CN215769646U - Cooling device of big data internet server - Google Patents

Cooling device of big data internet server Download PDF

Info

Publication number
CN215769646U
CN215769646U CN202122356658.4U CN202122356658U CN215769646U CN 215769646 U CN215769646 U CN 215769646U CN 202122356658 U CN202122356658 U CN 202122356658U CN 215769646 U CN215769646 U CN 215769646U
Authority
CN
China
Prior art keywords
cooling
liquid
clamp
heat dissipation
server
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202122356658.4U
Other languages
Chinese (zh)
Inventor
刘美丽
刘晓丽
张冬梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yangnan Wuchuang Data Technology Changzhou Co ltd
Original Assignee
Yangnan Wuchuang Data Technology Changzhou Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yangnan Wuchuang Data Technology Changzhou Co ltd filed Critical Yangnan Wuchuang Data Technology Changzhou Co ltd
Priority to CN202122356658.4U priority Critical patent/CN215769646U/en
Application granted granted Critical
Publication of CN215769646U publication Critical patent/CN215769646U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The utility model discloses a cooling device of a big data internet server, which comprises a bracket, a liquid cooling pipeline mechanism and a cooling liquid box, wherein the bracket is arranged on the bracket; a support: the server is fixedly connected with the inner part of the rack plate at equal intervals, servers are placed in the middle of the upper surface of the rack plate, suckers are adsorbed at four corners of the upper surface of the rack plate, supporting columns are arranged at the upper ends of the suckers, and the heights of the supporting columns are greater than the heights of the servers; liquid cooling mechanism: the upper ends of the four supporting columns are fixedly connected at the same height; a cooling liquid tank: fixed connection is in the right side bottom of support, and the right wall downside of coolant liquid case is linked together through the inlet of nozzle stub and self priming pump, and the upper end of self priming pump is passed through the feed liquor pipe respectively with liquid cooling pipeline mechanism's right-hand member intercommunication, the left surface bottom fixedly connected with heat dissipation mechanism of coolant liquid case, this big data internet server's cooling device, the cooling effect is good, realizes the cyclic utilization of coolant liquid, reaches the effect that lasts the circulative cooling server.

Description

Cooling device of big data internet server
Technical Field
The utility model relates to the technical field of cooling devices, in particular to a cooling device of a big data internet server.
Background
The internet is also called as an international network, which means that a huge network is formed by connecting networks in series, the networks are connected by a group of universal protocols to form a single huge international network logically, and big data, or massive data, means that the related data is huge in scale and cannot be captured, managed, processed and organized into information which can help enterprises to make a decision more actively within a reasonable time through the current mainstream software tools.
Can produce a large amount of heats when the server carries out a large amount of data operation, can make the temperature of server rise fast, if can cause serious damage to the server to the too high temperature of server cooling treatment, use general radiator fan to carry out cooling at present usually, the cooling effect is poor, needs the staff to frequently maintain.
The prior art can not guarantee stable good cooling effect, and the installation is inconvenient, and the use place is limited, and personnel's participation dynamics is big, can't accomplish the circulative cooling utilization of coolant liquid, for this reason, we provide a cooling device of big data internet server.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to overcome the existing defects, and provide a cooling device of a big data internet server, which can ensure a stable and good cooling effect, is convenient to install, is not easily limited by a use place, reduces the participation of personnel, and can effectively solve the problems in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: a cooling device of a big data internet server comprises a bracket, a liquid cooling mechanism and a cooling liquid box;
a support: the server is fixedly connected with the inner part of the rack plate at equal intervals, servers are placed in the middle of the upper surface of the rack plate, suckers are adsorbed at four corners of the upper surface of the rack plate, supporting columns are arranged at the upper ends of the suckers, and the heights of the supporting columns are greater than the heights of the servers;
liquid cooling mechanism: the upper ends of the four supporting columns are fixedly connected at the same height;
a cooling liquid tank: the cooling device is fixedly connected to the bottom end of the right side of the support, the lower side of the right wall surface of the cooling liquid tank is communicated with a liquid inlet of the self-priming pump through a short pipe, the upper end of the self-priming pump is respectively communicated with the right end of the liquid cooling mechanism through a liquid inlet pipe, the bottom end of the left surface of the cooling liquid tank is fixedly connected with a heat dissipation mechanism, the right end of the heat dissipation mechanism is communicated with the cooling liquid tank, and the left end of the heat dissipation mechanism is communicated with the left end of the liquid cooling mechanism through a liquid outlet pipe;
wherein: still include the control switch group, the control switch group sets up the front surface in left support, and external power source is connected to the input electricity of control switch group, and the input of self priming pump is connected to the output electricity of control switch group, and the heat that rational design's cooling structure made the server produce can be absorbed by the coolant liquid, can make the server temperature reduce, reaches good cooling effect, and the backward flow heat radiation structure of coolant liquid can give off the absorptive heat of coolant liquid fast, realizes the cyclic utilization of coolant liquid, reaches the effect of continuous cycle cooling server.
Further, liquid cooling mechanism includes link, clamp, cooling tube and rectifier box, link difference fixed connection is in the support column upper end that is located same high transverse distribution, and the equal distance fixedly connected with clamp in surface around the link, the equal joint in holistic inside that is located the horizontal three clamp that corresponds of coplanar constitutes has the cooling tube, and the end of four cooling tubes all is linked together with the rectifier box opening of coplanar homonymy, can absorb the heat that the server produced, reaches the cooling server purpose.
Further, the clamp is including deciding the clamp, moving clamp and screw, decide the clamp respectively with set up in the front and back surface of link, decide that the front end of clamp all articulates through the hinge has and moves the clamp, inside the screw passed the through-hole that moves the clamp and decide the clamp rear end and set up respectively, decide the clamp and move whole and the cooling tube joint that the clamp constitutes, the lower extreme of screw extends to the outside of deciding the clamp, the equal threaded connection of lower extreme of screw has the nut, can install fixedly to the cooling tube.
Further, heat dissipation mechanism includes linker, heat dissipation tubule and connecting pipe, the number of linker is two, and two linkers are linked together through evenly distributed's heat dissipation tubule, and linker fixed connection on right side is in the left surface middle part of coolant liquid case, and the linker on right side is linked together with the coolant liquid case, and the left end of left linker is linked together through the lower extreme of connecting pipe with the drain pipe, can give off the absorptive heat of coolant liquid fast.
Furthermore, the cooling device further comprises a cooling fan, wherein the cooling fan is fixedly connected to the front side of the left surface of the cooling liquid tank, and the input end of the cooling fan is electrically connected with the output end of the control switch group, so that the cooling efficiency is improved.
