JPH0216222Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a heating machine with a built-in heat exchanger.
In particular, the present invention relates to a heating machine with a built-in heat exchanger that makes it possible to change the amount of heat exchange and change the exhaust direction of exhaust gas within the heating machine.

[Conventional technology]

Recently, some heaters that use combustion of oil or gas have built-in heat exchangers. A fluid circulation circuit is connected to the heat exchanger, which sends heated fluid, such as hot water, to a floor heating appliance and returns it to the heat exchanger.

In a conventional heater of this kind, as shown in FIG. 4, a pot 2 (or burner) containing oil is provided inside a heater body 1 and below the heater body 1. An upper combustion tube 5 is mounted above the pot 2 via a lower combustion tube 3 and an intermediate combustion tube 4 formed of a transparent material such as glass above the lower combustion tube 3. The upper combustion tube 5 is the intermediate combustion tube 4.
It has a cylindrical part 51 which is placed on the upper end of the cylinder. From the upper end of the cylindrical part 51, the cylindrical part 51
It has an exhaust lower plate 52 extending outward. The lower exhaust plate 52 has a side plate 53 on its periphery extending upward from the periphery. The upper end of the opening of the side plate 53 is closed by an exhaust upper plate 54.

Inside the upper combustion tube 5, a heat exchanger 6 is installed near the side plate 53 and on the upper surface of the lower exhaust plate 52.
is provided. An exhaust port 55 is formed in the exhaust upper plate 54 above the heat exchanger 6 . Also,
A partition plate 56 is provided on the windward side of the heat exchanger 6 and divides the exhaust gas into a passage 57 through which it is directly discharged from the exhaust port 55 and a passage 58 through which it passes through the heat exchanger 6 and then leads to the exhaust port 55. A damper 7 is rotatably attached to the passage 58. That is,
The damper 7 opens and closes an exhaust passage 58 formed between the heat exchanger 6 and the partition plate 56.

Now, when the oil in the pot 2 is ignited and burned with the damper 7 opening the exhaust passage 58, the exhaust gas rises in the direction of the arrow shown. That is, the exhaust gas rises toward the upper combustion tube 5 and is guided toward the exhaust passage 57 and the exhaust passage 58. As a result, the exhaust gas is exhausted from the exhaust port 55 either directly or through the heat exchanger 6. heat exchanger 6
The system takes in the heat of the exhaust gas, heats the fluid inside it, and sends it to a floor heating device (not shown) using a circulation means such as a circulation pump. After the heating fluid radiates heat in the floor heating equipment, the heating fluid passes through the heat exchanger 6 again.
By repeating the fluid circulation back to , floor heating can be performed.

[Problem that the invention attempts to solve]

However, in the heater with a built-in heat exchanger described above, since the heat exchanger 6 is located near the exhaust port 55, the path for the exhaust gas to reach the heat exchanger 6 becomes long. Therefore, the temperature of the exhaust gas decreases and is sent to the heat exchanger 6, resulting in a problem that sufficient thermal energy cannot be obtained.
In particular, when the amount of combustion is small, there is a problem that the amount of heat exchange is insufficient.

Further, since the exhaust port 55 is provided near the heat exchanger 6, the position of the chimney to be attached to the exhaust port 55 is also limited, which causes problems regarding the installation location.

Furthermore, since soot tends to accumulate in the heat exchanger 6, causing a decrease in heat exchange efficiency, the heat exchanger 6 is required to be cleaned regularly. However, heat exchanger 6
Since its leeward end is blocked by a partition plate 56 except for a part (exhaust gas outlet), it is very difficult to clean it.

Therefore, the purpose of the present invention is to increase the amount of heat exchanged by a heat exchanger that takes in heat from exhaust gas, and
To provide a heating machine with a built-in heat exchanger which allows selection of a part where an exhaust port is provided without being limited to one place.

[Means and actions for solving problems]

The present invention provides a heating machine including a vertical combustion tube extending vertically, and a horizontal combustion tube extending horizontally, which is connected to the upper end of the vertical combustion tube and guides exhaust gas from the vertical combustion tube into left and right halves. A partition wall is removably provided in the upper part of the vertical combustion tube to provide an annular heat exchange chamber, and a heat exchanger is disposed in the heat exchange chamber, and the horizontal combustion tube has the heat exchange chambers on the left and right, respectively. First and second dampers are provided to open and close each hole and the passage of the horizontal combustion tube, one hole being an exhaust gas inlet to the heat exchange chamber and the other being an exhaust gas outlet. The present invention is characterized in that the exhaust gas is configured to be able to switch in and out of the heat exchange chamber in opposite directions.

