JP2006112451A - Vacuum structural body, vacuum thermal insulation panel, sealing method for vacuum structural body, and manufacturing method for vacuum structural body - Google Patents

Vacuum structural body, vacuum thermal insulation panel, sealing method for vacuum structural body, and manufacturing method for vacuum structural body Download PDF

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JP2006112451A
JP2006112451A JP2004297627A JP2004297627A JP2006112451A JP 2006112451 A JP2006112451 A JP 2006112451A JP 2004297627 A JP2004297627 A JP 2004297627A JP 2004297627 A JP2004297627 A JP 2004297627A JP 2006112451 A JP2006112451 A JP 2006112451A
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vacuum
exhaust port
hole
vacuum structure
closing
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Tadahiro Omi
忠弘 大見
Mitsuyuki Wadasako
三志 和田迫
Tsutomu Kobayashi
強 小林
Yoshiyuki Motoyoshi
芳之 本吉
Akira Sasaki
章 佐々木
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Tohoku University NUC
Nichias Corp
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Tohoku University NUC
Nichias Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve-less vacuum structural body by improving a closing material for closing the exhaust port of the vacuum structural body. <P>SOLUTION: A nozzle 13 is fitted to the panel upper surface 10 of a vacuum insulation panel to form an exhaust port 20, and the closing material is fitted thereto to close the exhaust port 20. The closing material 30 is formed of a screw material of roughly T-shape in longitudinal section, comprises an inlet hole 32 formed in the bottom face 31 of a screw part in contact with a vacuum space 11 inside the vacuum heat insulation panel and an exhaust hole 35 formed in a screw part side face 34 inside in contact with the inner wall 21 of the exhaust port 20, and comprises a through hole 39 connecting the inlet hole 32 to the exhaust hole 35. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、バルブレスの真空構造体に関する真空排気技術に関するものである。   The present invention relates to a vacuum exhaust technology related to a valveless vacuum structure.

真空構造体には、真空構造体内を真空状に排気するためにバルブが取り付けられていた。このため、バルブ部分が突出し、真空構造体の使用上じゃまになる場合があった。
そこで、バルブを必要としないバルブレスの真空構造体が求められ、特許文献１や２に記載されるようなバルブレスの真空封止構造が開発されている。
特開２００２−１４３０００号公報 特開平０９−１１９５８８号公報 A valve was attached to the vacuum structure to evacuate the vacuum structure in a vacuum. For this reason, the valve portion protrudes, which sometimes obstructs the use of the vacuum structure.
Therefore, a valveless vacuum structure that does not require a valve is required, and a valveless vacuum sealing structure as described in Patent Documents 1 and 2 has been developed.
JP 2002-143000 A JP 09-119588 A

しかし、従来のバルブレスの真空構造体には、次のような問題点があった。
（１）真空構造体を真空状態にするために、開放状態の構造体自体を真空チャンバ内に配置し、目的の真空度まで排気した状態で、開放部を溶接するなどで封止する必要があった。これらは真空チャンバ内での溶接工程を必要とし、設備の煩雑化や封止作業の自由度に制限があった。
（２）従来の二重構造にした真空断熱パネルは、第１真空封止などにネジ止めが使われているが真空チャンバ内で真空排気後封止するか、仮封止して真空排気するので、前者は設備の煩雑化、後者は排気に時間がかかる問題があった。 However, the conventional valveless vacuum structure has the following problems.
(1) In order to place the vacuum structure in a vacuum state, the open structure itself must be placed in a vacuum chamber and sealed by welding the open portion in a state where the vacuum structure is evacuated to a desired degree of vacuum. there were. These require a welding process in a vacuum chamber, which complicates equipment and restricts the degree of freedom of sealing work.
(2) The conventional vacuum heat insulation panel having a double structure is screwed for the first vacuum sealing or the like, but is sealed after evacuation in a vacuum chamber or temporarily sealed and evacuated. Therefore, the former has a problem of complicated facilities, and the latter has a problem that it takes time to exhaust.

