US20070022773A1

US20070022773A1 - Cooling energy saving structure

Info

Publication number: US20070022773A1
Application number: US11/404,797
Authority: US
Inventors: Chin-Wen Wang; Ching-Chung Wang; Pei-Choa Wang
Original assignee: Augux Co Ltd
Current assignee: AUGUZ Co Ltd; Pyroswift Holding Co Ltd
Priority date: 2005-07-27
Filing date: 2006-04-17
Publication date: 2007-02-01
Also published as: TWM282459U; JP3123141U

Abstract

A cooling energy saving structure, capable of connecting to a PCB multi-axial driller, includes a chiller, a freezing dryer, and a thermal superconductive recycling device, where the chiller has a liquid outward piping and a liquid inward piping, the freezing dryer has a gas outward piping and a gas inward piping, and the thermal superconductive recycling device accommodates the liquid inward piping of the chiller and the gas outward piping of the dryer. The device further features cooling the liquid in the inward piping before it flows back to the chiller, and heating the gas in the outward piping before it is discharged. The heat exchange performed between the flow back liquid of the chiller and the discharged gas of the dryer takes advantage of the device, which proves to have substantially cut down energy consumption and power expenditure for a very effective use of energy resources.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to cooling energy saving structures. In particular, the present invention relates to a cooling energy saving structure that is capable of connecting to a PCB multi-axial driller, sizably reducing energy consumption and electricity charge for a very effective use of energy resources.
2. Description of the Prior Art
During the drilling process on a printed circuit board (PCB), a demand for manufacturing environment calls for a precise control over temperature, humidity, and dust-free and free of disturbance by chemical substances. How on earth does the above demand meet? The answer is to separate factory buildings sufficiently from the outside world to form a closed space, followed by linking the closed space to an air-conditioning system that breathes in unceasingly outdoor fresh air, cools it down, and pipes it into the closed space to keep a constant temperature for a driller during its sustained running with circuit boards. The PCB multi-axial driller is operated in a 24-hours unceasing mode with both its motor and rotary axis running in a rotation rate above 250,000 rpm. The drilling operation calls for chiller and freezing dryer to ceaselessly offer liquid and gas that are the operational requirements and an operation for the drop of temperature, to ensure the speed and quality of the process. However, the maintenance of indoor temperature, and the energy consumption by the chiller and the freezing dryer will certainly lift costs of utilities and production. Moreover, the spreading of poison gases (CO₂etc.) emitted by the equipment has already seriously endangered the ecological balance of surroundings. Therefore, how to amply and efficiently exercise the energy resources have already become tremendous themes of research for those devoted in that industry.
Conventional PCB multi-axial drillers have a cooling structure as shown in FIG. 1. The configuration is arranged by connecting a chiller 10 a and a freezing dryer 20 a to a PCB driller 5 a, where the chiller 10 a (a general specification is marked 3RT, with a flow rate: 20 l/min, which outputs cooled water in a temperature of 16˜20° C.) has a liquid outward piping 11 a and a liquid inward piping 12 a, also cools the liquid that is stored in the chiller 10 a by a freezing circulation device, and drains the low-temperature liquid into the liquid outward piping 11 a, for the purpose of cooling the Z-axial motor 51 a and the rotary axis 52 a of the PCB driller 5 a, whereas the freezing dryer 20 a inbreathes outside air through a gas inward piping 22 a into its inside, then condenses and dehumidifies the air in it 20 a by a freezing circulation device, and discharges the cool and dry air through a gas outward piping 21 a, for the use by the air bearing of the rotary axis 52 a of the PCB driller 5 a.
However, the cooling structure of the conventional PCB multi-axial drillers still has drawbacks as follows:
Firstly, reducing the temperature of cooling water to 16˜20° C. by the 3RT chiller 10 a, not only consumes energies, but also spreads exhaust heat in the air-conditioning rooms which will overload the operation of the air conditioner.
Secondly, the 3RT chiller 10 a is used as a means to perform heat exchange for the cooling water, and capillaries related to its coolant are controlled in a state of minute operation over a long period of time while the compressor are lacking of controlling over load reduction, which results in the freezing efficiency of the chiller much worse than the expected, and the on and off operations of the compressor further raises power consumption.
Thirdly, the chiller 10 a, the freezing dryer 20 a, and the PCB driller 5 a are set to expose in the air-conditioning rooms and the exhaust heat out of these equipment further overload the air conditioner and power consumption.
Fourthly, during the standby for the rotary axis 52 a of the driller 5 a, the freezing dryer 20 a still provides unceasingly low-temperature compressed air which causes the temperature of rotary axis 52 a too low that in turn yields troubles of condensing into dewing and dripping.
Fifthly, the freezing circulation device of the chiller 10 a and the freezing dryer 20 a make use of coolants as R22 or R134a in its internal piping as the cooling source that brings about grave damage to ecological environment and the ozone layer.
Accordingly, the inventor recognizes the foregoing problems, aiming at proposing the present invention which is a feasible design with an effective improvement upon those problems based on the strength of his long years of industry experience and research.