Further, still include cooling fan, cooling fan fixed connection is in the upper surface rear side of frame plate respectively, and cooling fan all is located the rear side of server, and control switch group's output is connected to cooling fan's input electricity, reaches better radiating effect with the coolant liquid cooperation that flows.
Furthermore, the cooling pipe is a cooling copper pipe, and the heat dissipation tubule is a heat dissipation tubule pipe, so that the cooling liquid can better absorb or dissipate heat.
Compared with the prior art, the utility model has the beneficial effects that: this big data internet server's cooling device has following benefit:
1. regulate and control self priming pump and radiator fan operation through control switch group, carry the rectifier box on right side through the feed liquor pipe with the coolant liquid in the coolant liquid case, flow through the cooling tube by the rectifier box on right side again, at the in-process of coolant liquid cooling tube, can absorb the heat that the server work produced, reduce the temperature of server, reach the effect of cooling server, can realize better cooling effect simultaneously under cooling fan's cooperation, keep suitable distance and with the cooling tube design of air large tracts of land contact with the server, can absorb the heat high efficiency that the server produced when the coolant liquid flows through the cooling tube, guarantee good cooling effect.
2. Absorbed thermal coolant liquid is flowed by left rectifier box, in the drain pipe inflow heat dissipation mechanism, the coolant liquid evenly flows in the heat dissipation tubule through left linker, because heat dissipation tubule evenly distributed, make the coolant liquid heat radiating area who flows through in the heat dissipation tubule bigger, can dispel the absorptive heat of coolant liquid high-efficiently, under the high velocity air effect that radiator fan produced, the coolant liquid heat dissipation that flows through in making the heat dissipation tubule is more abundant, the rectifier box that accomplishes the coolant liquid rethread right side after the heat dissipation flows in the coolant liquid case, absorb the heat through the cooling tube once more under the effect of self-priming pump, can cool down the thermal coolant liquid fast of absorption, the cooling tube of flowing through once more, reach the purpose of circulative cooling server, the cost is reduced, personnel's participation dynamics has been reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the interior of the stent of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention;
fig. 4 is a schematic rear view of the present invention.
In the figure: 1 support, 2 frame plates, 3 servers, 4 support columns, 5 sucking discs, 6 liquid cooling mechanisms, 61 link, 62 clamps, 621 decide the clamp, 622 move the clamp, 623 screw, 63 cooling tube, 64 rectifier box, 7 cooling liquid boxes, 8 self priming pumps, 9 feed liquor pipes, 10 heat dissipation mechanisms, 101 linker, 102 heat dissipation tubule, 103 connecting pipe, 11 drain pipes, 12 radiator fan, 13 control switch group, 14 cooling fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present embodiment provides a technical solution: a cooling device of a big data internet server comprises a bracket 1, a liquid cooling mechanism 6 and a cooling liquid box 7;
the support 1: the rack plates 2 are fixedly connected with the inside of the rack plate at equal intervals, the support 1 and the rack plates 2 provide a basic support frame structure, the servers 3 are placed in the middle of the upper surface of the rack plates 2, the four corners of the upper surface of the rack plates 2 are adsorbed with the suckers 5, stable support is provided, the rack plates are convenient to detach and maintain, the upper ends of the suckers 5 are provided with the support columns 4, the support columns 4 provide connection support, the height of the support columns 4 is larger than that of the servers 3, and the rationality of structural design is guaranteed;
liquid cooling mechanism 6: the liquid cooling mechanism 6 comprises a connecting frame 61, clamps 62, cooling pipes 63 and a rectifier box 64, the connecting frame 61 is respectively and fixedly connected with the upper ends of the four support columns 4 which are positioned at the same height and transversely distributed, the clamps 62 are fixedly connected with the front surface and the rear surface of the connecting frame 61 at equal intervals, the cooling pipes 63 are respectively clamped in the whole of the three clamps 62 which are positioned at the same horizontal plane and transversely correspond, the cooling pipes 63 are cooling copper pipes, the heat exchange efficiency is improved, the ends of the four cooling pipes 63 are respectively communicated with the openings of the rectifier box 64 at the same side of the same plane, each clamp 62 comprises a fixed clamp 621, a movable clamp 622 and a screw 623, the fixed clamps 621 are respectively arranged on the front surface and the rear surface of the connecting frame 61, the front ends of the fixed clamps 621 are respectively hinged with the movable clamps 622 through hinges, and the screws 623 respectively penetrate through holes formed in the rear ends of the movable clamp 622 and the fixed clamps 621, the whole body formed by the fixed clamp 621 and the movable clamp 622 is clamped with the cooling pipe 63, the lower end of the screw 623 extends to the outside of the fixed clamp 621, the lower end of the screw 623 is in threaded connection with a nut, cooling liquid in the cooling liquid box 7 is conveyed to the right rectifying box 64 through the liquid inlet pipe 9, and then flows through the cooling pipe 63 through the right rectifying box 64, in the process that the cooling liquid flows through the cooling pipe 63, heat generated by the working of a server can be absorbed, the temperature of the server is reduced, the effect of cooling the server is achieved, then the cooling liquid absorbing the heat flows out from the left rectifying box 64, the whole body formed by the fixed clamp 621 and the movable clamp 622 is clamped with the cooling pipe 63 to support the cooling pipe 63, and meanwhile maintenance and replacement are facilitated;
