JP2000161791A - Hot air heater - Google Patents

Abstract

(57) [Summary] [PROBLEMS] The present invention relates to a hot air heater, which improves the mixing of indoor air flow and combustion exhaust gas with a simple configuration,
It reduces the unevenness in the temperature of the hot air, provides a comfortable feeling of heating, and prevents a local rise in temperature at the outlet. SOLUTION: A baffle plate 18 is disposed at an appropriate position on the upper inner wall of a combustion cylinder 17 so as to be inclined with respect to the flow of the flue gas and distributes the flue gas to the left and right.
1 is configured to control the mixing with the air flow from the air blower 1, and guides a part of the flow of the combustion exhaust gas in the inclined direction of the air control plate 18 regardless of the flow of the indoor air flow from the blower 21. , And can be dispersed, so that the mixture of the combustion exhaust gas and the indoor air flow can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air heater for heating indoor air by mixing indoor air and combustion exhaust gas.

[0002]

2. Description of the Related Art Various types of hot air heaters of this type have been proposed, and some of them are used for hot air heating by burning fuel gas obtained by evaporating gas or kerosene. Hereinafter, a hot air heater used for hot air heating by burning liquid fuel gas will be described as an example. Such a hot air heater is configured as shown in FIG.

That is, first, fuel is supplied to the tank 1 from the cartridge tank 2, and the fuel in the tank 1 is supplied to the pump 3.
Is supplied to the burner section 4 where it is burned. The generated combustion exhaust gas is guided upward by a combustion tube 5 disposed so as to cover the periphery of the burner unit 4, and is sent from a blower including a propeller fan 7 and a blower motor 8 through a duct 6 covering the combustion tube 5. The air is mixed with the indoor air flow, discharged as warm air from the outlet 9 through the louver 10, and used for heating. When the fuel supply amount is adjusted by changing the driving frequency and applied voltage of the pump 3, the primary air amount increases and decreases accordingly, and the combustion amount is changed while the fuel-to-air ratio is kept constant. Is available.

[0004]

However, in the warm air heater having such a configuration, a blower including a propeller fan 7 and a blower motor 8 is provided on the back of the main body, and the propeller fan 7 sucks indoor air to blow air. Therefore, the sucked air is blown forward while scrolling according to the rotation direction of the propeller fan 7, and is blown in a direction deviating in the process of flowing through the space between the combustion tube 5 and the duct 6. , And sometimes swirled and stagnated. For this reason, the air flow in the duct 6 is in a turbulent state,
The loss increases, or the mixing of the combustion exhaust gas discharged from the combustion tube 5 with the indoor airflow from the blower including the propeller fan 7 and the blower motor 8 is poor, and the hot air blown out from the outlet 9 due to unevenness is generated. And the temperature of the outlet 9 and the louver 10 becomes locally high. In particular, when the combustion amount is large and the combustion takes a long time to complete in the combustion tube 5 and the combustion flame extends to the vicinity of the exit of the combustion tube 5, the combustion exhaust gas does not disperse, the hot air flows as it is, and the outlet 9, the warm air is locally increased, impairing the user's feeling of use, and the temperature of the frame of the outlet 9 and the louver 10 is increased, and the paint and surface treatment applied to them are increased. Heat resistance was exceeded, and there was a risk of discoloration and peeling.

In order to solve this problem, in order to control the indoor air flow from a blower composed of a propeller fan 7 and a blower motor 8, a rectifying plate (not shown) is mounted on the inner surface of the duct 6, for example. Also in the configuration, the air supplied from the blower including the propeller fan 7 and the blower motor 8 easily flows along the wall surface, and the air flow flowing along the inner wall of the duct 6 and the air flow flowing along the peripheral wall of the combustion cylinder 5 are separated. As a result, there is a disadvantage that the combustion exhaust gas is not mixed very much and is easily discharged from the outlet 9. And
Even if a large number of flow straightening plates are used to improve this, the effect of only rectifying the air flow of the combustion exhaust gas in the duct 6 is small. And the air flow decreases, the warm air temperature rises overall, the wind speed drops, the heating efficiency drops, and if a flow straightening plate is set to secure the air flow, mixing cannot be performed sufficiently and the air blows out from the outlet 9 There is a problem that the warm air to be produced becomes uneven and the feeling of use is deteriorated.