SUMMARY OF THE INVENTION

The present invention is to provide a cooling energy saving structure to perform heat exchange between inward liquid of a chiller and outward gas of a freezing dryer through the use of a thermal superconductive device, which can substantially lower energy consumption and electricity expenditure for a very effective use of energy.
To fulfill the foregoing purposes, the present invention provides a cooling energy saving structure, capable of connecting to a PCB multi-axial driller, where the structure comprises:
a chiller, which has a liquid outward piping and a liquid inward piping;
a freezing dryer, which is located in one side of the chiller, where the freezing dryer has a gas outward piping and a gas inward piping; and
a thermal superconductive recycling device, which accommodates the liquid inward piping of the chiller and the gas outward piping of the freezing dryer, then cools the liquid in the liquid inward piping before it flows back to the chiller, and heats the gas in the outward gas piping before it is discharged, to accomplish the desired goal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram showing a connection between conventional type of a chiller with a freezing dryer and a PCB multi-axial driller;
FIG. 2 is a schematic diagram showing a connection between the present invention and the PCB multi-axial driller;
FIG. 3 shows a complete view of a thermal superconductive recycling device of the present invention;
FIG. 4 is a pictorial exploded view of a module of uniform temperature plates of the present invention;
FIG. 5 is a longitudinal-sectional view of the thermal superconductive recycling device of the present invention;
FIG. 6 is a cross-sectional view of the thermal superconductive recycling device of the present invention; and
FIG. 7 shows a structural view of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The characteristics and technical contents of the present invention will become apparent by referring to the following detailed description and accompanying drawings, where the drawings are considered to be illustrative, and should not be considered to be restrictive.
Referring to FIG. 2, it is a schematic diagram showing a connection between the present invention and the PCB multi-axial driller. The present invention provides a cooling energy saving structure, capable of connecting to a PCB multi-axial driller 5, where the cooling energy saving structure comprises a chiller 10, a freezing dryer 20, and a thermal superconductive recycling device 30, wherein:
The chiller 10 comprises a chilled-water tank 11 and a freezing circulation device (as shown in FIG. 7), where the chilled-water tank 11 is filled with liquid which can be the types of oil or water, and the freezing circulation device is used for cooling the liquid in the chilled-water tank 11. The freezing circulation device is composed of the basic parts of refrigeration and ventilation: compressor, condenser, inflation valve, evaporator, and radiator fan. Since the parts belong to the prior art, detailed description about them is neglected herein. The chilled-water tank 11 has joints to a liquid outward piping 12 and a liquid inward piping 13, and the liquid can be circulated around the chilled-water tank 11, the outward piping 12, and the inward piping 13 with the support by a pump.
The freezing dryer 20 contains a freezing circulation device (as shown in FIG. 7) too, where the big difference between it and the foregoing chilled-water tank 11 is in the processes of dehumidifying and condensing on the gas. The freezing dryer has joints to a gas outward piping 21 and a gas inward piping 22.
Referring to FIG. 3, it shows a complete view of a finished thermal superconductive recycling device of the present invention, where the thermal superconductive recycling device 30 comprises a barrel 31 and a module 32 of uniform temperature plates contained in the barrel, where the barrel 31 is round in shape, and has a front cover plate 33 and a back cover plate 34 attached on its two ends. In the middle part of the front cover plate 33 are a liquid inlet 331 and a liquid outlet 332, and a gas outlet 333 at the upside of the liquid inlet 331. A gas inlet 341 is situated at the bottom part of the back cover plate 34. During assembling, the liquid inward piping 13 of the chiller 10 is taken to connect to the liquid inlet 331 and liquid outlet 332 of the thermal superconductive recycling device 30, and the gas outward piping 21 of the freezing dryer 20 is taken to connect to the gas inlet 341 and gas outlet 333 of the thermal superconductive recycling device 30. This is the way to construct a cooling energy saving structure.
Referring to FIG. 4, this is a pictorial exploded view of a module of uniform temperature plates of the present invention, where the module 32 of uniform temperature plates comprises a tube 321, a plurality of uniform temperature plates 322, a pair of radiating plate bank 323 sticking on the top and bottom surfaces of each uniform temperature plate 322, and two fixing sheets 324 where each can fasten one uniform temperature plate 322 to the tube 321. The tube 321 is I-shaped, and a dual flow channel 325 is formed on the top and bottom sides thereof. A plurality of screw holes 326 are set in the top side of the tube 321, and a plurality of through holes 327 rested in the fixing sheet 324 are physical counterparts of the screw holes 326 for providing fasteners as screws to fasten each uniform temperature plate 322 between the fixing sheet 324 and one side of the tube 321. A plurality of fins on the inside of the flow channel 325 are inward extending, for elongating the staying of liquid to promptly drain the heat produced by the uniform temperature plate 322. Moreover, the radiating plate bank 323 is composed of a plurality of radiating plates, and gas interspaces are formed in between any of two plates, where the gas interspaces are kept parallel with the axial direction of the barrel 31.
Referring to FIG. 5 and FIG. 6, these two figures together show a longitudinal-sectional view and a cross-sectional view of the thermal superconductive recycling device of the present invention. A heat insulation substance 35 which is fitted in the space between the inside wall of the barrel 31 and the module 32 of uniform temperature plates, enables the heat flow produced by the liquid inward piping 13 of the chiller 10 and the cold flow produced by the gas outward piping 21 of the freezing dryer 20, to be sealed in the barrel 31, independent of gas temperature of outside world, and performs the heat exchange process of the two flows.
Referring again to FIG. 2, it shows a connection of the cooling energy saving structure of the present invention to a PCB multi-axial driller 5. The driller 5 has a Z-axial motor 51 and a rotary axis 52 joined to the Z-axial motor 51. The outer part of the Z-axial motor 51 accommodates the liquid outward piping 12 and the liquid inward piping 13 of the chiller 10 with an interconnection. In addition, the outer part of the rotary axis 52 accommodates a branch of the liquid outward piping 12 and a branch of the liquid inward piping 13 of the chiller 10 with an interconnection, and provides a connection for the gas outward piping 21 of the freezing dryer 20. At the moment the multi-axial driller 5 is powered on into operation, with the support by a pump the liquid outward piping 12 of the chiller 10 carries out liquid delivery to the Z-axis motor 51 and rotary axis 52 of the driller 5 simultaneously, and takes away the high heat generated by the motor 51 and the rotary axis 52 during high-speed revolution, through the liquid inward piping 13 to the thermal superconductive recycling device 30. On the other hand, the freezing dryer 20 activates condensing and dehumidifying processes on the inbreathed gas, to avoid troubles of condensing into dewing and dripping in the rotary axis 52 during the standby of the driller 5, and a phenomenon of low temperature condensation in the gas outward piping 21 of the freezing dryer 20 which affects the flow rate of the gas. A remedy is to put the gas outward piping 21 through the thermal superconductive recycling device 30, the temperature of the gas will rise through the help of the backflow of the foregoing high temperature liquid. Accordingly, the foregoing description constitutes the circulation of the cooling energy saving structure of the present invention.
Referring to FIG. 7, it is a structural view of the present invention. The cooling energy saving structure further comprises a case 40, where the case 40 has a hollow space 41 which accommodates the above mentioned chiller 10, the freezing dryer 20, and the thermal superconductive recycling device 30. The liquid outward piping 12 and inward piping 13 of the chiller 10 pass through the case 40, and the same goes for the gas outward piping 21 of the freezing dryer 20 (shown in FIG. 2). Hence, the foregoing construction allows the heat exchange of the parts not to affect the temperature of factory buildings, which substantially lower the operational usage and energy consumption.

A cross-reference table on benefit between the cooling energy saving structure of the present invention and the conventional PCB multi-axial driller structure is as follows:



Prior art	Present Invention	Benefit

1. Chiller	3RT.20LPM	1.67RT.20LPM	mini
2. Freezing dryer	0.5RT.1100LPM	0.5RT.1100LPM
	7 kgf/cm * cm	7 kgf/cm * cm
3. Power	5.03 kw	3.3 kw	reduce
consumption(1 + 2)			1.7 kw
4. Exhaust heat	12.1 kw	7.48 kw	reduce
(1 + 2)			4.62 kw
5. Air-conditioner	18.84 kw	11.68 kw	7.16 kw
load increment
(1 + 2)
6. Air-conditioner	6.28 kw	3.89 kw	reduce
power increment			3.29 kw
(C.O.P-3)
7. Total power	11.1 kw	7.19 kw	reduce
consumption(3 + 6)			3.91 kw
8. Annual power	$149,743/yr	$96,996/yr	save
bill($2.2/degree)			$52,747/yr
24 hrs a day
(estimated at 70%)
9. CO2exhaust	72,961 kg/yr	46,678 kg/yr	reduce
(1 KW-H produce			25,383 kg/yr
741.1 g CO2)

To summarize the foregoing description, it is apparent that the cooling energy saving structure of the present invention possesses utility, novelty and non-obviousness, and the structure of the present invention has never given its presence to the similar species or public uses, fully in compliance with the requirements of invention patentability, thereby filing the present application herein subject to the patent law.
While the foregoing description has been shown as the preferred practicable example, it shouldn't limit the claim of the present invention; therefore, any variations of equivalent structure and direct or indirect use in the relevant technical fields which come within the meaning and range of the claims and contents of the application of the present invention and accompanying drawings are therefore intended to be embraced therein.

Claims

1. A cooling energy saving structure, comprising:

a chiller, having a liquid outward piping and a liquid inward piping;

a freezing dryer, being located in one side of said chiller, said freezing dryer having a gas outward piping and a gas inward piping; and

a thermal superconductive recycling device, for accommodating the liquid inward piping of said chiller and the gas outward piping of said freezing dryer, for cooling liquid in the liquid inward piping before the liquid flows back to said chiller, and for heating gas in the outward gas piping before the gas is discharged.

2. A cooling energy saving structure according to claim 1, wherein said cooling energy saving structure is connected to a PCB multi-axial driller, which has a Z-axis motor and a rotary axis joined to the Z-axis motor, and the liquid outward piping of said chiller is connected to the Z-axis motor and the rotary axis, whereas the gas outward piping of said freezing dryer is connected to the rotary axis.

3. A cooling energy saving structure according to claim 1, wherein said thermal superconductive recycling device comprises a barrel and a module of uniform temperature plates built in the barrel.

4. A cooling energy saving structure according to claim 3, wherein the module of uniform temperature plates comprises a tube, a plurality of uniform temperature plates, a pair of radiating plate bank sticking on the top and bottom surfaces of each uniform temperature plate, and two fixing sheets where each can fasten one uniform temperature plate to the tube.

5. A cooling energy saving structure according to claim 4, wherein the radiating plate bank comprises a plurality of radiating plates, and gas interspaces are formed in between any of two plates, where the gas interspaces are kept parallel with the axial direction of the barrel.

6. A cooling energy saving structure according to claim 3, wherein the barrel is round in shape, and has a front cover plate and a back cover plate attached on its two ends, where the front cover plate has a liquid outlet, a liquid inlet, and a gas outlet, and the back cover plate has a gas inlet.

7. A cooling energy saving structure according to claim 6, wherein the liquid inward piping of said chiller is connected to the liquid inlet and liquid outlet of said thermal superconductive recycling device, and the gas outward piping of said freezing dryer is connected to the gas inlet and the gas outlet of said thermal superconductive recycling device.

8. A cooling energy saving structure according to claim 3, wherein a heat insulation substance is fitted in the space between the inside wall of the barrel and the module of uniform temperature plates.

9. A cooling energy saving structure according to claim 1, further comprising a case, where the case has a hollow space which accommodates said chiller, said freezing dryer, and said thermal superconductive recycling device, and the piping relating to said chiller and said freezing dryer respectively pass through the case in an inward or outward manner.