JP6696175B2 - Capacitor - Google Patents
Capacitor Download PDFInfo
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- JP6696175B2 JP6696175B2 JP2015256554A JP2015256554A JP6696175B2 JP 6696175 B2 JP6696175 B2 JP 6696175B2 JP 2015256554 A JP2015256554 A JP 2015256554A JP 2015256554 A JP2015256554 A JP 2015256554A JP 6696175 B2 JP6696175 B2 JP 6696175B2
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- Japan
- Prior art keywords
- desiccant
- refrigerant
- heat exchange
- nonwoven fabric
- exchange tubes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003990 capacitor Substances 0.000 title claims description 6
- 239000002274 desiccant Substances 0.000 claims description 66
- 239000003507 refrigerant Substances 0.000 claims description 60
- 239000004745 nonwoven fabric Substances 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000005022 packaging material Substances 0.000 claims description 16
- 238000004781 supercooling Methods 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 13
- 238000005057 refrigeration Methods 0.000 claims description 10
- 229920003043 Cellulose fiber Polymers 0.000 claims description 3
- 229920000297 Rayon Polymers 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 239000002964 rayon Substances 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims 1
- 229920005989 resin Polymers 0.000 description 26
- 239000011347 resin Substances 0.000 description 26
- 229910021536 Zeolite Inorganic materials 0.000 description 19
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 19
- 239000010457 zeolite Substances 0.000 description 19
- 239000011148 porous material Substances 0.000 description 15
- 239000002808 molecular sieve Substances 0.000 description 13
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- -1 polybutylene terephthalate Polymers 0.000 description 5
- 239000004594 Masterbatch (MB) Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- 229930182556 Polyacetal Natural products 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 229920010524 Syndiotactic polystyrene Polymers 0.000 description 2
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920001955 polyphenylene ether Polymers 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- RXPKHKBYUIHIGL-UHFFFAOYSA-L calcium;12-hydroxyoctadecanoate Chemical compound [Ca+2].CCCCCCC(O)CCCCCCCCCCC([O-])=O.CCCCCCC(O)CCCCCCCCCCC([O-])=O RXPKHKBYUIHIGL-UHFFFAOYSA-L 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- HGPXWXLYXNVULB-UHFFFAOYSA-M lithium stearate Chemical compound [Li+].CCCCCCCCCCCCCCCCCC([O-])=O HGPXWXLYXNVULB-UHFFFAOYSA-M 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Description
本発明は、自動車用エアコンの冷凍サイクルを構成するサブクール式のコンデンサ（以下、サブクールコンデンサ）に関するものである。 The present invention relates to a subcool type condenser (hereinafter, subcool condenser) that constitutes a refrigeration cycle of an automobile air conditioner.
自動車用エアコン用の冷凍サイクルは、コンプレッサー、コンデンサ、膨張弁およびエバポレータを中空管で連結して構成される。通常、コンデンサ内で凝縮した冷媒は過冷却度が不充分であり、下流側での僅かな受熱や圧損によって気化する不安定な状態にあり、このために冷凍サイクルの効率低下や変動を生じ易い。この対策として、コンデンサによる凝縮を経た冷媒を更に凝縮温度よりも５〜８℃程度低い温度まで過冷却するサブクール部を設け、液冷媒として安定化した状態で蒸発器側へ送る方法が知られている（例えば、特許文献１）。このサブクール部は、空間効率の観点から、コンデンサに一体に組み込んだ構成（サブクールコンデンサ）とすることが多い。 A refrigeration cycle for an automobile air conditioner is configured by connecting a compressor, a condenser, an expansion valve and an evaporator with a hollow pipe. Usually, the refrigerant condensed in the condenser has an insufficient degree of supercooling and is in an unstable state where it is vaporized due to slight heat reception or pressure loss on the downstream side, which easily causes a reduction in efficiency or fluctuation of the refrigeration cycle. .. As a countermeasure against this, there is known a method in which a subcool section is provided for supercooling the refrigerant that has been condensed by the condenser to a temperature lower by about 5 to 8 ° C than the condensation temperature, and is sent to the evaporator side in a stable state as a liquid refrigerant. (For example, Patent Document 1). From the viewpoint of space efficiency, the subcool section is often configured as a unit integrated with a capacitor (subcool condenser).
サブクールコンデンサは、通常、並列配置された複数の熱交換管と、熱交換管の左右両端部と連通するヘッダタンクとを備え、熱交換管のうち、上方の複数の熱交換管により冷媒凝縮パスを構成し、下方の複数の熱交換管により冷媒過冷却パスを構成している。前記の冷媒凝縮パスでは、冷媒の凝縮が行われ、冷媒過冷却パスでは、冷媒の過冷却が行われる。 The subcool condenser usually includes a plurality of heat exchange tubes arranged in parallel and a header tank that communicates with the left and right ends of the heat exchange tubes. And a plurality of heat exchange tubes below form a refrigerant supercooling path. In the refrigerant condensing path, the refrigerant is condensed, and in the refrigerant supercooling path, the refrigerant is supercooled.
