公开(公告)号：US11009273B2

公开(公告)日：2021-05-18

申请号：US16322960

申请日：2017-07-21

Applicant: FUJIKOKI CORPORATION ,  DENSO CORPORATION

Inventor： Naoki Kamata ,  Kinya Okutsu ,  Takashi Mogi ,  Kurato Yamasaki ,  Shigeki Ito

IPC: F25B41/06 ,  F25B41/31 ,  F16K31/00

Abstract: An expansion valve is provided with a valve body including an inlet hole through which a refrigerant flows into a valve chamber, and a valve hole through which the refrigerant flows out of the valve chamber; a valve element configured to adjust an amount of the refrigerant flowing through the valve hole; a power element that is mounted to the valve body and configured to drive the valve element via a valve rod; a first vibration isolation spring provided in the valve chamber and configured to prevent vibration of the valve element; and a second vibration isolation spring that is in contact with the valve rod and configured to prevent vibration of the valve element.

公开(公告)号：US11092366B2

公开(公告)日：2021-08-17

申请号：US16622405

申请日：2018-05-22

Applicant: Fujikoki Corporation

Inventor： Takashi Mogi ,  Kouhei Kubota ,  Ryo Matsuda ,  Shin Honda ,  Kurato Yamasaki ,  Shigeki Ito

IPC: F25B41/31 ,  F16K1/42 ,  F16K1/46

Abstract: It is an object of the present invention to provide an expansion valve with an improved ring spring.
Accordingly, in the present invention, the expansion valve includes a valve body including a valve chamber, a valve element disposed in the valve chamber, a biasing member configured to bias the valve element toward a valve seat, an actuation rod that presses the valve element in a valve opening direction against a biasing force of the biasing member, and a ring spring disposed between an outer circumferential surface of the actuation rod and an inner circumferential surface of the valve body. The ring spring includes a ring portion, at least three elastic protrusion portions that protrude inward from the ring portion and contact the outer circumferential surface of the actuation rod, and at least one outward protrusion portion that protrudes outward from the ring portion and contacting the inner circumferential surface of the valve body.

公开(公告)号：USD919754S1

公开(公告)日：2021-05-18

申请号：US29701611

申请日：2019-08-13

Applicant: FUJIKOKI CORPORATION

Designer： Takashi Mogi ,  Ryo Matsuda

公开(公告)号：US11168930B2

公开(公告)日：2021-11-09

申请号：US16633499

申请日：2018-06-01

Applicant: Fujikoki Corporation

Inventor： Takashi Mogi ,  Kouhei Kubota ,  Ryo Matsuda ,  Shin Honda ,  Kurato Yamasaki ,  Shigeki Ito

IPC: F25B41/31

Abstract: An expansion valve with an improved vibration isolation mechanism includes a valve body, a valve element, a biasing member that biases the valve body toward a valve seat, an actuation rod that contacts the valve element and presses the valve element in a valve opening direction against a biasing force of the biasing member, and a vibration isolating spring that suppresses vibration of the valve element. The actuation rod is inserted into an actuation rod insertion hole in the valve body. The vibration isolating spring includes a leg spring having a base portion and a plurality of leg portions extending from the base portion. The leg spring is arranged in the valve chamber such that a center axis of the leg spring is non-coincident with a center axis of the actuation rod insertion hole.

公开(公告)号：USD919755S1

公开(公告)日：2021-05-18

申请号：US29701614

申请日：2019-08-13

Applicant: FUJIKOKI CORPORATION

Designer： Takashi Mogi ,  Ryo Matsuda