cooling liquid tank 7: fixedly connected to the right bottom end of the bracket 1, the lower side of the right wall surface of the cooling liquid tank 7 is communicated with the liquid inlet of the self-priming pump 8 through a short pipe, the upper end of the self-priming pump 8 is respectively communicated with the right end of the liquid cooling pipeline mechanism 6 through a liquid inlet pipe 9, the bottom end of the left surface of the cooling liquid tank 7 is fixedly connected with a heat dissipation mechanism 10, the heat dissipation mechanism 10 comprises two intercommunicators 101, two heat dissipation tubules 102 and connecting pipes 103, the two intercommunicators 101 are communicated with each other through evenly distributed heat dissipation tubules 102, the intercommunicating device 101 on the right side is fixedly connected to the middle part of the left surface of the cooling liquid tank 7, the intercommunicating device 101 on the right side is communicated with the cooling liquid tank 7, the left end of the left intercommunicating device 101 is communicated with the lower end of the liquid outlet pipe 11 through the connecting pipe 103, the heat dissipation tubules 102 are heat dissipation tubules, the right end of the heat dissipation mechanism 10 is communicated with the cooling liquid tank 7, the left end of the heat dissipation mechanism 10 is communicated with the left end of the liquid cooling mechanism 6 through the liquid outlet pipe 11, the cooling liquid absorbing heat flows out of the rectifier box 64 on the left side and flows into the heat dissipation mechanism 10 through the liquid outlet pipe 11, the cooling liquid uniformly flows into the heat dissipation tubules 102 through the connecting pipes 103 and the communicating vessels 101 on the left side, the heat dissipation tubules 102 are uniformly distributed, so that the heat dissipation area of the cooling liquid flowing through the heat dissipation tubules 102 is larger, the heat absorbed by the cooling liquid can be efficiently dissipated, the cooling liquid flowing through the heat dissipation tubules 102 can dissipate heat more sufficiently under the action of high-speed air flow generated by the heat dissipation fan 12, and the cooling liquid after heat dissipation flows into the cooling liquid box 7 through the communicating vessels 101 on the right side and the rectifier box 64 on the right side;
wherein: still include control switch group 13, control switch group 13 sets up in the front surface of left support 1, and external power source is connected to control switch group 13's input electricity, and control switch group 13's output electricity is connected the input of self priming pump 8, regulates and control the normal operating of each electrical apparatus.
Wherein: the cooling device further comprises a cooling fan 12, the cooling fan 12 is fixedly connected to the front side of the left surface of the cooling liquid tank 7, an input end of the cooling fan 12 is electrically connected with an output end of the control switch group 13, and under the action of high-speed airflow generated by the cooling fan 12, cooling liquid flowing through the cooling tubule 102 can dissipate heat more sufficiently and rapidly.
Wherein: still include cooling fan 14, cooling fan 14 is fixed connection in the upper surface rear side of frame plate 2 respectively, and cooling fan 14 all is located the rear side of server 3, accelerates the circulation of air under cooling fan 14's cooperation, can realize better cooling effect, and cooling fan 14's input electricity connection control switch group 13's output.
The working principle of the cooling device of the big data internet server provided by the utility model is as follows: the self-sucking pump 8, the heat radiation fan 12 and the cooling fan 14 are regulated and controlled by the control switch group 13 to operate, the self-sucking pump 8 works to convey the cooling liquid in the cooling liquid tank 7 to the rectifier box 64 on the right side through the liquid inlet pipe 9, then the cooling liquid flows through the cooling pipe 63 through the rectifier box 64 on the right side, in the process that the cooling liquid flows through the cooling pipe 63, the heat generated by the server work can be absorbed, the temperature of the server is reduced, the effect of cooling the server is achieved, then the cooling liquid absorbing the heat flows out of the rectifier box 64 on the left side and flows into the heat radiation mechanism 10 through the liquid outlet pipe 11, the cooling liquid uniformly flows into the heat radiation tubules 102 through the connecting pipe 103 and the communicating vessel 101 on the left side, as the heat radiation tubules 102 are uniformly distributed, the heat radiation area of the cooling liquid flowing through the heat radiation tubules 102 is larger, the heat absorbed by the cooling liquid can be efficiently radiated, under the action of high-speed airflow generated by the heat radiation fan 12, make the coolant liquid heat dissipation that flows through more abundant in the heat dissipation tubule 102, the coolant liquid rethread right side after the completion dispels the heat communicates in the liquid tank 7 with rectifier box 64 on right side, absorbs the heat through cooling tube 63 again under the effect of self priming pump 8, reaches the purpose of circulative cooling server, can realize better cooling effect under cooling fan 14's cooperation simultaneously.
It should be noted that the self-priming pump 8 disclosed in the above embodiment may be an MNY11-2D micro speed-regulating self-priming pump, the cooling fan 12 may be an AC25489 cooling fan, the cooling fan 14 may be an HD-20060 dc fan, and the control switch set is provided with switch buttons for controlling the on-off operations of the self-priming pump 8, the cooling fan 12, and the cooling fan 14 in a one-to-one correspondence.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (7)

1. A cooling device of big data internet server, its characterized in that: comprises a bracket (1), a liquid cooling mechanism (6) and a cooling liquid box (7);
stent (1): the server rack is characterized in that rack plates (2) are fixedly connected with the inside of the server rack at equal intervals, servers (3) are placed in the middle of the upper surface of each rack plate (2), suckers (5) are adsorbed at four corners of the upper surface of each rack plate (2), supporting columns (4) are arranged at the upper ends of the suckers (5), and the heights of the supporting columns (4) are larger than the heights of the servers (3);
liquid cooling mechanism (6): the upper ends of the four supporting columns (4) are fixedly connected at the same height;
coolant tank (7): the cooling device is fixedly connected to the bottom end of the right side of the support (1), the lower side of the right wall face of the cooling liquid tank (7) is communicated with a liquid inlet of the self-priming pump (8) through a short pipe, the upper end of the self-priming pump (8) is respectively communicated with the right end of the liquid cooling mechanism (6) through a liquid inlet pipe (9), the bottom end of the left surface of the cooling liquid tank (7) is fixedly connected with a heat dissipation mechanism (10), the right end of the heat dissipation mechanism (10) is communicated with the cooling liquid tank (7), and the left end of the heat dissipation mechanism (10) is communicated with the left end of the liquid cooling mechanism (6) through a liquid outlet pipe (11);
wherein: still include control switch group (13), control switch group (13) set up in the front surface of left support (1), and external power source is connected to the input electricity of control switch group (13), and the input of self priming pump (8) is connected to the output electricity of control switch group (13).
2. The cooling apparatus of a big data internet server as claimed in claim 1, wherein: liquid cooling mechanism (6) are including link (61), clamp (62), cooling tube (63) and rectifier box (64), link (61) fixed connection respectively is in support column (4) upper end that is located same high transverse distribution, and the equal equidistance fixedly connected with clamp (62) of the preceding rear surface of link (61), and the equal joint in holistic inside that three clamp (62) that are located the horizontal correspondence of coplanar are constituteed has cooling tube (63), and the end of four cooling tubes (63) all is linked together with rectifier box (64) opening of coplanar homonymy.
3. The cooling apparatus of a big data internet server as claimed in claim 2, wherein: clamp (62) including deciding clamp (621), moving clamp (622) and screw (623), decide clamp (621) respectively with set up in the front and back surface of link (61), the front end of deciding clamp (621) all hinges through the hinge and has moves clamp (622), inside screw (623) passed the through-hole of moving clamp (622) and deciding clamp (621) rear end and seting up respectively, decide clamp (621) and move the whole and cooling tube (63) joint that clamp (622) are constituteed, the lower extreme of screw (623) extends to the outside of deciding clamp (621), the equal threaded connection of lower extreme of screw (623) has the nut.
4. The cooling apparatus of a big data internet server as claimed in claim 2, wherein: heat dissipation mechanism (10) are including linker (101), heat dissipation tubule (102) and connecting pipe (103), the number of linker (101) is two, and two linker (101) are linked together through evenly distributed's heat dissipation tubule (102), linker (101) fixed connection on right side in the middle part of the left surface of coolant liquid case (7), and linker (101) on right side are linked together with coolant liquid case (7), and the left end of left linker (101) is linked together through the lower extreme of connecting pipe (103) and drain pipe (11).
5. The cooling apparatus of a big data internet server as claimed in claim 1, wherein: the cooling system is characterized by further comprising a cooling fan (12), wherein the cooling fan (12) is fixedly connected to the front side of the left surface of the cooling liquid box (7), and the input end of the cooling fan (12) is electrically connected with the output end of the control switch group (13).
6. The cooling apparatus of a big data internet server as claimed in claim 1, wherein: still include cooling fan (14), cooling fan (14) fixed connection is in the upper surface rear side of frame plate (2) respectively, and cooling fan (14) all are located the rear side of server (3), and the output of control switch group (13) is connected to the input electricity of cooling fan (14).
7. The cooling apparatus of a big data internet server as claimed in claim 4, wherein: the cooling pipe (63) is a cooling copper pipe, and the heat dissipation tubule (102) is a heat dissipation tubule pipe.
CN202122356658.4U 2021-09-28 2021-09-28 Cooling device of big data internet server Active CN215769646U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122356658.4U CN215769646U (en) 2021-09-28 2021-09-28 Cooling device of big data internet server