冷凍サイクル中に水分が含まれていると膨脹弁の細孔で凍結して冷媒の流れを阻害したり、冷凍装置の機能部品を腐蝕させるおそれがあるため、冷凍サイクル中には、乾燥剤を配置することが好ましく、例えば、特許文献１には、前記のヘッダタンクのうち、冷媒凝縮パスを経た冷媒を流入させて、過冷却パスへと流出させるヘッダタンク内に、ビーズ状の乾燥剤を充填した乾燥剤充填容器を配置した構造が開示されている。この乾燥剤によって、冷媒中に混入した水分が除去される。 If water is contained in the refrigeration cycle, it may freeze in the pores of the expansion valve and block the flow of the refrigerant, or corrode the functional parts of the refrigeration system. It is preferable to arrange them. For example, in Patent Document 1, in the header tank, a bead-shaped desiccant is introduced into a header tank into which a refrigerant having passed through a refrigerant condensing path is caused to flow and to be discharged to a supercooling path. A structure is disclosed in which a filled desiccant-filled container is arranged. The desiccant removes water mixed in the refrigerant.
乾燥剤による水分除去能力は、使用される乾燥剤の量に比例するが、ヘッダタンク内の限られたスペースに封入できる乾燥剤の容量には限界がある。
乾燥剤の封入量を増加させることなく、サブクールコンデンサの水分除去能力向上を求める手段として、封入する乾燥剤自体の吸湿能力を改善する方法が考えられる。最近では、自動車用エアコンの冷凍サイクル内で使用される乾燥剤には特に高い硬度が求められ、この硬度と更に高い吸湿能力を両立させた乾燥剤が開発されて来てはいるものの、更なる性能向上が求められている。
また、ヘッダタンクを大型化して乾燥剤の封入量増加を図ることは可能であるが、ヘッダタンクの大型化は、車体の限られた空間を有効利用するといった観点や、車載設備の軽量化を図るといった観点から好ましくない。
The ability of the desiccant to remove water is proportional to the amount of desiccant used, but the capacity of the desiccant that can be enclosed in the limited space in the header tank is limited.
A method for improving the moisture absorption capacity of the enclosed desiccant itself can be considered as a means for increasing the water removal capacity of the subcool condenser without increasing the amount of the desiccant enclosed. Recently, a particularly high hardness is required for a desiccant used in the refrigeration cycle of an automobile air conditioner, and although a desiccant having both this hardness and a higher moisture absorption capacity has been developed, Performance improvement is required.
Also, it is possible to increase the size of the header tank to increase the amount of desiccant enclosed, but increasing the size of the header tank reduces the weight of onboard equipment and makes effective use of the limited space of the vehicle body. It is not preferable from the viewpoint of trying.
本発明の目的は、上記の問題を解決し、従来ヘッダタンク内で使用されていた乾燥剤を、種類も封入量も変えることなく、そのまま使用した場合であっても、サブクールコンデンサにおける水分除去能力を向上させることができる技術を提供することである。 The object of the present invention is to solve the above-mentioned problems, and to use the desiccant that has been conventionally used in the header tank without changing the type and the enclosed amount, as it is, to remove moisture in the subcool condenser. It is to provide a technology that can improve.
本発明では、上記の課題を解決するための手段として、冷凍サイクルを構成するコンデンサにおいて、並列配置された複数の熱交換管と、熱交換管の左右両端部が接続されたヘッダタンクとを備え、前記熱交換管のうち、上方の複数の熱交換管により冷媒凝縮パスを構成し、下方の複数の熱交換管により冷媒過冷却パスを構成し、前記ヘッダタンクのうち、前記冷媒凝縮パスを経た冷媒を流入させて、前記過冷却パスへと流出させるヘッダタンク内に、乾燥剤を充填した包材を配置し、この包材が、パウダー状乾燥剤が分散された吸湿性樹脂もしくは、パウダー状乾燥剤を添着させた吸湿性不織布の少なくとも何れかである構成を採用した。 In the present invention, as a means for solving the above problems, in a condenser that constitutes a refrigeration cycle, a plurality of heat exchange tubes arranged in parallel and a header tank to which both left and right ends of the heat exchange tubes are connected are provided. Of the heat exchange tubes, a plurality of upper heat exchange tubes constitutes a refrigerant condensing path, a plurality of lower heat exchange tubes constitutes a refrigerant supercooling path, and the header tank comprises the refrigerant condensing path. After passing through the refrigerant, in the header tank for flowing out to the supercooling path, a packaging material filled with a desiccant is arranged, and this packaging material is a hygroscopic resin or powder in which a powdery desiccant is dispersed. A hygroscopic non-woven fabric impregnated with a drying agent is used.
前記パウダー状乾燥剤は、ゼオライトであることが好ましい。 The powdery desiccant is preferably zeolite.
前記吸湿性樹脂は、ゼオライトと熱可塑性樹脂を含有することが好ましい。この熱可塑性樹脂は、軟化点が７０℃以上であることが好ましく、ポリアセタール、ポリアミド、ポリカーボネート、変性ポリフェニレンエーテル、ポリブチレンテレフタレート、超高分子量ポリエチレン、シンジオタクチックポリスチレンの少なくとも何れかであることがより好ましい。 The hygroscopic resin preferably contains zeolite and a thermoplastic resin. The thermoplastic resin preferably has a softening point of 70 ° C. or higher and is at least any one of polyacetal, polyamide, polycarbonate, modified polyphenylene ether, polybutylene terephthalate, ultrahigh molecular weight polyethylene, and syndiotactic polystyrene. preferable.
前記吸湿性不織布が、不織布原紙の重量に対して、パウダー状乾燥剤を１０〜７０％含有する不織布であることが好ましく、前記吸湿性不織布を構成する繊維が、アラミド繊維、ガラス繊維、セルロース繊維、ナイロン繊維、ポリエステル繊維、ポリオレフィン繊維、レーヨン繊維の少なくとも何れかを含むことが好ましい。 The hygroscopic non-woven fabric is preferably a non-woven fabric containing 10 to 70% of a powdery desiccant with respect to the weight of the non-woven fabric base paper, and the fibers constituting the hygroscopic non-woven fabric are aramid fibers, glass fibers, and cellulose fibers. It is preferable to include at least one of nylon fiber, polyester fiber, polyolefin fiber, and rayon fiber.
上記構成からなる本発明では、サブクールコンデンサのヘッダタンク内に配置される乾燥剤を収容する包材を、吸湿性樹脂もしくは吸湿性不織布で作成しているため、冷媒中に混入している水分を、従来の成型された乾燥剤のほか、パウダー状乾燥剤が分散された吸湿性樹脂もしくは、パウダー状乾燥剤を添着させた吸湿性不織布からなる包材によっても除去することができる。このため、本発明によれば、従来ヘッダタンク内で使用されていた乾燥剤を、種類も封入量も変えることなく、そのまま使用した場合であっても、サブクールコンデンサにおける水分除去能力を向上させることができる。 In the present invention having the above-described configuration, since the packaging material containing the desiccant to be placed in the header tank of the subcool condenser is made of a hygroscopic resin or a hygroscopic nonwoven fabric, moisture mixed in the refrigerant is prevented. In addition to the conventional molded desiccant, a hygroscopic resin in which a powdery desiccant is dispersed or a packaging material made of a hygroscopic nonwoven fabric impregnated with the powdery desiccant can be removed. Therefore, according to the present invention, it is possible to improve the water removal capability of the subcool condenser even when the desiccant that has been conventionally used in the header tank is used as it is without changing the type and the enclosed amount. You can
本発明は、冷凍サイクルを構成するコンデンサにおいて、並列配置された複数の熱交換管と、熱交換管の左右両端部と連通するヘッダタンクとを備え、前記熱交換管のうち、上方の複数の熱交換管により冷媒凝縮パスを構成し、下方の複数の熱交換管により冷媒過冷却パスを構成し、前記ヘッダタンクのうち、前記冷媒凝縮パスを経た冷媒を流入させて、前記過冷却パスへと流出させるヘッダタンク内に、乾燥剤を充填した包材を配置し、この包材が、パウダー状乾燥剤が分散された吸湿性樹脂もしくは、パウダー状乾燥剤を添着させた吸湿性不織布の少なくとも何れかである構成としたものである。以下、本発明の実施の形態について、図面を参照しながら説明する。 The present invention, in a condenser that constitutes a refrigeration cycle, includes a plurality of heat exchange tubes arranged in parallel and a header tank that communicates with the left and right ends of the heat exchange tube. A refrigerant condensing path is constituted by a heat exchange tube, a refrigerant supercooling path is constituted by a plurality of heat exchange tubes below, and in the header tank, the refrigerant having passed through the refrigerant condensing path is caused to flow into the supercooling path. A packing material filled with a desiccant is arranged in the header tank to be discharged, and the packing material is at least a hygroscopic resin in which a powdery desiccant is dispersed or a hygroscopic nonwoven fabric impregnated with the powdery desiccant. Either of these configurations is adopted. Hereinafter, embodiments of the present invention will be described with reference to the drawings.
図１に示すように、本実施形態のコンデンサは、冷媒が流通する扁平状の複数本の熱交換管１が長手方向（水平方向）に設けられ、その各熱交換管１間には、冷媒と空気との熱交換を促進する波状のフィン２が配設されており、このフィン２および熱交換管１により冷媒と空気とを熱交換させる熱交換管路が並列配置された熱交換パス（図２に示す冷媒凝縮パス３、冷媒過冷却パス４）を形成している。 As shown in FIG. 1, in the condenser of the present embodiment, a plurality of flat heat exchange tubes 1 through which the refrigerant flows are provided in the longitudinal direction (horizontal direction), and the refrigerant is placed between the heat exchange tubes 1. A wavy fin 2 that promotes heat exchange between the heat exchanger and the air is provided, and a heat exchange path (in which heat exchange pipes that perform heat exchange between the refrigerant and the air by the fin 2 and the heat exchange pipe 1 are arranged in parallel is arranged ( The refrigerant condensing path 3 and the refrigerant supercooling path 4) shown in FIG. 2 are formed.
また、熱交換管１の両端側には、熱交換管の長手方向（水平方向）と直交する方向（垂直方向）に延びて複数本の熱交換管１と連通するヘッダータンク５、６、７を配設している。そして、ヘッダータンク５には、冷媒入口部８が設けられ、ヘッダータンク６には、冷媒出口部９が設けられている。ヘッダータンク６には、仕切り板１０が設けられている。冷媒入口部８から流入した冷媒は、図中に示す矢印ａから矢印ｋの順に流れて、冷媒出口部９から流出する。 In addition, header tanks 5, 6, 7 that extend in the direction (vertical direction) orthogonal to the longitudinal direction (horizontal direction) of the heat exchange tubes and communicate with the plurality of heat exchange tubes 1 are provided on both ends of the heat exchange tubes 1. Are installed. Then, the header tank 5 is provided with a refrigerant inlet portion 8, and the header tank 6 is provided with a refrigerant outlet portion 9. The header tank 6 is provided with a partition plate 10. The refrigerant flowing in from the refrigerant inlet portion 8 flows in the order of arrow a to arrow k shown in the figure, and flows out from the refrigerant outlet portion 9.
