JP7364456B2 - heating device - Google Patents

Description

The present invention relates to a heating device that generates hot air of 100° C. to 1000° C. with a simple structure, and particularly to a heating device that can rapidly generate hot air while suppressing power consumption.

When hot water of around 90°C is required in production equipment such as factories, normally steam at around 130°C is generated in a boiler, and the temperature of the steam is reduced to hot water using a temperature control tank, etc. This produced hot water around 90°C. When using a boiler, the annual fuel cost is in the order of 10 million yen, even if it is a small reflux boiler.

Therefore, attempts have been made to generate hot water using near-infrared rays. For example, Patent Document 1 discloses a fluid heating device for heating a fluid such as air flowing in a predetermined direction by taking advantage of the advantageous characteristics of a near-infrared lamp for metal heating. In Patent Document 1, since air can be heated as the fluid, the heated air can be used to heat the liquid.

Registered utility model No. 3174458

The fluid heating device disclosed in Patent Document 1 only heats flowing air slowly, and cannot heat it to a high temperature all at once. Moreover, since near-infrared rays are directly exposed to the fluid, the rate of heat dissipation is high, and mid-infrared rays, which perform radiant heating, have higher heating efficiency.

The present invention has been made in view of the above problems, and aims to provide a heating device that can heat air with high efficiency in a short time without using large-scale equipment such as a boiler. purpose.

In order to achieve the above object , a heating device according to the present invention is a heating device that heats air using a heater , in which the heater inserts an electric heating material formed into a coil shape into a cylindrical ventilation pipe. , a heating device in which one or more of the ventilation pipes are installed in a housing, one end of the ventilation pipe being open to the exhaust port side in the housing, and the other end being open to the air supply port side in the housing. Air is supplied from the air supply port, and while the supplied air passes from the other end of the ventilation pipe to one end, it is heated by the heating of the electric heating material , and is discharged from the exhaust port to the outside. The ventilation pipe is configured to be discharged, and the ventilation pipe is fixed through a partition wall that divides a space within the housing, and the ventilation port is provided for each set of two ventilation pipes. The electric heating materials are connected to each other at one end of the ventilation pipe, which is the space side, and connected to a power source at the other end of the ventilation pipe, which is the space side where the air supply port is provided. do.

In the above invention, the air supplied from the air supply port is heated to a high temperature while passing through the ventilation pipe containing an electric heating material (for example, a Kanthal member with a relatively large calorific value). This makes it possible to heat supplied air (outside air) with high efficiency without using large equipment such as a boiler , and exhaust hot air of up to around 1000℃ depending on the number of heaters . It becomes possible. In addition, the ventilation pipes are fixed by penetrating the partition wall that divides the space inside the housing, and the ventilation pipes are set in pairs, and one end of the ventilation pipe, which is the space side where the exhaust port is provided, is heated by electric heat. Since the materials are connected to each other and the power source is connected at the other end of the ventilation pipe, which is the space side where the air supply port is installed, the lead wires connecting the electric heating materials and the power source are Damage can be avoided and hot air can be stably and continuously supplied.

Further, in the heating device according to the present invention, it is preferable that the ventilation pipe is formed of a member having heat resistance against high temperatures.

In the above invention, by forming the ventilation pipe from a member having heat resistance against high heat, such as quartz glass or a ceramic material, it becomes possible to stably and continuously supply hot air.

Further, in the heating device according to the present invention, a heat exchange member is provided on the inner surface of the casing, and the air supplied from the air supply port is heated by radiant heat of the heater while being guided to the other end of the ventilation pipe. It is preferable that

In the above invention, a heat exchange member is provided on the inner surface of the casing, and since the air supplied from the air supply port is heated by the radiant heat of the heater while being guided to the other end of the ventilation pipe, the amount of heat of the heater is This makes it possible to reduce power consumption.

Further, in the heating device according to the present invention, the heat exchange member includes a fin-like member through which air can pass in the same direction as the longitudinal direction of the ventilation pipe, and the heat exchange member is arranged on an inner peripheral surface of the housing. It is preferable that they be provided along the same line.

