JP2003130462A - Warm air furnace - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance warmth by allowing wider venting of hot air by means of a simple arrangement concerning the hot air venting arrangement of a warm air furnace. SOLUTION: In the warm air furnace, propagating means 34 which spread horizontally have the same arrangement as deflecting means 33 which spread vertically upon receiving hot air near an exhaust port of a duct 31, so part of the hot air exhausted from the duct 31 is received by the propagating means 34, conveyed in the horizontal direction of the propagating means 34, and blown out of the deflecting means 33 made broader horizontally than the breadth of the duct 31. In this way, the hot air is widely blown out of the exhaust port of the duct 31. The hot air is widely blown out using the simple arrangement to enhance warmth.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, various types of hot air heaters of this kind have been proposed, and some of them are used for warm air heating by burning fuel gas obtained by vaporizing gas or kerosene. A warm air heater used for warm air heating by burning the liquid fuel gas will be described below as an example. Such a warm air heater is configured as shown in FIGS. 4 and 5.

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 burner section 4 by the pump 3 and burned there.

The generated combustion gas is guided upward by a combustion cylinder 5 arranged so as to cover the periphery of the burner portion 4, and a duct 7 covering the combustion cylinder 5 causes a blower 7 consisting of a propeller fan and a blower motor. Is mixed with the indoor air flow from the air conditioner and is discharged as warm air from the outlet 9 through the louver 10 to be used for heating. In this combustion apparatus, when the fuel supply amount is adjusted by changing the driving frequency of the pump 3 or the applied voltage, the primary air amount also increases / decreases accordingly, and the combustion amount is changed while the fuel / air ratio is kept constant. You can do it.

[0005]

However, in the warm air heater having such a structure, the components such as the tank 1, the cartridge tank 2, and the control board are inevitably arranged in the side portion of the main body case, that is, the side portion of the duct 6 in view of the arrangement of the components. In some cases, the warm air outlet 9 cannot be arranged almost in the front width of the main body case, and the side of the main body case where the parts are placed, for example, the side of the duct 6 is placed. The front surface is blocked. Actually, the air passage inside the opening of the warm air outlet 9 is unevenly distributed on the side where the tank 1 is not present because the tank 1 is on the side.

Therefore, it is difficult to balance the left and right of the hot air blow, and it is not possible to blow the hot air over the entire front surface of the main body case.

Therefore, in order to solve such a problem, conventionally, there has been proposed a configuration as shown in FIGS. 6 and 7 by utilizing the characteristic that air flow viscosity flows along a wall surface. FIG. 6 shows a sectional view of a main part of a second conventional hot air heater, and FIG. 7 shows a sectional view of a main part of a third conventional hot air heater.

A guide 11 is provided laterally on the side of the outlet of the duct 6 as shown in FIG. 6 so as to guide the flow of warm air, or a small chamber is provided on the side of the duct 6 as shown in FIG. 12 is provided.

However, even with such a configuration,
The warm air has a low flow velocity, is a hot air, and thus has a low density and a low viscosity. Further, since the blower 7 including the propeller fan and the blower motor is used, the flow of the warm air is not a laminar flow. Due to the viscosity of, the amount that flows along the wall surface is small,
Even in the method of providing the guide 11 in the lateral direction so as to guide the flow of the warm air and in the method of providing the small chamber 12 on the side portion of the duct 6 described later, the effect is not so great, and the main body case There was a drawback that it was not possible to blow out wide enough over the entire front surface, and the heating feeling could not be improved sufficiently.

The present invention has been made in view of the above problems,
The louver of the hot air outlet is provided with a propagation means so that the hot air is blown out to the full extent of the hot air outlet, which is wider than the outlet of the duct, to widen the warm air and improve the heating feeling. It is intended.

[0011]

In order to achieve the above object, the present invention provides a burner section for burning fuel, a combustion tube which covers the burner section and guides combustion exhaust gas upward, and a combustion exhaust gas which covers the combustion cylinder. And a box-shaped duct that mixes the indoor air flow from the blower to form a warm air path, and a warm air outlet that discharges warm air by communicating with the outlet of the duct,
At least one of the louvers provided at the warm air outlet has a propagation means for receiving the warm air and spreading it in the lateral direction, and the louver has a width wider than that of the outlet of the duct to blow out the warm air wider than the warm air outlet. Is configured as follows.

According to the above invention, the louver that receives the hot air from the hot air outlet and expands in the vertical direction is provided with the propagation means that receives the hot air and expands in the lateral direction. The part is received by the propagating means, the warm air is conveyed in the lateral direction of the propagating means, and the warm air is blown out from the louver which is wider in the lateral direction than the width of the duct, and the warm air is made wider than the duct outlet. By blowing the air from the air outlet, the air can be blown out in a wide range with a simple structure, and the feeling of heating can be improved.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The invention described in claim 1 of the present invention includes a burner section for burning fuel, a combustion tube for covering the burner section to guide combustion exhaust gas upward, and a combustion exhaust gas for covering the combustion cylinder. A duct that forms a warm air path by mixing with the indoor air flow from the blower, and a warm air outlet that discharges warm air by communicating with the outlet of the duct, and the warm air of the warm air outlet is provided. At least one of the louvers that receives and expands in the vertical direction is provided with a propagating means that receives the warm air and spreads it in the lateral direction, and the louver is configured to blow out wider than the warm air blowout port whose width is wider than the duct outlet. .

Since the louver is provided with the propagating means for receiving the warm air and spreading it in the lateral direction, a part of the warm air discharged from the duct is received by the propagating means and the warm air is conveyed in the lateral direction of the propagating means. The warm air is blown out from the louver that is wider than the width of the duct, and the warm air is blown out from the warm air blowout port that is wider than the duct outlet, so that you can blow out widely with a simple configuration. The feeling can be improved.

Further, in the invention described in claim 2, the propagation means is formed by bending the end portion of the louver substantially vertically, and the width is made wider than the discharge port of the duct so as to be provided in the entire lateral direction of the louver. It is configured so that the wind is blown out wider than the hot air blowout port than the duct discharge port.

Further, since the end portion of the louver is bent substantially vertically and the propagating means for receiving the warm air in the entire lateral direction and spreading it in the lateral direction is provided, a part of the warm air discharged from the duct is received by the propagating means. By transporting warm air more efficiently in the lateral direction of the propagating means and blowing out the warm air from the warm air outlet that is wider than the outlet of the duct, it is possible to blow out widely with a simple structure, and the feeling of heating is improved. Can be achieved.

According to the third aspect of the invention, the propagating means is arranged on the primary side of the louver in the air flow. The primary air side refers to the upstream side of the air flow received by the louver.

Further, the effect of conveying the hot air in the lateral direction of the louver is further enhanced, and the hot air is blown out from the hot air blowout port which is wider than the discharge port of the duct, so that it can be blown out in a wide range with a simple structure, and heating is performed. The feeling can be improved.

Further, in the invention described in claim 4, the area for blocking the air flow of the propagating means is set to 50% or less of the ventilation opening area of the warm air blowing port.

Further, the area for blocking the air flow of the above-mentioned propagating means is set to 50% or less of the ventilation opening area of the warm air blowing port, so that a wide feeling due to the diverting of the warm air in the lateral direction of the louver is obtained. As a result of experimental verification by the inventors, it has been clarified that the maximum effect of heating feeling can be obtained by the shunting flow to the front. Thereby, the feeling of heating can be improved.

[0021]

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

FIG. 1 is an external view of a warm air heater according to a first embodiment 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 FIG. 1 and FIG. 2, 21 is a main body case,
A tank 22 holding the liquid fuel and a removable cartridge tank 23 are arranged above the tank 22 on the lower side thereof. Reference numeral 24 is a pump attached to the upper surface of the tank 22.
6 is to be supplied with fuel. The burner section 26 is a combustion cylinder 2 arranged so as to guide the generated combustion gas upward.
A blower 28 composed of a propeller fan for taking in and sending the indoor air flow and a blower motor is disposed behind the combustion cylinder 27.

Reference numeral 31 is a duct that mixes the high temperature combustion exhaust gas from the combustion tube 27 and the indoor air flow from the blower 28 to form a hot air blowing path. In the process in which the indoor air flow from 28 flows and is blown out from the warm air outlet 32, the above combustion exhaust gas and the indoor air flow are mixed into warm air and are blown out from the warm air outlet 32 as warm air. And use it for heating.

As shown in FIGS. 3 (a) and 3 (b), a plurality of louvers 33 are provided at the hot air outlet of the duct 31, and the louvers 33 are arranged in the vertical direction of the air flow flowing in the duct 31 in the forward direction. Rectify. In addition, at least one of the louvers 33 is spaced from the warm air outlet 32,
Since the propagating means 34 (hereinafter referred to as a guide) that receives the wind and spreads in the lateral direction is provided, the guide 34 receives a part of the warm air discharged from the duct and conveys the warm air in the lateral direction of the guide 34. , The hot air is blown out from the warm air outlet 32 which is wider in the lateral direction than the width of the duct 31.

Reference numeral 35 is a control section for controlling the pump 24 and the blower motor 29 to burn the burner section 26, and the pump 24, the burner section 26, etc. are predetermined based on the operating condition signal inputted from the operation section. It is controlled by a sequence.