熱交換パスは、冷媒の凝縮が行われる冷媒凝縮パス３（図２中に示す矢印ｂから矢印ｇまで）と、凝縮されて気液混合状態となった冷媒の過冷却が行われる冷媒過冷却パス４（図中に示す矢印ｈから矢印ｊまで）とに区分されている。 The heat exchange path includes a refrigerant condensing path 3 (from arrow b to arrow g shown in FIG. 2) in which the refrigerant is condensed, and a refrigerant supercooling in which the condensed refrigerant is supercooled in a gas-liquid mixed state. It is divided into path 4 (from arrow h to arrow j in the figure).
ヘッダタンクのうち、前記冷媒凝縮パスを経た冷媒を流入させて、前記過冷却パスへと流出させるヘッダタンク７内には、ビーズ状の乾燥剤を充填した包材１１が配置されている。本明細書において、「ビーズ状」とは、平均粒径０．５〜４．８ｍｍ程度（４〜３５メッシュ程度）の球状の成形体（原料粉末を圧縮成形したもの）を意味する。
乾燥剤に冷媒（例えば、代替フロン）が吸着されると発熱が生じるため、乾燥剤は、０．２８ｎｍ（２．８Å）の分子径を有する水分子は吸着され、冷媒は吸着されない有効細孔径を有するものであることが好ましい。
冷媒がフッ素系ガスの場合、フッ素系ガス分子は、ゼオライトの有効細孔径５Å以上で取り込まれやすくなるため、有効細孔径が３〜４Åのゼオライトが好ましい。具体的には、有効細孔径３Åの３Ａ型ゼオライトもしくは有効細孔径４Åの４Ａ型ゼオライトが好適である。本明細書において有効細孔径は、定容量式ガス吸着法により測定される細孔径であり、定容量式ガス吸着法に使用する吸着ガスとしては、Ｎ２、ＣＯ２、ＣＨ４、Ｈ２等が挙げられる。
A packing material 11 filled with a bead-shaped desiccant is arranged in the header tank 7 of the header tank, which allows the refrigerant having passed through the refrigerant condensing path to flow in and flow out to the supercooling path. In the present specification, the “bead shape” means a spherical shaped body (a raw material powder is compression-molded) having an average particle diameter of about 0.5 to 4.8 mm (about 4 to 35 mesh).
Since heat is generated when a refrigerant (for example, CFC substitute) is adsorbed to the desiccant, the desiccant adsorbs water molecules having a molecular diameter of 0.28 nm (2.8 Å) and does not adsorb the refrigerant. Is preferred.
When the refrigerant is a fluorine-based gas, the fluorine-based gas molecules are easily taken in when the effective pore diameter of the zeolite is 5 Å or more. Therefore, zeolite having an effective pore diameter of 3 to 4 Å is preferable. Specifically, 3A-type zeolite having an effective pore diameter of 3Å or 4A-type zeolite having an effective pore diameter of 4Å is suitable. In the present specification, the effective pore diameter is a pore diameter measured by a constant volume gas adsorption method, and the adsorption gas used in the constant volume gas adsorption method includes N 2 , CO 2 , CH 4 , H 2 and the like. Is mentioned.
本発明では、この包材を、パウダー状乾燥剤が分散された吸湿性樹脂もしくは、パウダー状乾燥剤を添着させた吸湿性不織布の少なくとも何れかで構成している。 In the present invention, the packaging material is composed of at least one of a hygroscopic resin in which a powdery desiccant is dispersed or a hygroscopic nonwoven fabric to which a powdery desiccant is attached.
（吸湿性樹脂）
吸湿性樹脂は、冷媒に含まれた水分を吸着するパウダー状乾燥剤を樹脂中に分散させた合成樹脂である。本明細書において、「パウダー状」とは、粒径０．１〜６０μｍ程度の粉末状を意味する。パウダー状乾燥剤の平均粒径（ｄ５０）は、樹脂との混合の観点から、より好ましくは１〜１０μｍ、更に好ましくは２〜５μｍである。
(Hygroscopic resin)
The hygroscopic resin is a synthetic resin in which a powdery desiccant that adsorbs water contained in the refrigerant is dispersed in the resin. In the present specification, the "powder form" means a powder form having a particle size of about 0.1 to 60 µm. The average particle diameter (d50) of the powdery desiccant is more preferably 1 to 10 μm, further preferably 2 to 5 μm from the viewpoint of mixing with the resin.
パウダー状乾燥剤は、ゼオライトであることが好ましい。 The powdery desiccant is preferably zeolite.
