JP5605939B2 - Dry ice particle injection device - Google Patents

Dry ice particle injection device Download PDF

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Publication number
JP5605939B2
JP5605939B2 JP2010076852A JP2010076852A JP5605939B2 JP 5605939 B2 JP5605939 B2 JP 5605939B2 JP 2010076852 A JP2010076852 A JP 2010076852A JP 2010076852 A JP2010076852 A JP 2010076852A JP 5605939 B2 JP5605939 B2 JP 5605939B2
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dry ice
carbon dioxide
ice particle
liquefied carbon
particle
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JP2011207663A (en
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貴樹 那須
寧伴 高木
博伸 渡邊
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Showa Denko Gas Products Co Ltd
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Showa Denko Gas Products Co Ltd
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Priority to JP2010076852A priority Critical patent/JP5605939B2/en
Priority to KR1020110014943A priority patent/KR101219501B1/en
Priority to CN201110079498.1A priority patent/CN102205288B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1413—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising a container fixed to the discharge device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B24C5/04—Nozzles therefor

Description

本発明は電気電子機器や光学部品およびそれらの加工部品や検査部品、樹脂成型品やその原材料等の洗浄、バリ取り、表面加工等で使用されるドライアイス粒子の噴射装置に関する。 The present invention relates to an apparatus for injecting dry ice particles used in cleaning, deburring, surface processing and the like of electrical and electronic equipment, optical parts, processed parts and inspection parts thereof, resin molded products and raw materials thereof.

従来、この種のドライアイス粒子の噴射装置はペレット状のドライアイスを圧縮空気に混入して噴射ノズルへ導き、該噴射ノズルより噴射させたり、液化炭酸ガスからドライアイスを形成して噴射ノズルより噴射させるものが考えられているが、前者はペレット状のドライアイスの投入作業が常時必要で、面倒であるとともに、ペレット状のドライアイスを噴射させるため、加工する物品を損傷してしまうという欠点があった。
また、後者の液化炭酸ガスからドライアイスを形成するものは、スノードライアイスと称されるものしかできず、柔らかいため、十分な洗浄効果が得られないという欠点があった。 Conventionally, this type of dry ice particle injection apparatus mixes pellet-shaped dry ice into compressed air and guides it to the injection nozzle, and injects it from the injection nozzle, or forms dry ice from liquefied carbon dioxide gas to form the dry ice from the injection nozzle. Although the one to be sprayed is considered, the former requires the operation of always charging the pellet-shaped dry ice, which is troublesome, and the pellet-shaped dry ice is sprayed, so that the article to be processed is damaged. was there.
The latter, which forms dry ice from liquefied carbon dioxide gas, can only be called snow dry ice and is soft, so there is a drawback that a sufficient cleaning effect cannot be obtained.

特開２００２−３０１６６２JP-A-2002-301662 特開２００９−２８０４１２JP2009-280412

本発明は以上のような従来の欠点に鑑み、ペレット状のドライアイスよりも硬くなく、スノードライアイスよりも硬いドライアイス粒子を、液化炭酸ガスより効率よく形成して、手間がかからない状態で噴射することができるドライアイス粒子の噴射装置を提供することを目的としている。 In view of the above-described conventional drawbacks, the present invention forms dry ice particles harder than pellet-shaped dry ice and harder than snow dry ice more efficiently than liquefied carbon dioxide, and is injected in a time-consuming state. An object of the present invention is to provide an apparatus for spraying dry ice particles.

本発明の前記ならびにそのほかの目的と新規な特徴は次の説明を添付図面と照らし合わせて読むと、より完全に明らかになるであろう。   The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.

ただし、図面はもっぱら解説のためのものであって、本発明の技術的範囲を限定するものではない。   However, the drawings are for explanation only and do not limit the technical scope of the present invention.

