JP2002147861A - Warm air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warm air heater which can expand the selection range of its installed location and, at the same time, can promote room temperature uniformization. SOLUTION: This warm air heater is provided with a fan 7 for convection, an encapsulating case 1 having an air inlet 3 through which air for warm air is sucked into the case 1 when the fan 7 is driven and a warm air outlet 6, and a burner 8 which is provided in the case 1 to burn fuel. The furnace is also provided with a heat chamber 13 in which the combustion gas from the burner 8 flows. The air inlet 3 is provided on the top side of the case 1 so that the air sucked into the case 1 through the inlet 3 may be heated in the heat chamber 13 and blown out of the warm air outlet 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a hot air heater such as an oil fan heater and a gas fan heater.

[0002]

2. Description of the Related Art FIG. 3 is a schematic diagram of a conventional hot air heater. A warm air heater (hereinafter referred to as a heater) 21 such as an oil fan heater includes an outer case 24 having a hot air outlet 22 and an air inlet 23, a burner 25 for burning liquid fuel such as kerosene, and a burner 25. And a convection blower 27 for releasing warm air into the room.

[0003] The outer case 24 has a hot air outlet 2 on the front side.
2. An air inlet 23 is provided on the rear surface, and an outer case 24 is provided.
A fan guard 33 made of a metal plate is attached to the back of the fan, and a convection blower 27 that blows air toward the combustion tube 26 is attached to the fan guard 33. A large number of ventilation holes 31 are formed.

During operation of the heater 21, the convection blower 27 is driven to drive the ventilation holes 3 of the fan guard 33.
Air is taken in from the air inlet 23 through 1, and the taken-in air mixes with the combustion gas to become hot air,
This warm air is blown forward from the warm air outlet 22 to heat the room.

[0005]

However, in the conventional heater 21 as described above, the room air for warm air is taken in from the rear of the outer case 24, so that the heater 2
An appropriate gap had to be provided between the rear surface of No. 1 and the wall 34 of the room. For this reason, the installation location of the heater 21 was restricted.

Further, the warm air blown out from the warm air outlet 22 rises quickly and warm air easily accumulates in the upper part of the room, so that the temperature of the whole room tends to be uneven.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and provides a hot-air heater capable of expanding the range of selection of the installation location of the heater and promoting uniform temperature in the room. The purpose is to provide.

[0008]

Means for Solving the Problems To achieve the above object, an invention according to claim 1 comprises a convection blower, an air suction port for sucking air for warm air by driving the convection blower, and a hot air blower. In a warm air heater having an outer case having an outlet, a burner provided in the outer case, and burning a fuel, and a combustion tube through which a combustion gas of the burner flows, the air suction port is provided at an upper portion of the outer case. It is characterized in that the temperature of the air sucked from the air suction port is raised by the combustion tube and blown out from the hot air outlet.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a hot air heater in one embodiment of the present invention, and FIG. 2 is an explanatory diagram illustrating the flow of air in a room when the heater of FIG. 1 is installed.

In FIG. 1, reference numeral 10 denotes a warm air heater (hereinafter referred to as a heater) represented by an oil fan heater. The heater 10 includes an inner case 4 and a convection heater inside a box-shaped outer case 1. Blower 7, burner device 8A, combustion blower 1
2 and an oil feeder (not shown) are provided.
Is provided at its lower end with a base 10b made of thick metal.

The outer case 1 has a hot air outlet 6 formed on the front surface, and an air inlet having a large number of ventilation holes 3a communicating with the hot air outlet 6 via an inner case 4 at the rear of the upper surface. A display / operation unit 18 provided with switches and a display unit necessary for operation control of the heater 10, such as an operation switch and an operation switch, is provided at the front of the upper surface.
Is provided. Note that a filter 2 for preventing dust and the like in the room air from entering the inside of the heater 10 is attached inside the air inlet 3.

The inner case 4 includes a front plate 4d and an upper plate 4a.
, Rear plate 4b, left and right side plates (not shown), and lower plate 4e.
A convection blower 7 is attached to a rear plate 4b of the inner case 4 and a ventilation hole 4c is provided.
Are formed above the upper plate 4a of the inner case 4 and the rear plate 4b.
A ventilation path 5 is formed between the housing 1 and the exterior case 1, and the air suction port 3 communicates with the ventilation hole 4 c via the ventilation path 5.

The convection blower 7 comprises a motor M having a rotating shaft and a fan F mounted on the rotating shaft.

The burner device 8A includes a burner 8 for burning liquid fuel such as kerosene, a combustion tube 13 functioning as a heat exchanger through which the combustion gas of the burner 8 flows, and a heat shield plate 1
A combustion air intake 15 for taking in combustion air supplied to the burner 8 is provided on a lower rear surface of the outer case 1, and a room temperature is detected above the combustion air intake 15. A room temperature sensor 16 is provided. In addition, between the heat shield plate 14 and the upper plate 4 a of the inner case 4, there is formed a cooling ventilation passage 17 for making it difficult for the combustion hot air of the burner 8 to be transmitted to the top surface of the outer case 1.

