U.S. patent application number 16/554625 was filed with the patent office on 2021-03-04 for water cooling system for providing water with constant temperature.
The applicant listed for this patent is YUNG-CHENG CHUANG, YUNG-YU CHUANG, CHENG-WEI LIN. Invention is credited to YUNG-CHENG CHUANG, YUNG-YU CHUANG, CHENG-WEI LIN.
Application Number | 20210063102 16/554625 |
Document ID | / |
Family ID | 1000005399711 |
Filed Date | 2021-03-04 |
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United States Patent
Application |
20210063102 |
Kind Code |
A1 |
CHUANG; YUNG-YU ; et
al. |
March 4, 2021 |
WATER COOLING SYSTEM FOR PROVIDING WATER WITH CONSTANT
TEMPERATURE
Abstract
A water cooling system includes a temperature control device
which is connected with a first heat exchanger. A second heat
exchanger includes a water temperature control path and a constant
temperature water path. The water of the first heat exchanger is
controlled by the temperature control device and flows to the water
temperature control path. The water in the constant temperature
water path tows through the second heat exchanger to proceed heat
exchange with the water in the water temperature control path, and
then flows to the target equipment. The temperature difference of
the water flowing to the target equipment is smaller than that of
conventional water cooling system.
Inventors: |
CHUANG; YUNG-YU; (Taichung
City, TW) ; CHUANG; YUNG-CHENG; (Taichung City,
TW) ; LIN; CHENG-WEI; (Taichung City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CHUANG; YUNG-YU
CHUANG; YUNG-CHENG
LIN; CHENG-WEI |
Taichung City
Taichung City
Taichung City |
|
TW
TW
TW |
|
|
Family ID: |
1000005399711 |
Appl. No.: |
16/554625 |
Filed: |
August 29, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F28F 27/02 20130101 |
International
Class: |
F28F 27/02 20060101
F28F027/02 |
Claims
1. A water cooling system comprising: a temperature controller; a
first heat exchanger having a hot water path, a refrigerant path
and an even temperature water path, two ends of the hot water path
respectively connected to the temperature controller, two ends of
the refrigerant path respectively connected to the temperature
controller, the even temperature water path including an even
temperature water outlet and an even temperature water inlet; a
first tank; a first pump connected between the first tank and the
even temperature water inlet; a second heat exchanger including a
water temperature control path and a constant temperature water
path, the water temperature control path including a first inlet
and a first outlet, the first inlet connected to the even
temperature water outlet, the first outlet connected to the first
tank, the constant temperature water path including a constant
temperature water outlet and a constant temperature water inlet; a
second tank; a target equipment connected between the constant
temperature water outlet and the second tank; a second pump
connected between the second tank and the constant temperature
water inlet; wherein the temperature controller controls
temperature of the refrigerant path and the even temperature water
path, water in the even temperature water path reaches a pre-set
temperature via the first heat exchanger, the hot water path and
the refrigerant path, water in the even temperature water path
flows through the water temperature control path and enters into
the first tank, the first pump pumps the water in first the tank to
the even temperature water path to form a circulation, the second
pump pumps water in the second tank to the constant temperature
water path, the water in the constant temperature water path flows
through the second heat exchanger to proceed heat exchange with the
water in the water temperature control path so that the water from
the constant temperature water path keeps the pre-set temperature
and flows to the target equipment, water in the target equipment
flows back to the second tank.
2. The water cooling system as claimed in claim 1, wherein a switch
is connected between the constant temperature water inlet and the
second pump, the switch checks water flowing through the switch and
sends a signal to the temperature controller to confirm that the
second pump pumps water to the constant temperature water path.
3. The water cooling system as claimed in claim 1, wherein a
release valve is connected between the second pump and the second
tank to form a release path, when the second pump pumps the water
in the second tank to the constant temperature water path, a
portion of the water pumped by the second pump flows back to the
second tank by the release valve so as to control water pressure of
the water from the second pump to the constant temperature water
path.
