JP2001228924A - Method for high speed change of setting of temperature controlled fluid temperature in heat exchanger and circulator provided with method and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and device for speedily changing the set temperature of a temperature controlled fluid in a heat exchanger. SOLUTION: The heat exchanger 14 is provided with the first circulation system 1 for feeding a heating medium for temperature control for making the thermostatic fluid at a necessary temperature, a second circulation system 2 where the heating medium for changing a temperature adjusted to be at a temperature to which the temperature controlled fluid is tried to be changed is circulated, a communicated duct 5 for communicating the system 2 with the exchanger 14, and a cross valve 6 for feeding the heating medium for changing the temperature flowing through the system 2 to the exchanger 14 by switching. Since the heating medium for changing the temperature of the second circulation system adjusted to the temperature to which it is desired to be changed is fed to the exchanger 14 of the system 1 when the valve 6 is switched, the set temperature of the temperature controlled fluid is speedily changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a circulator for flowing a temperature control heat medium to a heat exchanger for precisely adjusting a temperature control fluid to a required temperature, and it is necessary to change the temperature of the temperature control fluid. The present invention relates to a method for changing the setting of the temperature of a temperature-controlled fluid at a high speed so that the setting can be changed at a high speed, and a circulator provided with a device for changing the setting.

[0002]

2. Description of the Related Art A pump for pumping a heat medium to a pipe extending from a heat medium tank through a heat medium circulating system including a heat exchanger for precisely adjusting a temperature control fluid to a required temperature, and A circulator configured to provide temperature control means for adjusting the heat medium to a required temperature, and to dispose a heat exchanger downstream of the heat medium, and to recirculate the heat medium passing through the heat exchanger to the heat medium tank. Is conventionally known.

[0003] In the circulator including the above-mentioned known heat exchanger, there is no problem in that the temperature of the temperature control fluid can be adjusted to a required temperature by the heat exchanger. When changing the temperature of the conditioning fluid, there is a problem that the change takes a long time. That is, the temperature control means for adjusting the temperature of the heat medium to a required temperature should be capable of slightly adjusting the temperature of the heat medium because the heat medium is almost at the required temperature in a steady operating state. Therefore, it is not necessary to provide a high temperature control ability. However, when trying to change the temperature of the temperature control fluid in the heat exchanger, it is necessary to change the temperature of the heat medium in as short a time as possible in order to shorten the standby time. In order to realize this, it is necessary to sufficiently increase the temperature adjusting ability of the temperature adjusting means, but it is extremely uneconomical to increase the temperature adjusting ability only for changing the set temperature. .

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a circulator for flowing a temperature control heat medium through a heat exchanger for precisely adjusting a temperature control fluid to a required temperature. It is an object of the present invention to provide a high-speed setting change method of a temperature-regulated fluid temperature and a circulator provided with the device so that the setting can be changed at a high speed when it becomes necessary to change the temperature. Another object of the present invention is to eliminate the necessity of sufficiently increasing the temperature control capability of the temperature control means only for changing the set temperature, so that the equipment can be simplified by the low-power temperature control means. Circulator is provided. Still another object of the present invention is to provide a high-speed setting change method and a circulator provided with the apparatus, which can improve the temperature control accuracy while using the low-power temperature control means.

[0005]

According to a first aspect of the present invention, there is provided a method for changing the temperature of a temperature control fluid at a high speed, comprising: a first circulating system for circulating a constant-temperature heat medium for temperature control through a heat exchanger; And a second circulating system for circulating and flowing a set temperature changing heat medium whose temperature has been adjusted to the set temperature to be changed, wherein the first circulating system is used for changing the setting of the temperature control fluid temperature in the heat exchanger. It is characterized in that a heat medium for temperature change in the second circulation system is introduced into the system in place of the heat medium for temperature control flowing through the heat exchanger.

[0006] In the high-speed setting change method, the amount of the temperature changing heat medium circulating in the second circulating system is sufficiently larger than the amount of the temperature adjusting heat medium circulating in the first circulating system. When the set temperature of the temperature control fluid in the exchanger is changed, the surplus heat medium of the first circulation system generated by the introduction of the temperature change heat medium from the second circulation system is used to change the temperature of the second circulation system. It is appropriate to make it flow into the heating medium tank.

Further, the circulator of the present invention provided with an apparatus for performing the above method includes a first circulating system for circulating a constant-temperature heat medium for temperature control for temperature control through a heat exchanger; A second circulating system for circulating and flowing a constant-temperature temperature-change heat medium whose temperature has been adjusted to the set temperature to be changed, and a second high-speed setting-temperature changing device for the temperature control fluid temperature in the heat exchanger. The above-mentioned temperature-changing heat medium pumped through the pipe is switched to the heat exchanger side in the first circulation system and fed to a pipe on the discharge side of the pump for pumping the temperature-changing heat medium in the circulation system. A switching means is provided.

In the circulator, a plurality of second circulation systems are provided, and a switching means for switching the temperature change heat medium in the circulation systems to the first circulation system for feeding is provided by the first circulation system. The switching means can be selectively switched to the heat exchanger side, and the switching means includes a temperature changing heat medium for changing the temperature between the heat exchanger side in the first circulation system and the temperature change in the second circulation system. It is appropriate to provide a three-way valve for switching and feeding to the heating medium tank side.

Further, as the circulator, a temperature control pump for pumping the temperature control heat medium to a pipe extending from the temperature control heat medium tank through the first circulation system, and the temperature control heat medium to a required temperature. In addition to providing a temperature control means for adjusting, a heat exchanger is disposed downstream of the heat control means, and a pipe line for returning the heat medium for temperature control passed through the heat exchanger to the heat medium tank for temperature control is provided. The temperature control heat medium tank may be provided with an overflow pipe for flowing an excess heat medium to the temperature change heat medium tank in the second circulation system.

In the circulator of the present invention having the above-described structure, when the temperature of the temperature control fluid in the heat exchanger is to be changed by changing conditions, the temperature is adjusted to a required temperature by using the first circulation system. A stage in which the temperature-change heat medium flowing through the second circulation system is previously adjusted to the temperature to be changed at the stage of supplying the heat-regulated heat medium to the heat exchanger, and the set temperature is switched. Then, the three-way valve constituting the switching means is switched to supply the constant-temperature heating medium for temperature change flowing through the second circulation system to the heat exchanger side of the first circulation system. In this case, since the temperature changing heat medium in the second circulation system has been set to the temperature to be changed in advance, this temperature changing heat medium is supplied to the heat exchanger to be used in the first circulation system. By changing the temperature control heat medium, the set temperature of the temperature control fluid flowing through the heat exchanger can be changed quickly.

The surplus heat medium generated in the first circulating system by the supply of the temperature changing heat medium flowing through the second circulating system is transferred to the second circulating system by the overflow tube. Since the heat is returned to the tank, the circulation of the heat medium in these circulation systems is not hindered. In this case, by making the amount of the heat medium for temperature change in the second circulation system sufficiently larger than the amount of the heat medium for temperature adjustment circulating in the first circulation system, the amount of the heat medium for temperature adjustment in the first circulation system is increased. Even if the heat medium returns to the temperature change heat medium tank of the second circulation system, the temperature is hardly affected.

When the temperature of the heat medium in the heat exchanger of the first circulation system reaches the temperature of the temperature changing heat medium to be changed, the three-way valve is switched to the original state, and the first state is returned again.
In the circulation system, the heat medium for temperature control adjusted to the temperature after the required change can be supplied to the heat exchanger. In this case, it is a matter of course that the set temperature of the temperature control means in the first circulation system is changed in advance to the temperature to be changed. When a plurality of second circulation systems are provided, the temperature of the temperature changing heat medium flowing through these second circulation systems is adjusted to a temperature to be changed and a temperature to be changed next. In addition, the set temperature of the temperature control fluid flowing through the heat exchanger can be changed more quickly.

When the temperature of the temperature control fluid in the circulator is changed by switching between the first circulation system and the second circulation system in this way, not only can the setting be changed at a high speed, but also the setting temperature can be changed. It is not necessary to sufficiently increase the temperature control capability of the temperature control means for changing the temperature, and therefore the equipment can be simplified by the low power temperature control means, and the temperature control accuracy can be improved. .

[0014]

FIG. 1 shows a first embodiment of a circulator for carrying out a method for rapidly changing the temperature of a temperature control fluid according to the present invention. This circulator needs to be adjusted to a required temperature. A first circulating system 1 for circulating a temperature-controlling heat medium at a constant temperature for adjusting a temperature-controlling fluid such as a resist to a desired temperature; A second circulation system 2 for circulating the heat medium, and a communication line 5 for feeding the heat medium for temperature change flowing through the second circulation system 2 to the heat exchanger 14 of the first circulation system 1 And the heat medium for changing the temperature,
, And a three-way valve 6 as switching means for switching between the circulation to the heat exchanger 14 and the excess heat medium of the first circulation system 1 generated by the switching of the three-way valve 6 to the second circulation system. And an overflow pipe 7 for flowing out.
As the heat medium for temperature control in the first circulating system 1 and the heat medium for temperature change in the second circulating system 2, water can be used, but any other heat medium may be used.

The first circulating system 1 includes a closed-type temperature control heating medium tank 11 for heating or cooling a temperature control fluid to make the temperature control a constant temperature, and circulates the heat medium under pressure. Pump 12, a heat exchanger 13 for heating or cooling the heat medium to adjust the temperature to a required temperature, and a double-pipe heat exchanger 1 for exchanging heat with a temperature control fluid.
And these are sequentially connected by conduits 17a to 17d to form a circulation system returning from the tank 11 to the tank 11. Then, the temperature control heat medium whose temperature has been adjusted to the set temperature in the temperature control heat exchanger 13 is supplied to the heat exchanger 14.
The temperature control fluid supplied to the heat exchanger 14 and flowing through the heat exchanger 14 is adjusted to a required temperature.

The temperature control heat exchanger 13 is configured as a thermo module including two heat exchange sections 13a and 13b and a plurality of Peltier elements 13c therebetween, and energizes the Peltier element 13c. By switching the direction, the temperature control heat medium flowing through one heat exchange section 13a is heated or cooled, and cold water or hot water flows through the other heat exchange section 13b in accordance with the heating or cooling of the heat medium. It is. The temperature of the heat medium for temperature control flowing through the heat exchanger 13 for temperature control detects the temperature of the heat medium on the outlet side of the heat exchanger 13 and controls the amount of current and the direction of current flow to the Peltier element 13c. It is adjusted by the temperature controller 15.

On the other hand, a second circulating system 2 provided below the first circulating system 1 includes an open-type temperature changing heat medium tank 21 for a temperature changing heat medium, and the above-described tank 21 of the tank 21. Temperature change pump 22 for pumping and circulating the heat medium
A temperature changing heat exchanger 23 for heating or cooling the heat medium to adjust the temperature of the temperature control fluid to a desired temperature, and the three-way valve 6 constituting switching means. Are sequentially connected by pipes 27a to 27d to form a circulation system returning from the heat medium tank 21 to the tank 21.

The three-way valve 6 connects the outlet pipe 27c of the temperature changing heat exchanger 23 in the second circulation system 2 with the pipe 27d extending to the heat medium tank 21 and heat exchange in the first circulation system 1. It is switched to the communication pipe line 5 communicating with the vessel 14 side. Further, the capacity of the temperature change heat medium tank 21 is sufficiently larger than the capacity of the temperature control heat medium tank 11, and the overflow pipe 7 provided in the temperature control heat medium tank 11 is provided with a temperature change heat medium. It is open in the tank 21. The temperature change heat exchanger 23 has the same configuration and the same operation as the temperature control heat exchanger 13, and the temperature of the temperature change heat medium is determined by the heat exchanger 23.
Of the heat medium at the outlet side of the Peltier device 23
The temperature is adjusted by a temperature changing controller 25 that controls the amount of current supplied to c and the direction of current supply.

In the circulator of the first embodiment, when there is no change in the set temperature of the temperature control fluid, the three-way valve 6
As a result, the heat medium for temperature change flowing through the second circulation system 2 flows from the outlet pipe 27c of the heat exchanger for temperature change 23 to the pipe 27d extending to the heat medium tank 21.
Since the communication between the circulation system 1 and the second circulation system 2 is interrupted, the heat medium for temperature control adjusted to a required temperature by the heat exchanger 13 for temperature control is sent to the heat exchanger 14. Have been paid. On the other hand, in the second circulation system 2, a temperature changing heat medium adjusted to a temperature to be changed next is circulated by the temperature changing heat exchanger 23.

When the set temperature of the temperature control fluid flowing through the heat exchanger 14 is changed due to a change in conditions or the like, the three-way valve 6 is switched to communicate the temperature changing heat medium flowing through the second circulation system 2. The heat exchanger 14 of the first circulation system 1 is connected by the line 5.
And the temperature of the temperature control heat medium flowing through the first circulating system 1 is controlled by the temperature control controller 15 so as to be equal to the temperature of the temperature change heat medium. First
It is desirable to temporarily stop the temperature control pump 12 of the circulation system 1 until the temperature of the heat medium in the heat medium tank 11 approaches the temperature to be changed. In this case, the capacity of the heat medium tank 21 of the second circulation system 2 is made sufficiently larger than that of the heat medium tank 11 of the first circulation system 1, and
Large amount of the temperature change heat medium flowing through the circulation system 2 of
Moreover, since the temperature is adjusted to the temperature at which the temperature control fluid is to be changed, the temperature of the temperature control heat medium flowing through the first circulation system 1 is changed as compared with the case where the temperature of the temperature control heat medium is changed by the temperature control heat exchanger 13. The temperature of the heat medium supplied to the exchanger 14 can be changed quickly. Therefore, the temperature of the temperature control fluid flowing through the heat exchanger 14 can be quickly changed to a temperature that is to be changed.

When the three-way valve 6 is switched so that the temperature changing heat medium flowing through the second circulation system 2 is supplied to the heat exchanger 14, the amount of heat medium flowing through the first circulation system 1 increases. However, the surplus heat medium flows out to the temperature change heat medium tank 21 of the second circulation system 2 by the overflow pipe 7, so that the temperature change heat medium heat exchanger 14 flowing through the second circulation system 2 There is no problem with the delivery to.

When a predetermined time elapses, the first circulation system 1
When the temperature of the temperature control heat medium circulating through the air reaches the temperature at which the temperature control fluid is to be changed, the three-way valve 6 is switched,
The communication between the second circulation system 2 and the heat exchanger 14 is cut off,
Circulating system 1 is operated. As a result, the temperature control heat medium of the first circulation system 1 having the temperature to be changed is supplied to the heat exchanger 14, and the temperature of the temperature control fluid is adjusted by the temperature control heat medium. In this case, it is a matter of course that the set temperature of the temperature controller 15 in the first circulation system 1 is changed to the temperature to be changed. Further, the switching of the three-way valve 6 causes the temperature-changing heat medium of the second circulation system 2 to circulate regardless of the heat exchanger 14, so that the temperature-changing controller 25 and the temperature-changing heat exchanger 23 allow the temperature to change. The temperature of the changing heat medium can be set to the set temperature to be changed next.