An oil feeder (not shown) is provided on one side of the outer case 1 and is a cartridge tank for storing kerosene as fuel, and stably supplies fuel supplied from the cartridge tank to the combustion system. An oil receiving tank that functions as a buffer for supplying the fuel and the fuel in the oil receiving tank
An electromagnetic pump and the like for supplying to the power supply are provided.

Since the warm air heater according to the present invention is configured as described above, when the operation of the heater 10 is started, the fuel supplied by the oil feeder and the combustion air inlet 15 are started. Is supplied to the burner 8 with the combustion air introduced from
The burner 8 starts burning. By the start of combustion of the burner 8, the combustion gas rises and flows in the combustion tube 13, and the combustion exhaust gas flows out of the upper open surface of the combustion tube 13 into the inner case 4 below the heat shield plate 14.

On the other hand, the convection blower 7 is driven with the start of combustion of the burner 8, and the room air flowing from the air suction port 3 by the drive of the convection blower 7 is supplied between the outer case 1 and the inner case 4. Through the convection blower 7, the cooling air passage 17, and the combustion tube 13.
, And is warmed by passing through the surroundings, and the warm air is blown into the room from the warm air outlet 6 on the front side.

FIG. 2 is an explanatory diagram illustrating the flow of air in a room where a heater is installed. The warm air blown out from the warm air outlet 6 of the heater 10 installed at the lower part of the room rises from a position away from the warm air outlet 6 and moves to the upper part of the room. The air in the room above the heater 10 is sucked into the outer case 1 from the air inlet 3 by the convection blower 7, and this air is sucked into the inner case 4 through the ventilation passage 5, After the heat is exchanged in the combustion tube 13, the air is blown out from the hot air outlet 6, and thus the air in the room circulates and flows through the entire room.

As described above, in the present embodiment, since the air suction port 3 is provided on the upper surface of the exterior case 1, the convection of the air in the entire room is promoted, so that the air temperature in the entire room can be made uniform. Becomes Furthermore, since the upper air of the room is circulated to the lower part of the room, it is possible to suppress the uneven heating such that the upper temperature of the room is higher than the set temperature and the lower temperature of the room is lower than the set temperature. In addition, the time required for the lower temperature of the room to reach the set temperature can be shortened, and an energy saving effect can be obtained.

Further, since the air inlet 3 for warm air is provided on the upper surface of the outer case 1, the heater 10 and the wall 3 of the room are provided.
The heater 10 can be installed without providing a large gap between the heater 4 and the like, and the range of selection of the installation location of the heater 10 can be expanded, and the air inlet 3 or the air inlet 3 The degree of contamination of the provided filter 2 and the like can be easily confirmed from above the heater 10, and the filter 2 can be easily attached / detached and cleaned.

As described above, the present invention has been described based on one embodiment, but the present invention is not limited to this.

[0022]

According to the present invention, in a warm air heater,
An air inlet is provided in the upper part of the outer case to take in air for warm air from above the equipment. In addition, the air above the outer case can be taken in from the air inlet, the convection of air in the entire room can be promoted, and the temperature in the room can be made uniform.

In addition, since the air suction port for warm air is provided on the upper surface of the outer case, the degree of contamination of the air suction port can be easily checked, so that maintenance is excellent.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a hot air heater in one embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating the flow of air in a room in which the heater of FIG. 1 is installed.

FIG. 3 is a schematic configuration diagram of a conventional hot air heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer case 2 Filter 3 Air inlet 4 Inner case 5 Ventilation path 6 Hot air outlet 7 Convection blower 8 Burner 8A Burner device 10 Hot air heater 12 Combustion blower 13 Combustion cylinder 14 Heat shield plate 15 Combustion air intake 16 Room temperature sensor 17 Ventilation path for cooling 18 Operation unit 33 Fan guard 34 Wall

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Minoru Sugimoto, 1 Otsuki-cho, Ashikaga-shi, Tochigi Sanyo Electric Air Conditioning Co., Ltd. F-term (reference) 3L028 AA02 AC06 3L037 BB01

Claims (1)

[Claims] A convection blower, an outer case having an air inlet and a warm air outlet for sucking air for warm air by driving the convection blower, and a burner provided in the outer case for burning fuel. In the warm air heater having a combustion tube through which the combustion gas of the burner flows, the air suction port is provided in an upper portion of an outer case, and the temperature of the air sucked from the air suction port is increased by the combustion tube to generate a hot air outlet. A hot air heater characterized by being configured to blow out from the air.