JP3694269B2 - Stove with 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 capable of performing a single operation of a stove by radiation and convection and a combined operation with warm water heating such as simple floor heating.
[0002]
[Prior art]
Conventionally, in this type, as disclosed in, for example, Japanese Patent No. 2952952, a stern tank is provided at a position lower than the hot water heat exchanger, and the hot water heat exchanger and the stern tank are provided. Since the leading end of the heat exchange outlet pipe to be connected is opened above the water surface of the stern tank, the circulating water in the hot water heat exchanger falls into the stern tank due to a drop when operating the stove alone. Since the water was stored and the inside of the hot water heat exchanger was emptied, it was safe to use without worrying about boiling due to the heat during the single operation of the stove.
[0003]
[Problems to be solved by the invention]
By the way, in this conventional one, the tip of the heat exchange outlet pipe opens above the water surface of the stern tank, so that when the stove and the hot water heating are used together, the hot water heat exchanger is connected to the stern tank. The hot water flowing into the water dropped and generated an awkward noise called battering, giving distrust to the user.
[0004]
[Means for Solving the Problems]
This invention pays attention to this point and solves the above-mentioned problems. In particular, the structure is connected to a burner section, a hot water heat exchanger heated by the burner section, and the hot water heat exchanger. A radiator tank, and a stern tank and a circulation pump connected between the hot water heat exchanger and the radiator, the stern tank being provided on the outgoing side of the hot water, and the hot water heat exchanger and the sister In the middle of the heat exchange outlet pipe connecting to the tank, a bulge portion extending at least from the space portion of the cistern tank is provided.
[0005]
As a result, during combined operation of the stove and hot water heating, the flow rate of the circulating hot water drops at the bulge part, and the outflow from the bulge part is delayed because the submerged end part is again a narrow tube part. The water level in the bulge part rises and the distance from the upper thin tube part that becomes the outflow part of the hot water is shortened, so that the falling sound is reduced, and the bulge part becomes a sound insulation wall and doubles with the cistern tank. It is possible to further prevent annoying noise.
[0006]
Further, in claim 2, a bypass hole is provided in the bulge portion in the stern tank above the water surface in the bulge portion, so that when the stove is used alone, the circulation pump is stopped and the bypass hole is passed through the bulge portion. Air flows into the hot water heat exchanger, and the hot water in the hot water heat exchanger falls at the head and is stored in the stern tank, so there is no need to worry about boiling and generating boiling noise. is there.
[0007]
Further, according to the third aspect of the present invention, the wall surface of the stan tank facing the bypass hole of the bulge portion is an inclined wall inclined toward the water surface. Although the circulating hot water is ejected from the hole, it does not fall directly on the water surface in the stern tank, but it can be prevented from flowing down along the inclined wall and generating a falling sound.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
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.
[0009]
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.
[0010]
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.
[0011]
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. Then, by convection, the room is heated as a stove.
[0012]
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.
[0013]
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.
[0014]
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. The second damper 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. Two of 35 constitute a damper.
[0015]
Reference numeral 36 denotes a driving means including an actuator that drives the first damper 30 and the second damper 35 at the same time. One driving lot 37 to which the first damper 30 and the second damper 35 are fixed, and the driving lot 37 and the driving unit 37 are driven. The means 36 is connected via a crank mechanism 38.
[0016]
A circulation pump 39 communicates with the hot water heat exchanger 23 via a cistern tank 40 for replenishing hot water and opened to the atmosphere. The hot water heated to a high temperature by the hot water heat exchanger 23 is supplied to a radiator 41 for floor heating. The low-temperature water that has been circulated and radiated is circulated again to the hot water heat exchanger 23 and reheated, and is circulated sequentially to perform both hot water heating and stove heating.
