Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Nippondenso Co., Ltd.

Imasen Electric Industrial Co., Ltd.

Tiger Corporation

Tokai Riki Mfg. Co., Ltd

Yoshio Miyata

Seiji Inoue

Etsuo Hasegawa

Jun Abei

Naoki Yokoyama

Atsushi Yamada

Toshio Morikawa

Yoshikazu Shinpo

Hiroshi Ishikawa

Shigetaka Yoshikawa

Aun Ota

Kouta Hagihara

Isao Goto

Masaaki Iinuma

Shigeo Ito

Hideo Kobayashi

Katuhiko Arisawa

Takashi Toyoshima

Toshihiko Kawamura

Mamoru Suzuki

Koichi Toyama

Junjiro Yoshimura

Katsunori Uchimura

Hiroshi Ueda

Koichi Ito

Masahiro Shimoya

Masamichi Makihara

Koichi Ban

Yoshiyuki Yamauchi

Takahiro Tokunaga

Toshio Ohara

Youichi Murakami

Kiyoshi Usami

Ryoichi Sanada

Nobuyuki Hashimura

Shigeji Ohishi

Kiyoshi Kittaka

Yoshitaka Natsume

Kiyomitsu Tsuchiya

Akihisa Kurokawa

Hitoshi Ueda

Takashi Andoh

Yoshio Satou

Katsutoshi Enomoto

Yasuhiro Sudo

Tetsuo Momo

An electronic horn for use, e.g., in a vehicle, includes a piezoelectric element () that excites a plate-shaped oscillator (). A resonator () is provided with an opening () and covers forward of the oscillator such that a resonance space (S) is defined between the resonator and the oscillator. An inner cylinder () and an outer conical housing () are provided concentrically around the resonator. A circular cover () covers the inner cylinder () and the outer conical housing () from the front, such that a buffer chamber (BR), at least one first sound amplifying chamber (MH), and a second sound amplifying chamber (MH) are defined around an entire circumference of the opening of the resonator.

Electronic horn

An electronic horn includes a cover () on a front side of an intermediate element (). A first passage (P) within the horn is defined by a central portion () of the cover () that projects into a cylindrical interior of a cylindrical water-proofing wall (). Second passages (PPP) extend generally concentrically with respect to the first passage (P) and are respectively defined by water-proofing walls () that are formed on the cover () and project into the interior spaces of water-proofing walls (). The outermost second passage (P) opens toward the forward direction. The first and second passages (P-P) extend in a back-and-forth path that prevents any rainwater, which has entered the interior of the horn through the opening of the outermost second passage (P), from reaching a resonance space () defined between the resonator () and a sound-generating oscillator ().

A cold storage heat exchanger includes refrigerant tubes having therein refrigerant passages and arranged to provide a clearance therebetween. A cold storage container is bonded to a refrigerant tube and defines therein a compartment receiving a cold storage material. The cold storage container has protrusion portions protruding outward and being in contact with the refrigerant tube.

Cold-storage heat exchanger

A cold storage heat exchanger includes multiple refrigerant tubes arranged to provide a clearance therebetween, multiple cold storage containers each of which is interposed between adjacent refrigerant tubes, bonded to the adjacent refrigerant tubes and defining a compartment receiving a cold storage material. A surface of each cold storage container has multiple protrusion portions, and each protrusion portion protrudes outward and is in contact with the adjacent refrigerant tubes. The multiple protrusion portions are arranged in a zigzag manner or extend continuously in an air flow direction.

An object of the invention is to provide an effective cooling-energy storing performance and a stable cooling-energy radiating performance and to realize a high productivity. An evaporator has a plurality of refrigerant tubes arranged at almost equal intervals to form therebetween accommodating spaces. A plurality of cooling-storage containers are arranged in some of the accommodating spaces and fins are arranged in the remaining accommodating spaces. A cooling-storage unit is formed by one cooling-storage container and two refrigerant tubes arranged at both sides of the cooling-storage container. Each of the cooling-storage container has projections extending from one wall portion to the other wall portion to form heat exchange portions. The cooling-storage container is connected to the refrigerant tubes by soldering material.

Cool-storage type heat exchanger

A cold storage heat exchanger includes multiple refrigerant tubes, a cold storage container, an inner fin, a cooling air passage and an air-side fin. The inner fin is arranged inside of the cold storage container. The cooling air passage, in which air flows to cool a space, is provided to contact a surface of the refrigerant tube on a side opposite to the cold storage container. The air-side fin is arranged in the cooling air passage and thermally connected to the refrigerant tube. The cold storage container includes multiple recess portions bonded to the inner fin, and multiple protrusion portions located on an outer side of the recess portions. The protrusion portions of the cold storage container are bonded to an outer surface of the refrigerant tube.

