JP3356155B2 - 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 Bunsen-type combustion apparatus for vaporizing a liquid fuel and ejecting the vaporized gas from a nozzle for combustion.

[0002]

2. Description of the Related Art Various types of combustion apparatuses of this type have been proposed. FIG. 4 shows an example, but this type is configured so as to save power. To explain the configuration, an electromagnetic pump 52 is mounted on the upper surface of an oil receiving tray 51, and one end of an oil feed pipe 53 is connected to the electromagnetic pump 52. The other end of the oil supply pipe 53 is connected to a circular evaporator 54, and the oil sent from the oil pan 51 by the electromagnetic pump 52 is supplied to the evaporator 54 and the evaporator lid 54.
A is sent to the vaporization chamber 55 constituted by A.

The vaporizing chamber 55 is provided with a throat 5 at the center of the vaporizing chamber.
6 is formed so as to surround the heater 57.
And a communication passage 59 communicating with the nozzle 58 is provided on the opposite side of the throat 56 from the inlet of the oil supply pipe 53 of the vaporization chamber 55.

[0004] A return pipe 60 is attached to the nozzle 58, and an electromagnetic solenoid 61 is connected to the other end of the return pipe 60. Electromagnetic solenoid 6
The side opposite to the return pipe 60 is communicated with the oil pan 51, and the electromagnetic solenoid 61 is provided with a needle 62 for opening and closing the nozzle hole 63 of the nozzle 58.

[0005] A burner 66 is provided in close contact with an upper portion of the vaporizer lid 54A provided so as to cover the outlet 65 of the throat 56, and vaporized by a flame 67 formed on the peripheral wall of the burner 66. The flange 68 on the upper part of the vessel 54 is configured to be heated.

In the above configuration, the vaporizing chamber 55 is provided with the heater 5
The oil is heated to a predetermined temperature by 7, and is vaporized in the process of reaching the communication passage 59 from the oil supply pipe inlet. The vaporized gas flows downward through the communication passage 59 at the lower part of the vaporization chamber and reaches the nozzle 58.

Here, when the vaporizer 54 reaches a predetermined temperature, the needle 62 opens, and the vaporized gas flows into the nozzle hole 63.
Squirts more. The vaporized gas flows vigorously toward the throat 56 provided at the center of the vaporizer, and accordingly, primary air is drawn in from between the throat lower end 69 and the nozzle 58 and mixed from the throat outlet 65 into the burner section 66 to be mixed. It is ignited on the outer periphery of the portion 66 to generate a combustion flame 67 and perform combustion.

On the other hand, the vaporizer 54 has an upper flange 68
Is heated by the combustion flame 67 and the burner 6
The vaporizer lid 54A is heated by the heat conduction from 6,
Due to the heat recovery action, vaporization is continued without energizing the heater 57, and combustion is continued, that is, self-combustion is performed, thereby saving power.

[0009]

However, the above conventional configuration has the following problems. That is, since the vaporizer 54 is formed on the outer periphery of the throat 56 so as to surround the same, the vaporizer 54 itself becomes large and the vaporizer 5
It is difficult to reduce the size of the carburetor 4 and the manufacturing cost is high. In addition, the heat capacity of the carburetor 54 is increased and it takes time to heat the carburetor 54 to a predetermined temperature at the start of operation, that is, the time until ignition becomes longer. There was a problem that.

Also, it is difficult to ensure the hermeticity of the vaporizer 54. Therefore, when the vaporizer 54 is actually to be commercialized, the vaporizer 54 joins a plurality of pipes and connects them with the throat 56. Complicated processing such as integral casting is required, and if a pipe is not cast, a vaporizer lid 54A must be covered on the vaporizer 54 and a sealing material must be applied between them. In addition, there has been a problem that the production cost is increased and airtight leakage and deformation due to variations in mass production occur, making it difficult to secure sufficient quality.

Further, the vaporizer 5 surrounding the throat 56
4 has a circular shape, for example, it is difficult to fill a vaporization element into a vaporization chamber for smooth vaporization of oil and to suppress the generation of tar, thereby limiting the selection of vaporization elements and improving performance such as tar properties. There was a problem that it was not possible to achieve sufficient.