[0017]
A heat exchange outlet pipe 42 communicates the hot water heat exchanger 23 and the stern tank 40. A large-diameter bulge portion 43 is formed from the front passing through the stern tank 40, and about half of the height direction is formed. An upper thin tube portion 44 and a lower thin tube portion 45 are formed in the upper and lower portions by submerging in water, and the flow rate of the circulating hot water is dropped by the bulge portion 43, and the water surface higher than the water surface of the stern tank 40 is placed in the bulge portion 43. Is formed.
The size of the bulge portion 43 is 1.3 to 1.5 times the size of the narrow tube portion.
[0018]
Further, at a position higher than the water surface during normal operation of the bulge portion 43, one bypass hole 46 having a size that is not blocked by the surface tension of water is provided, and the space portion 47 and the bulge portion 43 above the stern tank 40 are provided. The wall of the stan tank 40 that communicates with the inside of the stern tank 40 and faces the bypass hole 46 is ejected from the bypass hole 46 as an inclined wall 48 that is inclined downward toward the specified water surface of the stern tank 40. The warm water is returned to the water surface without generating a falling sound.
[0019]
Next, the operation of the embodiment of the present invention will be described.
First, in the stove independent operation, as shown in FIGS. 5 and 6, the first opening 29 is blocked by the first damper 30 to close the inlet 27 side of the hot water heat exchange chamber 24, and the circulation and bypass passage of the second circulation pipe 22. The second damper 35 opens the second opening 34 and blocks the outlet 32 of the hot water heat exchange chamber 24, thereby allowing the first circulation pipe 21 to communicate with the exhaust passage 25.
[0020]
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 perform radiant heating, At the same time, convection heating is performed using a convection fan.
Thereafter, the combustion gas that has flowed into the branch chamber 7 flows through the main heat exchanger 13 from the first outlet 11 because the bypass 19 is blocked by the first damper 30, and the outside air and heat The room is heated by convection heating using the hot air and is discharged from the damper chamber 20 through the exhaust passage 25 to the outside.
[0021]
Next, in the combined operation of the stove and hot water heating such as floor heating, as shown in FIGS. 3 and 4, the first opening 29 is opened by the first damper 30 to open the inlet 27 of the hot water heat exchange chamber 24. 2 The communication pipe 22 and the bypass 19 are communicated with each other, the second damper 35 is opened at the outlet 32 of the hot water heat exchange chamber 24, and the second opening 34 is closed on the opposite side. The distribution on the one distribution pipe 21 side is blocked.
[0022]
If combustion of the burner unit 1 is started in this state or combustion is continued during combustion, 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 made by the reflector 6. Radiant heating is performed by reflection, and convection heating is also performed using a convection fan at the same time.
Thereafter, the combustion gas flowing into the branch chamber 7 enters the ventilation chamber 15 from the second outlet 12 because the main heat exchanger 13 side is blocked by the second damper 35, and from here through the first distribution pipe 21. And enters the damper chamber 20, flows through the hot water heat exchange chamber 24, and is discharged through the exhaust passage 25.
[0023]
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 inner hot water rises to become high temperature water. It is circulated to the radiator 41 for floor heating through the stern tank 40 by driving, and heating by floor heating is performed together with radiation heating and convection heating by the stove.
[0024]
Accordingly, in the combined operation, the combustion gas is not circulated through the main heat exchanger 13 but is circulated through the bypass passage 19 and is exchanged with the hot water heat exchanger 23. Therefore, the combustion gas is kept in a high temperature state without lowering the temperature of the combustion gas. Heat exchange is performed, 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.
[0025]
Also, during this hot water heating, the circulating hot water whose flow velocity has dropped in the bulge portion 43 in the stern tank 40 rises to the upper narrow tube portion 44 that is the inlet and falls toward the water surface approaching the lower thin tube portion 45. The water flows through the street tank 40 and the circulation pump 39 to the radiator 41, and this falling water does not make a loud sound of dripping because the flow velocity is low and the water surface is close. The double sound insulation between the bulge portion 43 and the cistern tank 40 can further prevent the generation of noise, and quiet and comfortable hot water heating can be obtained without worrying about the sound.