An outer surface of a cold-storage container (or a refrigerant tube) is provided with a plurality of protrusion portions or recess portions. A cooling air passage, in which air flows to cool a space to be cooled in a cold storage time and in a cold release time of the cold storage material, is provided to contact a surface of the refrigerant tube on a side opposite to the cold storage container bonded to the refrigerant tube. The refrigerant tubes and the cold storage container form therebetween a cold-storage side air passage by the protrusion portions or the recess portions, such that air flows in the cold-storage side air passage separated from the cooling air passage. For example, the cold-storage side air passage is provided with a slanting space that causes condensed water or ice generated in the cold storage time to be drained along the cold-storage side air passage.

A cold storage heat exchanger includes multiple refrigerant tubes, a cold storage container that is bonded to the refrigerant tube and defines a compartment receiving a cold storage material, and an inner fin arranged inside of the cold storage container. The cold storage container has a portion that stops and fixes the inner fin, and the cold storage container has a space where air is sealed. The space of the cold storage container is located at an upper side of the member that stops and fixes the inner fin. Accordingly, a stress applied to the cold storage container in the expansion of the cold storage material can be reduced.

A cold storage heat exchanger includes multiple refrigerant tubes having therein refrigerant passages. The refrigerant tubes are arranged to provide a clearance therebetween. The cold storage heat exchanger further includes a cold storage container that is brazed with the refrigerant tube and defines a compartment receiving a cold storage material. The cold storage container has an open-hole portion at a brazed part with the refrigerant tube. Accordingly, efficiency of heat exchange by the cold storage heat exchanger can be improved.

An air conditioning apparatus has a case, a heat exchanger rotatable about a rotation axis in the case, and a pipe unit in communication with the heat exchanger. The pipe unit has a first section fixed to the case and a second section coaxially coupled to the first section. The second section is coupled to the heat exchanger and rotatable with the heat exchanger. The first section has a first annular portion, a second annular portion, a cylindrical portion, and a support member. The second section has a flange portion disposed between the first annular portion and the support member. An O-ring is disposed in a groove provided by the first annular portion and the cylindrical portion, and is in contact with a surface of the first annular portion and the flange portion in a direction parallel to the rotation axis.

Sealing structure of a rotation unit and air conditioning apparatus having the same

A mounting structure for a heat accumulation tank is provided with an elastic member that wraps around a tank main body, and a heat accumulation tank mounting member which wraps around the outer peripheral surface of the elastic member and holds the tank main body by being tightened in the circumferential direction, and which attaches to a receiving member. The elastic member is a molded part. The length of the elastic member is shorter than length of the circumference of the outer peripheral surface of the tank main body. The heat accumulation tank mounting member includes a shift inhibiting portion which inhibits an upward shift of the tank main body. The outside diameter of the tank main body becomes increasingly wider in the upward direction.

Mounting structure and method for heat accumulation tank

A double-layer vacuum container includes: an inner container having a bridging member supported by an outer container in a bridging manner; the outer container through which the bridging member extending from the inner container is externally exposed; and a cover member for externally covering the portion of the outer container through which the bridging member is exposed and for sealing a space inside the cover member and a space between the inner container and the outer container in a vacuum state between the cover member and the outer container. With such a structure of the double-layer vacuum container, the inner container other than a lip is supported by the outer container with a good heat retaining property to prevent the displacement or damage of the inner container.

Double-layer vacuum container

In the inventive heat storage tank, the welded portionbetween the inner tankand the outer tankis not encircled by the housingbut opens outward in the radial direction of the tank body port, and a gapis provided in the axial direction of the tank body portbetween the welded portionand a par of the housingopposed to the welded portionin the axial direction of the tank body port. Also, there is an elastic memberbetween the peripheryof the pipe-inserting holein the flow-straightening memberand the flange

Heat storage tank

A cooling system comprising a cooling water circuit in which cooling water of an engine circulates in a radiator , a hot water circuit in which hot water circulates in a heater core , an air mixing door for adjusting the volume of air which passes through the heater core, a heat storage element provided in a bypass passage for branching hot water into the heat core from the hot water circuit, a flow path selector valve for adjusting the distribution of hot water to the heat storage element and the heater core, and a control unit for controlling the operation of the air mixing door and the flow path selector valve, wherein the control unit controls the flow path selector valve such that the flow rate of hot water to be distributed to the heater core becomes larger than the flow rate of hot water to be distributed to the heat storage element, in the event that the volume of air passing through the heater core is equal to or larger than a predetermined value.

Automotive internal combustion engine cooling system

Growing community of inventors

Nagoya, Japan

Yoshio Miyata