JP2899557B2 - Heating water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating and hot water supply apparatus having a function of generating hot water for heating circulated through a panel radiator and the like and a function of generating hot water for hot water supplied to domestic water pipes and the like. It is about.

[0002]

2. Description of the Related Art FIG . 3 shows a supply / exhaust circuit in a conventional heating and hot water supply apparatus of this kind. In the figure, 11 is a hot water supply / exhaust circuit, 11a is a heat exchanger, 11b is a heat exchanger 11
The burner 11c is connected to the burner 1a.
A blower to be supplied to 1b, 11d is an air supply pipe, and 11e is an exhaust pipe. 12 is a heating side air supply / exhaust circuit, 12a is a heat exchanger, 12b is a burner connected to the heat exchanger 12a, 1
2c is a blower for supplying combustion air to the burner 12b;
2d is an air supply pipe, and 12e is an exhaust pipe.

[0003] The heat exchanger 11a, burner 11b and blower 11c on the hot water supply side, and the heat exchanger 12a and burner 1 on the heating side.
2b and the blower 12c are housed in a common housing 13 together with a fuel pump (not shown) or the like, and each air supply pipe 11
Ends d, 12d and the exhaust pipes 11e, 12e are exposed from the housing 13 to the outside.

[0004] In the above heating and hot water supply apparatus, an inlet pipe and an outlet pipe leading to a heat exchanger 11a for hot water supply are connected to a water pipe and a domestic water pipe, and an inlet pipe leading to a heat exchanger 12a for heating. And a water pipe connected to a panel radiator or the like. The water sent into the hot water supply pipe is the heat exchanger 1
1a is heated by the burner combustion heat in the course of passing through the water flow path and is sent out from the outlet pipe as hot water for hot water supply, and the water sent to the inlet pipe for heating passes through the water flow path of the heat exchanger 12a. Is heated by the burner combustion heat and is discharged from the discharge pipe as warm water for heating.

[0005]

In the above-mentioned conventional heating and hot water supply apparatus, the air supply pipe 11d and the exhaust pipe 11e on the hot water supply side and the air supply pipe 12d and the exhaust pipe 12e on the heating side are separately provided. It is necessary to perform piping work on each of the air supply pipe 11d and the exhaust pipe 11e on the heating side and the air supply pipe 12d and the exhaust pipe 12e on the hot water supply side.
There is a problem that the appearance is remarkably deteriorated because the piping is performed on one pipe.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a heating and hot water supply apparatus capable of easily performing piping work on an air supply / exhaust pipe and improving appearance. is there.

[0007]

In order to achieve the above object, the present invention relates to a heating and hot water supply apparatus having a hot water supply device for heating and a hot water supply separately such as a heat exchanger, a burner and a blower. A supply / exhaust pipe with a pipe structure, an air supply / distribution box that diverts the air introduced from the air supply port of the supply / exhaust pipe and guides them to the hot water generation equipment on the heating side and the hot water generation equipment on the hot water supply side, and hot water generation on the heating side An exhaust merging box that joins the exhaust gas from the equipment and the exhaust gas from the hot water generator on the hot water supply side and guides it to the exhaust port of the supply / exhaust pipe, and the outlet and hot water supply of the blower on the heating side
When the hot water generator on the heating side or hot water supply side is operated alone, the exhaust gas from the hot water generator on the operating side passes through the exhaust merging box and the hot water on the non-operating side. The main feature thereof is that exhaust gas backflow prevention means for preventing backflow to the generator is provided.

In the heating and hot water supply apparatus according to the present invention, by providing the air supply branching box and the exhaust merging box, 1
It is possible to perform both air supply and exhaust by using one air supply / exhaust tube, and the heating and hot water supply device can be installed only by piping the air supply / exhaust tube. Further, by providing the exhaust gas backflow prevention means, when the hot water generating device on the heating side or hot water supply side is operated alone, the exhaust gas from the hot water generating device on the operating side passes through the exhaust merging box to the hot water generating device on the non-operation side. Backflow can be prevented.

