JP5369967B2 - Heat source machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat source machine capable of minimizing an increase of exhaust resistance and suppressing the imbalance of exhaust resistance at first and second water channel sides even if an installation position of a secondary heat exchanger is deflected to one side in the horizontal direction in a one-can two-water channel type heat source machine. <P>SOLUTION: A burner 31, a primary heat exchanger 32, a collective exhaust section 34 and a communication hole 33 for the first water channel, and a burner 41, a primary heat exchanger 42, a collective exhaust section 44 and a communication hole 43 for the second water channel are partitioned by a partitioning member 5, and the secondary heat exchangers 35, 45 are partitioned by a partitioning wall 232. A secondary heat exchange section 23 incorporating the secondary heat exchangers 35, 45 is deflected by S1 to one side in the horizontal direction, and a part of the collective exhaust sections 34, 44 of the partitioning member 5 is formed as an inclined partitioning section 52 inclined by an amount corresponding to the deflection. The other side of a collective exhaust pipe 22a has an inclined wall 222a. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention recovers latent heat from a burner for a first water channel (for example, a hot water supply circuit), a primary heat exchanger heat-exchanged by the burner, and combustion exhaust gas from the primary heat exchanger in a single can. A secondary heat exchanger, a collective exhaust for collecting combustion exhaust gas from the primary heat exchanger and guiding it to the secondary heat exchanger, and a second water channel (for example, a bath reheating circuit or a hot water heating circuit) Burner, a primary heat exchanger that is heat-exchanged by the burner, a secondary heat exchanger that recovers latent heat from the combustion exhaust gas from the primary heat exchanger, and a combustion exhaust gas from the primary heat exchanger The present invention relates to a one-can multi-channel heat source apparatus in which a plurality of water-channel components including a collective exhaust section for guiding to a secondary heat exchanger are partitioned from each other. In particular, the present invention relates to an assembly layout of the primary heat exchanger, the collective exhaust pipe, and the secondary heat exchanger.

  Conventionally, as this type of heat source machine, a primary heat exchanger for a first water channel, a collective exhaust pipe and a secondary heat exchanger, a primary heat exchanger for a second water channel, a collective exhaust in a single can. A partition plate is disposed between the cylinder and the secondary heat exchanger, and the partition plate separates the flow path portion of the combustion exhaust gas for the first water channel and the flow channel portion of the combustion exhaust gas for the second water channel from each other. What was made into is known (for example, refer patent document 1).

JP 2008-25959A

  By the way, when a plurality of combinations of constituent elements such as a primary heat exchanger for sensible heat recovery, a collective exhaust part, and a secondary heat exchanger for latent heat recovery are provided in a single can body, A structure that matches the vertical direction is adopted. That is, as illustrated in FIG. 5, the primary heat exchanger 32 heated by the first burner 31, the collective exhaust part 34 that collects the combustion exhaust gas that has passed through the primary heat exchanger 32, and introduces the flue gas to the communication hole 33 are introduced. The combination of the first water channel component, the secondary heat exchanger 35 that recovers latent heat from the combustion exhaust gas, the primary heat exchanger 42 heated by the second burner 41, and the combustion exhaust gas that has passed through the primary heat exchanger 42 A combination of components for the second water channel, that is, a collective exhaust part 44 that collects the gas and leads to the communication hole 43 and a secondary heat exchanger 45 that recovers latent heat from the introduced combustion exhaust gas. Are arranged so that the ratio between the components arranged on the left and right sides (approximately 6: 4 in the illustrated example) is the same in the vertical direction, and the components for each waterway are aligned in the vertical direction. Like stacked It has been to the structure. That is, if the ratio of the primary heat exchanger 32 for the first water channel and the primary heat exchanger 42 for the second water channel is 6: 4, the collective exhaust 34 for the first water channel and the second Similarly, the ratio with the collective exhaust 44 for the water channel and the ratio between the secondary heat exchanger 35 for the first water channel and the secondary heat exchanger 45 for the second water channel are also 6: 4. Therefore, the partition member 500 that divides both is also installed in a configuration extending vertically in a straight line.

