CN202799552U - Double-driving heat pipe heat dissipation cabinet - Google Patents
Double-driving heat pipe heat dissipation cabinet Download PDFInfo
- Publication number
- CN202799552U CN202799552U CN 201220506427 CN201220506427U CN202799552U CN 202799552 U CN202799552 U CN 202799552U CN 201220506427 CN201220506427 CN 201220506427 CN 201220506427 U CN201220506427 U CN 201220506427U CN 202799552 U CN202799552 U CN 202799552U
- Authority
- CN
- China
- Prior art keywords
- freon
- communicated
- heat
- operated valve
- electromagnetically operated
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a double-driving heat pipe heat dissipation cabinet, comprising a cabinet body and a heat dissipation device connected with the cabinet body. The cabinet body comprises a body and a back box at the rear side of the body, the back box is communicated with a Freon input pipe and a Freon output pipe, and a heat dissipation pipe communicated with the Freon input pipe and the Freon output pipe is arranged in the back box; the heat dissipation device comprises a gas-liquid separation device, a compressor, a heat exchanger, a reservoir and a drying filter communicated orderly, and the drying filter is communicated with a fluorine pump and a throttling mechanism separately, wherein the gas-liquid separation device is communicated with the Freon output pipe, and the fluorine pump and the throttling mechanism are communicated with the Freon input pipe simultaneously; the in and out pipes of the compressor, the in and out pipes of the fluorine pump and the in and out pipes of the throttling mechanism are equipped with solenoid valves respectively, the in and out pipes of the compressor are communicated with a bypass pipeline on which a solenoid valve is arranged, and a pressure sensor is arranged in the heat exchanger.
Description
Technical field
The utility model relates to a kind of radiating cabinet, two heat pipe heat radiation racks that drive that especially a kind of electronic information machine room of good heat dissipation effect is used.
Background technology
Along with the development of the communications industry, the social informatization degree improves constantly, and no matter is that common carrier or government, enterprise etc. all need to build a large amount of electronic information machine rooms.Particularly along with the development of the technology such as Internet of Things, cloud computing, need a large amount of electronic information machine rooms as base support.In order to improve the utilance of electronic information machine room, in recent years, the Single Cabinet power of electronic information machine room continues to increase, and along with the increasing of Single Cabinet power, also so that technical bottleneck has appearred in traditional special air conditioning for device room.Be mainly manifested in: (1) adopts traditional special air conditioning for device room air supply mode because electronic information machine room Single Cabinet power is excessive, no matter is upper air-supply or lower air-supply, all is prone to machine room local overheating phenomenon.(2) because Single Cabinet power is excessive, certainly will needs to dispose more special air conditioning for device room, and no matter adopt single-sided arrangement or bilateral arrangement, all be difficult to install the air-conditioning of requirement.
Because these technical bottlenecks of traditional special air conditioning for device room are needed a kind of new technology of research and development badly, can adapt to the development trend of the high-power Single Cabinet of this electronic information machine room.
The utility model content
The utility model purpose: technical problem to be solved in the utility model is the deficiency that exists in high-power Single Cabinet electronic information machine room for special air conditioning for device room in the prior art, and a kind of two heat pipe heat radiation rack that drives is provided.
In order to solve the problems of the technologies described above, the utility model discloses a kind of two heat pipe heat radiation rack that drives, comprise cabinet and the heat abstractor that is connected cabinet; Described cabinet comprises the back of the body case of body and body rear side, is communicated with freon input pipe and freon efferent duct on the back of the body case, is provided with the radiating tube that is communicated with freon input pipe and freon efferent duct in the back of the body case;
Described heat abstractor comprises gas-liquid separator, compressor, the heat exchanger that is communicated with successively, and reservoir, and reservoir is communicated with respectively fluorine pump and throttle mechanism; Wherein gas-liquid separator is communicated with the freon efferent duct, and fluorine pump and throttle mechanism are communicated with the freon input pipe simultaneously;
Described compressor on pipeline, an electromagnetically operated valve is set respectively;
Described fluorine pump on pipeline, an electromagnetically operated valve is set respectively;
Described throttle mechanism on pipeline, an electromagnetically operated valve is set respectively;
Described compressor on pipeline, be communicated with a bypass duct, pipeline is provided with an electromagnetically operated valve;
Be provided with pressure sensor in the described heat exchanger.
