JP4021632B2 - Stove with a built-in hot water heat exchanger - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stove with a built-in hot water heat exchanger that can be operated alone with radiation and hot air and can be used in combination with hot water heating such as simple floor heating.
[0002]
[Prior art]
Conventionally, in this type, as disclosed in, for example, Japanese Patent No. 2952952, a main heat exchanger that communicates with the combustion cylinder and emits heat for heating by radiation and hot air from its surface; A hot water heat exchanger connected to a branch port provided on the back side of the combustion tube and behind the red hot body is provided, and a switching damper for switching the flow of combustion gas to the main heat exchanger or the hot water heat exchanger is used as the main heat. In preparation for the junction of the exchanger and hot water heat exchanger outlet, heating operation is performed by closing the hot water heat exchanger outlet with the damper when the stove operates alone.
[0003]
[Problems to be solved by the invention]
By the way, in this conventional one, since the switching damper exists only at the outlet side of the hot water heat exchange chamber and the inlet side is open, the hot water heat exchanger is heated to a high temperature even when the stove is operated alone. If the hot water is boiling, or if it is severe, it must be digested once and wait for cooling before the combined operation can be started. When there is an attempt to block this simultaneously with a single drive rod, there is a problem that a gap is inevitably generated in one damper due to variation in assembly, etc., and both cannot be completely brought into close contact with each other It is.
[0004]
[Means for Solving the Problems]
This invention pays attention to this point and solves the above-mentioned problems. In particular, the configuration is such that a burner part that generates combustion gas by combustion and a combustion gas generated in the burner part are circulated and heated from the surface by radiation and convection. A main heat exchanger that generates heat for use, a bypass passage that bypasses the main heat exchanger and distributes the combustion gas, a hot water heat exchange chamber that houses the hot water heat exchanger and exchanges heat with the combustion gas. Between the main heat exchanger and the bypass passage and the hot water heat exchange chamber, and has a damper for passage switching communicating with the exhaust passage, and the main heat exchanger via the first distribution pipe, In addition, the bypass path includes a damper chamber that communicates with each other via a second distribution pipe, and includes a first damper and a second damper that simultaneously block both the inlet side and the outlet side of the hot water heat exchange chamber, This first and second damper is one Mounted on the drive rod de, either one of the first damper and the second damper with initiates faster pressed closed than others, this comprises a spring means for absorbing a pressing state faster towards waits for sealing the slower It is what I did .
[0005]
DETAILED DESCRIPTION OF THE INVENTION
In the stove single operation, the second damper 39 of the damper chamber 20 closes the outlet side 32 of the hot water heat exchange chamber 24, and the first damper 30 closes the first opening 29 that is the inlet side of the hot water heat exchange chamber 24. Therefore, the combustion gas flows into the main heat exchanger 13 without communicating with the hot water heat exchanger 23, and heat from the radiant heat from the surface of the main heat exchanger 13 and the air blown from the convection fan (not shown). Indoor heating is performed as warm air by exchange.
[0006]
At this time, when the drive rod 43 is driven, the closing of the outlet side 32 by the second damper 39 is started first, and then the first opening 29 is closed by the first damper 30 with a slight delay. Although the rod 43 is driven and the second damper 39 is pushed in, this pressure state is absorbed by the spring means 41, and the first damper 30 can seal the first opening 29 during this time. The first and second dampers 30 and 39 can be afforded, the outlet side 32 and the first opening 29 can be reliably sealed, good heat insulation can be performed, and it can be used with peace of mind.
[0007]
【Example】
Next, a stove with a built-in hot water heat exchanger according to the present invention will be described based on an embodiment shown in the drawings.
Reference numeral 1 denotes a pot-type burner unit that receives combustion air supply from a combustion fan 2 and fuel supply from a fuel supply means (not shown) and burns to generate combustion gas.
[0008]
Reference numeral 3 denotes a combustion cylinder made of a heat-resistant transparent body that is located on the burner section 1 and communicates with the burner section 1. A cylindrical red heat body 4 is suspended from above and is heated by the combustion gas to be red hot.
Reference numeral 5 denotes a radiation chamber formed by enclosing the back of the combustion cylinder 3 with a reflection plate 6, which reflects the red heat state of the red heat body 4 into the room and performs radiation heating as a stove.