[0006] The present invention has been made in view of the above problems,
By providing a baffle plate in the combustion cylinder and dispersing the combustion exhaust gas discharged from the combustion cylinder 5 and mixing it with the indoor air flow from the blower, with a simple configuration, without reducing the indoor air flow from the blower The purpose is to improve the mixing of the indoor air flow and the combustion exhaust gas, reduce the temperature unevenness of the hot air, provide a comfortable feeling of heating, and prevent the local temperature rise of the outlet and louver. is there.

[0007]

In order to achieve the above object, the present invention provides a main body case, a blower provided on the back of the main body case, a tank for storing fuel in the main body case, A pump for sucking and discharging the fuel, a burner unit for burning the fuel supplied by the pump, a combustion tube covering the burner unit and leading the combustion exhaust gas generated in the burner unit, and a combustion exhaust gas covering the combustion tube and A box-shaped duct is provided for mixing with the indoor air flow from the blower to form a hot air path, and is disposed at an appropriate position in the flue gas path from the burner portion to the outlet of the combustion cylinder at an angle to the flow of the flue gas. Provided a ventilation plate for distribution of flue gas,
It is configured to control mixing of the combustion exhaust gas and the air flow from the blower.

According to the above invention, a baffle plate is provided at an appropriate position in the flue gas path from the burner portion to the outlet of the combustion cylinder so as to be inclined with respect to the flow of the flue gas and distribute the flue gas to the right and left. Therefore, the flow of the combustion exhaust gas from the burner rises along the wall surface of the combustion cylinder, and the combustion exhaust gas in contact with the baffle plate flows along the inclined surface of the baffle plate and is deflected.
That is, regardless of the flow of the indoor air flow from the blower, a part of the flow of the combustion exhaust gas can be guided in the direction in which the baffle plate is inclined, and can be dispersed. The mixing of the streams can be improved.
Therefore, without reducing the indoor air flow from the blower, it is possible to effectively reduce the unevenness of the hot air temperature with a simple configuration, provide a comfortable heating feeling, and reduce the local temperature rise of the outlet. Can be prevented.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A hot air heater according to claim 1 of the present invention comprises a main body case, a blower provided on the back of the main body case, a tank for storing fuel in the main body case, Pump that sucks and discharges fuel from the burner, a burner section that burns fuel supplied by the pump, a combustion cylinder that covers the burner section and guides combustion exhaust gas generated in the burner section upward, and a combustion exhaust gas that covers the combustion cylinder. And a box-shaped duct that forms a hot air path by mixing the indoor air flow from the blower, and inclining obliquely with respect to the flow of the combustion exhaust gas from the burner section to an appropriate position of the combustion exhaust gas path at the combustion cylinder outlet. It has a configuration in which a disposed wind control plate for distributing combustion exhaust gas is provided.

[0010] In the hot air heater according to the second aspect, a baffle plate is provided at an appropriate position on the upper inner wall of the combustion cylinder so as to be obliquely inclined with respect to the flow of the flue gas and distributes the flue gas right and left. It has a configuration.

A baffle plate is disposed at an appropriate position in the flue gas path from the burner section to the combustion cylinder outlet, for example, on the upper inner wall of the combustion cylinder at an angle to the flow of the flue gas to distribute the flue gas to the left and right. Since it is provided, the flow of the combustion exhaust gas from the burner rises along the wall surface of the combustion cylinder, and the combustion exhaust gas in contact with the baffle plate flows along the inclined surface of the baffle plate and is deflected. That is, regardless of the flow of the indoor air flow from the blower, a part of the flow of the combustion exhaust gas can be guided in the direction in which the baffle plate is inclined, and can be dispersed. The mixing of the streams can be improved. Therefore, without reducing the indoor air flow from the blower, it is possible to effectively reduce the hot air temperature unevenness with a simple configuration, provide a comfortable heating feeling, and reduce the local temperature rise of the outlet. Can be prevented.

The warm air heater according to a third aspect of the present invention is a wind fan for distributing the combustion exhaust gas to the left and right by arranging it at an appropriate position on an upper inner wall forming the back surface of the combustion tube so as to be inclined with respect to the flow of the combustion exhaust gas. The plate is provided.

