KR20220104347A - Valve heating device of semiconductor equipment with constant temperature heating function - Google Patents

Valve heating device of semiconductor equipment with constant temperature heating function Download PDF

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KR20220104347A
KR20220104347A KR1020210006489A KR20210006489A KR20220104347A KR 20220104347 A KR20220104347 A KR 20220104347A KR 1020210006489 A KR1020210006489 A KR 1020210006489A KR 20210006489 A KR20210006489 A KR 20210006489A KR 20220104347 A KR20220104347 A KR 20220104347A
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constant temperature
valve
temperature heating
cover
heating device
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KR1020210006489A
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KR102466993B1 (en
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조영태
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전주대학교 산학협력단
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K49/00—Means in or on valves for heating or cooling
    • F16K49/002—Electric heating means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/67005—Apparatus not specifically provided for elsewhere
    • H01L21/67011—Apparatus for manufacture or treatment
    • H01L21/67017—Apparatus for fluid treatment
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Valves (AREA)
  • Control Of Resistance Heating (AREA)
  • Control Of Temperature (AREA)

Abstract

The present invention is to provide a valve heating device for semiconductor equipment with improved constant temperature heating function, which comprises: a plurality of heat conducting members (110) formed to improve thermal conductivity by increasing adhesion and surface area between an outer surface of a valve (10) and an inner surface of a cover (120); a plurality of covers (120) installed so as to surround the outer surface of the valve (10) by coming into contact with an outer surface of the heat conducting member (110); and a plurality of constant temperature heating units (130) formed on one side of the cover (120) to be heated to a constant temperature. The present invention has an effect of minimizing the sticking of the powder because it is possible to improve the thermal conductivity by closely contacting the valve and the cover. In particular, the present invention has an effect of smoothly transferring heat to the valve by minimizing heat loss of the constant temperature heating unit.

Description

정온 가열기능을 향상한 반도체설비의 밸브 가열장치{Valve heating device of semiconductor equipment with constant temperature heating function}Valve heating device of semiconductor equipment with constant temperature heating function

본 발명은 정온 가열기능을 향상한 반도체설비의 밸브 가열장치에 관한 것으로, 더욱 상세하게는 반도체 제조공정에서 사용하는 밸브의 내벽에 균일한 온도분포를 위해 열전도율을 향상시켜 파우더의 고착현상을 최소화할 수 있도록 하는 정온 가열기능을 향상한 반도체설비의 밸브 가열장치에 관한 것이다.The present invention relates to a valve heating device for a semiconductor facility with improved constant temperature heating function, and more particularly, to minimize powder sticking by improving thermal conductivity for uniform temperature distribution on the inner wall of a valve used in a semiconductor manufacturing process. It relates to a valve heating device for semiconductor equipment with improved constant temperature heating function.

일반적으로 반도체 제조 공정에서는 웨이퍼 상에 특정 패턴의 회로를 형성하기 위해 화학증착법(CVD)이나 에칭(etching) 등의 공정을 수행하며 이러한 공정에는 다양한 반응가스를 사용한다.In general, in a semiconductor manufacturing process, a process such as chemical vapor deposition (CVD) or etching is performed to form a circuit having a specific pattern on a wafer, and various reactive gases are used in these processes.

이러한 반응가스는 파우더를 포함하고 있어 이송과정에서 열손실로 인해 쉽게 응결되어 밸브의 내측에 파우더가 고착하여 잦은 고장을 유발하고 이송효율을 저하시키는 문제를 갖게 되었다.Since this reaction gas contains powder, it is easily condensed due to heat loss during the transfer process, and the powder adheres to the inside of the valve, causing frequent failures and lowering transfer efficiency.

따라서 최근에는 밸브의 표면에 커버를 설치하고, 상기 커버의 일측에 열선 또는 PTC소자 및 면상발열체 등과 같은 가열유닛을 적용한다.Therefore, recently, a cover is installed on the surface of the valve, and a heating unit such as a heating wire or a PTC element and a planar heating element is applied to one side of the cover.