In the utility model, described heat exchanger is connected with fan.
In the utility model, described heat exchanger is connected with water pump and cooling tower.
In the utility model, described throttle mechanism is expansion valve.
In the utility model, connect device for drying and filtering behind the described reservoir, reservoir is communicated with respectively fluorine pump and throttle mechanism by device for drying and filtering.
The two compressors that drive the heat pipe heat radiation rack of the utility model are connected with the fluorine parallel connection of pumps, connect respectively an electromagnetically operated valve at compressor into and out of pipeline, be provided with pressure sensor in heat exchanger, the condensing pressure that causes according to the variation of outdoor temperature changes compressor into and out of the open and close of the electromagnetically operated valve of pipeline and the work of compressor and fluorine pump.The liquid pipe that described two driving heat pipe heat radiation rack is connected with the back of the body case of heat pipe heat radiation rack has two arms, and an arm only has controlled valve, opens (closing during compressor operating work) during the work of fluorine pump operation; An arm throttle mechanism, the throttle mechanism two ends are provided with controlled valve, and valve is opened (closing during the work of fluorine pump operation) when compressor operating is worked.Electronic message unit carries the air-out direction of blower fan over against the back side, and liquid freon evaporates and absorb the heat that electronic message unit distributes in heat pipe rack back of the body case.
Pipe interior of the present utility model is full of freon working medium.
The utility model specific works operational mode is as follows:
(1) when outdoor temperature is low, described fluorine pump operation work, compressor quits work.Freon working medium is under the effect of fluorine pump, enter heat exchanger, with the outdoor air heat exchange, because outside air temperature is lower, freon is condensed, heat drains into outdoor, and freon becomes gas-liquid mixture, and partially liq freon is stored in the reservoir, partially liq freon enters rack back of the body case, carry at electronic message unit under the hot blast effect of blower fan, freon evaporates in rack back of the body case, and absorbs the heat that distributes of electronic message unit.Gaseous fluorine Leon after the evaporation is back to again outdoor heat exchanger and outdoor air heat exchange, circular flow.
(2) when outdoor temperature is higher, switch by electromagnetically operated valve, compressor operating work, the fluorine pump quits work.Freon working medium is compressed to the gas of HTHP in compressor, then carry out condensation by heat exchanger, heat is discharged to outdoor, freon becomes gas-liquid mixture, and operative liquid freon is stored in the reservoir, and partially liq freon is after the throttle mechanism step-down, enter rack back of the body case, carry at electronic message unit under the effect of blower fan hot blast, freon evaporates in rack back of the body case, and absorbs the heat that electronic message unit distributes.Gas freon is back to compressor under the effect of compressor, circular flow.
(3) described electromagnetically operated valve switching mode changes according to the pressure in the freon condenser, and control is finished automatically.Also namely during by high step-down, can automatically switch to the fluorine pump operation by compressor in outdoor temperature.On the contrary, then switch to compressor operating by the fluorine pump.
Beneficial effect: the utlity model has following advantage: (1) the utility model patent has solved the heat dissipation problem of high-power rack, has avoided the local overheating problem of using traditional special air conditioning for device room mode to bring.
(2) use of the utility model patent in machine room can significantly improve the Single Cabinet installed power, improves the machine room utilance with this.
(3) when outdoor temperature is lower than the cabinet equipment temperature of outgoing air, also can utilize heat pipe that rack is carried out direct cooling, decrease machine room operation energy consumption.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is done further to specify, above-mentioned and/or otherwise advantage of the present utility model will become apparent.
Fig. 1 two a kind of execution modes that drive the heat pipe heat radiation rack described in the utility model.
Fig. 2 two another kind of execution modes that drive the heat pipe heat radiation rack described in the utility model.