In the above invention, the heat exchange member includes a fin-like member through which air can pass in the same direction as the longitudinal direction of the ventilation pipe, and the heat exchange member is provided along the inner peripheral surface of the housing. It becomes possible to reliably heat the air supplied from the air supply port with the radiant heat of the heater while being guided to the other end of the ventilation pipe.

Further, it is preferable that the heating device according to the present invention includes a quartz column into which the heater can be inserted, and that the heater is installed inside the housing with the heater inserted into the quartz column.

The invention described above is equipped with a quartz column into which a heater can be inserted, and the heater is installed inside the casing with the heater inserted into the quartz column, making it difficult for the heater's heat to diffuse. Since it is difficult to expand, it is possible to securely fix the ventilation pipe.

Further, in the heating device according to the present invention, it is preferable that two quartz plates, front and rear, through which the heater can pass are attached, and the heater is fixed to the quartz plates by passing through them.

In the above invention, two quartz plates are installed on the front and back through which the heater can pass, and since the heater is passed through and fixed to the quartz plates, the quartz plates are difficult to thermally expand, and the ventilation pipe can be reliably connected. It becomes possible to stick.

Further, in the heating device according to the present invention, it is preferable that the outer peripheral portion of the casing is covered with a heat insulating material.

In the above invention, since the outer periphery of the casing is covered with a heat insulating material, it is possible to avoid thermal damage such as burning around the heating device, which is likely to occur due to heating of the casing itself. becomes possible.

Further, in the heating device according to the present invention, it is preferable that the casing has a double structure and cool air is allowed to flow between the casings.

In the above invention, the casing is configured to have a double casing, and the casing can be cooled by flowing cold air between the casings. It is possible to prevent thermal damage such as burns from occurring.

According to the above invention, the air supplied from the air supply port is heated to a high temperature while passing through the ventilation pipe containing the Kanthal member that generates a relatively large amount of heat. This makes it possible to heat supplied air (outside air) with high efficiency without using large equipment such as a boiler, and it is possible to exhaust hot air of up to around 1000℃ depending on the number of Kanthal heaters. becomes.

FIG. 1 is a schematic diagram showing the configuration of a heating device according to Embodiment 1 of the present invention. FIG. 2 is a sectional view taken along line AA in FIG. 1 of the kanthal heater of the heating device according to Embodiment 1 of the present invention. 1 is a plan view of a heating device according to Embodiment 1 of the present invention. 1 is a schematic diagram showing the configuration of a heating system using a heating device according to Embodiment 1 of the present invention. 3 is a graph showing measured values of temperature rise of exhaust gas of a heating system using the heating device according to Embodiment 1 of the present invention. FIG. 4 is an exemplary cross-sectional view taken along the line BB in FIG. 3 of the heating device according to Embodiment 1 of the present invention. FIG. 4 is another illustrative cross-sectional diagram of the BB cross section in FIG. 3 of the heating device according to Embodiment 1 of the present invention. FIG. 2 is a schematic diagram showing the configuration of a heating device according to Embodiment 2 of the present invention. FIG. 7 is a schematic diagram showing only fixed portions of a plurality of Kanthal heaters of a heating device according to Embodiment 2 of the present invention. FIG. 7 is another schematic diagram showing only fixed portions of a plurality of Kanthal heaters of the heating device according to Embodiment 2 of the present invention. FIG. 6 is a two-sided view of a heat exchange member of a heating device according to Embodiment 2 of the present invention. FIG. 7 is a perspective view showing an example of a method for joining heat exchange members of a heating device according to Embodiment 2 of the present invention. It is a schematic sectional view of the state where the heat exchange member of the heating device based on Embodiment 2 of this invention is joined. FIG. 2 is a schematic diagram showing the configuration of a heat exchange member of a heating device according to Embodiment 2 of the present invention. FIG. 7 is a schematic diagram showing a method of arranging heat exchange members of a heating device according to Embodiment 2 of the present invention.