그러나 밸브의 형태가 다양하고 표면이 굴곡진 상태이므로 상기 커버와 맞닿은 표면적이 균일하지 않으므로 가열유닛의 열전도율이 떨어져 파우더의 고착을 효과적으로 감소시킬 수 없는 문제를 갖게 되었다.However, since the shape of the valve is various and the surface is curved, the surface area in contact with the cover is not uniform, so the thermal conductivity of the heating unit is lowered, so that the adhesion of the powder cannot be effectively reduced.

또한, 상기 커버와 가열유닛의 사이에 열손실이 발생하여 정온 가열기능을 저하시키는 문제를 갖게 되었다.In addition, there is a problem that heat loss occurs between the cover and the heating unit to lower the constant temperature heating function.

한국등록실용신안공보 제20-0446518호(2009.11.13.)Korean Utility Model Publication No. 20-0446518 (2009.11.13.) 한국등록특허공보 제10-1228979호(2013.02.01.)Korean Patent Publication No. 10-1228979 (2013.02.01.) 한국등록특허공보 제10-2161842호(2020.10.05.)Korean Patent Publication No. 10-2161842 (2020.10.05.)

따라서 본 발명은 상기와 같은 종래의 문제를 해결하기 위해 안출한 것으로서, Therefore, the present invention has been devised to solve the conventional problems as described above,

본 발명은 밸브와 커버의 열전도율을 향상시킬 수 있는 정온 가열기능을 향상한 반도체설비의 밸브 가열장치를 제공함에 목적이 있다.An object of the present invention is to provide a valve heating device for semiconductor equipment with improved constant temperature heating function capable of improving the thermal conductivity of a valve and a cover.

특히 본 발명은 정온 가열유닛의 열손실을 최소화할 수 있는 정온 가열기능을 향상한 반도체설비의 밸브 가열장치를 제공함에 다른 목적이 있다.In particular, it is another object of the present invention to provide a valve heating device for semiconductor equipment with an improved constant temperature heating function capable of minimizing heat loss of the constant temperature heating unit.

상기 목적을 달성하기 위한 본 발명 정온 가열기능을 향상한 반도체설비의 밸브 가열장치(100)는,The valve heating device 100 for semiconductor equipment with improved constant temperature heating function of the present invention for achieving the above object,

밸브(10)의 외측면과 커버(120)의 내측면 사이에 밀착 및 표면적을 증대시켜 열전도율을 향상시킬 수 있도록 형성하는 다수개의 열전도부재(110); 상기 열전도부재(110)의 외측면에 맞닿아 상기 밸브(10)의 외측면을 감싸도록 설치하는 다수개의 커버(120); 상기 커버(120)의 일측에 일정온도로 가열할 수 있도록 형성하는 다수개의 정온 가열유닛(130);를 포함하는 것을 특징으로 한다. A plurality of heat-conducting members 110 formed so as to improve thermal conductivity by increasing the adhesion and surface area between the outer surface of the valve 10 and the inner surface of the cover 120; a plurality of covers 120 installed so as to abut against the outer surface of the heat conduction member 110 and surround the outer surface of the valve 10; It characterized in that it includes; a plurality of constant temperature heating units 130 formed to be heated to a predetermined temperature on one side of the cover 120.

여기서 상기 열전도부재(110)는 서멀패드를 사용하는 것을 특징으로 한다.Here, the heat-conducting member 110 is characterized in that a thermal pad is used.

한편, 상기 정온 가열유닛(130)은 상기 커버(120)의 외측 또는 일측에 형성하는 삽입부(121)의 내측에 삽입하여 상기 커버(120)를 일정온도로 가열하는 정온 가열부재(131); 상기 정온 가열부재(131)의 외측면에 선 접촉하여 열손실을 방지할 수 있도록 형성하는 열손실 방지부재(132); 상기 열손실 방지부재(132)를 밀착시켜 상기 커버(120)의 외측 또는 일측에 고정할 수 있도록 형성하는 고정부재(133);를 포함하는 것을 특징으로 한다.On the other hand, the constant temperature heating unit 130 is a constant temperature heating member 131 for heating the cover 120 to a predetermined temperature by inserting it into the inside of the insertion portion 121 formed on the outside or one side of the cover 120; a heat loss prevention member 132 formed to prevent heat loss by making line contact with the outer surface of the constant temperature heating member 131; and a fixing member 133 for fixing the heat loss preventing member 132 to the outside or one side of the cover 120 .