そこで、本発明は、真空構造体の排気口を閉塞するための閉塞材に工夫を施し、新規なバルブレス真空構造体を提供することを目的とする。   In view of the above, an object of the present invention is to provide a novel valveless vacuum structure by devising a closing material for closing the exhaust port of the vacuum structure.

上記目的を達成するために、第一の発明は、表面に形成される排気口と、排気口を閉塞するための閉塞材とを有する真空構造体であって、閉塞材は、真空構造体内部の真空空間と接する取入孔と、排気口に接続される内壁に接する排出孔と、取入孔と排出孔とを結んだ貫通穴とを備えることを特徴とする真空構造体である。
ここで、本発明においては、真空とは大気圧１０１３２５Ｐａ以下をいい、真空構造体の内部空間が減圧されていることをいう。また、真空構造体が断熱用途に使用される真空断熱パネルであった場合、その真空度は１３３３３Ｐａ〜０．０１３Ｐａが好ましく、より好ましくは１３３３Ｐａ〜１．３Ｐａ、さらに好ましくは１０００Ｐａ〜１０Ｐａである。
第二の発明は、前記閉塞材は、縦断面略Ｔ字形をしたネジ材であることを特徴とする真空構造体である。
第三の発明は、前記閉塞材と真空構造体の表面材とが溶接され、その溶接部近傍に段部を形成することを特徴とする真空構造体である。なお、ここで、溶接部近傍の段部は、溶接部と接する部分の近くに形成される段部を意味する。
第四の発明は、前記排気口は、真空構造体表面に設けられた取付孔に、真空構造体内部の真空空間を仕切る排気口形成ユニットを取り付けることで形成され、その排気口形成ユニットは、真空空間と前記排気口と連通するための連通孔を有することを特徴とする真空構造体である。
第五の発明は、第一から第四の発明に係る真空構造体からなる真空断熱パネルであることを特徴とするものである。 In order to achieve the above object, a first invention is a vacuum structure having an exhaust port formed on a surface and a closing material for closing the exhaust port, wherein the closing material is inside the vacuum structure. A vacuum structure comprising an intake hole in contact with the vacuum space, a discharge hole in contact with an inner wall connected to the exhaust port, and a through hole connecting the intake hole and the discharge hole.
Here, in the present invention, the vacuum means an atmospheric pressure of 101325 Pa or less, and means that the internal space of the vacuum structure is depressurized. Moreover, when the vacuum structure is a vacuum heat insulation panel used for heat insulation, the degree of vacuum is preferably 13333 Pa to 0.013 Pa, more preferably 1333 Pa to 1.3 Pa, and still more preferably 1000 Pa to 10 Pa.
A second invention is a vacuum structure characterized in that the closing material is a screw material having a substantially T-shaped longitudinal section.
A third invention is a vacuum structure characterized in that the closing material and the surface material of the vacuum structure are welded, and a step portion is formed in the vicinity of the welded portion. Here, the stepped portion near the welded portion means a stepped portion formed near the portion in contact with the welded portion.
According to a fourth aspect of the invention, the exhaust port is formed by attaching an exhaust port forming unit that partitions the vacuum space inside the vacuum structure to a mounting hole provided on the surface of the vacuum structure, and the exhaust port forming unit is A vacuum structure having a communication hole for communicating with a vacuum space and the exhaust port.
5th invention is a vacuum heat insulation panel which consists of a vacuum structure which concerns on 1st-4th invention, It is characterized by the above-mentioned.