Fig. 3 is cabinet body separation structure schematic diagram in the utility model.
Embodiment
The utility model discloses a kind of two heat pipe heat radiation rack that drives, comprise cabinet and the heat abstractor that is connected cabinet; Described cabinet comprises the back of the body case of body and body rear side, is communicated with freon input pipe and freon efferent duct on the back of the body case, is provided with the radiating tube that is communicated with freon input pipe and freon efferent duct in the back of the body case; Described heat abstractor comprises gas-liquid separator, compressor, the heat exchanger that is communicated with successively, and reservoir and device for drying and filtering, device for drying and filtering are communicated with respectively fluorine pump and throttle mechanism; Wherein gas-liquid separator is communicated with the freon efferent duct, and fluorine pump and throttle mechanism are communicated with the freon input pipe simultaneously; Described compressor on pipeline, an electromagnetically operated valve is set respectively; Described fluorine pump on pipeline, an electromagnetically operated valve is set respectively; Described throttle mechanism on pipeline, an electromagnetically operated valve is set respectively; Described compressor on pipeline, be communicated with a bypass duct, pipeline is provided with an electromagnetically operated valve; Be provided with pressure sensor in the described heat exchanger.
Described heat exchanger is connected with fan.Perhaps described heat exchanger is connected with water pump and cooling tower.Described throttle mechanism is expansion valve.
As shown in Figure 1, compressor 1 and fluorine pump 2 are connected in the pipe-line system, but switch isolated operation compressor or fluorine pump by valve.Compressor 1 is imported and exported and is provided with electromagnetically operated valve 10a, electromagnetically operated valve 10b, wherein electromagnetically operated valve 10a control into, electromagnetically operated valve 10b controls out.The bypass line that compressor 1 is imported and exported is provided with electromagnetically operated valve 9, and bypass line is arranged on electromagnetically operated valve 10a, the electromagnetically operated valve 10b outside, not controlled by electromagnetically operated valve 10a, electromagnetically operated valve 10b.Fluorine pump 2 is imported and exported and is provided with electromagnetically operated valve 13a, electromagnetically operated valve 13b, and wherein electromagnetically operated valve 13a controls out, electromagnetically operated valve 13b control into.The bypass pipe that fluorine pump 2 is imported and exported is provided with electromagnetically operated valve 14a, electromagnetically operated valve 14b, be provided with throttle mechanism 15 between electromagnetically operated valve 14a and the electromagnetically operated valve 14b, throttle mechanism 15 adopts expansion valve, electromagnetically operated valve 14a and electromagnetically operated valve 14b and electromagnetically operated valve 13a and the separate control of electromagnetically operated valve 13b.In heat exchanger 3, be provided with the freon pressure sensor, control the open and close of electromagnetically operated valve 9, electromagnetically operated valve 10a, electromagnetically operated valve 10b, electromagnetically operated valve 13a, electromagnetically operated valve 13b and electromagnetically operated valve 14a, electromagnetically operated valve 14b by the variation of freon condensing pressure.
When outdoor temperature was low, condensing pressure was lower, and electromagnetically operated valve 10a, electromagnetically operated valve 10b close at this moment, and electromagnetically operated valve 9 is opened, and electromagnetically operated valve 13a and electromagnetically operated valve 13b open, and electromagnetically operated valve 14a and electromagnetically operated valve 14b close, and freon working medium is by the 2 operation periodic duties of fluorine pump.The gaseous fluorine Leon enters in the heat exchanger 3, with the outdoor air heat exchange, because outdoor temperature is lower, after being condensed, the gaseous fluorine Leon becomes gas-liquid mixture, operative liquid freon is stored in the reservoir 5, the device for drying and filtering 6 of moisture in the system after by reservoir 5 absorbs, operative liquid freon enters fluorine pump 2, enter in the heat pipe heat radiation rack 7 by freon input pipe 11, freon evaporates behind the absorbing heat in heat pipe heat radiation rack 7 and becomes gaseous state, is back to heat exchanger 3 by freon efferent duct 12 and carries out circular flow.
