JP2005188794A - Kerosene vaporizing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stable kerosene vaporizing device of a combustion device of a long service life by preventing the generation of tar causing the clogging of a wick and a nozzle in a vaporizing chamber. <P>SOLUTION: In this kerosene vaporizing device comprising the vaporizing chamber 13 formed in a vaporizer 27, the wick 29 mounted in the vaporizing chamber 13 in a state of being kept into contact with the inner wall of the vaporizing chamber 13 at its outer peripheral part, the nozzle 34 mounted on one end side of the vaporizing chamber 13, a burner 7 for burning a combustion gas jetted from the nozzle 34, a cap 32 for closing the other end side of the vaporizing chamber 13, a kerosene supply pipe 33 connected with the cap 32, a heat receiving fin 24 mounted on the vaporizer 27 for recovering combustion heat from the burner 7, and a vaporizer heater 48 for heating the vaporizer 27, a cylindrical projecting material 40 is mounted in a hollow part 30 of the wick 29 in a state of being internally kept into contact with the inner wall of the hollow part 30. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a kerosene vaporizing device for a vaporizing Bunsen combustion apparatus in which kerosene vaporized in a vaporizer is ejected from a nozzle and burned.

  As this type of conventional kerosene vaporizer, those having the structures shown in FIGS. 7, 8, and 9 are known. FIG. 7 is a longitudinal sectional view of a conventional kerosene combustion apparatus, FIG. 8 is a transverse sectional view of a conventional kerosene vaporizer, and FIG. 9 is a longitudinal sectional view of a conventional kerosene vaporizer.

  In the figure, 1 is a main body case, 2 is an oil receiving tank disposed at the bottom of the main body case 1, and 3 is a cartridge tank for supplying kerosene to the oil receiving tank 2. It can be installed freely.

  4 is an electromagnetic pump for pumping out kerosene from the oil receiving tank 2, 27 is a vaporizer for heating and vaporizing the kerosene supplied from the electromagnetic pump 4, and 33 is a kerosene supply pipe for connecting the vaporizer 27 and the electromagnetic pump 4. It is.

  Reference numeral 7 denotes a burner portion for burning the fuel gas vaporized by the vaporizer 27, and has a flame hole 42 made of a wire mesh as shown in FIG. 8 is a combustion cylinder covering the burner portion 7, 9 is a combustion gas discharge port provided at the upper front of the combustion cylinder 8, 10 is a blower fan installed at the back of the combustion cylinder 8, and 11 is discharged from the combustion gas discharge port 9. It is a discharge port for discharging hot air generated by mixing high-temperature combustion gas and air blown from the blower fan 10, and is provided at the lower front surface of the main body case 1.

  Next, in FIG. 8, reference numeral 27 denotes the above-described vaporizer, which is made by appropriately cutting a brass forging. 13 is a hollow cylindrical vaporizing chamber for vaporizing the fuel fed from the electromagnetic pump 4 and is provided in the vaporizer 27.

  Reference numeral 29 denotes a vaporization accelerating wick installed in the vaporizing chamber 13, which is formed of a copper plate fold body having excellent thermal conductivity, and is formed in a rod shape so that each fold portion becomes radial leaving a hollow portion in the center portion. It is formed and installed in the vaporizing chamber 13 so that its outer peripheral portion is in contact with the inner wall of the vaporizing chamber 13.

  A heat receiving fin 24 is forged integrally with the carburetor 27, and its tip faces the flame hole 42 of the burner portion 7. Reference numeral 53 denotes a thermistor attached to the vaporizer 27 and detects the temperature of the vaporizer 27.

  Next, in FIG. 9, 32 is one end side of the carburetor 27 and is a cap that closes the insertion side of the wick 29. The cap is made of a stainless material having a relatively low thermal conductivity. It is connected.

  Reference numeral 33 denotes a kerosene supply pipe for supplying liquid kerosene into the vaporizing chamber 13 and is connected to the small-diameter throttle portion 32a of the cap 32 described above.

  48 is a vaporizer heater for heating the vaporizer 27, which is a sheathed heater, which is bent into a U-turn shape as shown in the figure, and its parallel portions 54 are attached along both sides of the vaporizer 27. Since the U-turn portion 55 on the nozzle 34 side opposite to the cap 32 does not contribute much to the heating of the vaporizer 27, the coil pitch of the resistance heating wire 57 is set to another portion so that the amount of heat generated in that portion is conservative. It is more sparse.

  49 and 50 are upper-closed heater grooves for fitting the parallel portions 54 of the vaporizer heater 48 on both sides of the vaporizer 27, and 51 and 52 are caulking allowances at the lower opening edges of the heater grooves 49 and 50. It is. After the carburetor heater 48 is fitted in the heater grooves 49 and 50, the carburetor heater 48 is firmly fixed to the carburetor 27 through the caulking process of the caulking allowances 51 and 52.

