JPH0227576B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a hot air heater that burns liquid fuel such as kerosene and blows out hot air.

[Conventional technology]

The conventional hot air heater as described above is shown in Figures 3 and 4.
This will be explained using figures. In these figures, 1 is a cartridge tank for storing kerosene, 2 is an oil pan on which the cartridge tank 1 is removably placed, 3 is an electromagnetic pump whose suction port side is connected to the oil pan 2, and 5 is an electromagnetic pump. A vaporizer is connected to the discharge port of 3 through an oil feed pipe 4, and a burner 6 is a burner in which the outlet of the vaporizer 5 and the throat inlet of the vaporizer 5 are arranged on the same axis and are connected to each other. It is placed vertically with its mouth facing upward. Reference numeral 8 denotes a duct that surrounds the periphery and upper surface of the heat shielding plate 7 that surrounds the flame opening of the burner 6, and the heat shielding plate 7 and the duct 8 form a passage that blows hot air downward with respect to the horizontal plane. are doing. 9 is a blower fan disposed at the entrance located at the rear of the duct 8;
Reference numeral 10 represents a current plate disposed at the outlet located at the front of the duct 8, and reference numeral 11 represents a case in which the above-mentioned members are provided.

Next, the operation of this warm air heater will be explained. Kerosene falls from inside a cartridge tank 1 into an oil pan 2 so as to maintain a constant oil level. The kerosene in the oil pan 2 is driven by the electromagnetic pump 3 and sent from the oil pan 2 through the oil feed pipe 4 to the vaporizer 5 which has been preheated to 200 to 300°C. The kerosene sent to the vaporizer 5 evaporates and is ejected from its outlet as steam, which is then sent into the burner 6 along with air.
Kerosene vapor and air are mixed in the burner 6 to form a premixture, which is ejected from the flame port of the burner 6 to form a flame and become combustion gas. Furthermore, the combustion gas rises inside the heat shield plate 7, mixes with the air sent in by the drive of the blower fan 9 installed in the rear part of the case 11, and is turned into hot air of approximately 100°C, which is passed through the straightening plate 10.
Air is blown downward from the front of the case 11 through the horizontal plane.

[Problem that the invention seeks to solve]

In the conventional hot air heater as described above, a vaporizer 5 and a burner 6 are installed in front of the cartridge tank 1, and a heat shield plate 7 is installed in order to blow hot air downward from the front of the case 11. Since a space is required for hot air to mix between the air heater and the baffle plate 10, the depth of the hot air heater becomes long, and if the depth is shortened, the cartridge tank 1 will be placed on one side in the frontage direction of the vaporizer 5. This caused the problem that the frontage (width) became wider and the heater became larger.

An object of the present invention is to solve the problems of the conventional devices as described above, and to provide a short and compact hot air heater with a simple configuration.

[Means for solving problems]

This invention is a warm air heater that blows hot air downward with respect to a horizontal surface as described above, in which the burner installed in the case is tilted backward.

[Effect]

In this invention, by tilting the burner backward, the flame opening of the burner is shifted to the rear of the case, and the flame is also tilted backward, thereby shortening the depth of the hot air heater without widening the frontage. The design was designed to be more compact.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In these figures, reference numeral 6 denotes a burner whose tip end is tilted backward with respect to a vertical plane by shifting the position of the flame port backward, and the throat inlet of the burner 6 is coaxial with the outlet of the vaporizer 5. Reference numeral 7 denotes a heat shielding plate surrounding the flame opening of the burner 6, and the front surface of the heat shielding plate 7 is inclined rearward. 8 is a duct surrounding the heat shielding plate 7;
The front surface of the duct 8 is inclined rearward and the depth is short. Reference numeral 9 denotes a blower fan disposed at the entrance of the duct 8 and provided at the rear of the case 11, and the case 11 has a short depth. The configuration of this embodiment other than the above is shown in FIG.
It is similar to the conventional one shown in Fig. 4, and Fig. 1,
The same reference numerals in FIG. 2 as in FIGS. 3 and 4 indicate corresponding parts.

Next, the operation of the hot air heater of this embodiment will be explained. The kerosene that has fallen from the cartridge tank 1 is stored in an oil pan 2 so that the oil level is constant. The kerosene in the oil pan 2 is driven by an electromagnetic pump 3 to pass through an oil pipe 4 and into a vaporizer 5 heated to 200 to 300°C, where it evaporates. The evaporated kerosene vapor is ejected from the vaporizer 5 and flows into the burner 6 from the throat inlet, accompanied by air. The inflowing kerosene vapor and air are mixed in the burner 6 to form a premixed mixture, which is blown out diagonally backward and upward from the flame port to form a flame. The combustion gas generated by this mixes well with air in the heat shield plate 7 and rises, and further mixes with the air sent in by the drive of the blower fan 9 in the duct 8, and smoothly moves diagonally downward and forward. The air flows through the rectifier plate 10 and is blown out of the case 11 as warm air at about 100°C.

In addition, in this embodiment, a case has been described where an electromagnetic pump is used to supply and inject oil to generate kerosene vapor and entrain air with it to create a premixture.
The present invention can also be applied to a hot air heater that generates a premixed air by the method of the embodiment.

〔Effect of the invention〕

As explained above, according to the present invention, in a hot air heater that blows hot air downward with respect to a horizontal surface, the depth that narrows the frontage can be reduced by simply tilting the burner backward with respect to the vertical surface. This has the advantage of being short and compact, as well as providing good combustion.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing a hot air heater according to an embodiment of the present invention, FIG. 2 is a front sectional view of the same, and FIG.
The figure is a side sectional view showing a conventional hot air heater, and FIG. 4 is a front sectional view thereof. 5... Carburizer, 6... Burner, 7... Heat shielding plate, 8... Duct, 9... Blowing fan, 11...
Case. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] 1. A vaporizer that vaporizes liquid fuel, a burner that burns a premixture of vaporized liquid fuel gas and air, and a blower fan that blows warm air mixed with combustion gas and air onto a horizontal surface. On the other hand, a hot air heater equipped with a heat shielding plate and a duct forming a passage for blowing air out of the downward case, characterized in that the burner is tilted rearward with respect to a vertical plane.