Hereinafter, a heating device according to an embodiment of the present invention will be described in detail based on the drawings. The following embodiments do not limit the invention described in the claims, and all combinations of characteristic items described in the embodiments are essential to the solution. Needless to say, there is no limit.

Further, the present invention can be implemented in many different modes, and should not be construed as being limited to the contents described in the embodiments. The same elements are given the same reference numerals throughout the embodiments.

According to the embodiment of the present invention, the air supplied from the air supply port is heated to a high temperature while passing through the ventilation pipe containing the Kanthal member with a relatively large calorific value, so that it can be used in large-sized boilers etc. It is possible to heat the supplied air (outside air) with high efficiency without using any equipment, and it is possible to exhaust hot air of 400°C or higher, and at most around 1000°C.

(Embodiment 1)
FIG. 1 is a schematic diagram showing the configuration of a heating device according to Embodiment 1 of the present invention. As shown in FIG. 1, in the heating device 1 according to the first embodiment, a partition wall 20 is provided in a housing 10 to divide the space into two spaces. A plurality of Kanthal heaters 30 using Kanthal members 31 manufactured by KANTHAL (registered trademark) are provided so as to be fixed to the partition wall 20 .

The Kanthal member 31 is an iron-Fe-chromium-Cr-aluminum-Al-cobalt-Co alloy, and has Fe as its main component, and other contents are 20% Cr, 15% Al, and 2% Co. As a heating wire, nichrome wire is used for applications up to around 1000°C, but Kanthal member 31 has excellent oxidation resistance and can be used up to around 1250°C.

The Kanthal heater 30 has a Kanthal member 31 formed into a coil shape, and is inserted along the inner periphery of a heat-resistant ventilation pipe 32. As the ventilation tube 32, a quartz tube with high heat resistance is preferable. One end of the ventilation pipe 32 is open to the exhaust port 50 provided in the casing 10, and the other end is open to the air supply port 40 in the casing 10.

Note that it is preferable to use a metal casing such as stainless steel, which has excellent heat resistance, as the casing 10. However, the housing 10 is not particularly limited to a metal housing, and may be formed of thick quartz glass or the like so that the housing 10 itself has heat insulating properties.

FIG. 2 is a sectional view taken along line AA in FIG. 1 of the kanthal heater 30 of the heating device 1 according to the first embodiment of the present invention. As shown in FIG. 2, in the Kanthal heater 30 according to the first embodiment, a Kanthal member 31 formed in a coil shape is inserted along the inner circumference of a cylindrical ventilation pipe 32. As shown in FIG.

Returning to FIG. 1, outside air is supplied from the air supply port 40. Since the housing 10 has the partition wall 20, the supplied outside air can only be exhausted from the ventilation pipe 32 of the Kanthal heater 30.

The outside air is heated by the Kanthal member 31 while passing through the ventilation pipe 32 . Since the ventilation pipe 32 penetrates the partition wall 20, the heated high-temperature exhaust gas is guided to the space in which the exhaust port 50 of the housing 10 is provided, and is discharged to the outside from the exhaust port 50.

The space inside the housing 10 where the high-temperature exhaust gas that has passed through the partition wall 20 stays becomes extremely high temperature. If the Kanthal heater 30 is installed alone, the lead wire 60 connected to the power source must be installed in a space where high-temperature exhaust gas remains. In this case, there is an increased risk of thermal damage to the power supply itself due to heat conduction through the lead wire 60 due to high-temperature exhaust gas, which is not preferable.

Therefore, by using a pair of Kanthal heaters 30, the lead wires 60 connected to the power source can be provided in the space of the housing 10 filled with supplied outside air, which is relatively low temperature. However, it is preferable that the lead wires 70 connecting between the Kanthal heaters 30 be covered with leakage prevention glass or the like that can withstand high temperatures. By doing so, it is possible to prevent thermal damage to the power supply itself caused by heat conduction through the lead wire 60 due to high-temperature exhaust gas.