  In the conventional combustion apparatus configured as above, when the vaporizer 27 reaches the vaporization temperature of kerosene by the vaporizer heater 48, the kerosene in the oil receiving tank 2 is supplied to the vaporizer 27 by the electromagnetic pump 4, and the vaporizer heater 48. The kerosene gas that has been vaporized by heating is ejected from the nozzle 34 into the burner section 7. At this time, the primary air is sucked into the burner section 7 by the ejector action of the jet gas, and the kerosene gas and the primary air are mixed in the mixing tube of the burner section 7 and then ejected from the flame hole 42, where the ignition device (Not shown) is ignited to form a combustion flame. A flame sensor (not shown) that receives a signal from the flame rod checks the presence / absence of flame, and if there is flame, it continues to burn.

  Since the heat receiving fins 24 are exposed to the combustion flame after the combustion flame is formed, it becomes possible to keep the temperature of the vaporizer 27 at the vaporization temperature of kerosene without the help of the vaporizer heater 48, and the vaporizer heater. The power supply to 48 is cut off. The combustion gas generated at this time is guided upward in the combustion cylinder 8 disposed so as to cover the periphery of the burner section 7, and mixed with the air from the blower fan 10 at the outlet of the combustion cylinder 8, It is discharged from the discharge port 11 and used for heating (see, for example, Patent Document 1).

JP 2000-329310 A

  However, in the above prior art, the heat source for heating the kerosene in the vaporizing chamber 13 to the vaporization temperature, that is, both the vaporizer heater 48 and the heat receiving fin 24 are provided outside the vaporizer 27. Since the heat supplied from the heat source part is not sufficiently transmitted to the center of the wick 29, the wick 29 is formed of a copper plate fold having a good thermal conductivity. However, the heating and cooling of the vaporizer 27 are repeated. As a result of the deformation of the wick 29, a gap is formed between the inner wall of the vaporization chamber 13 and the wick 29 in the center of the wick 29 due to deformation, and heat is not easily transmitted from the inner wall of the vaporization chamber 13 to the wick 29. There is a problem that the temperature of the lowers.

  Therefore, kerosene that is not vaporized in the hollow portion 30 at the center of the wick 29 may convect in a liquid state. Then, the kerosene vaporized at the outer peripheral portion of the wick 29 is directed toward the nozzle 34, and the hollow portion 30 of the wick 29. There is a problem that the wick 29 and the nozzle 34 are clogged by being cooled and re-liquefied when passing through the nozzle, and tarized and accumulated in the wick 29 and the nozzle 34.

  This invention solves said problem and provides the kerosene vaporization apparatus of the stable combustion apparatus which has a long lifetime.

  The present invention has been made to solve the above-mentioned problem, and consists of a vaporizer, a hollow cylindrical vaporization chamber formed in the vaporizer, and a fold-fold body, leaving a hollow portion in the center. A wick that is formed in a rod shape so that each pleat portion is radially formed, and the outer peripheral portion thereof is installed in the vaporization chamber so as to be in contact with the inner wall of the vaporization chamber, and a nozzle provided on one end side in the longitudinal direction of the vaporization chamber A burner for burning the fuel gas ejected from the nozzle, a cap attached to the vaporizer to close the other end of the vaporization chamber, a kerosene supply pipe connected to the cap, and a vaporizer A kerosene vaporizer comprising a heat receiving fin for recovering combustion heat from the burner portion and a vaporizer heater for heating the vaporizer so that the hollow portion of the wick is inscribed in the inner wall of the hollow portion Cylindrical bracing It is obtained by placing the wood.

  In the kerosene vaporizer according to the present invention, the tubular bracing material is disposed in the hollow portion of the wick so as to be inscribed in the inner wall of the hollow portion, so that the cooling of the vaporizer is repeated over a long period of time, and the wick shape drooping is repeated. Even if deformation occurs, the tension material that pushes the inner surface of the hollow part of the wick does not create a gap between the inner wall of the vaporization chamber and the outer peripheral surface of the wick, and heat is generated from the inner wall of the vaporization chamber to the wick. Can prevent heat from being transmitted to the center of the wick well, and the kerosene vaporized at the outer periphery of the wick passes through the hollow in the center of the wick while heading to the nozzle. In this case, since it is not cooled and does not re-liquefy, tar can be prevented from being generated, so that a kerosene vaporizer capable of performing stable vaporization over a long period of time can be obtained.

  In addition, when altered kerosene is used as the fuel kerosene, tar will inevitably gradually accumulate and accumulate in the vaporization chamber, but the strut material provided in the center of the wick has a cylindrical shape. As a result, tar will accumulate in the cavity secured in this center, and the amount of the cavity will not clog the vaporization chamber or nozzle until a considerable amount accumulates. Thus, the vaporizer can be stably combusted for a long period of time.

  An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a cross-sectional view of a main part showing an embodiment of a kerosene vaporizer according to the present invention, FIG. 2 is a vertical cross-sectional view, FIG. 3 is a perspective view, and FIG. 4 is a corrugated pleat of wick. FIG. 5 is a perspective view of a molded product rolled into a rod shape so that each fold portion of the wick is radial, and FIG. 6A is a cylindrical thin plate arranged in the hollow portion of the wick. FIG. 5B is a perspective view of a strut material according to an embodiment constructed by opening a large number of punching holes in FIG. 9B, and FIG. 7B is a perspective view of a strut material according to another embodiment composed of a cylindrical porous ceramic body disposed in the hollow portion of the wick. FIG.

  In the figure, 27 is a vaporizer, 13 is its vaporization chamber, and these are the same as the conventional one described above.

  Reference numeral 29 denotes a vaporization promoting wick mounted in the vaporizing chamber 13, and FIGS. 4 and 5 illustrate the shape of the wick 29 in detail.

  In FIG. 4, a wick 29 has a relatively good thermal conductivity, for example, a fold-folded body obtained by corrugating, that is, fold-folding a copper plate or wire mesh, and has a hollow portion 30 at the center as shown in FIG. It is left and formed into a rod shape so that each pleat portion is radial.

  As shown in FIG. 6 (a), reference numeral 40 denotes a strut, which is inserted so as to be inscribed in the inner wall surface of the hollow portion 30 of the wick 29 rolled into a rod shape, and has a strength capable of expanding the inner wall surface. The volume of the hollow portion 30 of the wick 29 in which a number of punching holes are formed in a thin plate made of nickel or stainless steel, such as nickel or stainless steel. Is configured so as to be minimized by the cylindrical shape being reduced by the insertion of the strut 40. Further, as shown in FIG. 6B, the strut 40 is a foam having a cylindrical shape made of a material that is difficult to thermally deform, such as a porous metal body or a porous ceramic body made of nickel, stainless steel, or the like. It may be configured to prevent a decrease in the space volume.

  And even if cold heat is repeated on the wick 29 over a long period of time due to the action of the bracing material 40, the wick 29 is prevented from sagging or deforming, so the adhesion between the outer peripheral surface of the wick 29 and the inner wall surface of the vaporizing chamber 13 is good. It ’s a good thing.

  32 is a cap for closing the vaporizing chamber 13 after inserting the wick 29 from one end side of the vaporizing chamber 13, and is made of a stainless material having a relatively low thermal conductivity, as shown in FIG. 1 and FIG. In order to suppress the heat of conduction to the small-diameter drawing portion 32a as much as possible, it is devised.

  Reference numeral 33 denotes a kerosene supply pipe for supplying kerosene into the vaporizing chamber 13, and is connected to the small diameter throttle portion 32 a of the cap 32.

  Reference numeral 34 denotes a nozzle for ejecting vaporized gas of kerosene vaporized in the vaporizing chamber 13, which is connected to the vaporizing chamber 13 on the side opposite to the kerosene supply pipe 33.

  48 is a vaporizer heater comprising a sheathed heater, which is bent into a U-turn shape as shown in FIG. 2 and its parallel portions are attached along both sides of the vaporizer 27. The U-turn portion on the nozzle 34 side is Since it does not contribute so much to the heating of the vaporizer 27, it is made so that the amount of heat generated in that portion is modest as described later.

  49 and 50 are upper-closed heater grooves for fitting parallel portions of the vaporizer heater 48 on both sides of the vaporizer 27, and 51 and 52 are caulking allowances of lower opening edges of the heater grooves 49 and 50. Yes, the carburetor heater 48 is fitted into the heater grooves 49 and 50, and then firmly fixed to the carburetor 27 through the caulking process of these caulking allowances 51 and 52.

  54 is a parallel portion of the vaporizer heater 48, 55 is a U-turn portion of the vaporizer heater 48, and 57 is a resistance heating wire embedded in the vaporizer heater 48. As shown in FIG. The coil pitch is densely wound so that the density is relatively large, and conversely, the U-turn portion 55 is sparsely wound so as to be relatively small. Thereby, the consumed electric power is used as effectively as possible for heating the vaporizer.

  Next, the effect | action by the above structure is demonstrated.

  When the operation start operation of the combustion apparatus is performed, a control circuit (not shown) starts energizing the carburetor heater 48 in the carburetor 27.

  Then, since the calorific heater 48 generates more heat in the parallel portion 54 than that in the U-turn portion 55, the consumed power efficiently heats both sides of the vaporizer 27, and the vaporizer 27 is brought to the vaporization temperature of kerosene. Raise quickly.

  When the temperature of the vaporizer 27 reaches a predetermined value, the control circuit operates a solenoid (not shown) that opens and closes the electromagnetic pump 4 and the nozzle 34 to inject vaporized gas from the nozzle 34 into the mixing tube of the burner unit 7. To do. At the same time, an ignition device (not shown) is operated.

  When the vaporized gas is ejected from the nozzle 34 toward the mixing tube, an ejector action is generated, and suction of the primary air starts through the primary air suction port, and mixing with the primary air is started in the mixing tube. And it becomes a uniform mixed gas, is discharged out of the burner part 7 from the flame hole 42, and is ignited by the above-mentioned ignition device, whereby the combustion operation is started.

  Therefore, the wick 29 installed in the vaporization chamber 13 is formed in a rod shape so that the folds of copper wire mesh with excellent thermal conductivity remain in the center and the hollow portions 30 remain in the center, and the pleats are radial. In addition, since the outer peripheral portion of the rod-like body is installed in a kind of press-fitted state so as to contact the inner wall of the vaporizing chamber 13, the heat supplied from the vaporizer heater 48 linearly enters the center of the wick 29. Accordingly, not only the outer peripheral portion of the wick 29 but also the kerosene in the central portion can be heated extremely efficiently.

  In addition, since the cylindrical bracing member 40 is disposed in the hollow portion 30 of the wick 29 so as to be inscribed in the inner wall of the hollow portion 30, the cold heat of the vaporizer 27 is repeated over a long period of time, and the shape of the wick 29 is reduced. Even if deformation occurs, a gap is not formed between the inner wall of the vaporizing chamber 27 and the outer peripheral surface of the wick 29 due to the action of the tension member 40 that spreads the inner surface of the hollow portion 30 of the wick 29, and the vaporizing chamber 27 Therefore, it is possible to prevent heat from being transmitted from the inner wall of the wick 29 to the wick 29, so that the heat from the body of the carburetor 27 can be transmitted well to the center of the wick 29. Even when it passes through the hollow portion 30 in the center of the wick 29, the tar is prevented from being re-liquefied without being cooled and thus stable for a long time. It can be a kerosene vaporizer capable of performing vaporization.

  In addition, when altered kerosene is used as the fuel kerosene, tar always inevitably accumulates and accumulates in the vaporizing chamber 13, but the strut 40 disposed in the center of the wick 29 is made of tar. Since it has a cylindrical shape with a large space volume that can increase the stock capacity, tar accumulates in the hollow portion secured in the center, and the amount is considerably reduced by making it hollow. Since the vaporizing chamber 13 and the nozzle 34 are not clogged until the amount is accumulated, it is possible to provide a vaporizer capable of stable combustion for a long period of time.

It is a principal part cross-sectional view which shows one Example of the kerosene vaporization apparatus of this invention. It is a longitudinal cross-sectional view similarly. It is a perspective view similarly. It is the perspective view of the fold body which similarly performed the corrugation processing (folding process) of the wick. Similarly, it is a perspective view of a molded product rounded into a rod shape so that each fold portion of the wick becomes radial. (A) is the perspective view of the tension material of the Example similarly formed by opening many punching holes in the cylindrical thin plate arrange | positioned in the hollow part of the wick, (b) is the cylinder similarly arranged in the hollow part of the wick It is a perspective view of the strut material of the other Example comprised with the shape-like porous ceramic body. It is a longitudinal cross-sectional view of the kerosene combustion apparatus of this invention and a prior art example. It is a cross-sectional view of a kerosene vaporizer of a conventional example. It is a longitudinal cross-sectional view of the kerosene vaporization apparatus of a prior art example.

Explanation of symbols

7 Burner part 13 Vaporizing chamber 24 Heat receiving fin 27 Vaporizer 29 Wick 30 Hollow part 32 Cap 33 Kerosene supply pipe 34 Nozzle 40 Strut material 48 Vaporizer heater

Claims (1)

A carburetor (27), a hollow cylindrical vaporization chamber (13) formed in the carburetor (27), and a fold-fold body, each pleat portion is radial, leaving a hollow portion (30) in the center. And a wick (29) installed in the vaporization chamber (13) so that its outer peripheral portion contacts the inner wall of the vaporization chamber (13), and the longitudinal direction of the vaporization chamber (13) A nozzle (34) provided at one end of the nozzle, a burner section (7) for burning the fuel gas ejected from the nozzle (34), and a vaporizer (27) to close the other end of the vaporizing chamber (13). ) Attached to the cap (32), a kerosene supply pipe (33) connected to the cap (32), and a heat receiving unit that is provided in the vaporizer (27) and recovers the combustion heat from the burner section (7). Fin (24) and vaporizer heater for heating the vaporizer (27) 48), the tubular strut member (40) is disposed in the hollow portion (30) of the wick (29) so as to be inscribed in the inner wall of the hollow portion (30). A kerosene vaporization device.

Images