JP2003004305A - Stove incorporated with hot water heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stove incorporated with a hot water heat exchanger, which makes no boiling sound under the condition that the heat exchanger has been heated up to a high temperature in an individual operation of the stove. SOLUTION: The stove is provided with a main heat exchanger 13 for allowing combustion gas to pass therethrough and for emitting heat from its surface for the stove by radiation and convection, and a hot water heat exchanging chamber 24 having the hot water heat exchanger 23 therein for exchanging heat with combustion gas. The chamber 24 is provided with passage change-over dampers 30, 35 which are, respectively, disposed at a first opening 29 of an entrance side and at an exit side 32. In an individual operation of the stove, the dampers 30, 35 shut down communication to both the entrance and exit of the chamber 24, respectively, to ensure prevention of boiling sound, and thus a user can use the stove feeling easy.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stove with a built-in hot water heat exchanger that can perform a stove alone operation by radiation and convection, and a combined operation with hot water heating such as simple floor heating. It is about. 2. Description of the Related Art Conventionally, in this type, as disclosed in Japanese Patent No. 2952952, for example, heat for heating is radiated and convected from the surface of a combustion tube through radiation and convection. A main heat exchanger that emits heat and a hot water heat exchanger that communicates with a branch port provided on the back side of the combustion tube and in the middle of the red hot body, and that the flow of combustion gas is either the main heat exchanger or the hot water heat exchanger. A switching damper for switching to the mode is provided at the outlet of the main heat exchanger and the hot water heat exchanger, and when the stove is operated alone, the hot water heat exchange chamber outlet is shut off by the damper to perform the heating operation. [0003] In the prior art, however, 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, causing the boiling water inside to generate a buzzing sound, or, in severe cases, has to be extinguished once and wait for cooling before combined operation can be started. Met. The present invention focuses on this point, and in order to solve the above-mentioned problems, in particular, the configuration of the present invention is a hot-water heat exchanger in which a hot-water heat exchanger is housed inside to exchange heat with combustion gas. An exchange chamber, and a damper for switching a passage on both the inlet side and the outlet side of the hot water heat exchange chamber. The damper is provided on both the inlet side and the outlet side of the hot water heat exchange chamber when the hot water heat exchanger is not used. Is provided so as to cut off the communication. [0005] In the stove alone operation, the second damper 35 of the damper chamber 20 shuts off the outlet side 32 of the hot water heat exchange chamber 24 and the first damper 30 is connected to the inlet of the hot water heat exchange chamber 24. Since the first opening 29 on the side is shut off, the combustion gas flows into the main heat exchanger 13 without communicating with the hot water heat exchanger 23, and heat is generated from the surface of the main heat exchanger 13 by radiation and convection. Then, the room is heated. Next, in the combined operation with the hot water heating, the first damper 30 of the tamper chamber 20 communicates the bypass path 19 and the hot water heat exchange chamber 24 in parallel in the middle of the exhaust path, and the second damper 35 makes the hot water heat exchange. By communicating the exchange chamber 24 and the exhaust path 25 in parallel, the combustion gas performs radiant and convective heating, and also exchanges heat with the hot water heat exchanger 23 in the hot water heat exchange chamber 24 to raise the temperature of the hot water and increase the floor temperature. Heating is also performed well. Accordingly, the hot water heat exchange chamber is reliably shut off at the inlet side and the outlet side by the first damper and the second damper, respectively, so that the hot water heat exchanger is not heated when the stove is operated alone, and the boiling sound is not generated. There is no defect at all. Next, a stove with a built-in hot water heat exchanger according to the present invention will be described with reference to an embodiment shown in the drawings. Reference numeral 1 denotes a pot type burner, 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. [0009] 3 is located on the burner section 1