In reality, nine sets of two kanthal heaters 30 are arranged in parallel. FIG. 3 is a plan view of the heating device 1 according to Embodiment 1 of the present invention.

As shown in FIG. 3, adjacent Kanthal heaters 30 are connected by cured lead wires 70, and connected to a power source (not shown) by lead wires 60 within the relatively low temperature space of the housing 10. . Note that the lead wires 60 are gathered together and guided from the wire entrance/exit 35 to the power source.

FIG. 4 is a schematic diagram showing the configuration of a heating system using the heating device 1 according to Embodiment 1 of the present invention. The heating device 1 according to the first embodiment is characterized in that a heat exchanger 2 is provided on the exhaust side.

In the configuration of FIG. 4, first, outside air at around 20° C. is introduced into the heat exchanger 2. On the other hand, exhaust gas at around 300° C. from the exhaust port 50 of the heating device 1 using the Kanthal heater 30 is also input into the heat exchanger 2. By doing so, the heat exchanger 2 obtains exhaust gas at around 150°C and exhaust gas at around 170°C to be input into the air supply port 40 of the heating device 1. Thereby, the heating effect within the heating device 1 can be enhanced, and by reducing the number of Kanthal heaters 30, power consumption can also be reduced.

FIG. 5 is a graph showing the measured value of the temperature rise of the exhaust gas of the heating system using the heating device 1 according to the first embodiment of the present invention. As shown in FIG. 5, it can be seen that exhaust gas at 450° C. can be obtained in about 250 seconds from the start of operation. In this way, compared to other electrical equipment, it is possible to reach high frequencies in a short time.

FIG. 6 is an exemplary cross-sectional view taken along the line BB in FIG. 3 of the heating device 1 according to the first embodiment of the present invention. As shown in FIG. 6, a plurality of Kanthal heaters 30 are arranged in parallel within the housing 10. The outer peripheral portion of the housing 10 is covered with a heat insulating material 80. The heat insulating material 80 is preferably made of a material with excellent heat resistance, such as rock wool. This makes it possible to avoid thermal damage such as burns caused by heat around the heating device 1, which is likely to occur due to heating of the casing 10 itself.

Of course, it is not limited to covering with the heat insulating material 80, and any structure may be used as long as the heat generated by the casing 10 does not leak to the surroundings. For example, the housing 10 may have a double structure, and cold air may be caused to flow through the space created by the double structure.

FIG. 7 is another illustrative cross-sectional view of the heating device 1 according to the first embodiment of the present invention taken along the line BB in FIG. 3. As shown in FIG. 7, a casing 90 is provided outside the casing 10 to provide a double structure. The housing 90 includes a cold air inlet 91 and a cold air outlet 92 so that cold air flows into the space between the housings 10 and 90.

The cold air injected from the cold air inlet 91 absorbs heat from the casing 10 while flowing through the space between the casings 10 and 90, and is discharged from the cold air outlet 92. Therefore, it becomes possible to suppress the amount of heat generated by the housing 10.

Note that it is preferable that the housing 90 be made of metal such as stainless steel, which has excellent heat resistance. However, the housing 90 is not particularly limited to a metal housing, and it goes without saying that the housing 90 itself may be made of thick quartz glass or the like so as to have heat insulating properties.

As described above, according to the first embodiment, the air (outside air) supplied from the air supply port 40 reaches a high temperature while passing through the ventilation pipe 32 that incorporates the Kanthal member 31 that generates a relatively large amount of heat. heated up to. As a result, supplied air (outside air) can be heated with high efficiency without using large equipment such as a boiler, and hot air of up to around 1000°C can be exhausted depending on the number of Kanthal heaters 30. It becomes possible.

(Embodiment 2)
FIG. 8 is a schematic diagram showing the configuration of a heating device 1 according to Embodiment 2 of the present invention. As shown in FIG. 8, like the first embodiment, the heating device 1 according to the second embodiment includes a plurality of Kanthal heaters 30 using Kanthal members 31 manufactured by KANTHAL (registered trademark). ing. In the second embodiment, like the first embodiment described above, nine sets of two kanthal heaters 30 are arranged in parallel.

In the second embodiment, 9 sets of 18 kanthal heaters 30 are inserted and fixed into two disk-shaped fixing plates 25 at the front and back. The number and arrangement of the Kanthal heaters 30 vary depending on the required specifications. In the second embodiment, as shown in FIG. 8C, the Kanthal heaters 30 are arranged in four rows, with five Kanthal heaters 30 arranged in two inner rows and four Kanthal heaters 30 arranged in two outer rows. Of course, the arrangement is not limited to this.

FIG. 9 is a schematic diagram showing only the fixed portions of the plurality of Kanthal heaters 30 of the heating device 1 according to the second embodiment of the present invention. As shown in FIG. 9, disk-shaped quartz plates 25 are arranged at both ends as fixing members, and 18 kanthal heaters 30 are fixed at both ends. Since the quartz plate 25 has heat resistance and low thermal conductivity, it will not be damaged by heating by the Kanthal heater 30.

Further, the kanthal heater 30 itself may be fixed so as to be enclosed therein so as not to radiate any heat to the outside unnecessarily. FIG. 10 is another schematic diagram showing only the fixed portions of the plurality of Kanthal heaters 30 of the heating device 1 according to the second embodiment of the present invention.

As shown in FIG. 10, a quartz column 26 having 18 through holes into which kanthal heaters 30 can be inserted is installed inside the housing 10, and 18 kanthal heaters 30 are inserted into the through holes. It is inserted. By using the quartz column 26, the entire area around the Kanthal heater 30 is covered with quartz, which has heat resistance and low thermal conductivity, so that the amount of heat from the Kanthal heater 30 is easily transmitted to the outside air passing through the ventilation pipe 32. .

The second embodiment differs from the first embodiment in that a heat exchange member 100 is provided along the outer surface of the casing 10 in which the Kanthal heater 30 is installed. The heat exchange member 100 may be a fin-shaped member through which outside air can pass in the longitudinal direction of the heating device 1 (kanthal heater 30) so that the air supplied from the air supply port 40 can pass therethrough. preferable. As for the material, it is preferable to use a metal such as stainless steel which has excellent heat resistance.

FIG. 11 is a two-sided view of the heat exchange member 100 of the heating device 1 according to Embodiment 2 of the present invention. FIG. 11(a) is a plan view of the heat exchange member 100 of the heating device 1 according to the second embodiment, and FIG. 11(b) is a plan view of the heat exchange member 100 of the heating device 1 according to the second embodiment. FIG.

As shown in FIG. 11(a), in the heat exchange member 100 according to the present embodiment, the fin-like member 101 is provided in a direction perpendicular to the joint portion 102, that is, in a direction through which outside air can pass. Then, a cylindrical member having a square cross section is assembled by combining at least four heat exchange members 100 having a length L that is at least the length of the heat generating portion of the Kanthal heater 30, and the inner periphery of the casing 10 is assembled. Install along the surface.

FIG. 12 is a perspective view showing an example of a method for joining the heat exchange member 100 of the heating device 1 according to Embodiment 2 of the present invention. In the second embodiment, in order to join the heat exchange member 100 in the simplest manner, a cylindrical body having a square cross-sectional shape is formed by fitting the joining parts 102 together.

Specifically, as shown in FIG. 12, for example, one of the two heat exchange members 100 is inverted, and the protruding joints 102 are fitted into the grooves 103 between the joints 102. By alternately fitting the four pieces together in this way, a cylindrical body having a uniform length and a rectangular cross-section is completed.

FIG. 13 is a schematic cross-sectional view of the heating device 1 according to Embodiment 2 of the present invention in a state where the heat exchange member 100 is joined. As shown in FIG. 13, heat exchange members 100a and 100b having opposite directions are arranged alternately, and their joint portions 102a and 102b are alternately fitted to each other as shown in FIG. 12. By doing so, the joint portion 102a and the joint portion 102b can be brought into close contact with each other to form a cylindrical body.

Returning to FIG. 8, the operation of the heating device 1 according to the second embodiment will be described. First, outside air is supplied from the air supply port 40. The outside air supplied to the housing 10 can only be exhausted from the ventilation pipe 32 of the Kanthal heater 30.

The outside air is heated by the Kanthal member 31 while passing through the ventilation pipe 32 . The high-temperature exhaust gas heated inside the ventilation pipe 32 is guided to the space in which the exhaust port 50 of the casing 10 is provided, and is discharged to the outside from the exhaust port 50.

On the other hand, a portion of the outside air supplied from the air supply port 40 passes through the heat exchange member 100. The heat exchange member 100 is heated by radiant heat emitted to the outside by the heat generated by the kanthal heater 30, and the outside air that has passed through the heat exchange member 100 and the outside air that has passed near the heat exchange member 100 is heated. Therefore, compared to the first embodiment in which the heat exchange member 100 is not provided, the temperature of the outside air at the stage of being guided to the ventilation pipe 32 of the Kanthal heater 30 is higher.

In the first embodiment, the heat exchanger 2 is provided on the exhaust side, but in the second embodiment, it is not necessary to provide it. This is because while the air supplied from the air supply port 40 is guided to the other end of the ventilation pipe 32, it passes through the heat exchange member 100 and is heated by the radiant heat of the Kanthal heater 30, increasing the temperature of the outside air that has passed through it. Therefore, although the temperature is lower than when the heat exchanger 2 is provided, the heating effect within the heating device 1 can be enhanced. This also makes it possible to reduce power consumption by reducing the number of Kanthal heaters 30 or by shortening the energization time.

Also in the second embodiment, nine sets of two Kanthal heaters 30 are arranged in parallel. Since the power consumption of one Kanthal heater 30 is approximately 2 kW, one set of Kanthal heaters 30 requires 4 kW, and nine sets requires 36 kW. It is highly efficient as it can generate exhaust gas with a temperature of over 1000°C with a power consumption of 36kW.

In the second embodiment as well, the outer peripheral portion of the housing 10 may be covered with the heat insulating material 80 as in the first embodiment. The heat insulating material 80 is preferably made of a material with excellent heat resistance, such as rock wool. This makes it possible to avoid thermal damage such as burns caused by heat around the heating device 1, which is likely to occur due to heating of the casing 10 itself.

Of course, it is not limited to covering with the heat insulating material 80, and any structure may be used as long as the heat generated by the casing 10 does not leak to the surroundings. For example, as in the first embodiment, the housing 10 may have a double structure, and cold air may be caused to flow through the space created by the double structure. Since the configuration itself is the same as that of Embodiment 1, detailed explanation will be omitted.

Note that it is preferable that the housing 90 be made of metal such as stainless steel, which has excellent heat resistance. However, the housing 90 is not particularly limited to a metal housing, and it goes without saying that the housing 90 itself may be made of thick quartz glass or the like so as to have heat insulating properties.

As described above, according to the second embodiment, while the air supplied from the air supply port 40 is guided to the other end of the ventilation pipe 32, the radiant heat of the Kanthal heater 30 is generated by passing through the heat exchange member 100. Since the temperature of the outside air passing through the heating device 1 increases, the heating effect within the heating device 1 can be enhanced. Therefore, it is also possible to reduce power consumption by reducing the number of Kanthal heaters 30 or shortening the energization time.

It goes without saying that the present invention is not limited to the above-mentioned embodiments, and that various modifications, substitutions, etc. can be made within the scope of the spirit of the present invention. The number of Kanthal heaters 30 may be increased as long as heat resistance allows, or the Kanthal heaters 30 may be arranged in a single row, or may be arranged in multiple rows.

