JPS6252365A - Stove mounting type heat exchanger - Google Patents

Abstract

PURPOSE:To prevent overheating of a stove by a method wherein the width of a damper, located between a heat exchanging section provided with heat exchanging fins and the combustion tube of the stove, is made smaller than the width of heat exchanging section. CONSTITUTION:The heat exchanger 1 is attached to the lower surface of a ceiling plate 20 of an open type stove 2 while the amount of collecting heat can be regulated by opening and closing a damper 4 located between the heat exchanging section and a combustion tube 22. In this case, the width of the damper 4 is made smaller than the same of heat exchanging section and a part of combustion exhaust gas passes through the heat exchanging section even when the damper 4 is closed, therefore, the combustion exhaust gas will never overheat the side walls of the stove 2. On the other hand, the combustion exhaust gas will never rise the temperature of oil in an oil tank 25 too much, therefore, the stove may be safe.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a stove-mounted heat exchanger that is attached to an open stove and extracts heat from the stove for hot water floor heating, etc. 6 [Background Art] There is a heating system that collects heat for hot water floor heating or the like using a heat exchanger attached to a commercially available open stove.

In this case, open-type stoves usually do not have a variable amount of heat, so a damper is used to vary the amount of heat taken. The heat exchanger l attached to the lower surface of the top plate 20 of the stove 2, a conventional example of which is shown in FIG. It consists of a damper 4 provided below the exchange part, and the damper 4 is formed from a guide plate 40 and a slide plate 41 that is slidable with respect to the guide plate 40. The guide plate 40 and the slide plate 41 are each provided with elongated holes 42 and 43 that are long in a direction perpendicular to the sliding direction of the slide plate 41, and by sliding the slide plate 41, the holes 42 and 43 overlap. The amount of heat flowing from the combustion tube 22 to the heat exchange section is thereby adjusted. FIG. 9 shows the damper 4 in a closed state, and FIG. 10 shows the damper 4 in an open state.

Here, as is clear from the figure, the conventional damper 4 had the following problems because its width was larger than the width of the heat exchange section. That is, when the damper 4 is closed as shown in FIG. 9, the heated air (combustion exhaust gas) from the combustion tube 22 is blocked by the damper 4 and flows around the heat exchanger 1. This has the risk of heating the stove 2 itself and overheating the stove 2. Especially in the case where the oil tank 25 is installed on the side, the oil temperature will rise and become dangerous.

[Object of the Invention] The present invention has been made in view of the above points, and its purpose is to prevent the stove from overheating or the oil temperature to rise, resulting in a dangerous situation even when the damper is closed. The objective is to provide a safe stove-mounted heat exchanger that will not cause any damage to the stove.

[Disclosure of the Invention 1 The present invention provides a heat exchanger to be attached to an open stove, which includes a damper located between a heat exchange part provided with heat exchange fins and a combustion tube of the stove, This is because the width is smaller than the width of the heat exchange section, and even when the damper is closed, part of the flow of combustion exhaust gas passes through the heat exchange section. be.

The present invention will be described in detail below based on the illustrated embodiment. As shown in FIG. 11, a support frame 13 having a U-shaped planar shape, and a damper 4 attached to the support frame 13 and located below the heat exchange section consisting of the meandering vibrator 11 and the radiation fins 12. Both ends of the pump 11 are connected to metal connecting pipes 15 for connecting to a pump unit.

As shown in FIGS. 5 to 7, the damper 4 consists of a horizontal piece and a vertical piece bent upward from the front edge of the horizontal piece. The slide plate 41 is slidable back and forth on the horizontal piece by being guided by guide pieces formed on the left and right edges, and the upper part of the vertical piece is fixed to the support frame 13. It has become. Both the guide plate 40 and the slide plate 41 are provided with a plurality of elongated holes 42 and 43 at regular intervals in a direction perpendicular to the sliding direction of the slide plate 41.
．． 43 can be changed by sliding a slide plate 41.

Note that, as shown in FIG. 6, the width between these long holes 42 and 43 is wider than that of the long holes 42 and 43 (L, = L 2 >
L 3 = L 4 ). Further, a protruding piece 46 is provided at the front end of the slide plate 41 and protrudes forward through the vertical piece of the guide plate 40 . Tunquan 1
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[Slide 41 back and forth, that is, adjust the amount of opening and closing of damper 4.

Ribs 45 provided on the lower surface of both sides of the slide plate 41
The slide plate 41 is moved to the guide plate 4 by contacting the horizontal piece.
This is to allow the six slide plates 41 to slide back and forth smoothly when the slide plates 41 are distorted due to heat.

The heat exchanger 1 configured as described above is attached to the lower surface of the top plate 20 of the open type stove 2, as shown in Figure tJS1 and Figure 2, and! @ As shown in Figure 1, the amount of heat extracted is reduced by closing the damper 4 located between the heat exchange section and the combustion tube 22, and as shown in Figure 3, the amount of heat extracted is reduced by opening the damper 4. Can be many. Here, when damper 4 is closed, @
As is clear from Figure 1, the width of the damper 4 is narrower than the width of the heat exchanger, and therefore some combustion exhaust gas passes through the heat exchanger and burns the side wall of the stove 2. Exhaust gas will not cause overheating.

M mountain 9114'S resistance 9n 1m nn) Js p J
-1/++ x hlhThis 4 as -p is a diffusion hole.

Although the heat exchanger 1 is shown here as being removably attached to the top plate 20 of the stove 2, it may be built internally in the top plate 20.

[Effect of the invention J As described above, in the present invention, even if the damper for making the amount of heat extraction variable is fully closed, some combustion exhaust gas flows to the heat exchange section. , damper 1
1! ! The flow of combustion exhaust gas does not change significantly depending on the closed amount, and it is safe because it does not overheat the stove or increase the temperature of the oil in the oil tank.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of an embodiment of the present invention, Fig. 2 is a perspective view of the same, Fig. 3 is a longitudinal sectional view of the same, Fig. 4 is a perspective view of the same, and Fig. 5 is a perspective view of the damper. , Fig. 6 is a cross-sectional view of the damper, Fig. 7 is a view taken in the direction of arrow A in Fig. 5, Fig. 8 is a perspective view of the conventional example, and Figs. 9 and 10 are longitudinal sectional views of the conventional example. There, 1 is a heat exchanger, 2 is a stove, 4 is a damper, 11
12 is a heat exchange fin, 22 is a combustion tube, 4 is a meandering pipe,
0 indicates a guide plate, 41 indicates a slide plate, and 42.43 indicates a long hole. Agent Patent Attorney Ishi 1) Ai 741 Figure 2 Figure 18 Figure Name 9

Claims (2)

[Claims] (1) A heat exchanger that is attached to an open stove, and includes a damper located between the heat exchange part provided with heat exchange fins and the combustion tube of the stove, and the width of the damper is the same as that of the heat exchange part. A stove-mounted heat exchanger characterized by being smaller than its width. (2) The damper is composed of a guide plate and a slide plate that is slidable on the guide plate, and the lower surface of the slide plate is provided with a protruding rib that slides against the upper surface of the guide plate. A stove-mounted heat exchanger according to scope 1.