In the above structure, the cartridge tank 2
The liquid fuel supplied to the tank 22 so as to maintain a constant oil level from No. 3 is sucked up from the tank 22 by the pump 24, is sent to the burner section 26 via the oil supply pipe 25, and is burned. The exhaust gas flows above the combustion cylinder 27, is mixed with the indoor air flow from the blower 28 in the duct 31, and is discharged as warm air from the warm air outlet 32 through the louver 33 with its blowing direction controlled and discharged. Used for.

Here, the guide 34 provided on the louver 33 is used.
Is arranged so as to block the air flow flowing in the front direction of the duct 31, and is formed at least the width of the duct 31 in the lateral direction, so that the air flow flowing in the front direction of the duct 31 is It becomes possible to effectively block a part of the guide 34. The warm air is conveyed in the lateral direction of the guide 34, and the warm air is blown out from the louver 33 that is wider in the lateral direction than the lateral width of the duct 31 to warm it. By blowing out the air from the hot air outlet 32 that is wider than the outlet of the duct 31, the air can be blown out wide with a simple structure, and the feeling of heating can be improved.

Further, by providing the guides 34 over the entire lateral length of the louver 33, a part of the air flow flowing in the forward direction of the duct 31 can be effectively blocked, and the guides 34 are provided. The warm air can be efficiently conveyed in the lateral direction of the duct 31, and the warm air is blown out from the louver 33 that is wider than the lateral width of the duct 31 to blow the warm air into the duct 3.
By blowing out from the warm air outlet 32 which is wider than the first outlet, wide air can be blown out with a simple structure, and a feeling of heating can be improved.

Further, by providing the guide 34 on the air flow primary side of the louver 33, a part of the air flow flowing in the forward direction of the duct 31 can be effectively blocked and the guide 34 can be laterally moved. The warm air can be efficiently transported to the duct 31, and the warm air is blown out from the louver 33 which is wider than the lateral width of the duct 31, and the hot air is blown out from the warm air outlet 32 which is wider than the outlet of the duct 31. By doing so, it is possible to blow out wide with a simple structure and improve the feeling of heating.

By setting the area of the guide 34 to 50% or less of the air flow area in the front direction of the duct 31, the warm air feeling due to the air flow in the front direction of the duct 31 and the lateral direction of the guide 34 are set. A wide warm air feeling that is blown out from the warm air outlet 32 by the warm air conveyance in the direction can be achieved at the same time.
A simple structure can improve the feeling of heating.

[0032]

As described above, according to the present invention, the hot air outlet of the duct is provided with the hot air outlet having the louver, and at least one of the louvers is provided in the forward direction in the duct. In addition to vertically rectifying the flowing airflow, a guide that receives the wind and expands in the horizontal direction is provided apart from the hot air outlet, so that part of the hot air discharged from the duct is received by the guide, and The hot air can be blown out from the hot air blowout port that is wider than the width of the duct in the lateral direction, and the warm air can be blown out wide with a simple configuration. become,
The feeling of heating can be improved.

[Brief description of drawings]

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

[Figure 2] 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] External view of a conventional hot air heater

FIG. 5 is a sectional view of a main part of a conventional warm air heater.

FIG. 6 is a sectional view of a main part of a second conventional warm air heater.

FIG. 7 is a cross-sectional view of essential parts of a third conventional hot air heater.

[Explanation of symbols]

22 tanks 26 Burner section 27 Combustion cylinder 28 blower 31 duct 32 Hot air outlet 33 Louver (deflecting means) 34 Guide (Propagation Means)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazutada Momota             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 3L028 AA02 AC01 AC06                 3L037 BC02 BC06

Claims (4)

[Claims] 1. A warm air path by mixing a burner section for burning fuel, a combustion tube that covers the burner section and guides combustion exhaust gas upward, a combustion exhaust gas that covers the combustion cylinder, and an indoor air flow from a blower. And a deflecting means (hereinafter referred to as a louver) that receives the warm air from the hot air outlet and spreads it in a vertical direction. ), At least one of which is provided with a propagating means which receives the warm air and spreads in the lateral direction, and the deflecting means has a width wider than that of the duct outlet so that the hot air is blown out from the warm air outlet wider than the duct outlet. Hot air heater. 2. The propagating means is formed by bending an end of the louver substantially vertically and has a width wider than that of the discharge port of the duct so that warm air is blown out from the discharge port of the duct through the warm air blowing port. The warm air heater according to claim 1. 3. The warm air heater according to claim 1, wherein the propagating means is arranged on the primary side of the air flow of the louver. 4. The area for blocking the air flow of the propagation means is
The hot air heater according to claim 1 or 2, which has a ventilation opening area of 50% or less of the hot air outlet.