US20060086114A1 - Constant-temperature fluid supply system - Google Patents
Constant-temperature fluid supply system Download PDFInfo
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- US20060086114A1 US20060086114A1 US11/256,079 US25607905A US2006086114A1 US 20060086114 A1 US20060086114 A1 US 20060086114A1 US 25607905 A US25607905 A US 25607905A US 2006086114 A1 US2006086114 A1 US 2006086114A1
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- 239000012530 fluid Substances 0.000 title claims abstract description 205
- 239000012809 cooling fluid Substances 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 9
- 239000002250 absorbent Substances 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 56
- 239000000498 cooling water Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- 238000010894 electron beam technology Methods 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/021—Control thereof
- F25B2321/0212—Control thereof of electric power, current or voltage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/025—Removal of heat
- F25B2321/0252—Removal of heat by liquids or two-phase fluids
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Temperature (AREA)
Abstract
A constant-temperature fluid supply system is provided with a first constant-temperature fluid supply apparatus and a second constant-temperature fluid supply apparatus. The first constant-temperature fluid supply apparatus has an input side to which a cooling fluid not controlled in temperature is supplied, and an output side from which a first constant-temperature fluid having a stable temperature is supplied. The second constant-temperature fluid supply apparatus has an input side to which the first constant-temperature fluid is supplied, and an output side from which a second constant-temperature fluid having a more stable temperature than that of the first constant-temperature fluid is supplied.
Description
- This application is based upon and claims the benefit of priority from prior Japanese Patent Applications No. 2004-309705, filed Oct. 25, 2004; and No. 2005-299606, filed Oct. 14, 2005 the entire contents of both of which are incorporated herein by reference.
- 1. Field of the Invention
- The present invention relates to a constant-temperature fluid supply system adapted for use in a semiconductor manufacturing apparatus and configured to control the temperature of a target device with a high degree of accuracy.
- 2. Description of the Related Art
- Devices that have to be kept at constant temperatures are provided with an internal fluid passage for constant-temperature water. By circulation of the constant-temperature water supplied from constant-temperature fluid supply sources, the devices can be kept in the constant-temperature state. In other words, the temperatures of the devices can be kept at a stable value by maintaining the thermal equilibrium between the devices and the constant-temperature water. As can be seen from this, in order to stabilize the temperatures of the devices with a high degree of accuracy, it is necessary to control the temperature of the constant-temperature water with a high degree of accuracy (Jpn. UM Appln. KOKAI Publication No 5-25190).
- To control the temperature of the constant-temperature water with a high degree of accuracy, it is necessary to suppress the heat acting as external disturbances. Among the external disturbances, temperature variations of cooling water are a factor that may vary the temperature of the constant-temperature water. Normally, the water provided by the municipal water department (hereinafter referred to as tap water for the sake of simplicity) and the circulation water in plants are used as the cooling water. Those kinds of water are not controlled in temperature, and their temperatures inevitably vary. Due to the temperature variations of the cooling water, the constant-temperature water may also vary in temperature even if the setting temperature is constant.
- This problem is marked in the case of the cooling water for use in a chiller unit. The tap water and the circulation water in plants are very likely vary in temperature due to changes in the ambient temperature. In some cases, they may undergo a temperature variation of about 10° C. in a day. Since this results in a change in the temperature of the constant-temperature water, the target devices cannot be controlled with a high degree of accuracy.
- As discussed above, the conventional constant-temperature fluid supply apparatus has problems in that the temperature of the constant-temperature fluid varies due to temperature variations of the externally-provided cooling water.
- According to one aspect of the present invention, there is provided a constant-temperature fluid supply system comprising:
- a first constant-temperature fluid supply apparatus having an input side to which a cooling fluid not controlled in temperature is supplied, and an output side from which a first constant-temperature fluid having a stable temperature is supplied; and
- a second constant-temperature fluid supply apparatus having an input side to which the first constant-temperature fluid is supplied, and an output side from which a second constant-temperature fluid having a more stable temperature than that of the first constant-temperature fluid is supplied.
