JP2574831Y2 - Combustion machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustor, and more particularly to a structure of a burner air supply path.

[0002]

2. Description of the Related Art FIG. 2 shows a configuration of a combustor containing two forced-supply / exhaust type combustors for taking in combustion air from outside and discharging combustion waste gas to the outside. As shown in the figure, two sets of a burner 3 having an upper combustion chamber 2 inside a main body 1 and a blower 4 for sending air to the burner 3 are provided. A supply / exhaust tube 9 for exhausting combustion waste gas is provided. Body 1
At the upper part of the inside, an air supply chamber 6 formed by attaching an oblong lid-shaped partition wall upward to the lower surface of the top plate, and an oval lid-shaped partition wall smaller than the air supply chamber 6 is formed as an air supply chamber 6. A flue 7 is formed by being attached downward toward the bottom surface, and an exhaust pipe 10 is erected on the central upper surface of the flue 7 to communicate with the outside. The air supply / exhaust tube 9 is formed by erected from the air supply / exhaust tube 11. On the other hand, a flue pipe 8 is erected at the upper part of the combustion chamber 2 and connected to the flue 7, a blower 4 is arranged at the bottom of the main body 1, and an outlet side is connected to a lower part of the burner 3 by a blower pipe 5. The inlet side is connected to the air supply chamber 6 by the air supply pipe 9. The combustion device thus configured includes a fuel tank (not shown),
Alternatively, liquid or gaseous fuel is supplied to the burner 3 from the pipe, and combustion air is taken in from the air supply cylinder 11 by the blower 4 and supplied through the air supply chamber 6, the air supply pipe 9, and the air supply pipe 5, and is supplied to the combustion chamber 2. The combustion waste gas is discharged outside through a flue pipe 8, a flue 7 and an exhaust stack 10. However, when only one of the two sets of combustors is operated, for example, only the right side, the air supply chamber 6 is depressurized and the flue 7 is pressurized by the operation of the blower 4 and the draft caused by the combustion. Therefore, the right combustion waste gas flows back to the air supply side via the left flue pipe 8, the combustion chamber 2, the blower 4, and the air supply pipe 5, causing poor combustion and the left combustion chamber 2 There is a drawback that it pollutes and corrodes.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide a combustor which does not affect each other during one-side operation.

[0004]

In order to solve the above-mentioned problems, in the present invention, two sets of a burner having an upper combustion chamber and a blower for sending air to the burner are provided in the main body, and the burner is supplied to the upper part of the main body. In a combustor in which an exhaust pipe is provided to supply combustion air and exhaust combustion waste gas, a connection pipe is connected between the outlet sides of the blowers with a connection pipe, and a control valve is inserted into the connection pipe, and only one of the burners is used. The control valve is opened when is operated.

[0005]

When the control valve is opened, the pressures in the left and right ventilation pipes or the combustion chambers become substantially the same, and the backflow of the combustion waste gas is prevented.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example in which the present invention is applied to a hot water heater will be described.
A description will be given based on FIG. FIG. 1 is a configuration diagram of a hot water heater. As shown in FIG. 1, two sets of a burner 3 having an upper combustion chamber 2 and a blower 4 for sending air to the burner 3 are housed in a main body 1.
A supply / exhaust tube 9 for supplying the combustion air to the burner 3 and exhausting the combustion waste gas is provided at the upper part of the main body 1. An upper part of the main body 1 is provided with an air supply chamber 6 formed by attaching an oblong lid-like partition wall upward to the lower surface of the top plate, and an oval lid-like partition wall smaller than the air supply chamber 6 with the air supply chamber. A flue 7 is formed by being attached downward to the bottom surface of the flue 6, and an exhaust pipe 10 is erected on the central upper surface of the flue 7 to communicate with the outside. The air supply cylinder 11 is provided upright to form the air supply / exhaust cylinder 9. On the other hand, a flue pipe 8 is erected at the upper part of the combustion chamber 2 and connected to the flue 7, a blower 4 is arranged at the bottom of the main body 1, and an outlet side is connected to a lower part of the burner 3 by a blower pipe 5. ,
The inlet side is connected to the air supply chamber 6 by the air supply pipe 9. A connecting pipe 12, which is a feature of the present invention, connects the blower pipes 5 on the outlet side of the blower 4, and a control valve 13, which is opened only during one-side operation, is inserted into the connecting pipe. A heat exchanger 14 is provided in the combustion chamber 2, one end of which serves as an inlet end 17 of hot water facing the outside of the main body 1, and the other end of which opens at an upper part of a cistern 15 for storing heated hot water. I have. The lower part of the cistern 15 is connected to the suction side of the circulation pump 16, and the discharge side of the pump 16 faces the outside of the main body 1 and becomes an outlet end 18 of hot water, and from an inlet end 17, the heat exchanger 14, the cistern 15 and the circulation pump 16, an outlet end 18, and a closed conduit connected to the inlet end 17 via a load (not shown).