[0013] Further, a ventilation plate is provided at an appropriate position on the upper inner wall forming the back surface of the combustion cylinder so as to be inclined with respect to the flow of the combustion exhaust gas and distributes the combustion exhaust gas to the right and left.
The same effect as in the above-described claim 1 can be obtained, and the combustion exhaust gas is distributed to the left and right of the combustion cylinder, so that it is easy to mix with the indoor air flow from the combustion cylinder and the blower, and to the left and right rather than discharged to the front. Since the discharged air can maintain the distance to the outlet, the unevenness of the hot air temperature can be reduced more effectively, providing a comfortable feeling of heating and increasing the local temperature of the outlet. Can be prevented.

Further, there is also an advantage that the combustion noise in the burner portion is reflected on the baffle plate and is easily made in the left-right direction, so that the combustion noise in the front can be reduced.

The warm air heater according to a fourth aspect of the present invention is provided with a baffle plate disposed at an appropriate position on the front upper outer wall of the combustion cylinder so as to be obliquely inclined with respect to the flow of the flue gas and distributing the flue gas to the left and right. Configuration.

A ventilation plate is provided at an appropriate position on the upper front outer wall of the combustion cylinder so as to be inclined with respect to the flow of the combustion exhaust gas and distributes the combustion exhaust gas to the left and right. Since the flue gas flows forward along the wall surface and flows along the slope of the baffle plate and is deflected by contacting the baffle plate, the effect is diminished as the distribution position of the flue gas is closer to the outlet. Thus, substantially the same effects as those of the first aspect can be obtained.

In addition, since the baffle plate is provided at an appropriate position on the front upper outer wall near the opening of the combustion tube, the temperature of the baffle plate itself can be kept lower than in the case where the baffle plate is disposed inside the combustion tube. It is not necessary to worry about aging such as deformation and deterioration, and if the burner section has a low amount of combustion, installing a baffle plate in the combustion cylinder cools the baffle plate with the combustion gas that has not been completely burned. There is also a concern that carbon monoxide and soot may be generated, but the fear is eliminated because the baffle plate is disposed at a position where there is no risk of contact with the combustion flame.

According to a fifth aspect of the present invention, there is provided a warm air heater, wherein the combustion cylinder has an heavenly cylindrical shape having an opening at an upper front portion, the ceiling portion of which extends from the rear surface, and the front end has an upper opening. Is provided so as to substantially cover the air flow, and a baffle plate is provided at an appropriate position on the inner wall of the eave portion so as to be obliquely inclined with respect to the flow of the combustion exhaust gas and distributes the combustion exhaust gas to the left and right.

Further, since a baffle plate is provided at an appropriate position on the inner wall of the eaves portion of the combustion cylinder so as to be obliquely inclined with respect to the flow of the flue gas and distributes the flue gas to the left and right. In addition to ascending along, the amount of combustion exhaust gas that flows through the center and merges at the ceiling of the combustion cylinder and touches the dividing airflow plate increases, and flows along the inclined surface of the airflow control plate and is deflected. The effect of claim 2 can be obtained even more effectively, and since it is far from the combustion flame of the burner, the temperature can be kept lower than in the case where it is arranged in a combustion cylinder, so that there is no need to worry about deformation. The same effect as the fourth aspect can be obtained.

According to a sixth aspect of the present invention, in the hot air heater, the baffle plate is disposed obliquely with respect to the flow of the flue gas, and the front end on the upstream side is approached so as to branch the flue gas left and right. It is configured to be arranged in a substantially C-shape or a V-shape in contact.

The baffle plate is disposed obliquely with respect to the flow of the flue gas, and the upstream end is arranged in a V-shape by contacting the flue gas so that the flue gas branches right and left. Because it has been, the flue gas that has contacted the baffle plate is branched right and left and flows, and no longer flows on the back of the baffle plate,
It becomes possible to more effectively control the mixing of the combustion exhaust gas and the air flow from the blower.

[0022] Further, in the case where the exhaust gas is in contact with the baffle plate, the flue gas in contact with the baffle plate is divided into a right and left flow and a flow between the baffle plates. The combustion exhaust gas can be flowed so as to maintain the balance, and the mixture of the combustion exhaust gas and the airflow from the blower can be controlled with a balance.

The warm air heater according to claim 6 is provided with a baffle plate disposed at an appropriate position on the upper inner wall of the combustion cylinder so as to be inclined with respect to the flow of the flue gas and distributing the flue gas right and left. In addition, a rectifying plate for controlling the indoor air flow from the blower is provided at an appropriate position on the inner wall of the duct.