- According to another aspect of the present invention, there is provided a constant-temperature fluid supply system configured to keep a first portion and a second portion of an object at predetermined temperatures, the constant-temperature fluid supply system comprising:
- a first constant-temperature fluid supply apparatus having an input side to which a cooling fluid not controlled in temperature is supplied, and an output side from which a first constant-temperature fluid having a stable temperature is supplied, part of the first constant-temperature fluid being supplied to the first portion of the object; and
- a second constant-temperature fluid supply apparatus having an input side to which remaining part of the first constant-temperature fluid is supplied, and an output side from which a second constant-temperature fluid having a more stable temperature than that of the first constant-temperature fluid is supplied.
- According to still another aspect of the present invention, there is provided a constant-temperature fluid supply system configured to keep a first portion and a second portion of an object at predetermined temperatures, the constant-temperature fluid supply system comprising:
- a first constant-temperature fluid supply apparatus having an input side to which a cooling fluid not controlled in temperature is supplied, and an output side from which a first constant-temperature fluid having a stable temperature is supplied; and
- a second constant-temperature fluid supply apparatus having an input side to which the first constant-temperature fluid is supplied, and an output side from which a second constant-temperature fluid having a more stable temperature than that of the first constant-temperature fluid is supplied.
- a third constant-temperature fluid supply apparatus having an input side to which the first constant-temperature fluid is supplied, and an output side from which a third constant-temperature fluid having a more stable temperature than that of the first constant-temperature fluid is supplied to the second portion of the object.
- Additional objects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out hereinafter.
- The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention, and together with the general description given above and the detailed description of the embodiments given below, serve to explain the principles of the invention.
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FIG. 1 is a schematic diagram showing a constant-temperature fluid supply system according to the first embodiment. -
FIG. 2 shows a specific structure of the first constant-temperature fluid supply apparatus employed in the constant-temperature fluid supply system of the first embodiment. -
FIG. 3 shows a specific structure of the second constant-temperature fluid supply apparatus employed in the constant-temperature fluid supply system of the first embodiment. -
FIG. 4 shows another specific structure of the first constant-temperature fluid supply apparatus employed in the constant-temperature fluid supply system of the first embodiment. -
FIG. 5 is a schematic diagram showing a constant-temperature fluid supply system according to the second embodiment. -
FIG. 6 is a schematic diagram showing a constant-temperature fluid supply system according to the third embodiment. -
FIG. 7 shows an example of an object whose temperature is to be kept constant by the constant-temperature fluid supply systems of the second and third embodiments. -
FIG. 8 is a schematic diagram showing a constant-temperature fluid supply system according to the fourth embodiment. - The present invention will now be described in detail, referring to the embodiments shown in the accompanying drawings.
- In
FIG. 1 ,reference numeral 10 denotes a first constant-temperature fluid supply apparatus. Cooling water 101 (i.e., cooling fluid), which is tap water or circulation water in plants, is supplied to the input side of theapparatus 10. First constant-temperature water 102 (i.e., a first constant-temperature fluid) is output from the output side of theapparatus 10.Reference numeral 20 denotes a second constant-temperature fluid supply apparatus. First constant-temperature water 102 is supplied to the input side of theapparatus 20 as cooling water. Second constant-temperature water 103 (i.e., a second constant-temperature fluid) is output from the output side of theapparatus 20. The second constant-temperature water 103 is supplied to an external apparatus 30 (i.e., an apparatus whose temperature is to be kept constant), for maintaining its constant temperature. - The first and second constant-temperature
