can be combined easily and reliably, so that the productivity of the combustion apparatus 1 can be improved. In addition to this, by combining the burner partition member 9 and the heat exchanger partition member 26 with certainty, it is possible to suppress the occurrence of a gap between the burner partition member 9 and the heat exchanger partition member 26.

  Moreover, since the width dimension of the base end part of the folding | returning part 31 was made smaller than the width dimension of the receiving space 11, the folding | returning part 31 becomes easy to be inserted in the receiving space 11. FIG. Therefore, the burner partition member 9 and the heat exchanger partition member 26 can be easily combined.

  Further, since the folded portion 31 is formed in a wedge shape whose width dimension decreases toward the receiving space 11, the folded portion 31 can be easily inserted into the receiving space 11. Therefore, the combination work of the burner partition member 9 and the heat exchanger partition member 26 can be performed efficiently.

  In addition, in a state where the folded portion 31 is inserted into the receiving space 11, the outer surface of the receiving portion 12 and the outer surfaces of the pair of side plates 27 and 28 can be made substantially flush. Thereby, it is possible to suppress the formation of irregularities in the vicinity of the folded portion 31 inserted into the receiving space 11. Accordingly, the vortex flow of the combustion gas generated in each of the burner groups 7 and 8 is suppressed in the vicinity, and the flow of the combustion gas in the bath retreating space 45 and the hot water supply space 46 becomes smooth.

  In the combustion apparatus 1 of the present embodiment, when the side plate 28 constituting the heat exchanger partition member 26 is in pressure contact with the vertical guide portion 18 of the heat exchanger 14 for bathing, the side plate 28 comes into close contact with the vertical guide portion 18. Further, it is possible to suppress a gap from being generated between the side plate 28 and the vertical guide portion 18. Thereby, since the combustion gas generated in the second burner group 7 is suppressed from leaking through the gap, the bath-heating heat exchanger 14 can stably receive the heat of the combustion gas. Therefore, the thermal efficiency of the heat exchanger 14 for bathing can be improved. In addition, when the side plate 27 constituting the heat exchanger partition member 26 is in pressure contact with the vertical guide portion 23 of the hot water supply heat exchanger 15, the side plate 27 is in close contact with the vertical guide portion 23. It is possible to suppress the formation of a gap between the two. Thereby, since the combustion gas generated in the first burner group 8 is suppressed from leaking from the gap, the hot water supply heat exchanger 15 can stably receive the heat of the combustion gas. Therefore, the thermal efficiency of the hot water supply heat exchanger 15 can be improved.

  In addition, since a plurality of slits 35 are opened in the folded portion 31, the rigidity of the folded portion 31 is lowered, and the pair of side plates 27 and 28 are easily elastically deformed in the contact / separation direction of each other. Therefore, the side plate 27 is pressed against the vertical guide portion 23 of the hot water supply heat exchanger 15 by the elastic restoring force, and the side plate 27 and the vertical guide portion 23 are easily brought into close contact with each other. In addition, the side plate 28 is also brought into pressure contact with the vertical guide portion 18 of the bath-heating heat exchanger 14 by the elastic restoring force, so that the side plate 28 and the vertical guide portion 18 are easily brought into close contact with each other.

  Further, the side plate 27 can be pressed against the contact portion 25 of the notch portion 24 of the hot water supply heat exchanger 15 by the elastic restoring force so that the side plate 27 can be brought into close contact with the contact portion 25 without rattling. Therefore, it is possible to suppress the occurrence of a gap between the side plate 27 and the contact portion 25. Since the side plate 28 is also pressed against the contact portion 20 of the notch portion 19 of the bath-heating heat exchanger 14 by the elastic return force, it is possible to suppress the generation of a gap between the side plate 28 and the contact portion 20. .

  The present invention is not limited to the above-described embodiment, and can be implemented by appropriately changing a part of the configuration without departing from the spirit of the invention. In the embodiment described above, the example in which the receiving portion 12 is provided in the burner partition member 9 and the folded portion 31 is provided in the heat exchanger partition member 26 is shown, but instead, the folded portion is provided in the burner partition member 9. The heat exchanger partition member 26 may be provided with a receiving portion into which the folded portion is inserted.

  Further, unlike the above-described embodiment, the can body may be formed by connecting the can body for the burner, the can body for the heat exchanger, and the can body for the exhaust in a state where they are arranged horizontally. Further, unlike the embodiment described above, the folded portion 31 may be formed without providing the slit 35, or the heat exchanger partition member may be formed using a pair of side plates that are not provided with the reinforcing portions 36 to 39. . Furthermore, by making the width dimension of the base end portion of the folded portion 31 substantially the same as the width dimension of the receiving space 11, when the folded portion 31 is inserted into the receiving space 11, the space between the receiving space 11 and the folded portion 31. You may make it difficult to produce a clearance gap between them.

  1 .. Combustion device, 2 .. Can body, 7 .. 2nd burner group, 8 .. 1st burner group, 9 .. Burner partition member, 12 .. Receiving part, 14. ··· Heat exchanger for hot water supply, 18, 23 ··· Vertical guide portion, 19, 24 ··· Notch portion, 20, 25 · · Contact portion of notch portion, 26 · · Heat exchanger partition member 27, 28... A pair of side plates 31.. Folded portion 32.. First flat plate portion 33 33 Second flat plate portion 35.

Claims (4)

A first burner and a second burner are juxtaposed in the lower part of the apparatus main body, and the first heat exchanger is arranged in the apparatus main body above the first burner in the apparatus main body. A second heat exchanger is disposed above the second burner, the first heat exchanger is heated by the combustion heat of the first burner, and the combustion heat of the second burner is used. A burner partition member for partitioning the first burner and the second burner so that the second heat exchanger is heated; and the first heat exchanger and the second heat exchange. A heat exchanger partitioning member for partitioning between the heat exchanger and the combustion device,
One of the burner partition member and the heat exchanger partition member is formed with an insertion portion projecting to the other, and the other is formed with a concave receiving portion for receiving the insertion portion,
Both the first heat exchanger and the second heat exchanger are formed along the receiving direction of the insertion portion with respect to the receiving portion, and the insertion portion is guided to the receiving portion. A combustion apparatus comprising:   The combustion apparatus according to claim 1, wherein a width dimension of an outer surface of the insertion portion is made smaller than a width dimension of an inner surface of the receiving portion.   The combustion apparatus according to claim 2, wherein the insertion portion has a wedge shape in which the width dimension decreases toward the other side.   4. The combustion apparatus according to claim 2, wherein a wide portion having a width dimension substantially the same as a width dimension of the outer surface of the receiving portion is formed on the one end on the base end side of the insertion portion. .

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