JP2003254625A - Stove incorporating hot water heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stove incorporating a hot water heat exchanger preventing generation of a water falling and splattering sound caused by the falling of circulating hot water onto a water surface of a cistern tank in driving hot water heating. <P>SOLUTION: This stove is provided with a burner part 1, the hot water heat exchanger 23 heated by the burner part 1, a radiator 41 connected to the hot water heat exchanger 23, and the cistern tank 40 and a circulation pump 39 connected between the hot water heat exchanger 23 and the radiator 41. The cistern tank 40 is provided in the outgoing side of the hot water and a falling water dispersion means 44 is provided in the tip of a heat exchanger outlet pipe 42 connecting between the hot water heat exchanger 23 and the cistern tank 40 so as to prevent the water falling sound and to provide the quiet and comfortable hot water heating with no possibility of the sound. <P>COPYRIGHT: (C)2003,JPO

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, which can perform an independent operation of the stove by radiation and convection and a combined operation of hot water heating such as simple floor heating.

[0002]

2. Description of the Related Art Heretofore, in this type, as disclosed in, for example, Japanese Patent No. 2952952, a cistern tank is provided at a position lower than the hot water heat exchanger, and the hot water heat exchanger is Since the tip of the heat exchange outlet pipe connecting to the sister tank is opened above the water surface of the sister tank, the circulating water in the hot water heat exchanger drops due to a drop during the operation of the stove alone. Water is dropped into the tank and stored, and the hot water heat exchanger becomes empty.
There was no fear of boiling due to the heat when operating independently, so it was safe to use.

[0003]

By the way, in this prior art, since the tip end of the heat exchange outlet pipe is opened above the water surface of the sister tank, it is possible to perform the combined operation of the stove and the hot water heating. However, the hot water flowing from the hot water heat exchanger to the sister tank falls, which causes annoying noise called fluttering, which makes the user uneasy.

[0004]

The present invention focuses on this point and solves the above-mentioned problems. In particular, the structure of the burner section includes a burner section and a hot water heat exchanger heated by the burner section.
A radiator connected to the hot water heat exchanger, a sister tank and a circulation pump connected between the hot water heat exchanger and the radiator are provided, and the sister tank is provided on the outgoing side of the hot water. A falling water dispersion means is provided between the tip of the heat exchanger outlet pipe connecting the hot water heat exchanger and the sister tank and the water surface in the sister tank.

As a result, during hot water heating operation, the circulating hot water that drops from the heat exchange outlet pipe to the surface of the tank is once dropped on the falling water dispersion means, where the flow velocity is decreased and innumerable and dispersed. Each one becomes a fine flow without momentum and falls onto the water surface of the sister tank, there is no big sound of falling water and there is no worry of noise, so it can be used with confidence.
Also, since the heat exchange outlet pipe is not submerged in water, if the hot water heating is stopped and the circulation pump is stopped, the hot water in the hot water heat exchanger will be stored in the sister tank by spontaneous fall, and it will be Boiling can be reliably prevented.

According to the present invention, the falling water dispersion means is composed of a mesh filter or a sponge filter and is detachably attached to the sister tank. The impurities such as dust can be removed, and the clogging of the pipe due to the accumulation of dust in the circulation circuit can be reliably prevented, so that the product can be used safely for a long period of time.

[0007]

BEST MODE FOR CARRYING OUT 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 which receives combustion air supplied from a combustion fan 2 and fuel supplied by a fuel supply means (not shown), and burns to generate combustion gas.

[0008] 3 is located on the burner unit 1, the burner unit 1
A combustion tube composed of a heat-resistant transparent body communicating with the above, and a cylindrical red heating element 4 is provided above the combustion tube to be heated by combustion gas to become red. Reference numeral 5 denotes a radiant chamber formed by surrounding the rear of the combustion cylinder 3 with a reflecting plate 6, which reflects the red heat state of the red heating element 4 into the room to perform radiant heating as a stove.

Reference numeral 7 denotes a branch chamber communicating with the combustion cylinder 3 via a communication port 8. The communication chamber 8 is covered with a guide plate 10 having an opening 9 on only one side, and long holes are formed at the left and right ends of the upper surface. The first and second outlets 11 and 12 are provided.

Reference numeral 13 denotes a main heat exchanger provided on the branch chamber 7, which includes 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 the first collecting portion 14
And a plurality of heat exchange pipes 18 that connect the second collecting portion 17 to each other. The combustion gas is circulated to heat the surrounding air by heat exchange, and the convection is performed to heat the room as a stove. It is something to do.