  In such a structure, when the combustion air is supplied to the first and second burners 31 and 41 by the single blower fan 24, the first and second water channel sides are used. The exhaust resistance balance is originally obtained from the communication holes 33 and 43 through which the flue gas is introduced from the collective exhaust parts 34 and 44 to the secondary heat exchangers 35 and 45 and the latent heat recovered from the secondary heat exchangers 35 and 45. It is determined by the ratio of each opening to the exhaust port 233 for releasing the combustion exhaust gas to the outside.

  However, although the sensible heat recovery in the primary heat exchangers 32 and 42 is set to the ratio of 6: 4 on the first water channel side and the second water channel side as described above, the main point of the latent heat recovery is, for example, the first Change the ratio between the components in the vertical direction, for example, to set the ratio of the secondary heat exchanger between the first water channel side and the second water channel side to 8: 2 for this purpose. Due to the design of the layout in the case where there is a demand or the secondary heat exchanger is to be shifted to one side in the horizontal direction to secure the space for various parts (for example, expansion tank T and accessories) in the housing H The change request may occur, and if it is simply changed, inconvenience occurs particularly in terms of exhaust resistance.

  That is, the exhaust resistance may increase on the first water channel side or the second water channel side, and the exhaust resistance balance may be lost on the first water channel side and the second water channel side. . When such an increase in exhaust resistance or a breakdown in the exhaust resistance balance occurs, an increase in the amount of air supplied by the blower fan 24 is caused, or noise is generated as the number of fan rotations increases.

  This invention is made | formed in view of such a situation, The place made into the objective is in the 1 can multi-channel water source type heat source machine with which the component for several water channels was provided side by side in the single can body. In particular, even if a layout in which the position of the secondary heat exchanger is shifted to one side in the horizontal direction is adopted, or in order to satisfy the change request for the ratio between components in the vertical direction, Even if a layout that changes the size of the side is adopted, an increase in the exhaust resistance can be suppressed to a minimum, and at the same time, the balance of the exhaust resistance between the first water channel side and the second water channel side is lost. It is in providing the heat source machine which can be suppressed.

  In order to achieve the above object, in the present invention, a combination of a primary heat exchanger for sensible heat recovery, a collective exhaust part, and a secondary heat exchanger for latent heat recovery is provided for a plurality of water channels in a single can. The combustion exhaust gas that has passed through the primary heat exchanger is separated by the collective exhaust part by separating the combination of the primary heat exchanger, the collective exhaust part, and the secondary heat exchanger for each water channel with a partition member. The following specific matters shall be provided for the latent heat recovery type heat source machine in which the flue gas flow path that is supplied to the secondary heat exchanger through the communication hole after being assembled is divided for each water channel. It was. In other words, the secondary heat exchanger is offset from one side in the horizontal direction with respect to the lower primary heat exchanger, and the partition member is located downstream of the primary heat exchanger and upstream of the communication hole. It is assumed that there is an inclined partition portion that is inclined obliquely upward toward the side where the offset is arranged in the region (claim 1).

  In the case of the present invention, the inclined partition portion sandwiches the inclined partition portion so that the flow passage cross section of the exhaust flow passage from the downstream side of the primary heat exchanger on the other side in the horizontal direction to the communication hole, that is, the flow passage cross section of the collective exhaust portion. Further, it is possible to enlarge compared to the case where the inclined partition portion is not formed. As a result, the exhaust resistance in the collective exhaust portion can be reduced by the enlarged amount. For this reason, when it becomes necessary to reduce the exhaust resistance on the downstream side of one water channel side more than that on the upstream side due to some necessity for heat recovery, by forming the inclined partition portion as described above, The exhaust resistance can be reduced. Even if the secondary heat exchanger is offset on one side in the horizontal direction, the exhaust resistance does not increase, so that the space available for the other side in the horizontal direction of the secondary heat exchanger by the offset arrangement. Therefore, for example, an expansion tank or auxiliary equipment can be adopted in this space, and the degree of freedom in layout design can be improved.