また、第六の発明は、表面に形成される排気口と、排気口を閉塞するための閉塞材とを有する真空構造体の封止方法であって、閉塞材は、真空構造体内部の真空空間と接する取入孔と、排気口に接続される内壁に接する排出孔と、取入孔と排出孔とを結んだ貫通穴とを備えて、排出孔を真空構造体外部空間に露呈させた状態で、真空構造体内の気体をこの貫通穴を通して外部へ排気させ、真空構造体内の気体を排気させた後、閉塞材がその排出孔を排気口内壁に隠すようにして排気口を閉塞する真空構造体の封止方法である。
第六の発明は、表面に形成される排気口と、排気口を閉塞するための閉塞材とを有する真空構造体の製造方法であって、真空構造体表面に設けられた取付孔に、真空構造体の真空空間を仕切る排気口形成ユニットを取り付けることで排気口を形成し、その形成された排気口を、閉塞材で閉塞させる真空構造体の製造方法である。
第七の発明は、前記排気口形成ユニットが、真空空間と排気口と連通するための連通孔を有することを特徴とする真空構造体の製造方法である。 The sixth invention is a method of sealing a vacuum structure having an exhaust port formed on a surface and a closing material for closing the exhaust port, wherein the closing material is a vacuum inside the vacuum structure. Provided with an intake hole in contact with the space, an exhaust hole in contact with the inner wall connected to the exhaust port, and a through hole connecting the intake hole and the exhaust hole, the exhaust hole was exposed to the external space of the vacuum structure In this state, after the gas in the vacuum structure is exhausted to the outside through this through hole, the gas in the vacuum structure is exhausted, and then the vacuum is closed by the closing material so that the exhaust hole is hidden from the inner wall of the exhaust port. It is a sealing method of a structure.
6th invention is a manufacturing method of the vacuum structure which has the exhaust port formed in the surface, and the obstruction | occlusion material for obstruct | occluding an exhaust port, Comprising: A vacuum is provided in the attachment hole provided in the vacuum structure surface. A vacuum structure manufacturing method in which an exhaust port is formed by attaching an exhaust port forming unit that partitions the vacuum space of the structure, and the formed exhaust port is closed with a closing material.
7th invention is a manufacturing method of the vacuum structure characterized by the said exhaust-port formation unit having a communicating hole for communicating with a vacuum space and an exhaust port.

本発明によれば、次のような効果を有する。
（１）真空構造体の排気口に閉塞材を備えた状態で、真空構造体内の気体を閉塞材の貫通穴を通して外部へ排出できる。そして、気体の排出後にその閉塞材で排気口を完全に閉塞させると、閉塞材に形成された排出孔が排気口内壁に隠れ、真空構造体の気密性を確実に保持できるようになる。
（２）大がかりな真空チャンバを必要とせず、簡易的な真空排気治具を用いて、真空構造体の第１封止が容易にでき、その後、大気中で第２封止が可能となる。 The present invention has the following effects.
(1) The gas in the vacuum structure can be discharged to the outside through the through hole of the blocking material in the state where the closing material is provided at the exhaust port of the vacuum structure. Then, when the exhaust port is completely closed with the plugging material after the gas is discharged, the discharge hole formed in the plugging material is hidden by the inner wall of the exhaust port, so that the airtightness of the vacuum structure can be reliably maintained.
(2) A large vacuum chamber is not required, and the first sealing of the vacuum structure can be facilitated by using a simple evacuation jig, and then the second sealing can be performed in the atmosphere.

本発明の実施形態を図面に基づいて説明する。
図１は、バルブレス真空構造体の製造技術の概要を示し、図２及び図３で、本発明の第一実施形態及び第二実施形態を示す。
なお、本実施形態では、真空構造体として真空断熱パネルを使用する。ただし、真空構造体は真空断熱パネルに限定されるものではなく、真空空間を有する構造体であれば、全て本発明の真空構造体に含まれる。また、真空断熱パネルの真空空間は外装本体の内部に形成されればよい。外装本体は、例えば、複数毎の板状の構成部材を溶接してつなぎあわせて形成されればよい。板状の構成部材は１枚の板を折曲加工して得てもよいし、プレス成形にて加工して得てもよい。 Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an outline of a manufacturing technique of a valveless vacuum structure, and FIGS. 2 and 3 show a first embodiment and a second embodiment of the present invention.
In this embodiment, a vacuum heat insulation panel is used as the vacuum structure. However, the vacuum structure is not limited to the vacuum heat insulating panel, and any structure having a vacuum space is included in the vacuum structure of the present invention. Moreover, the vacuum space of a vacuum heat insulation panel should just be formed in the inside of an exterior main body. The exterior body may be formed by, for example, welding a plurality of plate-shaped components and joining them together. The plate-like component may be obtained by bending one plate or may be obtained by press forming.

