JP2002372310A - Stove with built-in hot-water heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stove with a built-in hot-water heat exchanger preventing the generation of boiling sound due to the heating of the hot-water heat exchanger to a high temperature even at the time of the single operation of the stove. SOLUTION: This stove is provided with a burner part 1 producing combustion gas by combustion, a main heat exchanger 13 circulating the combustion gas produced by the burner part 1 to generate heat for space heating by radiation and convection from the surface, a bypass 19 bypassing the main heat exchanger 13 from the burner part 1 to bring the combustion gas into communication; and a hot-water heat exchange chamber 24 storing a hot-water heat exchanger 23 inside to allow it to perform heat exchange with the combustion gas. A damper chamber 20 communicating with an exhaust path 25 and having a damper for switching paths is provided among the main heat exchanger 13, the bypass 19, the combustion gas and the hot-water heat exchange chamber 24. At the time of the single use of the stove, a communication is provided between the main heat exchanger 13 and the exhaust path 25, and the communication on the bypass 19 side is shut off. Thus, the stove capable of preventing boiling sound securely and used at ease is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stove with a built-in hot water heat exchanger capable of performing a stove alone operation by radiation and convection and a combined operation with hot water heating such as simple floor heating.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent No. 2952952, for example, a branch port provided on the back side of a combustion cylinder and behind a middle of a red-hot body is disclosed. By providing the hot water heat exchanger in communication, high-temperature combustion gas can be supplied to the hot water heat exchanger during the combined operation of the floor heating and the radiant heating of the stove, and good floor heating can be performed. Was.

[0003]

In this conventional apparatus, however, the hot water heat exchanger is provided very close to the combustion cylinder and the red hot body, so that the hot water heat exchanger is heated to a high temperature even when the stove is operated alone. It will be heated, and the boiling sound of the inside warm water will be generated, or when transitioning to the combined heating and heating operation, the circulating water flows through the hot water heat exchanger, causing instantaneous boiling. Not only gives the user anxiety,
In severe cases, you must extinguish the fire and wait for it to cool down,
There was a problem that the combined operation could not be started.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention focuses on this point. In particular, the present invention relates to a burner for generating combustion gas by combustion, and a flow of combustion gas generated by the burner. And a main heat exchanger that emits heat for heating by radiation and convection from the surface, a bypass path that bypasses the main heat exchanger and allows combustion gas to flow, and a combustion gas containing the hot water heat exchanger therein. A hot water heat exchange chamber for exchanging heat with a hot water heat exchange chamber, and a stove provided between the main heat exchanger and the bypass and the hot water heat exchange chamber, the damper chamber having a damper for communicating with an exhaust passage and switching a passage, and In the single operation, the main heat exchanger and the exhaust path are communicated, and the communication on the bypass path side is cut off. In the hot water heating combined operation, the main heat exchanger side is cut off, and the bypass path and the hot water heat exchange chamber and the hot water Heat exchange chamber and exhaust Those for communicating the road.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the stove alone operation, the second damper 35 in the damper chamber 20 is connected to the main heat exchanger 13 and the exhaust passage 2.
5 and the first damper 30 cuts off the bypass passage 19 side, so that the combustion gas generated by the combustion of the burner unit 1 rises in the heat-resistant transparent body combustion cylinder 3 and hangs from above. The heat flows into the upper main heat exchanger 13 while heating the red heat body 4, and heat is generated from the surface of the main heat exchanger 13 by radiation and convection by using a convection fan (not shown). The room is heated.

Next, in the combined operation with hot water heating, the first damper 30 of the tamper chamber 20 communicates with the bypass passage 19, the hot water heat exchange chamber 24 and the exhaust passage 25, and the second damper 35 is connected to the main heat exchanger 13 The combustion gas generated by the combustion of the burner unit 1 rises in the combustion tube 3 and heats the red hot body 4 to a red heat state, thereby performing radiant heating and convection heating using the convection fan. After that, the combustion gas flows upward and without flowing through the main heat exchanger 13,
The heat exchange with the hot water heat exchanger 23 is performed in the hot water heat exchange chamber 24 through the bypass 19, and the temperature of the hot water is raised to perform the floor heating satisfactorily.

