CN101551149B - Heat exchange type intelligent machine room energy-saving system with a tunable wind-guiding structure - Google Patents
Heat exchange type intelligent machine room energy-saving system with a tunable wind-guiding structure Download PDFInfo
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- CN101551149B CN101551149B CN2009101068848A CN200910106884A CN101551149B CN 101551149 B CN101551149 B CN 101551149B CN 2009101068848 A CN2009101068848 A CN 2009101068848A CN 200910106884 A CN200910106884 A CN 200910106884A CN 101551149 B CN101551149 B CN 101551149B
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Abstract
The invention relates to a heat exchange type intelligent machine room energy-saving system with a tunable wind-guiding structure, which includes a heat exchanger and an air conditioner located in themachine room, and a control box fpr controlling the operation of the heat converter and air conditioner, an outer circulation air duct and an internal circulation air duct are provided on the heat co nverter, the outer circulation air duct includes an outer circulation air inlet and an outer circulation air outlet, the internal circulation air duct includes an internal circulation air inlet and aninternal circulation air outlet, the internal circulation air duct is provided with a wind-guiding structure for extending the air inlet and outlet distance. The invention has beneficial effects of p erforming scheduling linkage operation to the heat converter and air conditioner. Wind ingress and egress wind-guiding structures are mounted on the air inlet and outlet of the internal circulation air duct, so that the air inlet and outlet distance can be effectively extended, the internal circulation air duct satisfies the optimum heat sinking principle that hot air ingresses at top and the coldair sends out at bottom, simultaneously a centralized control system based on MODBUS bus of a pluratliy of heat converters are adopted, which facilitates the background monitoring of the heat sinking energy-saving system and the centralized dispatching of he heat converter operation.
Description
Technical field
The present invention relates to a kind of machine room heat dissipation, energy conservation system, refer more particularly to a kind of heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure.
Background technology
Along with the popularization of national energy-saving and emission-reduction, it is quite general to use heat exchanger to carry out the energy-conservation cooling system of machine room cooling.Heat exchanger general employing in machine room hung the wall installation in the heat dissipation, energy conservation system, and terrain clearance h 〉=0.6m highly mounts.According to the air flow principles, heat exchanger heat radiation optimal cases is that interior circulation should be sent cold wind in the end, the jacking hot blast, and interior circulation inlet and outlet need space out as far as possible.Heat exchanger is because the movement length restriction, vertical direction size L≤1.5m, and interior circulation inlet and outlet distance L 4≤1m, the wind direction of turnover wind is a horizontal direction.General communication machine room height H 〉=3m.Therefore circulation end air-supply in traditional heat exchanger can't be realized, jacking wind.And turnover wind air port distance is short partially, is easy to occur cold and hot wind short circuit phenomenon.
Present machine room exchange type energy conserving system and the big multipotency coordinated operation of air-conditioning are by the switch of control cabinet control heat exchanger and air-conditioning.But all be to have adopted contactor control air-conditioning switch, in installation process, need that it is cumbersome to construct in the interlock of existing energy conserving system and air-conditioning to air-conditioning cabling again.When contactor breaks down, will cause air conditioner in machine room not turn-off in addition, cause the interlock of heat exchanger and air-conditioning to be lost efficacy.
Machine room heat dissipation, energy conservation system is when using two above heat exchangers at present, and each heat exchanger is to work alone, when mounted the cabling more complicated.
Based on the weak point of above-mentioned existing machine room heat dissipation, energy conservation system, the inventor has designed the present invention's " heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure ".
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art technical problem to be solved is: a kind of heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure is provided.
The technical solution adopted for the present invention to solve the technical problems is:
Heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure, comprise the heat exchanger of being located in the machine room, air-conditioning and the control cabinet that is used to control heat exchanger and operation of air conditioner, be provided with outer circulating air duct and interior circulation air path in heat exchanger, outer circulating air duct comprises external circulation air inlet and outer circulation air outlet, interior circulation air path comprise in the circulation air inlet and in recycle the air port, circulation air path is equiped with the air guide structure that is used to prolong the air port distance in described, one end of air guide structure is communicated with interior circulation air path is airtight, the other end of air guide structure is an air guide hole, air guide structure be used for the interior circulation air inlet of circulation air path in the heat exchanger and in recycle the air port distance and draw back.
