JP2011027352A - Heat source machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat source machine capable of avoiding dimension errors during assembly and of each component and deterioration of blocking performance caused by deviation etc. due to vibration etc. during conveyance without damaging easy assembling performance and of securely preventing leakage of combustion exhaust gas between a plurality of water paths. <P>SOLUTION: Guide parts 92, 92 are formed at an upper end 91 of a burner partition member 9 partitioning a first burner and a second burner, and a packing 12 as a dimension absorbing body is installed between the guide parts 92, 92. A projection 102 is formed at a lower end 101 of a heat exchanger partition member 10 partitioning a first heat exchanger and a second heat exchanger. The lower end 101 of the heat exchanger partition member 10 is jointed to the upper end 91 of the burner partition member 9 so that the projection 102 is internally fitted to a recessed groove 121 of the packing 12. Thus, deviation of a vertical relative interval caused by dimension errors etc. is absorbed by the packing 12, so as to maintain the blocking performance. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a heat exchanger for a first water channel (for example, a hot water supply circuit), a burner for heating the heat exchanger, a heat exchanger for a second water channel (for example, a bath reheating circuit or a hot water heating circuit), and The present invention relates to a heat source machine configured in a single can multi-channel system by installing a plurality of water channels including a burner for heating the same in a single can body. In particular, it is possible to reliably shut off the combustion chambers including the heat exchangers and the like constituting a plurality of water passages, and to cause the combustion exhaust gas generated by the combustion heating operation on one water passage side to leak to the other water passage side. The present invention relates to a technique for ensuring avoidance.

  Conventionally, as a heat source machine of this type, a partition plate is disposed between a heat exchanger and burner for the first water channel and a heat exchanger and burner for the second water channel in a single can body, The partition plate is known to partition the first water channel portion and the second water channel portion from each other (see, for example, Patent Document 1).

JP 2008-25959A

  However, if the partition plate is arranged as described above, it may be affected by assembly errors of the heat source machine, dimensional errors of each component of the heat source machine, etc. Due to the influence of vibration such as horizontal holding, a gap is generated in the partition plate, and there is a risk that leakage of combustion exhaust gas may occur between the first water channel and the second water channel.

  If the combustion exhaust gas leaks, the following various disadvantages occur. That is, unexpectedly hot water is supplied at the beginning of operation of the leaked water channel. That is, one side of the water channel is operated by combustion heating, and the combustion exhaust gas leaks to the other water channel side in the operation stop state, and the other water channel side is also heated. There is a risk of hot water being supplied. Also, in general, as a supply control of combustion air, as a countermeasure against fin clogging of heat exchangers due to aging, if exhaust resistance increases due to clogging of fins, the rotational speed of the blower fan is increased and a predetermined amount of combustion is performed. However, if such a leak occurs, it will be difficult to properly detect an increase in exhaust resistance, and as a result, it will be difficult to properly control the supply of combustion air. There is a risk of going crazy. Furthermore, if a leak occurs, the partition plate in the vicinity of the leak path may be blown by the flame exhaust gas and become excessively hot, resulting in a problem in durability. Further, when the combustion exhaust gas leaks, the thermal efficiency of the water channel on the combustion operation side may be lowered due to the leak.

  On the other hand, a single-can multi-channel heat source machine is generally formed by joining and integrating components such as a burner part containing a combustion burner and a heat exchanger part containing a heat exchanger. Since it is configured so as to be assembled, if only the blocking performance by the partition plate is pursued, it may be possible to impair the ease of assembly in assembling and integrating the heat source machine.

  The present invention has been made in view of such circumstances, and the object of the present invention is to reduce dimensional errors of components and components, vibration during transportation, and the like without compromising easy assembly. An object of the present invention is to provide a heat source apparatus that can prevent the occurrence of deterioration of the shut-off performance due to the deviation caused by the shut-off so as not to cause a leak of combustion exhaust gas between a plurality of water channels.

