Abstract: The present invention provides a supported metal catalyst that has an electric conductivity acceptable as a catalyst and can suppress the generation of hydrogen peroxide. According to the present invention, provided is a supported metal catalyst, comprising: a support powder; and metal fine particles supported on the support powder, wherein: the support powder is an aggregate of support fine particles; the support fine particles have a chained portion structured by a plurality of crystallites being fusion-bonded to form a chain; the support fine particles are structured with a metal oxide; the metal oxide contains cerium; and an electric conductivity of the supported metal catalyst is 10?4 S/cm or higher.

Abstract: A bead string of tin oxide crystallite or a bead string of complex oxide crystallite of tin oxide and titanium oxide contains tantalum and has specific hue as well as a crystallite size on the order of nanometer, and exhibits excellent conductivity and improves the catalytic activity. A bead string includes a tin oxide crystal particle aggregate or a crystal particle aggregate of a complex oxide of tin oxide and titanium oxide, in which the crystal particle aggregate contains at least one particle having a crystallite size of 5 to 50 nm, and when the crystal particle aggregate is pressed under a pressure of 0.1 MPa to have a thickness of 1 cm, in the color of the resultant particle aggregate represented by Lab color space, a lightness L* value is 80 or less, a chromaticity a* value is ?4 or less, and a chromaticity b* is ?3 or less.

Abstract: A support and metal catalyst with improved electric conductivity is provided. A support and metal catalyst, including: a support powder; and metal fine particles supported on the support powder; wherein: the support powder is an aggregate of support fine particles; the support fine particles have a chained portion structured by a plurality of crystallites being fusion bonded to form a chain; the support fine particles are structured with metal oxide; and the metal oxide is doped with a dopant element, and an atomic ratio of titanium with respect to total of titanium and tin is 0.30 to 0.80, is provided.

Abstract: An evaporator used in a car air conditioner satisfies a a relation of 0.9?P1/P2?1.1, where P1 is the passage cross sectional area of each portion of a refrigerant discharge passage of a refrigerant inlet outlet member of the evaporator, and P2 is the passage cross sectional area of a pipe which establishes communication between a second refrigerant passage of an expansion valve and a compressor. Preferably, relations of W1>W2 and H1>H2 are satisfied, where W1 and H1 are the internal width and height of an upstream end portion of a straight portion of an outward bulged portion of a third plate of the refrigerant inlet outlet member, and W2 and H2 are the internal width and height of a downstream end portion of the outward bulged portion.

Abstract: An evaporator used in a car air conditioner satisfies a a relation of 0.9?P1/P2?1.1, where P1 is the passage cross sectional area of each portion of a refrigerant discharge passage of a refrigerant inlet outlet member of the evaporator, and P2 is the passage cross sectional area of a pipe which establishes communication between a second refrigerant passage of an expansion valve and a compressor. Preferably, relations of W1>W2 and H1>H2 are satisfied, where W1 and H1 are the internal width and height of an upstream end portion of a straight portion of an outward bulged portion of a third plate of the refrigerant inlet outlet member, and W2 and H2 are the internal width and height of a downstream end portion of the outward bulged portion.

Abstract: Each of front and rear side walls of a first member of a tank main body of each header tank of an evaporator has protrusions provided at longitudinal opposite ends thereof and projecting outward in the vertical direction. Front and rear outward projecting walls of a third member are cut away at the longitudinal opposite ends. The third member has protrusions provided at the longitudinal opposite ends of each of the front and rear side walls. Each protrusion is overlappingly located on the inner side of the corresponding protrusion of the first member, and is brazed thereto. Each engagement claw of each end member has a first portion brazed to the outer surface of the corresponding protrusion of the first member, and a second portion bent inward in the front-rear direction such that it engages with the corresponding protrusion, and its distal end is located inward of the outer surface.

Abstract: A heat exchanger for use as an evaporator includes a heat exchange core having a plurality of heat exchange tubes arranged in a left-right direction at a spacing, and a refrigerant turn tank as a lower tank disposed toward a lower end of the heat exchange core. The heat exchange tubes are inserted through respective tube insertion holes formed in the turn tank and joined to the tank. The turn tank has drain grooves each extending from a forwardly or rearwardly outer end of each of the tube insertion holes for discharging condensation water to below the turn tank therethrough. Each of the drain grooves has a bottom extending gradually downward as the bottom extends away from the tube insertion hole. the exchanger is used as the evaporator, the top surface of the turn tank can be drained of water with an improved efficiency.

Abstract: An evaporator 1 comprises a heat exchange core 10 comprising a plurality of tube groups 5 arranged in rows as spaced forwardly or rearwardly of the evaporator and each comprising a plurality of heat exchange tubes 4 arranged in parallel at a spacing laterally of the evaporator, and a lower tank 3 disposed at a lower end of the core 10 and having connected thereto lower ends of the heat exchange tubes 4 providing the tube groups 5. The lower tank 3 has a top surface 3a, front and rear opposite side surfaces 3b and a bottom surface 3c. The lower tank 3 is provided in each of front and rear opposite side portions thereof with grooves 29 formed between respective laterally adjacent pairs of heat exchange tubes 4 and extending from an intermediate portion of the top surface 3a with respect to the forward or rearward direction to the side surface 3b for causing water condensate to flow therethrough.

Abstract: An evaporator includes a plurality of heat exchange tubes extending vertically and arranged in rows spaced apart from each other in a front-rear direction. A drainage acceleration member extending vertically is disposed between the adjacent front and rear heat exchange tubes. A gap is present between each of the adjacent front and rear heat exchange tubes, and the drainage acceleration member disposed between the front and rear heat exchange tubes. The gaps serve as drain channels. The evaporator exhibits excellent drainage of condensed water.

Abstract: An evaporator includes a plurality of heat exchange tubes extending vertically and arranged in rows spaced apart from each other in a front-rear direction. A drainage acceleration member extending vertically is disposed between the adjacent front and rear heat exchange tubes. A gap is present between each of the adjacent front and rear heat exchange tubes, and the drainage acceleration member disposed between the front and rear heat exchange tubes. The gaps serve as drain channels. The evaporator exhibits excellent drainage of condensed water.

Abstract: An evaporator includes a plurality of flat heat exchange tubes extending in a vertical direction and arranged at intervals along a left-right direction with a width direction thereof coinciding with a front-rear direction. The heat exchange tube has a plurality of refrigerant channels arranged along the width direction. The evaporator satisfies a relation 0.558?A?1.235, where A is a value in pieces/mm obtained by dividing the number N of the refrigerant channels of the heat exchange tube by a width W of the heat exchange tube as measured in the front-rear direction. Also, the evaporator satisfies a relation 0.35?Dh?1.0, where Dh is an equivalent diameter in mm of the heat exchange tube. This evaporator can reduce the temperature difference between air discharged into a compartment when a compressor is turned ON and that when the compressor is turned OFF.

Abstract: A heat exchanger for use as an evaporator includes a heat exchange core having a plurality of heat exchange tubes arranged in a left-right direction at a spacing, and a refrigerant turn tank as a lower tank disposed toward a lower end of the heat exchange core. The heat exchange tubes are inserted through respective tube insertion holes formed in the turn tank and joined to the tank, The turn tank has drain grooves each extending from a forwardly or rearwardly outer end of each of the tube insertion holes for discharging condensation water to below the turn tank therethrough. Each of the drain grooves has a bottom extending gradually downward as the bottom extends away from the tube insertion hole.

Abstract: A heat exchanger includes a refrigerant inlet-outlet tank, a refrigerant turn tank, and tube groups in the form of at least two rows arranged between the two tanks, and each including a plurality of heat exchange tubes. The refrigerant inlet-outlet tank has its interior divided into a refrigerant inlet header chamber and a refrigerant outlet header chamber. The refrigerant turn tank has its interior divided by a divided flow control plate into a refrigerant inflow header chamber and a refrigerant outflow header chamber. The divided flow control plate has refrigerant dam portions at respective opposite end portions thereof, and a refrigerant passing portion provided between the dam portions and having one or at least two refrigerant passing holes. The heat exchanger exhibits improved heat exchange performance when used as an evaporator.

Abstract: An evaporator 1 comprises a heat exchange core 10 comprising a plurality of tube groups 5 arranged in rows as spaced forwardly or rearwardly of the evaporator and each comprising a plurality of heat exchange tubes 4 arranged in parallel at a spacing laterally of the evaporator, and a lower tank 3 disposed at a lower end of the core 10 and having connected thereto lower ends of the heat exchange tubes 4 providing the tube groups 5. The lower tank 3 has a top surface 3a, front and rear opposite side surfaces 3b and a bottom surface 3c. The lower tank 3 is provided in each of front and rear opposite side portions thereof with grooves 29 formed between respective laterally adjacent pairs of heat exchange tubes 4 and extending from an intermediate portion of the top surface 3a with respect to the forward or rearward direction to the side surface 3b for causing water condensate to flow therethrough.