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

Reference numeral 20 denotes the second collecting portion 17 and the first distribution pipe 2.
1, a damper chamber communicating with the ventilation chamber 15 via the second circulation pipe 22, and a hot water heat exchanger 23 for heating the warm water passing therethrough by the flow of the combustion gas is housed below the opposite side. The hot water heat exchange chamber 24 communicates with the exhaust water passage 25, which projects downward to the outside.

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

Reference numeral 36 is a drive means composed of an actuator or the like for simultaneously driving the first damper 30 and the second damper 35. One drive lot 37 having the first damper 30 and the second damper 35 fixed thereto, and this drive lot 37 and the drive means 36 are connected via a crank mechanism 38.

Reference numeral 39 denotes a circulation pump which communicates with the hot water heat exchanger 23 through a cistern tank 40 for supplying hot water to the atmosphere, and radiates hot water heated to a high temperature by the hot water heat exchanger 23 for floor heating. The low-temperature water, which has been circulated in the vessel 41 and radiated, is circulated in the hot-water heat exchanger 23 again to be reheated, and sequentially circulated to perform both hot-water heating and stove heating in combination.

Reference numeral 42 is a heat exchange outlet pipe for connecting the hot water heat exchanger 23 and the sister tank 40 to each other.
0 is opened above the water surface 43, and between the heat exchange outlet pipe 42 and the water surface 43, a falling water dispersion means 44 composed of a 35-mesh mesh filter is provided.

The falling water dispersion means 44 is a heat exchange outlet pipe 42.
By receiving the falling water from the water once and dropping it to the lower water surface 43 through innumerable meshes and thin holes, the flow velocity is reduced and the water is dispersed innumerably and is dropped. The falling water dispersion means 44 can be easily removed from the sister tank 40, and the dust contained in the circulating warm water is removed in addition to the suppression of the falling water noise. It can be removed and discarded periodically, and it is clean without any impurities in the warm water, and there is no risk of clogging of the piping or the circulation pump 39 even after long-term use.

Next, the operation of the embodiment of the present invention will be described. First, in the independent operation of the stove, as shown in FIGS. 5 and 6, by blocking 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 bypass passages of the second circulation pipe 22 are closed. The second damper 35 opens the second opening 34 and shuts off the outlet 32 of the hot water heat exchange chamber 24 while the flow of 19 is stopped, thereby connecting the first flow pipe 21 to the exhaust passage 25.

When the burner section 1 is started to burn in this state, the generated combustion gas rises in the combustion cylinder 3 and the red heating element 4
Is made into a red heat state, this red heat state is reflected by the reflection plate 6 to perform radiant heating, and at the same time, convection heating is also performed using a convection fan. After that, since the bypass 19 is blocked by the first damper 30, the combustion gas that has flowed into the branch chamber 7 flows from the first outlet 11 into the main heat exchanger 13, and the combustion gas that has flowed into the outside air and heat. The interior is heated by convection heating with exchanged warm air, and the air is discharged from the damper chamber 20 to the outside through the exhaust passage 25.

Next, in the combined operation of the hot water heating such as the stove and the floor heating, as shown in FIGS. 3 and 4, by opening the first opening 29 by the first damper 30, the inlet 27 of the hot water heat exchange chamber 24 is opened. The second circulation pipe 22 and the bypass passage 19 are opened to communicate with each other, and the second damper 35 is connected to the hot water heat exchange chamber 24.
The outlet 32 is opened and the second opening 34 is closed on the opposite side to shut off the flow on the main heat exchanger 13 side and the first flow pipe 21 side.

In this state, the burner section 1 starts burning, or
If combustion is continued during combustion, the generated combustion gas rises in the combustion cylinder 3 to bring the red heating element 4 into a red heat state, and this red heat state is reflected by the reflection plate 6 to perform radiant heating, and at the same time, the convection fan. Convection heating is also performed using. After that, the combustion gas flowing into the branch chamber 7 is fed into the main heat exchanger 13
Since the side is blocked by the second damper 35, it enters the ventilation chamber 15 from the second outlet 12 and then enters the damper chamber 20 through the first distribution pipe 21 and the hot water heat exchange chamber 24.
It circulates inside and is discharged through the exhaust passage 25.

