JP2001208429A - Fan forced heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the heating feeling by widening the blowout of warm air with simple constitution. SOLUTION: The upper part of the discharge port of a duct 29 is provided with a wind screen wall 29a, and the flank 29c of the duct corresponding to this wind screen wall 29a is provided with an opening 31 to take out warm air, and a guide part 32 to guide the warm air from this opening 31 to a blowout port 30, and a part of the indoor air current from a blower 28 flowing along the inwall of the duct 29 is taken out through the opening 31 at the flank of the duct 29, and that air current is discharged as warm air in the lateral direction of the blowout port 30 with the guide part 32, thus warm air is blown out widely from the blowout port 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm air heater for heating indoor air by mixing indoor air and combustion 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 this liquid fuel gas will be described as an example. Such a hot air heater is shown in FIG.
It is configured as shown in FIG.

That is, first, fuel is supplied from the cartridge tank 2 to the tank 1, and the fuel in the tank 1 is supplied to the burner section 4 by the pump 3 and is burned there.
The generated combustion gas is guided upward by a combustion tube 5 disposed so as to cover the periphery of the burner unit 4, and a duct 6 covering the combustion tube 5 supplies the indoor air from a blower 7 including a propeller fan and a blower motor. The louver 9 is mixed with the air flow and
The air is discharged as warm air through the air 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 hot air heater having such a configuration, the tank 1 is inevitably placed due to the disposition of parts.
In some cases, parts such as the cartridge tank 2 and the control board need to be placed on the side of the main body case, that is, on the side of the duct 6. In this case, it is necessary to arrange the air outlet 8 almost the entire front width of the main body case. And the side of the main body case on which the components are placed, for example, the front surface of the side of the duct 6, is closed. Therefore, there is a disadvantage that it is difficult to balance the left and right of the hot air blowout, it is not possible to blow out the entire front surface of the main body case wide, and it is not possible to improve the feeling of heating.

In order to solve such a problem, the characteristic of air flowing along the wall surface due to the viscosity of the air flow has been conventionally applied to the side of the outlet of the duct 6 as shown in FIG. A method has been proposed in which a guide 10 is provided in the side direction to guide the flow, or a small room 11 is provided on the side of the duct 6 as shown in FIG.

However, even with such a configuration, the hot air has a low flow velocity, is low in density and low in viscosity due to the hot air, and has a blower 7 comprising a propeller fan and a blower motor.
The flow of the warm air is not laminar because of the use of the air flow. Therefore, the amount of air flowing along the wall surface is small due to the viscosity of the air flow, and the guide 10 is provided in the side direction to guide the flow of the warm air described above. Even in the method, and in the method in which the small room 11 is provided on the side of the duct 6 described later, the effect is not so large, it is not possible to blow out wide enough to the entire front surface of the main body case, and the feeling of heating is sufficiently good. There was a drawback that could not be done.

[0007] The present invention has been made in view of the above problems,
By providing a guide portion near the outlet of the duct 6 and blowing out the warm air to the outlet 8 provided wider than the outlet of the duct 6, it is possible to widen the outlet of the warm air to improve the feeling of heating. It is intended.

[0008]

In order to achieve the above object, the present invention provides a burner section for burning fuel, a combustion cylinder communicating with the burner section to guide combustion exhaust gas upward, and covering the combustion cylinder. A duct that forms a hot air path by mixing the combustion exhaust gas and the indoor air flow from the blower; and an outlet that communicates with the hot air path and has a hot air outlet that is wider than the duct. Above the communicating part between the wind path and the air outlet, a wind shield wall is provided substantially perpendicular to the indoor air flow from the blower, and an opening for taking out hot air is provided on a duct side corresponding to the wind shield wall. And a guide portion communicating with the outlet from the opening, and a portion of the warm air in the duct is led out in a lateral direction of the outlet through the guide portion, and the hot air is discharged from the entire region of the outlet. It is configured to blow out.