[0009]

1 and 2 show an embodiment of the present invention. FIG. 1 is a sectional view of a heating and hot water supply apparatus, and FIG. 2 is a supply and exhaust circuit diagram of the heating and hot water supply apparatus .

[0010] The heating and hot water supply apparatus of the present embodiment mainly comprises a hot water supply unit 1 and a heating unit 2.
The two housings are vertically joined to form a heating and hot water supply device.

The hot water supply unit 1 includes a housing 1a, a heat exchanger 1b, and a burner 1c connected to an upper surface of the heat exchanger 1b.
A blower 1d for supplying combustion air to the burner 1c;
A fuel pump (magnet pump) 1e for supplying liquid fuel to the burner 1c, an air supply / distribution box 1f, an exhaust merging box 1g, a supply / exhaust cylinder 1h having a double pipe structure, a supply / exhaust cylinder 1h, and an air supply / distribution box. Air supply line 1i connecting 1f;
An air supply line 1j connecting the air supply distribution box 1f to the intake port of the blower 1d, an air supply line 1k extending from the air supply distribution box 1f to the lower surface of the housing, a supply / exhaust tube 1h, and an exhaust gas consolidation box 1
g, an exhaust pipe 1m connecting the exhaust junction box 1g and the heat exchanger 1b, and an exhaust junction box 1g.
An exhaust pipe 1n extending from the bottom to the housing and a blower 1d
Bypass pipe BK1 branching from the outlet and extending to the lower surface of the housing
(Not shown), a hot water supply pipe 1o, a hot water discharge pipe 1p, and a control box (not shown) containing a hot water control circuit.

The heat exchanger 1b, the burner 1c, the blower 1d, the fuel pump 1e, the air supply / distribution box 1f, and the control box are housed in the housing 1a, and the exhaust merging box 1g and the air supply / exhaust cylinder 1h are mounted on the housing 1a. It is located outside. Also,
The heat exchanger 1b has a structure in which a water circulation pipe is wound around the outer surface of a hollow cylinder constituting a combustion chamber, and can heat water flowing in the pipe by combustion heat of the burner 1c. Further, the outlet of the blower 1d is directly connected to the burner 1c without passing through the air supply line.

On the other hand, the heating unit 2 includes a housing 2a, a heat exchanger 2b, a burner 2c connected to a side surface of the heat exchanger 2b, and a blower 2 for supplying combustion air to the burner 2c.
d, a fuel pump (magnet pump) 2e for supplying the liquid fuel to the burner 2c, an air supply line 2f connecting the burner 2c and the outlet of the blower 2d, and an air supply line extending from the intake port of the blower 2d to the upper surface of the housing. 2g, an exhaust pipe 2h extending upward from the heat exchanger 2b, and a branch from the outlet of the blower 2d.
Pipe BK2 (not shown) extending to the upper surface of the housing
, A water inlet pipe 2i for heating, a water outlet pipe 2j for heating, and a control box (not shown) containing a heating control circuit.

The heat exchanger 2b, the burner 2c, the blower 2d, the fuel pump 2e, and the control box are housed in a housing 2a. The heat exchanger 2b has a double-cylinder structure in which an annular water flow passage is formed between the cylinders, so that the water flowing in the annular passage can be heated by the combustion heat of the burner 2c.

The above-mentioned hot water supply unit 1 and the heating unit 2 are transported separately, and the housings of the two units 1 and 2 are joined together on site to form a heating and hot water supply device. For more information, connects the end of the supply duct 2g heating the end portion of the supply duct 1k of the hot water supply unit 1 unit 2 at a position indicated by a broken line in FIG. 2, the exhaust pipe 1n the hot water supply unit 1 And the end of the exhaust pipe 2h of the heating unit 2 are connected , and
The bypass pipe BK1 of the hot water supply unit 1 and the heating unit 2
While connecting the end of the bypass pipe BK2, the housing 1a of the hot water supply unit 1 is overlaid on the housing 2a of the heating unit 2, and as shown in FIG. Then, the housings 1a and 2a of both units 1 and 2 are connected and joined to each other, whereby the heating and hot water supply device is assembled.