上記目的を達成するために、本発明は液化炭酸ガス供給源と、この液化炭酸ガス供給源に一端部が接続され、他端部にドライアイス粒子を噴射する噴射ノズルが設けられた気液炭酸ガス供給路と、この気液炭酸ガス供給路に介装された前記液化炭酸ガス供給源からの液化炭酸ガスを減圧する減圧部と、この減圧部で減圧された液化炭酸ガスでドライアイス粒子を生成するドライアイス粒子生成部と、このドライアイス粒子生成部で生成されたドライアイス粒子を前記噴射ノズルへ導くドライアイス粒子導入路とからなるドライアイス粒子の噴射装置において、前記ドライアイス粒子生成部は減圧部からの三重点圧力以上、臨界点圧力未満に減圧された気液炭酸ガス供給路に隙間なく介装された、少なくとも１個以上の透孔を有するドライアイス粒子生成エレメントを有し、該ドライアイス粒子生成エレメントの手前の圧力が三重点圧力以上、エレメント後の圧力が三重点圧力以下となるように透孔の直径が１ｍｍ以上で、長さが５ｍｍ以上に形成してドライアイス粒子の噴射装置を構成している。 In order to achieve the above object, the present invention provides a gas-liquid carbon dioxide source provided with a liquefied carbon dioxide supply source, and one end connected to the liquefied carbon dioxide supply source, and the other end provided with an injection nozzle for injecting dry ice particles. A gas supply path, a decompression section for decompressing the liquefied carbon dioxide gas from the liquefied carbon dioxide supply source interposed in the gas-liquid carbon dioxide supply path, and dry ice particles with the liquefied carbon dioxide decompressed by the decompression section In the dry ice particle injection device comprising the dry ice particle generation unit to be generated and the dry ice particle introduction path that guides the dry ice particles generated in the dry ice particle generation unit to the injection nozzle, the dry ice particle generation unit Is a dry eye having at least one or more through-holes interposed in a gas-liquid carbon dioxide supply passage that is decompressed to a pressure equal to or higher than the triple point pressure from the pressure reducing portion and lower than the critical point pressure. It has a particle generation element, and the diameter of the through-hole is 1 mm or more and the length is 5 mm or more so that the pressure before the dry ice particle generation element is not less than the triple point pressure and the pressure after the element is not more than the triple point pressure. To form a dry ice particle spraying device.

以上の説明から明らかなように、本発明にあっては次に列挙する効果が得られる。
（１）請求項１によって、ドライアイス粒子生成エレメントの手前の圧力が三重点圧力以上で、エレメント後の圧力が三重点圧力以下となるように、該ドライアイス粒子生成エレメントの透孔を形成しているので、ドライアイス粒子生成エレメントの透孔を減圧部で減圧された液化炭酸ガスが通過することで、ドライアイスを効率よく、より固く生成することができ、噴射ノズルで噴射することができる。 As is clear from the above description, the present invention has the following effects.
(1) According to claim 1, the through-holes of the dry ice particle generating element are formed so that the pressure before the dry ice particle generating element is not less than the triple point pressure and the pressure after the element is not more than the triple point pressure. Therefore, when the liquefied carbon dioxide gas decompressed by the decompression unit passes through the through-holes of the dry ice particle generating element, the dry ice can be generated efficiently and harder and can be injected by the injection nozzle. .

したがって、ペレット状のドライアイスを用いるもののように、運転中はペレット状のドライアイスを供給する作業が不要で、効率よく作業を行なうことができる。
（２）前記（１）によって、ドライアイス粒子生成エレメントで、常時均質なドライアイスを生成することができる。 Therefore, the operation | work which supplies pellet-shaped dry ice is unnecessary during operation | movement like what uses pellet-shaped dry ice, and it can work efficiently.
(2) According to the above (1), the dry ice particle generating element can always generate uniform dry ice.

したがって、噴射ノズルでのドライアイスの噴射も均質となり、均質な作業を行なうことができる。
（３）前記（１）によって、均質なドライアイスをドライアイス粒子生成エレメントで生成させることができる。
（４）請求項２も前記（１）〜（３）と同様な効果が得られるとともに、ドライアイス粒子生成エレメントで使用目的に応じたドライアイスを生成することができる。
（５）請求項３も前記（１）〜（３）と同様な効果が得られるとともに、噴射ノズルの絞り込み部で一旦絞り込み、拡張部で順次拡張してドライアイス粒子を噴射することができるので、噴射ノズルでドライアイス粒子を効率よく噴射させることができる。 Accordingly, the spraying of dry ice at the spray nozzle is also uniform, and a uniform operation can be performed.
(3) According to (1) above, homogeneous dry ice can be generated by the dry ice particle generating element.
(4) In claim 2, the same effects as in the above (1) to (3) can be obtained, and dry ice corresponding to the purpose of use can be generated by the dry ice particle generating element.
(5) According to the third aspect of the present invention, the same effects as in the above (1) to (3) can be obtained, and the dry ice particles can be sprayed by once narrowing in the narrowing part of the spray nozzle and sequentially expanding in the widening part. The dry ice particles can be efficiently ejected by the ejection nozzle.