  According to the inclined partition portion of the present invention, the ratio of the cross-sectional area of the upstream flue gas flow path to the downstream flue gas flow path of the primary heat exchanger can be changed (claim 2). As described above, the cross section of the exhaust channel on the other side in the horizontal direction is enlarged, while the cross section of the exhaust channel on the one side in the horizontal direction is reduced. Therefore, it is possible to change the exhaust resistance on the one side and the other side in the horizontal direction across the inclined partition so that the exhaust resistance can be reduced or increased. Depending on the situation, the change can be adjusted.

  Also, among the primary heat exchangers for a plurality of water channels, the cross-sectional area of the flow path of the combustion exhaust gas on the downstream side of the primary heat exchanger for the water channel having the lower thermal efficiency is set to the combustion on the upstream side of the primary heat exchanger. The cross-sectional area of the exhaust gas flow passage can be enlarged (claim 3). As described above, it becomes possible to enlarge the downstream side of the upstream side of the primary heat exchanger with respect to the cross-sectional area of the combustion exhaust gas on the other side in the horizontal direction across the inclined partition, and the secondary heat exchanger is offset. Even so, an increase in exhaust resistance can be reliably suppressed. In addition, the side with low thermal efficiency has a smaller volume reduction rate of the combustion exhaust gas than the high side, so it tends to cause a collapse of the exhaust resistance balance, but this can be prevented by arranging the secondary heat exchanger in an offset arrangement. Is possible.

  The partition member provided with the above-described inclined partition part can be fixed to a member that configures the collective exhaust part (Claim 4). By doing in this way, the collective exhaust part on the downstream side of the primary heat exchanger is surely partitioned, and the operation of the present invention can be reliably obtained.

  Further, the combustion air can be supplied to all the burners of the plurality of water channels in the single can by a single blower fan. In this case, the present invention is particularly useful. That is, when supplying combustion air to all the burners for a plurality of water channels by a single blower fan, the entire air supply operation is performed on the basis of the side with the increased exhaust resistance, and noise is generated. Therefore, it is possible to avoid such inconvenience. In addition, since the combustion air is supplied to all the burners for a plurality of water channels by a single blower fan, compared to the case where a blower fan is installed for each burner for a plurality of water channels. The number of parts can be reduced and the heat source machine can be reduced in weight.

  As described above, according to the heat source apparatus of any one of claims 1 to 5, the exhaust flow path from the downstream side of the primary heat exchanger on the other side in the horizontal direction to the communication hole with the inclined partition portion interposed therebetween. The cross section of the flow path, that is, the cross section of the flow path of the collective exhaust portion can be enlarged as compared with the case where the inclined partition portion is not formed, and thereby the exhaust resistance in the collective exhaust portion can be reduced. For this reason, when it is necessary to reduce the exhaust resistance on the downstream side of one water channel side more than that on the upstream side due to some necessity in heat recovery, the formation of the inclined partition portion as described above, Reduction of exhaust resistance can be realized. On the other hand, even if the secondary heat exchanger is offset on one side in the horizontal direction, the exhaust resistance does not increase, so the space formed at the other side in the horizontal direction of the secondary heat exchanger by the offset arrangement For example, it is possible to adopt an expansion tank or auxiliary equipment by utilizing the above, and the degree of freedom in layout design can be improved.

  In particular, according to the second aspect of the present invention, the inclined partition portion can change the cross-sectional area ratio of the upstream side flue gas passage to the downstream side flue gas passage of the primary heat exchanger. It can be changed and adjusted according to the above requirements and the heat recovery requirements.

