JPH0120584Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> This invention relates to a heating device that generates hot water using exhaust gas or exhaust heat from a stove, etc., and performs hot water heating.

<Prior art> It is well known to use exhaust gas or exhaust heat from a combustion device such as a stove to generate hot water, and circulate this water to a remote radiator using a circulation pump for hot water heating. .

However, in order to prevent the hot water heating heat exchanger from running dry, this conventional heating system cannot be operated by the stove alone (hot water heating is always performed).
As seen in Publication No. 52450, a system has been proposed in which stove-only operation and hot water heating can be selected.

<Problems to be solved by the invention> However, in the case where the stove can be operated independently or hot water heating can be selected, heat conduction due to combustion and Due to the heat trapped inside the outer frame and heat exchange chamber, the heat exchange chamber and the hot water heating heat exchanger themselves are heated to a considerably high temperature, resulting in overheating of other parts or unnecessary hot water when the stove is operated alone. This results in temperature rise or heat loss, and thermal efficiency also decreases.

<Means for solving the problem> The exhaust gas distribution path from the burner is equipped with an exhaust chamber having an exhaust port and a heat exchanger for heating hot water that creates hot water and connects it to a radiator via a circulation pump. In a heating device that uses a switching device to switch between a stove-only operation and a hot water combined operation in a heat exchange room, a return pipe is connected in place of the radiator, and combustion is adjusted regardless of the switching operation of the switching device. This adjustment handle is related to a heating device configured to close a switch element of a circulation pump when the adjustment handle is set to a certain firepower range of medium power combustion or higher.

<Function> In addition to the well-known combustion operation, the switching device 9 is used to operate the stove alone or to operate it in combination with hot water, depending on the purpose of use.

This independent operation of the stove is carried out for a relatively long period in autumn or spring, and at this time the radiator 20 is removed and the return pipe 21 is connected.

At this time, when the adjustment handle 24 is set to medium heat combustion or higher, the switch element 22 is also turned ON, and the circulation pump 19 transfers the hot water to the hot water heating heat exchanger 17, the cistern tank 18, and the return pipe 2.
1 is circulated, and the heat of the heated water is continuously released from the return pipe 21 to the outside of the outer frame 27.

<Embodiment> Reference numeral 1 denotes a pot-type burner, etc., and is located below a combustion chamber 2 made of a heat-resistant transparent material.

Reference numeral 3 designates a box-shaped heat exchanger, which is penetrated approximately at the center by a cylindrical exhaust guide tube 4 that communicates with the combustion chamber 2, and has an exhaust port 5 exclusively for combustion on one side wall surface which is an outlet for exhaust gas. Hot water exhaust ports 6 are opened in parallel with each other.

Reference numeral 7 denotes a partition plate which extends from the exhaust guide tube 4 to the inner wall surface on the side where the combustion-only exhaust port 5 and the hot water exhaust port 6 are provided, while integrating the upper and lower parts of the heat exchanger 3; and the hot water exhaust port 6.

Further, an exhaust port 8 is opened in the exhaust guide tube 4 to communicate the combustion chamber 2 and the heat exchanger 3, and the opening position of the exhaust port 8 is opened toward the hot water exhaust port 6 side.

Reference numeral 9 denotes a switching device provided in the heat exchanger 3 to open and close the combustion-only exhaust port 5 and the hot water exhaust port 6 when one is open and the other is closed. Two different closing plates 11 and 12 are fixed, and each closing plate 11 and 12 is located in front of the combustion exclusive exhaust port 5 and the hot water exhaust port 6, respectively, and the operating rod 1
There is an operation knob 1 on the tip of the 0 for operation from the outside.
3 is rotatably provided, and the pump switch 13' is turned on and off by this.

14 is an exhaust chamber that communicates with the hot water exhaust port 6 and discharges exhaust gas to the exhaust port 15;

16 is a heat exchange chamber communicating with the hot water exhaust port 6;
A heat exchanger 17 for heating hot water is sealed inside and communicated with the exhaust chamber 14.

Reference numeral 18 denotes a cistern tank for storing water, the upper part of which communicates with the hot water heating heat exchanger 17, and the lower part of which communicates with the circulation pump 19.

The other end of the hot water heating heat exchanger 17 and the circulation pump 19 are removably connected to a radiator 20 such as floor heating, and hot water is circulated to the radiator 20 to heat a remote location with hot water.

When the radiator 20 is not connected, the circulation pump 19 and the hot water heating heat exchanger 17 are connected through a return pipe 21 as shown in FIG.

22 is a switch element connected in parallel with the pump switch 13' in the electric circuit and in series with the circulation pump 19; the adjustment handle 24 of the fuel adjustment device 23 is large;
When set to medium heat combustion (heat power that boils the water in the cistern tank 18), it turns ON, and when set to low heat combustion (heat power that does not boil the water in the cistern tank 18), it turns on. When the heat sink 20 is connected, the switch element 22 is turned off by a locking means (not shown).
ON when the return pipe 21 is connected and the radiator 20 is not connected as shown in Figure 5.
-It is linked to OFF.

Also, in the electric circuit, there is a combustion blower 26 connected in series with the power switch 25, and when the stove is operated alone, the heat removed by cooling the exhaust chamber 14 is discharged from the gap in the outer frame 27, or is stored inside the outer frame 27. A control circuit 29 having a cooling blower 28 and the like for discharging the heat is connected.

Although not shown, it goes without saying that a dry firing prevention switch and other safety devices are connected in series with the power switch 25.