したがって、効率のよいブラスト処理や洗浄効果が得られる。
（６）請求項４も前記（１）〜（３）、（５）と同様な効果が得られるとともに、より効率よくドライアイス粒子を噴射させることができる。
（７）請求項５は前記（１）〜（３）と同様な効果が得られるとともに、加速流体供給装置によって、噴射ノズルよりドライアイス粒子をさらに強く効率よく噴射させることができる。 Therefore, efficient blasting and cleaning effects can be obtained.
(6) According to the fourth aspect, the same effects as in the above (1) to (3) and (5) can be obtained, and the dry ice particles can be injected more efficiently.
(7) According to the fifth aspect, the same effects as in the above (1) to (3) can be obtained, and dry ice particles can be injected more strongly and efficiently than the injection nozzle by the acceleration fluid supply device.

本発明を実施するための第１の形態の概略説明図。BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing of the 1st form for implementing this invention. 本発明を実施するための第１の形態の噴射装置の説明図。Explanatory drawing of the injection device of the 1st form for carrying out the present invention. 本発明を実施するための第１の形態の噴射ノズルの説明図。Explanatory drawing of the injection | spray nozzle of the 1st form for implementing this invention. 本発明を実施するための第１の形態のドライアイス粒子生成部の説明図。Explanatory drawing of the dry ice particle production | generation part of the 1st form for implementing this invention. 図４の５−５線に沿う断面図。Sectional drawing which follows the 5-5 line of FIG. 本発明を実施するための第１の形態の使用状態の説明図。Explanatory drawing of the use condition of the 1st form for implementing this invention. 本発明を実施するための第２の形態の概略説明図。Schematic explanatory drawing of the 2nd form for implementing this invention. 本発明を実施するための第２の形態の噴射装置の説明図。Explanatory drawing of the injection device of the 2nd form for carrying out the present invention. 本発明を実施するための第２の形態のドライアイス粒子生成部の説明図。Explanatory drawing of the dry ice particle production | generation part of the 2nd form for implementing this invention. 本発明を実施するための第３の形態の概略説明図。Schematic explanatory drawing of the 3rd form for implementing this invention. 本発明を実施するための第３の形態の噴射装置の説明図。Explanatory drawing of the injection device of the 3rd form for carrying out the present invention. 本発明を実施するための第３の形態のドライアイス粒子生成部の説明図。Explanatory drawing of the dry ice particle production | generation part of the 3rd form for implementing this invention.

以下、図面に示す本発明を実施するための形態により、本発明を詳細に説明する。   Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

図１ないし図６に示す本発明を実施するための第１の形態において、１は使用する時に液化炭酸ガスよりドライアイス粒子を形成して、該ドライアイス粒子を噴射ノズル２で噴射することができる本発明のドライアイス粒子の噴射装置で、このドライアイス粒子の噴射装置１は液化炭酸ガスが充填された液化炭酸ガスボンベ３、この液化炭酸ガスボンベ３からの液化炭酸ガスを供給する開閉弁４を備える液化炭酸ガスホース５とからなる液化炭酸ガス供給源６と、この液化炭酸ガス供給源６からの液化炭酸ガスが供給されるように、前記液化炭酸ガスホース５に接続された気液炭酸ガス供給路７を備える噴射装置８とで構成されている。   In the first embodiment for carrying out the present invention shown in FIG. 1 to FIG. 6, when 1 is used, dry ice particles are formed from liquefied carbon dioxide gas, and the dry ice particles are injected by the injection nozzle 2. The dry ice particle injection device according to the present invention is a dry ice particle injection device 1 comprising a liquefied carbon dioxide gas cylinder 3 filled with liquefied carbon dioxide gas, and an on-off valve 4 for supplying liquefied carbon dioxide gas from the liquefied carbon dioxide gas cylinder 3. A liquefied carbon dioxide gas supply source 6 comprising a liquefied carbon dioxide gas hose 5 provided, and a gas-liquid carbon dioxide gas supply path connected to the liquefied carbon dioxide gas hose 5 so that the liquefied carbon dioxide gas from the liquefied carbon dioxide gas supply source 6 is supplied. 7 and an injection device 8 provided with 7.

