KR100827469B1 - Electic hot blast heater using high frequency induction heaing - Google Patents

Electic hot blast heater using high frequency induction heaing Download PDF

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Publication number
KR100827469B1
KR100827469B1 KR1020060110866A KR20060110866A KR100827469B1 KR 100827469 B1 KR100827469 B1 KR 100827469B1 KR 1020060110866 A KR1020060110866 A KR 1020060110866A KR 20060110866 A KR20060110866 A KR 20060110866A KR 100827469 B1 KR100827469 B1 KR 100827469B1
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South Korea
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heating
heater
high frequency
induction
air
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KR1020060110866A
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Korean (ko)
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김방배
구흥회
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김방배
구흥회
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/022—Air heaters with forced circulation using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0052—Details for air heaters
    • F24H9/0073—Arrangement or mounting of means for forcing the circulation of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2250/00—Electrical heat generating means
    • F24H2250/08—Induction

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

An electric hot blast heater is provided to heat air in an efficient manner by inducing friction resistance in the air flowing along a heating pipe. An electric hot blast heater includes a heating pipe(10), a tubular second heater(32), a tubular first heater(31), induction coils(21,22), and an air blower(40). The heating pipe guides flow of hot air. The tubular second heater is arranged in the heating pipe. The tubular first heater is arranged in the tubular second heater. The induction coils are interposed between the second heater and the first heater, and applied with high frequency current. The air blower is disposed at one open side of the heating pipe so as to compulsorily blow air.

Description

고주파유도가열방식의 전기온풍기{ELECTIC HOT BLAST HEATER USING HIGH FREQUENCY INDUCTION HEAING}ELECTIC HOT BLAST HEATER USING HIGH FREQUENCY INDUCTION HEAING}

도 1은 본 발명의 고주파유도가열방식 전기온풍기를 개념적으로 도시한 구성도. 1 is a block diagram conceptually showing a high frequency induction heating type electric warmer of the present invention.

도 2는 본 발명의 제1실시예에 따른 고주파유도가열방식의 전기온풍기(가열관은 생략됨)를 도시한 분해사시도. Figure 2 is an exploded perspective view showing a high-frequency induction heating type electric hot air blower (heating tube is omitted) according to a first embodiment of the present invention.

도 3은 본 발명의 제1실시예에 따른 고주파유도가열방식의 전기온풍기를 도시한 평면도이다. 3 is a plan view illustrating an electric hot air blower of a high frequency induction heating method according to a first embodiment of the present invention.

* 도면의 주요 부분에 대한 부호의 간단한 설명 *Brief description of symbols for the main parts of the drawings

10 : 가열관 21, 22 : 유도코일10: heating tube 21, 22: induction coil

31, 32 :제1 및 제2 가열체31, 32: 1st and 2nd heating body

본 발명은 온풍기에 관한 것으로, 보다 상세하게는 고주파유도가열방식을 이용한 전기온풍기에 관한 것이다. The present invention relates to a warm air fan, and more particularly to an electric warm air fan using a high frequency induction heating method.

일반적으로, 온풍기는 난방기(煖房機)의 발열체(發熱體) 뒤쪽에 팬을 장치하고, 따뜻한 바람을 강제로 보내는 장치로서, 석유, 석탄, 가스 등을 연료로 사용한다. In general, a hot air fan is provided with a fan behind a heating element of a heater and a device that sends warm wind by force, and uses oil, coal, gas, and the like as fuel.

이러한 석유 또는 가스를 연료로 이용하는 온풍기는 그 구조면에서 열손실이 크고, 부피 및 설치 면적이 크므로 설치비가 많이 들고 소형 경량화가 힘들며, 환경오염의 문제점과 화재 및 폭발의 위험성 있어서 취급상에 많은 주의가 뒤따르는 단점이 있었다. Such a heat blower using oil or gas as a fuel has a large heat loss in its structure, a large volume and an installation area, and thus, a large installation cost is difficult and it is difficult to reduce the size and light weight. There were drawbacks followed by attention.

