JP3334405B2 - Hot air heater - Google Patents

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 using the heat of a heat source to blow out indoor air as warm air.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, this type of warm air heater has a main body case 14, a placing table 14A on which the main body case 14 is mounted, and disposed in the main body case 14 to burn fuel. A burner section 15, a combustion cylinder 16 covering the burner section 15 and guiding the combustion exhaust gas generated in the burner section 15 upward, and a blower 8 covering the combustion cylinder 16 and disposed in the main body case 1. A duct 18 that mixes with the indoor air flow to generate warm air, an outlet 19 for discharging warm air from the duct 18, and a number (four or more) of which controls the flow of air in the lateral direction of the outlet. An L-shaped fixed louver 20 is provided.

[0003] The combustion gas generated by the burner section 15 in the above-described configuration is guided upward by a combustion tube 16 disposed so as to cover the periphery of the burner portion 15, and a duct 17 covering the combustion tube 16 is provided. Is mixed with the indoor air flow from the blower 18 and is discharged as warm air through the outlets 19 between the louvers 20 provided in large numbers, and is used for heating.

A large number of L-shaped fixed louvers 20 are used.
When the device is viewed from the front, the metallic luster in the outlet 19 and the discoloration of the built-in components such as the combustion tube 16 that becomes high in temperature are hardly seen, so that the appearance is improved. The distal end of the fixed louver on the discharge side is curled 20A downward so as not to cut the hand as shown in FIG.

[0005]

However, in the hot air heater having such a configuration, the vortex generated at the end of a large number of L-shaped fixed louvers 20 having a short sectional length when passing through the outlet 19 is provided. The rectification effect is caused by the resistance component of the air flow, the resistance component that blocks the cross-sectional area of the outlet 19, and the vortex that disturbs the flow at the tip curling portion 20A, but the flow rate of the indoor air flow from the blower 17 is weakened, , And according to experiments, there was a problem that the capacity was reduced by about 10%.

[0006] That is, the indoor air flow from the blower 17 is
When passing through the outlet 19, the above-described fixed louver 20
Due to the flow path resistance, there is a problem that the flow velocity is weakened and the air volume is reduced, for example, the temperature of the hot air is increased, or the distance that the hot air reaches is short, and the heating effect is reduced. Further, if the shortage is to be compensated for by the capacity UP of the blower 17, there is a problem that noise, power consumption becomes large, and the blower 17 itself has to be replaced. Also, the curling portion 2 of the fixed louver 20
At 0A, a portion of the warm air can easily flow downward,
In order to further improve the feeling of heating, to allow the warm air of a specific gravity to rise, which is likely to rise, to reach far away, the warm air may flow downward through the angle of the fixed louver 20, so that the warm air flows to the floor. The collision caused a problem that the floor surface temperature became too high.

Further, if the combustion exhaust gas and the indoor air flow from the blower 17 are not sufficiently mixed, the hot air having the temperature unevenness is discharged from the outlet 19 as it is, and a local sense of cold wind or hot wind is generated. There was also a problem that the feeling of heating was not good.

Further, since a large number (four or more) of L-shaped fixed louvers 29 are arranged in the lateral direction of the outlet 19 and the intervals are small and the number is large, the L-shaped fixed louvers 29 are included in the indoor air flow adhering to the fixed louvers 20. There was also a problem that it was difficult to remove dust and dirt.

A large number (four or more) of L-shaped fixed louvers 20 are arranged in the lateral direction of the outlet 19, so that the material costs and man-hours are high, and the chattering sound generated when the connection state is poor is reduced. However, there is also a structural concern that the outlet 19 tends to be closed because the discharge side end of the fixed louver is almost flush with the front surface of the main body case in order to improve the appearance.

A first object of the present invention is to reduce the resistance of a fixed louver to increase the amount of air flow, and to make the warm air reach far and enhance the heating effect.
A second object is to make the distribution of hot air temperature uniform, and a third object is to make it easier to clean the fixed louvers, and to simplify the structure of the fixed louvers to reduce man-hours and costs. Is the fourth object.