In described circulation air path in recycle the air port and be equiped with the air guide structure that is used to prolong the inlet and outlet distance, an end of air guide structure with in recycle that the air port is airtight to be communicated with, the other end of air guide structure is an air guide hole.Interior circulation air inlet is equiped with air guide structure, an end of air guide structure with in recycle that the air port is airtight to be communicated with, the other end of air guide structure is an air guide hole.
But described air guide structure is the working of plastics air guide structure of band spacing ripple glaze.Make in the air guide structure length certain limit adjustable by regulating the ripple spacing.
Described air guide hole air inducing angle can be in the horizontal direction 0 °～adjusts between 90 °, and,, realize best radiating effect to satisfy different building environments.General air guide hole is best air inducing angle Selection from the horizontal by 45.
Described control cabinet adopts the switch operation of infrared signal control air-conditioning.Adopt infrared signal control air-conditioning switch, need not transform original air-conditioning system, and the civilian air-conditioning of the self-starting that can be used for not sending a telegram here.Air-conditioning to the different brands model only need use respective remote control study once can control.And can control a plurality of air-conditionings simultaneously, satisfy the building environment of different air-conditioning configurations.The waveform that air-conditioner controller comes out by the infrared receiving circuit demodulation, the infrared signal of decodable code air-conditioning remote control is when accepting the start and stop instruction, by analog telecommand device instruction control air-conditioning; Adopt Hall element to detect the air-conditioning electric current and carry out the fault judgement, and many air-conditionings are carried out delayed startup with protection and prolongation air-conditioning life-span.
Described heat dissipation, energy conservation system is provided with two or two above heat exchangers, interconnects with twisted-pair feeder between each heat exchanger, is used to realize the monitoring of centralized Control and remote ethernet.Heat exchanger is equipped with the MODBUS interface circuit, the input of MODBUS interface circuit is connected with the communication output of microprocessor, the output of MODBUS interface circuit links to each other with tele-control system by the MODBUS bus, tele-control system is by the remote monitoring computer that is connected successively, control system microprocessor and MODBUS bus gateway are formed, MODBUS bus gateway links to each other with the output of MODBUS interface circuit by the MODBUS bus, adopting ethernet interface circuit to be connected between MODBUS bus gateway and the remote monitoring computer communicates, MODBUS bus gateway is by MODBUS bus access heat exchanger, the real time data of heat exchanger is sent to MODBUS bus gateway by the MODBUS bus, be sent to the remote monitoring computer through ethernet interface circuit then, simultaneously the remote monitoring computer by IE browser page or monitoring software in regular turn through ethernet interface circuit, MODBUS bus gateway and MODBUS bus are assigned control instruction to heat exchanger or are assigned the new parameter that is provided with, the operation of control heat exchanger.
Wherein the microprocessor in the heat exchanger is built-in with AD modular converter and CCP module, the AD modular converter connects temperature sensor and humidity sensor respectively by signal conditioning circuit, the microprocessor of heat exchanger system links to each other with inside and outside circulating fan by starting or stopping control circuit, be provided with pulse tachometer circuit and pulse wide modulation circuit between CCP module and the inside and outside circulating fan, according to the ambient parameter of temperature sensor and humidity sensor detection, via the operation and the speed governing of starting or stopping control circuit and the inside and outside circulating fan of pulse wide modulation circuit control.
MODBUS bus gateway connects one or more air-conditioner control systems by the MODBUS bus, air-conditioner control system comprises air-conditioning microprocessor and the air-conditioning that is connected, the air-conditioning microprocessor is connected with the MODBUS interface circuit, by the MODBUS interface circuit air-conditioner control system is suspended to the MODBUS bus.The air-conditioning microprocessor is provided with infrared receiving circuit, the air-conditioning microprocessor carries out air-conditioning control by the infrared signal that infrared receiving circuit reception air-conditioning remote control sends, also be provided with infrared emission circuit, power control circuit and Hall testing circuit between air-conditioning microprocessor and the air-conditioning, the infrared signal of the waveform decoder air-conditioning remote control that air-conditioner control system comes out by the infrared receiving circuit demodulation, when accepting the start and stop instruction, control air-conditioning by instruction of analog telecommand device and folding power control circuit; Adopt the Hall testing circuit to detect the air-conditioning electric current and carry out the fault judgement, and many air-conditionings are carried out delayed startup with protection and prolongation air-conditioning life-span.
