JP3137472B2 - Combustion equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus for burning petroleum, particularly for use in a home cooking apparatus.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, a burner head 3 having a large number of flame ports 2 is mounted on a vaporizer 1 and a vaporizer is provided on a side wall of the vaporizer 1 as shown in FIG. The front end of the fuel supply pipe 5 is provided so as to face the carburetor 1 via the air passage 4, and the other end of the fuel supply pipe 5 is connected to the fuel pump 6. On the other hand, the vaporizing air passage 4 is communicated with a blowing means 7, and the blowing means 7 is also communicated with a combustion air passage 8 provided around the burner head 3. These carburetor 1, fuel pump 6, blowing means 7, etc.
The upper part of the case 9 is opened, and the burner head 3 is exposed upward. After the carburetor 1 is heated by an electric heater or the like, the carburetor 1 is heated by an electric heater or the like. When air is sent to the use air passage 8, fuel is supplied by the fuel supply pipe 5, is vaporized in the carburetor 1, becomes an air-fuel mixture, is ejected from the flame opening 2, and is ignited by the air-fuel mixture. A flame 11 was formed around the burner head 3.

[0003]

However, in the above-described conventional configuration, the bottom of a pot or the like placed on the sword 10 is directly heated by the flame 11, so that there are many flames 11 escaping along the periphery of the pot or the like. There was a problem that the heat was radiated into the air and the efficiency was poor. In addition, the upper part of the case 9 receives the radiation of the flame 11 and the temperature rises, which causes a problem of inconvenience of the cooking operation and a dangerous state such as burns.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a combustion apparatus capable of improving efficiency, improving cooking workability, and ensuring safety.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a combustion section, a combustion chamber, a combustion gas passage, and a heat receiving section provided in a combustion gas passage, each of which is provided in communication with an exterior body. A top plate provided with an end portion opened toward the outside of the exterior body top plate, a cooling passage provided to surround the combustion gas passage below the exterior body top plate, and cooling. An outside air passage provided around the combustion chamber, a blowing means for supplying combustion air to the combustion portion, and a supply side of the blowing means, and connected to the outside air passage to supply air. It is composed of an air passage and an air inlet provided in a part of the cooling passage.

[0006]

In the above configuration, heat is transmitted by conduction and radiation from the top plate heated by the combustion gas, and the rate of heat escaping into the air is small, so that the thermal efficiency can be improved. In addition, air for combustion is supplied from the cooling passage provided at the lower part of the outer body top plate, the outer body top plate around the top plate is cooled, and an object is placed on the outer body top plate during cooking work. However, even if it is not overheated, workability can be improved, and burns during work can be prevented, and safety can be ensured. Further, combustion air is supplied from the air supply side of the blower through the cooling passage and the outer air passage, and the combustion reaction is accelerated by the combustion air absorbing heat escaping from the combustion chamber and the outer wall of the combustion gas passage, so that the exterior body is The heat dissipated in the air is also recirculated, and the thermal efficiency can be improved.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 12 denotes a combustion unit that atomizes or vaporizes liquid fuel and mixes it with combustion air to perform diffusion combustion or premix combustion. The combustion unit 12 is disposed so as to eject and burn atomized particles or vaporized gas in the lateral direction, and has a bottomed cylinder whose inner wall is covered with a heat insulating material (not shown) such as glass wool or ceramic on the downstream side. A combustion chamber 13 is provided in a vertical direction. This combustion chamber 1
At the upper part of 3, a combustion gas passage 14 is developed toward the periphery of the combustion chamber 13. A cylindrical combustion gas outlet 15 communicates with the downstream side of the combustion gas passage 14, and a tip portion of the combustion gas outlet 15 is provided with an exterior provided to cover the combustion section 12, the combustion chamber 13, and the combustion gas passage 14. It is provided so as to penetrate a part of the body 16. At the substantially center of the combustion gas passage 14 at the upper part of the combustion chamber 13, a plurality of plate-shaped heat receiving portions 1 are provided.
7 is a radially extending combustion gas passage 1 from the center to the circumferential direction.
A flat top plate 18 that is inserted into the vicinity of the lower portion of the heat sink 4 and that is assembled as an integral structure is provided above the heat receiving portion 17. The heat receiving portion 17 and the top plate 18 are made of a heat-resistant material having good heat conductivity such as a metal. Top plate 18
Is mounted on the upper portion of the combustion gas passage 14 and is mounted via a packing, a sealing material, or the like (not shown) so as not to leak the combustion gas. Further, the upper end of the top plate 18 is opened by penetrating the upper portion of the exterior body top plate 19 constituting the upper portion of the exterior body 16. A combustion gas passage 14 and a combustion gas outlet 15 are provided below the exterior body top plate 19 along the exterior body top plate 19.
A cooling passage 20 is provided so as to cover the periphery of the space. The lower portion of the cooling passage 20 communicates with an outer air passage 21 having a space configured to cover a part of the combustion section 12 and the entire periphery of the combustion chamber 13. Reference numeral 22 in the drawing denotes a plurality of ventilation holes provided on the side wall of the exterior body 16.

[0008] On the other hand, a blowing means 23 comprising a blower is connected to the combustion section 12. An outer air passage 21 communicates with an air supply side of the air blowing means 23 via an air supply passage 24 from a side wall thereof. At a lower portion of the cooling passage 20, a plurality of air inlets 25 opened in the exterior body 16 are provided. Further, a fuel supply means 26 including a combustion pump is connected to the combustion section 12 via a combustion pipe 27. The fuel supply means 26 is provided on a sub-tank 28, which is in communication with a leveler 29, and which is in communication with a fuel tank (not shown) outside the exterior body 16 via an oil feed pipe 30. I have. The blowing means 23, the fuel supply means 26, and control components (not shown) are installed in the exterior body 16. In the figure, 31 is a flame, 32 is a combustion gas flow, and 33 is a combustion air flow.

In the above configuration, the air blowing means 23 is operated, and the combustion air passes through the ventilation port 22, passes from the air inlet 25 through the cooling passage 20 and the outer air passage 21, and passes through the air supply passage 2.
After being sent to the air supply side of the blowing means 23 via the air supply 4 and supplied into the combustion section 12, fuel is supplied to the combustion section 12 by the fuel supply means 26, and ignition is performed by an ignition device (not shown). , A flame 31 is formed in the combustion part 12. The combustion gas flow 32 of the flame 31 rises in the combustion chamber 13 and the combustion gas passage 1
4 and discharged from the combustion gas outlet 15. At this time, the combustion gas flow 32 heats the heat receiving portion 17 while passing through the combustion gas passage 14, and the heat is received by the top plate 18 and becomes high temperature, so that cooking can be performed by placing a pot or the like on this. . The top plate 18 serves as a heating element, and when a pot or frying pan matching the shape of the upper end surface is placed, heat is efficiently transmitted,
Since the heat does not dissipate or escape into the surrounding air as in the case of direct fire, the ineffective rate is improved, fuel efficiency is improved, and an economical cooking device can be supplied.

[0010] Further, since the combustion air flow 33 having a low temperature flows first from the cooling passage 20 provided at the lower portion of the exterior top plate 19, the exterior top plate 19 around the top plate 18 is cooled and cooked. Even if a material for cooking is placed on the exterior body top plate 19 during the work of, the workability can be improved without being overheated,
In addition, there is an effect that even if the outer body top plate 19 is touched during the work, no burns or the like are caused and safety can be secured.

Further, while the combustion air is passed through the cooling passage 20 and the outer air passage 21, the heat radiated from the outer walls of the combustion chamber 13 and the combustion gas passage 14 into the exterior body 16 is recovered and is transferred to the combustion section 12. Since the air is sent, the temperature of the combustion air is raised to promote the combustion reaction, so that the combustion efficiency is improved and the heat balance of the entire apparatus can be improved by reusing heat.

Further, since the flat top plate 18 is only exposed to the outside of the exterior body 16, there is an effect that cleaning after cooking becomes easy. Further, since the combustion part 12 is not opened to the outside, dirt such as boiling over during cooking does not enter into the inside, and there is an effect that a good state can be maintained for a long time.

Further, since the flame 31 is not exposed outside the exterior body 16, there is an effect that a safe cooking apparatus can be provided without burning.

[0014]

As is clear from the above description of the embodiment, according to the combustion apparatus of the present invention, the following effects can be obtained. (1) Since a top plate is provided in the middle of the combustion gas passage via a heat receiving unit, sufficient heat is transmitted to a pan and the like placed on the top plate,
Thermal efficiency can be improved by preventing heat loss due to direct fire. (2) Since the combustion air is first introduced into the cooling passage,
The temperature of the exterior top plate is kept low, and the safety of cooking can be improved by improving workability and preventing burns. (3) Since the heat dissipated by passing the combustion air through the cooling passage and the outside air passage is recovered, the thermal efficiency of the entire apparatus can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a combustion apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view of a conventional combustion device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Combustion part 13 Combustion chamber 14 Combustion gas passage 15 Combustion gas outlet 16 Outer body 17 Heat receiving part 18 Top plate 19 Outer body top plate 20 Cooling passage 21 Outer air passage 23 Blowing means 24 Air supply passage 25 Air inlet 26 Fuel supply means

──────────────────────────────────────────────────続 き Continuing on the front page (72) Chinori Aso, 800 Tsutsui-cho, Yamatokoriyama-shi, Nara, Matsushita Household Equipment Co., Ltd. No. 1 Tonen Co., Ltd. Research Institute (72) Inventor Kami Higashimoto 1-3-1, Nishitsurugaoka, Oi-machi, Iruma-gun, Saitama Prefecture Tonen Co., Ltd. Research Institute (56) References JP-A-61-237924 ( JP, A) JP-A-1-107010 (JP, A) JP-A-61-141604 (JP, U) JP-A-61-21205 (JP, U) JP-A-62-185311 (JP, U) JP-A 57-128913 (JP, U) Actually open 1981-157515 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24C 5/10 F23D 11/10 F23D 11/24 F23D 11 / 40-11/44

Claims (1)

(57) [Claims] 1. A combustion section for burning fuel, a combustion chamber provided downstream of the combustion section, and connected to an upper part of the combustion chamber and provided in an enlarged manner in an upper part of the combustion chamber. A combustion gas passage, a combustion gas outlet provided in a part of the combustion gas passage, an exterior body provided around the combustion portion, the combustion chamber, and the combustion gas passage, and inserted into a part of the combustion gas passage. A heat receiving portion, a top plate integrally formed with the heat receiving portion, an exterior body top plate provided on top of the exterior body having an end portion of the top plate opened to the outside, A cooling passage provided along the inside of the plate around the combustion gas passage, and outside air provided so as to communicate with the cooling passage and configured to cover the periphery of the combustion section and the combustion chamber. A passage, blowing means for supplying combustion air to the combustion section,
An air supply passage connected to the air supply side of the air blowing means and connected to the outer air passage; a plurality of air inlets provided in a part of the cooling passage; and a fuel for supplying fuel to the combustion section A combustion device comprising supply means.