특히 상기 정온 가열부재(131)는 PTC소자 또는 면상발열체를 사용하는 것을 특징으로 한다.In particular, the constant temperature heating member 131 is characterized by using a PTC element or a planar heating element.

또한, 상기 열손실 방지부재(132)는 하부에 상기 정온 가열부재(131)의 표면과 선 접촉할 수 있도록 형성하는 돌출부(132a);를 포함하는 것을 특징으로 한다.In addition, the heat loss prevention member 132 is characterized in that it comprises a;

본 발명은 밸브와 커버의 사이를 긴밀하게 밀착시켜 열전도율을 향상시킬 수 있으므로 파우더의 고착현상을 최소화할 수 있는 효과를 갖는다.The present invention has the effect of minimizing the adhesion of the powder because it is possible to improve the thermal conductivity by closely adhering between the valve and the cover.

특히 본 발명은 정온 가열유닛의 열손실을 최소화하여 밸브로 열을 원활하게 전달할 수 있는 효과를 갖는다.In particular, the present invention has the effect of smoothly transferring heat to the valve by minimizing the heat loss of the constant temperature heating unit.

도 1은 본 발명 정온 가열기능을 향상한 반도체설비의 밸브 가열장치에 대한 실시예를 나타내기 위한 분리 사시도.
도 2는 본 발명 정온 가열기능을 향상한 반도체설비의 밸브 가열장치에 대한 실시예를 나타내기 위한 결합 사시도.
도 3은 본 발명에서 정온 가열유닛의 구성을 나타내기 위한 분리 사시도.1 is an exploded perspective view showing an embodiment of the valve heating device of the semiconductor equipment with improved constant temperature heating function of the present invention.
Figure 2 is a combined perspective view for showing an embodiment of the present invention for a valve heating device of a semiconductor equipment with improved constant temperature heating function.
Figure 3 is an exploded perspective view showing the configuration of the constant temperature heating unit in the present invention.

상기한 바와 같이 본 발명의 구성을 첨부한 도면에 의해 상세히 설명하면 다음과 같다.As described above, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명 정온 가열기능을 향상한 반도체설비의 밸브 가열장치에 대한 실시예를 나타내기 위한 분리 사시도이고, 도 2는 본 발명 정온 가열기능을 향상한 반도체설비의 밸브 가열장치에 대한 실시예를 나타내기 위한 결합 사시도이며, 도 3은 본 발명에서 정온 가열유닛의 구성을 나타내기 위한 분리 사시도를 도시한 것이다.1 is an exploded perspective view showing an embodiment of a valve heating device of a semiconductor facility with improved constant temperature heating function of the present invention, and FIG. 2 is an embodiment of a valve heating device of a semiconductor facility with improved constant temperature heating function of the present invention It is a combined perspective view for showing, Figure 3 is an exploded perspective view for showing the configuration of the constant temperature heating unit in the present invention.