Described MODBUS bus also is connected with man-machine interface by the MODBUS interface circuit, and man-machine interface is assigned the start and stop instruction by the MODBUS bus to each heat exchanger and air-conditioner control system, and heat exchanger and air-conditioning are dispatched coordinated operation.Every parameter set-point that heat exchanger sends according to the remote monitoring computer, or, bus control system is carried out the parameter setting by the keyboard input according to the man-machine interface that is connected on the MODBUS bus; Bus control system is according to each equipment running status, and utilization energy-saving distribution strategy is assigned the start and stop instruction by the MODBUS bus to each equipment, and heat exchanger and air-conditioning are dispatched coordinated operation.
The heat exchange type intelligent machine room energy-saving system beneficial effect that the present invention has tunable wind-guiding structure is:
1), the circulation air path inlet and outlet installs turnover wind air guide structure additional in the heat exchanger, can effectively draw back the inlet and outlet distance L, circulation inlet and outlet distance L 3 〉=2m in making.Satisfy the jacking hot blast, the best radiating principle of cold wind is sent at the end.
2), air guide structure length L 1, adjustable in the L2 certain limit, can adapt to different machine room heights, realize best radiating effect.
3), recommend and horizontal direction 45 turnover wind in the air guide structure air port up and down, also can between 0 °～90 °, adjust, to satisfy different building environments.
4), adopt infrared signal control air-conditioning switch, need not transform original air-conditioning system, and the civilian air-conditioning of the self-starting that can be used for not sending a telegram here.Air-conditioning to the different brands model only need use respective remote control study once can control.And can control a plurality of air-conditionings simultaneously, satisfy the building environment of different air-conditioning configurations.
5), in the time of at large-scale machine room many heat exchangers need being installed, cabling for convenience, multicomputer centralized Control and long-range background monitoring, this energy-conservation control system adopts the distributed intelligence control mode that connects based on the MODBUS fieldbus.Each heat exchanger only need use a twisted-pair feeder to interconnect can realize centralized Control and remote ethernet monitoring.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a heat exchanger overall structure front view of the present invention;
Fig. 2 is a heat exchanger overall structure left view of the present invention;
Fig. 3 is a heat exchanger overall structure rearview of the present invention;
Fig. 4 is the partial structurtes enlarged diagram of the I part among Fig. 3;
Fig. 5 is a communications equipment room overall structure schematic diagram of the present invention;
Fig. 6 is the control circuit principle sketch of heat exchanger;
Fig. 7 is the control circuit principle sketch of air-conditioning;
Fig. 8 is based on the machine room energy-saving system overall structure monitoring schematic diagram of MODBUS gateway.
Description of reference numerals:
10, heat exchanger 101, outer circulating air duct 1011, external circulation air inlet
1012, outer circulation air outlet 102, interior circulation air path 1021, air guide structure
1022, recycle air port 1023, interior circulation air inlet 1024, air guide structure in
But 1025 spacing ripple glazes
20, air-conditioning 30, communications equipment room 40, control cabinet
The specific embodiment
Referring to figs. 1 through Fig. 8, the present invention implements like this:
In Fig. 1 to Fig. 5, heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure, comprise the heat exchanger of being located in the communications equipment room 30 10, air-conditioning 20 and the control cabinet 40 that is used to control heat exchanger 10 and air-conditioning 20 operations, be provided with outer circulating air duct 101 and interior circulation air path 102 in heat exchanger 10, outer circulating air duct 101 comprises external circulation air inlet 1011 and outer circulation air outlet 1012, in interior circulation air path 102 comprises circulation air inlet 1023 and in recycle air port 1022, interior circulation air path 102 is equiped with the air guide structure that is used to prolong the air port distance, one end of air guide structure and interior 102 airtight connections of circulation air path, the other end of air guide structure is an air guide hole, air guide structure be used for the interior circulation air inlet 1023 of circulation air path in the heat exchanger 102 and in recycle air port 1022 distances and draw back.
In the present embodiment, the interior circulation air inlet 1023 of interior circulation air path 102 is equiped with air guide structure 1024, air guide structure 1024 and interior 1023 airtight connections of circulation air inlet.Recycle air port 1022 in the interior circulation air path 102 and be equiped with air guide structure 1021, air guide structure 1021 with in recycle 1022 airtight connections of air port.But air guide structure is the working of plastics air guide structure of band spacing ripple glaze 1025.Described air guide hole 10211 and air guide hole 10241 are all from the horizontal by 45.Control cabinet 40 adopts the switch operation of infrared signal control air-conditioning 20.
And the interior circulation air inlet in the heat exchanger 10 1023 and in recycle air port 1022 and install turnover wind air guide structure additional, in can effectively drawing back circulation air inlet 1023 and in recycle distance L 3 between the air port 1022, the inlet and outlet distance L 3 〉=2m of circulation air path 102 in making.Satisfy the jacking hot blast, the best radiating principle of cold wind is sent at the end.Adjustable in air guide structure length L 1 and the L2 certain limit in addition, can adapt to the different communication machine room height, realize best radiating effect.
In Fig. 5, be provided with two or two above heat exchangers 10 in the communications equipment room 30, interconnect with twisted-pair feeder between each heat exchanger 10, be used to realize the monitoring of centralized Control and remote ethernet.
At Fig. 6, among Fig. 7 and Fig. 8, heat exchanger 10 is equipped with the MODBUS interface circuit, the input of MODBUS interface circuit is connected with the communication output of microprocessor, the output of MODBUS interface circuit links to each other with tele-control system by the MODBUS bus, tele-control system is by the remote monitoring computer that is connected successively, control system microprocessor and MODBUS bus gateway are formed, MODBUS bus gateway links to each other with the output of MODBUS interface circuit by the MODBUS bus, be connected with ethernet interface circuit between MODBUS bus gateway and the remote monitoring computer and communicate, MODBUS bus gateway is by MODBUS bus access heat exchanger 10, the real time data of heat exchanger 10 is sent to MODBUS bus gateway by the MODBUS bus, be sent to the remote monitoring computer through ethernet interface circuit then, simultaneously the remote monitoring computer by IE browser page or monitoring software in regular turn through ethernet interface circuit, MODBUS bus gateway and MODBUS bus assign control instruction or assign the new parameter that is provided with for heat exchanger 10, the operation of control heat exchanger 10.
Wherein the microprocessor in the heat exchanger is built-in with AD modular converter and CCP module, the AD modular converter connects temperature sensor and humidity sensor respectively by signal conditioning circuit, the microprocessor of heat exchanger system links to each other with inside and outside circulating fan by starting or stopping control circuit, be provided with pulse tachometer circuit and pulse wide modulation circuit between CCP module and the inside and outside circulating fan, according to the ambient parameter of temperature sensor and humidity sensor detection, via the operation and the speed governing of starting or stopping control circuit and the inside and outside circulating fan of pulse wide modulation circuit control.
MODBUS bus gateway connects one or more air-conditioner control systems by the MODBUS bus, air-conditioner control system comprises air-conditioning microprocessor and the air-conditioning that is connected, the air-conditioning microprocessor is connected with the MODBUS interface circuit, by the MODBUS interface circuit air-conditioner control system is suspended to the MODBUS bus.The air-conditioning microprocessor is provided with infrared receiving circuit, the air-conditioning microprocessor carries out air-conditioning control by the infrared signal that infrared receiving circuit reception air-conditioning remote control sends, also be provided with infrared emission circuit, power control circuit and Hall testing circuit between air-conditioning microprocessor and the air-conditioning, the infrared signal of the waveform decoder air-conditioning remote control that air-conditioner control system comes out by the infrared receiving circuit demodulation, when accepting the start and stop instruction, control air-conditioning by instruction of analog telecommand device and folding power control circuit; Adopt the Hall testing circuit to detect the air-conditioning electric current and carry out the fault judgement, and many air-conditionings are carried out delayed startup with protection and prolongation air-conditioning life-span.