이에 따라, 최근에는 저항열선에 직접 고전압을 인가하여 열선의 복사열을 이용하여 따뜻한 바람을 송풍하는 전기온풍기가 출시된 바 있지만, 이러한 저항열선을 이용한 전기온풍기는 그 저항열선의 수명에 문제점이 있고, 고전압을 이용함에 따라 절연 파괴 등에 의한 사고의 위험성이 높았다. Accordingly, in recent years, an electric hot air fan that directly applies a high voltage to the resistance heat wire and blows warm wind using radiant heat of the heat wire has been released. However, the electric hot air fan using the resistance heat wire has a problem in the life of the resistance heat wire. As the high voltage is used, there is a high risk of an accident due to insulation breakdown.

이러한 점을 감안하여 최근에는 고주파유도가열방식을 이용한 전기온풍기가 채택되고 있지만, 이러한 종래의 고주파유도가열방식의 전기온풍기는 유도코일측에 고주파 전류가 인가되면, 이 유도코일측에는 고주파 자기장이 발생하고, 이 고주파 자기장에 의해 자성체 재질의 발열체에 생기는 와전류(맴돌이전류)의 손실이나 히스테리시스 손실에 의해 발열체가 발열하고, 이 발열체의 발열에 의해 그 내부를 흐르는 공기가 가열되어 송풍기에 의해 송풍된다. In view of this, in recent years, an electric hot air fan using a high frequency induction heating method has been adopted. However, when a high frequency current is applied to the induction coil side, a high frequency magnetic field is generated on the induction coil side. The high frequency magnetic field causes the heating element to generate heat due to the loss of eddy current (eddy current) or hysteresis loss generated in the heating element made of the magnetic material.

하지만, 이러한 종래의 고주파 유도가열의 전기온풍기는 송풍관 내의 공기를 균일하고 신속하게 가열할 수 없어 그 가열효율이 실질적으로 저하되고, 또한 일정온도까지 가열시키는데 시간이 오래 걸릴 뿐만 아니라 그 전력 소모가 여전히 큰 단점을 내포하고 있다. However, such a conventional high-frequency induction heating electric hot air heater can not heat the air in the blower tube uniformly and quickly, the heating efficiency is substantially reduced, and it takes a long time to heat up to a constant temperature and the power consumption is still There are big disadvantages.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로, 고주파 유도가열에 의해 가열되는 전체 가열면적을 대폭 증대시킴으로써 가열관 내로 전달하는 열을 보다 균일하고 신속하게 전달함과 더불어 그 가열효율을 대폭 증대시킬 수 있는 고주파유도가열방식의 전기온풍기를 제공하는 데 그 목적이 있다. The present invention has been devised in view of the above, and by greatly increasing the total heating area heated by high frequency induction heating, the heat transfer into the heating tube is more uniformly and quickly delivered and the heating efficiency is greatly increased. The purpose is to provide a high-frequency induction heating type electric hot air fan that can be made.

또한, 본 발명은 가열관 내부를 흐르는 공기에 마찰저항을 유도함으로써 공기의 가열을 보다 효율적으로 수행할 수 있는 고주파유도가열방식의 전기온풍기를 제공하는 데 그 목적이 있다. In addition, an object of the present invention is to provide an electric hot air blower of a high frequency induction heating method capable of more efficiently heating the air by inducing friction resistance to the air flowing in the heating tube.

상기와 같은 목적을 달성하기 위한 본 발명은, The present invention for achieving the above object,

가열된 공기의 흐름을 안내하는 가열관; A heating tube guiding a flow of heated air;

상기 가열관의 내부에 구비된 유도코일;An induction coil provided inside the heating tube;

상기 유도코일의 내측면에 배치된 제1가열체; A first heating body disposed on the inner side of the induction coil;

상기 유도코일의 외측면에 배치된 제2가열체; 및 A second heating element disposed on an outer surface of the induction coil; And

공기를 송풍하는 송풍기;를 포함한다. It includes; a blower for blowing air.

상기 유도코일은 제1 및 제2 가열체 사이에 2개 이상의 유도코일이 병렬접속되어 가열통의 길이방향으로 배치된다. The induction coil has two or more induction coils connected in parallel between the first and second heating elements and arranged in the longitudinal direction of the heating tube.