In the air supply / distribution box 1f, a pipe 1i from the air supply / exhaust tube 1h is connected to the upper surface of the box, and pipes 1j, 1k + 2g from the blowers 1d, 2d are provided on the side of the box.
That it is connected to. Feeding mood flow box 1f This is flowing air introduced from the air supply port of the supply and exhaust pipe 1h (between the inner tube and the outer tube) in a box min, heating side hot water producing device and the hot water supply side of the hot water generating device Plays the role of leading to each of the.

The exhaust merging box 1g is connected to a pipe 11 from the supply / exhaust tube 1h on the upper surface of the box, and is connected to a pipe 1m, 1n + 2h from each of the heat exchangers 1b and 2b on the lower surface of the box.
Is connected. The exhaust gas merging box 1g combines the exhaust gas from the hot water generator on the heating side and the exhaust gas from the hot water generator on the hot water supply side in the box, and guides the exhaust gas to the exhaust port (inside the inner pipe) of the supply / exhaust tube 1h. Fulfill.

Further, the outlet of the blower 1d on the water heater side.
And the outlet of the blower 2d on the heating side are connected to the bypass pipe BK1.
And BK2.

The above-described heating and hot water supply apparatus has an inlet pipe 1 for hot water supply.
o and the outflow pipe 1p are connected to a water pipe and a domestic water pipe, and the heating inlet pipe 2i and the outflow pipe 2j are connected to a panel radiator or the like for use.

[0020] At the time of hot water supply, as shown by the solid line arrow in FIG. 2, the blower-out 1d based on operation of the air conduit 1i introduced from (between the inner and outer tubes) feed chimney air inlet of 1h , Is supplied to the burner 1c through the supply air distribution box 1f, the pipeline 1j, and the blower 1d. Further, the exhaust gas generated in the combustion chamber in the heat exchanger 1b is guided to the exhaust port (inside the inner pipe) of the supply / exhaust tube 1h through the pipe 1m and the exhaust merging box 1g. At this time, the water sent into the hot water supply water inlet pipe 1o is heated in the process of passing through the heat exchanger 1b, and is discharged.
i is sent out as hot water for hot water supply.

Further, during the heating, in the same manner as mentioned above, the blower-out 2d based on the operation of the air introduced from the air supply port of the supply and exhaust pipe 1h (between the inner tube and the outer tube) via line 1i, feeding mood It is sent to the burner 2c through the flow box 1f, the pipeline 1k + 2c, and the blower 2d. Further, the exhaust gas generated in the combustion chamber in the heat exchanger 2b is guided to the exhaust port (inside the inner pipe) of the supply / exhaust tube 1h through the pipeline 1n + 2h and the exhaust merging box 1g. At this time, the water sent into the heating water inlet pipe 2i is heated in the process of passing through the heat exchanger 2b, and is sent out from the water outlet pipe 2j as heating water for heating.

The hot water generators on the hot water supply side and the heating side are operated simultaneously.
When it is rotated, the hot water supply / exhaust passage and the heating side
In the air passage, a flow of air toward the exhaust port of the supply / exhaust cylinder 1h is generated.
Therefore, exhaust gas from each of the heat exchangers 1b and 2b is discharged.
The other heat exchangers 1b, 2b through the junction box 1g
There is no backflow towards.

On the other hand, when the hot water generator on the hot water supply side or on the heating side is operated alone, the exhaust gas from the heat exchanger on the operation side (heat exchanger 1b on the hot water supply side in FIG. 2 ) passes through the exhaust junction box 1g. 2 (see the dashed arrow in FIG. 2 ), but at this time, the blower on the operating side (the blower on the hot water supply side in FIG. 2) Part of the air blown out from 1d) flows into the non-operating-side hot water generation device through the bypass pipes BK1 and BK2 , and flows and exhausts air toward the air supply distribution box 1f from the bypass pipe connection point of the hot water generation device. Since the flow of air toward the merging box 1g is generated, the exhaust gas that is going to flow backward is stopped by the flow of air toward the merging box 1g. Backflow of exhaust gas is prevented for the hot water producing device driver side.