〔Example〕

FIG. 1 shows a cross-sectional view of the main parts of an embodiment of the present invention. This heating machine consists of a part that burns fuel such as oil or gas, that is, a lower combustion tube 20.
and an intermediate combustion tube 21 provided above and made of a transparent material such as glass, forming a vertical combustion tube. A horizontal combustion tube 30 is connected to the upper part of the vertical combustion tube so that a T-shaped space is formed between the vertical combustion tube and the vertical combustion tube. The horizontal combustion tube 30 is composed of a lower plate 31 and an upper lid 32. As shown in the perspective view in FIG. 2, the lower plate 31 has an opening 311 in the center and holes 312 and 3 on both sides of the opening 311.
It has 13. The lower plate 31 also has holes 312,
Duct members 314 and 315 swelled below 313
and these duct members 314, 3
15 has a cylindrical body 316 whose upper end is connected to 15.
The lower end of the cylinder 316 has a flange 31 facing inward.
6-1 is provided. This lower plate 31 has a mouth edge of the opening 311 and a flange 316 of the cylindrical body 316.
A heat shield cylinder 33 is provided using 1 and 1. That is, the heat shield cylinder 33 is a cylinder having the same diameter as the opening 311, and has a flange facing outward at its upper end.
It has a length that reaches the flange 316-1 of the cylinder body 316 when this flange is hung on the edge of the opening 311. In this way, the heat shield cylinder 33 is detachably provided on the lower plate 31.

In this way, an annular heat exchange chamber 34 is formed in the upper part of the vertical combustion tube, and this heat exchange chamber 34 communicates with the space inside the horizontal combustion tube 30 via the holes 312 and 313. A coil-shaped heat exchanger 35 is disposed within the heat exchange chamber 34 . The heat exchanger 35 includes
For example, a fluid circulation circuit is connected that sends a fluid such as hot water to the floor heating equipment and returns it to the heat exchanger 35 again.

The lower plate 31 is further provided with dampers 36a and 36b located in the middle of the holes 312 and 313, spanning the holes. These dampers, for example, the damper 36a, open and close the passage of the horizontal combustion tube 30 and the half of the hole 312.

The upper lid 32 has an opening 321 larger than the opening 311 at a position corresponding to the opening 311 of the lower plate 31, and has exhaust ports 322, 323 on both sides. The opening 321 is closed with a combustion lid 324. One of the openings 322 and 323 (opening 322 in this case) is connected to the lid 3 in response to switching of the dampers 36a and 36b.
25, and the other (opening 323 here) is connected to an exhaust pipe 37. As is clear from the figure, the horizontal combustion tube 30 is made symmetrically with respect to the central axis of the vertical combustion tube. In FIG. 1, the part indicated by the broken line is the combustion tube for secondary combustion, and the combustion lid 32
4 is integrally attached. Note that when the exhaust pipe 37 is connected to the opening 323 as shown in the figure, half of the hole 313 on the same side as the opening 323, that is, half of the hole 313 closer to the opening 311 is screwed to the lower plate 31. It is blocked by a shielding plate 38. The dampers 36a and 36b are switched in conjunction with a lever provided outside the heater body.

The illustrated damper position indicates a state in which heating is performed by radiation from the heater body and the fluid in the heat exchanger 35 is heated by combustion exhaust gas to perform floor heating or the like. That is, by placing both the dampers 36a and 36b in an upright state, the passage of the exhaust gas rising up the intermediate combustion tube 21 toward the exhaust pipe 37 is blocked by the damper 36b, and the hole 312 is opened and the hole 313 is closed.
Since the right half of it is open, it flows into the heat exchange chamber 34 through the hole 312. And heat exchange room 3
The exhaust gas that has exchanged heat with the fluid in the heat exchanger 35 in the heat exchanger 4 is discharged from the exhaust pipe 37 via the hole 313 and the opening 323.

Figure 3 shows a state in which floor heating is performed with a low amount of heat (low capacity). That is, in this state, both dampers 36a and 36b are knocked down, and especially damper 36b
completely closes the hole 313 together with the shielding plate 38. Note that the circulation pump is operated to circulate the fluid. As a result, the exhaust gas rising from the intermediate combustion tube 21 does not flow into the heat exchange chamber 34.
The gas is directly discharged to the exhaust pipe 37 as it is.
That is, although the left half of the hole 312 is open, the exit side of the heat exchange chamber 34 is blocked by the damper 36b, so there is no inflow of exhaust gas, and on the contrary, the pressure inside the heat exchange chamber 34 is slightly reduced due to the draft phenomenon. become a state. When floor heating is not performed, the circulation pump is also stopped at the damper position shown in Figure 3.