[0011]

The present invention achieves the above objects.
To achieve this, in the first configuration, the main body case, a heat source provided in the main body case, a blower for supplying hot air to the heat source, and an outlet for discharging warm air from the blower, A fixed louver disposed at the outlet, wherein the fixed louver has a substantially slope shape in which the upstream side close to the heat source is inclined upward and the downstream side serving as the hot air discharge side is substantially horizontal or slightly upward. One to three fixed louvers are provided as a wide plate body, and the interval width on the downstream side of the outlet divided vertically by the fixed louvers is reduced in order from the top.

Further, in the second configuration, the main body case, a heat source provided in the main body case, a duct that mixes the heat of the heat source with the indoor air flow from the blower to generate hot air, An outlet for discharging hot air, and a fixed louver disposed at the outlet, the fixed louver inclining the upstream side close to the heat source upward and the downstream side serving as the hot air discharge side to be substantially horizontal. Two or three fixed louvers are arranged as a substantially slope-shaped wide plate body slightly upward, and the interval width on the downstream side of the outlet divided vertically by the fixed louvers is reduced in order from the top and ,
The space on the upstream side, which is the heat source side of the fixed louver, is the largest at the middle stage.

[0013] In the third configuration, the fixed louver is formed such that the end on the discharge outlet side is rounded downward and turned back,
In order that the lower surface side of the fixed louver does not form stagnation, the end surface is connected so that the outline of the lower surface side of the louver sectional shape becomes gentle.

[0014]

According to the first aspect of the present invention, as described above , the fixed louver has a substantially sloped shape in which the upstream side close to the heat source is inclined upward and the downstream side serving as the hot air discharge side is substantially horizontal or slightly upward. Arrange one to three as a wide plate body,
And since the interval width on the downstream side of the outlet divided vertically by the fixed louver is made smaller in order from the top, similarly, the resistance component of the eddy current generated by reducing the end portion of the fixed louver almost disappears, In addition, the warm air flows along the fixed louver so that the warm air can be smoothly discharged from the outlet, so that there is no resistance component that blocks the cross-sectional area of the outlet, and the air volume increases. In addition, the flow rate of the indoor air flow from the blower is not weakened, but the warm air reaches far, so that the heating effect is increased, and at the same time, the interval between the fixed louvers is widened, so that cleaning becomes easy. When the device is viewed from the front, discoloration of the built-in components such as the metallic luster in the outlet and the high temperature of the combustion tube becomes difficult to see, and the appearance is improved.

Further, in the second configuration, the fixed louver is a substantially slope-shaped wide plate body in which the upstream side near the heat source is inclined upward and the downstream side which is the hot air discharge side is substantially horizontal or slightly upward. Two or three louvers are arranged, and the width of the space between the outlets divided vertically by the fixed louvers is reduced in order from the top. Similarly, the end of the fixed louver is reduced, so that the resistance component of the eddy current almost disappears, and the hot air flows along the fixed louver and discharges the hot air smoothly from the outlet. As a result, there is no resistance component that blocks the cross-sectional area of the outlet, and the air volume increases. In addition, the flow rate of the indoor air flow from the blower is not weakened, but the warm air reaches far, so that the heating effect is increased, and at the same time, the interval between the fixed louvers is widened, so that cleaning becomes easy. Then, a large amount of heat from the heat source section and the indoor air flow flow into the middle stage where the interval on the upstream side, which is the heat source section of the fixed louver, is the widest. As a result, the temperature unevenness of the warm air is reduced, and the warm air reaches far, thereby further improving the heating effect.

Further, in the third configuration, the fixed louver of the wide plate having a substantially slope shape is rounded downward at the end on the discharge outlet side so as to be folded back, and the lower surface of the fixed louver is formed so as not to stagnate. Because the end face is connected so that the outer contour line on the lower surface side of the louver cross section is gentle, the discharged hot air flows along the upper and lower surfaces of the fixed louver, and especially the hot air flowing on the lower surface turns the louver Because the flow is not obstructed at the end of the turbulence and the vortex does not occur there, the air volume does not decrease, and the hot air flows at the discharge angle of the fixed louver with the downstream side that is the hot air discharge side almost horizontal or slightly upward So that the warm air can reach far away, and the heating effect is improved.

[0017]

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

First, the configuration of a warm air heater using the combustion apparatus of the present invention will be described with reference to FIGS. 1 and 2. Reference numeral 1 denotes a main body case, and a tank 2 holding liquid fuel at a lower side thereof. A detachable cartridge tank 3 is disposed above the tank 2. Reference numeral 4 denotes a pump mounted on the upper surface of the tank 2, which supplies fuel from an upper end thereof to a burner 6 through an oil supply pipe 5.

Reference numeral 7 denotes a combustion tube for guiding the combustion gas from the burner section 6 upward, and a blower 8 for taking in and sending out the indoor air flow is disposed at the back thereof. Reference numeral 9 denotes a duct which mixes the combustion gas from the combustion tube 7 with the indoor air flow to generate hot air.

Reference numeral 10 denotes an outlet for discharging hot air from the duct 7, which is formed in a part of the width of the main body case. In this embodiment, two fixed louvers 11, 12 for controlling the flow of the hot air are provided. I have.

The fixed louvers 11, 12 are formed so as to substantially fill the lateral width of the main body case 1, and the upstream side close to the heat source in the entire lateral width is inclined upward, and the downstream side, which is the hot air discharge side, is substantially horizontal. It is a wide plate of a substantially slope shape which is formed smoothly so as to be upward, and the upper tier 11 of the fixed louver has a configuration in which the width of the upward inclined portion is made longer in order than the lower tier 12.

The width of the space on the downstream side of the outlet 10 divided vertically by the fixed louvers 11, 12 is reduced in order from the top at a ratio of about 3: 2: 1, and the heat source side of the fixed louvers 11, 12 is reduced. In the configuration, the interval on the upstream side is set to be the largest in the middle stage, and the ends of the fixed louvers 11, 12 on the discharge outlet side are rounded downward as shown in FIG. The ends of the fixed louvers 11 and 12 on the discharge outlet side are connected to the main body case 1 so that the outer surfaces of the lower surfaces of the louver cross-sections are smooth so that the sides do not form stagnation. 4 mm or more, and the amount of protrusion is within the outline of the placing table 1A.

A control unit 13 controls the combustion of the burner unit 6 and the blower 8, and controls the pump 4 and the blower 8 in a predetermined sequence based on an operation condition signal input from the operation unit. Has become.

In the above configuration, the cartridge tank 3
The liquid fuel supplied to the tank 2 so as to maintain a constant oil level from the tank 2 is sucked up from the tank 2 by the pump 4, sent to the burner section 6 via the oil feed pipe 5, and burned. Then, the generated combustion gas flows above the combustion cylinder 7, is mixed with the indoor air flow from the blower 8 in the duct 9, is discharged as warm air, and is used for heating. And
The control unit 13 controls the pump 4, the blower 8, and the like in a predetermined sequence based on the conditions set by the operation unit, and performs operation control such as variable combustion amount.

Here, the fixed louvers 11, 12 have a substantially slope-like wide shape in which the upstream side close to the heat source is inclined upward and the downstream side, which is the hot air discharge side, is formed substantially horizontally or slightly upward. Since two plate members are provided, the resistance components of the eddy current generated by reducing the end portions of the fixed louvers 11 and 12 are almost eliminated.

Further, hot air flows along the fixed louvers 11 and 12, and there is no resistance component that blocks the cross-sectional area of the outlet 10, so that warm air can be discharged smoothly from the outlet. When there is a fixed louver, the air volume is about 10% to 20% higher than when there is no fixed louver.
Then, the flow rate of the indoor air flow from the blower 8 is not weakened, but the warm air reaches far and the heating effect is increased.

Assuming that the width of the outlet 10 in the vertical direction is about 90 mm, the interval width on the downstream side of the outlet 10 divided vertically by the fixed louvers 11, 12 is about 45 mm, about 30 mm, about It becomes 15 mm, and the interval between the fixed louvers 11 and 12 is widened, so that the finger can be easily inserted and cleaning becomes easy.