  According to claim 3, the cross-sectional area of the flow path of the combustion exhaust gas on the downstream side of the primary heat exchanger for the water channel having a low thermal efficiency among the plurality of water channels is defined as the combustion on the upstream side of the primary heat exchanger. By enlarging the cross-sectional area of the exhaust gas flow path, an increase in exhaust resistance can be reliably suppressed even if the secondary heat exchanger is offset. In addition, the side with low thermal efficiency has a smaller volume reduction rate of the combustion exhaust gas than the high side, so it tends to cause a collapse of the exhaust resistance balance, but this can be prevented by arranging the secondary heat exchanger in an offset arrangement. Will be able to.

  According to the fourth aspect of the present invention, the collective exhaust part on the downstream side of the primary heat exchanger can be reliably partitioned, and the above-described effects of the present invention can be reliably obtained.

  Further, according to claim 5, by applying the present invention to a single blower fan that supplies combustion air to all the burners for a plurality of water passages in the single can, exhaust resistance As a result, the entire air supply operation is performed on the basis of the increased side, so that it is possible to avoid the occurrence of inconvenience such as noise generation. In addition, since the combustion air is supplied to all the burners for a plurality of water channels by a single blower fan, compared to the case where a blower fan is installed for each burner for a plurality of water channels. Thus, the number of parts can be reduced and the heat source machine can be reduced in weight.

It is explanatory drawing which showed typically 1st Embodiment of this invention in the cross-sectional state. It is a figure corresponding to FIG. 1 which shows 2nd Embodiment. It is a figure corresponding to FIG. 1 which shows 3rd Embodiment. It is a figure corresponding to Drawing 1 showing a 4th embodiment. FIG. 2 is a view corresponding to FIG. 1 of a heat source machine exemplified for explaining the problem of the present invention.

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

<First Embodiment>
FIG. 1 shows a can body 2a of a heat source machine according to a first embodiment of the present invention. This heat source machine is for various components 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 a heating circuit for hot water circulation) with respect to a single can body 2a. Both of these components are built-in. The components for the first water channel include the first burner 31, the first primary heat exchanger 32 that is heat-exchanged and heated by the combustion of the first burner 31, and the combustion exhaust gas that has passed through the primary heat exchanger 32. And a first secondary heat exchanger 35 for recovering latent heat from the combustion exhaust gas introduced through the first communication hole 33. In addition, as the components for the second water channel, the second burner 41, the second primary heat exchanger 42 that is heat exchange-heated by the combustion of the second burner 41, and after passing through the primary heat exchanger 42 A second collective exhaust part 44 that collects combustion exhaust gas and guides it to the second communication hole 43, and a second secondary heat exchanger 45 that recovers latent heat from the combustion exhaust gas introduced through the second communication hole 43 are provided. . That is, the can body 2a is configured in a single can / two water channel type.

  The can body 2a is assembled by assembling the can body portion 21, the collective exhaust cylinder portion 22a, and the secondary heat exchange portion 23 in this order. The can body portion 21 has a blower fan 24 attached to a lower position or the like, a first burner 31 on one side in the horizontal direction (right side in the figure), a second burner 41 in the horizontal direction, etc. The first primary heat exchanger 32 is installed on one side in the horizontal direction, and the second primary heat exchanger 42 is installed on the other side in the horizontal direction. It is a thing. And between both the 1st burner 31 and the 2nd burner 41, and between both of the 1st primary heat exchanger 32 and the 2nd primary heat exchanger 42, the hanging partition part of below-mentioned partition member 5 51 are separated from each other and partitioned. Each primary heat exchanger 32, 42 is configured by, for example, a fin and tube type.

  The collective exhaust cylinder portion 22 a includes a case 221 whose lower surface is opened so as to cover the upper surface opening of the can body portion 21, and the interior of the case 221 is separated from the first collective exhaust portion 34 on one side in the horizontal direction by the partition member 5. The second exhaust unit 44 on the other side in the horizontal direction is partitioned and partitioned. A first communication port 33 is formed at one horizontal position (for example, the back position) on the upper surface of the case 221, and a second communication port 43 is formed at the other horizontal position (the back position).

  The secondary heat exchanging portion 23 is partitioned by the first and second communication holes 33 and 43 at the bottom rear position of the case 231, and the inside is partitioned into two by a partition wall 232. The first secondary heat exchanger 35 is built in the second, and the second secondary heat exchanger 45 is built in the other. The combustion exhaust gas after the latent heat recovery by the secondary heat exchangers 35 and 45 is discharged from the exhaust port 233 to the outside. The exhaust port 233 is opened on either the upper surface side of the case 231 or the front surface side of the case 231 as illustrated. Each of the secondary heat exchangers 35 and 45 is constituted by, for example, a multi-tube type in which spiral water pipes are concentrically arranged in a multiple manner.

  The first and second burners 31 and 41 are combusted by the air supplied from the single blower fan 24, and the combustion gas is heat-exchanged and heated while passing through the primary heat exchangers 32 and 42. The flue gas after passing through the heat exchangers 32 and 42 is collected in the collective exhaust parts 34 and 44 and led to the communication holes 33 and 43, and the flue gas led into the secondary heat exchange part 23 is the secondary heat. After the latent heat is recovered by the exchangers 35 and 45, the heat is discharged to the outside from the exhaust port 233. Until the release of the combustion exhaust gas described above, the air supply pressure of the single blower fan 24 is used as a source, and the primary heat exchangers 32 and 42, the collective exhaust parts 34 and 44, the communication holes 33 and 43, and the secondary heat exchanger. 35 and 45 and the exhaust port 233 cause exhaust resistance. For this reason, the blower fan 24 is controlled to operate so that a predetermined amount of air can be supplied against the exhaust resistance.

  In addition to the above basic configuration, in the present embodiment, the arrangement position of the secondary heat exchanging portion 23 is offset with respect to the can body portion 21 so as to be shifted to one side in the horizontal direction (right side in FIG. 1). Yes. And the collective exhaust cylinder part 22a and the partition member 5 which connect the secondary heat exchange part 23 and the can part 21 of this offset arrangement | positioning are each inclined, and the flow-path cross section of combustion exhaust gas changes smoothly. ing.

  That is, as the partition member 5, the part partitioning the first and second burners 31, 41 and the first and second primary heat exchangers 32, 42 from each other is a hanging part 51 extending in the vertical direction. The part of the exhaust part 22a that divides the first collective exhaust part 34 and the second collective exhaust part 44 hangs down toward the first water channel that is the offset movement side (right side in FIG. 1) by an amount corresponding to the offset amount S1. An inclined partition portion 52 extending obliquely upward from the upper end of the partition portion 51 to the inner upper surface of the case 221 is used. By forming the inclined partition portion 52, the flow passage cross section of the exhaust flow passage (flow passage cross section of the second collective exhaust portion 44) from the second primary heat exchanger 42 to the second communication hole 43 in particular is changed into the inclined partition portion. The size can be enlarged as compared with the case where 52 is not formed. Thus, the exhaust resistance in the second collective exhaust part 44 can be reduced by the enlarged amount. For this reason, when it becomes necessary to reduce the exhaust resistance on the downstream side of one water channel than that on the upstream side due to some necessity for heat recovery, the formation of the inclined partition portion 52 as described above is necessary. The exhaust resistance can be reduced. For example, the flow path cross-sectional area of the flow path on the downstream side of the primary heat exchanger 42 (the flow path of the second collective exhaust section 44) on the second water channel side, which is the low thermal efficiency side, is connected to the primary heat exchanger 42. It becomes possible to make it larger than the flow path. As a result, the exhaust resistance on the downstream side of the primary heat exchanger 42 can be reduced on the second water channel side, which is the low thermal efficiency side.

  On the other hand, the flow passage cross section of the exhaust flow passage from the first primary heat exchanger 32 to the first communication hole 33 (the flow passage cross section of the first collective exhaust portion 34) is reduced by the formation of the inclined partition portion 52 described above. Therefore, the assembly position of the collective exhaust portion 22a with respect to the can body portion 21 is shifted to the offset movement side by an offset amount S2 (S2 is substantially equivalent to S1) corresponding to the offset amount S1. Thereby, the flow path cross section of the 1st collection exhaust part 34 can be expanded to what is originally needed. Furthermore, the wall portion of the case 221 that divides the second collective exhaust portion 44 on the side opposite to the inclined portion 52 is an inclined wall 222a that is inclined to the same side as the inclined partition portion 52. A smooth flow of the combustion exhaust gas at the portion 44 is intended. Thereby, in the case where the inclined wall 222a is not formed, occurrence of a situation in which the exhaust resistance increases due to the generation of turbulent flow at the corner is avoided.

  In the case of the above embodiment, even if the secondary heat exchange part 23 is offset from the can body part 21 in the horizontal direction, the flow of the combustion exhaust gas from the can body part 21 side to the secondary heat exchange part 23 It is possible to secure the necessary flow path cross section in both the first and second collective exhaust parts 34 and 44 and to ensure a smooth flow of the combustion exhaust gas without narrowing the cross section of the road. become able to. For this reason, the exhaust resistance is not increased, and the exhaust resistance balance between the first water channel side and the second water channel side is not disturbed. Therefore, the overall air supply amount of the blower fan 24 is increased. (Increase in fan speed) is not caused. Since the above-described offset arrangement is possible without causing such inconvenience, for example, an expansion tank T and auxiliary equipment are arranged in the space K formed on the other side in the horizontal direction by the offset arrangement on the one side in the horizontal direction. It becomes possible to adopt such a method, and the degree of freedom in designing the layout in the housing H can be improved.

Second Embodiment
FIG. 2 shows a can body 2b of a heat source machine according to the second embodiment of the present invention. The can 2b of the second embodiment is different from the first embodiment only in that it includes a collective exhaust part 22b having a configuration different from that of the first embodiment, and is otherwise the same as the first embodiment. For this reason, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and redundant description is omitted.

  The collective exhaust part 22b of the present embodiment is provided with a standing wall 222b that rises directly in the vertical direction from the same position as the body wall 212 of the case 211 of the can body part 21 instead of the inclined wall 222a of the first embodiment. .

  In the case of this second embodiment, although the guarantee of the smooth flow of the combustion exhaust gas by the formation of the inclined wall 222a of the first embodiment is somewhat disturbed, other operational effects can be obtained as in the first embodiment. . That is, by forming the inclined partition portion 52, as in the first embodiment, the cross section of the exhaust passage from the second primary heat exchanger 42 to the second communication hole 43 (the flow of the second collective exhaust portion 44). The road cross section) can be enlarged as compared with the case where the inclined partition portion 52 is not formed. Thus, the exhaust resistance in the second collective exhaust part 44 can be reduced by the enlarged amount. For this reason, when it becomes necessary to reduce the exhaust resistance on the downstream side of one water channel than that on the upstream side due to some necessity for heat recovery, the formation of the inclined partition portion 52 as described above is necessary. Reduction of the exhaust resistance can be realized. For example, the flow path cross-sectional area of the flow path on the downstream side of the primary heat exchanger 42 (the flow path of the second collective exhaust section 44) on the second water channel side, which is the low thermal efficiency side, is connected to the primary heat exchanger 42. It becomes possible to make it larger than the flow path. As a result, the exhaust resistance on the downstream side of the primary heat exchanger 42 can be reduced on the second water channel side, which is the low thermal efficiency side.

  Further, the flow passage cross section of the exhaust flow passage from the first primary heat exchanger 32 to the first communication hole 33 (the flow passage cross section of the first collective exhaust portion 34) is also a can body portion as in the first embodiment. The assembly position of the collective exhaust part 22b with respect to 21 can be shifted to the offset movement side of the secondary heat exchange part 23, and the flow path cross section of the first collective exhaust part 34 can be expanded to what is originally required.

<Third Embodiment>
FIG. 3 shows a can body 2c of a heat source machine according to a third embodiment of the present invention. The can 2c of the third embodiment is different from the first embodiment only in that it includes a collective exhaust part 22c having a configuration different from that of the first embodiment, and is otherwise the same as the first embodiment. For this reason, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and redundant description is omitted.

  The collective exhaust part 22c of this embodiment has substantially the same configuration as the case 201 of the original collective exhaust part 200 (see FIG. 5), and has the same amount of offset movement as the secondary heat exchange part 23. The amount of movement is offset on one side in the horizontal direction.

  In the case of the third embodiment, by forming the inclined partition portion 52 in the partition member 5, the exhaust flow path from the second primary heat exchanger 42 to the second communication hole 43 is formed as in the first embodiment. The cross section of the flow path (the cross section of the flow path of the second collective exhaust portion 44) can be made larger than when the inclined partition portion 52 is not formed. Thereby, an increase in exhaust resistance in the second collective exhaust part 44 can be suppressed. Further, the flow passage cross section of the exhaust flow passage from the first primary heat exchanger 32 to the first communication hole 33 (the flow passage cross section of the first collective exhaust portion 34) is also a can body portion as in the first embodiment. The assembly position of the collective exhaust part 22b with respect to 21 can be shifted to the offset movement side of the secondary heat exchange part 23, and the flow path cross section of the first collective exhaust part 34 can be expanded to what is originally required. Furthermore, in the case of this embodiment, the space K formed by the offset movement becomes larger than that of the other embodiments, and other various parts in the housing H (see FIG. 1), such as the expansion tank T and auxiliary machinery, are provided. The arrangement space for arrangement can be further expanded.

<Fourth embodiment>
FIG. 4 shows a can body 2d of a heat source machine according to the fourth embodiment of the present invention. In the can body 2d of the fourth embodiment, the partition member 5 includes the inclined partition portion 52, and the ratio between the secondary heat exchangers 35d and 45d in the secondary heat exchange portion 23d is the primary heat exchanger 32. , 42 is different from the can 2 shown in FIG. 5 in that the ratio between the components related to heat recovery is changed in the vertical direction. In the present embodiment, an example in which the size of the secondary heat exchanger 45d is increased in order to further increase the latent heat recovery in the second secondary heat exchanger 45d is illustrated.

  More specifically, the ratio between the first and second primary heat exchangers 32 and 42 is 60:40, while the ratio between the first and second secondary heat exchangers 35d and 45d is changed. The example changed to 45:55 is illustrated. In each of the first to third embodiments, the ratio of the secondary heat exchangers 35 and 45 in the secondary heat exchanging unit 23 is the same as that of the primary heat exchangers 32 and 42, and between the components in the vertical direction. Although there is no change in the ratio itself, the secondary heat exchanger 23 that has been offset-moved to one side in the horizontal direction with respect to the can body 21 has been shown as having the "secondary heat exchanger disposed in an offset arrangement". However, in this embodiment, the primary heat exchanger is changed by changing the ratio of the first and second secondary heat exchangers 35d and 45d to a ratio different from that of the primary heat exchangers 32 and 42. The example of what made the "secondary heat exchanger an offset arrangement | positioning" is shown with respect to this side. Also in the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and redundant description is omitted.

  That is, the partition position by the partition wall 232 is moved to the one side in the horizontal direction by the offset movement amount S1 in the secondary heat exchange part 23d, and the first second housed on the one side in the horizontal direction partitioned by the partition wall 232 is stored. The size of the secondary heat exchanger 35d is made smaller than that of the secondary heat exchanger 35 in FIG. 5, and the size of the second secondary heat exchanger 45d accommodated on the other side in the horizontal direction is changed to the secondary heat exchanger in FIG. It is larger than 45. Accordingly, the opening size of the second communication hole 43d is changed to a larger one.

  In the case of the present embodiment, due to the presence of the inclined partition portion 52 of the partition member 5, the cross section of the exhaust flow path from the second primary heat exchanger 42 to the second communication hole 43d (as in the first embodiment) ( The flow passage cross section of the second collective exhaust part 44) can be enlarged as compared with the case where the inclined partition part 52 is not formed. In addition to this, since the opening size of the second communication hole 43d is further enlarged, along with the enlargement of the flow passage cross section of the second collective exhaust part 44 and the enlargement of the second communication hole 43d, The exhaust resistance and the exhaust resistance toward the second secondary heat exchanger 45d through the second communication hole 43d can be reduced. For this reason, due to the need for heat recovery, in particular, there is a request to change the size of the secondary heat exchanger on the one water channel side (second secondary heat exchanger 45d in the present embodiment), that is, in the vertical direction. When a change request is made for the ratio between the components, and it is necessary to reduce the exhaust resistance downstream of the primary heat exchanger 42 with respect to the secondary heat exchanger 45d to be changed from that on the upstream side. In this case, the exhaust resistance can be reduced by forming the inclined partition portion 52 as described above and changing the opening size of the communication hole 43d.

  Further, with respect to the exhaust resistance from the first collective exhaust part 34 toward the first secondary heat exchanger 35d whose size has been changed to be smaller, the corner angle in the first collective exhaust part 34 is also set by the inclined partition part 52. Since the occurrence of turbulent flow or the like in the section is suppressed, a smoother flow of the combustion exhaust gas can be ensured, and the exhaust resistance downstream of the primary heat exchanger 42 can be reduced.

<Other embodiments>
The present invention is not limited to the first to fourth embodiments, but includes other various embodiments. That is, in each of the first to fourth embodiments, the example in which the partition member 5 is configured by a single member fixed to the collective exhaust tube portions 22a to 22d has been described. Of course, as long as it includes the inclined partition portion 52 in 22d, it may be constituted by a partition member separate from the partition members that partition the primary heat exchangers 32 and 42 and the burners 31 and 41.

2a to 2d can body 5 partitioning members 22a to 22d collective exhaust tube portion (members defining the collective exhaust portion)
24 Blow fan 31 1st burner 32 1st primary heat exchanger 33, 33d 1st communicating hole 34 1st collective exhaust parts 35, 35d 1st secondary heat exchanger 41 2nd burner 42 2nd primary heat exchange 43, 43d Second communication hole 44 Second collective exhaust 45, 45d Second secondary heat exchanger 52 Inclined partition 222a Inclined wall

Claims (5)

In a single can, a combination of a primary heat exchanger for sensible heat recovery, a collective exhaust part and a secondary heat exchanger for latent heat recovery is provided for a plurality of water channels, and the primary heat for each water channel is provided. The combination of the exchanger, the collective exhaust section, and the secondary heat exchanger is partitioned from each other by a partition member, so that the combustion exhaust gas that has passed through the primary heat exchanger is collected by the collective exhaust section and then the secondary heat exchange through the communication hole. A latent heat recovery type heat source machine in which the flow path of the combustion exhaust gas supplied to the vessel is divided for each water channel,
The secondary heat exchanger is disposed offset on one side in the horizontal direction with respect to the lower primary heat exchanger,
The partition member includes an inclined partition portion that is inclined obliquely upward toward the offset side in a region downstream of the primary heat exchanger and upstream of the communication hole. Heat source machine. The heat source machine according to claim 1,
The heat source machine, wherein the cross-sectional area ratio of the upstream side flue gas passage to the downstream side flue gas passage of the primary heat exchanger is changed by the inclined partition. The heat source machine according to claim 2,
Among the primary heat exchangers for a plurality of water channels, the cross-sectional area of the flue gas flow path on the downstream side of the primary heat exchanger for the low heat efficiency water channel is the A heat source machine that is larger than the cross-sectional area of the flow path. It is a heat source machine in any one of Claims 1-3,
A heat source machine, wherein a partition member provided with the inclined partition portion is fixed to a member that configures the collective exhaust portion. It is a heat source machine in any one of Claims 1-4,
A heat source machine configured to supply combustion air to all the burners of a plurality of water channels in the single can body by a single blower fan.

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