US 12,271,157 B2Granted

Temperature control system with circulating fluid

AssigneeKELK Ltd.

InventorKazuhiro Mimura

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Abstract

A temperature control system includes: first adjusting the temperature of fluid in a first portion the fluid having a first temperature determined based on a second temperature higher than the first temperature or the second temperature; second adjusting the temperature of the fluid supplied to a target at a second portion between the first portion and the target; first detecting the temperature of first fluid supplied from the first to second portion; second detecting the temperature of the fluid or the target at a predetermined position between an outlet of the second portion and an inlet of the first portion; controlling the first adjusting based on the first detected value such that the temperature of the first fluid becomes a first temperature; and controlling the second adjusting based on a the second detected such that the temperature of the fluid becomes a second temperature at the predetermined position.

Claims15

Dependent claims

A temperature control system, comprising:

a circulation flow path that includes a temperature control target, the circulation flow path through which fluid flows;
a first temperature control device that adjusts a temperature of the fluid in a first portion of the circulation flow path by supplying, to the first portion, at least one of the fluid having a first temperature or the fluid having a second temperature higher than the first temperature;
a second temperature control device that adjusts the temperature of the fluid supplied to the temperature control target at a second portion of the circulation flow path between the first portion and the temperature control target;
a first temperature sensor that detects the temperature of the fluid supplied from the first portion to the second portion;
a second temperature sensor that detects the temperature of the fluid or the temperature control target at a predetermined position in the circulation flow path between an outlet of the second portion and an inlet of the first portion;
a first controller that controls the first temperature control device on a basis of a detection value of the first temperature sensor such that the temperature of the fluid supplied from the first portion to the second portion becomes a first target temperature;
and
a second controller that controls the second temperature control device on a basis of a detection value of the second temperature sensor such that the temperature of the fluid becomes a second target temperature at the predetermined position,
wherein the first target temperature is determined on a basis of the second target temperature,
wherein the predetermined position is set between the second portion and the temperature control target, and
wherein the first target temperature is determined on a basis of the second target temperature and a specified value related to temperature control capability of the second temperature control device.

8 more elements

A temperature control system, comprising:

a circulation flow path that includes a temperature control target, the circulation flow path through which fluid flows;
a first temperature control device that adjusts a temperature of the fluid in a first portion of the circulation flow path by supplying, to the first portion, at least one of the fluid having a first temperature or the fluid having a second temperature higher than the first temperature;
a second temperature control device that adjusts the temperature of the fluid supplied to the temperature control target at a second portion of the circulation flow path between the first portion and the temperature control target;
a first temperature sensor that detects the temperature of the fluid supplied from the first portion to the second portion;
a second temperature sensor that detects the temperature of the fluid or the temperature control target at a predetermined position in the circulation flow path between an outlet of the second portion and an inlet of the first portion;
a first controller that controls the first temperature control device on a basis of a detection value of the first temperature sensor such that the temperature of the fluid supplied from the first portion to the second portion becomes a first target temperature;
and
a second controller that controls the second temperature control device on a basis of a detection value of the second temperature sensor such that the temperature of the fluid becomes a second target temperature at the predetermined position,
wherein the first target temperature is determined on a basis of the second target temperature,
wherein the predetermined position is set between an inlet of the temperature control target and an inlet of the first temperature control device, and
wherein the first target temperature is determined on a basis of the second target temperature, a specified value related to a temperature control capability of the second temperature control device, and the detection value of the second temperature sensor.

8 more elements

A temperature control system, comprising:

a circulation flow path that includes a temperature control target, the circulation flow path through which fluid flows;
a first temperature control device that adjusts a temperature of the fluid in a first portion of the circulation flow path by supplying, to the first portion, at least one of the fluid having a first temperature or the fluid having a second temperature higher than the first temperature;
a second temperature control device that adjusts the temperature of the fluid supplied to the temperature control target at a second portion of the circulation flow path between the first portion and the temperature control target;
a first temperature sensor that detects the temperature of the fluid supplied from the first portion to the second portion;
a second temperature sensor that detects the temperature of the fluid or the temperature control target at a predetermined position in the circulation flow path between an outlet of the second portion and an inlet of the first portion;
a first controller that controls the first temperature control device on a basis of a detection value of the first temperature sensor such that the temperature of the fluid supplied from the first portion to the second portion becomes a first target temperature;
and
a second controller that controls the second temperature control device on a basis of a detection value of the second temperature sensor such that the temperature of the fluid becomes a second target temperature at the predetermined position,
wherein the first target temperature is determined on a basis of the second target temperature,
wherein the predetermined position is set between an inlet of the temperature control target and an inlet of the first temperature control device, and
wherein the second controller comprises:
a feedback control unit that outputs a control command to the second temperature control device on a basis of the detection value of the second temperature sensor;
and
a feedforward control unit that outputs a control command to the second temperature control device on a basis of a thermal disturbance drive signal input to the temperature control target, a dynamic characteristic model of the temperature control target, and a dynamic characteristic model of the second temperature control device.

11 more elements

A temperature control system, comprising:

a circulation flow path that includes a temperature control target, the circulation flow path through which fluid flows;
a first temperature control device that adjusts a temperature of the fluid in a first portion of the circulation flow path by supplying, to the first portion, at least one of the fluid having a first temperature or the fluid having a second temperature higher than the first temperature;
a second temperature control device that adjusts the temperature of the fluid supplied to the temperature control target at a second portion of the circulation flow path between the first portion and the temperature control target;
a first temperature sensor that detects the temperature of the fluid supplied from the first portion to the second portion;
a second temperature sensor that detects the temperature of the fluid or the temperature control target at a predetermined position in the circulation flow path between an outlet of the second portion and an inlet of the first portion;
a first controller that controls the first temperature control device on a basis of a detection value of the first temperature sensor such that the temperature of the fluid supplied from the first portion to the second portion becomes a first target temperature;
and
a second controller that controls the second temperature control device on a basis of a detection value of the second temperature sensor such that the temperature of the fluid becomes a second target temperature at the predetermined position,
wherein the first target temperature is determined on a basis of the second target temperature,
wherein the predetermined position is set between an inlet of the temperature control target and an inlet of the first temperature control device, and
wherein the second controller comprises:
a feedback control unit that outputs a control command to the second temperature control device on a basis of the detection value of the second temperature sensor;
and
a preview feedforward control unit that outputs a control command to the second temperature control device on a basis of a thermal disturbance drive future signal scheduled to be input to the temperature control target, a dynamic characteristic model of the temperature control target, and a dynamic characteristic model of the second temperature control device.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/911,884Filed 12 Feb 2021
Priority: JP 2020-04835118 Mar 2020
Published: US 2023/0147288 A111 May 2023
Granted: 8 Apr 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

G05B 11/42
With provision for obtaining particular characteristics, e.g. proportional, integral, differential: for obtaining a characteristic which is both…
G05D 23/1393
By varying the mixing ratio of two fluids having different temperatures: characterised by the use of electric means
G05D 23/1902
Characterised by the use of electric means: characterised by the use of a variable reference value
G05D 23/1927
Characterised by the use of electric means: using a plurality of sensors