본 발명은 밸브(10)의 외측면과 커버(120)의 내측면 사이에 밀착 및 표면적을 증대시켜 열전도율을 향상시킬 수 있도록 형성하는 다수개의 열전도부재(110); 상기 열전도부재(110)의 외측면에 맞닿아 상기 밸브(10)의 외측면을 감싸도록 설치하는 다수개의 커버(120); 상기 커버(120)의 일측에 일정온도로 가열할 수 있도록 형성하는 다수개의 정온 가열유닛(130);를 포함한다. The present invention includes a plurality of heat-conducting members 110 formed so as to improve thermal conductivity by increasing adhesion and surface area between the outer surface of the valve 10 and the inner surface of the cover 120; a plurality of covers 120 installed so as to abut against the outer surface of the heat conduction member 110 and surround the outer surface of the valve 10; It includes a;

특히 상기 밸브(10)는 표면이 거칠고 굴곡진 형상으로 상기 커버(120)가 긴밀하게 밀착시킬 수 없으므로 열전도율이 떨어지는 한계를 갖게 되었다.In particular, the valve 10 has a rough surface and a curved shape, and since the cover 120 cannot be closely attached to the valve 10, the thermal conductivity is lowered.

따라서 상기 열전도부재(110)를 이용하여 상기 밸브(10)의 외측면과 커버(120)의 내측면 사이를 밀착시켜 표면적을 증대시킴으로써 상기 정온 가열유닛(130)의 작동으로 발생하는 열을 상기 밸브(10)의 표면으로 원활하게 전달할 수 있다.Therefore, the heat generated by the operation of the constant temperature heating unit 130 by using the heat conduction member 110 to increase the surface area by making close contact between the outer surface of the valve 10 and the inner surface of the cover 120 is transferred to the valve. It can be smoothly transferred to the surface of (10).

여기서 상기 열전도부재(110)는 일정두께와 크기를 갖는 서멀패드를 사용하여 상기 밸브(10)의 외측면과 커버(120)의 내측면 사이에 밀착함으로써 표면적을 증대시켜 열전도율을 향상시킬 수 있다.Here, the heat-conducting member 110 uses a thermal pad having a predetermined thickness and size to closely contact the outer surface of the valve 10 and the inner surface of the cover 120 to increase the surface area, thereby improving thermal conductivity.

본 발명에서 상기 열전도부재(110)는 상부면과 하부면에 접착제를 포함하여 상기 밸브(10)의 외측면과 커버(120)의 내측면 사이에 접착할 수 있다.In the present invention, the heat-conducting member 110 may include an adhesive on the upper surface and the lower surface to be adhered between the outer surface of the valve 10 and the inner surface of the cover 120 .

한편, 상기 커버(120)는 상기 밸브(10)의 외측면과 동일한 형상으로 조립 또는 분리할 수 있도록 다수개를 형성한다.On the other hand, the cover 120 is formed in plurality so that it can be assembled or separated in the same shape as the outer surface of the valve (10).

즉, 상기 커버(120)가 상기 밸브(10)의 외측면을 감싸도록 다수개를 형성하고 서로 볼트 등과 같은 체결수단을 이용하여 조립 또는 분리할 수 있다.That is, a plurality of the covers 120 may be formed to surround the outer surface of the valve 10 and may be assembled or separated from each other using fastening means such as bolts.

그리고 상기 정온 가열유닛(130)은 상기 커버(120)의 외측 또는 일측에 형성하는 삽입부(121)의 내측에 삽입하여 상기 커버(120)를 일정온도로 가열하는 정온 가열부재(131); 상기 정온 가열부재(131)의 외측면에 선 접촉하여 열손실을 방지할 수 있도록 형성하는 열손실 방지부재(132); 상기 열손실 방지부재(132)를 밀착시켜 상기 커버(120)의 외측 또는 일측에 고정할 수 있도록 형성하는 고정부재(133);를 포함한다.And the constant temperature heating unit 130 is a constant temperature heating member 131 for heating the cover 120 to a predetermined temperature by inserting it into the inside of the insertion portion 121 formed on the outside or one side of the cover 120; a heat loss prevention member 132 formed to prevent heat loss by making line contact with the outer surface of the constant temperature heating member 131; and a fixing member 133 forming the heat loss preventing member 132 in close contact to be fixed to the outside or one side of the cover 120 .