Further, the heat exchange member 100 is not particularly limited to the heat exchange member 100 shown in the second embodiment. For example, the same effect can be expected even if a fin-shaped member is continuously attached around a linear member, and the linear member is bent and stretched around the casing 10.

FIG. 14 is a schematic diagram showing the configuration of the heat exchange member 110 of the heating device 1 according to Embodiment 2 of the present invention. As shown in FIG. 14, the heat exchange member 110 has a fin-like member 112 attached around a linear member 111. The fin-shaped member 112 may be attached spirally around the linear member 111, or disk-shaped members may be attached at regular intervals. Since heat resistance is required, it is preferable that both the linear member 111 and the fin-like member 112 be formed of a heat-resistant member such as stainless steel.

Then, the linear member is installed along the inner peripheral surface of the housing 10 while being bent. FIG. 15 is a schematic diagram showing a method of arranging the heat exchange member 110 of the heating device 1 according to Embodiment 2 of the present invention.

In the example of FIG. 15A, since the heat exchange member 110 is formed of a linear member 111, one heat exchange member 110 is sequentially bent along the inner circumferential surface of the casing 10, and the Kanthal heater 30 The heat exchange member 110 is disposed on the inner circumferential surface of the housing 10 so as to be present in the entire heating area. Of course, the present invention is not limited to this, and as shown in FIG. The heat exchange members 110 may be arranged on the inner surface of the casing 10 at regular intervals so that the heat exchange members 110 can be present at the same time.

Regardless of the arrangement method, as in the second embodiment, the air supplied from the air supply port 40 passes through the heat exchange member 110 while being guided to the other end of the ventilation pipe 32. Since it is heated by the radiant heat of the heater 30 and the temperature of the outside air passing through it increases, the heating effect within the heating device 1 can be enhanced. Therefore, it is also possible to reduce power consumption by reducing the number of Kanthal heaters 30 or shortening the energization time.

1 Heating device 2 Heat exchanger 10, 90 Housing 20 Partition 30 Kanthal heater 31 Kanthal member 32 Ventilation pipe 40 Air supply port 50 Exhaust port 80 Insulating material 100, 110 Heat exchange member

Claims (8)

In a heating device that heats air using a heater ,
The heater includes an electric heating material formed in a coil shape inserted into a cylindrical ventilation pipe,
A heating device in which one or more of the ventilation pipes are installed in a housing,
One end of the ventilation pipe is open to the exhaust port side within the housing, and the other end is open to the air supply port side within the housing,
Air is supplied from the air supply port, the supplied air is heated by the electric heating material while passing from the other end to the one end of the ventilation pipe, and is discharged to the outside from the exhaust port. and
The ventilation pipe penetrates and is fixed to a partition wall that divides a space within the housing,
The ventilation pipes are set as a pair, and the electric heating materials are connected to each other at one end side of the ventilation pipes, which is the space side where the exhaust port is provided, and the space side where the air supply port is provided. A heating device characterized in that the other end of the ventilation pipe is connected to a power source . The heating device according to claim 1 , wherein the ventilation pipe is formed of a member having heat resistance against high temperatures. Claim 1, wherein a heat exchange member is provided on the inner surface of the housing, and the air supplied from the air supply port is heated by radiant heat of the heater while being guided to the other end of the ventilation pipe. Or the heating device according to 2 . The heat exchange member includes a fin-like member through which air can pass in the same direction as the longitudinal direction of the ventilation pipe, and the heat exchange member is provided along the inner peripheral surface of the housing. The heating device according to claim 3 . 5. The housing according to claim 1 , further comprising a quartz column into which the heater can be inserted, and the heater is installed inside the casing with the heater inserted into the quartz column. heating device. 5. The heater according to claim 1, wherein two quartz plates are mounted on the front and back through which the heater can pass, and the heater is fixed to the quartz plate through the heater. heating device. The heating device according to any one of claims 1 to 6 , characterized in that an outer peripheral portion of the casing is covered with a heat insulating material. The heating device according to any one of claims 1 to 6, characterized in that the casing has a double structure, and cool air flows between the casings.

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