本発明において、外装本体を構成する構成部材の材料は、１００℃程度の温度に耐えられるものであれば良く、ポリエチレン、ポリプロピレンといった樹脂製、アルミナ、シリカといったセラミックス製であってもよいが、真空断熱パネルの剛性、強度、低発塵といった視点からステンレスや鉄、アルミニウムといった金属製であることが好ましい。また、外装本体を構成する構成部材の厚さは、樹脂製であれば、５ｍｍ〜３０ｍｍであることが好ましく、より好ましくは８ｍｍ〜２０ｍｍ、さらに好ましくは１０ｍｍ〜１５ｍｍであり、金属製であれば、０．２ｍｍ〜３ｍｍであることが好ましく、より好ましくは０．５ｍｍ〜２ｍｍ、さらに好ましくは０．７ｍｍ〜１．５ｍｍである。   In the present invention, the material of the constituent members constituting the exterior body may be any material that can withstand a temperature of about 100 ° C., and may be made of a resin such as polyethylene or polypropylene, or a ceramic such as alumina or silica. From the viewpoint of rigidity, strength, and low dust generation of the heat insulation panel, it is preferable that the heat insulation panel is made of metal such as stainless steel, iron, and aluminum. Moreover, if the thickness of the structural member which comprises an exterior main body is resin, it is preferable that it is 5 mm-30 mm, More preferably, it is 8 mm-20 mm, More preferably, it is 10 mm-15 mm, and if it is metal, The thickness is preferably 0.2 mm to 3 mm, more preferably 0.5 mm to 2 mm, and still more preferably 0.7 mm to 1.5 mm.

図１に示すように、真空断熱パネルを製造するためには、真空断熱パネルのパネル上面１０に設けられた排気口２０を中心として、箱形の真空装置６０を取り付ける。そして、真空装置６０の一部にゲージポート６１を備えて、真空ポンプ（図示省略）を取り付け、真空装置６０内を真空にすることで、排気口２０から真空断熱パネル内の気体を排出するものである。   As shown in FIG. 1, in order to manufacture a vacuum heat insulation panel, a box-shaped vacuum device 60 is attached around an exhaust port 20 provided on the panel upper surface 10 of the vacuum heat insulation panel. Then, a gauge port 61 is provided in a part of the vacuum device 60, a vacuum pump (not shown) is attached, and the vacuum device 60 is evacuated to discharge the gas in the vacuum heat insulation panel from the exhaust port 20. It is.

パネル上面１０と接する真空装置６０の取付片６２には真空用Ｏリング６８を備え、また、排気口２０を閉塞するための閉塞材３０を制御する制御部材６５の摺動部分にも真空用Ｏリング６９を備えて、真空装置６０内の真空状態を維持できるようにしている。   The mounting piece 62 of the vacuum device 60 in contact with the panel upper surface 10 is provided with a vacuum O-ring 68, and a vacuum O-ring is also provided on the sliding portion of the control member 65 that controls the closing member 30 for closing the exhaust port 20. A ring 69 is provided so that the vacuum state in the vacuum device 60 can be maintained.