On the other hand, in the above-mentioned conventional configuration, since the nozzle 58 goes around and separates from the lower surface of the vaporizer 54, the vaporizer 54 and the nozzle 58 have a shape that is largely thermally separated from each other. As the temperature of the gas decreases and the nozzle 58 is located below the vaporization chamber 55, the vaporized gas that has become high temperature remains in the upper part of the vaporization chamber 55, and the low-temperature non-vaporized gas or oil passes through the lower communication path. There is a problem in that the gas flows into the nozzle 58 through the nozzle 59, and the vaporized gas is difficult to flow, and the low-temperature gas and the low temperature of the nozzle 58 easily cause the vaporized gas to tar from the communication passage 59 to the nozzle 58.

For this reason, even if an attempt is made to fill the vaporizing chamber 55 or the communication path 59 from the vaporizing chamber 55 to the nozzle 58 with a vaporizing element for promoting vaporization, the vaporizer 5 surrounding the throat 56 is required.
Because of the circular shape of 4, it is difficult to fill such a vaporizing element into the vaporizing chamber, and there is a problem that the selection of the vaporizing element is limited and the performance such as tar property cannot be sufficiently improved.

Further, in the above-mentioned conventional configuration, the primary air suction amount can be increased as the nozzle 58 is separated from the vaporizer 54, but the position of the nozzle 58 cannot be lowered too much due to the tarring problem. There was also a problem that the air intake area determined by the positional relationship between the nozzle 58 and the throat 56 inlet could not be increased, so that sufficient primary air for combustion could not be obtained, and the combustion performance of the burner was restricted. Moreover, since the throat 56 and the carburetor 54 are integrally formed, the lower shape of the throat 56 is limited to a straight shape due to molding restrictions and the like. Has not been able to be performed sufficiently.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its first object to shorten the ignition time while taking advantage of the power saving by heat recovery, and to reduce the cost by facilitating the processing and making it compact. The third object is to suppress the tarification of the vaporized gas as a third object.
A fourth object is to improve the combustion performance by enlarging the primary air intake opening.

[0016]

In order to achieve the above object, the present invention provides a vaporizing section for vaporizing a fuel, a heater for heating the vaporizing section, a nozzle for ejecting gas vaporized in the vaporizing section, and a nozzle. A burner section for burning the jetted gas; and a burner receiving seat for holding the burner section. A nozzle mounting portion which is located at the substantially center end and communicates with the vaporizing portion through a linear communication passage is integrally formed, and the nozzle mounting portion is mounted on a burner receiving seat near the nozzle mounting portion. An opening for sucking primary air by an ejector action of gas ejected from a nozzle is formed, and a burner portion is covered on the burner receiving seat so as to cover the opening, and the burner receiving seat is provided in the burner portion. It is constituted of arranging the throat body.

[0017]

According to the present invention, as described above, a vaporizing section for vaporizing fuel, a heater for heating the vaporizing section, a nozzle for ejecting gas vaporized in the vaporizing section, a burner section for burning gas ejected from the nozzle, A burner receiving seat for holding the burner portion, wherein the burner receiving seat is located at a vaporizer located substantially linearly from an appropriate location on the outer periphery toward substantially the center and located at the substantially center side end of the vaporizer. A nozzle mounting portion communicating with the vaporizing portion through a linear communication passage is integrally formed, and primary air is ejected from a nozzle mounted on the nozzle mounting portion to a burner receiving seat near the nozzle mounting portion by an ejector action. An opening for sucking air is formed, and a burner portion is covered on the burner receiver so as to cover the opening, and the opening for taking in the primary air is provided from the burner receiving seat to the nozzle mounting portion. Since the extending rib portion is formed, the heat from the burner portion mounted on the burner mounting portion can be conducted to the nozzle not only on the vaporizing portion side but also on the rib portion side via the rib portion. In addition, the temperature of the nozzle that is easily cooled by the primary air can be maintained at a temperature sufficient for countermeasures against tar, and good tar performance can be maintained for a long period of time.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Reference numeral 1 denotes an oil pan, 2 denotes an electromagnetic pump attached to the oil pan 1, and 3 denotes an oil feed pipe connected to the electromagnetic pump 2. ,
Reference numeral 4 denotes a vaporization section connected to the oil supply pipe 3 for vaporizing oil sent from the inlet 4A. The inside is filled with a vaporization element (not shown) for promoting vaporization as necessary. By removing the vaporization lid 5 screwed to one end opening, the vaporization element can be replaced or the vaporization chamber 6 in the vaporization section can be replaced.
It can be cleaned. Numeral 7 designates a communication passage which communicates the nozzle mounting portion 8A, which is a part of the fuel path, with the vaporizing chamber 6, and integrally forms the vaporizing portion 4 and the nozzle mounting portion 8A. It is formed substantially linearly from the upper end of the other end toward the nozzle mounting portion 8A. Numeral 8 denotes a nozzle screw-connected to the nozzle mounting portion 8A, which jets a vaporized gas vaporized in the vaporizing chamber 6 from a nozzle outlet 9. Numeral 10 denotes an electromagnetic solenoid arranged in an axial line of the nozzle 8, which is provided in a return pipe 11 communicating with the nozzle mounting portion 8A, and drives a needle 12 for cleaning the nozzle outlet 9.