The outlet 10 is formed in a part of the width of the main body case 1, and the fixed louvers 11, 12 are formed to be almost full in the width of the main body case 1. When the blowout port 10 is partially closed, the fixed air louver 11 without the blowout port 10
Twelve portions flow in the lateral direction, so that the influence of blockage can be reduced.

Further, since the fixed louver upper stage 11 has a configuration in which the width of the upwardly inclined portion is made longer in the order of the lower stage 12, even when the heat of the burner unit 6 and the indoor air flow are insufficient, the burner unit 6 can be used. Heat flows through the fixed louvers 11 and 12 in order from the top, and the indoor air flow and the fixed louvers 11, 1
Mixing between the two reduces the temperature unevenness of the warm air.

Further, since the interval width on the downstream side of the outlet 10 divided vertically by the fixed louvers 11 and 12 is made smaller in order from the top, when the device is viewed from the front, the inside of the outlet 10 Discoloration of built-in components such as the metallic luster and the high temperature of the combustion tube 7 becomes difficult to see, and the appearance is improved.

The width of the space on the downstream side of the outlet 10 divided vertically by the fixed louvers 11 and 12 is gradually reduced from the top, and the space on the upstream side of the fixed louvers 11 and 12 on the burner section 6 side is reduced. Since the middle section is configured to be the largest, the heat of the burner section 6 and the indoor air flow flow into the middle section having the widest interval on the upstream side, which is the burner section 6 of the fixed louvers 11, 12, and the gap is narrow. And is mixed between the fixed louvers 11 and 12 and discharged vigorously from the hot air discharge side, thereby reducing the temperature unevenness of the hot air.
The warm air reaches far and the heating effect is further improved.

Further, the fixed louvers 11 and 12 of a wide plate having a substantially slope shape are bent at the ends on the discharge outlet side so as to be rounded downward, and the lower surfaces of the fixed louvers 11 and 12 are formed so as not to form stagnation. Since the end faces are connected such that the outer contour line on the lower surface side of the louver cross-sectional shape is gentle, the discharged hot air flows along the upper and lower surfaces of the fixed louvers 11 and 12, and in particular, the hot air flowing on the lower surface is Since the flow is not hindered at the folded ends of the fixed louvers 11 and 12 and a vortex does not occur there, the fixed louvers 11 do not reduce the air volume and have the downstream side, which is the hot air discharge side, almost horizontally or slightly upward. , 12 at the discharge angle, the warm air can flow to a far distance, and the heating effect is improved.

Further, since the ends of the fixed louvers 11 and 12 on the discharge outlet side protrude more than 4 mm from the main body case 1 and the protruding amount is within the outline of the placing table,
Even if the outlet is blocked for some reason,
The table 1A and the ends of the fixed louvers 11 and 12 are prevented from being completely closed, so that safety is maintained.

In the above embodiment, the vertical size of the outlet is about 100 mm, and the fixed louvers 11, 1
2 is described, but this is because when the vertical dimension of the outlet is about 50 mm, the fixed louvers 11
When the size of the outlet in the vertical direction is about 150 mm, three fixed louvers may be used, and the ratio is a guide as long as the object of the present invention is achieved. It may be something. Also,
The heat source is a combustion device that also uses a burner for burning fuel, but this may be a heat source such as an electric heater.

The outlet 10 is formed in a part of the width of the main body case 1, and the fixing louvers 11, 12 are formed to be almost full in the width of the main body case 1. The upper louvers 11 and 12 have a configuration in which the width of the upwardly inclined portion is made longer in the upper stage than in the lower stage, and the outlet 10 is divided into upper and lower portions by the fixed louvers 11 and 12.
, The interval width on the downstream side is gradually reduced from the top, the interval on the burner section 6 side of the fixed louvers 11 and 12 is the largest at the middle stage, and the discharge of the fixed louvers 11 and 12 is the largest. The end on the outlet side is rounded downward and folded back, and the end surface of the fixed louvers 11, 12 is smooth so that the lower surface side of the cross-sectional shape of the fixed louvers 11, 12 is smooth so that the lower surface side does not form stagnation. And the configuration in which the ends of the fixed louvers 11 and 12 on the discharge outlet side protrude by 4 mm or more from the main body case 1 and the protruding amount is within the outline of the placing table 1A has been described at the same time. This may be configured separately, and the configuration of each unit may be any configuration as long as the object of the present invention is achieved.

