Abstract: A semiconductor device includes: an n-type semiconductor layer; a p-type drift region formed in a surface layer of the n-type semiconductor layer; an n-type body region formed in the surface layer of the n-type semiconductor layer so as to be spaced apart from or adjacent to the p-type drift region; a p-type drain region formed in a surface layer of the p-type drift region; a p-type source region formed in a surface layer of the n-type body region; a gate insulating film formed over a surface of the n-type semiconductor layer so as to straddle the p-type drift region and the n-type body region; a gate electrode formed over the gate insulating film; and an n-type region formed in the surface layer of the p-type drift region and arranged between a side edge of the p-type drift region near the n-type body region and the p-type drain region.

Abstract: A damper is provided to suppress the abnormal noise or air noise at the small opening of the damper. The damper includes a wall surface which forms an air flow passage, a stationary portion which extends from the wall surface to the center of a flow passage, and a rotating portion rotatably disposed in the flow passage, having one end in contact with a portion of the stationary portion at a downstream side of an air flow through the flow passage. A curved wall portion as a convex curved surface protruding to the center of the flow passage is formed on a position of the wall surface on which the air flow passing between the one end and the stationary portion impinges.

Abstract: An air conditioning unit capable of suppressing a low frequency noise and a vehicle air conditioning apparatus are provided. The air conditioning unit includes a fan (9) for supplying air, a heat exchanger (7) for performing heat exchange between the air supplied from the fan (9), a first flow passage (13) for guiding the air supplied from the fan (9) in a direction along a surface of the heat exchanger (7), and a second flow passage (15) for turning the flow direction of the air passed through the first flow passage (13) in a direction intersecting the surface of the heat exchanger (7), wherein a projecting portion (25, 27) is disposed to the confronting surface (19) of the second flow passage (15) confronting the heat exchanger (7) so as to project toward the heat exchanger (7) as well as to extend in a direction along the air flow in the first flow passage (13).

Abstract: Provided are a damper in which strange sound (whistling sound) generated when the damper has a small opening degree is suppressed, an air conditioning unit, and an air conditioner for vehicle. The damper has a wall surface (33) for forming a channel for allowing air to flow in it, a stationary portion (35) extending from the wall surface (33) toward the center of the channel (23), and a rotation portion (25) rotatably placed in the channel (23) and having one end (29) in contact with a portion of the stationary portion (35), which portion is on the downstream side of air flow in the channel (23). A curved wall portion (45) curved and projected toward the center of the channel (23) is formed at that position on the wall surface (33) with which the air flow passed between one end (29) and the stationary portion (35) collides.

Abstract: An air-conditioning unit and an air-conditioning apparatus capable of setting the air temperature at a defroster vents higher than the air temperature at the foot vents during heating operation are provided. Each of the air-conditioning unit and air-conditioning apparatus includes a chassis; a cooling unit configured to cool air introduced into the chassis; a heating unit configured to heat air introduced into the chassis; a conditioned-air channel configured to guide the heated air and the cooled air into a high-temperature hot-air vent and a low-temperature hot-air vent; and a mixing-suppression unit configured to suppress mixing of the heated air and the cooled air, the mixing-suppression unit being provided in the conditioned-air channel.

Abstract: An air-conditioning apparatus 1 for a vehicle has an air supply duct 6 for supplying air and a vent 40 communicating with the air supply duct 6 for blowing the air into a compartment of the vehicle. The direction of the air blown from the vent 40 is adjustable. The air supply duct 6 includes a branch chamber 14, 16 for reducing flow speed of the air flowing through the air supply duct 6 so that the speed-reduced air in the branch chamber 14, 16 is blown from the vent 40.