  In order to achieve the above object, in the present invention, 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, the first heat exchanger is heat exchange heated by the combustion heat of the first burner, and the second heat exchanger is heat exchange heated by the combustion heat of the second burner. A burner partition member configured to partition between the first burner and the second burner, and a heat exchanger partition member configured to partition between the first heat exchanger and the second heat exchanger. The following specific items were prepared for the heat source equipment. That is, it is interposed between the upper end of the burner partition member and the lower end of the heat exchanger partition member, and is sandwiched between the upper and lower portions of the burner partition member and the heat exchanger partition member so that the vertical push A dimension absorber that is elastically deformed, elasto-plastically deformed, or plastically deformed under pressure is provided. Then, by joining the lower end portion of the heat exchanger partition member to the upper end portion of the burner partition member via a dimension absorber, the vertical direction relative of the burner partition member side and the heat exchanger partition member side is increased. The gap of the interval is assembled so that it can be absorbed (claim 1).

  In the case of this invention, since the dimension absorber is joined in a state of being interposed between the upper and lower ends of the burner partition member and the lower end portion of the heat exchanger partition member, Even if a dimensional error or a deviation due to vibration during transportation, etc. occurs, a deviation in the relative distance in the vertical direction is absorbed by the dimensional absorber, and it is continuously generated by the burner partition member and the heat exchanger partition member. The partition state is maintained. For this reason, the generation | occurrence | production of the clearance gap which causes the leakage of combustion exhaust gas between a burner partition member and a heat exchanger partition member is prevented reliably, and reliable interruption | blocking performance is maintained. In addition, since the assembly or assembling work only involves joining the lower end of the heat exchanger partition member to the upper end of the burner partition member via a dimension absorber, the ease of assembly or assembly work is impaired. Nor.

  The dimension absorber in the present invention can be formed of an elastic material (claim 2). By forming with an elastic material (for example, packing), it is possible to more surely realize deviation absorption of the relative distance in the vertical direction between the burner partition member side and the heat exchanger partition member side based on elastic deformation or elastic recovery, Thus, the operation of the invention according to claim 1 can be realized with certainty.

  Further, a guide portion that protrudes in the vertical direction from both horizontal positions of the dimension absorber can be formed on either the upper end portion of the burner partition member or the lower end portion of the heat exchanger partition member. 3). In this way, the installation position of the dimension absorber can be guided and easily positioned, and the function of holding the dimension absorber so as not to be displaced by installing it between the two guide portions is also provided. It will be possible. In addition, it is possible to prevent the dimension absorber from being flattened in the horizontal direction by both guide portions, and the dimension absorber will sag even if it receives a pressing force from the heat exchanger partition member side. Can be suppressed.

  Furthermore, a protrusion projecting in the vertical direction toward the dimension absorber can be formed on either the upper end of the burner partition member or the lower end of the heat exchanger partition member. 4). In this way, when the heat exchanger partition member is pressed against the burner partition member from above and below with the dimension absorber sandwiched in between, the projections first contact the dimension absorber. As a result, the joining of the two is ensured and the blocking performance is improved. In this case, by forming a recessed groove portion that opens on the surface opposite to the protruding portion with respect to the dimension absorber (Claim 5), the protruding portion is first fitted into the recessed groove portion and bites into the recessed portion. Therefore, it becomes possible to further improve the blocking performance.

  As described above, according to the heat source apparatus of any one of claims 1 to 5, the dimension absorber is interposed between the upper and lower portions of the upper end portion of the burner partition member and the lower end portion of the heat exchanger partition member. Since they are joined in the mounted state, even if a dimensional error or assembly error of each component, or a deviation due to vibration during transportation, etc. occurs, the relative in the vertical direction associated therewith The gap in the interval can be absorbed by the dimension absorber, and a continuous partition state by the burner partition member and the heat exchanger partition member can be maintained. For this reason, it is possible to reliably prevent the occurrence of a gap between the burner partition member and the heat exchanger partition member, which causes a leak of combustion exhaust gas, and maintain a reliable shut-off performance. In addition, since the assembly or assembling work only involves joining the lower end of the heat exchanger partition member to the upper end of the burner partition member via a dimension absorber, the ease of assembly or assembly work is impaired. Nor.

  In particular, according to claim 2, by forming the dimension absorber with an elastic material, it is possible to absorb the shift in the relative distance between the burner partition member side and the heat exchanger partition member side based on elastic deformation or elastic recovery. Can be more reliably realized, and the above-described effects can be obtained with certainty.

  According to the third aspect, by forming the guide portion, it is possible to guide the installation position of the dimension absorber to realize easy positioning, and the dimension absorber is displaced by being installed between the two guide portions. It is possible to realize the function of holding the information so that it does not occur. In addition, it is possible to suppress flattening of the dimension absorber in the horizontal direction by both guide portions, and it is possible to cause the dimension absorber to sag even if it receives a pressing force from the heat exchanger partition member side. It becomes possible to suppress.