The combustion cylinder is made of a heat-resistant transparent body communicating with the combustion chamber, and has a tubular red-hot body 4 hanging thereabove, which is heated by the combustion gas and glows 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 red heat of the red heat body 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. [0013] 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 collecting portion 17 and the surrounding air is heated by heat exchange by circulating the combustion gas and convection, thereby heating the room as a stove. Is what you 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 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 housed 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 communicating with the second circulation 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. The first opening 29 constitutes the inlet side of the hot water heat exchange chamber 24 and indirectly opens and closes the inlet 27. The first opening 29 is located below the third chamber 31 communicating with the first circulation pipe 21 and has a hot water heat A second opening 34 connecting the third chamber 31 and the fourth chamber 33 and an outlet side 32 of the hot water heat exchange chamber 24 are connected to the outlet 32 of the exchange chamber 24 and the fourth chamber 33 having the exhaust passage 25. A second damper 35 that opens and closes alternately is provided.
The two dampers 30, 35 constitute a damper device. 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 driving 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, the first opening 29 constituting the inlet side of the hot water heat exchange chamber 24 is blocked by the first damper 30, so that the hot water heat exchange chamber 2 is closed.
4 is closed indirectly to stop the flow of the second flow pipe 22 and the flow of the bypass passage 19, and the second damper 35 opens the second opening 34 to shut off the outlet side 32 of the hot water heat exchange chamber 24. By doing so, the first distribution pipe 21 is communicated with the exhaust path 25. If the burner unit 1 is started to burn in this state, the generated combustion gas rises in the combustion tube 3 and
In a red heat state, and the red heat state is reflected by the reflection plate 6 to perform radiant heating and convection heating using a convection fan (not shown). Thereafter, the combustion gas flowing into the branch chamber 7 is
Since the bypass 19 is blocked by the first damper 30, the bypass 19 flows through the main heat exchanger 13 from the first outlet 11,
Heat is exchanged with the outside air, and the room is heated by convection of warm air using a convection fan.
5 is discharged. Next, in the combined operation of hot water heating such as a stove and floor heating, the first opening 29 is opened by the first damper 30 to open the inlet 27 of the hot water heat exchange chamber 24 as shown in FIGS. It is opened and communicates with the second flow pipe 22, and the second damper 35 opens the outlet 32 of the hot water heat exchange chamber 24 and communicates with the exhaust port 25. At this time, if 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, the temperature of the inner hot water rises to become high-temperature water. It is circulated to a radiator or the like for floor heating by the drive of the circulation pump 39, and performs radiant heating and convection heating by a stove, as well as heating by floor heating. In this embodiment, the main heat exchanger 13 is cut off from the exhaust path during the operation with the hot water heating, but if the hot water heat exchanger 23 is connected in parallel in the middle of the exhaust path, The main heat exchanger 13 does not need to be shut off from the exhaust path. As described above, according to the present invention, the inlet and outlet of the hot water heat exchange chamber are completely shut off during the operation of the stove alone, so that the hot water heat exchanger is free from combustion gas and hot air. Without being exposed or touching, there is no generation of hot water boiling sound, hot water boiling instantly at the start of hot water heating operation, hot water heating is not started, it is necessary to extinguish fire once and cool down, It is extremely easy to use and can be used with confidence.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of a stove to which one embodiment of the present invention is attached. FIG. 2 is a horizontal sectional view of the main part. FIG. 3 is an explanatory diagram 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 [Description of symbols] 13 Main heat exchanger 20 Damper chamber 23 Hot water heat exchanger 24 Hot water heat exchange chamber 27 Inlet 29 First opening 30 First damper 32 Exit side 35 Second Damper

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Masaaki Sekiya             7-7 Higashi Shinbo, Sanjo City, Niigata Prefecture             Inside Rona

Claims (1)

Claims: 1. A hot water heat exchange chamber containing a hot water heat exchanger therein for exchanging heat with combustion gas, and a passage switching passage on both the inlet side and the outlet side of the hot water heat exchange chamber. A stove with a built-in hot water heat exchanger, wherein the damper is provided so as to shut off communication between both the inlet side and the outlet side of the hot water heat exchanger when the hot water heat exchanger is not used.