図２に示す第一の実施形態は、真空断熱パネルのパネル上面１０にノズル１３を設けて排気口２０とし、この排気口２０を閉塞するための閉塞材３０を備えたものである。
閉塞材３０は、縦断面略Ｔ字形をしたネジ材であり、真空断熱パネル内部の真空空間１１と接するネジ部底面３１に取入孔３２を、排気口２０の内壁２１と接するネジ部側面３４に排出孔３５を形成し、この取入孔３２と排出孔３５を結んだ貫通穴３９を有する。 In the first embodiment shown in FIG. 2, a nozzle 13 is provided on the panel upper surface 10 of the vacuum heat insulating panel to form an exhaust port 20, and a closing material 30 for closing the exhaust port 20 is provided.
The closing member 30 is a screw member having a substantially T-shaped vertical cross section, and includes a screw portion bottom surface 31 in contact with the vacuum space 11 inside the vacuum heat insulating panel, an intake hole 32, and a screw portion side surface 34 in contact with the inner wall 21 of the exhaust port 20. A discharge hole 35 is formed in the first and second through holes 39 that connect the intake hole 32 and the discharge hole 35.

真空断熱パネルを真空状態にする場合には、まず、排気口２０に閉塞材３０を差し込むようにして備える。この時、閉塞材３０の排出孔３５は、排気口２０になく、真空断熱パネルの外部空間１９に露呈させた状態にする（図２（ａ））。これにより、閉塞材３０の取入孔３２から入った真空断熱パネル内の気体が貫通穴３９を通って、排出孔３５から外部空間１９へ排出される。   In order to make the vacuum heat insulating panel into a vacuum state, first, the closing material 30 is inserted into the exhaust port 20. At this time, the discharge hole 35 of the closing material 30 is not exposed to the exhaust port 20 but is exposed to the external space 19 of the vacuum heat insulating panel (FIG. 2A). Thereby, the gas in the vacuum heat insulation panel that has entered from the intake hole 32 of the closing material 30 passes through the through hole 39 and is discharged from the discharge hole 35 to the external space 19.

そして、真空断熱パネル内の気体を排気した後に、制御部材６５で閉塞材３０を締め上げ、排気口２０に閉塞材３０を螺合させて排気口２０を完全に閉塞する（図２（ｂ））。この時、閉塞材３０に形成された排出孔３５が排気口２０の内壁２１に隠れる。また、閉塞材３０のネジ頭部下面３６には環状に溝部３７が形成され、その溝部３７に真空用Ｏリング３８が取り付けられて、排気口２０の頂部２４と当接する。これらによって、真空断熱パネルの気密性を確実に保持できるようになる。   Then, after the gas in the vacuum heat insulation panel is exhausted, the closing member 30 is tightened by the control member 65, and the closing member 30 is screwed into the exhaust port 20 to completely close the exhaust port 20 (FIG. 2B). ). At this time, the discharge hole 35 formed in the closing material 30 is hidden by the inner wall 21 of the exhaust port 20. Further, a groove portion 37 is formed in an annular shape on the screw head lower surface 36 of the closing member 30, and a vacuum O-ring 38 is attached to the groove portion 37 so as to contact the top portion 24 of the exhaust port 20. As a result, the airtightness of the vacuum heat insulating panel can be reliably maintained.

図３に示す第二の実施形態は、真空断熱パネルのパネル上面１０に凹部１６を設けて排気口４０とし、この排気口４０を閉塞するための閉塞材５０を備えたものである。
閉塞材５０は、縦断面略Ｔ字形をしたネジ材であり、真空断熱パネル内部の真空空間１１と接するネジ部底面５１に取入孔５２を、排気口４０の内壁４１と接するネジ部側面５４に排出孔５５を形成し、この取入孔５２と排出孔５５を結んだ貫通穴５９を有する。 In the second embodiment shown in FIG. 3, a recess 16 is provided on the panel upper surface 10 of the vacuum heat insulating panel to form an exhaust port 40, and a closing material 50 for closing the exhaust port 40 is provided.
The closing member 50 is a screw member having a substantially T-shaped vertical cross section, and has an intake hole 52 in the screw portion bottom surface 51 in contact with the vacuum space 11 inside the vacuum heat insulating panel, and a screw portion side surface 54 in contact with the inner wall 41 of the exhaust port 40. A discharge hole 55 is formed in the first and second through holes 59 connecting the intake hole 52 and the discharge hole 55.