[0024] The same effect as in claim 1 is provided, since a baffle plate is disposed at an appropriate position on the upper inner wall of the combustion cylinder so as to be obliquely inclined with respect to the flow of the combustion exhaust gas and distributes the combustion exhaust gas to the left and right. And a rectifying plate that controls the indoor air flow from the blower is placed at the appropriate position on the inner wall of the duct, so that the flow in the duct can be rectified and the air volume can be secured, and the indoor air from the blower can be secured. Without reducing the flow
By improving the mixing of the indoor air flow and the combustion exhaust gas, the unevenness in the temperature of the hot air is reduced, a comfortable feeling of heating is provided, and a local rise in the temperature of the outlet can be prevented.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a hot air heater according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of an essential part in which a part of the duct is cut away.

In FIGS. 1 and 2, reference numeral 11 denotes a main body case, a tank 12 holding liquid fuel at a lower side thereof, and a detachable cartridge tank 13 above the tank 12.
Is placed. Reference numeral 14 denotes a pump mounted on the upper surface of the tank 12, which supplies fuel from an upper end thereof to a burner 16 via an oil supply pipe 15. Burner part 1
6 is covered with a combustion tube 17 arranged to guide generated flue gas upward, and a blower 21 including a propeller fan 19 and a blower motor 20 for taking in and sending out indoor air flow is provided at the back of the combustion tube 17. It is arranged. The combustion cylinder 17 has an heavenly cylindrical shape having an opening at the upper part of the front surface, and has a ceiling portion extending from the rear surface and an eave portion 17A provided at the front end so as to substantially cover the upper opening. On the upper inner wall forming the back surface of the gas turbine 17, there is provided a baffle plate 18 for distributing the flue gas disposed obliquely to the flow of the flue gas to the right and left.

Numeral 22 denotes a duct for mixing the high-temperature combustion exhaust gas from the combustion tube 17 and the indoor air flow from the blower 21 to form a hot air blowing path, and a propeller fan of the blower 21 between the left and right sides of the combustion tube 17. A rectifying plate 23 is provided for deflecting an airflow that rotates as a result of rotation of the airflow 19 from below upward.

Reference numeral 24 denotes an outlet for discharging hot air from the duct 22, and a louver 25 for controlling the flow of the hot air is provided.

A control unit 26 controls the pump 14 and the blower motor 20 to burn the burner unit 16. The pump 14 and the burner unit 16 are determined in advance based on an operation condition signal input from the operation unit. It is controlled in a sequence.

In the above configuration, the cartridge tank 1
The liquid fuel supplied to the tank 12 so as to maintain a constant oil level from 3 is pumped up from the tank 12 by the pump 14 and sent to the burner 16 via the oil supply pipe 15 to be burned. The exhaust gas flows upward from the combustion tube 17 and is mixed with the indoor air flow from the blower 21 in the duct 22, and is discharged as warm air from the outlet 24 through the louver 25 in a controlled blowing direction and discharged. Used for

Here, a baffle plate 18 is provided on the upper inner wall forming the back surface of the combustion cylinder 17 so as to be inclined with respect to the flow of the combustion exhaust gas and distributes the combustion exhaust gas to the left and right. The flow of the combustion exhaust gas in the corner portion 16 rises along the wall surface, and the combustion exhaust gas in contact with the baffle plate 18 flows along the inclined surface of the baffle plate 18 and is deflected. In addition, a rectifying plate 23 for controlling the indoor air flow from the blower 21 is disposed at an appropriate position on the inner wall of the duct between the left and right sides of the duct 22 and the combustion tube 17, so that the rectifying plate 23 is a propeller fan 1 of the blower 21.
9 rotates and deflects the air flow rising upward from below to rectify the flow, so that the air volume can be secured.
In other words, the space between the combustion cylinder 17 and the duct 22 is widened, or the flow of the indoor air flow due to the rotation of the propeller fan 19 of the blower 21 is rectified by the rectifying plate 23 to the portion where the indoor air flow is increased, and the airflow control plate is Since the flow of the combustion exhaust gas can be guided at 18, a part of the flow of the combustion exhaust gas can be guided in the direction in which the air control plate 18 is inclined regardless of the flow of the indoor air flow from the blower 21 and dispersed. As a result, the mixing of the combustion exhaust gas and the indoor air flow can be improved. Therefore, it is possible to effectively reduce the unevenness of the hot air temperature with a simple configuration without reducing the indoor air flow from the blower 21, to provide a comfortable feeling of heating, and to provide the localization of the outlet 24 and the louver 25. Temperature rise can be prevented. Further, since the combustion exhaust gas is distributed to the left and right from the back of the combustion tube 17, it is easy to mix with the indoor air flow from the blower flowing on the side of the combustion tube 17, and the outlet discharged to the left or right is discharged to the left rather than discharged to the front. Because you can keep the distance to 24,
The unevenness of the hot air temperature can be reduced more effectively, and a comfortable feeling of heating can be provided, and a local rise in the temperature of the outlet 24 can be prevented.