Reference numeral 13 denotes a burner receiving seat in which the vaporizing section 4 and the nozzle mounting section 8A are integrally formed in a wall thereof, and is formed in a circular flat plate shape as shown in FIG. The burner mounting portion 14 is provided, and a heater 15 for heating the vaporizing portion 4 to a predetermined temperature is attached to a lower surface of the burner mounting portion 14. This heater 1
Numeral 5 is fitted into a concave groove 13A formed on the lower surface of the burner receiving seat 13 and then fixed by biting, and both ends thereof are drawn out along the vaporizing part 4 as is apparent from FIG.

The burner receiving seat 13 has the nozzle mounting portion 8A formed on the upper surface of the central portion thereof, and the vaporizing portion 4 is formed on one side of the nozzle mounting portion 8A and below the nozzle mounting portion 8A. It is. And the vaporizing section 4
As is apparent from FIG. 2, the nozzle is formed linearly so as to intersect the nozzle mounting portion 8A from the outer peripheral direction of the burner receiving seat 13 and intersect with the nozzle mounting portion 8A. And the vaporization lid 5 is located on the outer peripheral side of the burner receiving seat 13. In addition, primary air is taken in while leaving the vaporizing portion 4 and the rib portion 16 formed radially between the burner mounting portion 14 and the nozzle mounting portion 8A on the outer periphery of the nozzle mounting portion 8A. Opening 17 is hollowed out.

Reference numeral 18 denotes a throat separate from the burner receiving seat 13 mounted on the burner receiving portion 14 of the burner receiving seat 13 so as to cover above the nozzle 8, and formed by drawing a metal tube. The lower portion has an arc-shaped divergent shape and is configured so that primary air can be easily taken in as a configuration in which a part of the nozzle 8 enters. Reference numeral 19 denotes a burner portion mounted on the burner mounting portion 14 so as to cover the throat 18. The burner portion 19 has a large number of flame holes 20 on its peripheral wall and burns vaporized gas ejected from the nozzle 8. 18
The screw 21 is fixed to the burner mounting portion 14 so as to sandwich the same. FIG. 3 shows another method for integrally forming the vaporizing section 4 and the nozzle mounting section 8A. The vaporizing section 4 is integrally formed on one side of the nozzle mounting section 8A, and a primary side is formed on the opposite side. An opening 17 for taking in air is formed.

In the above configuration, the oil delivered by the electromagnetic pump 2 enters the vaporization chamber 6 via the oil supply pipe 3.
The heater 15 heats the vaporizing section 4 until it reaches a predetermined temperature,
The oil in the vaporization chamber 6 is vaporized. The vaporized oil moves linearly toward the nozzle 8 and reaches the nozzle 8 via the communication path 7. At this time, the high-temperature vaporized gas is preferentially sent to the nozzle 8 from the upper communication path 7. In this state, the electromagnetic solenoid 1
The needle 12 driven by 0 opens, and the vaporized gas is ejected from the nozzle outlet 9. Thereby, primary air is taken in from the opening 17 for primary air intake around the nozzle 8 and mixed in the throat 18 and the burner section 19, and the burner section 19
Ignition occurs at the outer periphery, and a combustion flame 22 is generated. Thereafter, the combustion is continued by the same operation.