The MODBUS bus also is connected with man-machine interface by the MODBUS interface circuit, and man-machine interface is assigned the start and stop instruction by the MODBUS bus to each heat exchanger 10 and air-conditioner control system, and heat exchanger 10 and air-conditioning 20 are dispatched coordinated operation.
The above, it only is the heat exchange type intelligent machine room energy-saving system preferred embodiment that the present invention has tunable wind-guiding structure, be not that technical scope of the present invention is imposed any restrictions, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention above any trickle modification, equivalent variations and modification that embodiment did.
Claims (9)
1. the heat exchange type intelligent machine room energy-saving system that has tunable wind-guiding structure, comprise the heat exchanger of being located in the communications equipment room (30) (10), air-conditioning (20) and being used to is controlled the control cabinet (40) of heat exchanger (10) and air-conditioning (20) operation, be provided with outer circulating air duct (101) and interior circulation air path (102) in heat exchanger (10), outer circulating air duct (101) comprises external circulation air inlet (1011) and outer circulation air outlet (1012), interior circulation air path (102) comprise in circulation air inlet (1023) and in recycle air port (1022), it is characterized in that: circulation air path (102) but be equiped with is used to prolong the working of plastics air guide structure of air port distance and band spacing ripple glaze (1025) in described, one end of air guide structure and airtight connection of interior circulation air path (102), the other end of air guide structure is an air guide hole, air guide structure be used for the interior circulation air inlet (1023) of circulation air path in the heat exchanger (102) and in recycle air port (1022) distance and draw back.
2. the heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure according to claim 1, the interior circulation air inlet (1023) that it is characterized in that described interior circulation air path (102) is equiped with air guide structure (1024), air guide structure (1024) and airtight connection of interior circulation air inlet (1023).
3. the heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure according to claim 1, it is characterized in that described in circulation air path (102) in recycle air port (1022) and be equiped with air guide structure (1021), air guide structure (1021) with in recycle airtight connection of air port (1022).
4. the heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure according to claim 1, it is characterized in that described in circulation air path (102) in recycle air port (1022) and be equiped with the air guide structure (1021) that is used to prolong the inlet and outlet distance, one end of air guide structure (1021) with in recycle airtight connection of air port (1022), the other end of air guide structure (1021) is air-out air guide hole (10211), interior circulation air inlet (1023) is equiped with air guide structure (1024), one end of air guide structure (1024) with in recycle airtight connection of air port (1023), the other end of air guide structure (1024) is air intake air guide hole (10241).
5. the heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure according to claim 4 is characterized in that described air-out air guide hole (10211) and air intake air guide hole (10241) are from the horizontal by 45.
6. the heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure according to claim 1 is characterized in that described control cabinet (40) adopts the switch operation of infrared signal control air-conditioning (20).
7. the heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure according to claim 1, it is characterized in that being provided with in the described communications equipment room (30) at least two heat exchangers (10), each heat exchanger interconnects with twisted-pair feeder between (10), is used to realize the monitoring of centralized Control and remote ethernet.
8. the heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure according to claim 7, it is characterized in that described heat exchanger (10) is equipped with the MODBUS interface circuit, microprocessor communication output in the input of MODBUS interface circuit and the heat exchanger is connected, the output of MODBUS interface circuit links to each other with tele-control system by the MODBUS bus, tele-control system is by the remote monitoring computer that is connected successively, control system microprocessor and MODBUS bus gateway are formed, MODBUS bus gateway links to each other with the output of MODBUS interface circuit by the MODBUS bus, adopting ethernet interface circuit to be connected between MODBUS bus gateway and the remote monitoring computer communicates, MODBUS bus gateway is by MODBUS bus access heat exchanger (10), the real time data of heat exchanger (10) is sent to MODBUS bus gateway by the MODBUS bus, be sent to the remote monitoring computer through ethernet interface circuit then, simultaneously the remote monitoring computer by IE browser page or monitoring software in regular turn through ethernet interface circuit, MODBUS bus gateway and MODBUS bus assign control instruction or assign the new parameter that is provided with for heat exchanger (10), the operation of control heat exchanger (10).