Further, the combustion noise in the burner section 16 is reduced.
8 has an advantage that it is easily reflected in the left-right direction and the combustion noise in the front can be reduced.

(Embodiment 2) FIG. 3 is a perspective view showing a main part of a hot air heater according to a second embodiment of the present invention. The same parts as those described in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described. A baffle plate arranged in a substantially U-shape so that the front end of the combustion cylinder 17 is close to the upstream side of the flow of the combustion exhaust gas, and the combustion exhaust gas is branched right and left. 27 is provided to control mixing of the combustion exhaust gas and the air flow from the blower.

Further, a baffle plate 27 is provided at an appropriate position on the upper front outer wall of the combustion cylinder 17 so as to be inclined with respect to the flow of the combustion exhaust gas and distributes the combustion exhaust gas to the right and left. The flue gas thus discharged flows forward along the wall surface and flows along the inclined surface of the baffle plate 27 to be deflected by contacting with the baffle plate 27. Although the effect is slightly diminished by the short distance after that, substantially the same effect as that of the above-described claim 1 can be obtained.

Further, since the baffle plate 27 is provided at an appropriate position on the upper front outer wall near the opening of the combustion tube 17, the temperature of the baffle plate 27 itself can be kept lower than in the case where the baffle plate 27 is disposed inside the combustion tube 17. In addition, there is no need to worry about secular change such as deformation and deterioration of the baffle plate 27, and when the bum part 16 has a low combustion amount, if the baffle plate 27 is provided in the combustion cylinder 17, combustion in the baffle plate 27 will occur. However, there is a concern that unburned gas which is not completely completed touches and is cooled to generate carbon monoxide, soot, etc. Is also gone.

Further, since the approaching wind control plate 27 is arranged in a substantially U-shape, the combustion exhaust gas in contact with the wind control plate 27 is separated into a left and right flow, Board 27
So that the combustion exhaust gas can flow so as to maintain the balance, and the mixture of the combustion exhaust gas and the air flow from the blower can be controlled with a balance. As a result, it is possible to effectively reduce the unevenness in the temperature of the hot air, provide a comfortable feeling of heating, and prevent a local rise in the temperature of the outlet 24. .

(Embodiment 3) FIG. 4 is a perspective view showing a main part of a hot air heater according to a third embodiment of the present invention. The same parts as those described in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described. A baffle plate in which the tip is brought into contact with the inner wall of the eaves portion 17A of the combustion cylinder 17 at the upstream side of the flow of the combustion exhaust gas, and is arranged in a V-shape so as to branch the combustion exhaust gas right and left. 28 is provided to control the mixing of the combustion exhaust gas and the air flow from the blower.

Since a baffle plate 28 is provided at an appropriate position on the inner wall of the eaves portion 17A of the combustion cylinder 17 so as to be inclined with respect to the flow of the combustion exhaust gas and distributes the combustion exhaust gas to the left and right. In addition to ascending along the wall surface, in addition to flowing in the center and merging at the ceiling of the combustion cylinder 17, the amount of combustion exhaust gas in contact with the baffle plate 28 increases and flows along the inclined surface of the baffle plate 28 to deflect. As a result, the above-described effect of the second aspect is more effectively obtained, and the temperature is lower than that in the case where it is disposed in the combustion cylinder 17 because it is far from the combustion flame of the burner section 16. Therefore, there is no need to worry about deformation or the like, and the effect of claim 3 can be obtained at the same time.