The burner seat 13 recovers heat from the heat conduction from the burner section 19 and the heat of the combustion flame 22 to a high temperature, and the vaporization section 4 integral therewith also has a high temperature. A power-saving type combustion device capable of self-combustion without energizing the power.

Here, the combustion device is provided with a burner receiving seat 13.
Is formed as a flat plate, the vaporizing section 4, the nozzle mounting section 8A, and the primary air intake opening 17 are integrally formed, and the throat 18 and the burner section 19 are attached to the upper surface of the burner receiving seat 13. Throat 18
It is possible to reduce the heat capacity and to design the device in a compact form without being affected by the heat.

Further, since the vaporizing portion 4 can be formed from the outer peripheral portion of the burner receiving seat 13 and the nozzle mounting portion 8A can be formed by cutting out from the upper surface, the hole is formed by forging a high melting point plate material such as brass. The vaporizer 4 and the nozzle mounting portion 8A and the burner receiving seat 13 having the opening 17 for primary air intake can be formed by a simple and short processing method of processing, and the vaporizer 4 is made of aluminum. It can be increased compared to the material used, and it has the effect of not only improving the tar resistance during normal use, but also having a cleaning function that raises the temperature further to burn it off when tar adheres. is there. Moreover, since the vaporizing portion 4 is formed by hollowing as described above, the end opening 4B is only a small part of the outer periphery of the burner receiving seat 13, and the sealing of the vaporizing lid 5 covering this opening 4B is easy and stable even in mass production. Airtightness can be secured.

Further, the vaporizing section 4 is integrally formed inside the burner mounting section 14 on the outer periphery of the burner receiving seat 13 and the heater 15 is mounted on the burner mounting section 14, so that the vaporizing section 4 and the burner are mounted. The mounting portion 14 is provided with the heater 15 at the time of ignition.
Is uniformly heated by the burner unit 1 during combustion.
As a result, the burner seat 13 is compacted as described above because the heat is uniformly heated to a high temperature by the conduction heat from the combustion chamber 9 and the heat from the combustion flame 22. It will be quickly heated to the vaporization temperature.

Further, since the nozzle 8 mounted on the nozzle mounting portion 8A is located above the vaporizing portion,
The vaporized gas from the vaporizing section 4 smoothly flows toward the nozzle 8 in a form according to the natural providence, and the vaporized gas is such that the completely vaporized high-temperature vaporized gas flows toward the nozzle 8. Therefore, the vaporized gas hardly turns into tar, and the tar performance is greatly improved.

Further, since the vaporizing section 4 is integrally formed between the burner mounting section 14 provided with the heater 15 of the burner receiving seat 13 and the nozzle mounting section 8A, the vaporizing section 4 and the nozzle mounting section 8 are formed.
The nozzle 8 attached to the nozzle A can be maintained at a high temperature by conduction heat from the heater 15 and the burner unit 19 mounted on the burner mounting unit 14, and tarification due to liquefaction of vaporized gas due to the low nozzle temperature can be achieved. This can be prevented.

Further, the vaporizing portion 4 formed between the burner mounting portion 14 and the nozzle mounting portion 8A is made linear so that the vaporizing portion 4 and the nozzle mounting portion 8A communicate with each other at the intersection thereof.
Moreover, since the opening 4B of the vaporizing section 4 and the connection port 4A for connecting the oil supply pipe 3 are located on the outer peripheral side of the burner mounting section 14, the vaporizing element 4 can be easily filled and removed with the vaporizing element. The material and the like of the vaporizing element can be freely selected, and a temperature difference can be provided between the inlet side and the outlet side of the vaporizing section 4 so that the inlet side is low and the outlet side is high. The further supplied fuel is efficiently vaporized in the vaporization section 4, and the vaporization performance can be easily improved.

Further, the nozzle mounting portion 8 is provided on the burner receiving seat 13.
A, the opening 17 for taking in the primary air is integrally formed with the burner 1, so that the burner 1
The temperature of the nozzle 8 mounted on the nozzle mounting portion 8A can be maintained relatively high by the conduction heat from the nozzle 9, and the opening 17 for primary air intake can be enlarged without worrying about a decrease in the nozzle temperature. . As a result, it is possible to form a sufficient opening 17 for taking in primary air without increasing the size of the entire burner receiving seat 13, and it is possible to secure good combustion performance while achieving compactness.