[0026]
Next, when the circulation pump 39 is stopped for the stand alone operation, the air flowing in from the bypass hole 46 is replaced with the hot water in the hot water heat exchanger 23 and flows down into the stern tank 40 by a drop. Since it is stored, the hot water heat exchanger 23 is emptied, and the problem that the remaining hot water in the hot water heat exchanger 23 boils even if the stove is operated alone is solved. It can be used with confidence.
[0027]
Further, when the piping resistance of the hot water heating is low and the circulation flow rate is increased, the water level of the bulge portion 43 further rises. At this time, the circulating hot water is ejected from the bypass hole 46 and a falling sound is generated to cause the noise. However, in the present invention, the wall surface of the stern tank 40 facing the bypass hole 46 is an inclined wall 48, so that the jetted hot water falls on the water surface through the inclined wall 48. The hot water heating can be continued without much concern and is extremely convenient.
[0028]
In this embodiment, the bulge portion 43 and the upper narrow tube portion 44 are configured by a single tube, but the present invention is not limited to this, and for example, it may be formed separately and connected. The bulge portion 43 may be provided in the stern tank 40, and the same effect can be obtained.
[0029]
【The invention's effect】
As described above, according to the present invention, at the time of combined operation of the stove and the hot water heating, the flow rate of the circulating hot water is lowered at the bulge portion, and the end portion during submergence is again a narrow tube portion, so that the bulge portion Due to the delay in the outflow from the water, the water level in the bulge rises and the distance from the upper thin tube that becomes the outflow of warm water is shortened, and the sound of falling water is reduced, and the bulge is a sound insulation wall. Double noise insulation with the cistern tank can further prevent annoying noise.
[0030]
According to the second aspect of the present invention, a bypass hole is provided in the bulge portion in the stern tank above the water surface in the bulge portion, so that the circulation pump is stopped when the stove is used alone, and the bulge portion from the bypass hole is provided. The air flows into the hot water heat exchanger via the hot water, and the hot water in the hot water heat exchanger falls at the head and is stored in the stern tank, so there is no concern of boiling and generating a boiling sound. It is a forest.
[0031]
Further, according to claim 3, when the wall surface of the stan tank facing the bypass hole of the bulge portion is an inclined wall inclined toward the water surface, when the pipe resistance is low during hot water heating and the circulation flow rate is increased, Although the circulating hot water is ejected from the bypass hole, it does not fall directly on the water surface in the stern tank, but it can be prevented from flowing down through the inclined wall and generating a falling sound.
[Brief description of the drawings]
FIG. 1 is a schematic sectional view of a stove with an embodiment of the present invention.
FIG. 2 is a horizontal sectional view of the same.
FIG. 3 is an explanatory view showing a combined operation state in the first chamber and the second chamber of the damper chamber.
FIG. 4 is an explanatory view 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 independent operation state in the first chamber and the second chamber of the damper chamber.
FIG. 6 is an explanatory diagram showing a stove independent 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 schematic configuration diagram of the main part.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Burner part 23 Hot water heat exchanger 39 Circulation pump 40 Cistern tank 41 Radiator 42 Heat exchange outlet pipe 43 Swelling part 46 Bypass hole 47 Space part 48 Inclined wall

Claims (3)

Burner unit, hot water heat exchanger heated by the burner unit, a radiator connected to the hot water heat exchanger, and a sister connected between the hot water heat exchanger and the radiator A tan tank and a circulation pump, and the stern tank is provided on the outgoing side of the hot water, and at least in the space of the stan tank in the middle of the heat exchange outlet pipe connecting the hot water heat exchanger and the stan tank. Stove with a built-in hot water heat exchanger characterized by providing a bulge that extends from the water to the water. The stove with a built-in hot water heat exchanger according to claim 1, wherein a bypass hole is provided in the bulge portion in the stern tank above the water surface in the bulge portion. The stove with a built-in hot water heat exchanger according to claim 2, wherein the wall surface of the stern tank facing the bypass hole of the bulge portion is an inclined wall inclined toward the water surface.

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