상기 유도코일은 그 내주면 및 외주면에 내열성 재질의 보빈을 구비한다. The induction coil has a bobbin of a heat resistant material on its inner circumferential surface and its outer circumferential surface.

상기 제1가열체의 내경면 및 상기 제2가열체의 외경면에는 다수의 발열핀이 소정각도로 경사지게 각각 구비된다. The inner diameter surface of the first heating body and the outer diameter surface of the second heating body are each provided with a plurality of heating fins inclined at a predetermined angle.

상기 발열핀들의 상호 인접하는 상단부 및 하단부 측에는 다수의 개구가 형성된다. A plurality of openings are formed at upper and lower ends of the heating fins adjacent to each other.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 고주파유도가열방식의 전기온풍기를 도시한 구성도이다. 1 is a block diagram showing an electric hot air blower of the high frequency induction heating method of the present invention.

도시된 바와 같이, 본 발명의 전기온풍기는 가열관(10), 가열관(10) 내에 구비된 하나 이상의 유도코일(21, 22), 유도코일(21, 22)의 내외측에 개별적으로 배치된 제1 및 제2 가열체(31, 32)를 포함한다. As shown, the electric hot air blower of the present invention is disposed separately inside and outside the heating tube 10, one or more induction coils 21 and 22 and the induction coils 21 and 22 provided in the heating tube 10. First and second heating bodies 31 and 32 are included.

가열관(10)은 그 상하단이 개방되고, 내부에 공기의 흐름이 발생하는 유로(15a, 15b)을 구비하며, 평면상에서 원형 또는 각형 단면을 가질 수 있다. The heating tube 10 has upper and lower ends thereof and has flow paths 15a and 15b through which air flows. The heating tube 10 may have a circular or rectangular cross section on a plane.

유도코일(21, 22)은 가열관(10) 내에 배치되고, 이 유도코일(21, 22)에는 고주파전류를 공급하는 고주파전류 공급부(25)가 접속되어 있다. The induction coils 21 and 22 are arranged in the heating tube 10, and the induction coils 21 and 22 are connected with a high frequency current supply unit 25 for supplying a high frequency current.

제1가열체(31)는 유도코일(21, 22)의 내측면에 유도코일(21, 22)의 내경면에 소정간격으로 이격되게 설치된다. 고주파전류 공급부(25)로부터 고주파전류가 유도코일(21, 22)측에 인가되면 유도코일(21, 22)에는 고주파 자장이 형성되고, 이 고주파 자기장에 의해 유도코일(21, 22)의 내주면에 인접하는 제1가열체(31)측에는 와전류(맴돌이전류)의 손실이나 히스테리시스 손실에 의해 발열하여 제1가열체(31)의 내측공간을 통과하는 공기를 가열한다.The first heating element 31 is installed on the inner surfaces of the induction coils 21 and 22 to be spaced apart at predetermined intervals from the inner diameter surfaces of the induction coils 21 and 22. When a high frequency current is applied from the high frequency current supply unit 25 to the induction coils 21 and 22, a high frequency magnetic field is formed in the induction coils 21 and 22, and the high frequency magnetic field is applied to the inner circumferential surfaces of the induction coils 21 and 22. On the adjacent first heating element 31 side, heat is generated by loss of eddy current (eddy current) or hysteresis loss to heat air passing through the inner space of the first heating element 31.

제2가열체(32)는 유도코일(21, 22)의 외측면에 유도코일(21, 22)의 외경면에 소정간격으로 이격되게 설치된다. 마찬가지로, 고주파전류 공급부(25)로부터 고주파전류가 유도코일(21, 22)측에 인가되면 유도코일(21, 22)에는 고주파 자장이 형성되고, 이 고주파 자기장에 의해 유도코일(21, 22)의 외주면에 인접하는 제2가열체(32)측에는 와전류(맴돌이전류)의 손실이나 히스테리시스 손실에 의해 발열하여 제2가열체(32)의 내측공간을 통과하는 공기를 가열한다.The second heating body 32 is installed on the outer surfaces of the induction coils 21 and 22 to be spaced apart from the outer diameter surfaces of the induction coils 21 and 22 at predetermined intervals. Similarly, when a high frequency current is applied to the induction coils 21 and 22 from the high frequency current supply unit 25, a high frequency magnetic field is formed in the induction coils 21 and 22, and the induction coils 21 and 22 On the side of the second heating body 32 adjacent to the outer circumferential surface, heat is generated by the loss of the eddy current (eddy current) or the hysteresis loss to heat the air passing through the inner space of the second heating body 32.