Further, the opening 17 for taking in the primary air is provided.
Is formed leaving a rib portion 16 extending from the burner mounting portion 14 to the nozzle mounting portion 8A, so that not only the vaporization portion 4 side but also the rib portion 16 side is interposed through the burner mounting portion 14 through the rib portion 16. The heat from the burner section 19 placed on the nozzle 8 can be conducted to the nozzle 8, and the temperature of the nozzle 8 which is easily cooled by the primary air is maintained at a temperature sufficient for the countermeasure against tar, and good tar performance is maintained over a long period of time. Can be retained. The rib portion 16 conducts the heat from the burner portion 19 to the vaporizing portion 4 as well as the nozzle mounting portion 8A, so that the temperature of the vaporizing portion 4 is maintained at a high temperature and at the same time. Further, if a temperature sensor is attached to the rib portion 16, not only the space can be saved, but also the temperature near the nozzle can be accurately measured.

[0032]

As described above, the combustion apparatus of the present invention has a vaporizing section for vaporizing fuel, a heater for heating the vaporizing section, a nozzle for ejecting gas vaporized in the vaporizing section, and a nozzle ejected from the nozzle. A burner for burning gas,
A burner receiving seat for holding the burner portion, wherein the burner receiving seat is located at a vaporizer located substantially linearly from an appropriate location on the outer periphery toward substantially the center and located at the substantially center side end of the vaporizer. A nozzle mounting portion communicating with the vaporizing portion through a linear communication passage is integrally formed, and primary air is ejected from a nozzle mounted on the nozzle mounting portion to a burner receiving seat near the nozzle mounting portion by an ejector action. And a burner portion is covered by the burner receiver so as to cover the opening, and the opening for primary air intake is formed leaving a rib portion extending from the burner receiving seat to the nozzle mounting portion. Therefore, not only the vaporization section side but also this rib section side can conduct heat from the burner section mounted on the burner mounting section to the nozzle via the rib section, and the primary air The cooled susceptible temperature of the nozzle can be held good tar performance over a long period of time to maintain a sufficient temperature tar measures.

[Brief description of the drawings]

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

FIG. 2 is a partially cutaway perspective view of the combustion device.

FIG. 3 is a plan view of a burner receiving seat of the combustion device.

FIG. 4 is a sectional view of a conventional combustion device.

[Explanation of symbols]

 Reference Signs List 4 Vaporizing section 7 Communication path 8 Nozzle 8A Nozzle mounting section 13 Burner receiving seat 14 Burner mounting section 15 Heater 16 Rib section 17 Primary air intake opening 18 Throat 19 Burner section

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Tomoya Kawaguchi 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Takeshi Shigeoka 1006 Kazuma Kadoma Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. In-house (56) References JP-A-63-83512 (JP, A) JP-A-4-64805 (JP, A) JP-A-56-124749 (JP, U) JP-A-3-112622 (JP, U) (Japanese) Shokai Sho 61-161513 (JP, U) Shokai Sho 62-166406 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F23D 11/02 F23D 11/40-11 / 44

Claims (1)

(57) [Claims] 1. A vaporizing section for vaporizing a fuel, a heater for heating the vaporizing section, a nozzle for ejecting gas vaporized by the vaporizing section, a burner section for burning gas ejected from the nozzle, and the burner section. With a burner receiving seat to hold,
The above-mentioned burner receiving seat communicates with the vaporizing portion through a linear communication passage which is located substantially linearly from an appropriate position on the outer periphery toward the center and is located at the substantially central end of the vaporizing portion. In addition to integrally forming the nozzle mounting portion, an opening is formed in the burner receiving seat near the nozzle mounting portion for sucking primary air by an ejector action of gas ejected from the nozzle mounted on the nozzle mounting portion, and covers the opening. Thus, the burner unit covers the burner receiving portion with the burner portion, and the primary air intake opening is formed by leaving a rib portion extending from the burner receiving seat to the nozzle mounting portion.