The baffle plate 28 is disposed obliquely with respect to the flow of the combustion exhaust gas, and the upstream end is contacted so as to branch the combustion exhaust gas to the left and right, and is arranged in a V-shape. The flue gas that has come into contact with the baffle plate 28 branches and flows right and left, and no longer flows on the back surface of the baffle plate 28, so that the flue gas and the airflow from the blower are more effectively mixed. As a result, it is possible to effectively reduce the unevenness in the temperature of the hot air, provide a comfortable feeling of heating, and prevent a local rise in the temperature of the outlet.

In this embodiment, the baffle plate 28 is provided at one place in the combustion cylinder 17. However, a plurality of baffle plates may be provided in combination. Although described at the same time, this does not have to include a current plate, and the configuration of each component may be any configuration as long as the object of the present invention is achieved.

[0042]

As described above, according to the warm air heater of the first and second aspects, the flue gas flow is disposed obliquely at an appropriate position on the upper inner wall of the combustion cylinder, which is the path of the flue gas. The exhaust gas flow in the burner section rises along the wall surface, and the exhaust gas in contact with the airflow control plate rises along the slope of the airflow control plate. It flows along and is deflected. That is, regardless of the flow of the indoor air flow from the blower, a part of the flow of the combustion exhaust gas can be guided in the direction in which the baffle plate is inclined, and can be dispersed. The mixing of the streams can be improved. Therefore, without reducing the indoor air flow from the blower, it is possible to effectively reduce the hot air temperature unevenness with a simple configuration, provide a comfortable heating feeling, and reduce the local temperature rise of the outlet. Can be prevented.

According to the third aspect of the present invention, the flue gas is distributed to the left and right sides at an appropriate position on the upper inner wall forming the back surface of the combustion cylinder so as to be oblique to the flow of the flue gas. Since the baffle plate is provided, the same effect as the above-described claim 1 is obtained, and the combustion exhaust gas is distributed to the left and right sides of the combustion cylinder, so that it is easily mixed with the indoor air flow from the combustion cylinder and the blower, In addition, since it is possible to keep the distance to the outlet when discharged to the left and right rather than discharged to the front, the unevenness of the hot air temperature can be reduced more effectively, and a comfortable feeling of heating is provided. In both cases, a local rise in the temperature of the outlet can be prevented.

Further, there is also an advantage that the combustion noise at the burner portion is reflected on the baffle plate and is easily made in the left-right direction, so that the combustion noise at the front can be reduced.

According to the fourth aspect of the present invention, a baffle plate is disposed at an appropriate position on the upper front outer wall of the combustion cylinder so as to be oblique to the flow of the flue gas and distributes the flue gas right and left. Is provided, the flue gas discharged from the combustion cylinder flows forward along the wall surface, contacts the baffle plate, flows along the inclined surface of the baffle plate, and is deflected. Although the effect is weakened by the portion closer to the outlet, substantially the same effect as in the above-described claim 1 can be obtained.

Further, since a ventilation plate is provided at an appropriate position on the front upper outer wall near the opening of the combustion cylinder, the temperature can be kept lower than in the case where it is disposed inside the combustion cylinder. If it is unnecessary, and if the amount of combustion in the burner part is low, if a baffle plate is provided in the combustion cylinder, unburned gas that has not been completely burned will be touched by the baffle plate and cooled, resulting in carbon monoxide and soot. Although there is a concern that the combustion flame may occur, the concern is eliminated because the baffle plate is disposed at a position where there is no risk of contact with the combustion flame.

According to the fifth aspect of the present invention, there is provided a hot air heater, which is disposed at an appropriate position on the inner wall of the eaves portion of the combustion cylinder so as to be oblique to the flow of the combustion exhaust gas and distributes the combustion exhaust gas to the left and right. Because a plate is provided, the flue gas rises along the wall surface and in addition to the central portion that joins at the ceiling of the combustion cylinder, the amount of flue gas in contact with the baffle plate increases, and the slope of the baffle plate Since it flows along the surface and is deflected, the effect of the above-mentioned claim 2 can be obtained more effectively, and since it is distant from the combustion flame of the burner part, it can be arranged in a combustion cylinder. In comparison, since the temperature can be kept low, there is no need to worry about deformation or the like, and the effect of claim 4 can be obtained at the same time.