특히 상기 삽입부(121)는 상기 정온 가열부재(131)를 내측에 삽입 및 밀착시켜 열전도율을 향상시키기 위한 구성으로, 상기 정온 가열부재(131)가 내측으로 삽입할 수 있도록 일정넓이와 깊이를 갖도록 형성한다.In particular, the insertion part 121 is configured to improve thermal conductivity by inserting and closely contacting the constant temperature heating member 131 to the inside, and has a predetermined width and depth so that the constant temperature heating member 131 can be inserted inside. to form

여기서 상기 정온 가열부재(131)는 PT(Positive Temperature)소자 또는 PET(Polyethylene Terephthalate)필름 사이에 탄소섬유를 삽입하여 융착 제조된 면상발열체를 사용할 수 있다. Here, the constant temperature heating member 131 may use a planar heating element manufactured by fusion by inserting carbon fibers between a PT (Positive Temperature) device or a PET (Polyethylene Terephthalate) film.

또한, 상기 열손실 방지부재(132)는 상기 정온 가열부재(131)의 작동으로 발생하는 열이 상기 커버(120)로 전달되지 않고 외부로 손실되는 현상을 방지하는 역할을 수행한다.In addition, the heat loss preventing member 132 serves to prevent heat generated by the operation of the constant temperature heating member 131 from being lost to the outside without being transferred to the cover 120 .

이때 상기 열손실 방지부재(132)는 스테인리스, 세라믹, 질석 등과 같이 열전도율이 낮은 재질로 형성할 수 있다.In this case, the heat loss preventing member 132 may be formed of a material having low thermal conductivity, such as stainless steel, ceramic, vermiculite, or the like.

특히 상기 열손실 방지부재(132)는 일정두께를 갖는 판재형상으로 상기 정온 가열부재(131)의 표면과 선 접촉하여 열 손실을 최소화할 수 있도록 형성하는 돌출부(132a);를 포함한다.In particular, the heat loss preventing member 132 has a plate shape having a predetermined thickness, and a protrusion 132a formed to minimize heat loss by making line contact with the surface of the constant temperature heating member 131 .

그리고 상기 고정부재(133)는 상기 열손실 방지부재(132)를 밀착시키기 위해서 일정넓이를 갖도록 형성하고 볼트 등을 이용하여 상기 커버(120)의 측면 또는 외측에 고정할 수 있다.In addition, the fixing member 133 may be formed to have a predetermined width in order to closely contact the heat loss preventing member 132 , and may be fixed to the side or outside of the cover 120 using a bolt or the like.

이처럼 상기와 같이 본 발명의 실시한 예에 대하여 상세히 설명하였으나, 본 발명의 권리범위는 이에 한정되지 않으며, 본 발명의 실시한 예와 실질적으로 균등의 범위에 있는 것까지 본 발명의 권리범위가 포함되는 것은 당연하다.As described above, the embodiment of the present invention has been described in detail, but the scope of the present invention is not limited thereto, and the scope of the present invention is included to the extent that it is substantially equivalent to the embodiment of the present invention. Of course.

10: 밸브
100: 본 발명 정온 가열기능을 향상한 반도체설비의 밸브 가열장치
110: 열전도부재
120: 커버 121: 삽입부
130: 정온 가열유닛 131: 정온 가열부재
132: 열손실 방지부재 132a: 돌출부
133: 고정부재10: valve
100: valve heating device for semiconductor equipment with improved constant temperature heating function of the present invention
110: heat conduction member
120: cover 121: insertion part
130: constant temperature heating unit 131: constant temperature heating member
132: heat loss prevention member 132a: protrusion
133: fixing member

Claims (5)