  According to the fourth aspect, when the protrusion is formed, the protrusion is dimensioned when the heat exchanger partition member is pressed against the burner partition member from above and below with the dimension absorber interposed therebetween. By first contacting the absorber, the joining of the two can be ensured, and the blocking performance can be improved. In this case, by further forming the groove portion in the dimension absorber as in claim 5, the projection portion is first fitted into the groove portion and bites into the groove portion, so that the blocking performance can be further improved. It becomes like this.

It is a section explanatory view showing a 1st embodiment of the present invention. FIG. 2 is an exploded explanatory view of FIG. 1. It is a partially cutaway explanatory view showing a second embodiment. FIG. 4 is an exploded explanatory view of FIG. 3. FIG. 4 is a partially enlarged view of FIG. 3. It is a disassembled perspective view of the structural member of FIG. FIG. 6 is a view corresponding to FIG. 5 illustrating another embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 shows a can body of a heat source machine according to a first embodiment having the basic principle of the present invention. This heat source machine has a first burner 31 and a first heat exchanger 32 for a first water channel (for example, a hot water supply circuit) and a second water channel (for example, a reheating circuit for a bath or hot water) for a single can 2. Both the second burner 41 and the second heat exchanger 42 for the circulation type heating circuit) are incorporated. That is, the can body 2 is configured in a single can / two water channel type.

  The can body 2 is formed by joining the burner part 21, the heat exchanger part 22, and the collective exhaust pipe part 23 so as to be stacked in this order. The burner unit 21 has a blower fan 24 attached to a lower position or the like. The first burner 31 is preliminarily placed in one side in the horizontal direction (the right side in the figure) and the second burner 41 is placed in the other side in the horizontal direction (in the figure). It is installed at each position on the left side of the figure). The heat exchanger section 22 is configured such that a first heat exchanger 32 is installed in advance in one side in the horizontal direction and a second heat exchanger 42 is installed in each position on the other side in the horizontal direction inside a cylindrical case 221. It is. Then, a first combustion chamber 33 is partitioned and formed in a space between the first burner 31 and the first heat exchanger 32 by a burner partition member 5 and the like which will be described later, and the second burner 41 and the second heat exchanger. The second combustion chamber 43 is partitioned by the above-described burner partition member 5 and the like in the space between the second combustion chamber 43 and the like. Each of the heat exchangers 32 and 42 is configured in a fin-and-tube type from a large number of fins 321 and 421 and water pipes 322 and 422 passing through the fins 321 and 421. In addition, the 1st burner 31 and the 2nd burner 41 are each comprised by the combination of the single or several unit burner (combustion pipe).

  In the collective exhaust cylinder portion 23, a first communication port 232 is formed at one position in the horizontal direction of the case 231, for example, and a second communication port 233 is formed at the other position. The flue gas after passing through the first heat exchanger 32 is sent to the secondary heat exchanger for recovering latent heat outside the figure for the first water channel through the first communication port 232 and passes through the second heat exchanger 42. The combustion exhaust gas after being sent is sent to the secondary heat exchanger for recovering latent heat outside the figure for the second water channel through the second communication port 233. In addition, this embodiment and this invention can be applied also to the heat source machine which does not mount the secondary heat exchanger for latent heat recovery as mentioned above.

  And the inside of the can body 2 is partitioned into a horizontal one side portion and the other side portion by a lower burner partition member 5, a heat exchanger partition member 6 at an upper and lower intermediate position, and an exhaust tube partition member 25. It is separated. The burner partition member 5, the heat exchanger partition member 6, and the exhaust tube partition member 25 are assembled so that the burner portion 21, the heat exchanger portion 22, and the collective exhaust tube portion 23 are coupled to each other in the vertical direction. In the integrated state, the end portions adjacent in the vertical direction are in contact with each other (preferably in a close contact state), and the three partition members 5, 6, 25 are continuously connected in the vertical direction. An integral partition is formed. At this time, the dimension absorber 7 having a predetermined thickness is interposed between the burner partition member 5 and the heat exchanger partition member 6 so as to be integrated and integrated.