When outdoor temperature was higher, condensing pressure was higher, and electromagnetically operated valve 10a, electromagnetically operated valve 10b open at this moment, and electromagnetically operated valve 9 cuts out, and electromagnetically operated valve 13a and electromagnetically operated valve 13b close, and electromagnetically operated valve 14a and electromagnetically operated valve 14b open, and freon working medium is by the compressor operating periodic duty.The gaseous fluorine Leon is compressed to the gas of HTHP in compressor 1, enter in the heat exchanger 3, after being condensed, the gaseous fluorine Leon becomes gas-liquid mixture, operative liquid freon is stored in the reservoir 5, the device for drying and filtering of moisture in the system after by reservoir absorbs, after 15 step-downs of operative liquid freon process throttle mechanism, enter in the heat pipe heat radiation rack 7 by freon input pipe 11, freon evaporates behind the absorbing heat in the heat pipe heat radiation rack and becomes gaseous state, is back to compressor 1 circular flow by freon efferent duct 12.Evaporating temperature by control freon makes it be higher than dew point temperature, does not therefore produce condensate.How much can mating flexibly according to the heat dissipation capacity of electronic message unit and the amount of capacity of unit of the quantity of freon input pipe (liquid pipe) 11 and freon efferent duct (tracheae) 12 and series winding heat pipe heat radiation rack, series winding is that 3 heat pipe heat radiation racks only are signal among Fig. 1, it is more to contact, and also can contact still less.
Fig. 3 is the detailed structural map of heat pipe heat radiation rack 7.Freon pipeline (liquid pipe) 11 is connected tracheae with the freon pipeline) 12 be connected with the import and export of heat pipe heat radiation rack 7 respectively.Rack 7b and rack main entrance that heat pipe heat radiation rack 7 is deposited by heat pipe rack back of the body case 7a, electronic message unit form.Freon pipeline (liquid pipe) 11 and freon pipeline (tracheae) 12 namely are connected on the import and export of heat pipe rack back of the body case 7a.The liquid fluorine Leon enters the rack back of the body case that heat pipe is made, carrying fan at electronic message unit discharges under the effect of hot blast, freon evaporates and absorbs the heat that electronic message unit distributes in heat pipe rack back of the body case, freon is gone out by the outlet of heat pipe rack back of the body case after becoming gaseous state, and be back in compressor 1 or the fluorine pump 2, with this circular flow.
Present embodiment has following advantage based on the shortcoming of prior art: (1) can solve the heat dissipation problem of high-power rack, avoids the machine room local overheating.(2) under the whole year most of outside air temperature condition (also namely when outdoor temperature is lower than the cabinet equipment temperature of outgoing air), can utilize heat pipe that rack is carried out direct cooling, decrease machine room operation energy consumption.(3) break through the technical bottleneck of the traditional machine room refrigeration modes refrigerating capacity deficiency of high density rack, can significantly improve the installed capacity of rack and the utilance of communication building.
This two heat pipe heat radiation rack that drives can be got rid of the heat that electronic message unit distributes well, avoid electronic message unit overheated, also can improve Single Cabinet power and machine room utilance, when outdoor temperature is lower than the cabinet equipment temperature of outgoing air, can utilize heat pipe that rack is carried out direct cooling, decrease machine room operation energy consumption.
As shown in Figure 2, the difference of embodiment 2 and embodiment 1 is 3 heat exchangers, and heat exchanger is freon-air heat exchanger among the Fig. 1 among the embodiment 1, so fan 4.Therefore heat exchanger is freon-water-to-water heat exchanger among Fig. 2 of present embodiment, needs external water pipe to dispel the heat by cooling tower, or adopts the mode such as atomizing spray to dispel the heat.
The utility model provides a kind of two heat pipe heat radiation rack that drives; method and the approach of this technical scheme of specific implementation are a lot; the above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.In the present embodiment not clear and definite each part all available prior art realized.