Abstract: A vehicle air-conditioning system has an evaporator for receiving air discharged into a casing of the system and changing the air to a cold air flow that can flow rearward, and a heater for selectively receiving at least a portion of the cold air flow and heating such portion to a warm air flow. The system includes partition means for directing the warm air flow to permit mixing of the warm air flow and the remaining cold air flow that bypasses the heater. The partition means includes a top end portion and guide means for downwardly directing the cold, warm, or the mixed cold and warm air which has flowed beyond the top end portion for blowing-out such air out of the system. The top end portion defines a surface having a streamlined or curved configuration along which the cold, warm, or mixed cold and warm air can flow.

Abstract: A vehicle air-conditioning duct 1 has an oblong cross-sectional configuration. The air-conditioning duct 1 has a top wall 16, a bottom wall 18 and side walls 12, 14 enclosing an interior space and at least one constriction 22, 24 formed by a projection protruding from at least one of the top wall 16 and the bottom wall 18 into the air-conditioning duct 1 so as to connect the top wall 16 with the bottom wall 18. The constriction 22, 24 continuously extends in an air flow direction so that cross-sectional areas of the constriction 22, 24 are constant in the air flow direction.

Abstract: An air-conditioning apparatus 1 for a vehicle according to the present invention comprises an air supply duct 6 for supplying air and a vent 40 communicating with the air supply duct 6 for blowing the air into a compartment of the vehicle. The direction of the air blown from the vent 40 is adjustable. The air supply duct 6 includes a branch chamber 14, 16 for reducing flow speed of the air flowing through the air supply duct 6 so that the speed-reduced air in the branch chamber 14, 16 is blown from the vent 40.

Abstract: An vehicle air-conditioning system (1) according to the present invention has an evaporator (4) for receiving an air being discharged into a casing (2) of the system by a blower and changing it to a cold air flow, the cold air flow being allowed to flow rearward, and a heater (6) located downstream of the evaporator (4) for selectively receiving at least a portion of the cold air flow and heating it to a warm air flow. The air conditioning system (1) also has partition means (8) disposed downstream of the heater (6) for directing the warm air flow upwardly in such a manner as to permit mixing of the warm air flow through the heater (6) and the remaining cold air flow bypassing the heater (6) thereabove, the partition means (8) including a top end portion (10), and guide means (11) for downwardly directing the cold air, the warm air or the mixture of cold and warm airs which has flowed beyond the top end portion (11) of said partition means (8) for blowing-out.

Abstract: A vehicle air-conditioning duct 1 according to the present invention has an oblong cross-sectional configuration. The air-conditioning duct 1 comprises a top wall 16, a bottom wall 18 and side walls 12, 14 enclosing an interior space and at least one constriction 22, 24 formed by a projection protruding from at least one of the top wall 16 and the bottom wall 18 into the air-conditioning duct 1 so as to connect the top wall 16 with the bottom wall 18. The constriction 22, 24 continuously extends in an air flow direction so that cross-sectional areas of the constriction 22, 24 are constant in the air flow direction.

Abstract: An air conditioner for a vehicle comprises an air conditioner housing and an air intake formed in the air conditioner housing. An evaporator is disposed downstream of the air intake and an heater core is disposed downstream of the evaporator. Vent and foot outlets are formed in the housing downstream of the evaporator. The air conditioner further includes a first passage defined between the evaporator and the heater core and a guide plate disposed downstream of the heater core for directing hot air heated by passing through the heater core toward cool air not passing through the heater core.

Abstract: An air conditioning system for a vehicle is disclosed. The air conditioning system includes a casing, an evaporator, a heater core at a rear side of the evaporator, and a mixing area for mixing a first air bypassing the heater core with a second air flowing through the heater core. The system further includes a partition plate for guiding the second air to the mixing area after the second air flows through the heater core, a foot passage, a defrosting passage, a vent outlet, and a defrosting outlet. The system still further includes a temperature controlling damper for controlling rates of the first air and the second air after the first and second airs flows through the evaporator so as to attain a predetermined final temperature of the air which is discharged into a passenger compartment of the vehicle. The system further includes a vent damper, a foot damper and a defrosting damper.

