CN107577316B - Built-in computer multiple heat abstractor - Google Patents
Built-in computer multiple heat abstractor Download PDFInfo
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- CN107577316B CN107577316B CN201710978080.1A CN201710978080A CN107577316B CN 107577316 B CN107577316 B CN 107577316B CN 201710978080 A CN201710978080 A CN 201710978080A CN 107577316 B CN107577316 B CN 107577316B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention discloses a built-in computer multiple heat dissipation device, and belongs to the technical field of computer accessories. The built-in computer multiple heat dissipating device comprises a frame, a heat dissipating fan and an auxiliary heat sink, wherein the frame is provided with an air channel, the heat dissipating fan is arranged in the air channel, the auxiliary heat sink comprises a heat exchanger, a refrigerator and a water pump which are mutually communicated and form a heat dissipating channel, the heat exchanger, the refrigerator and the water pump are mutually communicated and form the heat dissipating channel, cooling liquid is arranged in the heat dissipating channel, and the heat exchanger is arranged at the air inlet. The built-in computer multiple heat dissipation device provided by the invention has the advantages that when the outside air temperature does not exceed the preset temperature threshold, the heat dissipation fan works and the auxiliary heat radiator can stop working, the computer is cooled by air cooling, and when the outside air temperature does not exceed the preset temperature threshold, the heat dissipation fan and the auxiliary heat radiator can work simultaneously, so that the heat dissipation effect of the multiple heat dissipation device is better, and the service life of the computer is effectively prolonged.
Description
Technical Field
The invention relates to the technical field of computer accessories, in particular to a built-in computer multiple heat dissipation device.
Background
Integrated circuits are used in large numbers in computer components. It is well known that high temperature is a major challenge for integrated circuits. The high temperature not only can cause unstable operation of the system and shorten the service life, but also can cause burning of certain parts. The heat that causes the high temperature is not from outside the computer, but inside the computer, or inside the integrated circuit. The heat dissipation is to radiate the heat into or out of the case by various methods to ensure the normal temperature of computer components.
In the prior art, an air cooling heat dissipation mode is often adopted, and the mode is low in cost, however, when the air temperature is higher, an ideal heat dissipation effect cannot be achieved, and the performance and the service life of a computer are affected.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a built-in computer multiple heat dissipation device which has better heat dissipation effect and can effectively prolong the service life of a computer.
In order to solve the technical problems, the invention provides the following technical scheme:
the built-in computer multiple heat dissipation device comprises a rack, a heat dissipation fan and an auxiliary heat radiator, wherein the rack is arranged in a computer case, the rack is provided with an air channel, one end of the air channel is an air inlet, the other end of the air channel is an air outlet, the heat dissipation fan is arranged in the air channel and is powered by an external power supply or a computer power supply, and the heat dissipation fan can drive air to enter the air channel from the air inlet and flow out to a region to be dissipated through the air outlet; the auxiliary radiator comprises a heat exchanger, a refrigerator and a water pump, wherein the heat exchanger, the refrigerator and the water pump are mutually communicated and form a heat dissipation channel, cooling liquid is arranged in the heat dissipation channel, the heat exchanger is arranged at the air inlet and is used for absorbing heat of air at the air inlet, the refrigerator is arranged outside a computer case and is used for refrigerating the cooling liquid, a liquid inlet of the heat exchanger is communicated with a liquid outlet of the refrigerator through the water pump, a liquid outlet of the heat exchanger is communicated with the liquid inlet of the refrigerator, the water pump is powered by an external power supply or a computer power supply and drives the cooling liquid to circularly flow in the heat dissipation channel, and a control switch is arranged on the water pump and is used for controlling the water pump to be started or closed.
Still preferably, the built-in computer multiple heat dissipating device provided by the invention, wherein the refrigerator comprises a sealed shell and a refrigerating water pipe, the sealed shell is provided with a refrigerating cavity, a refrigerating ice bag is placed in the refrigerating cavity, the refrigerating water pipe is respectively communicated with the heat exchanger and the water pump, the refrigerating water pipe is arranged in the refrigerating cavity in a winding way, the refrigerating ice bag is used for refrigerating the cooling liquid in the refrigerating water pipe, and the sealed shell is detachably connected with the refrigerating water pipe.
Still preferably, the present invention provides a built-in multiple heat dissipating device for a computer, wherein the rack is cylindrical, a fixing ear for fixing with a computer case is provided on an outer surface of the rack, a fixing through hole for penetrating a bolt is provided on the fixing ear, a plane of the heat exchanger is perpendicular to an axis of the rack, a rotation axis of the heat dissipating fan coincides with the axis of the rack, an annular groove is provided on an inner surface of the rack, and the annular groove is provided along a circumferential direction of the rack; the heat exchanger comprises a spiral pipe and at least three supporting pieces, wherein the spiral pipe is in a spiral shape and is used for the cooling liquid to flow, the at least three supporting pieces are arranged on the outer side of the spiral pipe along the circumferential direction of the spiral pipe, and the supporting pieces extend along the axial direction of the machine frame; the support piece comprises a tubular piece, a compression spring, a piston rod and an embedded block, wherein one end of the tubular piece is fixedly connected with the spiral pipe, the piston rod stretches into the tubular piece, the compression spring is located in the tubular piece and props against one end of the piston rod, the embedded block is fixed to one end, far away from the compression spring, of the piston rod and is embedded in the annular groove, and the compression spring compresses the embedded block in the annular groove and enables the piston rod to have a trend of being far away from the spiral pipe.
Still preferably, the supporting piece further comprises a connecting spherical hinge, the connecting spherical hinge comprises a ball head and a spherical shell, the spherical shell is provided with a spherical cavity, the ball head is arranged in the spherical cavity, the spherical shell can rotate around the spherical center of the ball shell, one end of the piston rod is fixedly connected with the spherical shell, the embedded block is fixedly connected with the ball head, and the end face of the ball head is a columnar surface and is attached to the annular groove; the inner surface of the tubular piece is provided with an internal thread, the outer surface of the sealing piece is provided with an external thread matched with the internal thread, the sealing piece is in threaded engagement with the inside of the tubular piece, the compression spring is respectively abutted against the sealing piece and the piston rod, and one end of the sealing piece, which is far away from the compression spring, is provided with an internal hexagonal groove for screwing; the closing block is movable within the tubular member and closer to or farther from the spiral tube when the closing block is screwed.
Still preferably, the invention provides a built-in computer multiple heat dissipating device, wherein silica gel pads are disposed on two sides of the fixing lug.
Still preferably, the embedded block is provided with a magnetic adsorption part, the magnetic adsorption part comprises a magnet, an adsorbed part is arranged in the annular groove, and the magnetic adsorption part is connected with the adsorbed part through magnetic adsorption.
Still preferably, the present invention provides a built-in multiple heat dissipating device for a computer, wherein the fixing through hole is a slotted hole.
Still preferably, the present invention provides a built-in multiple heat dissipating device for a computer, wherein rubber hoses are used for communication between the heat exchanger and the refrigerator, between the heat exchanger and the water pump, and between the refrigerator and the water pump.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention relates to a built-in computer multiple heat dissipating device, which comprises a frame, a heat dissipating fan and an auxiliary heat sink, wherein the frame is provided with an air duct, the heat dissipating fan is arranged in the air duct, the auxiliary heat sink comprises a heat exchanger, a refrigerator and a water pump which are mutually communicated and form a heat dissipating channel, the heat exchanger, the refrigerator and the water pump are mutually communicated and form the heat dissipating channel, cooling liquid is arranged in the heat dissipating channel, the heat exchanger is arranged at an air inlet, and a control switch is arranged on the water pump.
(2) When the temperature of the external air does not exceed the preset temperature threshold, the heat radiating fan and the auxiliary radiator can work, the computer can be radiated in an air cooling radiating mode, when the temperature of the external air does not exceed the preset temperature threshold, the heat radiating fan and the auxiliary radiator can work simultaneously, the auxiliary radiator absorbs the heat of the air at the air inlet, the temperature of the air at the air inlet is reduced, the cooled air is blown to an area to be radiated by the heat radiating fan, the computer can be effectively radiated, and the heat absorbed by the auxiliary radiator is discharged through the refrigerator and circularly cooled. Of course, the auxiliary radiator may not operate when the outside air temperature does not exceed the preset temperature threshold, and may also operate when the outside air temperature exceeds the preset temperature threshold. The multiple heat dissipation device has better heat dissipation effect and effectively prolongs the service life of the computer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a built-in computer multiple heat dissipating device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the mating relationship of a rack, a radiator fan, and a heat exchanger;
FIG. 3 is a schematic diagram of the mating relationship of a rack and a cooling fan;
FIG. 4 is a schematic view of a heat exchanger;
FIG. 5 is a schematic view of the structure of the support;
fig. 6 is a schematic view of the internal construction of the support.
In the figure: 10-multiple heat sinks; 11-a frame; 12-a heat radiation fan; 13-an auxiliary radiator; 110-fixing lugs; 130-a heat exchanger; 131-a refrigerator; 132-a water pump; 133-a sealed housing; 134-a refrigeration water pipe; 135-spiral tube; 136-a support; 137-a tubular member; 138-hold-down spring; 139-a piston rod; 140-embedding blocks; 141-connecting a spherical hinge; 142-closing blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Fig. 1 is a schematic structural diagram of a built-in computer multiple heat dissipating device according to an embodiment of the present invention; FIG. 2 is a schematic diagram of the mating relationship of a rack, a radiator fan, and a heat exchanger; FIG. 3 is a schematic diagram of the mating relationship of a rack and a cooling fan; FIG. 4 is a schematic view of a heat exchanger; FIG. 5 is a schematic view of the structure of the support; fig. 6 is a schematic view of the internal construction of the support.
Referring to fig. 1 and 2, an embodiment of the invention provides a built-in computer multiple heat dissipation device 10, wherein the multiple heat dissipation device 10 includes a frame 11, a heat dissipation fan 12 and an auxiliary heat sink 13.
The rack 11 is installed in the computer case, and the rack 11 is provided with an air channel, one end of the air channel is an air inlet, and the other end of the air channel is an air outlet.
Referring to fig. 3, the frame 11 is cylindrical, a fixing lug 110 for fixing with a computer case is disposed on an outer surface of the frame 11, and silica gel pads are disposed on two sides of the fixing lug 110.
The fixing lug 110 is provided with a fixing through hole for penetrating the bolt, wherein the fixing through hole can be a round hole or a long round hole.
The inner surface of the frame 11 is provided with an annular groove, which is provided along the circumferential direction of the frame 11.
The cooling fan 12 is disposed in the air duct and powered by an external power supply or a computer power supply, and the cooling fan 12 can drive air to enter the air duct from the air inlet and flow out to the area to be cooled through the air outlet.
The rotation axis of the heat radiation fan 12 coincides with the axis of the chassis 11.
The auxiliary radiator 13 has a specific structure that: the auxiliary radiator 13 includes a heat exchanger 130, a refrigerator 131, and a water pump 132.
The heat exchanger 130, the refrigerator 131 and the water pump 132 are mutually communicated and form a heat dissipation channel, and concretely, rubber hoses are used for communication between the heat exchanger 130 and the refrigerator 131, between the heat exchanger 130 and the water pump 132 and between the refrigerator 131 and the water pump 132, and cooling liquid is arranged in the heat dissipation channel.
The plane of the heat exchanger 130 is perpendicular to the axis of the frame 11, and the heat exchanger 130 is disposed at the air inlet and is used for absorbing heat of air at the air inlet.
The refrigerator 131 is installed outside the computer case and used for refrigerating the cooling liquid, the liquid inlet of the heat exchanger 130 is communicated with the liquid outlet of the refrigerator 131 through the water pump 132, and the liquid outlet of the heat exchanger 130 is communicated with the liquid inlet of the refrigerator 131.
The water pump 132 is powered by an external power supply or a power supply and drives cooling liquid to circulate in the heat dissipation channel, and a control switch is arranged on the water pump 132 and used for controlling the water pump 132 to be turned on or off.
The refrigerator 131 may adopt, but is not limited to, the following schemes: the refrigerator 131 includes a hermetic case 133 and a refrigerant water pipe 134.
The sealing shell 133 is provided with a refrigerating cavity, a refrigerating ice bag is placed in the refrigerating cavity, the refrigerating water pipe 134 is respectively communicated with the heat exchanger 130 and the water pump 132, the refrigerating water pipe 134 is arranged in the refrigerating cavity in a winding way, the refrigerating ice bag is used for refrigerating cooling liquid in the refrigerating water pipe 134, and the sealing shell 133 is detachably connected with the refrigerating water pipe 134.
Referring to fig. 4, in order to facilitate replacement and installation of the heat exchanger 130 and reduce the influence of vibration of the cooling fan 12 on the heat exchanger 130, the specific structure of the heat exchanger 130 is as follows: the heat exchanger 130 includes a coil 135 and at least three supports 136.
The spiral tube 135 is spiral and is used for cooling liquid to flow, at least three supporting pieces 136 are arranged on the outer side of the spiral tube 135 along the circumferential direction of the spiral tube 135, and the supporting pieces 136 extend along the axial direction of the machine frame 11.
Referring to fig. 5 and 6, the supporting member 136 includes a tubular member 137, a compression spring 138, a piston rod 139, an embedded block 140 and a connecting ball hinge 141,
one end of the tubular member 137 is fixedly connected to the spiral tube 135, the piston rod 139 extends into the tubular member 137, the compression spring 138 is located in the tubular member 137 and abuts against one end of the piston rod 139, the embedded block 140 is fixed to one end of the piston rod 139 far away from the compression spring 138 and embedded in the annular groove, and the compression spring 138 compresses the embedded block 140 in the annular groove and enables the piston rod 139 to have a trend far away from the spiral tube 135.
The embedded block 140 is provided with a magnetic adsorption part, the magnetic adsorption part comprises a magnet, an adsorbed part is arranged in the annular groove, and the magnetic adsorption part is connected with the adsorbed part through magnetic adsorption.
In addition, the connecting ball hinge 141 includes a ball head and a ball shell, the ball shell has a spherical cavity, the ball head is disposed in the spherical cavity, the ball shell can rotate around its own center, one end of the piston rod 139 is fixedly connected with the ball shell, the embedded block 140 is fixedly connected with the ball head, and an end face of the ball head is a cylindrical surface and is attached to the annular groove.
The end of the tubular member 137 near the spiral tube 135 is opened and is closed by the closing block 142, the inner surface of the tubular member 137 is provided with an internal thread, the outer surface of the closing block 142 is provided with an external thread matched with the internal thread, the closing block 142 is in threaded engagement with the inside of the tubular member 137, the compression spring 138 is respectively abutted against the closing block 142 and the piston rod 139, and one end of the closing block 142 far away from the compression spring 138 is provided with an internal hexagonal groove for screwing.
Upon screwing the closing block 142, the closing block 142 can move inside the tubular 137 and close to or away from the spiral tube 135.
The invention relates to a built-in computer multiple heat dissipating device 10, which comprises a frame 11, a heat dissipating fan 12 and an auxiliary heat dissipating device 13, wherein the frame 11 is provided with an air duct, the heat dissipating fan 12 is arranged in the air duct, the auxiliary heat dissipating device 13 comprises a heat exchanger 130, a refrigerator 131 and a water pump 132 which are communicated with each other and form a heat dissipating channel, the heat exchanger 130, the refrigerator 131 and the water pump 132 are communicated with each other and form a heat dissipating channel, cooling liquid is arranged in the heat dissipating channel, the heat exchanger 130 is arranged at an air inlet, and a control switch is arranged on the water pump 132.
When the temperature of the external air does not exceed the preset temperature threshold, the heat radiating fan 12 works and the auxiliary radiator 13 can stop working, the heat of the computer is radiated by the air cooling heat radiation mode, when the temperature of the external air does not exceed the preset temperature threshold, the heat radiating fan 12 and the auxiliary radiator 13 can work simultaneously, the auxiliary radiator 13 absorbs the heat of the air at the air inlet, the temperature of the air at the air inlet is reduced, the cooled air is blown to the area to be radiated by the heat radiating fan 12, the heat absorbed by the auxiliary radiator 13 is discharged through the refrigerator 131, and the circulation refrigeration is realized. The multiple heat dissipation device 10 has better heat dissipation effect and effectively prolongs the service life of the computer.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the present invention is not limited to the above embodiments, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the design concept of the present invention should fall within the protection scope of the present invention, and the claimed technical content of the present invention is fully described in the claims.
Claims (6)
1. A built-in computer multiple heat dissipation device is characterized in that: the multiple heat dissipation device comprises a frame (11), a heat dissipation fan (12) and an auxiliary heat radiator (13), wherein the frame (11) is arranged in a computer case, the frame (11) is provided with an air channel, one end of the air channel is an air inlet, the other end of the air channel is an air outlet, the heat dissipation fan (12) is arranged in the air channel and is powered by an external power supply or a computer power supply, and the heat dissipation fan (12) can drive air to enter the air channel from the air inlet and flow out to a region to be dissipated through the air outlet; the auxiliary radiator (13) comprises a heat exchanger (130), a refrigerator (131) and a water pump (132) which are mutually communicated and form a radiating channel, wherein cooling liquid is arranged in the radiating channel, the heat exchanger (130) is arranged at the air inlet and is used for absorbing heat of air at the air inlet, the refrigerator (131) is arranged outside a computer case and is used for refrigerating the cooling liquid, a liquid inlet of the heat exchanger (130) is communicated with a liquid outlet of the refrigerator (131) through the water pump (132), a liquid outlet of the heat exchanger (130) is communicated with the liquid inlet of the refrigerator (131), the water pump (132) is powered by an external power supply or a computer power supply and drives the cooling liquid to circularly flow in the radiating channel, and a control switch is arranged on the water pump (132) and is used for controlling the water pump (132) to be opened or closed.
The heat exchanger is characterized in that the frame (11) is cylindrical, a fixing lug (110) used for being fixed with a computer case is arranged on the outer surface of the frame (11), a fixing through hole used for penetrating a bolt is arranged on the fixing lug (110), the plane of the heat exchanger (130) is perpendicular to the axis of the frame (11), the rotation axis of the cooling fan (12) is coincident with the axis of the frame (11), an annular groove is formed in the inner surface of the frame (11), and the annular groove is formed along the circumferential direction of the frame (11); the heat exchanger (130) comprises a spiral pipe (135) and at least three supporting pieces (136), wherein the spiral pipe (135) is spiral and is used for the cooling liquid to flow, the at least three supporting pieces (136) are arranged outside the spiral pipe (135) along the circumferential direction of the spiral pipe (135), and the supporting pieces (136) extend along the axial direction of the frame (11); the support piece (136) comprises a tubular piece (137), a compression spring (138), a piston rod (139) and an embedded block (140), one end of the tubular piece (137) is fixedly connected to the spiral pipe (135), the piston rod (139) stretches into the tubular piece (137), the compression spring (138) is positioned in the tubular piece (137) and abuts against one end of the piston rod (139), the embedded block (140) is fixed to one end, far away from the compression spring (138), of the piston rod (139) and embedded in the annular groove, and the compression spring (138) compresses the embedded block (140) in the annular groove and enables the piston rod (139) to have a trend of being far away from the spiral pipe (135);
the supporting piece (136) further comprises a connecting spherical hinge (141), the connecting spherical hinge (141) comprises a ball head and a spherical shell, the spherical shell is provided with a spherical cavity, the ball head is arranged in the spherical cavity, the spherical shell can rotate around the spherical center of the spherical shell, one end of the piston rod (139) is fixedly connected with the spherical shell, the embedded block (140) is fixedly connected with the ball head, and the end face of the ball head is a columnar surface and is attached to the annular groove; an end of the tubular member (137) close to the spiral tube (135) is opened and is closed by a closing block (142), an inner thread is arranged on the inner surface of the tubular member (137), an outer thread matched with the inner thread is arranged on the outer surface of the closing block (142), the closing block (142) is in threaded engagement with the inside of the tubular member (137), the closing block (142) and the piston rod (139) are respectively abutted by the compression spring (138), and an inner hexagonal groove for screwing is arranged at one end, far away from the compression spring (138), of the closing block (142); when the closing block (142) is screwed, the closing block (142) is movable within the tubular member (137) and closer to or farther from the spiral tube (135).
2. The built-in computer multiple heat sink according to claim 1, wherein: the refrigerator (131) comprises a sealing shell (133) and a refrigerating water pipe (134), the sealing shell (133) is provided with a refrigerating cavity, a refrigerating ice bag is placed in the refrigerating cavity, the refrigerating water pipe (134) is respectively communicated with the heat exchanger (130) and the water pump (132), the refrigerating water pipe (134) is arranged in the refrigerating cavity in a winding mode, the refrigerating ice bag is used for refrigerating cooling liquid in the refrigerating water pipe (134), and the sealing shell (133) is connected with the refrigerating water pipe (134) in a detachable mode.
3. The built-in computer multiple heat sink according to claim 1, wherein: both sides of the fixed lug (110) are provided with silica gel pads.
4. The built-in computer multiple heat sink according to claim 1, wherein: the embedded block (140) is provided with a magnetic adsorption part, the magnetic adsorption part comprises a magnet, an adsorbed part is arranged in the annular groove, and the magnetic adsorption part is connected with the adsorbed part through magnetic adsorption.
5. The built-in computer multiple heat sink according to claim 1, wherein: the fixing through hole is a slotted hole.
6. The built-in computer multiple heat sink according to claim 1, wherein: and the heat exchanger (130) and the refrigerator (131), the heat exchanger (130) and the water pump (132) and the refrigerator (131) and the water pump (132) are all communicated by adopting rubber hoses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710978080.1A CN107577316B (en) | 2017-10-18 | 2017-10-18 | Built-in computer multiple heat abstractor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710978080.1A CN107577316B (en) | 2017-10-18 | 2017-10-18 | Built-in computer multiple heat abstractor |
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| CN107577316A CN107577316A (en) | 2018-01-12 |
| CN107577316B true CN107577316B (en) | 2023-04-25 |
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| CN201710978080.1A Active CN107577316B (en) | 2017-10-18 | 2017-10-18 | Built-in computer multiple heat abstractor |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108227351A (en) * | 2018-03-13 | 2018-06-29 | 苏州科勒迪电子有限公司 | It can be applied to the liquid-cooling type radiator of fluorescent wheel heat dissipation |
| CN109323212A (en) * | 2018-11-20 | 2019-02-12 | 佛山科学技术学院 | A kind of LED automobile lamp radiator |
| CN114384746A (en) * | 2022-02-24 | 2022-04-22 | 广州瑞格尔电子有限公司 | Refrigeration type liquid cooling heat dissipation closed LCD projection optical machine |
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| JP4122250B2 (en) * | 2003-03-31 | 2008-07-23 | 山洋電気株式会社 | Electronic component cooling system |
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| CN2338672Y (en) * | 1998-08-13 | 1999-09-15 | 李源锵 | Circulation type ice water cooling fan |
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| CN103977995A (en) * | 2014-04-30 | 2014-08-13 | 盐城工学院 | Rotary dredging device for preventing pipeline silting |
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| CN107577316A (en) | 2018-01-12 |
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