TWI762426B - Cold water circulation system - Google Patents

Abstract

The present invention provides a cold water circulation system, which connects a cooling device group including a first cooling device with a first pipeline and a second pipeline to a heat exchange device, and connects a heating device with a third pipeline and A fourth pipeline is communicated with the heat exchange device, and a shunt chamber is set up by using the fourth pipeline, and a fifth pipeline is connected to the cooling device group including a second cooling device, and the second cooling device is A sixth pipeline is connected to a mixing chamber set in the fourth pipeline, and a first control valve set in the first pipeline and a second control valve set in the fifth pipeline are used to adjust the cooling device accordingly The cold fluid of the group is circulated, so that the cold fluid of different temperatures can be circulated and mixed in the system.

Description

Cold water circulation system

The present invention relates to a cold water circulation system, especially a circulation system for cooling and heating circulation, and supplying multi-temperature cooling fluid to improve the power efficiency of the system.

With the development of the times, the industry has gradually set up facilities in factories to supply the corresponding environment of its manufacturing equipment, which is called a factory system; taking the semiconductor industry as an example, its factory system usually includes: clean room related systems, air conditioning systems, Pure water system, gas supply system, chemical supply system, power system; the most important thing for the first clean room related system is to provide a clean production environment, and the purpose of the second air conditioning system is to provide a stable air conditioning environment for the whole plant , the purpose of the third pure water system is to supply the cleaning related process needs, the purpose of the fourth gas supply system is to provide high-quality bulk gas and safe special gas, and the purpose of the fifth chemical supply system is to provide bulk gas Using high-quality chemicals, the purpose of the sixth power system is to supply a stable power supply for the entire site; and the factory system requires two functions, which are to provide heat and cold sources.

For the heat source supply, boilers are often used in the industry to supply hot water by means of heating. The load of hot water demand in factories is usually: clean room air conditioning unit (MAU) and pure water system.

At the same time, there are many heat sources in the factory that need to be cooled, so it is necessary to provide a cold source. The industry usually uses process cooling water to mainly supply the production equipment PCW (PROCESS COOLING WATER), which is used to manufacture cooling water. The system, and It is required that the temperature of the fluid provided should not be too low, and the temperature is usually controlled at 16°C ~ 22°C. If the temperature of the fluid is too low, in the case of high humidity in factories and clean rooms, condensation on the surface of the pipeline will occur. Damage the equipment. If the temperature of the fluid is too high, the cooling requirements of the equipment cannot be achieved; and the fluid usually uses pure water or soft water as the water source.

The conventional cold water circulation system of the factory mainly uses the refrigeration system based on the principle of the vapor compression cycle as the refrigeration source to cool the high temperature fluid in the cold water circulation to the low temperature fluid in the evaporator of the refrigeration system, but the conventional cold water In the operation of the circulation system, the fluid temperature of the cold water circulation will be reduced as much as possible to meet all the cooling needs in the factory; but according to the thermodynamic analysis, under the condition that the condensation temperature of the refrigeration system remains unchanged, the higher the evaporation temperature, the higher the efficiency of the refrigeration system. That is to say, increasing the temperature of the fluid in the cold water circulation helps to improve the efficiency of the refrigeration system. Therefore, the conventional operation method of the cold water circulation system of the factory to reduce the temperature of the fluid as much as possible is inefficient, which will increase the operating cost of the factory.

In view of the above-mentioned problems of the prior art, the present invention provides a cold water circulation system, which connects part of the cooling devices of the cooling device group to the heat exchange device, another part of the cooling device of the cooling device group is connected to the heating device, and the heat exchange device and the heating device are connected. The devices are connected to each other, and the fluids of the cooling device group, the heating device and the heat exchange device are mixed and circulated to adjust the cold fluid of various temperatures required, and circulate in the system.

An object of the present invention is to provide a cold water circulation system, in which part of the cooling devices of the cooling device group is connected to the heat exchange device, another part of the cooling device of the cooling device group is connected to the heating device, and the heat exchange device and the heating device are communicated with each other, by The fluids of the cooling device group, the heating device and the heat exchange device are mixed and circulated to adjust the cold fluid of various temperatures required, and circulate in the system, in addition to stably regulating the temperature of the cooling fluid, and improving the electricity efficiency of the cold water circulation system.