Abstract: A connecting structure for high frequency circuits is provided, with which components can be readily replaced, and which does not require high assembly accuracy and is applicable in a broad band. First and second circuit boards each having strip lines on top surfaces thereof are placed to secure a gap therebetween. Patch portions each constituting a resonator are formed by extending the width of the strip lines, and a supporting member of a foam material is placed on the top of the patch portion formed on the first circuit board. A parasitic element made of a dielectric material is cantilevered by the supporting member. The free end side of the parasitic element is placed above the patch portion formed on the second circuit board while securing a predetermined space between the parasitic element and this patch portion. A strong electrical connection is established by the parasitic element that electromagnetically couples non-continuing portions, thereby making it possible to cut a direct current.

Abstract: An air conditioning system for a vehicle is disclosed. The air conditioning system includes a casing, an evaporator, a heater core at a rear side of the evaporator, and a mixing area for mixing a first air bypassing the heater core with a second air flowing through the heater core. The system further includes a partition plate for guiding the second air to the mixing area after the second air flows through the heater core, a foot passage, a defrosting passage, a vent outlet, and a defrosting outlet. The system still further includes a temperature controlling damper for controlling rates of the first air and the second air after the first and second airs flows through the evaporator so as to attain a predetermined final temperature of the air which is discharged into a passenger compartment of the vehicle. The system further includes a vent damper, a foot damper and a defrosting damper.

Abstract: An air conditioner for a vehicle comprises an air conditioner housing and an air intake formed in the air conditioner housing. An evaporator is disposed downstream of the air intake and an heater core is disposed downstream of the evaporator. Vent and foot outlets are formed in the housing downstream of the evaporator. The air conditioner further includes a first passage defined between the evaporator and the heater core and a guide plate disposed downstream of the heater core for directing hot air heated by passing through the heater core toward cool air not passing through the heater core.

Abstract: Within an upper plenum of a nuclear reactor, a portion of a heated coolant flows radially outward from a central portion of a core barrel (30) towards outlet nozzles (12) in a region of an upper core plate (21) extending outside of an outer periphery of the core along an inner wall of a core barrel (30). Portions of the coolant flows beneath the outlet nozzles (12). Thus, streams of heated coolant flowing in opposite directions may collide with each other. After collision, the flow directions of the heated coolant are changed to flow upward. Due to the collision, the coolant flow behavior becomes complicated and unstable, making it difficult to measure the temperature of the heated coolant with an outlet pipe (42) connected to the outlet nozzle (12).

Abstract: A connecting structure for high frequency circuits is provided, with which components can be readily replaced, and which does not require high assembly accuracy and is applicable in a broad band. First and second circuit boards each having strip lines on the top surfaces are placed to secure a gap. Patch portions each constituting a resonator are formed by extending the width of the strip lines, and a supporting member of a foam material is placed on the top of the patch portion formed on the first circuit board such that a parasitic element made of a dielectric material is cantilevered by the supporting member. The free end side of the parasitic element is placed above the patch portion formed on the second circuit board while securing a predetermined space. A strong electrical connection is established by the parasitic element that electromagnetically couples non-continuing portions, thereby making it possible to cut a direct current.

Abstract: An apparatus for promoting intermixing of heated fluid streams within a nuclear reactor vessel is implemented in such structural configuration and disposition as to be capable of not only promoting uniform temperature distribution of a heated fluid stream flowing into an outlet nozzle but also reducing flow resistance which the heated fluid encounters within a upper plenum of the reactor vessel. The apparatus is disposed within a upper plenum (40) defined within a nuclear reactor vessel (10) of a nuclear reactor above a core having a low temperature region (a) and a high temperature region (d) where a heated fluid flows at a low temperature and a high temperature, respectively. The upper plenum (40) is hydraulically communicated to outlet nozzles (12) installed at a side wall of the nuclear reactor vessel (10).