JP5369722B2 - Blowing structure of hot air heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air blowing structure for a warm air heater preventing generation of smell during operation. <P>SOLUTION: An air blowing course 2 is provided which communicates a front part with a back part of a frame body 1. An indoor convection fan 3 and a warm air blowout port 4 are provided on the back face side and front face side of the frame body 1 in the air blowing course 2, respectively, and a combustion chamber 6 of a burner 5 is arranged within the air blowing course 2. A wind block body 7 for blocking wind of the indoor convection fan 3 is mounted to the periphery of the combustion chamber 6, and the wind block body 7 includes a back face plate 7a positioned between the combustion chamber 6 and the indoor convection fan 3, side plates 7b extended from both ends of the back plate 7a toward the front side of the frame body 1 and a top plate 7c formed at upper ends of the back face plate 7a and the side plates 7b. Wind of the indoor convection fan 3 hits the back face plate 7a of the wind block body 7, is sent to a clearance 8 between the air block body 7 and the air blowing course 2, exchanges heat with the combustion chamber 6 and the wind block body 7 which becomes high temperature by heat of combustion gas to become warm air, and is blown out from the warm air blowout port 4. Thus, the temperature of the combustion chamber 6 surrounded by the wind block body 7 and the combustion gas is not lowered, and generation of smell can be prevented. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a structure of an air passage of a hot air heater.

  2. Description of the Related Art Conventionally, a hot air heater of a type that discharges combustion exhaust into a room is provided with a burner in a frame, a combustion blower that sends combustion air to the burner, and a pump that supplies fuel to the burner. The amount of combustion of the burner is changed by changing the amount of fuel supplied and the amount of combustion air sent by the combustion blower.

Also, the frame body is provided with an air passage that communicates the back portion and the front portion, and an indoor convection fan that blows indoor air is attached to the back portion of the frame body that becomes the inlet of the air passage, and the front surface of the frame body Is provided with a hot air outlet from which air sent to the air passage is blown. The combustion chamber provided in the upper part of the burner is arranged in the air passage, and the air blown into the air passage by the indoor convection fan is mixed with the high-temperature combustion gas discharged from the combustion chamber, or Heat is exchanged with the combustion chamber or the like, and the temperature becomes high, and the air is blown out from the hot air outlet on the front surface of the frame to be heated (see Patent Document 1).
JP-A-7-43022

  As described above, a warm air heater that discharges combustion gas into the room may become unstable during ignition and extinguish, and may generate bad odor due to incomplete combustion gas, but the combustion state is stable. It has been thought that no foul odors that would cause problems during normal combustion have occurred, but in recent years there have been increasing opportunities for use in highly airtight rooms, and complaints due to odors have also occurred during normal combustion. As a cause of this, it has been found that the cool wind of the indoor convection fan directly hits the combustion chamber or the combustion gas and the odor is likely to be generated when the temperature of the combustion gas decreases.

  Such combustion odors may occur even when the burner is completely burned, and some countermeasures have been required. The present invention proposes a structure of an air passage for a warm air heater that reduces the odor during combustion by preventing the temperature of the combustion chamber and the combustion gas from being lowered by the wind of the indoor convection fan.

The present invention solves the above-described problem. In the frame body 1, an air passage 2 that communicates the back portion and the front portion of the frame body 1 is provided, and an indoor convection fan is provided on the back side of the frame body 1 of the air passage 2. 3, a hot air outlet 4 is provided on the front side of the frame 1 of the air passage 2, a combustion chamber 6 of the burner 5 is disposed in the air passage 2, and the air is blown into the air passage 2 by the indoor convection fan 3. In the hot air heater which the indoor air becomes hot and blows out into the room through the hot air outlet 4, the wind of the indoor convection fan 3 sent to the combustion chamber 6 is blocked around the combustion chamber 6 in the air blowing path 2. A wind shield 7 is attached, and the wind shield 7 has a back plate 7 a positioned between the combustion chamber 6 and the indoor convection fan 3, and a tip continuously from both ends of the back plate 7 a with the tip from the combustion chamber 6 to the warm air outlet 4 side. And a top plate 7c that covers the upper part of the combustion chamber 6 continuously from the upper end of the back plate 7a and the side plate 7b. While, the openings 9 provided on the upper end of the rear plate 7a, the wind of the indoor convection fan 3 is directed from the interval 8 between Futei 7 shielding the inner wall of the air passage 2 in the temperature air outlet 4, the combustion while the barrier Futei 7 and the heat exchanger becomes hot by the combustion heat of the chamber 6, the air flowing into the upper portion in the shield Futei 7 from the opening 9, the top plate at a position higher than the upper end position of the combustion chamber 6 The combustion gas that flows along the lower surface of 7c and rises from the combustion chamber 6 is directed to the hot air outlet 4 while being guided .

