US 11,813,920 B2
Piping system for air conditioner installed in vehicle
Gang Hou, Hiratsuka (JP); Hiroaki Shibano, Hiratsuka (JP); Jiro Watanabe, Hiratsuka (JP); Susumu Hatanaka, Hiratsuka (JP); Naoshi Yamaguchi, Hiratsuka (JP); Mie Okura, Hiratsuka (JP); Ikuma Yusa, Hiratsuka (JP); Shusaku Tomoi, Hiratsuka (JP); Tomohide Saita, Hiratsuka (JP); Hiroyuki Wakamatsu, Hiratsuka (JP); Ryuhei Suzuki, Hiratsuka (JP); Yuki Mizutani, Hiratsuka (JP); Nobuaki Kuribayashi, Hiratsuka (JP); Hiroshi Shintani, Tokyo (JP); and Kazuto Yamakawa, Hiratsuka (JP)
Assigned to The Yokohama Rubber Co., Ltd., Tokyo (JP)
Appl. No. 17/619,731
Filed by THE YOKOHAMA RUBBER CO., LTD., Tokyo (JP)
PCT Filed Mar. 24, 2020, PCT No. PCT/JP2020/012882
§ 371(c)(1), (2) Date Dec. 16, 2021,
PCT Pub. No. WO2021/019836, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 2019-139689 (JP), filed on Jul. 30, 2019.
Prior Publication US 2022/0355643 A1, Nov. 10, 2022
Int. Cl. B60H 1/00 (2006.01); F16L 11/08 (2006.01)
CPC B60H 1/00571 (2013.01) [F16L 11/08 (2013.01); F16L 11/082 (2013.01); F16L 11/086 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A piping system for an air conditioner installed in a vehicle, the piping system comprising:
a plurality of pipes constituting a circulation path connecting three or more component devices, being disposed separate from each other, of the air conditioner installed in the vehicle to circulate a refrigerant, each of the pipes extending between the component devices that are connected,
resin pipe bodies embedded with a non-metal reinforcing material being employed in 50% or more of a total length of each of the pipes,
wherein the resin pipe bodies comprise a resin inner surface layer and a resin outer surface layer and both a pliable resin hose and a non-pliable resin pipe are used as the resin pipe bodies, and
in the pliable resin hose, the reinforcing material is interposed between the inner surface layer and the outer surface layer, and in the non-pliable resin pipe, the reinforcing material is embedded in the outer surface layer without being embedded in the inner surface layer.