As described above, since the heat exchanger 35 is disposed within the heat exchange chamber 34 formed in the upper part of the vertical combustion tube near the combustion section, the amount of heat exchange can be increased.

Further, the horizontal combustion tube 30 is made symmetrically with respect to the central axis of the vertical combustion tube, and the exhaust position can be changed to either the left or right by simply changing the connection position of the exhaust pipe 37 and the installation position of the shield plate 38. That is, in FIG. 1, the exhaust pipe 37 is connected to the opening 322, the opening 323 is closed with the lid 325, and further,
The shielding plate 38 may be replaced so as to close the right half of the hole 312. In this way, the damper 36a,
36b, the inlet of the exhaust gas to the heat exchange chamber 34 can be switched to the hole 313 side, and the outlet can be switched to the hole 312 side without changing the mounting position. Note that in this case, the dampers 36a, 3
In the figure, 6b falls down counterclockwise instead of clockwise and hits hole 31.
It is configured to block half of 2,313. This can be done by combining the dampers 36a and 36b with a lock mechanism so that they can be rotated by 90 degrees to the left or right.

Furthermore, when the combustion lid 324 is removed, the heat shield cylinder 33
Since it is also removable, it can be taken out of the heater body using the opening 321 and the heat exchanger 35 can be easily cleaned.

[Effect of idea]

As described above, according to the heating machine with a built-in heat exchanger of the present invention, since the heat exchanger is provided in a portion where the exhaust gas temperature is high, the amount of heat exchange can be increased.

In addition, since the heat exchanger is installed at the top of the vertical combustion tube, the position of the exhaust port of the horizontal combustion tube can be freely selected, and the position of the exhaust pipe connected to the exhaust port is not restricted. Therefore, there are no restrictions on where the heater can be installed. Moreover, regardless of whether the exhaust port of the horizontal combustion tube is located on the left or right, the exhaust gas passage will simply be in the opposite direction, forming essentially the same exhaust gas passage, so the thermal efficiency of the heat exchanger will change. do not.

Furthermore, since the heat shield tube forming the heat exchange chamber can be easily removed, the heat exchanger can be easily cleaned and can be used without deterioration of heat exchange efficiency due to accumulation of soot or the like.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the main parts of an embodiment of the present invention.
2 is a perspective view of a part of the horizontal combustion tube and the heat shield tube shown in FIG. 1, FIG. 3 is a vertical sectional view of the embodiment shown in FIG. 1 with the damper switched, and FIG. A schematic sectional view of a conventional example. In the figure, 20 is a lower combustion tube, 21 is an intermediate combustion tube,
30 is a horizontal combustion tube, 35 is a heat exchanger, 36a, 36
b is a damper, 37 is an exhaust pipe.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A vertical combustion tube that extends vertically, and a horizontal combustion tube that extends horizontally and is connected to the upper end of the vertical combustion tube and divides the exhaust gas from the vertical combustion tube into left and right halves and guides it. In the heater, a partition wall is removably provided in the upper part of the vertical combustion tube to provide an annular heat exchange chamber, a heat exchanger is disposed in the heat exchange chamber, and a heat exchanger is provided in the heat exchange chamber; , a hole communicating with the heat exchange chamber is provided, and first and second dampers are provided for opening and closing each hole and a passage of the horizontal combustion tube, one hole being an exhaust gas inlet to the heat exchange chamber and the other being an exhaust gas inlet to the heat exchange chamber. 1. A heating machine with a built-in heat exchanger, characterized in that the hole is used as an exhaust gas outlet so that exhaust gas can be switched in and out of the heat exchange chamber in opposite directions. 2 Utility Model Registration Scope of Claims In the heating machine as set forth in claim 1, the horizontal combustion tube comprises a lower plate connected to the vertical combustion tube and an upper lid having holes for exhaust gas discharge on the left and right sides, and the upper lid is a heating machine with a built-in heat exchanger, characterized in that when an exhaust pipe is connected to one hole, the other hole is closed. 3. In the heating machine according to claim 2 of the utility model registration claim, the upper lid has a hole at a location corresponding to the top of the vertical combustion cylinder, and the hole can be opened and closed by a lid member, and the upper lid has a hole that can be opened and closed by a lid member, and A heating machine with a built-in heat exchanger, characterized in that the partition wall is removable.