前記噴射装置８の気液炭酸ガス供給路７には前記液化炭酸ガス供給源６から液化炭酸ガスホース５を介して供給される液化炭酸ガスを減圧する減圧部９と、この減圧部９で減圧された液化炭酸ガスでドライアイス粒子を生成するドライアイス粒子生成部１０と、このドライアイス粒子生成部１０で生成されたドライアイス粒子を、前記気液炭酸ガス供給路７の先端部に取付けられた噴射ノズル２へ導くドライアイス粒子導入路１１と、このドライアイス粒子導入路１１内へ前記ドライアイス粒子生成部１０で生成されたドライアイス粒子を、前記噴射ノズル２へ加速状態で導く加速流体供給装置１２とで構成されている。   The gas-liquid carbon dioxide supply path 7 of the injection device 8 is decompressed by the decompression unit 9 and a decompression unit 9 for decompressing the liquefied carbon dioxide gas supplied from the liquefied carbon dioxide supply source 6 via the liquefied carbon dioxide hose 5. The dry ice particle generation unit 10 that generates dry ice particles with the liquefied carbon dioxide gas, and the dry ice particles generated by the dry ice particle generation unit 10 are attached to the tip of the gas-liquid carbon dioxide supply path 7. A dry ice particle introduction path 11 that leads to the injection nozzle 2 and an accelerating fluid supply that guides the dry ice particles generated by the dry ice particle generator 10 into the dry ice particle introduction path 11 to the injection nozzle 2 in an accelerated state. The apparatus 12 is comprised.

前記噴射ノズル２の流路２ａは、図４に示すように前記ドライアイス粒子導入路１１より一旦絞り込んだ絞り込み部１３と、この絞り込み部１３より順次拡張するように形成された拡張部１４とで構成され、前記絞り込み部１３は該絞り込み部１３の導入部１３ａより排出部１３ｂが、０度を超えて９度未満の範囲で絞り込まれるとともに、該拡張部１４の導入部１４ａより排出部１４ｂが（一旦絞り込んだ部分を基準にという意味で）０度を超えて２．０度未満の範囲で拡張されている。   As shown in FIG. 4, the flow path 2 a of the injection nozzle 2 includes a narrowing portion 13 that is once narrowed from the dry ice particle introduction path 11 and an expansion portion 14 that is formed so as to be sequentially expanded from the narrowing portion 13. The narrowing portion 13 is narrowed by a discharge portion 13b from the introduction portion 13a of the narrowing portion 13 within a range of more than 0 degrees and less than 9 degrees, and the discharge portion 14b is narrowed by the introduction portion 14a of the expansion portion 14. It is expanded in the range of more than 0 degrees and less than 2.0 degrees (in the sense of once narrowed down as a reference).

前記ドライアイス粒子生成部１０は図５に示すように、前記減圧部９からの三重点圧力（０．５１８Ｍｐａ）以上、臨界点圧力未満に減圧された気液炭酸ガス供給路７にドライアイス粒子生成エレメント１５が隙間なく介装され、該ドライアイス粒子生成エレメント１５には少なくとも１個以上、本発明を実施する形態では４個の、該ドライアイス粒子生成エレメント１５の手前の圧力が三重点圧力（０．５１８Ｍｐａ）以上、エレメント１５後の圧力が三重点圧力以下となるように調節された直径１ｍｍ以上で、長さが５ｍｍ以上の透孔１６、１６，１６、１６が形成されている。   As shown in FIG. 5, the dry ice particle generating unit 10 has dry ice particles in a gas-liquid carbon dioxide supply path 7 that is depressurized to a pressure equal to or higher than the triple point pressure (0.518 Mpa) from the depressurizing unit 9 and lower than a critical point pressure. The generation element 15 is interposed without a gap, and at least one dry ice particle generation element 15 and four in the embodiment of the present invention, the pressure before the dry ice particle generation element 15 is a triple point pressure. Through holes 16, 16, 16, 16 having a diameter of 1 mm or more and a length of 5 mm or more adjusted so that the pressure after the element 15 is equal to or lower than the triple point pressure (0.518 Mpa) or more.