As described above, the heating and hot water supply apparatus of the present embodiment
According to the air supply branch box 1f and the exhaust merging box 1g
Is provided by one supply / exhaust cylinder 1h.
It is possible to perform both air and exhaust.
Installation of heating and hot water supply equipment can be performed only by piping construction for h
Along with reducing the number of pipes to be installed, the appearance is improved
Can be improved.

Also, a bypass pipe BK for preventing exhaust gas backflow.
1 and BK2, heating side or hot water supply side
When the hot water generation equipment of
Exhaust gas from the generator is passed through the exhaust junction box 1g
Prevents backflow to the non-operating hot water generator
Wear. Also, to prevent backflow of exhaust gas, the air supply
Although it is conceivable to incorporate a damper into the box 1f,
In comparison, the necessary parts and operation costs are eliminated.
Configuration can be simplified.

[0026]

As described in detail above, according to the present invention ,
By providing the air supply / distribution box and the exhaust merging box, it is possible to perform both air supply and exhaust by one air supply / exhaust tube, and it is possible to install the heating / hot water supply apparatus only by piping the air supply / exhaust tube. At the same time, the number of pipes to be piped can be reduced and the appearance can be improved. Further, by providing the exhaust gas backflow prevention means, when the hot water generating device on the heating side or hot water supply side is operated alone, the exhaust gas from the hot water generating device on the operating side passes through the exhaust merging box to the hot water generating device on the non-operation side. Backflow can be prevented. That is, by causing a part of the air blown out from the blower on the operation side to flow into the hot water generation device on the non-operation side through the bypass pipe, and generating a flow of air toward the exhaust merging box in the hot water generation device on the non-operation side, Exhaust gas backflow during isolated operation can be accurately prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a heating and hot water supply apparatus showing an embodiment of the present invention.

FIG. 2 is a supply and exhaust circuit diagram of the heating and hot water supply apparatus shown in FIG. 1;

FIG. 3 is a supply / exhaust circuit diagram of a heating / hot water supply apparatus showing a conventional example.

[Description of Signs] 1 ... Hot water supply unit, 1b ... Heat exchanger, 1
c: burner, 1d: blower, 1f: air supply branch box,
1g Exhaust junction box, 1h Supply / exhaust cylinder, 2 Heating unit, 2b Heat exchanger, 2c Burner, 2d Blower, BK1, BK2 ... Bypass pipe

Continuing from the front page (72) Inventor Michio Kitazume 20 Kotobukicho, Isesaki City, Gunma Prefecture, Japan Sanden Co., Ltd. (72) Inventor Junichi Kanzawa 20 Kotobukicho, Isesaki City, Gunma Prefecture, Japan Sanden Co., Ltd. (72) Invention Person Minoru Takayanagi 20 Kotobukicho, Isesaki City, Gunma Prefecture (72) Inventor Tomoyuki Iiyama 20 Kotobukicho, Isesaki City, Gunma Prefecture Inside Sanden Company Limited (72) Inventor Fujio Utsumi 20 Kotobukicho, Isesaki City, Gunma Prefecture Address Sanden Co., Ltd. (56) References JP-A-62-258926 (JP, A) JP-A 4-122934 (JP, U) JP-A 1-75747 (JP, U) (58) Fields investigated (Int.Cl. ⁶ , DB name) F24H 9/02 301

Claims (1)

(57) [Claims] 1. A heating and hot water supply system having separate hot water generators, such as a heat exchanger, a burner and a blower, for heating and hot water supply, comprising: a double-pipe air supply / exhaust pipe; A supply air distribution box that diverts the air introduced from the furnace and guides it to the hot water generator on the heating side and the hot water generator on the hot water supply, and exhaust gas from the hot water generator on the heating side and exhaust gas from the hot water generator on the hot water supply side. And an exhaust merging box that leads to the exhaust port of the supply / exhaust tube, and the outlet of the heating side fan and the outlet of the hot water supply side fan
It consists of a bypass pipe that connects and prevents exhaust gas from the hot water generator on the operating side from flowing back to the hot water generator on the non-operation side through the exhaust junction box when the hot water generator on the heating or hot water supply is operated alone. A heating and hot water supply device, comprising: