Kazushige Kasai

20130277018, Oct 24, 2013

Apr 23, 2012

13/453352

Mitsuharu NUMATA - Plymouth MN, US
Kazushige KASAI - Minnetonka MN, US

AAF-MCQUAY INC. - Minneapolis MN

F28D 7/00

165157

A heat exchanger includes a shell, a refrigerant distribution assembly and a heat transferring unit. The refrigerant distribution assembly includes a first tray part and second tray parts. The first tray part continuously extends generally parallel to the longitudinal center axis of the shell to receive a refrigerant that enters the shell. The second tray parts are disposed below the first tray part to receive the refrigerant discharged from first discharge apertures such that the refrigerant accumulated in the second tray parts does not communicate between the second tray parts. The second tray parts are aligned along a direction generally parallel to the longitudinal center axis of the shell. The heat transferring unit is disposed below the second tray parts so that the refrigerant discharged from second discharge apertures of the second tray parts is supplied to the heat transferring unit.

20130277019, Oct 24, 2013

Apr 23, 2012

13/453427

Mitsuharu NUMATA - Plymouth MN, US
Kazushige KASAI - Minnetonka MN, US

AAF-MCQUAY INC. - Minneapolis MN

F28D 7/00

165157

A heat exchanger is adapted to be used in a vapor compression system, and includes a shell, a distributing part and a tube bundle. The tube bundle includes a plurality of heat transfer tubes arranged in a plurality of columns extending parallel to each other when viewed along the longitudinal center axis of the shell. The heat transfer tubes has at least one of: an arrangement in which a vertical pitch between adjacent ones of the heat transfer tubes in at least one of the columns is larger in an upper region of the tube bundle than in a lower region of the tube bundle; and an arrangement in which a horizontal pitch between adjacent ones of the columns is larger in an outer region of the tube bundle than in an inner region of the tube bundle.

20130277020, Oct 24, 2013

Apr 23, 2012

13/453503

Mitsuharu NUMATA - Plymouth MN, US
Kazushige KASAI - Minnetonka MN, US

AAF-MCQUAY INC. - Minneapolis MN

F28D 7/00

165157

A heat exchanger is adapted to be used in a vapor compression system, and includes a shell, a distributing part, a tube bundle and a trough part. The shell has a longitudinal center axis extending generally parallel to a horizontal plane. The distributing part is configured and arranged to distribute a refrigerant. The tube bundle includes a plurality of heat transfer tubes disposed below the distributing part so that the refrigerant discharged from the distributor is supplied onto the tube bundle. The heat transfer tubes extend generally parallel to the longitudinal center axis. The trough part extends generally parallel to the longitudinal center axis under at least one of the heat transfer tubes to accumulate the refrigerant therein. The trough part at least partially overlaps with the at least one of the heat transfer tubes when viewed along a horizontal direction perpendicular to the longitudinal center axis.

20130319636, Dec 5, 2013

Mar 15, 2013

13/839867

John M. Bauer - Hanover MN, US
Kazushige Kasai - Minnetonka MN, US
Kazuo Fujisaki - St Louis Park MN, US

F28F 1/00

16510419

A coil system for an outdoor heat exchanger in a HVAC system. The coil system comprises an integrated subcooler coil section positioned between the primary coil section and the expansion valve. A distributor combines the individual refrigerant streams from the coils of the primary coil section into a single refrigerant stream before separating the stream among the different coils of the subcooler section. The subcooler coil section is positioned such that the incoming air stream is directed directly at the subcooler coil section to maximize the difference in temperature between the air stream and the refrigerant within the subcooler section.

20110259551, Oct 27, 2011

Apr 23, 2010

12/766025

Kazushige Kasai - Minnetonka MN, US
Takaya Ishiguro - St. Louis Park MN, US

F28F 27/02
F16K 11/10

165100, 137597

A flow distributor is adapted to distribute two-phase refrigerant into a plurality of flow paths. The flow distributor includes a tubular main body having a center axis, at least one inlet port, and a plurality of outlet ports. The inlet port is disposed in a lower portion of the main body in a state in which the center axis of the main body is oriented in a generally vertical direction. The inlet port has a center axis that is not parallel to and does not intersect with the center axis of the main body so as to generate an upward spiraling flow of the refrigerant within the main body. The outlet ports form a plurality of openings disposed in an upper portion of the main body in the state in which the center axis of the main body is oriented in the generally vertical direction, with all of the openings being at least partially arranged in a plane orthogonal to the center axis of the main body.

20150053378, Feb 26, 2015

Aug 23, 2013

13/974439

- Minneapolis MN, US
Kazushige KASAI - Minnetonka MN, US

AAF-MCQUAY INC. - Minneapolis MN

F25B 39/02

165157

A heat exchanger for a vapor compression system includes a shell, a distributing part disposed inside of the shell to distribute a refrigerant, a tube bundle and a trough part. The tube bundle includes a plurality of heat transfer tubes disposed inside of the shell below the distributing part. The tube bundle includes a falling film region disposed below the distributing part, an accumulating region disposed below the falling film region, and a flooded region disposed below the accumulating region at a bottom portion of the shell. The trough part extends under at least one of the heat transfer tubes in the accumulating region to accumulate the refrigerant therein. The trough part at least partially overlaps with the at least one of the heat transfer tubes in the accumulating region when viewed along a horizontal direction perpendicular to the longitudinal center axis of the shell.

20150013950, Jan 15, 2015

Jul 11, 2013

13/939786

- Minneapolis MN, US
Kazushige KASAI - Minnetonka MN, US

F28F 9/007

165157

A heat exchanger includes a shell, a refrigerant distribution assembly, a heat transferring unit and a canopy member. The refrigerant distribution assembly receives a refrigerant that enters the shell and discharges the refrigerant. The refrigerant distribution assembly has at least one outermost lateral end. The heat transferring unit is disposed below the refrigerant distribution assembly so that the refrigerant discharged from the refrigerant distribution assembly is supplied to the heat transferring unit. The heat transferring unit includes a plurality heat transfer tubes. The canopy member includes at least one lateral side portion extending laterally outwardly and downwardly from a position above the refrigerant distribution assembly. The lateral side portion has a free end disposed laterally further from a vertical plane than the refrigerant distribution assembly, and lower than an upper edge of the outermost lateral end of the refrigerant distribution assembly.

20150013951, Jan 15, 2015

Jul 11, 2013

13/939813

- Minneapolis MN, US
Kazushige KASAI - Minnetonka MN, US

F28D 15/00

165157

A heat exchanger for a vapor compression system includes a shell with a longitudinal center axis extending generally parallel to a horizontal plane, a distributing part, a tube bundle, a trough part and a guide part. The distributing part distributes a refrigerant. The tube bundle includes a plurality of heat transfer tubes disposed below the distributing part so that the refrigerant discharged from the distributing part is supplied onto the tube bundle. The heat transfer tubes extend generally parallel to the longitudinal center axis of the shell. The trough part extends generally parallel to the longitudinal center axis of the shell under at least one of the heat transfer tubes to accumulate the refrigerant in the trough part. The guide part includes at least one lateral side portion extending upwardly and laterally outwardly from the tube bundle at a vertical position at an upper end of the trough part.