Therefore, for example, when only the right side is operated, the right burner 3, the blower 4 and the circulation pump 16 operate, and the hot water which has been heated by the heat exchange in the heat exchanger 14 is heated by the circulation pump 16. The cistern 15 circulates back to the heat exchanger 14 via a load (not shown) to heat the space in which the load is disposed, and combustion air is taken in from the air supply cylinder 11 by the blower 4 and supplied to the air supply chamber 6. The gas is supplied to the burner 3 through the air supply pipe 9 and the air blow pipe 5 and burns in the combustion chamber 2, and the combustion waste gas is discharged outside through the flue pipe 8, the flue 7 and the exhaust stack 10. At this time, the flue gas 7 is pressurized by the operation of the blower 4 and the air supply chamber 6 is depressurized, and the combustion waste gas tends to flow back into the left combustion chamber 2, but the control valve 13 is opened. Therefore, the blower tube 5 on the outlet side of the blower 4
The pressure in the combustion chamber 2 or the flue tube 8 becomes substantially the same on the left and right, and this backflow is prevented.

According to the above embodiment, the connecting pipe 12 connects between the blowers 5, but may be connected to the casing forming the blower 4 on the outlet side of the blower 4. The same effect can be obtained by connecting to a space. or,
Although the present invention has been described using an example in which the present invention is applied to a hot water heater, a hot air heater having a large thermal power adjustment range can be provided by providing a blower on the back of the main body 1 and a grill on the front.

[0009]

[Effect of the Invention] The outlet side of the blower is connected by the connecting pipe 12,
Since a control valve that is opened only during one-side operation is inserted into this, the effect of preventing poor combustion, pollution, corrosion, etc., which occurs when two combustors sharing a supply / exhaust path interact with each other. Can play.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a hot water heater implementing a combustor according to the present invention.

FIG. 2 is a configuration diagram of a combustor according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Combustion chamber 3 Burner 4 Blower 5 Blower tube 6 Air supply chamber 7 Flue 9 Supply / exhaust tube 10 Exhaust tube 11 Supply cylinder 12 Connecting pipe 13 Control valve 14 Heat exchanger 15 Systan 16 Circulation pump

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F23C 6/02 F23L 17/00 F23L 17/02 F23L 17/04 F24D 3/00 F24H 1/44

Claims (2)

(57) [Scope of request for utility model registration] 1. A burner having an upper combustion chamber and a blower for sending air to the burner are installed in the main body, and a supply / exhaust tube for the burner is provided at an upper portion of the main body to supply air for combustion air and exhaust gas for combustion waste gas. In a combustor that performs exhaust, a control valve is inserted into the connection pipe while connecting the outlet side of the blower with a connection pipe,
A combustion machine characterized in that the control valve is opened when only one burner operates. 2. The combustion according to claim 1, wherein two sets of a heat exchanger, a cistern for storing heated hot water, and a circulation pump are housed in the main body of the combustion chamber to supply hot water. Machine.