밸브(10)의 외측면과 커버(120)의 내측면 사이에 밀착 및 표면적을 증대시켜 열전도율을 향상시킬 수 있도록 형성하는 다수개의 열전도부재(110); 상기 열전도부재(110)의 외측면에 맞닿아 상기 밸브(10)의 외측면을 감싸도록 설치하는 다수개의 커버(120); 상기 커버(120)의 일측에 일정온도로 가열할 수 있도록 형성하는 다수개의 정온 가열유닛(130);를 포함하는 것을 특징으로 하는 정온 가열기능을 향상한 반도체설비의 밸브 가열장치.A plurality of heat-conducting members 110 formed so as to improve thermal conductivity by increasing the adhesion and surface area between the outer surface of the valve 10 and the inner surface of the cover 120; a plurality of covers 120 installed so as to abut against the outer surface of the heat conduction member 110 and surround the outer surface of the valve 10; A valve heating device for a semiconductor facility with improved constant temperature heating function, comprising: a plurality of constant temperature heating units 130 formed on one side of the cover 120 to be heated to a predetermined temperature. 청구항 1에 있어서, 상기 열전도부재(110)는 서멀패드를 사용하는 것을 특징으로 하는 정온 가열기능을 향상한 반도체설비의 밸브 가열장치.The valve heating device of claim 1, wherein the heat conducting member 110 uses a thermal pad. 청구항 1에 있어서, 상기 정온 가열유닛(130)은 상기 커버(120)의 외측 또는 일측에 형성하는 삽입부(121)의 내측에 삽입하여 상기 커버(120)를 일정온도로 가열하는 정온 가열부재(131); 상기 정온 가열부재(131)의 외측면에 선 접촉하여 열손실을 방지할 수 있도록 형성하는 열손실 방지부재(132); 상기 열손실 방지부재(132)를 밀착시켜 상기 커버(120)의 외측 또는 일측에 고정할 수 있도록 형성하는 고정부재(133);를 포함하는 것을 특징으로 하는 정온 가열기능을 향상한 반도체설비의 밸브 가열장치.The method according to claim 1, wherein the constant temperature heating unit 130 is a constant temperature heating member ( 131); a heat loss prevention member 132 formed to prevent heat loss by making line contact with the outer surface of the constant temperature heating member 131; A valve of a semiconductor facility with improved constant temperature heating function, comprising: a fixing member 133 that closely adheres the heat loss prevention member 132 to fix it on the outside or one side of the cover 120 heating device. 청구항 3에 있어서, 상기 정온 가열부재(131)는 PTC소자 또는 면상발열체를 사용하는 것을 특징으로 하는 정온 가열기능을 향상한 반도체설비의 밸브 가열장치.The valve heating device of claim 3, wherein the constant temperature heating member 131 uses a PTC element or a planar heating element. 청구항 3에 있어서, 상기 열손실 방지부재(132)는 하부에 상기 정온 가열부재(131)의 표면과 선 접촉할 수 있도록 형성하는 돌출부(132a);를 포함하는 것을 특징으로 하는 정온 가열기능을 향상한 반도체설비의 밸브 가열장치.The method according to claim 3, wherein the heat loss prevention member 132 is a constant temperature heating function, characterized in that it comprises a; A valve heating device for a semiconductor facility.
KR1020210006489A 2021-01-18 2021-01-18 Valve heating device of semiconductor equipment with constant temperature heating function KR102466993B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200446518Y1 (en) 2009-03-05 2009-11-13 송종규 A valve heating device
KR20100135640A (en) * 2009-11-09 2010-12-27 (주)화인 Heat jacket
KR101228979B1 (en) 2012-05-18 2013-02-01 김영덕 Heater jacket
JP2017166759A (en) * 2016-03-17 2017-09-21 イビデン株式会社 Adiabatic heat insulation structure
KR102161842B1 (en) 2019-05-29 2020-10-05 주식회사 다원물산 Heating apparatus for three way valve of exhaust depowder module

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200446518Y1 (en) 2009-03-05 2009-11-13 송종규 A valve heating device
KR20100135640A (en) * 2009-11-09 2010-12-27 (주)화인 Heat jacket
KR101228979B1 (en) 2012-05-18 2013-02-01 김영덕 Heater jacket
JP2017166759A (en) * 2016-03-17 2017-09-21 イビデン株式会社 Adiabatic heat insulation structure
KR102161842B1 (en) 2019-05-29 2020-10-05 주식회사 다원물산 Heating apparatus for three way valve of exhaust depowder module

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