Therefore, the hot water heat exchange chamber communicates with the main heat exchanger via the damper chamber, and is separated from the main heat exchanger and the combustion cylinder. There is no problem that noise is generated, and even during combined operation, the hot water heat exchanger is heated by the combustion gas that flows through the bypass and does not lower the temperature, so that good floor heating with high temperature can be obtained. It is.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a stove with a built-in hot water heat exchanger according to the present invention. Reference numeral 1 denotes a burner section of a pot type or the like, which receives combustion air supplied from a combustion fan 2 and fuel supplied by a fuel supply means (not shown) to burn and generate combustion gas.

3 is located on the burner section 1 and
A combustion tube composed of a heat-resistant transparent body communicated with the combustion tube, and a tubular glowing body 4 is provided above the combustion tube, and is heated by combustion gas to glow red. Reference numeral 5 denotes a radiation chamber formed by surrounding the rear of the combustion tube 3 with a reflection plate 6, and reflects radiation of the glow of the glow 4 into the room to perform radiation heating as a stove.

Reference numeral 7 denotes a branch chamber which communicates with the combustion cylinder 3 through a communication port 8. The communication chamber 8 is covered with a guide plate 10 having an opening 9 on one side only. First and second outlets 11 and 12 are provided.

Reference numeral 13 denotes a main heat exchanger provided on the branch chamber 7, a first collecting portion 14 communicating with the first outlet 11,
A second collecting portion 17 formed by partitioning a ventilation chamber 15 communicating with the second outlet 12 with a partition plate 16;
And a plurality of heat exchange pipes 18 connecting between the second gathering portion 17 and the surrounding air is heated by heat exchange by flowing a combustion gas and convection is performed, thereby heating the room as a stove. Is what you do.

The second outlet 12 and the ventilation chamber 15 form a bypass 19 for bypassing the combustion gas without flowing through the main heat exchanger 13.

Reference numeral 20 denotes the second collecting part 17 and the first distribution pipe 2
A hot water heat exchanger 23 for heating the hot water passing therethrough by the flow of the combustion gas is accommodated in the lower part on the other side of the damper chamber, which communicates with the air through the ventilator 1 and communicates with the ventilation chamber 15 through the second circulation pipe 22. The hot water heat exchange chamber 24 communicates with the exhaust passage 25 projecting to the outside below.

The interior of the damper chamber 20 is divided into four chambers,
The first chamber 26 that communicates with the second flow pipe 22 is provided with a first damper 30 that opens and closes a first opening 29 that connects a second chamber 28 having an inlet 27 of the hot water heat exchange chamber 24 below. Further, below the third chamber 31 communicating with the first circulation pipe 21, the fourth chamber 33 having the outlet 32 of the hot water heat exchange chamber 24 and the exhaust passage 25 has the third chamber 31 and the fourth chamber 33. And a second damper 35 for alternately opening and closing a second opening 34 connecting the two and an outlet 32 of the hot water heat exchange chamber 24. The first and second dampers 30, 35 constitute a damper. .

Numeral 36 denotes a driving means comprising an actuator or the like for simultaneously driving the first damper 30 and the second damper 35. One driving lot 37 to which the first damper 30 and the second damper 35 are fixed, and a driving lot 37 37 and the drive means 36 are connected via a crank mechanism 38.

Reference numeral 39 denotes a cistern tank 40 for supplying hot water.
The hot water heated to a high temperature in the hot water heat exchanger 23 is circulated to a radiator (not shown) for floor heating by a circulation pump communicating with the hot water heat exchanger 23 through Is again circulated through the hot water heat exchanger 23 and reheated, and then sequentially circulated to perform hot water heating in combination with heating by the stove.

Next, the operation of the embodiment of the present invention will be described. First, in the stove alone operation, as shown in FIGS. 5 and 6, by closing the first opening 29 with the first damper 30, the inlet 27 side of the hot water heat exchange chamber 24 is closed, and the circulation and the bypass passage of the second circulation pipe 22 are performed. 19, and the second damper 35 opens the second opening 34 and shuts off the outlet 32 of the hot water heat exchange chamber 24, thereby connecting the first circulation pipe 21 to the exhaust passage 25.

If the burner unit 1 is started to burn in this state, the generated combustion gas rises in the combustion tube 3 and
Is heated to a red heat state, the red heat state is reflected by the reflection plate 6 to perform radiant heating, and at the same time, convection heating is performed using a convection fan. After that, the combustion gas flowing into the branch chamber 7 flows through the main heat exchanger 13 from the first outlet 11 because the bypass passage 19 is blocked by the first damper 30, and exchanges heat with outside air. The room is heated by convection heating using hot air after replacement, and is discharged from the damper room 20 to the outside through the exhaust path 25.