이와 같이 본 발명은 유도코일(21, 22)의 내측 및 외측에 즉, 2중관 구조로 배치된 제1 및 제2 가열체(31, 32)에 의해, 가열관(10) 내의 공기를 보다 균일하고 신속하게 가열시킴으로써 그 가열효율을 대폭 증대시킨다. 즉, 본 발명은 가열면적을 대폭 확대시킴으로써 그 가열효율을 증진시키는 장점을 가진다. As described above, according to the present invention, the air in the heating tube 10 is more uniform by the first and second heating bodies 31 and 32 disposed inside and outside the induction coils 21 and 22, that is, in a double tube structure. By heating quickly and rapidly, the heating efficiency is greatly increased. That is, the present invention has the advantage of enhancing the heating efficiency by greatly expanding the heating area.

또한, 유도코일(21, 22)는 도 1에 도시된 바와 같이, 적어도 2개(21, 22)가 가열관(10)의 길이방향으로 배치되고, 각 유도코일(21, 22)은 고주파전류공급부(25)측에 병렬로 접속될 수 있다. In addition, as shown in FIG. 1, at least two 21 and 22 of the induction coils 21 and 22 are disposed in the longitudinal direction of the heating tube 10, and each of the induction coils 21 and 22 has a high frequency current. It can be connected in parallel to the supply part 25 side.

이러한 본 발명의 다중 유도코일(21, 22)는 그 병렬 접속구조에 의해 그 인덕턴스의 합성용량이 산출되고, 이 산출된 인덕턴스의 합성용량을 단일의 유도코일이 설치된 경우의 인덕턴스와 동일하게 설정할 경우 각 유도코일(21, 22)의 권수를 대폭 증대시킬 수 있고, 이에 따라 그 유도코일(21, 22)에 의한 발열면적이 증대된다. 여기서, 단일의 유도코일이 설치된 경우와 본 발명의 다중 유도코일(21, 22)은 각 코일의 굵기가 동일하고, 각 유도코일(21, 22)의 권수는 동일한 것을 전제로 한다. In the multiple induction coils 21 and 22 of the present invention, the combined capacity of the inductance is calculated by the parallel connection structure, and when the combined capacity of the calculated inductance is set equal to the inductance when a single induction coil is installed. The number of turns of each of the induction coils 21 and 22 can be greatly increased, so that the heat generating area by the induction coils 21 and 22 is increased. Here, the case where a single induction coil is installed and the multiple induction coils 21 and 22 of the present invention are assumed to have the same thickness of each coil, and the number of turns of each induction coil 21 and 22 is the same.

이에 의해, 본 발명은 병렬접속된 다중 유도코일(21, 22)이 제1 및 제2 가열체(31, 32) 사이에 개재시킴으로써 그 유도발열량을 증대시킬 수 있다. As a result, in the present invention, the induction calorific value can be increased by interposing multiple induction coils 21 and 22 connected in parallel between the first and second heating bodies 31 and 32.

또한, 유도코일(21, 22)은 그 내주면 및 외주면에 내열성 재질의 보빈(23, 24)이 일체형으로 구비되고, 이 보빈(23, 24)은 세라믹 등과 같은 내열성 재질로 이루어져 제1 및 제2 가열체(31, 32)로부터 유도코일(21, 22)측으로 열이 전달됨을 차단할 수 있다. In addition, the induction coils 21 and 22 are integrally provided with bobbins 23 and 24 of a heat resistant material on the inner and outer circumferential surfaces thereof, and the bobbins 23 and 24 are made of a heat resistant material such as ceramics and the like. It is possible to block the heat transfer from the heaters 31 and 32 to the induction coils 21 and 22.