According to the above invention, a substantially vertical wind shield wall is provided at the communicating portion between the duct and the outlet, and the opening and the guide portion are provided at the side of the duct corresponding to the wind shield wall. Part of the room airflow from the blower flowing along the inner wall can be taken out as warm air from the opening on the side of the duct. In addition, since a guide portion for guiding the taken-out hot air to the outlet is provided, the air flow is discharged to the side of the outlet by the guide portion, and the hot air is broader than the outlet of the duct from the outlet. The air can be blown out, and with a simple configuration, the warm air can be blown out widely, so that the feeling of heating can be improved.

[0010]

A hot air heater according to a first aspect of the present invention includes a burner section for burning fuel, a combustion pipe communicating with the burner section to guide combustion exhaust gas upward, and a combustion pipe covering the combustion cylinder and the combustion exhaust gas. A duct that forms a warm air path by mixing with the indoor air flow from the blower, and an outlet that communicates with the warm air path and has a warm air outlet that is wider than the duct; Above the communicating portion with the outlet, a wind shield wall substantially perpendicular to the indoor air flow from the blower is provided,
On the duct side corresponding to the wind shield wall, an opening for taking out hot air and a guide communicating with the outlet from this opening are provided, and a part of the hot air in the duct is provided through the guide. It draws out in the lateral direction of the outlet, and blows out warm air from the entire outlet.

In addition, a substantially vertical wind shield wall is provided at a communication portion between the duct and the outlet, and an opening and a guide portion are provided at the side of the duct corresponding to the wind shield wall. Part of the room airflow from the flowing blower can be taken out as warm air from the opening on the side of the duct. In addition, since a guide portion for guiding the taken-out hot air to the outlet is provided, the air flow is discharged to the side of the outlet by the guide portion, and the hot air is broader than the outlet of the duct from the outlet. It can be blown out, with a simple configuration,
You will be able to blow out hot air wide,
The feeling of heating can be improved.

Further, in the warm air heater according to claim 2, the wind shield wall is formed integrally with the duct.

A duct which forms a hot air path by mixing the combustion exhaust gas and the indoor air flow from the blower is provided with a substantially vertical wind shield wall so as to have a resistance to the air flow flowing toward the air outlet. With the configuration, a part of the air flow can be reliably blocked, and the loss resistance can be increased. Therefore, the airflow flowing along the side of the duct can be taken out from the opening provided on the side of the duct,
The hot air can be blown out wider than the whole area of the air outlet, and the structure can be simplified.

According to a third aspect of the present invention, the upper wall of the guide section connects the upper end of the opening provided on the duct side to take out hot air and the end of the guide section on the upper surface of the outlet. It has a curved surface or a slope.

The upper wall of the guide portion is formed as a curved or inclined surface so as to connect the upper end of the opening provided on the side of the duct for taking out hot air and the end of the guide on the upper surface of the outlet. Part of the indoor air flow from the blower that flows along the inner wall of the duct taken out through the opening will flow smoothly without stagnation, and the resistance will be reduced by that amount. As the amount of room air flow taken out increases, the stagnation does not occur, so that the temperature of the guide itself does not rise, and the volume of the guide can be reduced. Can be reduced.

According to a fourth aspect of the present invention, the guide portion is formed of a polyhedron having a plurality of inclined surfaces so as to guide the warm air from the duct obliquely forward of the outlet.

According to a fifth aspect of the present invention, in the warm air heater, the shape of the guide portion is such that the opening provided on the side of the duct is a triangle having a narrow front side and a vertex on the opposite side as a vertex, and a guide portion on the upper surface of the outlet. And the upper wall of the guide portion is inclined so as to form a triangular pyramid connecting the triangular opening and one end of the guide portion.

