JP6318545B2 - Heat source machine - Google Patents

Description

  The present invention relates to a heat source machine, and more particularly to a heat source machine capable of recovering the latent heat of combustion gas.

  As an example of a heat source device, in order to improve thermal efficiency, a heat exchanger that has a heat exchanger that recovers sensible heat and latent heat of combustion exhaust gas (latent heat held by water vapor in the combustion exhaust gas) has been put into practical use. . When this heat exchanger capable of recovering latent heat is used, the water vapor in the combustion exhaust gas is condensed and condensed due to the removal of latent heat, so a large amount of drain (condensation water) is generated in the heat exchanger. Since the combustion exhaust gas contains nitrogen oxides, etc., it dissolves in the drain and the drain becomes acidic. A neutralizing agent is used to neutralize this acidic drain. This neutralizing agent is filled in the neutralizer. A combustion apparatus provided with a neutralizer is described in, for example, Japanese Patent Application Laid-Open No. 2013-164174 (Patent Document 1).

JP 2013-164174 A

  In the above-described latent heat recovery type heat source machine, a large amount of neutralizing agent is required, and thus a large volume neutralizer is required. In the neutralizer having a large volume, the range in which the drain is stored becomes large, so that the drain is easily frozen in the neutralizer. If the drain freezes inside the neutralizer, combustion cannot be continued, so a heater for preventing the freeze of the neutralizer is required. For this reason, there exists a problem that cost becomes high.

  This invention is made | formed in view of said subject, The objective is to provide the heat source machine which can enlarge the volume of a neutralizer and can reduce cost.

  The heat source apparatus of the present invention can recover the latent heat of the combustion gas. The heat source machine includes a burner, a heat exchanger, a neutralizer, and a housing. The burner is for supplying combustion gas. The heat exchanger is for recovering the latent heat of the combustion gas supplied by the burner. The neutralizer is for neutralizing the drain generated by recovering the latent heat of the combustion gas with a heat exchanger. The housing has a front surface provided with an exhaust port for exhausting combustion gas. The burner includes a facing surface that faces the front surface of the housing. The neutralizer has a portion that is located in a region overlapping the opposing surface when viewed from the front side and extends in the left-right direction, and a vertically long portion that extends downward from the horizontal portion when viewed from the front side. Part.

  According to the heat source apparatus of the present invention, when viewed from the front side of the housing, the horizontally long portion extends in the left-right direction, and the vertically long portion extends downward from the horizontally long portion, so the volume of the neutralizer is increased. be able to. Further, since the horizontally long portion has a portion located in a region overlapping with the opposed surface of the burner, the heat of the burner is transferred to the portion, whereby the neutralizer can be heated. For this reason, it is not necessary to provide a heater for freezing the neutralizer separately. Thereby, cost can be reduced.

  The heat source device further includes a heating device that is disposed at a position away from the vertically long portion and that can heat the vertically long portion. Thereby, a vertically long part can be heated with the heating apparatus arrange | positioned in the position away from the vertically long part.

  In the above heat source machine, the lower end of the vertically long portion projects downward from the lower surface of the housing. Thereby, the volume of a vertically long part can be enlarged. Moreover, it is not necessary to connect the discharge hose to the lower end of the neutralizer. For this reason, cost can be reduced.

  The heat source device further includes a drainage member having an internal space surrounded by an inner wall. In a state where the drainage member is attached to the lower surface of the housing, the lower end of the vertically long portion is inserted into the internal space and disposed with a gap between the inner wall and the inner wall. For this reason, the neutralizer is removed from the casing by pulling out the lower end of the vertically long portion from the internal space of the drainage member. Therefore, it is easier to remove the neutralizer than when the pipe is directly connected to the lower end of the neutralizer.

  In the above heat source machine, the vertically long portion includes a first passage extending downward from the horizontally long portion and a second passage extending upward from the first passage. For this reason, a water seal structure can be formed by the first passage and the second passage. Thereby, it can suppress that combustion exhaust gas is discharged | emitted from the neutralizer outside the housing.

  The heat source device further includes a bath circuit for supplying hot water to the bathtub. The vertically long portion includes a first connection port that can be connected to the bath circuit. For this reason, the water of a bath circuit can be supplied to a neutralizer from a 1st connection port, and can be discharged | emitted from a neutralizer. Therefore, it is not necessary to separately provide a drainage device for discharging the bath circuit water. Thereby, cost can be reduced.

  The heat source device further includes a heating circuit for circulating hot water to the heater. The vertically long portion includes a second connection port that can be connected to the heating circuit. For this reason, the water of a heating circuit can be supplied to a neutralizer from a 2nd connection port, and can be discharged | emitted from a neutralizer. Therefore, it is not necessary to separately provide a drainage device for discharging water from the heating circuit. Thereby, cost can be reduced.

  The heat source device further includes a heating circuit for circulating hot water to the heater. The neutralizer has a portion disposed along a portion of the heating circuit. Thereby, the neutralizer can be heated by transferring the heat of the heating circuit.

  The heat source device further includes a bath reheating circuit for retreating the bath. The neutralizer has a portion arranged along a part of the bath reheating circuit. Thereby, the neutralizer can be heated by transferring the heat of the bath reheating circuit.

  As described above, according to the present invention, the volume of the neutralizer can be increased, and the cost can be reduced.

It is an operation principle figure showing roughly composition of a heat source machine in one embodiment of the present invention. It is a perspective view which shows roughly the external appearance of the heat-source equipment in one embodiment of this invention. It is a front view which shows roughly the internal structure of the heat-source equipment in one embodiment of this invention. It is a front view which shows roughly the structure of the neutralizer in one embodiment of this invention. It is a side view which shows roughly the structure of the neutralizer in one embodiment of this invention. It is sectional drawing which shows roughly the state by which the lower end of the vertically long part of the neutralizer was inserted in the drainage member in one embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the structure of the heat source machine of one embodiment of the present invention will be described.

  With reference to FIG. 1, the schematic structure of the heat source machine (hot-water heater) 1 of this Embodiment is demonstrated. The heat source unit 1 of the present embodiment has two independent combustion systems, specifically, a hot water supply side combustion system on the right side, a bath / heating side combustion system on the left side, and a control device that controls operations related to combustion. 2

  In the hot water supply side combustion system, a hot water supply side combustion unit 7 that burns fuel to generate combustion gas, a known blower 9 that blows combustion air to the hot water supply side combustion unit 7, and hot water or a heat medium are circulated. The hot water supply side heat exchange unit 11 heated by the combustion gas and the hot water running water system 20 are provided. Similarly, the bath / heating side combustion system includes a bath / heating side combustion unit 8 and the bath / heating side combustion unit. 8 is provided with a blower 9 for blowing air, a bath / heating-side heat exchanging unit 12, a heating running water system 21, and a reheating running water system 22. The heat source machine 1 has a drain discharge system 13 that receives drains from both the bath / heating combustion system and the hot water supply combustion system.

  Each combustion unit 7, 8 is provided with a plurality of burners 40 for burning fuel gas, and a fuel pipe 41 for connecting the fuel gas to the burner 40 is connected. The fuel pipe 41 is provided with an original gas solenoid valve (fuel valve) 42, a proportional valve (fuel valve) 43 and a solenoid valve (fuel valve) 44 that regulate the flow of fuel gas to each burner 40. ing. That is, in each of the combustion sections 7 and 8, the opening and closing of the fuel valves 42, 43 and 44 are controlled, and the fuel gas supplied through the fuel pipe 41 is burned by the burner 40 to generate combustion gas. The

  The hot water supply water system 20 is partly formed by the hot water supply side heat exchange unit 11, and the hot water supplied from the water supply source flows to the hot water supply side heat exchange unit 11, and the hot water supply side heat exchange unit 11 performs a curan or the like. And a hot water supply side bypass flow path 25 that bypasses the hot water supply side heat exchange section 11. In the hot water supply water system 20, the hot water supply side bypass flow rate adjustment valve (liquid valve) 26 that adjusts the flow rate passing through the hot water supply side bypass passage 25, or the hot water flow rate is reduced when the hot water temperature is lower than a predetermined value. A hot water flow rate adjusting valve (liquid valve) 27 and the like are provided.