9. the heat exchange type intelligent machine room energy-saving system with tunable wind-guiding structure according to claim 8, it is characterized in that described MODBUS bus also is connected with man-machine interface by the MODBUS interface circuit, man-machine interface is assigned the start and stop instruction by the MODBUS bus to each heat exchanger (10) and air-conditioner control system, and heat exchanger (10) and air-conditioning (20) are dispatched coordinated operation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101068848A CN101551149B (en) | 2009-04-24 | 2009-04-24 | Heat exchange type intelligent machine room energy-saving system with a tunable wind-guiding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101068848A CN101551149B (en) | 2009-04-24 | 2009-04-24 | Heat exchange type intelligent machine room energy-saving system with a tunable wind-guiding structure |
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| Publication Number | Publication Date |
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| CN101551149A CN101551149A (en) | 2009-10-07 |
| CN101551149B true CN101551149B (en) | 2011-11-30 |
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| CN2009101068848A Expired - Fee Related CN101551149B (en) | 2009-04-24 | 2009-04-24 | Heat exchange type intelligent machine room energy-saving system with a tunable wind-guiding structure |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221244A (en) * | 2010-04-13 | 2011-10-19 | 台达电子工业股份有限公司 | Conditioning unit and applicable conditioning system thereof |
| CN102901184A (en) * | 2011-07-27 | 2013-01-30 | 青岛高校信息产业有限公司 | Remote air conditioner monitor |
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| US6247526B1 (en) * | 1998-11-19 | 2001-06-19 | Denso Corporation | Cooling device with arrangement of centrifugal fan |
| CN2849538Y (en) * | 2005-11-21 | 2006-12-20 | 深圳市英维克科技有限公司 | Heat exchange energy saver |
| CN201196467Y (en) * | 2008-01-31 | 2009-02-18 | 深圳市中兴新地通信器材有限公司 | Novel heat exchanger |
| CN201196468Y (en) * | 2008-01-31 | 2009-02-18 | 深圳市中兴新地通信器材有限公司 | Novel high power heat exchanger |
| CN201421153Y (en) * | 2009-04-24 | 2010-03-10 | 深圳市中兴新地通信器材有限公司 | Centralized control energy-saving system for multiple heat-exchange units of telecommunication room |
-
2009
- 2009-04-24 CN CN2009101068848A patent/CN101551149B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6247526B1 (en) * | 1998-11-19 | 2001-06-19 | Denso Corporation | Cooling device with arrangement of centrifugal fan |
| CN2849538Y (en) * | 2005-11-21 | 2006-12-20 | 深圳市英维克科技有限公司 | Heat exchange energy saver |
| CN201196467Y (en) * | 2008-01-31 | 2009-02-18 | 深圳市中兴新地通信器材有限公司 | Novel heat exchanger |
| CN201196468Y (en) * | 2008-01-31 | 2009-02-18 | 深圳市中兴新地通信器材有限公司 | Novel high power heat exchanger |
| CN201421153Y (en) * | 2009-04-24 | 2010-03-10 | 深圳市中兴新地通信器材有限公司 | Centralized control energy-saving system for multiple heat-exchange units of telecommunication room |
Non-Patent Citations (1)
| Title |
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| JP特开平10-206046A 1998.08.07 |
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Address after: 518000, Zhongxing new industrial park, 1 new head road, Bantian street, Longgang District, Guangdong, Shenzhen Patentee after: SINDI TECHNOLOGIES CO.,LTD. Address before: 518129, A workshop, B workshop and C workshop, No. 1, new road, gang tou community, Bantian street, Longgang District, Shenzhen, Guangdong Patentee before: Shenzhen Zhongxing Xindi Telecom Equipment Ltd. |
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Granted publication date: 20111130 |