In order to achieve the above-mentioned objects and effects, the present invention provides a cold water circulation system, which includes: a cooling device group, a heat exchange device and a heating device, and the cooling device group includes a first cooling device and a second cooling device. A cooling device, the first cooling device is arranged on one side of the second cooling device, the heat exchange device is communicated with the first cooling device by a first pipeline and a second pipeline, and the first pipeline is provided with a first cooling device. a control valve, the heating device communicates with the heat exchange device through a third pipeline and a fourth pipeline, the fourth pipeline is provided with a mixing chamber and a shunt chamber, and the mixing chamber is connected with a sixth pipe The second cooling device is communicated with the second cooling device, and the shunt chamber is arranged between the mixing chamber and the heating device. The shunt chamber is connected to the second cooling device by a fifth pipeline, and a first Two control valves; wherein, by controlling the flow of fluid into the heat exchange device through the first pipeline and the first control valve, and by controlling the flow through the fifth pipeline and the second control valve to the second cooling device The fluid flow makes the heating device reach a preset temperature; this structure is used to provide a cold water circulation system, so that cold fluids of different temperatures can be circulated and mixed in the system.

In an embodiment of the present invention, a first temperature sensing element is disposed inside an inner side of the third pipeline.

In an embodiment of the present invention, a second temperature sensing element is disposed inside an inner side of the fourth pipeline.

In an embodiment of the present invention, a control element is further included, and the control element is electrically connected to the first control valve, the second control valve, the first temperature sensing element and the second temperature sensing element. The control element The element receives a first temperature signal of the first temperature sensing element to control the switch of the first control valve, and the control element receives a second temperature signal of the second temperature sensing element to control the second control valve switch.

In an embodiment of the present invention, a first circulating pump is disposed inside one of the first pipelines.

In an embodiment of the present invention, a second circulating pump is disposed between the mixing chamber and the heat exchange device on an inner side of the fourth pipeline.

In an embodiment of the present invention, a third circulating pump is disposed inside one of the fifth pipelines.

In an embodiment of the present invention, it further includes a seventh pipeline, one end of the seventh pipeline is connected to the first pipeline, the other end of the seventh pipeline is connected to the sixth pipeline, and the seventh pipeline A third control valve is provided.

In an embodiment of the present invention, an eighth pipeline is further included, one end of the eighth pipeline is connected to the second pipeline, the other end of the eighth pipeline is connected to the fifth pipeline, and the eighth pipeline A fourth control valve is provided.

In an embodiment of the present invention, it further includes a ninth pipeline and a tenth pipeline, one end of the ninth pipeline is connected to the first pipeline, and the other end of the ninth pipeline is connected to the second pipeline , one end of the tenth pipeline is connected to the fifth pipeline, and the other end of the tenth pipeline is connected to the sixth pipeline.

In order to make your examiners have a further understanding and understanding of the features of the present invention and the effects achieved, I would like to assist with the examples and cooperation descriptions, and the descriptions are as follows:

In view of the above-mentioned problems of the prior art, the present invention provides that a part of the cooling device of the cooling device group is connected to the heat exchange device, another part of the cooling device of the cooling device group is connected to the heating device, and the heat exchange device and the heating device are communicated with each other. The fluids of the cooling device group, the heating device and the heat exchange device are mixed and circulated to adjust the cooling fluid of various required temperatures, which solves the problem that the conventional technology needs to consume a lot of energy to adjust the temperature of the cooling fluid.

Please refer to FIG. 1, which is a schematic diagram of a circulation system according to an embodiment of the present invention. As shown in the figure, in this embodiment, a cold water circulation system 1 includes a cooling device group 10, a heat exchange device 20 and a heating device The device 30 and the fluid flows in the devices 10 , 20 and 30 for heat exchange and circulation; in this embodiment, the fluid can be water, but it is not intended to limit the present invention.

Referring to FIG. 1 again, as shown in the figure, in this embodiment, the cooling device group 10 includes a first cooling device 12 and a second cooling device 14, and the first cooling device 12 is disposed in the second cooling device 12. On one side of the cooling device 14 , the number of cooling devices in the cooling device group 10 may be plural and divided into two groups. In this embodiment, the first cooling device 12 and the second cooling device 14 are used as examples, and are not intended to limit the present invention. Invention: the heat exchange device 20 communicates with the first cooling device 12 by a first pipeline 22 to receive cold fluid, the heat exchange device 20 communicates with the first cooling device 12 by a second pipeline 24 to deliver hot fluid, The first pipeline 22 is provided with a first control valve 222 , and the opening and closing of the first control valve 222 controls the fluid flow through the heat exchange device 20 ; the first control valve 222 can also be provided in the second pipeline 24 , the resulting functions are exactly the same; the heating device 30 communicates with the heat exchange device 20 through a third pipeline 32 to receive cold fluid, and the heating device 30 communicates with the heat exchange device 20 through a fourth pipeline 34 to transport Hot fluid, the fourth line 34 is provided with a mixing chamber 342 and a shunt chamber 348, the mixing chamber 342 communicates with the second cooling device 14 through a sixth line 38 to receive cold fluid, the shunt chamber The chamber 348 is disposed between the mixing chamber 342 and the heating device 30 , and the shunt chamber 348 communicates with the second cooling device 14 through a fifth pipeline 36 , and the shunt chamber 348 connects the fourth pipeline 34 The fluid is diverted to the fifth pipeline 36 and its flow is controlled. The fifth pipeline 36 is provided with a second control valve 362 , and the switch of the second control valve 362 controls the fluid flow through the second cooling device 14 ; The second control valve 362 can also be arranged in the sixth pipeline 38, resulting in the same function; in this embodiment, the first and second cooling devices 12, 14 are equipment for cooling the fluid, such as a refrigerator The heat exchange device 20 is used for exchanging the heat energy of the fluid, such as copper pipes for heat conduction; the heating device 30 is a heat source that generates heat, such as processing machines, air compressors, and conveying equipment in factories.

Continuing the above, as shown in the figure, in this embodiment, the first cooling device 12 cools the fluid to form a first cold fluid C1, and the first cold fluid C1 flows in the first pipeline 22 to the The heat exchange device 20, the first cold fluid C1 is heated in the heat exchange device 20 to form a first hot fluid H1, the first hot fluid H1 flows to the first cooling device 12 in the second pipeline 24, For cooling, the heat exchange device 20 cools the fluid to form a second cold fluid C2, the second cold fluid C2 flows to the heating device 30 in the third pipeline 32, and the second cold fluid C2 absorbs the The heat energy of the heating device 30 makes the heating device 30 reach a preset temperature to form a second thermal fluid H2, and the second thermal fluid H2 flows to the shunt chamber 348 in the fourth pipeline 34, and the shunt chamber 348 The chamber 348 divides the second thermal fluid H2 into a third thermal fluid H3 and a fourth thermal fluid H4 , and the fourth thermal fluid H4 flows to the mixing chamber 342 in the fourth pipeline 34 for fluid mixing to form A third cold fluid C3, the third cold fluid C3 enters the fourth pipeline 34 from the mixing chamber 342, and flows to the heat exchange device 20 for further heat exchange with the first cold fluid C1, and the first cold fluid C1 The three hot fluids H3 flow in the fifth pipeline 36 to the second cooling device 14 for cooling to form a fourth cold fluid C4 , and the fourth cold fluid C4 flows to the mixing chamber in the sixth pipeline 38 The chamber 342 is mixed with the fourth hot fluid H4 to form the third cold fluid C3 to complete a cycle; in this embodiment, the temperature of the first cold fluid C1 is lower than the temperature of the fourth cold fluid C4, so The electrical efficiency of the second cooling device 14 is higher than that of the first cooling device 12 .