Claims (5)
1. two heat pipe heat radiation rack that drives is characterized in that, comprises cabinet and the heat abstractor that is connected cabinet; Described cabinet comprises the back of the body case of body and body rear side, is communicated with freon input pipe and freon efferent duct on the back of the body case, is provided with the radiating tube that is communicated with freon input pipe and freon efferent duct in the back of the body case;
Described heat abstractor comprises gas-liquid separator, compressor, the heat exchanger that is communicated with successively, and reservoir, and reservoir is communicated with respectively fluorine pump and throttle mechanism; Wherein gas-liquid separator is communicated with the freon efferent duct, and fluorine pump and throttle mechanism are communicated with the freon input pipe simultaneously;
Described compressor on pipeline, an electromagnetically operated valve is set respectively;
Described fluorine pump on pipeline, an electromagnetically operated valve is set respectively;
Described throttle mechanism on pipeline, an electromagnetically operated valve is set respectively;
Described compressor on pipeline, be communicated with a bypass duct, pipeline is provided with an electromagnetically operated valve;
Be provided with pressure sensor in the described heat exchanger.
2. a kind of two heat pipe heat radiation racks that drive according to claim 1 is characterized in that described heat exchanger is connected with fan.
3. a kind of two heat pipe heat radiation racks that drive according to claim 1 is characterized in that described heat exchanger is connected with water pump and cooling tower.
4. according to claim 2 or 3 described a kind of two heat pipe heat radiation racks that drive, it is characterized in that described throttle mechanism is expansion valve.
5. a kind of two heat pipe heat radiation racks that drive according to claim 1 is characterized in that connect device for drying and filtering behind the described reservoir, reservoir is communicated with respectively fluorine pump and throttle mechanism by device for drying and filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220506427 CN202799552U (en) | 2012-09-29 | 2012-09-29 | Double-driving heat pipe heat dissipation cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220506427 CN202799552U (en) | 2012-09-29 | 2012-09-29 | Double-driving heat pipe heat dissipation cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202799552U true CN202799552U (en) | 2013-03-13 |
Family
ID=47826714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220506427 Expired - Lifetime CN202799552U (en) | 2012-09-29 | 2012-09-29 | Double-driving heat pipe heat dissipation cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202799552U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869241A (en) * | 2012-09-29 | 2013-01-09 | 江苏省邮电规划设计院有限责任公司 | Double-drive heat pipe heat radiation cabinet |
| CN105430998A (en) * | 2014-09-22 | 2016-03-23 | 广东申菱环境系统股份有限公司 | Control method of fluorine-pump internal-circulation server cabinet heat radiation system |
| CN105451509A (en) * | 2014-09-22 | 2016-03-30 | 广东申菱环境系统股份有限公司 | Control method of fluorine-pump primary loop server cabinet heat radiation system |
| CN105517404A (en) * | 2014-09-22 | 2016-04-20 | 中国移动通信集团广东有限公司 | Fluorine pump circulating type primary refrigerant loop server cabinet heat dissipation system |
| CN105517405A (en) * | 2014-09-22 | 2016-04-20 | 广东申菱环境系统股份有限公司 | Control method of heat pipe internal circulation type server cabinet heat dissipation system |
| CN108571791A (en) * | 2018-04-28 | 2018-09-25 | 北京百度网讯科技有限公司 | A kind of air-conditioning system and its refrigerating method |
| CN110213949A (en) * | 2019-07-04 | 2019-09-06 | 香江科技股份有限公司 | Cabinet and cooling means for the heat dissipation of 5G BBU equipment pondization |
-
2012
- 2012-09-29 CN CN 201220506427 patent/CN202799552U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869241A (en) * | 2012-09-29 | 2013-01-09 | 江苏省邮电规划设计院有限责任公司 | Double-drive heat pipe heat radiation cabinet |
| CN105430998A (en) * | 2014-09-22 | 2016-03-23 | 广东申菱环境系统股份有限公司 | Control method of fluorine-pump internal-circulation server cabinet heat radiation system |
| CN105451509A (en) * | 2014-09-22 | 2016-03-30 | 广东申菱环境系统股份有限公司 | Control method of fluorine-pump primary loop server cabinet heat radiation system |
| CN105517404A (en) * | 2014-09-22 | 2016-04-20 | 中国移动通信集团广东有限公司 | Fluorine pump circulating type primary refrigerant loop server cabinet heat dissipation system |
| CN105517405A (en) * | 2014-09-22 | 2016-04-20 | 广东申菱环境系统股份有限公司 | Control method of heat pipe internal circulation type server cabinet heat dissipation system |
| CN105451509B (en) * | 2014-09-22 | 2018-06-15 | 广东申菱环境系统股份有限公司 | A kind of fluorine pumps the control method of a loop server cabinet cooling system |
| CN105517405B (en) * | 2014-09-22 | 2019-01-11 | 广东申菱环境系统股份有限公司 | A kind of control method of heat pipe internal-circulation type server cabinet cooling system |
| CN105517404B (en) * | 2014-09-22 | 2019-10-18 | 中国移动通信集团广东有限公司 | A kind of refrigerant loop server cabinet cooling system of fluorine pump circulation formula |
| CN108571791A (en) * | 2018-04-28 | 2018-09-25 | 北京百度网讯科技有限公司 | A kind of air-conditioning system and its refrigerating method |
| CN108571791B (en) * | 2018-04-28 | 2020-12-11 | 北京百度网讯科技有限公司 | Air conditioning system and refrigeration method thereof |
| CN110213949A (en) * | 2019-07-04 | 2019-09-06 | 香江科技股份有限公司 | Cabinet and cooling means for the heat dissipation of 5G BBU equipment pondization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202799552U (en) | Double-driving heat pipe heat dissipation cabinet | |
| CN102869241A (en) | Double-drive heat pipe heat radiation cabinet | |
| CN102359738B (en) | Heat pipe and refrigerating system combined energy transportation method | |
| CN102788392B (en) | A kind of heat pipe hot pump hybrid system | |
| CN102269466A (en) | Fresh air handling unit | |
| CN201733563U (en) | Air-conditioner system suitable for cabinets | |
| CN101532745A (en) | Energy-saving full-function refrigeration cycle system | |
| CN201522044U (en) | Dual-system air conditioning unit | |
| CN1309997C (en) | Energy accumulation type combustion gas and heat pump composite air-conditioning | |
| CN210070102U (en) | Ground pipe laying water source dehumidification humidification fresh air unit | |
| CN105916361B (en) | A kind of low consumption water spray type heat pipe heat radiation complete set of equipments suitable for communication cabinet | |
| CN104703452A (en) | Double-effect type server radiating device combining liquid cooling and compressor air cooling systems | |
| CN201016499Y (en) | Solar energy stepping utilization type air-conditioning system | |
| CN202149571U (en) | Fresh air handling unit | |
| CN201476397U (en) | Temperature-adjusting dehumidifier of water source heat pump | |
| CN203274348U (en) | Ultralow-temperature double-loop heat pump air-conditioning hot water machine | |
| CN2802386Y (en) | Gas heat pump combined air conditioner | |
| CN201213130Y (en) | Heat pipe/wind cooling composite heat radiating system used for large power thyristor | |
| CN203478742U (en) | Bidirectional throttling system of air-cooled heat pump unit | |
| CN203413743U (en) | Heat pipe and heat pump composite system | |
| CN102692054B (en) | Cooling and heating special unit of heat source tower | |
| CN203518091U (en) | Efficient energy-saving water-cooled module set | |
| CN204240481U (en) | A kind of Novel double-cold-source air-conditioning system | |
| CN203068704U (en) | Air guide direct evaporation split heat pipe exchanger | |
| CN203980701U (en) | A kind of superposing type air-source heating plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210006 Zhongshan South Road, Nanjing, Nanjing, Jiangsu Patentee after: CHINA INFORMATION CONSULTING & DESIGNING INSTITUTE Co.,Ltd. Address before: 210006 Zhongshan South Road, Nanjing, Nanjing, Jiangsu Patentee before: JIANGSU POSTS & TELECOMMUNICATIONS PLANNING AND DESIGNING INSTITUTE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |