JPH0225087Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a hot air heater using gaseous fuel or vaporized liquid fuel.

(Prior Art) Conventionally, in a case provided with an intake port and an exhaust port, there is a hot air fan near the intake port, a combustor located downstream of the fan on the discharge port side, and a fuel facing one side of the combustor. A hot-air heater has previously been proposed in which the combustor is provided with a burner having a control section and a fuel supply port opened on the side opposite to the side where the fuel control section is provided.

However, since this type of hot air pipe is arranged along the combustor, the temperature of the fuel flowing through the pipe changes between ignition and steady combustion. That is, during steady combustion, the fuel tends to become diluted due to the rise in fuel temperature accompanying the rise in the temperature of the combustor. For this reason, if the settings are set for normal combustion during steady combustion, there will be an excessive supply of fuel during ignition, that is, until the fuel pipe rises to a certain temperature, resulting in unstable combustion on the verge of lift.During this period, the amount of carbon monoxide generated will increase. There are inconveniences such as an increase in the number of

(Problems to be Solved by the Invention) The object of the present invention is to provide a warm air heater that is free from such inconveniences.

(Means for solving the problem) The present invention is designed to obtain a hot air heater that can always perform stable combustion. A hot air fan, a combustor located downstream of the hot air fan, a combustor located on the discharge port side, and a fuel control unit facing one side of the combustor are provided, and a fuel supply port is opened on the side opposite to the side where the fuel control unit is provided. In the case where the burner is provided in the combustor, the area near the hot air fan in the gap formed between the fuel pipe communicating the fuel control unit and the fuel supply port of the burner, the hot air fan and the casing; It consists of piping.

(Example) An example of implementing the present invention will be explained with reference to the attached drawings.
In the drawing, 1 is a horizontally elongated cabinet with an intake port 2 at the upper part of the back and an outlet port 3 at the lower front, and 4 is a pair of left and right Sirotskov fans provided at the upper part of the cabinet 1 near the intake port 2. A hot air fan 5 is located downstream of the hot air fan 4 on the side of the discharge port 3, and a combustor with a built-in gas burner 6 provided at its lower part; 7 is provided on one side of the housing 1. A control room 7 is shown in which a blower 8 for supplying combustion air to the combustor 5 and a fuel control unit 9 such as a gas tank are housed. The combustor 5 consists of a main heat exchanger 5a and an auxiliary heat exchanger 5b connected to the main heat exchanger 5a, and the gas burner 6 is arranged below the main heat exchanger 5a. Three gas burners 6 are arranged, one pair and one in the center of the front, and the gas burners 6 on the right side and in the center in the drawing are the main heat exchanger 5.
A fuel supply port 6a is provided on the right side of a, and gas is supplied thereto through a fuel pipe 10 from the fuel control section 9. However, due to its configuration, the gas burner 6 located on the left side has its fuel supply port 6a opened on the left side of the main heat exchanger 5a, but in this way, the fuel supply port 6a is opened on the left side of the main heat exchanger 5a. Supply port 6a
In the case where a fuel pipe 10 is provided, a part of the fuel pipe 10 connecting the fuel supply port 6a and the fuel control section 9 must be installed along the combustor 5. In this case, as mentioned above, there is a disadvantage that the temperature of the fuel flowing through the pipe 10 changes between ignition and steady combustion, and the combustion state changes accordingly.

Therefore, in the present invention, a part of the fuel pipe 10 is piped near the hot air fan 4 in the gap 12 formed between the hot air fan 4 and the container casing 1. To be more specific, in the case where the Shirotzko fan as shown in the figure is provided, the tongue portion 4b formed on the outside of the fan case 4a of the fan 4 and the case 1
The piping was installed in the space formed between the

In addition, the main heat exchanger 5a shown in the figure is connected to the partition plate 1.
3, the gas burner 6 is divided into upper and lower chambers with the flame opening 6b as a boundary, and an air chamber (not shown) connected to the combustion blower 8 is formed in the lower part. Many air holes 1
4 to supply secondary air into the upper combustion chamber 16 from the air hole 14.

In the drawings, reference numeral 15 indicates an air supply/exhaust top connected to the auxiliary heat exchanger 5b and the combustion blower 8.

(Function) This device exchanges the heat released from the combustor 5 with the air blown from the hot air fan 4 and discharges it as hot air from the outlet 3. In this case, the hot air fan 4
When the fuel pipe 10 is installed in the gap 12 formed between the combustor 5 and the casing 1, the fuel pipe 10 is not affected by the heat of the combustor 5.

In addition, since the above-mentioned one is located near the hot air fan 4 whose temperature does not rise even during steady combustion, an embodiment will be described in which the combustor 5 discharges the exhaust gas from this to the outside via the air supply/exhaust top 15. However, the combustor 5 is not limited to such a structure, and it goes without saying that it may be of an indoor open type that releases exhaust gas indoors.

(Effect of the invention) As described above, according to the present invention, the fuel pipe that communicates the fuel control unit and the fuel supply port of the burner is connected to the air gap formed between the hot air fan and the casing in which the temperature does not rise during steady combustion. The fuel pipe is installed near the hot air fan where the temperature does not rise, in other words, near the hot air fan that takes in cold air, which is located near the intake port and upstream of the combustor, so that the fuel pipe is connected to the combustor as in the conventional example. It is possible to eliminate the above-mentioned inconvenience caused by the fact that the fuel flowing through the pipe is heated by this heat, and there is no need to provide a special gap for the fuel pipe, and the depth dimension can be reduced. It has the effect of providing a warm air heater that can be used.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention; FIG. 1 is a cross-sectional side view, FIG. 2 is a cross-sectional view taken along the line -
3 is a cross-sectional view taken along the same line, and FIG. 4 is a cross-sectional view taken along the line -- of FIG. 1. DESCRIPTION OF SYMBOLS 1... Instrument housing, 2... Intake port, 3... Outlet port, 4... Warm air fan, 5... Combustor, 6... Gas burner, 9... Fuel control part, 10... Fuel pipe, 12... Gap.

Claims (1)

[Scope of utility model registration request] A hot air fan near the intake port, a combustor located on the downstream side of the intake port, and a fuel control unit facing one side of the combustor are provided in a housing provided with an intake port and an exhaust port, and In the case where the combustor is equipped with a burner having a fuel supply port opened on the side opposite to the side where the fuel control section is provided, the fuel pipe communicating with the fuel control section and the fuel supply port of the burner is connected to the warm air. A hot air heater that is constructed by piping the hot air fan near the air gap formed between the fan and the cabinet.