真空断熱パネルを真空状態にする場合には、まず、排気口４０に閉塞材５０を差し込むようにして備える。この時、閉塞材５０の排出孔５５は、排気口４０になく、真空断熱パネルの外部空間１９に露呈させた状態にする（図３（ａ））。これにより、閉塞材５０の取入孔５２から入った真空断熱パネル内の気体が貫通穴５９を通って、排出孔５５から外部空間１９へ排出される。   In order to make the vacuum heat insulating panel into a vacuum state, first, the closing material 50 is inserted into the exhaust port 40. At this time, the discharge hole 55 of the closing member 50 is not exposed to the exhaust port 40 but is exposed to the external space 19 of the vacuum heat insulating panel (FIG. 3A). Thereby, the gas in the vacuum heat insulation panel that has entered from the intake hole 52 of the closing member 50 passes through the through hole 59 and is discharged from the discharge hole 55 to the external space 19.

そして、真空断熱パネル内の気体を排気した後に、制御部材６５で閉塞材５０を締め上げ、排気口４０に閉塞材５０を螺合させて排気口４０を完全に閉塞する（図３（ｂ））。この時、閉塞材５０に形成された排出孔５５が排気口４０の内壁４１に隠れる。また、閉塞材５０のネジ頭部下面５７と排気口４０の内壁段部４２の間には真空用Ｏリング５８を備え、閉塞材５０のネジ頭部側面５６と排気口４０の内壁４１の間を溶接シール７０で溶接する。これらによって、真空断熱パネルの気密性を確実に保持できるようになる。   Then, after the gas in the vacuum heat insulation panel is exhausted, the closing member 50 is tightened by the control member 65, and the closing member 50 is screwed into the exhaust port 40 to completely close the exhaust port 40 (FIG. 3B). ). At this time, the discharge hole 55 formed in the closing member 50 is hidden by the inner wall 41 of the exhaust port 40. Further, a vacuum O-ring 58 is provided between the screw head lower surface 57 of the closing member 50 and the inner wall step portion 42 of the exhaust port 40, and between the screw head side surface 56 of the closing member 50 and the inner wall 41 of the exhaust port 40. Are welded with a welding seal 70. As a result, the airtightness of the vacuum heat insulating panel can be reliably maintained.

図４に示す第三の実施形態は、真空断熱パネルの排気口４００を閉塞した閉塞材５００と排気口４００の内壁４０１との間とが溶接され、その溶接部近傍の閉塞材５００のネジ頭部５０１に段部となる溝部５０２が形成されている。この溝部５０２によって、真空断熱パネルの剛性が発揮されて、排気口を形成したことによる真空断熱パネルの歪みなどの変形を防止できる。なお、溝部は、閉塞材５００のネジ頭部５０１に設けるのではなく、溶接部近傍の真空断熱パネルのパネル上面１００に設けてもよい。   The third embodiment shown in FIG. 4 is welded between the closing member 500 that closes the exhaust port 400 of the vacuum heat insulating panel and the inner wall 401 of the exhaust port 400, and the screw head of the closing member 500 in the vicinity of the welded portion. A groove portion 502 serving as a step portion is formed in the portion 501. Due to the grooves 502, the rigidity of the vacuum heat insulating panel is exhibited, and deformation such as distortion of the vacuum heat insulating panel due to the formation of the exhaust port can be prevented. The groove may be provided on the panel upper surface 100 of the vacuum heat insulating panel in the vicinity of the welded portion, instead of being provided on the screw head 501 of the closing member 500.

図５に示す第四の実施形態は、排気口形成ユニット４１１によって、真空断熱パネルの排気口４１０を形成するものである。すなわち、真空断熱パネルのパネル上面１００に取付孔１０１を設ける（図５（ａ））。なお、取付孔１０１の外周縁には溝部１０３を形成し、パネル上面１００に剛性をもたせている。
次に、この取付孔１０１に、断面略Ｕ字形をした筒型の排気口形成ユニット４１１を溶接７００により取り付ける（図５（ｂ））。これによって、真空断熱パネル内部の真空空間１０５は、排気口形成ユニット４１１によって仕切られることになる。なお、排気口形成ユニット４１１は、真空空間１０５と排気口４１０と連通するための連通孔４１３を有する。
そして、こうして形成された排気口４１０に、閉塞材５１０を螺合させることで、排気口４１０を完全に閉塞できる（図５（ｃ））。 In the fourth embodiment shown in FIG. 5, the exhaust port 410 of the vacuum heat insulating panel is formed by the exhaust port forming unit 411. That is, the attachment hole 101 is provided in the panel upper surface 100 of the vacuum heat insulating panel (FIG. 5A). A groove 103 is formed on the outer peripheral edge of the mounting hole 101 so that the panel upper surface 100 has rigidity.
Next, a cylindrical exhaust port forming unit 411 having a substantially U-shaped cross section is attached to the attachment hole 101 by welding 700 (FIG. 5B). As a result, the vacuum space 105 inside the vacuum heat insulation panel is partitioned by the exhaust port forming unit 411. The exhaust port forming unit 411 has a communication hole 413 for communicating with the vacuum space 105 and the exhaust port 410.
And the exhaust port 410 can be completely obstruct | occluded by screwing the obstruction | occlusion material 510 in the exhaust port 410 formed in this way (FIG.5 (c)).

本発明は、断熱用の真空断熱パネルなどバルブレスな真空構造体が要求されるものに用いることができる他、これに限らず、様々な用途の真空構造体に用いることができる発明である。   The present invention can be used not only for those requiring a valveless vacuum structure such as a vacuum insulation panel for heat insulation, but also for various types of vacuum structures.

バルブレス真空構造体の製造技術の概要を示した説明図。Explanatory drawing which showed the outline | summary of the manufacturing technique of a valveless vacuum structure. 第一実施形態を示す説明用断面図。An explanatory sectional view showing a first embodiment. 第二実施形態を示す説明用断面図。Sectional drawing for description which shows 2nd embodiment. 第三実施形態を示す説明用断面図。Sectional drawing for description which shows 3rd embodiment. 第四実施形態を示す説明用断面図。Sectional drawing for description which shows 4th embodiment.

符号の説明Explanation of symbols

１０ パネル上面 １１ 真空空間
１３ ノズル １９ 外部空間
２０ 排気口 ２１ 内壁
３０ 閉塞材 ３１ ネジ部底面
３２ 取入孔 ３４ ネジ部側面
３５ 排出孔 ３６ ネジ頭部下面
３７ 溝部 ３８ 真空用Ｏリング
３９ 貫通穴 ６５ 制御部材 DESCRIPTION OF SYMBOLS 10 Panel upper surface 11 Vacuum space 13 Nozzle 19 External space 20 Exhaust port 21 Inner wall 30 Closure material 31 Screw part bottom face 32 Intake hole 34 Screw part side surface 35 Discharge hole 36 Screw head lower surface 37 Groove part 38 Vacuum O-ring 39 Through hole 65 Control member

Claims (8)

表面に形成される排気口と、
排気口を閉塞するための閉塞材とを有する真空構造体であって、
閉塞材は、真空構造体内部の真空空間と接する取入孔と、排気口に接続される内壁に接する排出孔と、取入孔と排出孔とを結んだ貫通穴とを備えることを特徴とする真空構造体。 An exhaust port formed on the surface;
A vacuum structure having a closing material for closing the exhaust port,
The blocking material includes an intake hole that contacts a vacuum space inside the vacuum structure, a discharge hole that contacts an inner wall connected to the exhaust port, and a through hole that connects the intake hole and the discharge hole. Vacuum structure. 前記閉塞材は、縦断面略Ｔ字形をしたネジ材であることを特徴とする請求項１記載の真空構造体。   2. The vacuum structure according to claim 1, wherein the closing material is a screw material having a substantially T-shaped longitudinal section. 前記閉塞材と真空構造体の表面材とが溶接され、その溶接部近傍に段部を形成することを特徴とする請求項１又は２記載の真空構造体。   The vacuum structure according to claim 1 or 2, wherein the closing material and a surface material of the vacuum structure are welded to form a step portion in the vicinity of the welded portion. 前記排気口は、真空構造体表面に設けられた取付孔に、真空構造体内部の真空空間を仕切る排気口形成ユニットを取り付けることで形成され、その排気口形成ユニットは、真空空間と前記排気口と連通するための連通孔を有することを特徴とする請求項１から３のいずれかに記載の真空構造体。   The exhaust port is formed by attaching an exhaust port forming unit that partitions a vacuum space inside the vacuum structure to a mounting hole provided on the surface of the vacuum structure, and the exhaust port forming unit includes the vacuum space and the exhaust port. The vacuum structure according to any one of claims 1 to 3, further comprising a communication hole for communicating with the vacuum structure. 請求項１から４のいずれかに記載の真空構造体からなることを特徴とする真空断熱パネル。   A vacuum heat insulation panel comprising the vacuum structure according to any one of claims 1 to 4. 表面に形成される排気口と、排気口を閉塞するための閉塞材とを有する真空構造体の封止方法であって、
閉塞材は、真空構造体内部の真空空間と接する取入孔と、排気口に接続される内壁に接する排出孔と、取入孔と排出孔とを結んだ貫通穴とを備えて、排出孔を真空構造体外部空間に露呈させた状態で、真空構造体内の気体をこの貫通穴を通して外部へ排気させ、
真空構造体内の気体を排気させた後、閉塞材がその排出孔を排気口内壁に隠すようにして排気口を閉塞する真空構造体の封止方法。 A method of sealing a vacuum structure having an exhaust port formed on a surface and a closing material for closing the exhaust port,
The blocking material includes an intake hole that contacts the vacuum space inside the vacuum structure, a discharge hole that contacts the inner wall connected to the exhaust port, and a through hole that connects the intake hole and the discharge hole. In a state where is exposed to the external space of the vacuum structure, the gas in the vacuum structure is exhausted to the outside through this through hole,
A method of sealing a vacuum structure, wherein after exhausting the gas in the vacuum structure, the closing member closes the exhaust port so that the exhaust hole hides the exhaust hole on the inner wall of the exhaust port. 表面に形成される排気口と、排気口を閉塞するための閉塞材とを有する真空構造体の製造方法であって、
真空構造体表面に設けられた取付孔に、真空構造体の真空空間を仕切る排気口形成ユニットを取り付けることで排気口を形成し、
その形成された排気口を、閉塞材で閉塞させる真空構造体の製造方法。 A method of manufacturing a vacuum structure having an exhaust port formed on a surface and a closing material for closing the exhaust port,
An exhaust port is formed by attaching an exhaust port forming unit that partitions the vacuum space of the vacuum structure to the mounting hole provided on the surface of the vacuum structure,
A method of manufacturing a vacuum structure in which the formed exhaust port is closed with a closing material. 前記排気口形成ユニットは、真空空間と排気口と連通するための連通孔を有することを特徴とする請求項７記載の真空構造体の製造方法。   8. The method for manufacturing a vacuum structure according to claim 7, wherein the exhaust port forming unit has a communication hole for communicating with the vacuum space and the exhaust port.
JP2004297627A 2004-10-12 2004-10-12 Vacuum structural body, vacuum thermal insulation panel, sealing method for vacuum structural body, and manufacturing method for vacuum structural body Pending JP2006112451A (en)

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