前記加速流体供給装置１２は前記ドライアイス粒子導入路１１内へ圧縮空気等の加速流体を供給できるように加速流体が充填された加速流体供給源１７としての加速流体充填ボンベ１８に、開閉弁１９を介して接続された加速流体供給パイプ２０で構成されている。   The accelerating fluid supply device 12 is connected to an accelerating fluid filling cylinder 18 serving as an accelerating fluid supply source 17 filled with an accelerating fluid so that an accelerating fluid such as compressed air can be supplied into the dry ice particle introduction passage 11. It is comprised by the acceleration fluid supply pipe 20 connected via.

上記構成のドライアイス粒子の噴射装置１はドライアイス粒子を噴射ノズル２より噴射してブラストや洗浄する場合、液化炭酸ガス供給源６からの液化炭酸ガスと、加速流体供給源１７からの加速流体とを噴射装置８へ供給する。   When the dry ice particle injection device 1 having the above-described configuration is used for blasting or cleaning by spraying dry ice particles from the injection nozzle 2, the liquefied carbon dioxide gas from the liquefied carbon dioxide gas supply source 6 and the acceleration fluid from the acceleration fluid supply source 17 are used. Are supplied to the injection device 8.

噴射装置８で、まず供給された液化炭酸ガスを減圧部９で減圧し、ドライアイス粒子生成部１０のドライアイス粒子生成エレメント１５の透孔１６、１６、１６、１６でドライアイス粒子に生成し、生成されたドライアイス粒子をドライアイス粒子導入路１１へ導かれた加速流体で、噴射ノズル２より加速状態で噴射させる。   In the injection device 8, the supplied liquefied carbon dioxide gas is first decompressed by the decompression unit 9, and produced into dry ice particles through the through holes 16, 16, 16, 16 of the dry ice particle production element 15 of the dry ice particle production unit 10. The generated dry ice particles are jetted in an accelerated state from the jet nozzle 2 by the accelerating fluid guided to the dry ice particle introduction path 11.

この時、噴射ノズル２の流路２ａは、一旦絞り込んだ絞り込み部１３を通過して、拡張部１４より噴射されるため、強い噴射力で、効率よくドライアイス粒子を噴射することができる。   At this time, since the flow path 2a of the injection nozzle 2 passes through the narrowed-down portion 13 and is sprayed from the expansion portion 14, dry ice particles can be efficiently sprayed with a strong spray force.

なお、使用目的に応じて、加速流体供給装置１７を用いないで、ドライアイス粒子を噴射ノズル２より噴射する使用を行なってもよい。
[発明を実施するための異なる形態]
次に、図７ないし図１２に示す本発明を実施するための異なる形態につき説明する。なお、これらの本発明を実施するための異なる形態の説明に当って、前記本発明を実施するための第１の形態と同一構成部分には同一符号を付して重複する説明を省略する。 Depending on the purpose of use, the use of spraying dry ice particles from the spray nozzle 2 without using the acceleration fluid supply device 17 may be performed.
[Different forms for carrying out the invention]
Next, different modes for carrying out the present invention shown in FIGS. 7 to 12 will be described. In the description of the different embodiments for carrying out the present invention, the same components as those in the first embodiment for carrying out the present invention are denoted by the same reference numerals, and redundant description is omitted.

図７ないし図９に示す本発明を実施するための第２の形態において、前記本発明を実施するための第１の形態と主に異なる点は、ドライアイス粒子生成エレメント１５の手前の圧力が三重点圧力以上、エレメント１５後の圧力が三重点圧力以下となるように調節された直径が１ｍｍ以上で、長さが５ｍｍ以上の１個の透孔１６が形成されたドライアイス粒子生成エレメント１５Ａを用いたドライアイス粒子生成部１０Ａを使用した噴射装置８Ａを用いた点で、このような噴射装置８Ａを用いて構成したドライアイス粒子の噴射装置１Ａにしても、前記本発明を実施するための第１の形態と同様な作用効果が得られる。   The second embodiment for carrying out the present invention shown in FIGS. 7 to 9 is mainly different from the first embodiment for carrying out the present invention in that the pressure before the dry ice particle generating element 15 is different. A dry ice particle generating element 15A in which one through hole 16 having a diameter of 1 mm or more and a length of 5 mm or more is formed so that the pressure after the element 15 is not less than the triple point pressure and not more than the triple point pressure. In order to carry out the present invention, even the dry ice particle injection device 1A configured using such an injection device 8A is used in that the injection device 8A using the dry ice particle generation unit 10A using the above is used. The same effect as the first embodiment can be obtained.