  As shown in FIG. 2, the burner partition member 5 is attached and fixed in advance to the inner surface of the case 211 of the burner portion 21. That is, between the first burner 31 and the second burner 41, both burners 31, 41 are fixed to the case 211 in a state of being inserted from above or below so as to be separated from each other, and the upper end protrudes upward. The free end. The burner partition member 5 in the figure is formed in a plate shape having an internal space by folding back a plate material, and is formed so that the upward end surface 51 of the upper end becomes a flat surface. The heat exchanger partition member 6 is inserted from above or below so as to partition and separate the heat exchangers 32, 42 between the first heat exchanger 32 and the second heat exchanger 42. In this state, the heat exchangers 32 and 42 are fixed to the fins 321 and 421 of the heat exchangers 32 and 42, and / or both end portions thereof are fixed to the inner surface of the case 221.

  The burner partitioning member 5 and the heat exchanger partitioning member 6 are folded into a shape such as a U-shaped cross section using a metal thin plate material (for example, a stainless steel plate or a copper thin plate material) as shown in the figure. It is configured by forming a bend or by using a heat-resistant synthetic resin plate having an equivalent predetermined thickness. Further, the dimension absorber 7 has heat resistance and is elastically deformed, elastic-plastically deformed, or plastically deformed so that the burner portion 21 and the heat exchanger portion 22 are stacked to form the can body 2 of the heat source machine. Assembly errors in the case of integrating them, and dimensional errors in manufacturing in the vertical direction of the can bodies 21 and 22 etc. are absorbed. A heat-resistant packing having elasticity or elasto-plasticity may be used to absorb dimensional errors by elastic deformation or elasto-plastic deformation, and a compressive force may be used to absorb dimensional errors by elasto-plastic deformation or plastic deformation. A soft metal piece that can be plastically flowed may be used. Then, the dimension absorber 7 is temporarily placed or bonded to the upper end of the burner partition member 5 as shown in the drawing, or is bonded to the lower end of the heat exchanger partition member 6 in advance. It is attached to members 5 and 6.

  And the can 2 is assembled as follows. First, the heat exchanger unit 22 is attached to the burner unit 21 from above the burner unit 21 (see FIG. 2). This attachment may be performed using means such as screwing the flanges 212 and 222 of the cases 211 and 221 together. Thereby, the lower end of the heat exchanger partition member 6 is joined to the upper end of the burner partition member 5 so as to be slightly pressed with the dimension absorber 8 interposed therebetween, and the heat exchanger partition member 6 and the burner partition member 5 Are integrated into a state of contact or close contact. Then, the collective exhaust tube portion 23 is attached to the heat exchanger portion 22 from above. Similarly to the above, this attachment may be achieved by connecting both flanges of the cases 221 and 231 using means such as screws. With this attachment, the lower end of the exhaust tube partition member 25 comes into contact with the upper end of the heat exchanger partition member 6. That is, in the above assembly, the dimensional setting (difference setting) is set so that the lower end of the heat exchanger partition member 6 is joined to the pressing side with the dimension absorber 7 interposed between the upper end of the burner partition member 5. ) And the dimension error associated with the dimension setting is absorbed by the dimension absorber 7 described above.

  As described above, even if an assembly dimension error occurs due to a manufacturing dimension error of each member, the dimension error is absorbed and the burner partition member 5 and the heat exchanger partition member 6 are brought into contact with each other reliably. Can be maintained. Therefore, the combination of the burner partition member 5, the heat exchanger partition member 6 and the dimension absorption pair 7 allows the inside of the can body 2 to have the components 31 and 32 for the first water channel and the combustion without sacrificing the ease of assembly work. The chamber 33, the second waterway components 41, 42 and the combustion chamber 43 can be completely separated and blocked from each other, and a gap is generated between both the burner partition member 5 and the heat exchanger partition member 6. Can be reliably prevented and kept in close contact with each other. Thereby, combustion gas and combustion exhaust gas from the first burner 31 leak to the second water channel side, or conversely, combustion gas and combustion exhaust gas from the second burner 41 leak to the first water channel side. Thus, it is possible to reliably avoid the occurrence of inconvenience due to the leak.

Second Embodiment
FIG. 3 shows a can body 8 of a heat source machine according to a second embodiment that further embodies the present invention. This second embodiment is the same as the first embodiment except for the point that it is more specific than the first embodiment. Components having the same configuration as that of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and detailed description thereof is omitted.