上記のビーズ状乾燥剤と同様に、パウダー状乾燥剤に冷媒（例えば、代替フロン）が吸着されると発熱が生じるため、パウダー状乾燥剤は、０．２８ｎｍ（２．８Å）の分子径を有する水分子は吸着され、冷媒は吸着されない有効細孔径を有するものであることが好ましく、有効細孔径が３〜４Åのゼオライトが好ましい。具体的には、有効細孔径３Åの３Ａ型ゼオライトもしくは有効細孔径４Åの４Ａ型ゼオライトが好適である。但し、使用する冷媒の種類によって、ゼオライトに冷媒が吸着しないように、ゼオライトの有効細孔径の大きさに注意する必要がある。 Like the above bead-shaped desiccant, heat is generated when a refrigerant (for example, CFC substitute) is adsorbed to the powder-shaped desiccant, so the powder-shaped desiccant has a molecular diameter of 0.28 nm (2.8Å). It is preferable that the water molecules are adsorbed and the refrigerant is not adsorbed, and that the effective pore size is 3 to 4Å. Specifically, 3A-type zeolite having an effective pore diameter of 3Å or 4A-type zeolite having an effective pore diameter of 4Å is suitable. However, depending on the type of the refrigerant used, it is necessary to pay attention to the size of the effective pore diameter of the zeolite so that the refrigerant does not adsorb to the zeolite.
カーエアコンの冷凍サイクルでは、冷媒が６０℃程度の高温に晒される事もあるため、パウダー状乾燥剤を分散させる樹脂としては、軟化点が７０℃以上のエンジニアリング・プラスチックが好ましく、ポリアセタール、ポリアミド、ポリカーボネート、変性ポリフェニレンエーテル、ポリブチレンテレフタレート、超高分子量ポリエチレン、シンジオタクチックポリスチレンの少なくとも何れかが好適である。 In the refrigeration cycle of a car air conditioner, the refrigerant may be exposed to a high temperature of about 60 ° C. Therefore, as a resin for dispersing the powdery desiccant, an engineering plastic having a softening point of 70 ° C. or higher is preferable, and polyacetal, polyamide, At least one of polycarbonate, modified polyphenylene ether, polybutylene terephthalate, ultra high molecular weight polyethylene, and syndiotactic polystyrene is suitable.
吸湿性樹脂には、パウダー状乾燥剤を樹脂中に均一に分散させる目的で、分散剤を配合することができる。このような分散剤としては、一般に、ステアリン酸亜鉛、ステアリン酸マグネシウム、ステアリン酸リチウム、ステアリン酸アルミニウム、ステアリン酸カルシウム、１２−ヒドロキシステアリン酸カルシウム等の金属石ケンや、エチレンビスステアリルアマイド、低分子量ポリエチレンワックス、流動パラフィン、パラフィン合成ワックス、ポリプロピレンワックス、シリコーンオイル等を挙げることができる。これらの分散剤は、一般に、樹脂成分１００ｇ当り０．５〜５ｇ、特に１〜３ｇ使用される。その他、吸湿性や成形性等を損なわない限りの量で、それ自体公知の各種配合剤、例えば滑剤、帯電防止剤、酸化防止剤等を適宜配合することもできる。 A dispersant can be added to the hygroscopic resin for the purpose of uniformly dispersing the powdery desiccant in the resin. Such dispersants are generally zinc stearate, magnesium stearate, lithium stearate, aluminum stearate, calcium stearate, metallic soaps such as calcium 12-hydroxystearate, ethylenebisstearyl amide, and low molecular weight polyethylene wax. , Liquid paraffin, paraffin synthetic wax, polypropylene wax, silicone oil and the like. These dispersants are generally used in an amount of 0.5 to 5 g, especially 1 to 3 g per 100 g of the resin component. In addition, various compounding agents known per se, such as lubricants, antistatic agents, and antioxidants, may be appropriately compounded in an amount that does not impair hygroscopicity, moldability, and the like.
吸湿性樹脂からなる包材１１は、上記のパウダー状乾燥剤と樹脂を混練してマスターバッチとした後、パウダー状乾燥剤含有マスターバッチをそのまま、あるいは、樹脂と混合してメッシュ状の包材を作成する。当該マスターバッチは、パウダー状乾燥剤を好ましくは１０〜７０質量％、より好ましくは２０〜７０質量％、さらに好ましくは３０〜７０質量％の割合で含有するものである。
パウダー状乾燥剤の含有量は、好ましくは１０〜７０質量％、より好ましくは２０〜７０質量％、さらに好ましくは３０〜７０質量％である。
パウダー状乾燥剤の含有量が少なすぎると所望の吸水性能が発現しない恐れがあるが、上記範囲とすることにより、所望の吸水性能を確実に発現させることができる。
一方、パウダー状乾燥剤の含有量が多すぎると、パウダー状乾燥剤が冷媒中に落下する可能性が高まる他、吸湿性樹脂の物性（強度等）が低下する恐れがあるが、上記範囲とすることにより、これらのリスクを確実に回避することができる。
The packaging material 11 made of a hygroscopic resin is a masterbatch obtained by kneading the above powdery desiccant and resin into a masterbatch, and then the powdery desiccant-containing masterbatch as it is or mixed with a resin to form a mesh-shaped packaging material. To create. The masterbatch contains the powdery desiccant in a proportion of preferably 10 to 70% by mass, more preferably 20 to 70% by mass, and further preferably 30 to 70% by mass.
The content of the powdery desiccant is preferably 10 to 70% by mass, more preferably 20 to 70% by mass, and further preferably 30 to 70% by mass.
If the content of the powdery desiccant is too small, the desired water absorption performance may not be exhibited, but if the content is within the above range, the desired water absorption performance can be reliably exhibited.
On the other hand, if the content of the powdery desiccant is too high, the possibility that the powdery desiccant will fall into the refrigerant increases, and the physical properties (strength, etc.) of the hygroscopic resin may decrease, but within the above range. By doing so, these risks can be reliably avoided.
次に、具体的な例を用いて本実施の形態による効果を説明する。パウダー状乾燥剤にはモレキュラーシーブ３Ａパウダー（ユニオン昭和株式会社製）を用い、パウダー状乾燥剤を分散させる樹脂にはポリカーボネート樹脂を用いて、吸湿性樹脂からなるメッシュ状の包材１１を作成する。 Next, the effect of this embodiment will be described using a specific example. A molecular sieve 3A powder (manufactured by Union Showa Co., Ltd.) is used as a powdery desiccant, and a polycarbonate resin is used as a resin in which the powdery desiccant is dispersed to form a mesh-shaped packaging material 11 made of a hygroscopic resin. ..
包材１１は、車の大きさによってサイズが異なるが、通常１０〜１００ｇ程度のビーズ状ゼオライトを封入することができるサイズのものが多い。モレキュラーシーブの吸水量は、モレキュラーシーブの質量に対して、最大２０％であるので、例えば、モレキュラーシーブ３Ａパウダーを樹脂の重量に対して１０ｇ含有させた場合、従来技術（本発明の吸湿性を有さない通常の樹脂）を用いた場合に比べて、吸水量を最大２g程度向上させることができる。 The packaging material 11 varies in size depending on the size of the vehicle, but in many cases, it is usually a size capable of encapsulating 10 to 100 g of beaded zeolite. Since the water absorption of the molecular sieve is up to 20% with respect to the mass of the molecular sieve, for example, when 10 g of the molecular sieve 3A powder is contained with respect to the weight of the resin, the prior art (the hygroscopicity of the present invention The water absorption amount can be improved by up to about 2 g as compared with the case of using a normal resin which does not have it.
（吸湿性不織布）
吸湿性不織布は、冷媒に含まれた水分を吸着するパウダー状乾燥剤を不織布に添着させたものである。不織布を構成する繊維は、アラミド繊維、ガラス繊維、セルロース繊維、ナイロン繊維、ポリエステル繊維、ポリオレフィン繊維、レーヨン繊維の少なくとも何れから選択される繊維を含むことが好ましい。
ゼオライトを不織布に添着させる方法としては、例えば、不織布に対し、ゼオライトを有機溶剤とバインダーに分散させたものに浸漬させたり、吹き付ける等して添着させた後、乾燥機にて乾燥する工程を経ることによって固定化することができる。
添着させる工程後、乾燥工程にてある程度の水分は除去可能であるが、湿度をコントロールした室内やドライボックス内で実施することがより望ましい。
(Hygroscopic non-woven fabric)
The hygroscopic non-woven fabric is a non-woven fabric to which a powdery desiccant which adsorbs water contained in the refrigerant is attached. The fibers constituting the non-woven fabric preferably include at least any fiber selected from aramid fibers, glass fibers, cellulose fibers, nylon fibers, polyester fibers, polyolefin fibers and rayon fibers.
As a method of impregnating the zeolite to the non-woven fabric, for example, the non-woven fabric is immersed in a dispersion of the organic solvent and binder in the zeolite, or after being sprayed and impregnated, through a step of drying in a dryer It can be fixed.
Although a certain amount of water can be removed in the drying step after the attaching step, it is more preferable to carry out the step in a room where the humidity is controlled or in a dry box.
パウダー状乾燥剤は、ゼオライトであることが好ましい。 The powdery desiccant is preferably zeolite.
上記のビーズ状乾燥剤と同様に、パウダー状乾燥剤に冷媒（例えば、代替フロン）が吸着されると発熱が生じるため、パウダー状乾燥剤は、パウダー状乾燥剤は、０．２８ｎｍ（２．８Å）の分子径を有する水分子は吸着され、冷媒は吸着されない有効細孔径を有するものであることが好ましく、有効細孔径が３〜４Åのモレキュラーシーブが好ましい。具体的には、有効細孔径３Åの３Ａ型ゼオライトもしくは有効細孔径４Åの４Ａ型ゼオライトが好適である。 Like the above-mentioned bead-shaped desiccant, heat is generated when a refrigerant (for example, CFC substitute) is adsorbed to the powder-shaped desiccant, so that the powder-shaped desiccant has 0.28 nm (2. A water molecule having a molecular diameter of 8Å) is adsorbed and a refrigerant is not adsorbed, and an effective pore diameter is preferable, and a molecular sieve having an effective pore diameter of 3 to 4Å is preferable. Specifically, 3A-type zeolite having an effective pore diameter of 3Å or 4A-type zeolite having an effective pore diameter of 4Å is suitable.
吸湿性不織布からなる包材１１は、下記のように作成される。 The packaging material 11 made of a hygroscopic nonwoven fabric is created as follows.
まず、ゼオライトとして、合成ゼオライトであるモレキュラーシーブ３Ａパウダー（ユニオン昭和株式会社製）、酢酸ビニル樹脂およびメチルアルコールを混合して、混合液を作成する。モレキュラーシーブ、酢酸ビニル樹脂およびメチルアルコールの混合比は、用途や目的に応じて混合比を調整すればよい。 First, as zeolite, molecular sieve 3A powder (manufactured by Union Showa Co., Ltd.), which is a synthetic zeolite, vinyl acetate resin and methyl alcohol are mixed to prepare a mixed liquid. The mixing ratio of the molecular sieve, the vinyl acetate resin and the methyl alcohol may be adjusted according to the application or purpose.
ついで、この混合液に不織布を含浸させる。そして、乾燥機や減圧乾燥によって、不織布を乾燥させると、吸湿性不織布を得ることができる。 Then, the non-woven fabric is impregnated with this mixed solution. And a hygroscopic nonwoven fabric can be obtained by drying a nonwoven fabric with a dryer or reduced pressure drying.
混合液での添着量は、不織布の単位面積あたり、好ましくは１〜３０ｇ/ｍ２、より好ましくは１〜５０ｇ/ｍ２、さらに好ましくは１〜７０ｇ/ｍ２であり、吸湿性不織布は、不織布原紙（混合液を添着する前の不織布）の重量に対して、原紙の目付にもよるが、パウダー状乾燥剤を１〜７０質量％、好ましくは１〜５０質量％含有する。
パウダー状乾燥剤の含有量が少なすぎると所望の吸水性能が発現しない恐れがあるが、上記範囲とすることにより、所望の吸水性能を確実に発現させることができる。
一方、パウダー状乾燥剤の含有量が多すぎるとパウダー状乾燥剤が冷媒中に落下する可能性が高まる他、不織布の物性（強度等）が低下する恐れがあるが、上記範囲とすることにより、これらのリスクを確実に回避することができる。
Impregnated amount of mixture per unit area of the nonwoven fabric is preferably 1 to 30 g / m 2, more preferably 1 to 50 g / m 2, more preferably a 1~70g / m 2, hygroscopicity nonwoven fabric, Depending on the basis weight of the raw paper, the powdery desiccant is contained in an amount of 1 to 70% by mass, preferably 1 to 50% by mass, based on the weight of the nonwoven fabric base paper (nonwoven fabric before the mixed liquid is attached).
If the content of the powdery desiccant is too small, the desired water absorption performance may not be exhibited, but if the content is within the above range, the desired water absorption performance can be reliably exhibited.
On the other hand, if the content of the powdery desiccant is too large, the powdery desiccant may drop into the refrigerant, and the physical properties (strength, etc.) of the non-woven fabric may decrease. , You can avoid these risks without fail.
次に、具体的な例を用いて本実施の形態による効果を説明する。パウダー状乾燥剤にはモレキュラーシーブ３Ａパウダー（ユニオン昭和株式会社製）を用い、酢酸ビニル樹脂およびメチルアルコールを混合して、混合液（混合比 ２０ｇ：２０ｇ：６０cc）を作成する。この混合液に、不織布を含浸後、乾燥させて吸湿性不織布を作成する。この吸湿性不織布を袋形状に縫製して筒状の包材１１を作成する。 Next, the effect of this embodiment will be described using a specific example. Molecular sieve 3A powder (manufactured by Union Showa Co., Ltd.) is used as a powdery desiccant, and a vinyl acetate resin and methyl alcohol are mixed to prepare a mixed solution (mixing ratio 20 g: 20 g: 60 cc). A non-woven fabric is impregnated with this mixed liquid and then dried to form a hygroscopic non-woven fabric. This hygroscopic nonwoven fabric is sewn into a bag shape to form a tubular packaging material 11.
この包材１１に、合計で、３０ｇ／ｍ２のパウダー状モレキュラーシーブを添着させる。モレキュラーシーブの吸水量は、モレキュラーシーブの質量に対して、最大２０％であるので、モレキュラーシーブを不織布の重量に対して約６ｇ／ｍ２吸湿できることになり、従来技術（吸湿性を有さない通常の不織布）を用いた場合に比べて、添着させたモレキュラーシーブの吸水量分向上させることができる。 A total of 30 g / m 2 of powdery molecular sieve is attached to this packaging material 11. Since the water absorption of the molecular sieve is up to 20% with respect to the mass of the molecular sieve, the molecular sieve can absorb about 6 g / m 2 of the weight of the nonwoven fabric. As compared with the case of using a normal non-woven fabric, it is possible to improve the water absorption amount of the attached molecular sieve.
上記構成からなる本発明によれば、冷媒中に混入している水分を、従来の乾燥剤（成形体）のほか、パウダー状乾燥剤が分散された吸湿性樹脂もしくは、パウダー状乾燥剤を添着させた吸湿性不織布からなる包材によっても除去することができる。このため、本発明によれば、従来ヘッダタンク内で使用されていた乾燥剤を、種類も封入量も変えることなく、そのまま使用した場合であっても、サブクールコンデンサにおける水分除去能力を向上させることができる。
このような本発明は、ヘッダタンクの大型化や、乾燥剤の変更といった手段によらず、サブクールコンデンサにおける水分除去能力を向上させたい、という需要に応える技術として特に有用である。
According to the present invention having the above structure, the moisture mixed in the refrigerant is attached to the conventional desiccant (molded body), a hygroscopic resin in which a powdery desiccant is dispersed, or a powdery desiccant. It can also be removed by a packaging material made of the hygroscopic nonwoven fabric. Therefore, according to the present invention, it is possible to improve the water removal capability of the subcool condenser even when the desiccant that has been conventionally used in the header tank is used as it is without changing the type and the enclosed amount. You can
The present invention as described above is particularly useful as a technology that responds to the demand for improving the water removal capability of the subcool condenser regardless of the means such as increasing the size of the header tank and changing the desiccant.
１ 熱交換管
２ フィン
３ 冷媒凝縮パス
４ 冷媒過冷却パス
５ ヘッダータンク
６ ヘッダータンク
７ ヘッダータンク
８ 冷媒入口部
９ 冷媒出口部
１０ 仕切り板
１１ 包材
1 Heat Exchange Tube 2 Fin 3 Refrigerant Condensing Path 4 Refrigerant Supercooling Path 5 Header Tank 6 Header Tank 7 Header Tank 8 Refrigerant Inlet 9 Refrigerant Outlet 10 Partition Plate 11 Packaging Material
Claims (2)
並列配置された複数の熱交換管と、熱交換管の左右両端部が接続されるヘッダタンクと を備え、
前記熱交換管のうち、上方の複数の熱交換管により冷媒凝縮パスを構成し、下方の複数 の熱交換管により冷媒過冷却パスを構成し、
前記ヘッダタンクのうち、前記冷媒凝縮パスを経た冷媒を流入させて、前記過冷却パスへと流出させるヘッダタンク内に、乾燥剤を充填した包材を配置し、
この包材が、パウダー状乾燥剤を添着させた吸湿性不織布であって、
前記吸湿性不織布が、不織布原紙の質量に対して、パウダー状乾燥剤を１〜７０質量％含有する不織布であり、
乾燥剤の種類及び／又は封入量を変えることなく、水分除去能力を向上させることができることを特徴とする、コンデンサ。 A condenser that constitutes a refrigeration cycle,
A plurality of heat exchange tubes arranged in parallel, and a header tank to which both left and right ends of the heat exchange tubes are connected,
Of the heat exchange tubes, a plurality of upper heat exchange tubes constitute a refrigerant condensing path, and a plurality of lower heat exchange tubes constitute a refrigerant supercooling path,
Of the header tank, the refrigerant that has passed through the refrigerant condensing path is introduced, and in the header tank that flows out to the supercooling path, a packaging material filled with a desiccant is arranged,
This packaging material is a hygroscopic nonwoven fabric to which a powdery desiccant is attached ,
The hygroscopic nonwoven fabric is a nonwoven fabric containing 1 to 70% by mass of a powdery desiccant with respect to the mass of the nonwoven fabric base paper,
A capacitor, which is capable of improving a water removing ability without changing a kind and / or an encapsulation amount of a desiccant.
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| JP2015256554A JP6696175B2 (en) | 2015-12-28 | 2015-12-28 | Capacitor |
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| JP2015256554A JP6696175B2 (en) | 2015-12-28 | 2015-12-28 | Capacitor |
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| JP2019117038A (en) * | 2017-12-27 | 2019-07-18 | ユニオン昭和株式会社 | Subcooling condenser |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57108137A (en) * | 1980-12-25 | 1982-07-06 | Ichiro Noda | Production of sheet suitable for interior use particularly in closet and kitchen |
| JPH03115368U (en) * | 1990-03-07 | 1991-11-28 | ||
| US5245842A (en) * | 1992-05-01 | 1993-09-21 | Fayette Tubular Technology Corporation | Receiver dryer |
| JPH07109673A (en) * | 1993-10-13 | 1995-04-25 | P F C:Kk | Functional fiber material |
| JP2000274882A (en) * | 1999-03-24 | 2000-10-06 | Calsonic Kansei Corp | Condenser |
| JP2002228305A (en) * | 2001-01-30 | 2002-08-14 | Denso Corp | Drying agent container bag |
| US7275390B2 (en) * | 2002-04-17 | 2007-10-02 | Flow Dry Technology, Inc. | Desiccant cartridge for an integrated condenser/receiver and method of making same |
| US7989388B2 (en) * | 2005-01-21 | 2011-08-02 | Multisorb Technologies, Inc. | Resin bonded sorbent |
| US7595278B2 (en) * | 2005-01-21 | 2009-09-29 | Multisorb Technologies, Inc. | Resin bonded sorbent |
| DE102005025451A1 (en) * | 2005-06-02 | 2006-12-07 | Denso Automotive Deutschland Gmbh | Condenser for air conditioning |
| JP4591960B2 (en) * | 2005-07-04 | 2010-12-01 | 日軽熱交株式会社 | Heat exchanger with receiver tank |
| JP2010127556A (en) * | 2008-11-28 | 2010-06-10 | Showa Denko Kk | Heat exchanger |
| JP2012116488A (en) * | 2010-11-29 | 2012-06-21 | Union Showa Kk | Water-absorbing packaging material, method of manufacturing the same, and reproducing method |
| JP2012154604A (en) * | 2011-01-28 | 2012-08-16 | Showa Denko Kk | Condenser |
| US8828104B2 (en) * | 2011-12-16 | 2014-09-09 | B3C Fuel Solutions LLC | Tank fuel drying device |
| JP5673612B2 (en) * | 2012-06-27 | 2015-02-18 | 三菱電機株式会社 | Refrigeration cycle equipment |
| JP6313549B2 (en) * | 2013-02-26 | 2018-04-18 | 日本バルカー工業株式会社 | Adsorption sheet, production method for obtaining the adsorption sheet, adsorption function recovery method, and adsorption method |
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