[0009]
A branch chamber 7 communicates with the combustion cylinder 3 via the communication port 8. The communication port 8 is covered with a guide plate 10 having an opening 9 only on one side, and first and second elongated holes are respectively formed on the left and right ends of the upper surface. Second outlets 11 and 12 are provided.
[0010]
Reference numeral 13 denotes a main heat exchanger provided on the branch chamber 7. The first collecting portion 14 that communicates with the first outlet 11 and the vent chamber 15 that communicates with the second outlet 12 are partitioned by a partition plate 16. It is composed of the formed second collecting portion 17 and a plurality of heat exchange pipes 18 connecting the first collecting portion 14 and the second collecting portion 17, and the surrounding air is heated by heat exchange by circulating the combustion gas. The room is heated as a stove by discharging it as warm air with a convection fan.
[0011]
The second outlet 12 and the ventilation chamber 15 form a bypass 19 that bypasses the combustion gas without passing through the main heat exchanger 13.
[0012]
A damper chamber 20 communicates with the second collecting portion 17 via the first circulation pipe 21 and communicates with the ventilation chamber 15 via the second circulation pipe 22. A hot water heat exchange chamber 24 that houses a hot water heat exchanger 23 that heats the hot water passing therethrough communicates, and an exhaust passage 25 that protrudes outdoors communicates with the hot water heat exchanger 23.
[0013]
The damper chamber 20 is divided into four chambers, and a first opening linking a first chamber 26 communicating with the second distribution pipe 22 and a second chamber 28 having an inlet 27 of the hot water heat exchange chamber 24 below. The fourth damper 33 is provided with a first damper 30 that opens and closes 29, and below the third chamber 31 that communicates with the first flow pipe 21. The fourth chamber 33 includes the outlet 32 of the hot water heat exchange chamber 24 and the exhaust passage 25. Damper means 35 for alternately opening and closing the second opening 34 connecting the third chamber 31 and the fourth chamber 33 and the outlet 32 of the hot water heat exchange chamber 24 is provided.
[0014]
The damper means 35 is attached to both sides of a square-shaped substrate 36 with closing plates 37 and 38 in a state where only the central portion is fixed and the outer periphery is floated, and one of them closes the outlet side 32 of the hot water heat exchange chamber 24. The second damper 39 is configured as the third damper 40 that closes the second opening 34, and the closing plate 37 is disposed between the substrate 36 and the closing plate 37 of the second damper 39 on the outlet side. Spring means 41 is provided that generates a repulsive force when pressed against 32.
[0015]
Reference numeral 42 denotes a driving means comprising an actuator or the like for simultaneously driving the first damper 30 and the damper means 35, and the first damper 30 and the damper means 35 are fixed with the second damper 39 spread several degrees by shifting the angle by 90 °. The single drive rod 43 and the drive rod 43 and the drive means 42 are connected via a crank mechanism 44.
[0016]
A circulation pump 45 communicates with the hot water heat exchanger 23 via a cistern tank 46 for supplying hot water, and circulates hot water heated to a high temperature by the hot water heat exchanger 23 to a radiator (not shown) for floor heating. Then, the low-temperature water after the heat radiation is circulated again to the hot water heat exchanger 23 and reheated, and is circulated sequentially to perform the hot water heating in combination with the heating by the stove.
[0017]
Next, the operation of the embodiment of the present invention will be described.
First, in the stove single operation, as shown in FIGS. 3 and 4, in the stove single operation, the second damper 39 of the damper chamber 20 closes the outlet side 32 of the hot water heat exchange chamber 24 and the first damper 30 is the hot water heat exchange chamber. Since the first opening 29 which is the inlet side of 24 is closed, the combustion gas flows into the main heat exchanger 13 without communicating with the hot water heat exchanger 23, and the radiant heat from the surface of the main heat exchanger 13 and Indoor heating is performed as warm air by heat exchange with the air flow from the convection fan.
[0018]
At this time, when the drive rod 43 is driven, the second damper 39 starts to close the outlet side 32 first, and then the first damper 30 starts to close the first opening 29 with a slight delay. Although the rod 43 is driven and the second damper 39 is pushed in, this pressure state is absorbed by the spring means 41, and the first damper 30 can seal the first opening 29 during this time. The first and second dampers 30 and 39 have a margin, and the outlet side 32 and the first opening 29 can be reliably sealed.