図１０ないし図１２に示す本発明を実施するための第３の形態において、前記本発明を実施するための第１の形態と主に異なる点は、加速流体供給装置を用いることなく、２個の透孔１６、１６が形成されたドライアイス粒子生成エレメント１５Ｂを用いたドライアイス粒子生成部１０Ｂを使用した噴射装置８Ｂを用いた点で、このような噴射装置８Ｂを用いて構成したドライアイス粒子の噴射装置１Ｂにしても、前記本発明を実施するための第１の形態と同様な作用効果が得られる。   The third embodiment for carrying out the present invention shown in FIGS. 10 to 12 is mainly different from the first embodiment for carrying out the present invention in that two pieces are used without using an accelerating fluid supply device. Dry ice constructed using such an injection device 8B in that the injection device 8B using the dry ice particle generation unit 10B using the dry ice particle generation element 15B in which the through holes 16 and 16 are formed is used. Even if it is the particle | grain injection apparatus 1B, the effect similar to the 1st form for implementing the said this invention is acquired.

なお、ドライアイス粒子生成エレメント１５Ｂの透孔１６、１６は長さが５ｍｍ以上あるいは直径が１ｍｍ以上であればよく、両方の条件を備えていなくてもよい。これは前記本発明の第１の形態および第２の形態でも同様である。   The through-holes 16 and 16 of the dry ice particle generating element 15B need only have a length of 5 mm or more or a diameter of 1 mm or more, and may not satisfy both conditions. The same applies to the first and second embodiments of the present invention.

また、ドライアイス粒子生成エレメントの透孔の数は、３０個未満であることが好ましい。   Moreover, it is preferable that the number of the through-holes of a dry ice particle production | generation element is less than 30 pieces.

本発明はドライアイス粒子を噴射してブラスト処理や洗浄処理等を行なうドライアイス粒子の噴射装置を製造する産業で利用される。   INDUSTRIAL APPLICABILITY The present invention is used in an industry for manufacturing a dry ice particle injection device that performs dry blasting, cleaning, etc. by injecting dry ice particles.

１、１Ａ、１Ｂ：ドライアイス粒子の噴射装置、
２：噴射ノズル、 ３：液化炭酸ガスボンベ、
４：開閉弁、 ５：液化炭酸ガスホース、
６：液化炭酸ガス供給源、 ７：気液炭酸ガス供給路、
８、８Ａ、８Ｂ：噴射装置、 ９：減圧部、
１０、１０Ａ、１０Ｂ：ドライアイス粒子生成部、
１１：ドライアイス粒子導入路、 １２：加速流体供給装置、
１３：絞り込み部、 １４：拡張部、
１５、１５Ａ、１５Ｂ：ドライアイス粒子生成エレメント、
１６：透孔、 １７：加速流体供給源、
１８：加速流体充填ボンベ、 １９：開閉弁、
２０：加速流体供給パイプ。 1, 1A, 1B: spraying device for dry ice particles,
2: injection nozzle, 3: liquefied carbon dioxide cylinder,
4: Open / close valve, 5: Liquefied carbon dioxide hose,
6: liquefied carbon dioxide supply source, 7: gas-liquid carbon dioxide supply path,
8, 8A, 8B: injection device, 9: decompression unit,
10, 10A, 10B: dry ice particle generator,
11: Dry ice particle introduction path, 12: Accelerating fluid supply device,
13: Narrowing part, 14: Expansion part,
15, 15A, 15B: dry ice particle generating element,
16: through-hole, 17: acceleration fluid supply source,
18: Accelerating fluid filling cylinder, 19: Open / close valve,
20: Acceleration fluid supply pipe.