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 is increased to circulate as high temperature water. The pump 39 is driven to circulate through the sister tank 40 and a radiator 41 for floor heating, and radiant heating and convection heating by the stove as well as floor heating are performed.

Therefore, in the combined operation, the combustion gas does not flow through the main heat exchanger 13, but flows through the bypass 19 and exchanges heat with the hot water heat exchanger 23, so that the temperature of the combustion gas does not decrease and the temperature rises. In this state, heat is exchanged, floor heating is efficiently performed, and heating as a stove is also performed by the radiant heat of the red heating element 4 and the convection fan.

During this hot water heating, the sister tank 40
In the inside, the circulating hot water from the heat exchange outlet pipe 42 is the falling water dispersion means 4
4 and the flow velocity is reduced there, and innumerable fine flows are dropped on the water surface 43, and the tank 4
0, it circulates to the radiator 41 via the circulation pump 39, and this falling water has a low flow velocity and is dispersed and becomes an infinite number of fine flows, so that a large falling sound called fluttering noise is generated. Therefore, it is possible to obtain quiet and comfortable hot water heating without causing noise and without worrying about noise.

Next, the circulation pump 3 is used for the independent operation of the stove.
9 is stopped, the heat exchange outlet pipe 42 is in the open state in the cistern tank 40, so that the hot water in the hot water heat exchanger 23 is stored in the cistern tank 40 by flowing down with a drop. The inside of the heat exchanger 23 becomes empty, and the problem that the residual hot water in the hot water heat exchanger 23 boils even if the stove is operated alone is solved, and the stove alone operation can be used with confidence. is there.

Further, since the falling water dispersion means 44 is composed of a mesh and a myriad of fine holes, dust and impurities contained in the circulating hot water are automatically removed and gradually accumulated with the passage of time. Therefore, if the falling water dispersion means 44 is periodically removed from the sister tank 40 and the accumulated dust or the like is thrown away, the circulating hot water is always kept clean and the circulating circuit or the circulating hot water can be used for a long period of time. The circulation pump 39 does not become clogged with dust and can be used without anxiety.

In this embodiment, the falling water dispersion means 44 is composed of a 35-mesh mesh filter, but the invention is not limited to this, and a sponge filter having innumerable fine holes may be used. As long as it has holes corresponding to the mesh, the same effect can be obtained.

[0028]

As described above, according to the present invention, during hot water heating operation, the circulating hot water that drops from the heat exchange outlet pipe to the surface of the sister tank drops once on the falling water dispersion means, where the flow velocity drops. As it is dispersed innumerably, each one becomes a fine flow without momentum and falls on the surface of the tank, and there is no big sound of falling water and there is no worry of noise, so please rest assured. It can be used, and since the heat exchange outlet pipe is not submerged,
When the hot water heating is stopped and the circulation pump is stopped, the hot water in the hot water heat exchanger is stored in the sister tank by spontaneous fall, and it is possible to reliably prevent boiling during the independent operation of the stove.

In the second aspect, since the falling water dispersion means is composed of a mesh filter or a sponge filter and is detachably provided in the sister tank, it has an effect of suppressing the falling water sound and the circulating hot water. The impurities such as dust can be removed, and the clogging of the pipe due to the accumulation of dust in the circulation circuit can be reliably prevented, so that the product can be used safely for a long period of time.

[Brief description of 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 same.

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 view showing a combined operation state in a third chamber and a fourth chamber of the damper chamber.

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

FIG. 6 is an explanatory view showing a stove independent 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.

FIG. 8 is a schematic configuration diagram of the same tank portion.

FIG. 9 is a perspective view of the falling water dispersion unit.

[Explanation of symbols]

1 burner section 23 Hot water heat exchanger 39 Circulation pump 40 Sister tank 41 radiator 42 heat exchanger outlet pipe 44 Falling water dispersion means

Claims (2)

[Claims] 1. A burner section, a hot water heat exchanger heated by the burner section, a radiator connected to the hot water heat exchanger, and between the hot water heat exchanger and the radiator. A cistern tank and a circulation pump connected to the cistern tank, the cistern tank is provided on the upstream side of hot water, the heat exchanger outlet pipe tip connecting the hot water heat exchanger and the cistern tank, and the cistern tank A stove with a built-in hot water heat exchanger, which is equipped with a falling water dispersion means between the inside and the surface of water. 2. The stove with a built-in hot water heat exchanger according to claim 1, wherein the falling water dispersion means is composed of a mesh filter or a sponge filter, and is detachably provided in a cistern tank. .