fluid supply apparatuses fluid supply apparatuses 20 and theexternal apparatus 30 are connected together by means of a flexible connection hose and can be separated, if necessary. The first constant-temperature water 102 circulates between the first and second constant-temperaturefluid supply apparatuses temperature water 103 circulates between the second constant-temperaturefluid supply apparatus 20 and theexternal apparatus 30. - The passage for the second constant-
temperature water 103, i.e., the hose between the second constant-temperaturefluid supply apparatus 20 and theexternal apparatus 30, is covered with a heat insulating material to prevent external thermal effects. Theexternal apparatus 30 is installed in a temperature-controlled room. - As shown in
FIG. 2 , the first constant-temperaturefluid supply apparatus 10 is provided with an evaporator and a condenser and utilizes heat exchange for maintaining a constant temperature. The constant-fluid supply apparatus 10 comprises acondenser 11, anevaporator 12, acompressor 13, anelectromagnetic valve 15, athermometer 16, acontroller 17 and apump 18. - The cooling
water 101 supplied to the constant-temperaturefluid supply apparatus 10 is used for cooling thecondenser 11. After being cooled and adjusted in temperature by theevaporator 12, the constant-temperature water 102 is supplied to the constant-temperaturefluid supply apparatus 20. Thethermometer 16 is in the constant-temperature water passage and located on the output side of theevaporator 12. The setting temperature of the constant-temperature water 102 is entered to thecontroller 17, and a detection temperature which thethermometer 16 detects with respect to the constant-temperature water 102 is also supplied to thecontroller 17. Based on the difference between the setting temperature and the detection temperature, thecontroller 17 controls the openings ofelectromagnetic valves evaporator 12. In this manner, the constant-temperature water 102 is kept at the setting temperature. - As shown in
FIG. 3 , the second constant-temperaturefluid supply apparatus 20 employs aPeltier element 21 for maintaining the constant temperature with a high degree of accuracy. Apassage 22 for permitting constant-temperature water 102 to flow is connected to the heat-waste side (input side) of thePeltier element 21, and apassage 23 for permitting constant-temperature water 103 to flow is connected to the heat-absorbent side (output side) of thePeltier element 21. With this structure, thePeltier element 21 is cooled by the constant-temperature water 102 having a comparatively stable temperature, and thePeltier element 21 cools the constant-temperature water 103 so that thewater 103 has a very stable temperature. - Although not illustrated, the temperature of the
water 102 on the heat-waste side of thePeltier element 21 is stable, and thewater 103 on the heat-absorbent side can be kept constant by controlling the current supply. For strict control of the constancy, atemperature sensor 24 may be provided in thepassage 23 at a position downstream of thePeltier element 21. In this case, the output of thetemperature sensor 24 is fed back to thepower supply 25 of thePeltier element 21, and the current supply to thePeltier element 21 is controlled in accordance with the temperature detected by thetemperature sensor 24. - In addition to the
temperature sensor 24 described above, another temperature sensor may be provided at the position where the external apparatus under temperature control is located. In accordance with the temperatures detected by these two temperature sensors, the current supply to thePeltier element 21 may be controlled. - In the first embodiment, the first constant-temperature
fluid supply apparatus 10 uses is either tap water or circulation water in plants as the coolingwater 101. Since this type of water undergoes a temperature variation of about 10° C., the temperature variation ofwater 102 may not be reduced to be less than 1/10° C. but can be 1/10° C. Since the first constant-temperaturefluid supply apparatus 10 keeps the temperature ofwater 102 constant to a certain extent (to be less than 1/10° C.), and thewater 102 whose temperature is controlled in this manner is used as the cooling water of the second constant-temperaturefluid supply apparatus 20. Hence, the temperature ofwater 103 can be kept constant in a fully satisfactory manner. As a result, the temperature variation ofwater 103 can be reduced to be less than 1/100° C. - In the case where the processing capacity of the first constant-temperature
fluid supply apparatus 10 was set at 400 W and 5 l/min,water 102 could be controlled to be 25° C±0.1° C. In addition to this, where the processing capacity of the second constant-temperaturefluid supply apparatus 20 was set at 100 W and 5 l/min,water 103 could be controlled to be 25° C.±0.01° C. - Even an
external apparatus 30 requiring highly accurate temperature control, such as the vacuum chamber of an electron beam exposure apparatus, can be stably kept at a constant temperature, without being adversely affected by the temperature variations of coolingwater 101. In addition to this, since the second constant-temperaturefluid supply apparatus 20 employs thePeltier element 21, it is small in size and enables very high temperature constancy. A plurality ofPeltier elements 21 may be used. In this case, different portions of theexternal apparatus 30 can be independently controlled to have different temperatures. - The first and second constant-temperature
fluid supply apparatuses fluid supply apparatuses - The first constant-temperature
fluid supply apparatus 10 may use an ordinary type of heat exchange, as shown inFIG. 4 . InFIG. 4 ,reference numeral 43 denotes a heat exchanger,reference numeral 46 denotes a thermometer,reference numeral 47 denotes a controller, andreference numeral 48 denotes a pump. In the case of the apparatus shown inFIG. 4 , thecontroller 47 controls the flow rate of coolingwater 101 in accordance with the temperature thethermometer 46 measures, and the temperature ofwater 102 can be controlled, accordingly. -
FIG. 5 is a schematic diagram showing a constant-temperature fluid supply system according to the second embodiment. InFIG. 5 , similar or corresponding structural elements are denoted by the same reference numerals as used inFIG. 1 , and a detailed description of such structural elements will be omitted herein. - The second embodiment differs from the first embodiment in that the first constant-
temperature water 102 from the first constant-temperaturefluid supply apparatus 10 is supplied to not only to the second constant-temperaturefluid supply apparatus 20 but also to anexternal apparatus 301. In other words, part of the first constant-temperature water 102 is circulated between the firstfluid supply apparatus 10 and theexternal apparatus 301. With this structure, the temperature ofexternal apparatus 301 can be kept at a constant value to a certain extent (the temperature ofexternal apparatus 301 cannot be so accurately controlled as the temperature of external apparatus 30). - It is comparatively easy to improve the cooling performance of the first constant-temperature
fluid supply apparatus 10. This is why the passage of the constant-temperature water 102 can be branched into sections connected to different apparatuses, without causing any problems.External apparatuses external apparatus 30 may be a sample chamber or an electronic lens barrel.External apparatus 301 is, for example, an apparatus portion that generates much heat but does not require highly-controlled temperature accuracy. -
FIG. 6 is a schematic diagram showing a constant-temperature fluid supply system according to the third embodiment. InFIG. 6 , similar or corresponding structural elements are denoted by the same reference numerals as used inFIG. 1 , and a detailed description of such structural elements will be omitted herein. - The third embodiment differs from the first embodiment in that second constant-temperature
fluid supply apparatuses fluid supply apparatus 20. In other words, three second constant-temperaturefluid supply apparatuses external apparatuses - In the third embodiment, the first constant-
temperature water 102 is supplied to three apparatuses, namely constant-temperaturefluid supply apparatus 20, constant-temperaturefluid supply apparatus 201 and constant-temperaturefluid supply apparatus 202. As in the first embodiment, each of the constant-temperaturefluid supply apparatuses - The second constant-
temperature water 103 supplied from the output side of constant-temperaturefluid supply apparatus 20 flows toexternal apparatus 30 and keeps this external apparatus at a constant temperature. The second constant-temperature water 104 supplied from the output side of constant-temperaturefluid supply apparatus 201 flows toexternal apparatus 301 and keeps this external apparatus at a constant temperature. The second constant-temperature water 105 supplied from the output side of constant-temperaturefluid supply apparatus 202 flows to theexternal apparatus 302 and keeps this external apparatus at a constant temperature. -
FIG. 7 is a diagram schematically showing an electron beam exposure apparatus whose temperature is to be kept constant. InFIG. 7 ,reference numeral 71 denotes a sample chamber,reference numeral 72 denotes an electronic lens barrel,reference numeral 73 denotes a Z sensor configured to detect the height level of the sample surface,reference numeral 74 denotes a deflection amplifier used for driving a deflector provided inside the electronic lens barrel, andreference numeral 75 denotes an external power supply. By using the constant-temperature fluid supply system shown inFIG. 5 or 6, the temperatures at portions of the electron beam exposure apparatus can be controlled independently of one another. - For example, the constant-
temperature water 103 which the constant-temperaturefluid supply apparatus 20 supplies to thesample chamber 71 is controlled at 25° C.±0.01° C. The constant-temperature water 104 which the constant-temperaturefluid supply apparatus 201 supplies to theelectronic lens barrel 72 andZ sensor 73 is controlled at 24° C.±0.01° C. The constant-temperature water 105 which the constant-temperaturefluid supply apparatus 202 supplies to thedeflection amplifier 74 is controlled to be in the range of 20° C. to 30° C.±0.01° C. The constant-temperature water 102 which the first constant-temperaturefluid supply apparatus 10 supplies to thepower supply 75 is controlled to be in the range of 20° C. to 30° C.±0.1° C. - The constant-temperature fluid supplied to the
electronic lens barrel 72 andZ sensor 73 is set at a temperature slightly lower than that of the constant-temperature fluid supplied to thesample chamber 71, because theelectronic lens barrel 72 andZ sensor 73 have a heat generating section. The temperature of thedifferential amplifier 74 has to be controlled with high accuracy, but the temperature itself need not limited to a specific value. The temperature of theexternal power supply 75 need not be controlled with high accuracy. Since theexternal power supply 75 merely needs to be cooled to some extent, the supply ofwater 102 is sufficient. - As described above, a plurality of constant-temperature fluid supply apparatuses are selectively used to control the temperatures of portions of an object in accordance with the heat the object portions may generate and the temperature control range the object portions may require. The use of a plurality of constant-temperature fluid supply apparatuses enables efficient temperature control.
-
FIG. 8 is a schematic diagram showing a constant-temperature fluid supply system according to the fourth embodiment. InFIG. 8 , similar or corresponding structural elements are denoted by the same reference numerals as used inFIG. 1 , and a detailed description of such structural elements will be omitted herein. - The fourth embodiment differs from the first embodiment in that the first constant-temperature
fluid supply apparatus 10 and the second constant-temperaturefluid supply apparatus 20 are connected directly to each other and are integrally assembled together. To be more specific, the first and second constant-temperature fluid supply apparatuses are fixed to thesame base 50, and the output side offluid supply apparatus 10 and the input side offluid supply apparatus 20 are coupled together. - With this structure, the fourth embodiment produces similar advantages to those of the first embodiment. In addition to this, the entire system can be small in size because the first and second constant-temperature
fluid supply apparatuses - The present invention is not limited to the embodiments described above. In the embodiments described above, the first constant-temperature fluid supply apparatus is provided with either (i) a cooling mechanism including the evaporator and condenser shown in
FIG. 2 , or (ii) a cooling mechanism including the heat exchanger shown inFIG. 4 . The present invention is not limited to these configurations and may be varied as needed. The first constant-temperature fluid supply apparatus does not require such high precision as needed by the second constant-temperature fluid supply apparatus, so that the former apparatus is preferably made of a low-cost apparatus. The second constant-temperature fluid supply apparatus employs a Peltier element, but may be of any type as long as highly accurate control is ensured. - The constant-temperature fluid is not limited to water but may be another kind of liquid. In addition, the cooling water used with the first constant-temperature fluid supply apparatus may be replaced with a gas. To be more specific, the heat-waste side of the first constant-temperature fluid supply apparatus may be cooled by the air by providing a cooling fan.
- Additional advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described herein. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.
Claims (18)
1. A constant-temperature fluid supply system comprising:
a first constant-temperature fluid supply apparatus having an input side to which a cooling fluid not controlled in temperature is supplied, and an output side from which a first constant-temperature fluid having a stable temperature is supplied; and
a second constant-temperature fluid supply apparatus having an input side to which the first constant-temperature fluid is supplied, and an output side from which a second constant-temperature fluid having a more stable temperature than that of the first constant-temperature fluid is supplied.
2. The constant-temperature fluid supply system according to claim 1 , wherein the first constant-temperature fluid supply apparatus comprises a cooling mechanism including an evaporator and a condenser, the cooling fluid and the first constant-temperature fluid exchange heat, the input side of the first constant-temperature fluid is a heat-waste side where a passage of the cooling fluid is formed, and the output side of the first constant-temperature fluid is a cooling side where a passage of the first constant-temperature fluid is formed.
3. The constant-temperature fluid supply system according to claim 1 , wherein the second constant-temperature fluid supply apparatus includes a Peltier element having input and output sides, the input side of the Peltier element is a heat-waste side where a passage of the first constant-temperature fluid is formed, and the output side of the Peltier element is a heat-absorbent side where a passage of the second constant-temperature fluid is formed.
4. The constant-temperature fluid supply system according to claim 3 , wherein the second constant-temperature fluid supply apparatus further includes at least one Peltier element in addition to said Peltier element, and the second constant-temperature fluid supply apparatus supplies second constant-temperature fluids of different temperatures.
5. The constant-temperature fluid supply system according to claim 1 , wherein the first constant-temperature fluid is controlled such that the temperature thereof is ±0.1° C. of a setting temperature, and the second constant-temperature fluid is controlled such that the temperature thereof is ±0.01° C. of a setting temperature.
6. The constant-temperature fluid supply system according to claim 1 , wherein the second constant-temperature fluid is supplied to an object whose temperature is to be controlled, and a passage between the second constant-temperature fluid supply apparatus and the object is thermally insulated by a heat insulator.
7. A constant-temperature fluid supply system configured to keep a first portion and a second portion of an object at predetermined temperatures, said constant-temperature fluid supply system comprising:
a first constant-temperature fluid supply apparatus having an input side to which a cooling fluid not controlled in temperature is supplied, and an output side from which a first constant-temperature fluid having a stable temperature is supplied, part of the first constant-temperature fluid being supplied to the first portion of the object; and
a second constant-temperature fluid supply apparatus having an input side to which remaining part of the first constant-temperature fluid is supplied, and an output side from which a second constant-temperature fluid having a more stable temperature than that of the first constant-temperature fluid is supplied.
8. The constant-temperature fluid supply system according to claim 7 , wherein the first constant-temperature fluid supply apparatus comprises a cooling mechanism including an evaporator and a condenser, the cooling fluid and the first constant-temperature fluid exchange heat, the input side of the first constant-temperature fluid is a heat-waste side where a passage of the cooling fluid is formed, and the output side of the first constant-temperature fluid is a cooling side where a passage of the first constant-temperature fluid is formed.
9. The constant-temperature fluid supply system according to claim 7 , wherein the second constant-temperature fluid supply apparatus includes a Peltier element having input and output sides, the input side of the Peltier element is a heat-waste side where a passage of the first constant-temperature fluid is formed, and the output side of the Peltier element is a heat-absorbent side where a passage of the second constant-temperature fluid is formed.
10. The constant-temperature fluid supply system according to claim 9 , wherein the second constant-temperature fluid supply apparatus further includes at least one Peltier element in addition to said Peltier element, and the second constant-temperature fluid supply apparatus supplies second constant-temperature fluids of different temperatures.
11. The constant-temperature fluid supply system according to claim 7 , wherein the first constant-temperature fluid is controlled such that the temperature thereof is ±0.1° C. of a setting temperature, and the second constant-temperature fluid is controlled such that the temperature thereof is ±0.01° C. of a setting temperature.
12. The constant-temperature fluid supply system according to claim 7 , wherein a passage between the second constant-temperature fluid supply apparatus and the object is thermally insulated by a heat insulator.
13. A constant-temperature fluid supply system configured to keep a first portion and a second portion of an object at predetermined temperatures, said constant-temperature fluid supply system comprising:
a first constant-temperature fluid supply apparatus having an input side to which a cooling fluid not controlled in temperature is supplied, and an output side from which a first constant-temperature fluid having a stable temperature is supplied; and
a second constant-temperature fluid supply apparatus having an input side to which the first constant-temperature fluid is supplied, and an output side from which a second constant-temperature fluid having a more stable temperature than that of the first constant-temperature fluid is supplied.
a third constant-temperature fluid supply apparatus having an input side to which the first constant-temperature fluid is supplied, and an output side from which a third constant-temperature fluid having a more stable temperature than that of the first constant-temperature fluid is supplied to the second portion of the object.
14. The constant-temperature fluid supply system according to claim 13 , wherein the second constant-temperature fluid supplied from the second fluid constant-temperature fluid supply apparatus and the third constant-temperature fluid supplied from the third constant-temperature fluid supply apparatus are set at different temperatures.
15. The constant-temperature fluid supply system according to claim 13 , wherein the first constant-temperature fluid supply apparatus comprises a cooling mechanism including an evaporator and a condenser, the cooling fluid and the first constant-temperature fluid exchange heat, the input side of the first constant-temperature fluid is a heat-waste side where a passage of the cooling fluid is formed, and the output side of the first constant-temperature fluid is a cooling side where a passage of the first constant-temperature fluid is formed.
16. The constant-temperature fluid supply system according to claim 13 , wherein each of the second and third constant-temperature fluid supply apparatuses includes a Peltier element having input and output sides, the input side of the Peltier element is a heat-waste side where a passage of the first constant-temperature fluid is formed, and the output side of the Peltier element is a heat-absorbent side where a passage of the second constant-temperature fluid is formed.
17. The constant-temperature fluid supply system according to claim 13 , wherein the first constant-temperature fluid is controlled such that the temperature thereof is ±0.1° C. of a setting temperature, and the second and third constant-temperature fluids are controlled such that the temperatures thereof are ±0.01° C. of setting temperatures.
18. The constant-temperature fluid supply system according to claim 13 , wherein a passage between the second constant-temperature fluid supply apparatus and the object and a passage between the third constant-temperature fluid supply apparatus and the object are thermally insulated by a heat insulator.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2004-309705 | 2004-10-25 | ||
JP2004309705 | 2004-10-25 | ||
JP2005299606A JP2006153429A (en) | 2004-10-25 | 2005-10-14 | Constant-temperature fluid supply system |
JP2005-299606 | 2005-10-14 |
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US20060086114A1 true US20060086114A1 (en) | 2006-04-27 |
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US11/256,079 Abandoned US20060086114A1 (en) | 2004-10-25 | 2005-10-24 | Constant-temperature fluid supply system |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2430730A (en) * | 2005-09-30 | 2007-04-04 | Smc Corp | Water cooled constant temperature liquid circulating device |
US20080006044A1 (en) * | 2006-07-10 | 2008-01-10 | Ziming Tan | Method for controlling temperature |
CN103673390A (en) * | 2012-09-18 | 2014-03-26 | F·波尔希名誉工学博士公司 | Thermoelectric heat pump |
US20160216024A1 (en) * | 2013-11-13 | 2016-07-28 | Mitsubishi Heavy Industries, Ltd. | Heat source machine and control method therefor |
US11255573B2 (en) | 2011-12-28 | 2022-02-22 | Desert Aire Corp. | Air conditioning apparatus for efficient supply air temperature control |
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US9134053B2 (en) * | 2011-08-23 | 2015-09-15 | B/E Aerospace, Inc. | Vehicle refrigerator having a liquid line subcooled vapor cycle system |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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GB2430730A (en) * | 2005-09-30 | 2007-04-04 | Smc Corp | Water cooled constant temperature liquid circulating device |
US20070074864A1 (en) * | 2005-09-30 | 2007-04-05 | Smc Corporation | Water-cooled constant temperature liquid circulating device and method of controlling temperature of circulating liquid with the same |
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US11255573B2 (en) | 2011-12-28 | 2022-02-22 | Desert Aire Corp. | Air conditioning apparatus for efficient supply air temperature control |
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US20160216024A1 (en) * | 2013-11-13 | 2016-07-28 | Mitsubishi Heavy Industries, Ltd. | Heat source machine and control method therefor |
US10174986B2 (en) * | 2013-11-13 | 2019-01-08 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Heat source machine and control method therefor |
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