According to the sixth aspect of the present invention, the baffle plate is disposed so as to be inclined with respect to the flow of the flue gas, and the upstream end is contacted so as to branch the flue gas left and right. Since it is arranged in a V-shape, the combustion exhaust gas that has contacted the baffle plate branches right and left and flows,
The mixture does not flow on the back surface of the baffle plate, and the mixture of the combustion exhaust gas and the airflow from the blower can be more effectively controlled.

[0049] Further, in the case where the exhaust gas is in contact with the baffle plate, the flue gas in contact with the baffle plate is divided into a right and left flow and a flow between the baffle plates. The combustion exhaust gas can be flowed so as to maintain the balance, and the mixture of the combustion exhaust gas and the airflow from the blower can be controlled with a balance.

According to the seventh aspect of the present invention, a baffle plate is disposed at an appropriate position on the upper inner wall of the combustion cylinder so as to be inclined with respect to the flow of the flue gas and distributes the flue gas to the right and left. The same effect as in claim 1 can be obtained, and a rectifying plate for controlling the indoor air flow from the blower is provided at an appropriate position on the inner wall of the duct. Airflow from the blower without reducing the indoor airflow, improving the mixing of the indoor airflow and the combustion exhaust gas, reducing the unevenness in the temperature of the hot air, providing a comfortable heating feeling, and the outlet. Can be prevented from increasing locally.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a hot air heater in Embodiment 1 of the present invention.

FIG. 2 is a perspective view schematically showing a main part of the apparatus, in which a part of a duct is cut away.

FIG. 3 is a perspective view schematically showing a main part of a second embodiment of the present invention, in which a part of a duct is cut away and schematically shown;

FIG. 4 is a schematic perspective view showing a main part of a third embodiment of the present invention, in which a portion of a duct is cut away.

FIG. 5 is a cross-sectional view of a conventional hot air heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Tank 14 Pump 16 Burner part 17 Combustion cylinder 17a Combustion cylinder eaves 18, 27, 28 Baffle plate 21 Blower 22 Duct

Claims (7)

[Claims] 1. A main body case, a blower provided on a back surface of the main body case, a tank for storing fuel in the main body case, a pump for sucking and discharging fuel from the tank, and a pump for supplying the fuel. A burner section for burning fuel, a combustion cylinder covering the burner section and guiding the combustion exhaust gas generated in the burner section upward, and a combustion path covering the combustion cylinder and mixing the combustion exhaust gas and the indoor air flow from the blower to provide a hot air path; And a ventilation plate for distributing flue gas, which is disposed obliquely with respect to the flow of flue gas at an appropriate position in the flue gas path from the burner portion to the outlet of the combustion cylinder. Hot air heater. 2. A hot air heater according to claim 1, further comprising a baffle plate disposed at an appropriate position on the upper inner wall of the combustion cylinder so as to be inclined with respect to the flow of the combustion exhaust gas and distributing the combustion exhaust gas to the right and left. . 3. The method according to claim 1, further comprising a baffle plate disposed at an appropriate position on the upper inner wall forming the back surface of the combustion cylinder so as to be inclined with respect to the flow of the flue gas and distributing the flue gas right and left. Hot air heater. 4. A hot air heating system according to claim 1, further comprising a baffle plate disposed at an appropriate position on the upper front outer wall of the combustion cylinder so as to be inclined with respect to the flow of the flue gas and distributing the flue gas right and left. Machine. 5. The combustion cylinder has an eccentric cylindrical shape having an opening at an upper part on the front surface, a ceiling portion extending from the rear surface, and a front end having an eave portion substantially covering the upper opening. 2. The hot air heater according to claim 1, further comprising a baffle plate disposed at an appropriate position on an inner wall of the eave portion so as to be inclined with respect to the flow of the combustion exhaust gas and distributing the combustion exhaust gas to the right and left. 6. The baffle plate is disposed obliquely with respect to the flow of the flue gas and has a substantially U-shape or contact with an upstream end which is close to the flue gas so as to branch right and left. The hot-air heater according to any one of claims 1 to 5, wherein the heater is arranged in a V-shape. 7. A ventilation plate which is disposed at an appropriate position on the upper inner wall of the combustion cylinder so as to be obliquely inclined with respect to the flow of the combustion exhaust gas and distributes the combustion exhaust gas to the right and left, and a room from the blower at an appropriate position on the inner wall of the duct. The hot air heater according to any one of claims 1 to 6, further comprising a rectifying plate for controlling an air flow.