그리고, 가열관(10)의 일측에는 송풍기(40)가 배치되고, 이 송풍기(40)에 의해 가열된 공기가 송풍된다. 송풍기(40)에 의해 송풍되는 공기는 제1가열체(31)의 내측에 구비된 제1유로(15a) 및 제2가열체(32) 및 가열관(10) 사이의 공간에 형성된 제2유로(15b)를 통해 송풍된다.And the blower 40 is arrange | positioned at one side of the heating tube 10, and the air heated by this blower 40 is blown. The air blown by the blower 40 is a second flow path formed in the space between the first flow path 15a and the second heater 32 and the heating tube 10 provided inside the first heater 31. It is blown through 15b.

도 2는 본 발명의 고주파유도가열방식 전기온풍기를 도시한 사시도이고, 도 3은 도 2의 A-A선을 따라 도시한 단면도이다. 2 is a perspective view showing a high frequency induction heating type electric hot air blower of the present invention, and FIG. 3 is a cross-sectional view taken along the line A-A of FIG.

본 발명의 전기온풍기는 가열관(10)의 상단 및 하단이 개방된 형태로 이루어지고, 제1가열체(31)의 내경면 및 제2가열체(32)의 외경면에는 다수의 발열핀(31a, 32a)이 나선형으로 구비될 수 있다. The electric heater of the present invention is formed in the form of the upper and lower ends of the heating tube 10, the inner diameter surface of the first heating body 31 and the outer diameter surface of the second heating body 32 a plurality of heating fins ( 31a and 32a may be provided spirally.

각 발열핀(31a, 32a)은 제1 및 제2 가열체(31, 32)의 내경면 및 외경면에 소정각도(a)로 경사져 구비될 수 있으며, 이러한 발열핀(31a, 32b)은 가열관(10)의 제1 및 제2 유로(15a, 15b)를 통해 송풍되는 공기에 마찰저항을 유발함과 더불어 공기와 발열핀(31a, 32b)의 접촉면적을 증대시킴으로써 제1 및 제2 가열체(31, 32)에 의한 공기의 가열효율을 보다 증대시킬 수 있다. Each of the heating fins 31a and 32a may be inclined at a predetermined angle (a) on the inner and outer surfaces of the first and second heating bodies 31 and 32, and the heating fins 31a and 32b may be heated. First and second heating by inducing frictional resistance to the air blown through the first and second flow paths 15a and 15b of the pipe 10 and increasing the contact area between the air and the heating fins 31a and 32b. The heating efficiency of the air by the sieves 31 and 32 can be further increased.

한편, 발열핀(31a, 32a)의 나선각(a)은 공기의 흐름에 지장을 주지 않으면서도 공기의 마찰저항을 높이고, 공기와 발열핀(31a, 32a) 사이의 접촉면적을 넓힐 수 있는 정도가 바람직할 것이다. 예컨대, 나선각(a)은 30°정도로 이루어져, 도 2에 도시된 바와 같이 발열핀(31a, 32a)의 상호 인접하는 상단부 및 하단부 측에는 다수의 개구(35)가 형성되고, 이러한 개구(35)를 통해서도 공기가 유입 및 유출됨으로써 제1 및 제2 유로(15a, 15b)를 통과하는 공기의 흐름에 지장을 주지 않게된다. On the other hand, the helix angle (a) of the heating fins (31a, 32a) is to increase the frictional resistance of the air without affecting the flow of air, and the extent to increase the contact area between the air and the heating fins (31a, 32a) Would be preferred. For example, the spiral angle (a) is made of about 30 °, a plurality of openings 35 are formed on the upper and lower ends of the heating fins (31a, 32a) adjacent to each other, as shown in FIG. Air is also introduced and discharged through the air so as not to interfere with the flow of air passing through the first and second flow paths 15a and 15b.

그리고, 튜브형상의 제1 및 제2 가열체(31, 32)는 그 하단 또는 상단에 다수의 고정리브(36)가 고정됨에 따라 상호 연결될 수 있다. In addition, the tubular first and second heating elements 31 and 32 may be connected to each other as a plurality of fixed ribs 36 are fixed to the lower end or the upper end thereof.