  Similarly to the first embodiment, the can body 8 of the present embodiment is also configured as a single can and two water channel type, and the burner portion 81, the heat exchanger portion 82, and the collective exhaust tube portion 83 are connected to the can body 8. They are stacked and joined in order, and a secondary heat exchange section 84 is joined to the uppermost part (see also FIG. 4). In the burner unit 81, the blower fan 24 is attached to the lower position, the first burner 31 is preliminarily placed in one side in the horizontal direction (the right side in FIG. 3), and the second burner 41 is placed in the other side in the horizontal direction (same as above) The left and right burners 31 and 41 are separated from each other by the burner partition member 9. In the heat exchanger section 82, a first heat exchanger 32 is installed in advance in one side in the horizontal direction and a second heat exchanger 42 is installed in each position on the other side in the horizontal direction inside a cylindrical case 821. The heat exchangers 32 and 42 are blocked from each other by the heat exchanger partition member 10. The first combustion chamber 33 is partitioned by the burner partitioning member 9 and the like in the space between the first burner 31 and the first heat exchanger 32, and the second burner 41 and the second heat exchanger are formed. The second combustion chamber 43 is partitioned by the burner partition member 9 or the like in the space between the second combustion chamber 43 and the like.

  The collective exhaust cylinder portion 83 is opened at the lower surface so as to cover the upper opening of the heat exchanger portion 82, and the inside is the first collective portion 34 on one side in the horizontal direction by the exhaust tube partition member 11 and the first collective portion 34 on the other side in the horizontal direction. The upper surface 832 is inclined upwardly toward the rear (back in the direction orthogonal to the paper surface of FIG. 4), and communication holes 833 and 834 are respectively provided at the innermost positions of the upper surface 832. Is formed. The secondary heat exchange unit 84 is partitioned in a state where the internal space is partitioned into one side in the horizontal direction and the other side, and the secondary heat exchanger 35 for the first water channel is accommodated in one side in the horizontal direction, and the horizontal direction A secondary heat exchanger 45 for the second water channel is accommodated on the other side. The flue gas after passing through the first heat exchanger 32 is collected in the first collecting portion 34 and sent to the secondary heat exchanger 35 through the communication hole 833 for latent heat recovery, while the second heat exchange. The flue gas after passing through the vessel 42 is collected in the second collecting portion 44 and sent to the secondary heat exchanger 45 through the communication hole 834 for latent heat recovery. The combustion exhaust gas after the latent heat recovery is discharged to the outside from the front exhaust port 841 of the secondary heat exchange unit 84.

  And the inside of the can 8 integrated by assembly is the burner partition member 9 in the burner part 81, the heat exchanger partition member 10 in the heat exchanger part 82, and the exhaust pipe in the collective exhaust pipe part 83. The partition member 11 is divided into a horizontal one side portion and another side portion and separated. The burner partition member 9 and the heat exchanger partition member 10 are in a state (preferably in a close contact state) in which the end portions adjacent to each other in the vertical direction are in contact with each other via a packing 12 as a dimension absorber, The heat exchanger partition member 10 and the exhaust tube partition member 11 are in a state in which the portions adjacent in the horizontal direction are in contact with each other, and the three partition members 9, 10, 11 are continuously partitioned in the vertical direction. It is designed to form a body.

  Hereinafter, the partition body will be described in detail. The burner partition member 9 (see FIG. 5 or FIG. 6) is made of a heat-resistant thin plate material (for example, a thin plate material made of stainless steel) having a U shape or an inverted U shape. The upper end 91 has a flat surface with a predetermined width and is formed in a shape opened to the lower combustion air supply side. The burner partition member 9 is attached and fixed in advance by being inserted from above into the gap between the first burner 31 and the second burner 41 in the burner portion 81, and the upper end portion 91 is fixed to the burner portion. It protrudes to a position almost at the same level as the upper opening of 81 and is a free end (see FIG. 4). The upper end portion 91 is formed with guide portions 92 and 92 protruding upward from both side positions in the width direction (left and right direction in FIG. 5). The inner width dimensions of the guide portions 92 and 92 on both sides are set so as to correspond to the outer width of the packing 12 and to be slightly larger than the outer width, and the protruding height of the guide portions 92 and 92 is The heat exchanger partition member 10 is set so as not to interfere with the heat exchanger partition member 10 in a state where the heat exchanger partition member 10 is joined. The guide portions 92 and 92 serve to guide the installation position of the packing 12 and to hold the packing 12 so as not to be displaced by being installed (simply placed or bonded) between the guide portions 92 and 92. become. In addition, by suppressing the flattening of the packing 12 in the horizontal direction by both guide portions 92, 92, it is possible to suppress the sag from occurring in the packing 12 due to the pressure from the heat exchanger partition member 10 side. Like to do.