  Further, the hot water supply water system 20 is provided with a bath dropping channel 28 branched from the hot water flow channel adjusting valve 27 and leading the hot water to the bath tub. The bath dropping flow path 28 is provided with a pouring electromagnetic valve (liquid valve) 30 for restricting the water flow to the bathtub, a backflow prevention mechanism 31 for preventing the backflow of the water flow from the bathtub side, and the like. .

  The hot water supply side heat exchanger 11 includes a primary heat exchanger 11a that mainly recovers sensible heat of the combustion gas, and a secondary heat exchanger 11b (heat exchanger HE) that mainly recovers latent heat of the combustion gas. It is configured.

  The heating / flowing water system (terminal circulation path) 21 is formed by the bath / heating-side heat exchange unit 12, and hot water is a high-temperature side terminal such as the bath / heating-side heat exchange unit 12 and a bathroom heater. A high-temperature terminal path that circulates between (not shown), a low-temperature terminal path that circulates between the bath / heating-side heat exchange unit 12 and a low-temperature side terminal (not shown) such as floor heating, and a high-temperature terminal path The heating side bypass flow path connecting the low temperature terminal path and the bath heating path for heating the hot water flowing through the reheating water system 22 are circulated.

  And in the heating running water system 21, the heating side pump 36 which forms the circulating flow of hot water, the expansion tank 37 which suppresses the pressure rise accompanying the expansion of the volume resulting from the temperature change of hot water, or the pressure drop accompanying shrinkage, A heating-side bypass thermal valve (liquid valve) 39 provided on the heating-side bypass flow path, a bath-side thermal valve (liquid valve) 45 that regulates water flow to the bath heating path, and a reheating water system A liquid / liquid heat exchanger 46 that performs heat exchange with the hot and cold water flowing through 22 is provided.

  The bath / heating-side heat exchange unit 12 includes a primary heat exchanger 12a that mainly collects sensible heat of the combustion gas, and a secondary heat exchanger 12b (heat exchanger HE) that mainly collects latent heat of the combustion gas. It consists of and.

  In the reheating water system 22, the liquid / liquid heat exchanger 46 forms a part thereof, and hot water in the bathtub is provided between the liquid / liquid heat exchanger 46 and a bath tub (not shown). A circulation channel 47 that circulates is provided. The reheating channel 47 is provided with a retreating side pump 48 that forms a circulating flow of hot water. Note that the above-described bath dropping channel 28 is connected to the reheating channel 47.

  The drain discharge system 13 is a flow path for draining the drain generated when recovering the latent heat of the combustion gas to the outside after neutralizing by the neutralizer 14. That is, as shown in FIG. 5, the drain discharge system 13 includes a neutralizer introduction flow path 15, a neutralizer 14, and a neutralizer 14 from the secondary heat exchangers 11 b and 12 b to the neutralizer 14. It is comprised with the external discharge flow path 16 of the downstream side.

Then, the specific structure of the heat source machine (hot-water heater) 1 of this Embodiment is demonstrated.
Referring to FIG. 2, the heat source device 1 includes a housing HP having a front surface FS, an upper surface US, a lower surface (bottom surface) LS, a side surface SS, and a rear surface (back surface) (not shown). The front surface FS is provided with an exhaust port EP for exhausting combustion gas. The heat source machine 1 has a substantially rectangular parallelepiped shape, and is formed so that the dimension in the width (left and right) direction (X direction in the figure) is smaller than the dimension in the height (up and down) direction (arrow Y direction in the figure). The size in the depth (front and rear) direction (Z direction in the figure) is smaller than the dimension in the width (left and right) direction (X direction in the figure).

  Referring to FIG. 3, the heat source device 1 is a latent heat recovery type heat source device capable of recovering the latent heat of the combustion gas. A hot water supply side heat exchange unit 11 and a bath / heating side heat exchange unit 12 are disposed above the burner 40 for supplying combustion gas. Specifically, a primary heat exchanger 11a for recovering sensible heat of the combustion gas supplied by the burner 40 and a primary heat exchanger 12a for the bath / heating-side heat exchange unit 12 are provided above the burner 40. Has been placed. Furthermore, above each primary heat exchanger 11a, 11b, a secondary heat exchanger 11b (heat exchanger HE) of the hot water supply side heat exchanger 11 for recovering the latent heat of the combustion gas supplied by the burner 40, The secondary heat exchanger 12b (heat exchanger HE) of the bath / heating-side heat exchange unit 12 is disposed.

  The burner 40 has a facing surface DP that faces the front surface FS of the housing HP. The neutralizer 14 is disposed in a substantially L shape on the front surface FS side of the housing HP from the opposing surface DP and on the lower surface (bottom surface) LS side of the burner 40. The neutralizer 14 is for neutralizing the drain generated by recovering the latent heat of the combustion gas in each of the secondary heat exchangers 11b and 12b. The neutralizer 14 is filled with a neutralizing agent, and the neutralizing agent can neutralize the drain. The neutralizer 14 is made of a material having electrical insulation. As a material for the neutralizer 14, for example, polypropylene can be used.

  The neutralizer 14 has a portion disposed so as to cover the burner 40. This portion is disposed at a position where the nozzle of the burner 40 is disposed on the lower side of the burner 40. For this reason, the neutralizer 14 is arranged avoiding the high temperature portion on the upper side of the burner 40. The part arrange | positioned so that the burner 40 of the neutralizer 14 may be covered is located between the burner 40 and the electricity supply line 50 which can supply electricity. That is, the burner 40 and the conducting wire 50 sandwich at least a part of the neutralizer 14.

  Referring to FIGS. 3 and 4, neutralizer 14 has a support portion SP (groove TP) that can support energization wire 50. The support portion SP is provided on the outer wall OP of the neutralizer 14 and is configured to be able to lock the energizing wire 50. An ignition nozzle 51 for igniting the burner 40 is connected to the facing surface DP of the burner 40. Further, a high voltage generating member 52 for applying a voltage to the ignition nozzle 51 to ignite the ignition nozzle 51 is disposed on the side surface of the burner 40. For example, an igniter can be used as the high voltage generating member 52. The energization line 50 is a high voltage cord that electrically connects the ignition nozzle 51 and the high voltage generating member 52.

  3 to 5, the neutralizer 14 has a horizontally long portion 14a and a vertically long portion 14b. When viewed from the front surface FS side of the housing HP, the horizontally long portion 14a and the vertically long portion 14b are connected so as to have a substantially L shape. When viewed from the side surface SS side of the housing HP, the horizontally long portion 14a and the vertically long portion 14b are arranged so as to be shifted in the depth (front-rear) direction. When viewed from the front surface FS of the housing HP, the horizontally long portion 14a is formed in a horizontally long shape, and the vertically long portion 14b is formed in a vertically long shape. That is, mainly referring to FIG. 3 and FIG. 5, the horizontally long portion 14 a has a portion located in a region overlapping with the opposing surface DP of the burner 40 when viewed from the front surface FS side of the housing HP, and the horizontal direction It extends to. The horizontally long portion 14 a is disposed along the facing surface DP so as to face the facing surface DP of the burner 40. Further, in the depth (front-rear) direction of the heat source device 1, the horizontally long portion 14a is disposed between the facing surface DP of the burner 40 and the front surface FS of the housing HP. Further, the vertically long portion 14b extends downward from one end side of the horizontally long portion 14a when viewed from the front surface FS side of the housing HP.

  An anti-freezing heater (heating device) HD for preventing freezing-side pump 48 from freezing is attached to the surface of reheating-side pump 48 that faces vertical portion 14b. The anti-freezing heater HD is disposed so as to overlap with the vertically long portion 14b when viewed from the front surface FS side of the housing HP, and is disposed with a gap from the vertically long portion 14b when viewed from the side surface SS side of the housing HP. ing. Further, the antifreezing heater HD is arranged so that the heat is transferred to the vertically long portion 14b through the air. That is, the antifreezing heater HD is disposed at a position away from the vertically long portion 14b, and is configured to be able to heat the vertically long portion 14b.

  Moreover, as shown by the arrow in the figure, the neutralizer 14 is configured such that drain enters from the upper end UE, and is discharged from the lower end LE through the horizontally long portion 14a and the vertically long portion 14b. The horizontally long portion 14a is configured to have a drain draft surface L1, and the vertically long portion 14b is configured to have a drain draft surface L2.

  Further, the vertically long portion 14b has a first passage H1 extending downward from the horizontally long portion 14a and a second passage H2 extending upward from the first passage H1. The first passage H1 and the second passage H2 constitute a water seal structure WS. When the combustion gas is introduced into the neutralizer by the water-sealed structure WS, the distribution path of the combustion gas in the drain discharge system 13 can be blocked by the drain introduced into the neutralizer 14. Thus, it is possible to prevent the combustion gas flowing into the drain discharge system 13 from flowing out to the outside by the water seal structure WS.

  The vertically long portion 14b has a first connection port C1 that can be connected to a bath circuit (hot-water supply water system 20) and a second connection port C2 that can be connected to a heating circuit (heating water system 21). The first and second connection ports C1 and C2 are arranged on the lower end LE side with respect to the second passage.

  Moreover, the neutralizer 14 has the part arrange | positioned along a part of heating circuit (heating running water system 21). In addition, the heating circuit should just be able to heat the neutralizer 14, may be in contact with the neutralizer 14, and may be separated. Further, the neutralizer 14 has a portion arranged along a part of a reheating circuit (recurrent running water system 22) not shown in FIG. The reheating circuit only needs to be able to heat the neutralizer 14, may be in contact with the neutralizer 14, or may be separated. Moreover, the neutralizer 14 has a recess formed obliquely in the vertically long portion 14b, and a part of the heating overflow hose constituting the heating circuit is fitted in this recess. For this reason, a heating overflow hose can be positioned, maintaining the downward slope of a heating overflow hose. Further, when the heating overflow hose has flexibility, special processing such as fixing the shape of the heating overflow hose using a mold can be eliminated.

  Further, a drainage member 60 capable of circulating drain and a drain plug 61 of the neutralizer 14 are attached in the vicinity of the lower end LE of the neutralizer 14. A controller fixing bracket 62 is attached to the center of the horizontally long portion 14a. Near the upper end UE of the neutralizer 14, neutralizer electrodes 63 and 64 for detecting the drain capacity are attached. Further, a neutralizer cap 65 and a packing 66 capable of sealing the inlet of the neutralizer are attached to the horizontally long portion 14a.

  4 and 6, the lower end LE of the vertically long portion 14b of the neutralizer 14 protrudes downward from the lower surface LS of the housing HP.

  The drainage member 60 has an internal space IS surrounded by the inner wall IW. With the drainage member 60 attached to the lower surface LS of the housing HP, the lower end LE of the vertically long portion 14b is inserted into the internal space IS. Further, in this state, the lower end LE of the vertically long portion 14b is disposed with a gap between it and the inner wall IW.

Subsequently, a basic operation of the heat source apparatus 1 of the present embodiment will be described.
The basic operation of the heat source device 1 includes a hot water supply operation, a heating operation, a bath drop-in operation, and a chasing operation, all of which are the same as known ones.

  In the hot water supply operation, if a calorie or the like is operated and there is a hot water discharge request, the hot water supply side heat exchange unit 11 is heated by the combustion gas generated in the hot water supply side combustion unit 7 and hot water at a desired temperature is discharged from the curan or the like. The Heating operation is based on the high temperature heating operation that circulates hot water in the bathroom heating of the bath (high temperature side terminal) and the temperature of the low temperature hot water (hot water that circulates in the high temperature side terminal). There is also a low-temperature heating operation that circulates low temperature). That is, in the high-temperature heating operation, the bath / heating-side heat exchange unit 12 is heated by the combustion gas generated in the bath / heating-side combustion unit 8, and high-temperature hot water is circulated to the high-temperature side terminal via the high-temperature terminal path. In the low-temperature heating operation, the bath / heating-side heat exchange unit 12 is heated by the combustion gas generated in the bath / heating-side combustion unit 8, and low-temperature hot water is circulated to the low-temperature side terminal via the low-temperature terminal path. .

  In the reheating operation, if the temperature of the hot water in the bathtub is lower than a predetermined temperature or if there is a request for reheating operation by a remote controller or the like, the hot water in the bathtub is set to the set temperature via the liquid / liquid heat exchanger 46. Heat until. More specifically, in the reheating operation of the present embodiment, the bath / heating-side heat exchange unit 12 is heated by the combustion gas generated in the bath / heating-side combustion unit 8, and the heat flows through the heating / running water system 21. Indirectly, the water is transmitted to the reheating channel 47 to heat the hot water in the bathtub. The bath drop-in operation is different only in the method of requesting hot water (request through a remote controller or the like), and an operation substantially similar to the hot water supply operation is performed, and thus description thereof is omitted.

Next, the effect of the heat source machine of this Embodiment is demonstrated.
According to the heat source device 1 of the present embodiment, when viewed from the front surface FS side of the housing HP, the horizontally long portion 14a extends in the left-right direction, and the vertically long portion 14b extends downward from the horizontally long portion 14a. The volume of the neutralizer 14 can be increased. Moreover, since the horizontal part 14a has a part located in the area | region which overlaps with the opposing surface of the burner 40, the neutralizer 14 can be heated when the heat of the burner 40 transfers to this part. For this reason, it is not necessary to provide a heater for freezing the neutralizer 14 separately. Thereby, cost can be reduced.

  The heat source device 1 of the present embodiment can heat the vertically long portion 14b by the antifreeze heater HD for preventing freezing of the reheating side pump 48 disposed at a position away from the vertically long portion 14b.

  In the heat source device 1 of the present embodiment, the lower end LE of the vertically long portion 14b protrudes downward from the lower surface LS of the housing HP. Thereby, the volume of the vertically long portion 14b can be increased. Further, it is not necessary to connect a discharge hose to the lower end of the neutralizer 14. For this reason, cost can be reduced.

  In the heat source device 1 of the present embodiment, the lower end LE of the vertically long portion 14b is inserted into the internal space IS and has a gap between the inner wall IW and the drainage member 60 attached to the lower surface LS of the housing HP. Are arranged. For this reason, when the lower end LE of the vertically long portion 14b is pulled out from the internal space IS of the drainage member 60, the neutralizer 14 is removed from the housing HP. Therefore, it is easier to remove the neutralizer 14 than when a pipe is directly connected to the lower end LE of the neutralizer 14.

  In the heat source device 1 of the present embodiment, the vertically long portion 14b includes a first passage H1 extending downward from the laterally long portion 14a and a second passage H2 extending upward from the first passage H1. For this reason, a water seal structure can be formed by the first passage H1 and the second passage H2. Thereby, it can suppress that combustion exhaust gas is discharged | emitted from the neutralizer 14 to the exterior of the housing | casing HP.

  In the heat source device 1 of the present embodiment, the vertically long portion 14b includes a first connection port C1 that can be connected to the bath circuit (hot water supply running water system 20). For this reason, the water of a bath circuit can be supplied to the neutralizer 14 from the 1st connection port C1, and can be discharged | emitted from the neutralizer 14. FIG. Therefore, it is not necessary to separately provide a drainage device for discharging the bath circuit water. Thereby, cost can be reduced.

  The heat source device 1 of the present embodiment includes a second connection port C2 that can be connected to the heating circuit (the heating running water system 21). For this reason, the water of a heating circuit can be supplied to the neutralizer 14 from the 2nd connection port C2, and can be discharged | emitted from the neutralizer 14. FIG. Therefore, it is not necessary to separately provide a drainage device for discharging water from the heating circuit. Thereby, cost can be reduced.

  In the heat source apparatus 1 of this Embodiment, the neutralizer 14 has the part arrange | positioned along a part of heating circuit (heating running water system 21). Thereby, the neutralizer 14 can be heated by transferring the heat of the heating circuit.

  The heat source apparatus 1 according to the present embodiment further includes a bath reheating circuit (refreshing running water system 22) for retreating the bath. The neutralizer has a portion arranged along a part of the bath reheating circuit. Thereby, the neutralizer can be heated by transferring the heat of the bath reheating circuit.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Heat source machine, 2 Control apparatus, 7 Hot water supply side combustion part, 8 Heating side combustion part, 9 Blower, 11 Hot water supply side heat exchange part, 11a, 12a Primary heat exchanger, 11b, 12b Secondary heat exchanger, 12 Heating side Heat exchanger, 13 Drain discharge system, 14 Neutralizer, 14a Horizontal section, 14b Vertical section, 15 Neutralizer introduction flow path, 16 External discharge flow path, 20 Hot water flow system, 21 Heating flow system, 22 System, 23 Hot water supply main flow path, 25 Hot water supply side bypass flow path, 27 Hot water flow path adjustment valve, 28 Bath drop-in flow path, 36 Heating side pump, 37 Expansion tank, 40 Burner, 41 Fuel piping, 42 Fuel valve, 46 Liquid・ Liquid heat exchanger, 47 reheating channel, 50 conducting wire, 51 ignition nozzle, 52 high voltage generating member, 60 drainage member, 61 drainage plug, 63, 64 neutralizer electrode, 65 neutralizer Cap, 66 packing, C1 first connection port, C2 second connection port, DP facing surface, EP exhaust port, FS front surface, H1 first passage, H2 second passage, HD antifreeze heater, HE heat exchange Vessel, HP housing, IS internal space, IW inner wall, L1, L2 draft surface, LE lower end, OP outer wall, SP support, SS side, TP groove, UE upper end, US upper surface, WS water seal structure.

Claims (9)

A heat source machine capable of recovering the latent heat of combustion gas,
A burner for supplying the combustion gas;
A heat exchanger for recovering the latent heat of the combustion gas supplied by the burner;
A neutralizer for neutralizing drain generated by recovering the latent heat of the combustion gas in the heat exchanger;
A housing having a front surface provided with an exhaust port for exhausting the combustion gas,
The burner includes a facing surface facing the front surface of the housing,
The neutralizer is
A horizontally long portion having a portion located in a region overlapping with the facing surface when viewed from the front side, and extending in the left-right direction;
When viewed from the front side, viewed contains an elongated portion extending downwardly from said horizontal portion,
A heat source apparatus further comprising a heating device that is disposed at a position away from the vertically long portion and that can heat the vertically long portion . A heat source machine capable of recovering the latent heat of combustion gas,
A burner for supplying the combustion gas;
A heat exchanger for recovering the latent heat of the combustion gas supplied by the burner;
A neutralizer for neutralizing drain generated by recovering the latent heat of the combustion gas in the heat exchanger;
A housing having a front surface provided with an exhaust port for exhausting the combustion gas,
The burner includes a facing surface facing the front surface of the housing,
The neutralizer is
A horizontally long portion having a portion located in a region overlapping with the facing surface when viewed from the front side, and extending in the left-right direction;
When viewed from the front side, including a vertically long portion extending downward from the horizontally long portion,
A heat source machine in which a lower end of the vertically long portion projects downward from a lower surface of the casing. A heat source machine capable of recovering the latent heat of combustion gas,
A burner for supplying the combustion gas;
A heat exchanger for recovering the latent heat of the combustion gas supplied by the burner;
A neutralizer for neutralizing drain generated by recovering the latent heat of the combustion gas in the heat exchanger;
A housing having a front surface provided with an exhaust port for exhausting the combustion gas,
The burner includes a facing surface facing the front surface of the housing,
The neutralizer is
A horizontally long portion having a portion located in a region overlapping with the facing surface when viewed from the front side, and extending in the left-right direction;
When viewed from the front side, including a vertically long portion extending downward from the horizontally long portion,
It further includes a heating device that is disposed at a position away from the vertically long portion and can heat the vertically long portion,
The lower end of the longitudinal portion is projected downward from the lower surface of the housing, the heat source machine. A drainage member having an internal space surrounded by an inner wall;
In a state in which the drainage member to the lower surface of the housing is mounted, the lower end of the longitudinal part, the are inserted into the inner space, and are arranged with a gap between the inner wall, according to claim 2 Or the heat source machine of 3 . The vertically long portion is
A first passage extending downward from the laterally long portion;
The heat source machine according to any one of claims 1 to 4, further comprising a second passage extending upward from the first passage. A bath circuit for supplying hot water to the bathtub;
The heat source device according to any one of claims 1 to 5, wherein the vertically long portion includes a first connection port connectable to the bath circuit. A heating circuit for circulating hot water in the heater;
The heat source device according to any one of claims 1 to 6, wherein the vertically long portion includes a second connection port connectable to the heating circuit. A heating circuit for circulating hot water in the heater;
The said neutralizer is a heat source machine of any one of Claims 1-6 which has the part arrange | positioned along a part of said heating circuit. It is further equipped with a bath chasing circuit for chasing the bath,
The said neutralizer is a heat source machine of any one of Claims 1-8 which has the part arrange | positioned along a part of the said bath reheating circuit.