The shape of the guide portion is a triangle having an opening provided on the side of the duct narrowing in the forward direction and having a vertex as the vertex and the opposite side as the apex. Since the upper wall of the guide portion is an inclined surface so as to form a triangular pyramid connecting the opening and one point of the end of the guide portion, the effect of claim 3 can be more effectively obtained, and the upper wall of the guide portion can be obtained. However, since the rear part is wide and the front part has a slope that gradually narrows, the warm air taken out through the opening on the side of the duct is easy to flow from the side to the front, and the warm air is wide in the front. It can be blown out and the feeling of heating can be further improved.

[0019]

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

(Embodiment 1) FIG. 1 is an external view of a hot air heater according to Embodiment 1 of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a perspective view of a main part of a duct.

In FIGS. 1 and 2, reference numeral 21 denotes a main body case, a tank 22 holding liquid fuel on a lower side thereof, and a detachable cartridge tank 23 on the upper part of the tank 22.
Is arranged. Reference numeral 24 denotes a pump mounted on the upper surface of the tank 22, which supplies fuel from an upper end thereof to a burner 26 via an oil feed pipe 25. Burner part 2
Numeral 6 is covered with a combustion tube 27 arranged to guide generated combustion gas upward, and a blower 28 composed of a propeller fan for taking in and sending out indoor air flow and a blower motor is arranged behind the combustion tube 27. I have.

Reference numeral 29 denotes a duct which mixes the high-temperature combustion exhaust gas from the combustion tube 27 with the room air flow from the blower 28 to form a hot air blowing path. In the process from the flow of the indoor air to the outlet, the above-mentioned combustion exhaust gas and the indoor air flow are mixed into hot air in the process of being blown out from the outlet 30, and are blown out as hot air from the outlet 30 and used for heating. You.

As shown in FIG. 3, an opening 31 for taking out warm air to the side of the duct 29 at a portion having a wall on the front surface above the outlet of the duct 29, and the warm air from the opening 31 to the outlet 30. A guide portion 32 for guiding is provided, and an upper wall 32a of the guide portion 32 connects an upper end portion of the opening 31 provided on the side of the duct 29 for taking out hot air and an end portion of the guide portion 32 on the upper surface of the outlet 30. And the guide part 3
The hot air in the duct 29 is discharged from the outlet 2 in the lateral direction of the outlet 30, and the warm air is discharged from the outlet 3 more widely than the outlet of the duct 29.
It is configured to blow out from zero.

A louver 33 for controlling the flow of warm air is provided in the space of the outlet 30.

A control unit 34 controls the pump 24 and the blower 28 to burn the burner unit 26. The control unit 34 controls the pump 24 and the burner unit 26 in a predetermined sequence based on an operation condition signal input from the operation unit. Control.

In the above configuration, the cartridge tank 2
The liquid fuel supplied to the tank 22 so as to maintain a constant oil level from 3 is pumped up from the tank 22 by the pump 24, sent to the burner 26 via the oil feed pipe 25 and burned, and the generated high-temperature combustion The exhaust gas flows upward from the combustion tube 27, is mixed with the indoor air flow from the blower 28 in the duct 29, is discharged as warm air from the outlet 30 via the louver 33, and is discharged for use in heating. Is done.

Here, since the opening 31 for taking out warm air is provided on the side of the duct 29 at a portion having a wall at the front above the outlet of the duct 29, the room air from the blower 28 flowing along the inner wall of the duct 29 is provided. Part of the flow can be taken out as warm air from the opening on the side of the duct 29.

Since a guide portion 32 for guiding the taken-out hot air to the outlet 30 is provided, the air flow is discharged in the lateral direction of the outlet 30 by the guide portion 32 and the hot air is discharged to the duct 29. Can be blown out from the air outlet more widely than the outlet, and the warm air can be blown out in a wide configuration with a simple configuration, thereby improving the feeling of heating.

