Back to results
US 2015/0027683 A1Published application
Heat exchange device
AssigneeYutaka Giken Co., Ltd.
InventorsToru HISANAGA, Tomoyuki UCHIDA, Teruaki HYODO
Life of this patent
Estimating the term…
Abstract
A heat exchange device includes a thermoactuator usable over a long period of time is disclosed. The thermoactuator includes a case. In the case, there is formed a stopper providing an advancement limit of a rod to limit an opening degree of a valve of the thermoactuator.
Claims17
A heat exchange device comprising:
- a branching portion for introducing an exhaust gas thereinto and dividing the introduced exhaust gas to flow to two fluid passageways;
- a first fluid passageway extending from the branching portion;
- a second fluid passageway extending from the branching portion along the first fluid passageway;
- a heat exchanger attached to the second fluid passageway for recovery of energy from heat of the exhaust gas;
- a thermoactuator comprising a tubular case, a temperature sensitive portion attached to one end of the case for sensing a temperature of a medium, a piston received in a sleeve in the temperature sensitive portion for advancing by the temperature sensed by the temperature sensitive portion, a rod disposed on a distal end of the piston for advancing by the advancement of the piston, and a return spring accommodated in the case and urging the rod in a direction to retreat the rod;
- a valve actuated by the thermoactuator for opening and closing the first fluid passageway or the second fluid passageway;
- and
- a stopper formed in the case and providing an advancement limit of the rod to limit an opening degree of the valve.
5 more elements
A heat exchange device comprising:
- a branching portion for introducing an exhaust gas thereinto and dividing the introduced exhaust gas to flow to two fluid passageways;
- a first fluid passageway extending from the branching portion;
- a second fluid passageway extending from the branching portion along the first fluid passageway;
- a heat exchanger attached to the second fluid passageway for recovery of energy from heat of the exhaust gas;
- a thermoactuator comprising a tubular case, a temperature sensitive portion attached to one end of the case for sensing a temperature of a medium, a piston received in a sleeve in the temperature sensitive portion for advancing by the temperature sensed by the temperature sensitive portion, a rod disposed on a distal end of the piston for advancing by the advancement of the piston, and a return spring accommodated in the case and urging the rod in a direction to retreat the rod;
- a valve actuated by the thermoactuator for opening and closing the first fluid passageway or the second fluid passageway;
- and
- a stopper disposed on a center axis of the rod of the thermoactuator,
- the rod having an advancement limit provided by abutting on the stopper to limit an opening degree of the valve.
6 more elements
A heat exchange device comprising:
- a branching portion for introducing an exhaust gas thereinto and dividing the introduced exhaust gas to flow to two fluid passageways:
- a first fluid passageway extending from the branching portion;
- a second fluid passageway extending from the branching portion along the first fluid passageway;
- a heat exchanger attached to the second fluid passageway for recovery of energy from heat of the exhaust gas;
- a thermoactuator comprising a tubular case, a temperature sensitive portion attached to one end of the case for sensing a temperature of a medium, a piston received in a sleeve in the temperature sensitive portion for advancing by the temperature sensed by the temperature sensitive portion, a rod disposed on a distal end of the piston for advancing by the advancement of the piston, and a return spring accommodated in the case and urging the rod in a direction to retreat the rod;
- a valve actuated by the thermoactuator for opening and closing the first fluid passageway or the second fluid passageway, the valve being swingable on a valve shaft of the valve;
- an abutment piece disposed at an end portion of the valve shaft and offset relative to a shaft center of the valve shaft;
- and
- a stopper disposed on an orbit of the abutment piece,
- the rod having an advancement limit provided by abutment of the abutment piece on the stopper to limit an opening degree of the valve.
7 more elements
A heat exchange device comprising:
- a branching portion for introducing an exhaust gas thereinto and dividing the introduced exhaust gas to flow to two fluid passageways;
- a first fluid passageway extending from the branching portion;
- a second fluid passageway extending from the branching portion along the first fluid passageway;
- a heat exchanger attached to the second fluid passageway for recovery of energy from heat of the exhaust gas;
- a valve chamber connected to downstream ends of the first and second fluid passageways, the first and second fluid passageways meeting together at the valve chamber;
- a thermoactuator comprising a tubular case, a temperature sensitive portion attached to one end of the case for sensing a temperature of a medium, a piston received in a sleeve in the temperature sensitive portion for advancing by the temperature sensed by the temperature sensitive portion, a rod disposed on a distal end of the piston for advancing by the advancement of the piston, and a return spring accommodated in the case and urging the rod in a direction to retreat the rod;
- a valve accommodated in the valve chamber and actuated by the thermoactuator for opening and closing the first fluid passageway or the second fluid passageway, the valve being swingable on a valve shaft of the valve;
- and
- a stopper attached to the valve,
- the stopper being configured to abut on an inner wall of the valve chamber by a predetermined amount of swinging of the valve, and
- the rod having an advancement limit provided by the abutment of the stopper on the inner wall of the valve chamber to limit an opening degree of the valve.
8 more elements
A heat exchange device comprising:
- a branching portion for introducing an exhaust gas thereinto and dividing the introduced exhaust gas to flow to two fluid passageways;
- a first fluid passageway extending from the branching portion;
- a second fluid passageway extending from the branching portion along the first fluid passageway;
- a heat exchanger attached to the second fluid passageway for recovery of energy from heat of the exhaust gas;
- a valve chamber connected to downstream ends of the first and second fluid passageways, the first and second fluid passageways meeting together at the valve chamber;
- a thermoactuator comprising a tubular case, a temperature sensitive portion attached to one end of the case for sensing a temperature of a medium, a piston received in a sleeve in the temperature sensitive portion for advancing by the temperature sensed by the temperature sensitive portion, a rod disposed on a distal end of the piston for advancing by the advancement of the piston, and a return spring accommodated in the case and urging the rod in a direction to retreat the rod;
- a valve accommodated in the valve chamber and actuated by the thermoactuator for opening and closing the first fluid passageway or the second fluid passageway, the valve being swingable on a valve shaft of the valve;
- and
- a stopper disposed in the valve chamber and on an orbit of the valve,
- the rod having an advancement limit provided by abutment of the valve on the stopper to limit an opening degree of the valve.
7 more elements
Dependencies are inferred from the claim text.