Note that the temperature changing heat medium in the second circulation system 2 does not always need to be constantly circulated, and the time until the set temperature needs to be changed is changed by the next time. When it is longer than the time until the temperature can be adjusted, it is preferable to stop the operation of the second circulation system 2. The replenishment of the heat medium is performed in the second circulation system 2.
Only the heating medium needs to be supplied to the first circulation system 1.

FIG. 2 shows a second embodiment of the circulator according to the present invention.
An embodiment will be described. This embodiment includes a first circulation system 1 and two second circulation systems 2A and 2B arranged side by side. The first circulation system 1 in this embodiment is substantially the same as the first embodiment, and the second circulation systems 2A and 2B are both the same as the second circulation system 2 in the first embodiment. Since they have substantially the same configuration, the same reference numerals are given to the same portions in the drawings, and detailed description thereof will be omitted.

The second circulating systems 2A and 2B have different temperatures of the temperature changing heat medium flowing through these circulating systems, and the first temperature changing heat medium in the circulating systems 2A and 2B is the first temperature changing heat medium. The three-way valves (switching means) 6A and 6B for switching and feeding the circulating system 1 are configured to be selectively switchable. Therefore, the temperature of the temperature change heat medium flowing through one circulation system is set to the temperature to be changed, and the temperature of the temperature change heat medium flowing through the other circulation system is set to the next temperature to be changed. By doing so, it is possible to cope with a high-frequency change of the set temperature. The overflow pipe 7 from the heat medium tank 11
Has branch pipes 7A, 7B branched by a three-way valve 8, and transfers excess heat medium overflowing from the first circulation system 1 to any of the operating second circulation systems 2A, 2B. The medium is switched to the medium tank 21 and discharged.

In the circulator of the second embodiment having the above-described structure, when the temperature of the temperature control fluid is changed, the three-way valve 6A or 6B and the three-way valve 8 are switched to flow through the second circulation system 2A or 2B. One of the temperature changing heat medium is supplied to the heat exchanger 14, and the surplus heat medium in the first circulation system 1 flows out to the heat medium tank 21 of the second circulation system on the same side as the heat medium. Let it. When the temperature of the temperature control fluid is further changed, these three-way valves 6A and 6B
, And the temperature changing heat medium flowing through the other circulation system 2A or 2B is supplied to the heat exchanger 14, and the surplus heat medium is discharged to the other tank. The other operations of the second embodiment are substantially the same as those of the first embodiment, and thus the description thereof is omitted.

FIG. 3 shows a modification of the second embodiment. In this modification, the temperature setting heat medium tanks 21A and 21B in the two second circulation systems 2A and 2B are connected to the communication pipe 30.
It is constituted as what was made to communicate. As in the embodiment of FIG. 2, the overflow pipe 7 in the first circulation system 1 does not have a branch pipe and a three-way valve, and the tip of the overflow pipe 7 is opened to one tank 21A. The other configuration of the above modification is the same as that of the second embodiment of FIG. 2, and therefore, the same reference numerals are given to the same main components in the figure, and detailed description will be omitted. In the modified example having the above configuration, since the two temperature setting heat medium tanks 21A and 21B are connected by the communication pipe 30, the heat medium from the overflow pipe 7 is returned to either of the heat medium tanks 21A and 21B. Even in this case, it is possible to return to the tank of the second circulating system on the operating side directly or through the communication pipe 30, and even if the heat medium in both heat medium tanks 21A and 21B are mixed, the temperature of the heat medium tanks 21A and 21B is not changed. If the difference is not particularly large, the effect can be ignored. Further, since the branch pipe and the three-way valve in the embodiment of FIG. 2 can be omitted, the configuration can be simplified and inexpensive as compared with the embodiment.

[0028]

As described above in detail, according to the present invention, the first circulating system in which the temperature control heat medium circulates and the one in which the change heat medium set to the temperature to be changed circulates. Alternatively, a plurality of second circulation systems are provided, and the switching heat medium is switched by the switching means to the heat exchanger of the first circulation system for supply to the first circulation system. It is possible to quickly change the set temperature of the temperature control fluid by changing a condition or the like.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a modification of the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st circulation system 2, 2A, 2B 2nd circulation system 5 Communication line 6A, 6B, 8 Three-way valve 7 Overflow pipe 11 Temperature control heat medium tank 12 Temperature control pump 13 Temperature control heat exchanger 14 Heat exchanger 21, 21A, 21B Heat medium tank for changing temperature 22 Pump for changing temperature 23 Heat exchanger for changing temperature

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3L060 AA04 CC05 DD08 EE45 5H323 BB02 BB04 CA04 CB12 CB23 CB35 CB42 CB43 CB44 DA01 EE03 FF04 HH02 KK05

Claims (6)

[Claims] 1. A first circulation system for circulating and flowing a constant-temperature heat medium for temperature control to a heat exchanger, and a second circulation system for circulating and flowing a heat medium for setting temperature change adjusted to a set temperature to be changed. When the setting of the temperature control fluid temperature in the heat exchanger is changed,
A high-speed temperature control fluid temperature in the heat exchanger, wherein a temperature change heat medium in the second circulation system is introduced into the first circulation system in place of the temperature control heat medium flowing through the heat exchanger. How to change settings. 2. The temperature control fluid in the heat exchanger, wherein the amount of the temperature changing heat medium circulating in the second circulation system is sufficiently larger than the amount of the temperature control heat medium circulating in the first circulation system. When changing the set temperature of
A surplus heat medium of the first circulation system generated by introduction of the temperature change heat medium from the second circulation system is caused to flow into the temperature change heat medium tank of the second circulation system. A high-speed setting change method of a temperature control fluid temperature in the heat exchanger according to claim 1. 3. A first circulating system for circulating a constant-temperature heat-regulating heat medium for temperature control through a heat exchanger, and a constant-temperature temperature-changing heat medium temperature-controlled to a set temperature to be changed. And a second circulating system for circulating the fluid. As a high-speed device for changing the temperature of the temperature-regulated fluid in the heat exchanger, a pipe on the discharge side of a pump for pumping a heat medium for temperature change in the second circulating system Switching means for switching the temperature-change heat medium, which is pressure-fed through the pipe, to the heat exchanger side in the first circulation system and feeding the heat-change medium, the temperature control in the heat exchanger. A circulator equipped with a fluid temperature high-speed setting change device. 4. A heat exchanger of a first circulating system comprising a plurality of second circulating systems, and a switching means for switching a temperature-changing heat medium in the circulating systems to the first circulating system for feeding. 4. The apparatus according to claim 3, wherein the switchable side is selectively switchable.
A circulator provided with a high-speed setting and changing device for a temperature-regulated fluid temperature in the heat exchanger according to the above item. 5. A switching means comprising a heat medium for temperature change,
5. A three-way valve for switching and feeding between a heat exchanger side in the first circulation system and a temperature change heat medium tank side in the second circulation system.
A circulator provided with a high-speed setting and changing device for a temperature-regulated fluid temperature in the heat exchanger according to the above item. 6. A temperature control pump for pumping a temperature control heat medium to a pipe line extending from a temperature control heat medium tank through a first circulation system, and a temperature control for adjusting the temperature control heat medium to a required temperature. Means are provided, and a heat exchanger is disposed downstream of the heat exchanger, and a pipe for returning the heat medium for temperature control passed through the heat exchanger to the heat medium tank for temperature control is provided, and The heat exchange according to any one of claims 3 to 5, wherein the heat medium tank is provided with an overflow pipe for flowing an excess heat medium to the temperature change heat medium tank in the second circulation system. A circulator provided with a high-speed setting change device for temperature control fluid temperature in a vessel.