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122356658.4U CN215769646U (en) 2021-09-28 2021-09-28 Cooling device of big data internet server

Publications (1)

Publication Number Publication Date
CN215769646U true CN215769646U (en) 2022-02-08

Family

ID=80091733

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122356658.4U Active CN215769646U (en) 2021-09-28 2021-09-28 Cooling device of big data internet server

Country Status (1)

Country Link
CN (1) CN215769646U (en)

Similar Documents

Publication Publication Date Title
CN204331597U (en) A kind of high-efficient heat-dissipating computer host box
CN209267461U (en) A kind of photovoltaic apparatus inverter radiator convenient for disassembly and assembly
CN215769646U (en) Cooling device of big data internet server
CN218162398U (en) Heat dissipation device for photovoltaic power generation
CN105268112A (en) Water cooling device for photon therapeutic device LED chip
CN210226043U (en) Automatic change heat abstractor for equipment
CN112123723A (en) Cooling system of injection mold
CN208258275U (en) A kind of telecommunication apparatus heat-pipe radiator
CN220795788U (en) Computer motherboard with cooling function
CN220797587U (en) Low-voltage reactive compensation device for water cooling circulation cooling
CN215582425U (en) Electronic component mounting box using liquid cooling plate
CN220703516U (en) Float glass production tin bath with small vertical temperature difference
CN220191295U (en) Novel SVG fault refinement processing chain link board card
CN220543906U (en) Semiconductor module cooling device
CN213214035U (en) Control protection device for flexible direct current transmission
CN216522596U (en) Water chilling unit for polyurethane production
CN212781923U (en) Water-cooling heat dissipation device
CN220971186U (en) Gantry bent cap skeleton piece welding robot development host computer
CN218100128U (en) Server liquid cooling heat abstractor
CN220733261U (en) Server cabinet with water cooling and heat dissipation functions
CN217766211U (en) Electrophoresis tank with circulation heat-transfer device
CN219200080U (en) Water circulation device of cooling tower for electromechanical engineering
CN216792827U (en) Computer system integrated control device with intelligent cooling mechanism
CN221008208U (en) Liquid cooling heat dissipation mechanism of server
CN220992231U (en) Multifunctional medical waste turnover box disinfection and cleaning system

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant