Fujikoki Corporation

Denso Corporation

Yokogawa Electric Corporation

Hotalux, Ltd.

Takashi Mogi

Kazuto Kobayashi

Ryo Matsuda

Shigeki Ito

Kurato Yamasaki

Eiji Fukuda

Shin Honda

Kinya Okutsu

Kouhei Kubota

Daisuke Hayashi

Akira Miura

Toshiyuki Kondo

Shinji Iio

Morio Wada

Takahiro Kudo

Tsuyoshi Yakihara

Masayuki Suehiro

Katsuya Ikezawa

Toshimasa Umezawa

Machio Dobashi

Mafumi Morita

Shoujirou Araki

Naoki Kamata

An LED illumination apparatus includes a plurality of the LEDs mounted on an LED substrate, a plurality of housings disposed on the LED substrate and each having a projection to be fitted with a corresponding one of a plurality of positioning holes formed in the substrate, a plurality of lenses fixed to the housings, and a cover disposed over the lenses and the housings. Each one of the housings includes connection parts configured to be positioned through fitting between the positioning holes and the projections of an adjacent housing to connect them between the positioning holes and the projections of an adjacent housing connect them together; interconnected housings held in position by the cover.

LED illumination apparatus with plurality of lens housings

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.

Expansion valve

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.

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.

Expansion valve including a vibration isolation spring having a plurality of legs

Provided is a diaphragm-actuated fluid control valve capable of, even in a region where the pressure difference between the pressures on the upper surface side and the lower surface side of a diaphragm is small, significantly changing the amount of lift of the diaphragm relative to the change in the pressure difference, without reducing the thickness of the diaphragm, and thus is capable of providing a predetermined flow rate and performing stable flow rate control. The control valve has a diaphragmfor driving a valve. The diaphragmhas a mountainous-wave portionformed between an outermost portionand an innermost portionthereof, the mountainous-wave portion having the shape of concentric circles when viewed in a plan view and having N+(0.25 to 0.75) elevated portions that protrude upward or downward when viewed in cross section, where N is a positive integer (1, 2, 3, . . . ).

Diaphragm-actuated fluid control valve

An expansion valve for reducing the quantity of material required for the valve body by contriving the arrangement of bolt fitting grooves. In the expansion valve (), displacement of a valve member driver () provided in the valve body () is transmitted to a valve member by a valve member drive rod () and the valve opening is altered to control the flow rate of the refrigerant. The valve body () consists of a body upper portion () and a body lower portion () narrower than the body upper portion (), and bolt fitting grooves () opening in the flank of the valve body (), preferably opening obliquely downward, are formed at the boundary () of the body upper portion () and the body lower portion (). With such a layout, the material required at the boundary () can be reduced furthermore and the quantity of material required for the valve body () can be reduced furthermore, as a result. Since the opening width (minimum spatial dimension) w is smaller than the diameter of bolt, a seating surface is assured sufficiently around the bolt fitting groove () and the bolt does not drop off from the bolt fitting groove ().

To reduce a weight of a valve main body of an expansion valve formed by an extrusion molding of a metal material such as an aluminum alloy or the like. A valve main bodyis made of a material obtained by an extrusion molding of a metal material such as an aluminum alloy or the like. Two pair of holding facesand, andandare formed on both side faceandin the extruding direction of the valve main body, and the other portions are to be concave as much as possible, so that the weight can be reduced. The holding facesandand the holding facesandare parallel faces, and come to be holding faces for chuck claws Cand Cat a time of machining.

In an expansion valve, in a first passage through which a high pressure liquid refrigerant flows, an inlet port includes a large diameter passage portion formed from one side surface to the other side surface of a valve body, and a small diameter passage portion that provides communication between the large diameter passage portion on the bottom end thereof and a valve chamber. A coil spring provided in the valve chamber biases a valve member toward a valve hole. An O ring that seals between a plug that supports a lower end of the coil spring and the valve body is located below the small diameter passage portion and placed on the opposite side of the bottom end of the large diameter passage. Thus, the plug that closes an opening of the valve chamber can be mounted to an upper position, thereby reducing a vertical size of the valve body to further reduce a size of the valve body, and reducing an amount of use of metal materials for the valve body to reduce weight and cost.

Expansion valve with noise reduction means

Growing community of inventors

Tokyo, Japan

Takashi Mogi