US 11,052,504 B1Granted

Temperature regulation system and temperature regulation method for machine tool

AssigneeIndustrial Technology Research Institute

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

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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.

Claims24

Dependent claims

A temperature regulation system applicable to a machine tool, the temperature regulation system comprising:

a cooling fluid storage tank, in which a heat exchanger is disposed;
a heating fluid storage tank, in which a heat exchanger is disposed;
an internal circulation subsystem, comprising:
a compressor;
a condenser;
an expansion valve;
and
a first valve configured for switching the compressor, such that coolant compressed by the compressor flows to the heat exchanger in the heating fluid storage tank, or flows through the condenser and the expansion valve sequentially to the heat exchanger in the cooling fluid storage tank;
an external circulation subsystem, comprising:
at least one cooling flow channel connected through the cooling fluid storage tank to a first portion of the machine tool;
at least one heating flow channel connected through the heating fluid storage tank to a second portion of the machine tool;
a first returning flow channel connected through the first portion to the cooling fluid storage tank;
a second returning flow channel connected through the second portion to the heating fluid storage tank;
at least one second valve disposed on the cooling flow channel and the heating flow channel and configured for switching a flow direction between the cooling flow channel and the first portion and a flow direction between the heating flow channel and the second portion;
and
a third valve disposed on the first and second returning flow channels and configured for switching a flow direction between the first returning flow channel and the cooling fluid storage tank and a flow direction between and the second returning flow channel and the heating fluid storage tank;
and
a computing unit configured for controlling the first valve, the second valve and the third valve.

15 more elements

A temperature regulation method applicable to a machine tool, the temperature regulation method comprising:

disposing a temperature regulation system in the machine tool, the temperature regulation system comprising:
a cooling fluid storage tank;
a heating fluid storage tank;
an internal circulation subsystem comprising:
a compressor;
a condenser;
an expansion valve;
and
a first valve;
an external circulation subsystem comprising:
at least one cooling flow channel connected through the cooling fluid storage tank to a first portion of the machine tool;
at least one heating flow channel connected through the heating fluid storage tank to a second portion of the machine tool;
a first returning flow channel connected from the first portion to the cooling fluid storage tank;
a second returning flow channel connected from the second portion to the heating fluid storage tank;
a second valve disposed on the cooling flow channel and the heating flow channel;
and
a third valve disposed on the first and second returning flow channels;
and
a computing unit;
determining a temperature state of the internal circulation subsystem, to enable the computing unit to control the first valve to switch a coolant compressed by the compressor to flow to the heating fluid storage tank, or to flow through the condenser and the expansion valve sequentially to the cooling fluid storage tank;
and
determining a temperature state of the external circulation subsystem, to enable the computing unit to control the second valve to switch a flow direction between the cooling flow channel and the first portion and a flow direction between the heating flow channel and the second portion, and to control the third valve to switch a flow direction between the first returning flow channel and the cooling fluid storage tank and a flow direction between the second returning flow channel and the heating fluid storage tank.

19 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/785,696Filed 10 Feb 2020
Granted: 6 Jul 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

B23Q 11/141
Methods or arrangements for maintaining a constant temperature in parts of machine tools: using a closed fluid circuit for cooling or heating
G05B 19/404
Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to…
B23Q 11/0003
Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work ; Safety devices…:…
G05B 15/02
Systems controlled by a computer: electric