Next, to explain hot water heating, with the radiator 20 connected in advance, the switching device 9 is operated to switch to the second
As shown in the figure, the combustion-only exhaust port 5 is closed using the closing plates 11 and 12, and the hot water exhaust port 6 is opened, and a well-known combustion operation is performed.

Of course, at this time, the pump switch 13' is turned on and the circulation pump 19 starts circulating water.

As a result, the exhaust gas is transferred to the exhaust port 8 of the exhaust guide tube 4.
The hot water is immediately discharged through the hot water exhaust port 6 → heat exchange chamber 16 → exhaust chamber 14 → exhaust port 15.

At this time, since the heat exchanger 17 for heating hot water is installed inside the heat exchange chamber 16, the heat exchanger 17 for heating hot water is heated to raise the temperature of the water inside to a predetermined temperature.

As a result, the hot water is transferred to the hot water heating heat exchanger 17→
Hot water heating is performed by repeating the cycle of cistern tank 18 → circulation pump 19 → radiator 20 → hot water heating heat exchanger 17.

Next, in the case of heating by the stove alone, the switching device 9 is operated to open the combustion-only exhaust port 5 with the closing plates 11 and 12 as shown in Fig. 3, and the hot water exhaust port 6 is closed. The air is discharged from the exhaust port 8 of the cylinder 4, largely bypassing the heat exchanger 3, and passing through the combustion-only exhaust port 5→exhaust chamber 14→exhaust port 15.

Of course, at this time, the pump stove 13' is turned off and the circulation pump 19 is stopped.

Therefore, the entire heat exchanger 3 is sufficiently heated by the exhaust gas, and radiant heat or cooling blower 28 is applied to the surrounding area.
A large amount of hot air is emitted uniformly by the air blowing.

Furthermore, the heat exchange chamber 16 and the hot water heating heat exchanger 17 are heated by heat conduction due to heating by the stove alone, and by heat trapped in the outer frame 27 and the heat exchange chamber 16.
The temperature itself is also raised to a fairly high temperature.

At this time, for some reason, the hot water heating heat exchanger 17
If the water or hot water inside the burner is about to boil, a safety device (not shown) detects this and stops energizing all electrical circuits, extinguishing the burner 1 to prevent danger.

By the way, if the radiator 20 is not installed and the stove is operated alone by connecting the tuft pipe 21 due to the convenience of each household or in the relatively high temperature seasons of autumn or spring, the inside of the cistern tank 18 and the hot water heating heat exchanger 17 may be When water or hot water is heated to a high temperature due to heat conduction or heat trapped inside the outer frame 27, the water or hot water tries to boil, but the combustion at this time is a high- or medium-power combustion. Therefore, even if the heater is operated independently,
Switch element 22 is automatically turned on and circulation pump 1 is turned on.
9 is also started, and therefore the heat of the heated hot water is continuously released to the outside of the outer frame 27 via the return pipe 21,
The heating effect is enhanced, the temperature of the exhaust gas from the exhaust port 15 is lowered, and the temperature inside the outer frame 27 is also lowered, thereby improving the thermal efficiency when the stove is operated independently.

Of course, there is no possibility that the equipment or the like inside the outer frame 27 will be damaged due to heat.

<Effect of the invention> The exhaust gas flow path from burner 1 is connected to exhaust port 1.
5 and a heat exchange chamber 16 equipped with a hot water heating heat exchanger 17 which produces hot water and is connected to a radiator 20 via a circulation pump 19, the stove can be operated independently by the switching device 9. In a heating device that switches to hot water operation, a return pipe 21 is connected instead of the radiator 20, and the adjustment handle 24, which adjusts combustion regardless of the switching operation of the switching device 9, is connected to a constant heating power of medium heating combustion or higher. Since the adjustment handle 24 is configured to close the switch element 22 of the circulation pump 19 when the range is set, it does not trap heat in the outer frame or excessively raise the temperature of the internal equipment even when the stove is operated alone. The heat is released to the outside of the outer frame and the exhaust temperature of the exhaust gas can be lowered without causing any damage, thereby substantially improving the thermal efficiency of the stove.

Moreover, there is no damage to internal equipment due to excessive temperature rise due to heat being trapped within the outer frame.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view when a heat sink according to an embodiment of this invention is connected, Figs. 2 and 3 are cross-sectional views, and Fig. 4 is a cross-sectional view when the radiator is connected.
The figure is an explanatory diagram of the switching device, FIG. 5 is a longitudinal cross-sectional view when the radiator is not connected, and FIG. 6 is an electric circuit diagram. DESCRIPTION OF SYMBOLS 1... Burner, 9... Switching device, 14... Exhaust chamber, 15... Exhaust port, 16... Heat exchange chamber, 17...
...Hot water heating heat exchanger, 19...Circulation pump, 2
2...Stove element, 24...Adjustment handle.

Claims (1)

[Scope of utility model registration request] The exhaust gas flow path from burner 1 is connected to exhaust port 1.
5 and a heat exchange chamber 16 equipped with a hot water heating heat exchanger 17 which produces hot water and is connected to a radiator 20 via a circulation pump 19, the stove can be operated independently by the switching device 9. In a heating device that switches to hot water operation, a return pipe 21 is connected instead of the radiator 20, and the adjustment handle 24, which adjusts combustion regardless of the switching operation of the switching device 9, is connected to a constant heating power of medium heating combustion or higher. The heating device is configured such that the adjustment handle 24 closes the switch element 22 of the circulation pump 19 when the range is set.