  The heat exchanger partition member 10 has a predetermined thickness as a whole by bending a heat-resistant thin plate material (for example, a stainless steel thin plate material or a copper thin plate material) into a U shape or a U shape. The lower end portion 101 has a predetermined shape portion and is formed in a shape opened upward. The heat exchanger partition member 10 is fixed in advance by being inserted into the gap between the first heat exchanger 32 and the second heat exchanger 42 in the heat exchanger portion 82 from the bottom to the top. As a result, the lower end portion 101 is protruded downward from both the heat exchangers 32 and 42. The lower end portion 101 is integrally formed with a protruding portion 102 that protrudes downward from the lower end surface, and convex portions 103 and 103 that protrude sideways from predetermined positions on both side surfaces to form upward stepped portions. ing. The protrusions 102 are formed continuously over the entire length of the heat exchanger partition member 10, and the upper surface of the packing 12 has a shape corresponding to the protrusions 102 and is preferably slightly smaller than the amount of protrusion and a concave groove 121 that is recessed downward. Is formed over its entire length. Accordingly, when the heat exchanger partition member 10 is pressed against the burner partition member 9 and the packing 12 from above, the protruding portion 102 bites into the concave groove portion 121 so as to further improve the blocking performance. It has become. Further, when the heat exchanger partitioning member 10 is inserted between the heat exchangers 32 and 42 from below, the both convex portions 103 and 103 have downward corners (for example, fins 321 and 42). The stopper functions to position the relative position between the heat exchanger partition member 10 and both the heat exchangers 32 and 42. Has come to fulfill.

  The exhaust cylinder partitioning member 11 is made of a heat-resistant thin plate material, extends downward from the inner and lower surfaces of the collective exhaust part 83 and then hangs down, and projects to a position below the lower surface of the collective exhaust part 83 by a predetermined amount. In addition, a letter-shaped folded piece 111 is formed. In the assembly work, when the collective exhaust part 83 is covered with the heat exchanger part 82 from above, the exhaust tube partitioning member 11 is inserted into the inside from the upper surface opening of the heat exchanger partitioning member 10 to exchange heat. By contacting the inner wall surface of the vessel partition member 10, a continuous partition from the heat exchanger partition member 10 to the exhaust tube partition member 11 is realized. The horizontal width of the folded piece 111 is set so that it can be inserted into the heat exchanger partition member 10 from the upper surface opening and is slightly smaller than the inner width of the heat exchanger partition member 10 (for example, about 1 mm smaller). Yes. That is, in the assembling operation, the ease of insertion when the lower end portion of the exhaust tube partition member 11 is inserted into the inside from the upper surface opening of the heat exchanger partition member 10, and the inside of the heat exchanger partition member 10 after being inserted Both the contact reliability to the wall surface are realized by the folded piece 111.

  Next, the procedure for assembling the can body 8 will be described. First, the heat exchanger section 82 is attached to the burner section 81 from above (see FIG. 4). The flanges of the cases 811 and 821 may be attached using means such as screws. As a result, the lower end portion 101 (projection portion 102) of the heat exchanger partition member 10 is joined to the upper end of the burner partition member 9 so as to be slightly pressed with the packing 12 interposed therebetween, and the heat exchanger partition member 10 And the burner partition member 9 are reliably integrated with each other in abutment or close contact. At this time, the projection 102 of the heat exchanger partition member 10 is tightly fitted in the concave groove 121 of the packing 12, or the manufacturing dimensional error of the burner 81, the heat exchanger 82, etc. is absorbed. Thus, the heat exchanger partition member 10 and the burner partition member 9 are shut off in a surely sealed state. Then, the collective exhaust tube portion 83 is attached to the heat exchanger portion 82 from above. Similarly to the above, this attachment may be achieved by connecting the flanges of the cases 821 and 831 using means such as screws. By this attachment, the exhaust tube partition member 11 contacts the inner wall surface of the heat exchanger partition member 10, and this contact continues even if the relative position in the vertical direction changes. It will be possible to absorb it reliably and maintain the blocking state. In this embodiment as well, in assembly work, the manufacturing dimensions are such that the lower end of the heat exchanger partition member 10 is joined to the press side with the packing 12 interposed between the upper end of the burner partition member 9. Setting (difference setting) is performed, and the step error due to the dimension setting is absorbed by the packing 12.

  As described above, even if an assembly dimension error occurs due to a manufacturing dimension error of each member, the dimension error is absorbed and the burner partition member 9 and the heat exchanger partition member 10 are brought into contact with each other with certainty. Can be maintained. Without compromising the ease of assembling work, the inside of the can 8 is completely separated from the components 31 and 32 for the first water channel and the combustion chamber 33 from the components 41 and 42 and the combustion chamber 43 for the second water channel. As a result, the gaps between the burner partitioning member 9 and the heat exchanger partitioning member 10 can be reliably prevented and maintained in close contact with each other. Thereby, combustion gas and combustion exhaust gas from the first burner 31 leak to the second water channel side, or conversely, combustion gas and combustion exhaust gas from the second burner 41 leak to the first water channel side. Thus, it is possible to reliably avoid the occurrence of inconvenience due to the leak.

<Other embodiments>
The present invention is not limited to the first or second embodiment described above, but includes other various embodiments. That is, in the second embodiment, the protrusion 102 is formed on the heat exchanger partition member 10 side, and the packing 12 is disposed so that the groove 121 opens upward, so that the protrusion 102 is placed in the groove 121. However, the present invention is not limited to this, and it may be turned upside down. For example, as shown in FIG. 7, the heat exchanger partition member 10 is formed such that a protrusion 93 is projected upward at the upper end 91 of the burner partition member 9 a and the packing 12 is opened downward with the groove 121. It is also possible to fix the protrusion 93 to the lower end of the groove by bonding or the like so that the protrusion 93 fits upward into the concave groove 121 during assembly. Even in this case, the guide portions 92 and 92 fulfill the function of suppressing the occurrence of the sag of the packing 12 with the packing 12 fitted between them.

2,8 can body 31 first burner 32 first heat exchanger 41 second burner 42 second heat exchanger 5, 9, 9a burner partition member 6, 10, 10a heat exchanger partition member 7 dimension absorption pair 12 packing ( Elastic material, dimension absorber)
31 1st burner 32 1st heat exchanger 41 2nd burner 42 2nd heat exchanger 92 Guide part 93,102 Projection part
121 groove

Claims (5)

A first burner and a second burner are arranged side by side in the lower part of a single can body, the first heat exchanger is located above the first burner, and the second heat exchanger is located above the second burner. The first heat exchanger is heat exchange heated by the combustion heat of the first burner, and the second heat exchanger is heat exchange heated by the combustion heat of the second burner. In a heat source machine comprising a burner partition member that partitions between the two burners and a heat exchanger partition member that partitions between the first heat exchanger and the second heat exchanger,
It is interposed between the upper and lower ends of the burner partition member and the lower end portion of the heat exchanger partition member, and is sandwiched between the burner partition member and the heat exchanger partition member so that the vertical pressing force is reduced. Including a dimension absorber that receives elastic deformation, elastic-plastic deformation, or plastic deformation,
By joining the lower end portion of the heat exchanger partition member to the upper end portion of the burner partition member via a dimension absorber, the relative spacing in the vertical direction between the burner partition member side and the heat exchanger partition member side is increased. It is assembled to absorb the deviation,
A heat source machine characterized by that. The heat source machine according to claim 1,
The dimension absorber is made of an elastic material, a heat source machine The heat source machine according to claim 1 or 2,
A heat source machine in which a guide portion is formed on one of the upper end portion of the burner partition member and the lower end portion of the heat exchanger partition member so as to protrude in the vertical direction from both horizontal positions of the dimension absorber. The heat source machine according to claim 1 or 2,
A heat source machine, wherein a protrusion projecting in the vertical direction toward the dimension absorber is formed on one of the upper end portion of the burner partition member and the lower end portion of the heat exchanger partition member. The heat source machine according to claim 4,
A heat source machine, wherein the dimension absorber is provided with a concave groove that opens in a surface opposite to the protrusion.

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