[0019]
If combustion of the burner unit 1 is started in this state, the generated combustion gas rises in the combustion cylinder 3 to make the red hot body 4 in a red hot state, and this red hot state is reflected by the reflector 6 to radiate heating and convection. Hot air heating is also performed using a fan.
[0020]
Thereafter, the combustion gas flowing into the branch chamber 7 circulates in the main heat exchanger 13 from the first outlet 11 because the bypass passage 19 is closed by the first damper 30, and the outside air and heat The room is heated by convection of warm air using a convection fan that is exchanged, and is discharged from the damper chamber 20 through the exhaust passage 25.
[0021]
Next, in the combined operation of the stove and hot water heating such as floor heating, the first damper 30 opens the first opening 29 to open the inlet 27 of the hot water heat exchange chamber 24 as shown in FIGS. 2 The communication pipe 22 is communicated, and the second damper 39 opens the outlet side 32 of the hot water heat exchange chamber 24 to communicate the exhaust port 25.
[0022]
At this time, if the hot water heat exchanger 23 exchanges heat with the combustion gas flowing between the inlet 27 and the outlet side 32 of the hot water heat exchange chamber 24, the temperature of the inner hot water rises to become high temperature water and becomes a circulating pump. It is circulated to a radiator or the like for floor heating by driving 39, and heating by floor heating is performed together with radiation heating and hot air heating by a stove.
[0023]
In this embodiment, the main heat exchanger 13 is shut off from the exhaust path during the hot water heating operation. However, if the hot water heat exchanger 23 is connected in parallel in the middle of the exhaust path, the main heat exchanger 13 is disconnected. The vessel 13 need not be shut off from the exhaust path.
[0024]
【The invention's effect】
As described above, according to the present invention, the hot water heat exchanger is not exposed to or in contact with the combustion gas or hot air by completely shutting off the inlet side and the outlet side of the hot water heat exchange chamber during single operation of the stove. There is no occurrence of warm water boiling noise, hot water boils instantaneously at the start of hot water heating operation, and hot water heating does not start, so there is no need to extinguish and cool down. It can be used with heart.
Furthermore, even if the first and second dampers are driven and controlled by a single drive rod, the closed portions of the first and second dampers are reliably sealed to prevent convection of the combustion gas and provide good heat insulation. It can be done.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of a stove with an embodiment of the present invention.
FIG. 2 is a horizontal sectional view of the main part.
FIG. 3 is an explanatory diagram showing a stove independent operation state in the first chamber and the second chamber of the damper chamber.
FIG. 4 is an explanatory diagram showing a stove independent operation state in the third chamber and the fourth chamber of the damper chamber.
FIG. 5 is an explanatory view showing a combined operation state in the first chamber and the second chamber of the damper chamber.
FIG. 6 is an explanatory view showing a combined operation state in the third chamber and the fourth chamber of the damper chamber.
FIG. 7 is an exploded perspective view of the damper chamber. FIG. 8 is a front view of the damper chamber.
FIG. 9 is a sectional view of the damper means.
FIG. 10 is a front view of the spring means.
[Explanation of symbols]
1 burner unit 13 main heat exchanger 19 bypass passage 20 damper chamber 23 hot water heat exchanger 24 hot water heat exchange chamber 27 inlet 29 first opening 30 first damper 32 outlet 39 second damper 41 spring means 43 drive rod de

Claims (1)

A burner section that generates combustion gas by combustion, a main heat exchanger that circulates the combustion gas generated in the burner section and generates heat for heating by radiation and convection from the surface, and bypasses the main heat exchanger A bypass passage through which the combustion gas is circulated; and a hot water heat exchanger chamber in which a hot water heat exchanger is housed and heat exchanged with the combustion gas is provided, between the main heat exchanger and the bypass passage and the hot water heat exchange chamber. Has a damper for communicating with the exhaust passage and switching the passage, and includes a damper chamber that communicates with the main heat exchanger via the first distribution pipe and with the bypass passage via the second distribution pipe, respectively. and a first damper and a second damper which simultaneously closes the communication of both the inlet side and the outlet side of the hot water heat exchanger chamber, the first, second damper is attached to one of the drive rod, said first Damper or second damper One of the causes is started faster pressed closed than the other or, provided with a spring means for absorbing the pressing state to the faster, slower hot water heat exchanger built stoves, characterized in that the to wait a seal.

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