The upper wall 32a of the guide portion 32 is formed as a slope so as to connect the upper end of the opening 31 provided on the side of the duct 29 for taking out hot air and the end of the guide portion 32 on the upper surface of the outlet. A part of the indoor air flow from the blower 28 flowing along the inner wall of the duct 29 taken out through the opening 31 on the side of the duct 29 flows smoothly without stagnation, and the resistance decreases by that much. In addition, the amount of indoor air flow taken out of the duct 29 through the guide portion 31 increases, and stagnation does not occur. Therefore, the temperature of the guide portion 31 itself does not rise and the temperature of the guide portion 31 increases. Since the volume can be reduced, the ambient temperature in the vicinity of the guide portion 31 can be reduced. The degree rise so can be suppressed.

That is, the guide portion 31 is provided in the vicinity of the outlet of the duct 29, and the hot air is blown out to the outlet 30 which is provided wider than the outlet of the duct 29.
The blowing of warm air can be widened to improve the feeling of heating.

(Embodiment 2) FIG. 4 is a perspective view of a main part of a duct of Embodiment 2. The same portions as those described in the first embodiment are denoted by the same reference numerals and the description thereof will be omitted. Only the different portions will be described. The shape of the guide portion 35 is such that the opening 36 provided on the side of the duct 29 is directed forward. A narrowed vertex is formed as a triangle having the opposite side at the rear, and the end of the guide portion 35 on the upper surface of the outlet 30 is defined as one point.
The upper wall of the guide portion 35 is formed as an inclined surface so as to form a triangular pyramid connecting one point of the end of the guide portion 35.

The shape of the guide portion 35 is such that the opening 36 provided on the side of the duct 29 is narrowed in the forward direction, is a vertex, and is formed as a triangle having the opposite side, and the end of the guide portion 35 on the upper surface of the outlet 30 is formed. As one point, the upper wall of the guide portion 35 is an inclined surface so as to form a triangular pyramid connecting the triangular opening 36 and one point of the end of the guide portion 35, so that the effect of the first embodiment is more effectively achieved. can get.

That is, a part of the indoor air flow from the blower 28 flowing along the inner wall of the duct 29 is taken out through the opening 36 on the side of the duct 29, and the air flow is converted into warm air by the guide portion 35 to the outlet 30. The air can be discharged in the lateral direction and the warm air can be blown out from the outlet 30 wider than the outlet of the duct 29. With a simple configuration, the warm air can be blown out widely and the feeling of heating can be improved. Can be achieved. Further, a part of the indoor air flow from the blower 28 flowing along the inner wall of the duct 29 to be taken out flows smoothly without stagnation, and the resistance is reduced by that amount. Since the amount of the indoor air flow taken out via the air increases and the stagnation does not occur, the temperature of the guide portion 35 itself does not increase due to the heat build-up, and the volume of the guide portion 35 can be reduced. The ambient temperature in the vicinity of the section 35 can be reduced.
It is possible to suppress a rise in the temperature of components such as a control board disposed in the vicinity.

Further, since the upper wall of the guide portion 35 is formed as an inclined surface having a wide rear portion and a gradually narrow front portion, the duct 29
The warm air taken out through the side opening 36 is easy to flow from the lateral direction to the forward direction, so that the warm air can be blown out wide in the forward direction, further improving the feeling of heating. become.

In the present invention, the upper wall of the guide portion 32 or 35 is formed as an inclined surface or an inclined surface. However, this may be a curved surface, and other components may be formed as long as the object of the present invention is achieved. The configuration may be any.

[0036]

As described above, according to the first aspect of the present invention,
A substantially vertical wind shield wall is provided at the communication portion between the duct and the outlet, and an opening and a guide portion are provided on the side of the duct corresponding to the wind shield wall, so that the room from the blower flowing along the inner wall of the duct is provided. Part of the air flow can be taken out as warm air from the opening on the side of the duct. In addition, since a guide portion for guiding the taken-out hot air to the outlet is provided, the air flow is discharged to the side of the outlet by the guide portion, and the hot air is broader than the outlet of the duct from the outlet. The air can be blown out, and with a simple configuration, the warm air can be blown out widely, so that the feeling of heating can be improved.

According to the second aspect of the present invention, the flue gas and the indoor air flow from the blower are mixed so that the duct forming the hot air path has a resistance to the air flow flowing toward the air outlet. Since the substantially vertical wind shield is configured integrally, a part of the airflow can be reliably blocked,
The loss resistance can be increased. Therefore, the airflow flowing along the side surface of the duct can be taken out from the opening provided on the side of the duct, so that the warm air can be blown out wider than the entire area of the outlet, and the configuration can be simplified.

According to the third aspect of the present invention, the upper wall of the guide section is curved so as to connect the upper end of the opening provided on the duct side for taking out hot air and the end of the guide section on the upper surface of the outlet. Or because it is a slope, part of the indoor air flow from the blower that flows along the duct inner wall taken out through the opening on the side of the duct flows smoothly without stagnation, and the resistance decreases accordingly Therefore, the amount of room airflow taken out of the above-described duct through the guide portion increases, and the amount of room air flow does not stagnate, so that the temperature of the guide portion itself does not rise and the volume of the guide portion can be reduced. Therefore, the ambient temperature near the guide portion can be reduced.

According to the fourth and fifth aspects of the present invention, the shape of the guide portion is constituted by a polyhedron having a plurality of inclined surfaces. The upper wall of the guide section is an inclined surface so that it becomes a triangular pyramid connecting the opening of this triangle and one point of the end of the guide section with one end at the end of the guide section on the upper surface of the outlet as a triangle with opposite sides. Therefore, the effect of claim 3 can be more effectively obtained, and since the upper wall of the guide portion is an inclined surface having a wide rear portion and a gradually narrowing front portion, the guide portion is taken out through the opening on the side of the duct. The warm air easily flows from the lateral direction to the forward direction, so that the warm air can be blown out wide in the forward direction, and the feeling of heating can be further improved.

[Brief description of the drawings]

FIG. 1 is an external view of a hot air heater according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the hot air heater.

FIG. 3 is a perspective view of a main part of a duct of the hot air heater.

FIG. 4 is a perspective view of a main part of a duct according to a second embodiment of the present invention.

FIG. 5 is an external view of a conventional hot air heater.

FIG. 6 is a sectional view of a conventional same-temperature air heater.

FIG. 7 is a sectional view of a main part of another conventional hot air heater.

FIG. 8 is a sectional view of a main part of another conventional hot air heater.

[Explanation of symbols]

 26 Burner part 27 Combustion cylinder 28 Blower 29 Duct 30 Air outlet 32, 35 Guide part 31, 36 Opening on the side of duct

Claims (5)

[Claims] 1. A burner section for burning fuel, a combustion cylinder communicating with the burner section to guide combustion exhaust gas upward, and covering the combustion cylinder, mixing the combustion exhaust gas with a room air flow from a blower to heat the mixture. A duct that forms a wind path, and an air outlet that communicates with the hot air path and has a hot air outlet that is wider than the duct, and the blower is provided above a communication portion between the hot air path and the air outlet. A wind shield wall substantially perpendicular to the indoor air flow from the air outlet, a duct side corresponding to the wind shield wall for taking out warm air, and a guide portion communicating from the opening to the outlet. A hot air heater configured to provide a portion of the warm air in the duct in a lateral direction of the outlet through the guide portion and to blow warm air from the entire outlet. 2. The hot air heater according to claim 1, wherein the wind shield wall is formed integrally with the duct. 3. The hot-air heater according to claim 1, wherein the guide portion has an upper wall formed so as to connect an upper end portion of the opening portion and an upper surface of the outlet with an inclined surface or a curved surface. 4. The hot air heater according to claim 1, wherein the guide portion is constituted by a polyhedron having a plurality of inclined surfaces, and guides the hot air from the duct obliquely forward of the air outlet. 5. The shape of the guide portion is such that an opening provided on the side of the duct is a triangle having a narrow front side and a vertex as a vertex and the opposite side as a vertex. The upper wall of the guide portion is an inclined surface so as to form a triangular pyramid connecting the opening and one point of the end of the guide portion.
Hot air heater as described.