4. The water cooling system as claimed in claim 2, wherein a
release valve is connected between the second pump and the second
tank to form a release path, when the second pump pumps the water
in the second tank to the constant temperature water path, a
portion of the water pumped by the second pump flows back to the
second tank by the release valve, another portion of the water
pumped by the second pump flows to the switch so as to control
water pressure of the water from the second pump to the constant
temperature water path.
5. The water cooling system as claimed in claim 1 further
comprising a three-way valve and a check valve, the three-way valve
including a valve inlet, a valve first outlet and a valve second
outlet, the valve inlet connected with the even temperature water
outlet, the valve first outlet connected with the first inlet of
the water temperature control path, the valve second outlet
connected with the first tank, the check valve including an
entrance and an exit, the entrance connected with the first outlet
of the water temperature control path, the exit connected with the
first tank, the three-way valve controlling water volume from the
even temperature water outlet to the first inlet of the water
temperature control path, the three-way valve controlling water
volume from the valve second outlet to the first tank so that water
cannot flows from the exit to the entrance of the check valve.
6. The water cooling system as claimed in claim 5, wherein the
second heat exchanger includes a reservoir which is filled with a
heat-conductive agent and vacuumed.
Description
BACKGROUND OF THE INVENTION
1. Fields of the Invention
[0001] The present invention relates to a water cooling system, and
more particularly, to a water temperature cooling system using two
heat exchangers to provide water with constant temperature to cool
target equipment.
2. Descriptions of Related Art
[0002] Cooling processes are important for most of the industrial
production plants such as to cool plastic products or wafers. It is
experienced that the change of temperature of the water for cooling
the products may affect shrinkage of the products. In order to
control the temperature of the water for cooling the products, a
temperature control system 300 is developed as shown in FIG. 3, and
the temperature control system 300 includes a temperature control
device 400 and a heat exchanger 500 which includes a hot water path
800, a refrigerant path 600 and an even temperature water path 700.
The temperature control device 400 controls the operation of the
hot water path 800, the refrigerant path 600 and the heat exchanger
500 to keep the water temperature of the even temperature water
path 700 to be close to the desired temperature. The water in the
even temperature water path 700 flows to the target equipment 900
to cool the product. The water then flows from the target equipment
900 to the even temperature water path 700 to form a water
circulation. The water in the even temperature water path 700 flows
through the heat exchanger 500, the hot water path 800 and the
refrigerant path 600 to reduce severe temperature change to the
water, such that the temperature difference of the water from the
even temperature water path 700 to the target equipment 900 does
not change too much. However, the conventional water cooling system
cannot meet specific needs for cooling wafers.
[0003] The present invention intends to provide a water cooling
system which provides water of constant temperature to target
equipment.
SUMMARY OF THE INVENTION
[0004] The present invention relates to a water cooling system and
comprises a temperature control device and a first heat exchanger.
The first heat exchanger includes a hot water path, a refrigerant
path and an even temperature water path. Two ends of the hot water
path are respectively connected to the temperature control device,
and two ends of the refrigerant path are respectively connected to
the temperature control device as well. The even temperature water
path includes an even temperature water outlet and an even
temperature water inlet. A first pump is connected between a first
tank and the even temperature water inlet. A second heat exchanger
includes a water temperature control path and a constant
temperature water path. The water temperature control path includes
a first inlet and a first outlet. The first inlet is connected to
the even temperature water outlet. The first outlet is connected to
the first tank. The constant temperature water path includes a
constant temperature water outlet and a constant temperature water
inlet. A target equipment is connected between the constant
temperature water outlet and a second tank. A second pump is
connected between the second tank and the constant temperature
water inlet.
[0005] The temperature control device controls the temperature of
the refrigerant path and the even temperature water path,
therefore, the water in the even temperature water path reaches a
pre-set temperature via the first heat exchanger, the hot water
path and the refrigerant path. The water in the even temperature
water path flows through the water temperature control path and
enters into the first tank. The first pump pumps the water in the
tank to the even temperature water path to form a circulation. The
second pump pumps the water in the second tank to the constant
temperature water path, and the water in the constant temperature
water path flows through the second heat exchanger to proceed heat
exchange with the water in the water temperature control path so
that the water from the constant temperature water path keeps the
pre-set temperature and flows to the target equipment. The water in
the target equipment then flows back to the second tank.
[0006] The present invention will become more apparent from the
following description when taken in connection with the
accompanying drawings which show, for purposes of illustration
only, a preferred embodiment in accordance with the present
invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 shows the water cooling system of the present
invention;
[0008] FIG. 2 shows another embodiment of the water cooling system
of the present invention, and
[0009] FIG. 3 shows the conventional water cooling system.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0010] Referring to FIG. 1, the water cooling system 10 of the
present invention comprises a temperature control device 1, a first
heat exchanger 2, a first tank 3, a first pump 4, a second heat
exchanger 5, a second tank 6, and a second pump 7. The first heat
exchanger 2 includes a hot water path 21, a refrigerant path 22 and
an even temperature water path 23. The two ends of the hot water
path 21 are respectively connected to the temperature control
device 1, and the two ends of the refrigerant path 22 are
respectively connected to the temperature control device 1 as well.
The even temperature water path 23 includes an even temperature
water outlet 231 and an even temperature water inlet 232. The first
pump 4 is connected between the first tank 3 and the even
temperature water inlet 232 so as to pump the water in the first
tank 3. The second heat exchanger 5 includes a water temperature
control path 51 and a constant temperature water path 52. The water
temperature control path 51 includes a first inlet 511 and a first
outlet 512. The first inlet 511 is connected to the even
temperature water outlet 231, and the first outlet 512 is connected
to the first tank 3. The constant temperature water path 52
includes a constant temperature water outlet 522 and a constant
temperature water inlet 521. A target equipment 200 is connected
between the constant temperature water outlet 522 and the second
tank 6. The second pump 7 is connected between the second tank 6
and the constant temperature water inlet 521 so as to pump the
water in the second tank 6.
[0011] When the water cooling system 10 operates, the temperature
control device 1 controls the temperature of the refrigerant path
22 and the even temperature water path 23 so that the water in the
even temperature water path 23 reaches a pre-set temperature via
the first heat exchanger 2, the hot water path 21 and the
refrigerant path 22. The water in the even temperature water path
23 flows through the water temperature control path 51 and enters
into the first tank 3. The first pump 4 pumps the water in the tank
3 to the even temperature water path 23 to form a circulation.
[0012] The second pump 7 pumps the water in the second tank 6 to
the constant temperature water path 52, and the water in the
constant temperature water path 52 flows through the second heat
exchanger 5 to proceed heat exchange with the water in the water
temperature control path 51 so that the water from the constant
temperature water path 52 keeps the pre-set temperature and flows
to the target equipment 200. The water in the target equipment 200
then flows back to the second tank 6. There are multiple
temperature sensors 8 installed to the even temperature water
outlet 231, the first outlet 512, the constant temperature water
outlet 522, a position of the target equipment 200 where water
leaves from the target equipment 200, and the first tank 3. The
temperature control device 1 judges the water temperature by these
multiple temperature sensors 8 so as to control the hot water path
21 and the refrigerant path 22. The multiple temperature sensors 8
send signals back to the temperature control device 1 by way of
wireless transmission or cable transmission. The temperature
control device 1 can also include condensation unit, compressor,
heater and hot pump to control the hot water path 21 and the
refrigerant path 22.
[0013] The water temperature is stable by using the first heat
exchanger 2 to proceed heat exchange to the water in the hot water
path 21 and the refrigerant path 22. The water in the constant
temperature water path 52 flows through the second heat exchanger 5
to proceed heat exchange with the water in the water temperature
control path 51 so that the water from the constant temperature
water path 52 keeps the pre-set temperature and flows to the target
equipment 200. That is to say, the water that flows to the target
equipment 200 is proceeded by two times of heat exchange so that
the temperature of the water to the target equipment is more stable
than that of the conventional water cooling system. The water
temperature proceeded by the conventional water cooling system can
be controlled within a range of positive 0.1 to minus 0.1 degrees
Celsius. The water temperature proceeded by the water cooling
system 10 of the present invention can be controlled within a range
of positive 0.05 to minus 0.05 degrees Celsius.
[0014] As shown in FIG. 2, a switch 9 is connected between the
constant temperature water inlet 521 and the second pump 7. The
switch 9 checks water flowing through the switch 9 and sends a
signal to the temperature control device 1 to confirm that the
second pump 7 pumps water to the constant temperature water path
52. By this way, the operation between the second pump 7 and the
constant temperature water path 52 can be monitored, for example,
the second pump 7 fails to operate or the second pump is stocked.
The communication between the switch 9 and the temperature control
device 1 can be cabled or wireless. A release valve 100 is
connected between the second pump 7 and the second tank 6 to form a
release path 101. When the second pump 7 pumps the water in the
second tank 6 to the constant temperature water path 52, a portion
of the water pumped by the second pump 7 flows back to the second
tank 6 by the settings or the release valve 100 so as to control
water pressure of the water from the second pump 7 to the constant
temperature water path 52. Another portion of the water pumped by
the second pump 7 flows to the switch 9. This is able to control
the water pressure of the water that flows from the second pump 7
to the constant temperature water path 52, and to control the water
pressure of the water that flows from constant temperature water
path 52 to the target equipment 200. By this arrangement, the
second heat exchanger 5 and the target equipment 200 are protected
from being damaged by high pressure.
[0015] Besides, the second heat exchanger 5 includes a reservoir 53
which is filled with heat-conductive agent (not shown) and
vacuumed. By this arrangement, the efficiency of the second heat
exchanger 5 is improved. The heat-conductive agent can be
refrigerant or water.
[0016] The water cooling system 10 further comprises a three-way
valve 110 and a check valve 20. The three-way valve 110 includes a
valve inlet 111, a valve first outlet 112 and a valve second outlet
113. The valve inlet 111 is connected with the even temperature
water outlet 231. The valve first outlet 112 is connected with the
first inlet 511 of the water temperature control path 51. The valve
second outlet 113 is connected with the first tank 3. The check
valve 120 includes an entrance 121 and an exit 122, wherein the
entrance 121 is connected with the first outlet 512 of the water
temperature control path 51, and the exit 122 is connected with the
first tank 3. The three-way valve 110 controls water volume from
the even temperature water outlet 231 to the first inlet 511 of the
water temperature control path 51 according to settings of the
temperature control device 1. Therefore, for a portion of the water
that does not flow to the first inlet 511, the three-way valve 110
controls water volume from the valve second outlet 113 to the first
tank 3 so that water cannot flows from the exit 122 to the entrance
121 of the check valve 120. The three-way valve 110 is able to
control the water volume to the water temperature control path 51
so that the temperature difference of the water to the target
equipment 200 is further minimized. The check valve 120 prevents
the water from the valve second outlet 113 from flowing back to
first outlet 512 of the water temperature control path 51 to affect
the water temperature to the target equipment 200. The temperature
control device 1 controls the three-way valve 110 by the signals
feedback from the temperature sensors 8, for example, the
temperature sensor 8 of the first tank 3 sends signals of water
temperature back to the temperature control device 1. The
temperature sensor 8 may be installed at the first outlet 512 of
the water temperature control path 51, and the temperature sensor 8
is located between the first outlet 512 of the water temperature
control path 51 and the entrance 121 of the check valve 120.
[0017] While we have shown and described the embodiment in
accordance with the present invention, it should be clear to those
skilled in the art that further embodiments may be made without
departing from the scope of the present invention.
* * * * *