公开(公告)号：US20180094841A1

公开(公告)日：2018-04-05

申请号：US15718282

申请日：2017-09-28

Applicant: Johnson Controls Technology Company

Inventor： Douglas A. Kester ,  Curtis W. Caskey ,  James K. Spitzer ,  Chandra Yelamanchili ,  Nicholas P. Mislak ,  Rajiv K. Karkhanis

IPC: F25B41/06 ,  F25B49/02 ,  F25B43/00

CPC classification number: F25B41/062 ,  F25B39/00 ,  F25B39/028 ,  F25B40/02 ,  F25B41/067 ,  F25B43/006 ,  F25B49/02 ,  F25B49/022 ,  F25B2341/062 ,  F25B2341/0662 ,  F25B2341/0683 ,  F25B2400/13 ,  F25B2500/19 ,  F25B2600/0253 ,  F25B2600/2513 ,  F25B2700/13 ,  F25B2700/1931 ,  F25B2700/195 ,  F25B2700/197 ,  F25B2700/2115 ,  F25B2700/21163 ,  F25B2700/21175

Abstract: A cooling system includes an expansion valve configured to exert a first pressure drop on refrigerant circulated through the cooling system. The cooling system also includes a plurality of capillary expansion tubes fluidly coupled in parallel to an output of the expansion valve and configured to exert a second pressure drop on the refrigerant circulated through the cooling system. The cooling system also includes a controller communicatively coupled to the expansion valve, wherein the controller is configured to control magnitude of the first pressure drop by instructing the expansion valve to adjust the valve position based at least in part on refrigerant mass flow expected to be supplied to the expansion valve to facilitate substantially uniformly distributing the refrigerant mass flow between each of the plurality capillary expansion tubes.

公开(公告)号：US20180094840A1

公开(公告)日：2018-04-05

申请号：US15718291

申请日：2017-09-28

Applicant: Johnson Controls Technology Company

Inventor： Douglas A. Kester ,  Curtis W. Caskey ,  James K. Spitzer ,  Chandra Yelamanchili ,  Nicholas P. Mislak ,  Rajiv K. Karkhanis

IPC: F25B40/02 ,  F25B41/06 ,  F25B39/00

CPC classification number: F25B41/062 ,  F25B39/00 ,  F25B39/028 ,  F25B40/02 ,  F25B41/067 ,  F25B43/006 ,  F25B49/02 ,  F25B49/022 ,  F25B2341/062 ,  F25B2341/0662 ,  F25B2341/0683 ,  F25B2400/13 ,  F25B2500/19 ,  F25B2600/0253 ,  F25B2600/2513 ,  F25B2700/13 ,  F25B2700/1931 ,  F25B2700/195 ,  F25B2700/197 ,  F25B2700/2115 ,  F25B2700/21163 ,  F25B2700/21175

Abstract: A cooling system includes a subcooling heat exchange assembly, which controls magnitude of subcooling of refrigerant circulated through the cooling system. The subcooling heat exchange assembly includes a first fluid line fluidly coupled to an output of a condenser to enable a first portion of the refrigerant output from the condenser to flow through the first fluid line; a second fluid line fluidly coupled to the output of the condenser to enable a second portion of the refrigerant output from the condenser to flow through the second fluid line; and an expansion valve disposed along the second fluid line, in which the expansion valve exerts a first pressure drop on the second portion of the refrigerant that facilitates extracting heat from the first portion of the refrigerant flowing through the first fluid line using the second portion of the refrigerant flowing through the second fluid line when valve position of the expansion valve is greater than a threshold position. Additionally the cooling system includes a plurality of capillary expansion tubes fluidly coupled in parallel to an output of the first fluid line and that to exert a second pressure drop on the refrigerant circulated through the cooling system.