[0036]

As described above, the warm air heater of the present invention is described.
In the configuration, the width of the downstream side of the outlet divided vertically by the fixed louver is gradually reduced from the top, and the space on the upstream side, which is the heat source side of the fixed louver, is the largest in the middle stage. , The end of the fixed louver on the discharge outlet side is rounded downward and folded back,
The lower surface side of the fixed louvers Ru configuration entirety in connected to the lower surface side of the outline of the louver sectional shape its end face so as not to create stagnation becomes gentle.

As a result, the resistance of the swirl generated due to the decrease in the end of the fixed louver is almost eliminated, and the warm air flows along the fixed louver so that the warm air can be discharged smoothly from the outlet. There is no resistance component that blocks the cross-sectional area, and the air volume increases. In addition, the flow rate of the indoor air flow from the blower is not weakened, but the warm air reaches far, so that the heating effect is increased, and at the same time, the interval between the fixed louvers is widened, so that cleaning becomes easy.

Further, when the device is viewed from the front, discoloration of built-in components such as the metallic luster in the outlet and the high temperature of the combustion tube becomes difficult to see, and the appearance is improved.

Further, a large amount of heat from the heat source and the indoor air flow flow into the middle stage having the widest interval on the upstream side serving as the heat source portion of the fixed louver. The air is discharged vigorously, the temperature unevenness of the warm air is reduced, and the warm air reaches far away, so that the heating effect is further improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a hot air heater according to an embodiment of the present invention.

FIG. 2 is a front view of the hot air heater.

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

FIG. 4 is a cross-sectional view of a conventional hot air heater.

FIG. 5 is a sectional view of a main part of the hot air heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 6 Burner part 8 Blower 9 Duct 10 Outlet 11 Fixed louver 12 Fixed louver

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Tomoya Kawaguchi 1006 Kadoma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Motojun Shintani 1006 Kadoma Kadoma Kadoma City, Osaka Matsushita Electric Industrial (72) Inventor Kunio Kanda 1006 Kadoma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Toru Harada 1006 Odaka Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. Tetsuo (56) References JP-A-5-340611 (JP, A) JP-A-3-169317 (JP, A) JP-A 2-134455 (JP, U) JP-A 61-74050 (JP, U) Japanese Utility Model Showa 63-22895 (JP, U) Japanese Utility Model Showa 62-147883 (JP, U) Japanese Utility Model Showa 5-69560 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24H 9/02 302 F24H 3/04 301

Claims (3)

(57) [Claims] 1. A main body case and provided in the main body case.
Heat source, and a blower for supplying hot air to the heat source,
An outlet for discharging warm air from the blower;
A fixed louver disposed at the outlet.
The bath inclines the upstream side near the heat source upward and
The downstream side, which is the wind discharge side, is almost horizontal and slightly upward
1 as a slender wide plate that is formed smoothly
And three or more are divided vertically by the fixed louver.
The width of the gap on the downstream side of
Hot air heater. 2. A main body case and a main body case.
Heat source, the heat of this heat source and the indoor airflow from the blower.
A duct that mixes hot air and exhausts hot air from the duct.
An outlet to be discharged, and a fixed loop disposed at the outlet.
And the fixed louver is located on the upstream side close to the heat source.
And the downstream side, which is the hot air discharge side,
Smoothly formed so that it is slightly horizontal and slightly upward
Two or three rope-shaped wide plates are arranged, and
Downstream of the outlet divided vertically by the fixed louver
Reduce the interval width in order from the top and
The space on the upstream side that is the heat source side of the
Sea-warm air heater. 3. Two fixed louvers are provided.
Discharge of the outlet divided vertically by the fixed louver
The intervals on the exit side are small in the order of 3 to 2 to 1 in order from the top.
3. A hot air heater according to claim 1 or 2, wherein
Machine.