Further, a wind shield 7 for blocking the wind of the indoor convection fan 3 sent to the combustion chamber 6 is attached around the combustion chamber 6 in the air passage 2, and the wind shield 7 is formed between the combustion chamber 6 and the indoor convection fan 3. The back plate 7a located between the side plate 7b, the side plate 7b continuously extending from both ends of the back plate 7a and reaching the warm air outlet 4 from the combustion chamber 6, and the combustion chamber 6 continuously from the upper ends of the back plate 7a and the side plate 7b. together constituting the upper top plate 7c that covers the said opening 9 provided on the upper end of the back plate 7a, the side plate 7b at a tip with warm air blowing port 4 side of the combustion chamber 6 in the center of the air passage 2 air guiding portion 7e is formed by the inclined portion facing the wind of the indoor convection fan 3 toward the gap 8 between the Futei 7 shielding the inner wall of the air passage 2 in the temperature air outlet 4, of the combustion chamber 6 the shield Futei 7 and thereby heat exchange becomes hot by the combustion heat, or the opening 9 The air flowing into the upper part of the wind shield 7 flows along the lower surface of the top plate 7c at a position higher than the upper end position of the combustion chamber 6, and induces the combustion gas rising from the combustion chamber 6 to generate the temperature. The air guide 7e is directed to the air outlet 4 and the air guide 7e guides the warm air flowing along the side plate 7b to the center of the hot air outlet 4 so that the hot air can be blown out from the front of the frame body 1. Is.

  Further, an attachment piece 7d is formed outwardly on the side plate 7b and the back plate 7a of the wind shield 7, and the attachment piece 7d abuts against the side wall 2b of the air passage 2 and the inner wall of the back plate 2a, respectively. By positioning the air body 7 in the air passage 2 and forming the space 8 between the air passage 2 and the wind shield 7, the space 8 between the air passage 2 and the wind shield 7 can be made uniform, and the room sent to the space 8. Since the wind of the convection fan 3 becomes uniform, uniform warm air can be blown out from the warm air outlet 4.

  In the present invention, a wind shield 7 that blocks the wind of the indoor convection fan 3 is disposed around the combustion chamber 6 disposed in the air passage 2 of the frame 1, and the wind of the indoor convection fan 3 blows off the outer wall of the wind shield 7. The air from the indoor convection fan 3 is prevented from directly hitting the combustion chamber 6 and the combustion gas from the interval 8 with the inner wall of the path 2 toward the hot air outlet 4, and the air flow sent to the interval 8 is combusted. Since the configuration is such that heat is exchanged with the windshield 7 that is heated by the heat of the chamber 6 and the combustion gas, and the hot air is blown into the room from the hot air outlet 4, the temperature of the combustion chamber 6 and the combustion gas is lowered. It was possible to maintain the temperature at a high temperature and to prevent the generation of odor during normal combustion.

  In addition, since the high-temperature combustion gas released from the combustion chamber 6 tends to collect in the upper portion of the wind shield 7, in the present invention, an opening 9 is provided in the upper portion of the rear plate 7 a of the wind shield 7, 2, part of the air blown into the air flows into the wind shield 7 through the opening 9 and flows between the upper portion of the combustion chamber 6 and the top plate 7 c of the wind shield 7 toward the hot air outlet 4. The combustion gas released into the wind body 7 is also directed toward the warm air outlet 4, so that the combustion gas does not stay in the wind shield 7, and an abnormally high temperature of the wind shield 7 can be prevented. Further, since the air flow flowing into the wind shield 7 from the opening 9 is only a part of the wind of the indoor convection fan 3 and the amount of air is small, the temperature of the combustion gas is not lowered by this air flow, and the warm air outlet 4 Can be guided to.

  Further, the side plate 7b and the back plate 7a of the wind shield 7 are formed with attachment pieces 7d facing outward. When the wind shield 7 is attached into the air passage 2, the attachment piece 7d is the side plate of the air passage 2. 2b and the inner wall of the back plate 2a are brought into contact with each other, so that the wind shield 7 can be easily positioned at a predetermined position of the air passage 2, and the distance 8 between the wind shield 7 and the air passage 2 can be made uniform. Thus, the air flow sent from the indoor convection fan 3 to the interval 8 becomes uniform, and uniform hot air can be blown out from the entire hot air outlet 4 with little temperature unevenness and air volume difference.

  Further, since the burner 5 and the air passage 2 are arranged close to one side of the frame body 1, the warm air blown out from the warm air outlet 4 tends to concentrate on one side of the frame body 1. In the present invention, an air guiding portion 7e is provided at the front edge of the side plate 7b of the wind shield 7 located on the side plate side of the frame 1 with the tip directed toward the center of the air passage 2 on the warm air outlet 4 side of the combustion chamber 6. Since the air guide 7e guides the warm air in the air passage 2 flowing along the side plate 7b to the center of the warm air outlet 4, the warm air is not concentrated on one side of the frame 1, and the warm air outlet The hot air can be blown out from the entirety of 4 to the front of the frame 1.

  In the embodiment shown in the figure, 1 is a frame of a hot air heater, 5 is a burner constituting a vaporizing section installed in the frame 1, 10 is a combustion blower for supplying combustion air to the burner 5, and 11 is a frame. A cartridge tank to be mounted in the body 1, 12 is an oil pan that is supplied with fuel from the cartridge tank 11, 13 is a pump that is mounted on the oil pan 12 and supplies fuel to the burner 2, and 6 is located above the burner 5. It is a combustion chamber in which vaporized fuel can be burned completely.

  The burner 5 is not only a fuel vaporizer but also a pot type oil combustor capable of burning a part of the vaporized fuel, and 14 is a part of the fuel vaporized and partially vaporized by having a large number of air holes in the side wall. 14a is an auxiliary combustion member installed in the pot 14, 15 is a preheating heater in which a heat generating part is located in the pot 14, and the fuel supplied from the pump 13 is a pot constituting the burner 5. The fuel vaporized in the pot 14 that has been sent to 14 and heated to a high temperature by the preheating combined heater 15 is ignited by the preheating combined heater 15. The combustion air sent to the burner 5 by the combustion blower 10 is supplied into the pot 14 from the air hole on the side wall of the pot 14, and the vaporized and ignited fuel gas receives the air sent from the combustion blower 10. Then, mixing is performed while partly burning, and complete combustion is performed in the combustion chamber 6 above the burner 2.

  2 is an air passage arranged so as to penetrate the front and rear from the back surface to the front surface in the frame body 1, 16 is an air inlet provided on the back surface of the frame body 1 connected to the air passage 2, A hot air outlet provided on the front surface of the frame 1 constituting the outlet, 3 an indoor convection fan provided on the rear surface of the frame 1 on the air suction port 16 side of the air passage 2, and 17 a hot air outlet 4 of the air passage 2. It is a louver arranged on the side to make the flow and direction of the wind uniform. The combustion chamber 6 is arranged in the air passage 2, and the high-temperature combustion gas discharged from the upper portion of the combustion chamber 6 is supplied to the air passage 2. Sent in. The room air blown into the air passage 2 from the air suction port 16 by the indoor convection fan 3 is mixed with the combustion gas discharged from the combustion chamber 6 to become high-temperature air, and the louver 17 of the hot air outlet 4 It blows out in front of the frame body 1 through.