Please refer to FIG. 2 , which is a schematic diagram of a circulation system and a temperature sensing element according to an embodiment of the present invention. As shown in the figure, in this embodiment, a first temperature is further set on an inner side of the third pipeline 32 The sensing element 322, and a second temperature sensing element 344 is disposed inside one of the fourth pipeline 34, the first temperature sensing element 322 senses the temperature of the second cold fluid C2, and the second temperature sensing The element 344 senses the temperature of the third cold fluid C3, the second cold fluid C2 is the same as the preset temperature of the third cold fluid C3; when the temperature of the third cold fluid C3 is lower than the preset temperature, the The opening of the second control valve 362 is narrowed, so that the flow rate of the fourth cold fluid C4 entering the mixing chamber 342 is reduced, thereby increasing the temperature of the third cold fluid C3 to reach a preset temperature, and the third cold fluid C3 continues to circulate The second cold fluid C2 is formed. At this time, the temperature of the second cold fluid C2 is equal to the temperature of the third cold fluid C3, which are both preset temperatures. Therefore, the first control valve 222 is closed to make the first cooling device 12 The fluid with the heat exchange device 20 stops flowing, at this time the first cooling device 12 can stop running, the third cold fluid C3 continues to circulate to form the second cold fluid C2 and flows to the heating device 30; and when When the temperature of the third cold fluid C3 is higher than a preset temperature, the opening of the second control valve 362 is widened, so that the flow rate of the fourth cold fluid C4 entering the mixing chamber 342 increases, thereby reducing the third cold fluid C3 The temperature of the third cold fluid C3 reaches the preset temperature, and the third cold fluid C3 continues to circulate to form the second cold fluid C2. At this time, the temperature of the second cold fluid C2 is equal to the temperature of the third cold fluid C3, both of which are the preset temperature. , so the first control valve 222 is closed, so that the fluid between the first cooling device 12 and the heat exchange device 20 stops flowing, at this time the first cooling device 12 can stop running, and the third cooling fluid C3 continues to circulate, The second cold fluid C2 is formed and flows to the heating device 30; and when the temperature of the third cold fluid C3 is higher than the preset temperature, and the opening of the second control valve 362 is fully opened, the The temperature of the third cold fluid C3 reaches a preset temperature, and the third cold fluid C3 continues to circulate to form the second cold fluid C2. At this time, the temperature of the second cold fluid C2 is higher than the preset temperature, so the first control valve 222 Turn on, so that the fluid between the first cooling device 12 and the heat exchange device 20 starts to flow, and the first cooling device 12 starts to supply the first cold fluid C1 to the heat exchange device 20 and the third cold fluid. C3 is heat exchanged to form the second cold fluid C2 and flow to the heating device 30; the above description shows that the first cooling device 12 only when the cooling capacity of the second cooling device 14 cannot meet the cooling requirements of the third fluid C3, the first cooling device 12 Therefore, the usage amount of the first cooling fluid C1 can be reduced, so as to save the energy consumption of the first cooling device 12 and improve the electricity efficiency of the whole cold water circulation system.

Please refer to Fig. 3 and Fig. 4, Fig. 3 is a schematic diagram of a circulating pump according to an embodiment of the present invention, and Fig. 4 is a schematic diagram of the electrical connection of the control element according to an embodiment of the present invention. As shown in Fig. 3, this embodiment The example further discloses that a first circulating pump 224 is disposed inside one of the first pipeline 22, a second circulating pump 346 is disposed inside one of the fourth pipeline 34, and further the second circulating pump 346 is disposed in the mixing chamber Between 342 and the heat exchange device 20, a third circulation pump 364 is arranged inside one of the fifth pipeline 36, and the first circulation pump 224 is used to circulate the first cold fluid C1 and the first hot fluid H1, The second circulating pump 346 and the third circulating pump 364 are used to circulate the second cold fluid C2, the third cold fluid C3, the fourth cold fluid C4, the second hot fluid H2, and the third hot fluid H3 and the fourth thermal fluid H4; as shown in FIG. 4, this embodiment further includes a control element 40, the control element 40 is electrically connected to the first control valve 222, the second control valve 362, the first temperature The sensing element 322 and the second temperature sensing element 344, the control element 40 receives a first temperature signal 323 of the first temperature sensing element 322, and the control element 40 transmits a first control signal 42 to the first temperature sensing element 322 The control valve 222 is used to control the opening and closing of the first control valve 222 , the control element 40 receives a second temperature signal 345 from the second temperature sensing element 344 , and the control element 40 transmits a second control signal 44 to the second control valve 362 to control the opening and closing of the second control valve 362 .

In a cold water circulation system 1 of the present embodiment, the first cooling device 12 included in the cooling device group 10 communicates with the heat exchange device 20 to provide a lower temperature cooling fluid, and the second cooling device included in the cooling device group 10 is used. The device 14 communicates with the mixing chamber 342 to provide a higher temperature cooling fluid to the heating device 30, through the fluid circulation of the second cooling device 14, the heating device 30 and the heat exchange device 20 to adjust the appropriate temperature. The cold fluid circulates the cold and heat in the system, further reducing the energy consumption of the cooling device group 10 .

Please refer to FIG. 5 , which is a schematic diagram of a circulation system according to another embodiment of the present invention. As shown in the figure, this embodiment is based on the above-mentioned embodiment, and further discloses that a fourth pipe 24 is disposed inside one of the second pipes 24 . The circulating pump 226 includes a seventh pipeline 16 , an eighth pipeline 18 , a ninth pipeline 26 and a tenth pipeline 39 , one end of the seventh pipeline 16 is connected to the first pipeline 22 , The other end of the seventh pipeline 16 is connected to the sixth pipeline 38 , the seventh pipeline 16 is provided with a third control valve 162 , one end of the eighth pipeline 18 is connected to the second pipeline 24 , and the eighth pipeline 16 is connected to the second pipeline 24 . The other end of the pipeline 18 is connected to the fifth pipeline 36 , the eighth pipeline 18 is provided with a fourth control valve 182 , and the seventh pipeline 16 utilizes the switch of the third control valve 162 to control the first cold fluid C1 is introduced into the sixth pipe 38 to further reduce the temperature of the fourth cold fluid C4. The eighth pipe 18 uses the switch of the fourth control valve 182 to introduce the third hot fluid H3 into the second pipe Road 24, the first cooling device 12 with higher cooling efficiency is used to cool down the third thermal fluid H3, one end of the ninth pipeline 26 is connected to the first pipeline 22, and the other end of the ninth pipeline is connected to the first pipeline 22. Two pipelines 24, one end of the tenth pipeline 39 is connected to the fifth pipeline 36, the other end of the tenth pipeline 39 is connected to the sixth pipeline 38, the ninth pipeline 26 and the tenth pipeline Path 39 enables the fluid in this embodiment to circulate more elastically. For example, if the output flow of the first circulation pump 224 is reduced due to variable frequency operation, so that the output flow of the first circulation pump 224 is smaller than the output flow of the fourth circulation pump 226, the ninth pipe The channel 26 can lead the part of the first cold fluid C1 to the second pipeline 24 ; the structures and operation relationships of other components in this embodiment are the same as those in the above-mentioned embodiment, so they will not be repeated.

To sum up, the present invention provides a cold water circulation system, which connects part of the cooling device of the cooling device group to the heat exchange device, another part of the cooling device of the cooling device group is connected to the heating device, the heat exchange device and the heating device are communicated with each other, and the cooling device Another part of the cooling device of the device group directly cools the fluid of the heating device, and exchanges heat with the fluid of the heat exchange device to adjust the cold fluid of the required temperature, so that the system architecture can provide higher temperature cold water while improving the system. The high power consumption efficiency solves the problem that the conventional cold water circulation system needs to consume a lot of energy when adjusting the temperature of the cooling fluid, which increases the operating cost of the factory.

Therefore, the present invention is indeed novel, progressive and available for industrial use, and it should meet the requirements of patent application in my country's patent law.

However, the above is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, all the equivalent changes and modifications made in accordance with the shape, structure, feature and spirit described in the scope of the patent application of the present invention, All should be included in the scope of the patent application of the present invention.

1: cold water circulation system 10: Cooling device group 12: The first cooling device 14: Second cooling device 16: Seventh pipeline 162: The third control valve 18: Eighth pipeline 182: Fourth control valve 20: heat exchange device 22: The first pipeline 222: First control valve 224: First circulating pump 226: Fourth Circulation Pump 24: Second pipeline 26: Ninth pipeline 30: heating device 32: The third pipeline 322: the first temperature sensing element 323: The first temperature signal 34: Fourth pipeline 342: Mixing Chamber 344: Second temperature sensing element 345: The second temperature signal 346: Second circulating pump 348: Shunt Chamber 36: Fifth pipeline 362: Second control valve 364: Third Circulation Pump 38: Sixth pipeline 39: Tenth pipeline 40: Control elements 42: The first control signal 44: The second control signal C1: First cold fluid C2: Second cold fluid C3: Third cold fluid C4: Fourth cold fluid H1: The first thermal fluid H2: Second thermal fluid H3: The third thermal fluid H4: Fourth thermal fluid

Figure 1: It is a schematic diagram of a circulation system according to an embodiment of the present invention; Figure 2: It is a schematic diagram of a circulation system and a temperature sensing element according to an embodiment of the present invention; Figure 3: It is a schematic diagram of a circulating pump according to an embodiment of the present invention; FIG. 4 is a schematic diagram of the electrical connection of the control element according to the embodiment of the present invention; and Fig. 5 is a schematic diagram of a circulation system according to another embodiment of the present invention.

1: cold water circulation system

10: Cooling device group

12: The first cooling device

14: Second cooling device

20: heat exchange device

22: The first pipeline

222: First control valve

24: Second pipeline

30: heating device

32: The third pipeline

34: Fourth pipeline

342: Mixing Chamber

348: Shunt Chamber

36: Fifth pipeline

362: Second control valve

38: Sixth pipeline

C1: First cold fluid

C2: Second cold fluid

C3: Third cold fluid

C4: Fourth cold fluid

H1: The first thermal fluid

H2: Second thermal fluid

H3: The third thermal fluid

H4: Fourth thermal fluid

Claims (10)

A cold water circulation system comprising: a cooling device group, which includes a first cooling device and a second cooling device, the first cooling device is disposed on one side of the second cooling device; a heat exchange device, which communicates with the first cooling device through a first pipeline and a second pipeline, and the first pipeline is provided with a first control valve; and a heating device, which communicates with the heat exchange device through a third pipeline and a fourth pipeline, the fourth pipeline is provided with a mixing chamber and a shunt chamber, and the mixing chamber is connected with a sixth pipeline In the second cooling device, the shunt chamber is arranged between the mixing chamber and the heating device, the shunt chamber is connected to the second cooling device through a fifth pipeline, and a second control device is arranged in the fifth pipeline valve; Wherein, by controlling the fluid flow into the heat exchange device through the first pipeline and the first control valve, and controlling the fluid flow through the fifth pipeline and the second control valve to the second cooling device, so that The heating device reaches a preset temperature. The cold water circulation system according to claim 1, wherein a first temperature sensing element is disposed inside one of the third pipeline. The cold water circulation system according to claim 2, wherein a second temperature sensing element is disposed inside one of the fourth pipelines. The cold water circulation system of claim 3, further comprising a control element electrically connected to the first control valve, the second control valve, the first temperature sensing element and the second temperature sensing element , the control element receives a first temperature signal of the first temperature sensing element to control the switch of the first control valve, the control element receives a second temperature signal of the second temperature sensing element to control the The switch of the second control valve. The cold water circulation system according to claim 1, wherein a first circulation pump is arranged inside one of the first pipelines. The cold water circulation system as claimed in claim 1, wherein a second circulation pump is arranged inside one of the fourth pipelines. The cold water circulation system as claimed in claim 1, wherein a third circulation pump is arranged inside one of the fifth pipelines. The cold water circulation system as claimed in claim 1, further comprising a seventh pipeline, one end of the seventh pipeline is connected to the first pipeline, the other end of the seventh pipeline is connected to the sixth pipeline, and the first pipeline is connected to the sixth pipeline. Seven pipelines are provided with a third control valve. The cold water circulation system according to claim 1, further comprising an eighth pipeline, one end of the eighth pipeline is connected to the second pipeline, the other end of the eighth pipeline is connected to the fifth pipeline, and the first pipeline is connected to the fifth pipeline. Eight pipelines are provided with a fourth control valve. The cold water circulation system of claim 1, further comprising a ninth pipeline and a tenth pipeline, one end of the ninth pipeline is connected to the first pipeline, and the other end of the ninth pipeline is connected to the first pipeline Two pipelines, one end of the tenth pipeline is connected to the fifth pipeline, and the other end of the tenth pipeline is connected to the sixth pipeline.

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