상기와 같은 본 발명은, 고주파 유도가열에 의해 가열되는 전체 가열면적을 대폭 증대시킴으로써 가열관 내로 전달하는 열을 보다 균일하고 신속하게 전달함과 더불어 그 가열효율을 대폭 증대시킬 수 있는 효과가 있다. The present invention as described above, by greatly increasing the total heating area heated by high-frequency induction heating, there is an effect that can be more uniformly and quickly transfer the heat transferred into the heating tube and significantly increase the heating efficiency.

또한, 본 발명은 가열관 내부를 흐르는 공기에 마찰저항을 유도함으로써 공기의 가열을 보다 효율적으로 수행할 수 있는 장점이 있다. In addition, the present invention has the advantage that the heating of the air can be performed more efficiently by inducing friction resistance to the air flowing in the heating tube.

Claims (5)

관 형상으로 구비되어 가열된 공기의 흐름을 안내하는 가열관과;A heating tube provided in a tubular shape and guiding a flow of heated air; 상기 가열관의 내주면과 간격을 두고 그 내부에 배치되는 관형상의 제2가열체와;A tubular second heating element disposed therein at intervals from an inner circumferential surface of the heating tube; 상기 제2가열체의 내주면과 간격을 두고 그 내부에 배치되는 관형상을 갖는 제1가열체와;A first heating body having a tubular shape disposed therein at intervals from an inner circumferential surface of the second heating body; 상기 제2가열체와 제1가열체 사이에 배치되는 것으로 고주파전류가 인가되는 유도코일과;An induction coil disposed between the second heating body and the first heating body, to which a high frequency current is applied; 상기 가열관의 개방된 일측에 배치되어 공기를 강제 송풍하는 송풍기;A blower disposed on one open side of the heating tube to forcibly blow air; 를 포함하여 구성되는 것을 특징으로 하는 고주파유도가열방식의 전기온풍기.High-frequency induction heating type electric hot air fan characterized in that it comprises a. 제1항에 있어서, The method of claim 1, 상기 유도코일은 제1 및 제2 가열체 사이에 2개 이상의 유도코일이 병렬접속되어 가열통의 길이방향으로 배치된 것을 특징으로 하는 고주파유도가열방식의 전기온풍기.The induction coil is a high-frequency induction heating type electric hot air heater, characterized in that two or more induction coils are connected in parallel between the first and second heating elements in the longitudinal direction of the heating tube. 제1항 또는 제2항에 있어서, The method according to claim 1 or 2, 상기 유도코일은 그 내주면 및 외주면에 내열성 재질의 보빈을 구비하는 것을 특징으로 하는 고주파유도가열방식의 전기온풍기.The induction coil has a bobbin of a heat-resistant material on the inner circumferential surface and the outer circumferential surface thereof. 제3항에 있어서, The method of claim 3, 상기 제1가열체의 내경면 및 상기 제2가열체의 외경면에는 다수의 발열핀이 소정각도로 경사지게 각각 구비되는 것을 특징으로 하는 고주파유도가열방식의 전기온풍기.An electric heater of the high frequency induction heating type, characterized in that a plurality of heating fins are inclined at a predetermined angle on the inner diameter surface of the first heating body and the outer diameter surface of the second heating body. 제4항에 있어서, The method of claim 4, wherein 상기 발열핀들의 상호 인접하는 상단부 및 하단부 측에는 다수의 개구가 형성된 것을 특징으로 하는 고주파유도가열방식의 전기온풍기.A high frequency induction heating type electric hot air heater, characterized in that a plurality of openings are formed on the upper and lower end portions adjacent to each other of the heating fins.
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KR101064408B1 (en) 2009-01-16 2011-09-14 정가영 Electic hot blast heater using high frequency induction heating
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KR102026583B1 (en) * 2019-03-14 2019-09-27 양승운 Hot Air Blower Using Induction Heater

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KR102026583B1 (en) * 2019-03-14 2019-09-27 양승운 Hot Air Blower Using Induction Heater

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