The warm-air heater is uncomfortable when it is ignited and extinguished, causing incomplete combustion gas to be generated and with a foul odor. It was thought that there was no occurrence of such a bad odor.
However, recently, even when the burner in normal combustion is completely burned, complaints due to odor may occur. As a cause of this, conventional hot air heaters directly use the wind of the indoor convection fan directly in the combustion chamber or combustion gas Therefore, it has been found that when the combustion gas is cooled by the low-temperature wind of the indoor convection fan and the temperature of the combustion gas is lowered, odor is likely to be generated.

  The present invention solves the above-mentioned problems. Reference numeral 7 denotes a wind shield disposed so as to surround the combustion chamber in the air passage 2, and 7a denotes a wind shield 7 disposed between the indoor convection fan 3 and the combustion chamber 6. The back plate 7b is a side plate of the wind shield 7 extending from both ends of the back plate 7a of the wind shield 7 in the direction of the hot air outlet 4, and 7c is a top plate continuous from the back plate 7a of the wind shield 7 and the upper end of the side plate 7b. The front edges of the side plate 7b and the top plate 7c reach the warm air outlet 4 side from the combustion chamber 6, and the wind shield 7 surrounds the back, sides, and upper portion of the combustion chamber 6 and opens forward. The wind of the indoor convection fan 3 blown into the air passage 2 is blocked by the wind shield 7 so that the wind of the indoor convection fan 3 does not directly hit the combustion chamber 6 and the combustion gas.

  2b is a side plate of the air passage 2, 2c is a top plate of the air passage 2, 8 is a side plate 7b of the wind shield 7 and the side plate 2b of the air passage 2, and the top plate 7c of the wind shield 7 and the top of the air passage 2. This is an interval formed with the plate 2c, and the wind of the indoor convection fan 3 blown into the air passage 2 is divided into the side portion and the upper portion of the wind shield 7 on the back plate 7a of the wind shield 7, and the interval 8 It goes to the warm air outlet 4 on the front surface of the frame body 1 through.

  On the other hand, the combustion gas released from the upper part of the combustion chamber 6 into the internal space of the wind shield 7 is blocked by the wind shield 7 and the wind of the indoor convection fan 3 is not directly applied to the combustion gas. The combustion gas is maintained at a high temperature, and the wind shield 7 is also heated by the heat of the combustion chamber 6 and the combustion gas. Then, the wind of the indoor convection fan 3 exchanges heat with the wind shield 7 that has become hot when it passes through the interval 8 to increase the temperature, and the hot air is blown out from the warm air outlet 4 to the front of the frame body 1. Can do.

  The combustion gas in the wind shield 7 is directed from the front opening of the wind shield 7 toward the warm air outlet 4 and is then mixed with the wind of the indoor convection fan 3 that has passed through the interval 8 and blown out together. Since the temperature of the wind of No. 3 is high when passing through the interval 8, the temperature of the combustion gas does not decrease, the combustion gas can maintain a high temperature, and odor is generated during normal combustion. The fear is gone.

  Further, since the combustion gas released from the upper part of the combustion chamber 6 tends to accumulate in the upper part of the wind shield 7, the top plate 7 c of the wind shield 7 tends to become high temperature. In the embodiment of the present invention, 9 is an opening formed in the upper part of the back plate 7 a of the wind shield 7, and a part of the wind of the indoor convection fan 3 blown into the air passage 2 passes through the opening 9 in the wind shield 7. The air flows into the upper part, is sent between the combustion chamber 6 and the top plate 7c, forms an air flow toward the hot air outlet 4 along the lower surface of the top plate 7c, and the combustion gas released from the combustion chamber 6 is this Since it goes to the warm air outlet 4 by the flow of air, the temperature rise in the upper part of the wind shield 7 can be suppressed.

In the above configuration, since the air flow sent from the opening 9 to the wind shield 7 has a small air volume and is not directly blown onto the combustion chamber 6 or the combustion gas, the combustion gas is discharged from the hot air outlet without greatly reducing the temperature of the combustion gas. 4 can be sent to 4 and does not generate odor.
3, the opening 9 of the wind shield 7 is formed by cutting, 9a is a bent piece formed by cutting, and the bent piece 9a is formed from the lower part of the opening 9. Inclined toward the top plate 7 c in the wind shield 7, functions as a control plate that controls the flow of air flowing into the wind shield 7 from the opening 9, and controls the amount of air flowing into the wind shield 7 from the opening 9 In addition, the air flow can be guided toward the top plate 7c of the wind shield 7.

  By the way, if the gap 8 between the wind shield 7 and the air passage 2 is greatly different on the left and right sides of the wind shield 7, there is a difference in the amount of air flow passing through the gap 8, the flow velocity, and the temperature. There is a possibility of variations in wind temperature and air volume.

7d is an attachment piece formed outward from the lower end of the back plate 7a and the side plate 7b of the wind shield 7, 2a is a back plate of the air passage 2, and the wind shield 7 is a bottom plate of the air passage 2 by this attachment piece 7d. The mounting piece 7d formed on the side plate 7b of the wind shield 7 is in contact with the side plate 2b of the air passage 2, and the mounting piece 7d formed on the back plate 7a of the wind shield 7 is the back plate of the air passage 2. It is positioned at a predetermined position in contact with 2a, and can be easily attached at the correct position.
In this way, the windshield 7 is reliably positioned by the mounting piece 7d, so that the distance 8 between the windshield 7 and the air passage 2 becomes uniform, and the amount and speed of warm air flowing through the gap 8 can be made uniform. Uniform hot air can be blown out from the hot air outlet 4.

  In addition, as shown in FIG. 2, in the hot air heater, in order to store the cartridge tank 11 on one side in the frame body 1, the air passage 2 is arranged close to one side of the frame body 1. The warm air outlet 4 is configured to be wide on the side of the frame 1 even if it is brought to one side in the frame 1. In this configuration, since the warm air blown out from the warm air outlet is likely to concentrate on one side of the frame 1 in which the air passage is disposed, a structure in which the warm air blows out from the entire hot air outlet is desired.

As a countermeasure against this, 7e is an air guiding portion formed by an inclined portion with the tip formed from the end portion of the side plate 7b of the wind shield 7 positioned on the side wall side of the frame body 1 toward the center of the air passage 2. The part 7e is located on the warm air outlet 4 side of the combustion chamber 6, and the warm air in the wind shield 7 flowing along the side plate 7b forms an air flow toward the center of the hot air outlet 4 by the air guiding part 7e. To do.
Reference numeral 18 denotes a guide plate formed from the side plate 2b of the air passage 2 located on the center side of the frame 1 toward the end of the hot air outlet 4 that does not face the air passage 2, and 19 denotes the hot air outlet 4 and the guide plate 18. The warm air flowing through the space 8 between the air passages 2 on the center side of the frame 1 is blown out from the warm air outlet 4 while facing the front of the air space 19.
In this way, the air guide portion 7e and the air blowing interval 19 allow hot air to be blown out from the vicinity of the center of the hot air outlet 4 to the front surface of the frame body 1 without the air passage 2, and on the side wall side of the frame body 1 The warm air flowing through the gap 8 in the air passage 2 is blown out from the warm air outlet 4 directly to the front of the frame 1, so that the warm air can be blown out from the entire hot air outlet 4 toward the front of the frame 1. It became.

It is sectional drawing showing the front of the oil combustor which shows the Example of this invention. It is a cross-sectional view of an oil combustor showing an embodiment of the present invention. It is sectional drawing showing the side of the oil combustor which shows the Example of this invention.

DESCRIPTION OF SYMBOLS 1 Frame 2 Air passage 2a Back plate 2b Side plate 3 Indoor convection fan 4 Warm air outlet 5 Burner 6 Combustion chamber 7 Wind shield 7a Back plate 7b Side plate 7c Top plate 7d Mounting piece 7e Air guidance part 8 Spacing 9 Opening

Claims (3)

In the frame (1), an air passage (2) communicating the back and front of the frame (1) is provided, and an indoor convection fan (3) is provided on the back side of the frame (1) of the air passage (2). ), A hot air outlet (4) is provided on the front side of the frame (1) of the air passage (2), and a combustion chamber (6) of the burner (5) is disposed in the air passage (2). In the hot air heater, the indoor air blown into the air passage (2) by the indoor convection fan (3) becomes a high temperature and is blown into the room from the hot air outlet (4).
A wind shield (7) for blocking the wind of the indoor convection fan (3) sent to the combustion chamber (6) is attached around the combustion chamber (6) in the air passage (2), and the wind shield (7) A back plate (7a) located between the combustion chamber (6) and the indoor convection fan (3), and a tip continuously from both ends of the back plate (7a) from the combustion chamber (6) to the hot air outlet (4) a side plate (7b) that reaches the side, as well as configuration out back plate (7a) and the top plate of the upper end from the continuously cover the upper part of the combustion chamber (6) of the side plate (7b) and (7c),
An opening (9) is provided at the upper end of the back plate (7a),
The wind of the indoor convection fan (3) towards the interval (8) the temperature air blowing port (4) between the inner wall and the shielding Futei (7) of the air passage (2), combustion of the combustion chamber (6) thereby heat exchange with the barrier Futei (7) having a high temperature by heat,
Air flowing into the upper portion of the wind shield (7) from the opening (9) flows along the lower surface of the top plate (7c) at a position higher than the upper end position of the combustion chamber (6), and the combustion chamber A blowing structure of a hot air heater, wherein the combustion gas rising from (6) is guided to the hot air outlet (4) . In the frame (1), an air passage (2) communicating the back and front of the frame (1) is provided, and an indoor convection fan (3) is provided on the back side of the frame (1) of the air passage (2). ), A hot air outlet (4) is provided on the front side of the frame (1) of the air passage (2), and a combustion chamber (6) of the burner (5) is disposed in the air passage (2). In the hot air heater, the indoor air blown into the air passage (2) by the indoor convection fan (3) becomes a high temperature and is blown into the room from the hot air outlet (4).
A wind shield (7) for blocking the wind of the indoor convection fan (3) sent to the combustion chamber (6) is attached around the combustion chamber (6) in the air passage (2), and the wind shield (7) A back plate (7a) located between the combustion chamber (6) and the indoor convection fan (3), and a tip continuously from both ends of the back plate (7a) from the combustion chamber (6) to the hot air outlet (4) a side plate (7b) that reaches the side, as well as configuration out back plate (7a) and the top plate of the upper end from the continuously cover the upper part of the combustion chamber (6) of the side plate (7b) and (7c),
An opening (9) is provided at the upper end of the back plate (7a), and the tip of the side plate (7b) is directed to the warm air outlet (4) side of the combustion chamber (6) toward the center of the air passage (2). An air guiding portion (7e) is formed by the inclined portion,
The wind of the indoor convection fan (3) towards the interval (8) the temperature air blowing port (4) between the inner wall and the shielding Futei (7) of the air passage (2), combustion of the combustion chamber (6) thereby heat exchange with the barrier Futei (7) having a high temperature by heat,
Air flowing into the upper portion of the wind shield (7) from the opening (9) flows along the lower surface of the top plate (7c) at a position higher than the upper end position of the combustion chamber 6, and the combustion chamber (6 ) From the combustion air rising to the warm air outlet (4), and the air guiding portion (7e) causes the warm air flowing along the side plate (7b) to flow in the center of the hot air outlet (4). blowing structure of the warm air heater you characterized by inducing the. The shield attachment piece (7d) formed toward the outer side in Futei (7) side plate (7b) and the rear panel (7a), side plates (2b of the mounting piece (7d) is the airflow path (2) ) and the rear panel (air passage the barrier Futei (7) respectively to the inner wall in contact with the 2a) (2) is positioned within said air passage (2) wherein the barrier Futei (7) spacing (8) The blower structure for a hot-air heater according to claim 1 or 2 , wherein

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