Claims (5)

液化炭酸ガス供給源と、この液化炭酸ガス供給源に一端部が接続され、他端部にドライアイス粒子を噴射する噴射ノズルが設けられた気液炭酸ガス供給路と、この気液炭酸ガス供給路に介装された前記液化炭酸ガス供給源からの液化炭酸ガスを減圧する減圧部と、この減圧部で減圧された液化炭酸ガスでドライアイス粒子を生成するドライアイス粒子生成部と、このドライアイス粒子生成部で生成されたドライアイス粒子を前記噴射ノズルへ導くドライアイス粒子導入路とからなるドライアイス粒子の噴射装置において、前記ドライアイス粒子生成部は減圧部からの三重点圧力以上、臨界点圧力未満に減圧された気液炭酸ガス供給路に隙間なく介装された、少なくとも１個以上の透孔を有するドライアイス粒子生成エレメントを有し、該ドライアイス粒子生成エレメントの手前の圧力が三重点圧力以上、エレメント後の圧力が三重点圧力以下となるように透孔の直径が１ｍｍ以上で、長さが５ｍｍ以上に形成されていることを特徴とするドライアイス粒子の噴射装置。 A liquefied carbon dioxide gas supply source, a gas / liquid carbon dioxide gas supply path having one end connected to the liquefied carbon dioxide gas supply source and an injection nozzle for injecting dry ice particles at the other end, and the gas / liquid carbon dioxide gas supply A depressurizing unit for depressurizing the liquefied carbon dioxide gas from the liquefied carbon dioxide supply source interposed in the passage; a dry ice particle generating unit for generating dry ice particles with the liquefied carbon dioxide depressurized by the depressurizing unit; and In a dry ice particle injection device comprising a dry ice particle introduction path that guides dry ice particles generated in an ice particle generation unit to the injection nozzle, the dry ice particle generation unit is more than a triple point pressure from a decompression unit, and is critical. A dry ice particle generating element having at least one or more through-holes interposed in a gas-liquid carbon dioxide supply passage that has been depressurized to a pressure lower than the point pressure without any gap. Ice particles before the pressure generation element is the triple point pressure or a feature that the pressure after the element is a diameter of the through hole such that the triple point pressure less 1mm or more, is formed over 5mm in length Dry ice particle injection device. ドライアイス粒子生成エレメントには３０個未満の透孔が形成されていることを特徴とする請求項１記載のドライアイス粒子の噴射装置。 2. The dry ice particle jetting device according to claim 1, wherein the dry ice particle generating element has less than 30 through holes. 前記噴射ノズルの流路は一旦絞り込んだ絞り込み部と、この絞り込み部より順次拡張するように形成された拡張部とで構成されていることを特徴とする請求項１記載のドライアイス粒子の噴射装置。 2. The dry ice particle spraying apparatus according to claim 1, wherein the flow path of the spray nozzle is composed of a narrowed-down part once narrowed and an extended part formed so as to expand sequentially from the narrowed-down part. . 噴射ノズルの絞り込み部は、該絞り込み部の導入部より０度を超えて９度未満の範囲で絞り込まれるとともに、該拡張部の導入部（一旦絞り込んだ部分を基準にという意味で）０度を超えて２．０度未満の範囲で拡張されていることを特徴とする請求項４記載のドライアイス粒子の噴射装置。 The narrowing portion of the injection nozzle is narrowed within a range of more than 0 degrees and less than 9 degrees from the introduction portion of the narrowing portion, and the introduction portion of the expansion portion (in the sense that the narrowed-down portion is used as a reference) is set to 0 degree. 5. The dry ice particle spraying device according to claim 4, wherein the spraying device is expanded within a range exceeding 2.0 degrees. ドライアイス粒子生成部で生成されたドライアイス粒子を噴射ノズルへ加速状態で導くドライアイス粒子導入路に接続された加速流体供給装置が取付けられていることを特徴とする請求項１記載のドライアイス粒子の噴射装置。 2. The dry ice according to claim 1, further comprising an accelerating fluid supply device connected to a dry ice particle introduction path for guiding the dry ice particles generated in the dry ice particle generating unit to the injection nozzle in an accelerated state. Particle injection device.
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