公开(公告)号：US11754329B2

公开(公告)日：2023-09-12

申请号：US17230842

申请日：2021-04-14

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Szu-Chia Lin ,  Shih-Jie Wei ,  Ren-Hao Lu ,  Yu-Hsuan Wu

IPC: F25B49/02 ,  F25D17/06 ,  F25B13/00

CPC classification number: F25B49/022 ,  F25B13/00 ,  F25D17/06

Abstract: A cooling system for cooling a machine tool having a machine temperature. The cooling system comprises gas source, refrigeration circulation, fan, and controller. The gas source is configured for providing gas. The refrigeration circulation comprises heat exchanger, compressor, condenser, and expansion valve. The heat exchanger is in fluid communication with the gas source and configured to cool the gas down to target temperature and to provide the gas to the machine tool. The compressor has operation frequency. The fan is configured to cool the condenser and has a rotation speed. The controller is connected to the compressor and the fan. When a target temperature difference that is equal to the machine temperature minus the target temperature is smaller than threshold temperature difference, the controller keeps the operation frequency at minimum frequency and sets the rotation speed to be smaller than a maximum rotation speed.

公开(公告)号：US11052504B1

公开(公告)日：2021-07-06

申请号：US16785696

申请日：2020-02-10

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Shi-Jie Luo ,  Hsi-Hung Hsiao ,  Kun-Ying Li ,  Shih-Jie Wei ,  Yan-Sin Liao ,  Szu-Chia Lin ,  Yu-Hsuan Wu

IPC: B23Q11/14 ,  G05B15/02 ,  B23Q11/00

Abstract: A temperature regulation system and a temperature regulation method are applicable to a machine tool. The temperature regulation system includes a cooling fluid storage tank, a heating fluid storage tank, an internal circulation subsystem, an external circulation subsystem and a computing unit. The internal circulation subsystem includes a first valve. The external circulation subsystem includes a plurality of flow channels and a second valve and a third valve disposed on the plurality of the flow channels. The computing unit controls the first valve, the second valve and the third valve to switch flow directions of the plurality of the flow channels among the cooling fluid storage tank, the heating fluid storage tank and machine tool. Therefore, a thermal balance of the machine tool can be effectively maintained.