Next, in the combined operation of the stove and the hot water heating such as floor heating, the first opening 29 is opened by the first damper 30 as shown in FIGS. It opens and communicates with the second flow pipe 22 and the bypass passage 19, and connects the second damper 35 to the hot water heat exchange chamber 24.
Is opened, and the second opening 34 is closed on the opposite side to shut off the flow on the main heat exchanger 13 and the first flow pipe 21 side.

In this state, the burner unit 1 starts burning or
If the combustion is continued as it is during the combustion, the generated combustion gas rises in the combustion tube 3 to make the red-hot body 4 a red-hot state, and the red-light state is reflected by the reflector 6 to perform radiant heating, and at the same time, the convection fan The convection heating is also performed by using. Thereafter, the combustion gas flowing into the branch chamber 7 is supplied to the main heat exchanger 13.
Since the side is blocked by the second damper 35, the gas enters the ventilation chamber 15 from the second outlet 12, enters the damper chamber 20 via the first circulation pipe 21, and enters the hot water heat exchange chamber 24.
The air is discharged through the exhaust passage 25 while flowing through the inside.

At this time, the hot water heat exchanger 23 exchanges heat with the combustion gas flowing between the inlet 27 and the outlet 32 of the hot water heat exchange chamber 24, and the temperature of the hot water inside rises and becomes high-temperature water and circulates. The pump 39 drives and circulates through a radiator or the like for floor heating, and performs heating by floor heating together with radiant heating and convection heating by a stove.

Accordingly, in the combined operation, the combustion gas is not circulated to the main heat exchanger 13 but is circulated through the bypass 19 and exchanges heat with the hot water heat exchanger 23. In this state, heat is exchanged, efficient floor heating is performed, and heating as a stove is also performed by the radiant heat of the red hot body 4 and a convection fan.

[0023]

As described above, according to the present invention, the hot water heat exchanger is not exposed to or comes into contact with the combustion gas or the hot air during the stove alone operation, the generation of the boiling sound of the hot water and the start of the hot water heating operation. Sometimes hot water boils instantaneously and hot water heating is not started, there is no need to extinguish and cool down once, it is possible to transition to combined operation while continuing stove independent operation, extremely easy to use It is good and can be used with confidence.

Further, during the combined operation, the combustion gas is supplied to the hot water heat exchanger by bypassing the main heat exchanger. Therefore, the heat is exchanged well with the high temperature combustion gas, and the hot water heating also has a quick temperature rise and a high temperature. Good heating can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a stove to which an embodiment of the present invention is attached.

FIG. 2 is a horizontal sectional view of the main part.

FIG. 3 is an explanatory view showing a combined operation state in a first chamber and a second chamber of the damper chamber.

FIG. 4 is an explanatory diagram showing a combined operation state in a third chamber and a fourth chamber of the damper chamber.

FIG. 5 is an explanatory diagram showing a stove alone operation state in a first chamber and a second chamber of the damper chamber.

FIG. 6 is an explanatory diagram showing a stove alone operation state in a third chamber and a fourth chamber of the damper chamber.

FIG. 7 is an exploded perspective view of the damper chamber.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Burner part 13 Main heat exchanger 19 Bypass path 20 Damper room 23 Hot water heat exchanger 24 Hot water heat exchange room 25 Exhaust path 30 1st damper 35 2nd damper

Continued on the front page (72) Inventor Noboru Ogawa 7-7 Higashi Shinbo, Sanjo-shi, Niigata F-term in Corona Co., Ltd. 3L070 AA09 BB08 BB16 BB18 DD07 DE01 DG00

Claims (1)

[Claims] 1. A burner section that generates combustion gas by combustion, a main heat exchanger that circulates the combustion gas generated by the burner section, and generates heat for heating by radiation and convection from the surface, and the main heat exchanger. A hot water heat exchange chamber for receiving a hot water heat exchanger therein and exchanging heat with the combustion gas, and a hot water heat exchange with the main heat exchanger and the bypass. A damper chamber having a damper for communicating with the exhaust path and switching the passage is provided between the chamber and the chamber.
In the stove alone operation, the main heat exchanger and the exhaust path are communicated, and the communication on the bypass path side is cut off. In the hot water heating combined operation, the main heat exchanger side is cut off, and the bypass path and the hot water heat exchange chamber and the A stove with a built-in hot water heat exchanger, which connects the hot water heat exchange chamber and the exhaust path.