CN203880855U - Circulation heat exchange energy-saving device outside communication machine room - Google Patents
Circulation heat exchange energy-saving device outside communication machine room Download PDFInfo
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- CN203880855U CN203880855U CN201420185513.XU CN201420185513U CN203880855U CN 203880855 U CN203880855 U CN 203880855U CN 201420185513 U CN201420185513 U CN 201420185513U CN 203880855 U CN203880855 U CN 203880855U
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- air
- cold air
- machine room
- cold
- air duct
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/54—Free-cooling systems
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Abstract
The utility model discloses a circulation heat exchange energy-saving device outside a communication machine room. A heat exchanger is arranged on the rear outer side of the machine room, a cooling radiating pipeline is arranged in a frame of the heat exchanger, and a cold air collecting box is arranged on the left side of the heat exchanger. A left cold air channel and a right cold air channel are arranged on an air outlet of the cold air collecting box. Communication network equipment is arranged in the machine room, an air conditioner is arranged on the rear side of the communication network equipment, and a ground groove is formed in the bottom end of the air conditioner. Cold air channel grooves are formed in the bottom end of the communication network equipment, and cold air inlet mesh plates are arranged at the upper ends of the cold air channel grooves. A cold air outlet hole is formed in the upper end of the communication network equipment, and a cold air pool is arranged in the ground groove in the bottom end of the air conditioner. The cold air channel grooves are sequentially connected with the cold air pool, an exhaust fan is arranged at the right end of a hot air box, an exhaust pipeline is arranged on the right side of the exhaust fan, and an air suction opening of the exhaust pipeline is mounted in the machine room. A temperature controller is arranged in the machine room, and an outdoor temperature sensor is arranged on the left outer side of the temperature controller.
Description
Technical field
The utility model relates to a kind of circulation of air equipment of communications equipment room, definite says a kind of communications equipment room outer circulation heat exchange energy-saving device.
Background technology
Fast development along with social progress and communication network cause, the website of various places communication network and IDC communications equipment room " spread all over the place ", and in order to improve communication quality, also have to encrypt to increase the trend expanding, pay with its network equipment energy consumption of runing simultaneously the situation that also linearly rises.Therefore, how guaranteeing under the prerequisite of network quality energy-saving and cost-reducingly, reducing carrier network operation and maintenance cost, realizing " low-cost, high benefit " operation, is pendulum maximum difficult problem in face of each operator.
At present, existing communications equipment room all adopts the wall body structure of heat-insulating and sealing, in environment temperature, during higher than machine room design temperature (being generally 21 ℃-26 ℃), can avoid external heat conduction to invade, and has reduced to a certain extent air conditioner refrigerating energy consumption; But this airtight containment body structure is in environment temperature during lower than computer room temperature design temperature, can not utilize extraneous low-temperature receiver to room temperature lowering, can only rely on air conditioner refrigerating to keep the temperature of communications equipment room environment set, cause the significant wastage of communications equipment room air conditioner refrigerating energy consumption, to operator, cause huge network O&M cost pressure.
Though there is minority communications equipment room, attempt adopting equipment room ventilation, in environment temperature, during lower than computer room temperature design temperature (being generally 21 ℃-26 ℃), directly introduce external environment low-temperature receiver, reduce communication computer room temperature, reduce air conditioner refrigerating energy consumption, but in using, have again lower column defects:
The one, usefulness is low: due to moistureproof, the dustproof requirement of communications equipment room, existing communication ventilation equipment generally adopt double-filtration, absorption, and twice filtration of employing, though when having solved to a certain extent dustproof, moistureproof problem, but also brought a root problem, that is exactly that the actual introducing of equipment room ventilation equipment cold blast rate is less through the stopping of two-stage filter screen, new wind heat load wretched insufficiency, result of use is not obvious.The 2nd, maintenance workload is large: the variation in air quality, environment temperature and the temperature difference is the crucial period of adjusting computer room temperature, the spring in region, autumn, three seasons of winter to the north of China's Yangze river and Huai river, ubiquity sand, floating dust, the wadding phenomenon of wafing.At equipment room ventilation motor run duration, the sand of appearance, floating dust, the wadding that wafts, usually cause the operation of double-filtration net short time just to there will be " dirty stifled " phenomenon.According to actual maintenance experience, general machine room ventilation energy-saving equipment operation first quarter moon left and right, will form dirty stifled phenomenon completely, needs to change two-stage filter screen one time, and Yi Ge districts and cities are furnished with hundreds of websites, and maintenance workload is well imagined.The 3rd, operating cost is high: two weeks is changed a two-stage filter screen, brings the Cost Problems of at least two aspects: need to configure a large amount of filter screen spare parts, increase cost very high; Need to drop into a large amount of manpower and materials, vehicles safeguarded, this further increases operating cost.The 4th, in fact in discarded state: safeguard that in current network funds are limited, in attendant, the relatively nervous situation of vehicles configuration, two-stage filter screen of two weeks replacing may not accomplished.This just causes us to drop into substantial contribution by communication enterprise, thousands of the communications equipment room ventilation equipment of building, can not change in time filter screen, the overwhelming majority is because dirty stifled in fact inoperative, in discarded state, motor rotation also will consume electric energy simultaneously, and this is other waste of a kind of how " crime " level.The 5th, there is fire incident hidden danger: when ambient temperature running temperature arranges, though communications equipment room ventilation equipment filter screen in " dirty stifled " state, ventilation motor also can continuous running.We know, ventilation motor itself is to rely on circulation cold wind to carry out cooling, under this state, be actually and substantially there is no cold wind circulation motor, will cause ventilation motor coil persistently overheating for a long time, very easily occur that insulation ag(e)ing destroys, even cause the generation of short-circuit fire accident, have obvious fire safety evaluating accident potential.
Summary of the invention
The solution of the present invention overcomes above-mentioned defect exactly, and a kind of passage closed communications equipment room outer circulation heat exchange energy-saving device is provided, and to improve the working environment quality of communication network device, reduces network operation maintenance and drops into, and realizes " low cost, high benefit " operation.
Scheme of the present utility model is comprised of machine room, cold air duct, air draft pipe, heat exchanger, temperature controller, air exhauster, air conditioner, cold wind pond and cold air duct groove, its design feature is to be provided with heat exchanger in the rear outside of machine room, in the framework of heat exchanger, be provided with cooling heat dissipation pipeline, the left side of heat exchanger is provided with cold wind air collecting box, the air outlet of cold wind air collecting box is provided with two cold air ducts in left and right, and two of left and right cold air duct is provided with two the afterburning blower fans in left and right.In machine room, be provided with communication network device, communication network device is arranged in order and is arranged in machine room, the rear side of communication network device is equipped with air conditioner, the bottom of air conditioner is provided with geosyncline, the bottom of communication network device is provided with cold air duct groove, the upper end of cold air duct groove is provided with cold wind air intake web plate, and the upper end of communication network device is provided with cold wind exhaust vent.In the geosyncline of air conditioner bottom, be provided with cold wind pond, cold air duct groove is connected with cold wind pond respectively successively, and the air outlet of two cold air ducts in left and right is connected on the air inlet at two ends, left and right, cold wind pond, is respectively equipped with the movable insulated door of self-closing on air inlet.The right-hand member of heat exchanger is provided with hot bellows, the right-hand member of hot bellows is provided with air exhauster, and air draft pipe is equipped with on the right side of air exhauster, and the inlet scoop of air draft pipe is arranged in machine room, the movable insulated door of self-closing is equipped with in the machine room porch of air draft pipe, and the middle part of air draft pipe is provided with power-assisted air-introduced machine.In machine room, be provided with temperature controller, the left-external side of temperature controller is provided with outdoor temperature sensor, and right side is provided with indoor temperature transmitter, and the lower-left side of temperature controller is provided with Alternating Current Power Supply contactor.
Its course of work:
1, start and stop temperature (electric motor starting temperature set points outdoor temperature is 20 ℃, and motor closing temperature set-point is that communications equipment room indoor temperature is 21 ℃) is set on temperature controller;
2, communications equipment room outdoor temperature sensor detects communications equipment room outdoor environment temperature;
3,, when communications equipment room outdoor environment temperature reaches electric motor starting design temperature lower than 20 ℃, temperature controller sends motor and opens control driving signal;
4, motor Alternating Current Power Supply electromagnetic contactor coil obtains electric work, Alternating Current Power Supply contactor adhesive conducting, and air exhauster motor, the operation of power-assisted blower motor start exhausting;
5, the air in hot blast air channel starts to flow, and forms negative pressure at the heat insulation dodge gate of hot blast self-closing place, opens the heat insulation dodge gate of hot blast self-closing, by the higher hot blast gas suction air channel of temperature in communications equipment room;
6, in communications equipment room, the higher gas of temperature flows in air channel, enters heat exchanger, by aluminum heat-conducting plate, heat is delivered to communications equipment room external environment condition, becomes the air that temperature is lower (hereinafter to be referred as cold wind);
7, cold wind enters cold air duct through afterburning blower fan suction, at the heat insulation dodge gate of cold wind self-closing place, form malleation, open self-closing dodge gate and enter cold air duct groove, air intake web plate by cold air duct groove upper end makes progress, cold wind exhaust vent through communication network device upper end is discharged, and participates in air conditioning air flow circulation;
8, the temperature in communications equipment room drops to building environment guarantee temperature set points (24 ℃), and communications equipment room air-conditioning quits work;
9, when communications equipment room outdoor environment temperature reaches motor, close down design temperature motor while closing down temperature set points temperature lower than 21 ℃, temperature controller stops sending motor and opens to control and drive signal;
10, motor Alternating Current Power Supply electromagnetic contactor coil losing electricity, Alternating Current Power Supply contactor is decontroled contact conducting, and motor shuts down, and ventilation stops;
11, when computer room temperature is spent higher than 23, automatically perform (3-10) job step, but communications equipment room air-conditioning is not in operation;
12,, when ambient temperature is higher than 20 ℃, temperature controller stops sending motor and opens control driving signal; Motor Alternating Current Power Supply electromagnetic contactor coil losing electricity, Alternating Current Power Supply contactor is decontroled contact conducting, and motor shuts down, and ventilation stops;
13, the heat insulation dodge gate of hot blast self-closing, the heat insulation dodge gate of cold wind self-closing, under spring force effect, are closed automatically, guarantee communications equipment room self closed heat insulation.
14, communications equipment room temperature rises, and arrives building environment and ensures temperature set points (24 ℃ of left and right), and communications equipment room air-conditioning is started working.
15, as communications equipment room burst fire, temperature controller is according to indoor temperature transmitter temperature detection result (being greater than 65 ℃), automatically stop sending motor and open control driving signal, motor Alternating Current Power Supply electromagnetic contactor coil losing electricity, Alternating Current Power Supply contactor is decontroled contact conducting, motor shuts down, and ventilation stops.The heat insulation dodge gate of hot blast self-resetting type, the heat insulation dodge gate of cold wind self-resetting type, under spring force effect, are closed automatically, guarantee that communications equipment room self fire-fighting is airtight.
Four, the utility model innovative point
(1) the utility model energy-saving effect is obvious
As above scheme, aluminum heat-conducting plate adopts Double-contact surfaces folding 45
oinstall, guarantee to greatest extent exchange heat.
According to Q=
q: heat conduction amount; λ: thermal conductivity factor, aluminium is 0.237KW/ (m
2℃), b: thickness; (t
1-t
2): the temperature difference every square metre of 0.005m thickness aluminium sheet is { [0.237KW/ (m when communications equipment room internal-external temperature difference is 10 ℃
2℃)]/0.005}*10*1.44*2=68.25KW,
Substantially be equivalent to the communications equipment room air-conditioning that 1 refrigerating capacity is 50KW, only consume ventilation motor operating power, refrigeration efficiency, than up to 40-60, is the more than 20 times of communications equipment room air-conditioning.
With DC load 2000A communications equipment room, calculate, thermic load is 53.6V*2000A=107.2KW,
Closed heat insulation communications equipment room air conditioning energy consumption is 107.2KW/2.5 (general air conditioner in machine room Energy Efficiency Ratio)=42.88KW, and 2.5 squares of this communications equipment room outer circulation heat exchange energy-saving device configurations can meet the computer room temperature requirements of support when 16 ℃ of communications equipment room outdoor temperatures; Configure 5 squares and can meet the computer room temperature requirements of support when 20 ℃ of communications equipment room outdoor temperatures.
According to related data, to the north of Yangze river and Huai river, 16 ℃ of following time periods of region outdoor temperature are at least 5/12 of the whole year; 20 ℃ of following time periods are at least 6/12 of the whole year.
We calculate energy-saving benefit by 16 ℃ of following time periods, blower fan running energy consumption is 3KW, a year saving electricity consumption has (42.88KW-3KW) * 24*365*5/12=145562KWH, calculates 14.56 ten thousand yuan of year saving communication enterprise electric cost expenditures by producing comprehensive electricity charge 1.00/KWH.
And the utility model Installed capital cost is no more than 50,000 yuan, less than recouping capital outlay half a year, there is higher economy return.
(2) automaticity is high, and adaptive ability is strong, does not substantially need special maintenance
1, according to communications equipment room ambient temperature, automatically open, close ventilation, adaptive ability is strong, and automaticity is high, does not substantially need manual operation, and maintenance cost is low; In breaking out of fire, be automatically to stop ventilating;
2, adopt spring self-closing type heat-insulating, fire-preventing dodge gate, the positive and negative pressure forming when blower fan turns round, opens automatically; When blower fan is out of service, under the effect of spring power, automatically close, guarantee that communications equipment room fire prevention is airtight, do not need special control circuit, energy-conservation, safe, reliable.
(3) applied widely, where applicable segment length.
Can find out from the graph, the vast regions such as China's North of Yangtze River region and Qinghai, Tibet, average temperature of the whole year is below 16 ℃, adopt the present invention, can save communications equipment room air conditioner refrigerating electricity charge 50%-80%(according to area differentiation, benefit operation period length is distinguished to some extent), there is obvious economic benefit.
(4) being applicable to large-scale promotion uses
1, technology maturation, Market Orientation is high
Temperature controller, exhausting power-assisted blower motor market that the utility model adopts are on sale, and the heat insulation dodge gate of self-closing, air channel structure are simple, save investment cost;
2, the utility model material therefor, equipment, market is on sale, with low cost, easily promotes the use of on a large scale.
(5) safe coefficient is high
The whole heat exchange recyclegas of the utility model flows and all in closed box, road, to carry out, and exchange heat is by aluminum heat-conducting plate conduction exchange, will not external environment contact, stop dust, moisture enters machine room at all.
At the fire that happens suddenly as communications equipment room, temperature controller is according to indoor temperature transmitter temperature detection result (being greater than 65 ℃), automatically stop sending motor and open control driving signal, motor Alternating Current Power Supply electromagnetic contactor coil losing electricity, Alternating Current Power Supply contactor is decontroled contact conducting, motor shuts down, and ventilation stops.The heat insulation dodge gate of hot blast self-resetting type, the heat insulation dodge gate of cold wind self-resetting type, under spring force effect, are closed automatically, guarantee that communications equipment room self fire-fighting is airtight.
The utility model is simple in structure, and the national energy-saving of fitting completely reduces discharging policy, meets enterprise security, fire protection criteria requirement.
Below in conjunction with accompanying drawing, be described in further detail.
Accompanying drawing explanation
Fig. 1 is external circulating system plan structure schematic diagram;
Fig. 2 is external circulating system side-looking structural representation;
Fig. 3 is external circulating system backsight structural representation;
Fig. 4 is heat converter structure schematic diagram;
Fig. 5 is self-closing insulated door structure schematic diagram;
Fig. 6 is control circuit connection diagram;
Fig. 7 is hot channel structural representation;
Fig. 8 is Chinese festiva temperature on average distribution map.
The specific embodiment
The rear outside of the machine room 1 shown in Fig. 1-4 is provided with heat exchanger 7, in the framework 33 of heat exchanger, be provided with cooling heat dissipation pipeline 34, the left side of heat exchanger is provided with cold wind air collecting box 6, the outlet of cold wind air collecting box is provided with left cold air duct 4, right cold air duct 5, left cold air duct is provided with left afterburning blower fan 3, right cold air duct is provided with right afterburning blower fan 11, in machine room, be provided with communication network device 16, communication network device is arranged in order and is arranged in machine room, the rear side of ventilation network equipment is provided with air conditioner 10, the bottom of air conditioner is provided with geosyncline, the bottom of ventilation network equipment is provided with cold air duct groove 20, the upper end of cold air duct groove is provided with cold wind air intake web plate 21, the upper end of communication network device is provided with cold wind exhaust vent 19, in the geosyncline of air conditioner bottom, be provided with cold wind pond 13, cold air duct groove is connected with cold wind pond respectively successively, the air outlet of left cold air duct 4 is connected on the left air inlet of cold wind pond left end, left air inlet is provided with the movable insulated door 2 of left self-closing, the air outlet of right cold air duct 5 is connected on the right air inlet of cold wind pond right-hand member, right air inlet is provided with the movable insulated door 12 of right self-closing, the right-hand member of heat exchanger is provided with hot bellows 9, the right-hand member of hot bellows is provided with air exhauster 8, air draft pipe 15 is equipped with on the right side of air exhauster, the inlet scoop 18 of air draft pipe is arranged in machine room, the machine room porch of air draft pipe is provided with the movable insulated door 17 of self-closing, the middle part of air draft pipe is provided with power-assisted air-introduced machine 14, in machine room, be provided with temperature controller.
The movable insulated door of self-closing shown in Fig. 5 is comprised of doorframe, insulated door and tensioning spring, and the inboard of doorframe 22 is provided with insulated door 23, and back-moving spring 24 is equipped with in the right-hand member of insulated door and the junction of doorframe.
In machine room shown in Fig. 6, be provided with temperature controller 30, the left-external side of temperature controller is provided with outdoor temperature sensor 29, right side is provided with indoor temperature transmitter 31, the bottom side of temperature controller is provided with control circuit connecting line 32, the lower-left side of temperature controller is provided with Alternating Current Power Supply contactor 28, the lower end of Alternating Current Power Supply contactor is connected with air exhauster motor 27, two the afterburning blower motors 25 in power-assisted id-motor 26 and left and right.
Cooling heat dissipation pipeline 34 shown in Fig. 7 is comprised of outer tube and inner tube, and the middle part of outer tube is provided with inner tube 36, is provided with collapsible conducting strip 35 between inner tube and outer tube.
On air temperature distribution figure shown in Fig. 8, the vast zone leveling temperature such as China's North of Yangtze River region and Qinghai, Tibet, all below 16 ℃, are promoted the utility model, more than can saving communications equipment room air conditioner refrigerating electricity charge 50-70% in the whole nation.
Claims (4)
1. a communications equipment room outer circulation heat exchange energy-saving device, by machine room, cold air duct, air draft pipe, heat exchanger, temperature controller, air exhauster, air conditioner, cold wind pond and cold air duct groove form, it is characterized in that: the rear outside of described machine room (1) is provided with heat exchanger (7), in the framework of heat exchanger (33), be provided with cooling heat dissipation pipeline (34), the left side of heat exchanger is provided with cold wind air collecting box (6), the outlet of cold wind air collecting box is provided with left cold air duct (4), right cold air duct (5), left cold air duct is provided with left afterburning blower fan (3), right cold air duct is provided with right afterburning blower fan (11), in machine room, be provided with communication network device (16), communication network device is arranged in order and is arranged in machine room, the rear side of ventilation network equipment is provided with air conditioner (10), the bottom of air conditioner is provided with geosyncline, the bottom of ventilation network equipment is provided with cold air duct groove (20), the upper end of cold air duct groove is provided with cold wind air intake web plate (21), the upper end of communication network device is provided with cold wind exhaust vent (19), in the geosyncline of air conditioner bottom, be provided with cold wind pond (13), cold air duct groove is connected with cold wind pond respectively successively, the air outlet of left cold air duct (4) is connected on the left air inlet of cold wind pond left end, left air inlet is provided with the movable insulated door (2) of left self-closing, the air outlet of right cold air duct (5) is connected on the right air inlet of cold wind pond right-hand member, right air inlet is provided with the movable insulated door (12) of right self-closing, the right-hand member of heat exchanger is provided with hot bellows (9), the right-hand member of hot bellows is provided with air exhauster (8), air draft pipe (15) is equipped with on the right side of air exhauster, the inlet scoop of air draft pipe (18) is arranged in machine room, the machine room porch of air draft pipe is provided with the movable insulated door (17) of self-closing, the middle part of air draft pipe is provided with power-assisted air-introduced machine (14), in machine room, be provided with temperature controller.
2. communications equipment room outer circulation heat exchange energy-saving device according to claim 1, it is characterized in that: the movable insulated door of described self-closing is comprised of doorframe, insulated door and tensioning spring, the inboard of doorframe (22) is provided with insulated door (23), and back-moving spring (24) is equipped with in the right-hand member of insulated door and the junction of doorframe.
3. communications equipment room outer circulation heat exchange energy-saving device according to claim 1, it is characterized in that: in described machine room, be provided with temperature controller (30), the left-external side of temperature controller is provided with outdoor temperature sensor (29), right side is provided with indoor temperature transmitter (31), the bottom side of temperature controller is provided with control circuit connecting line (32), the lower-left side of temperature controller is provided with Alternating Current Power Supply contactor (28), the lower end of Alternating Current Power Supply contactor is connected with air exhauster motor (27), two the afterburning blower motors in power-assisted id-motor (26) and left and right (25).
4. communications equipment room outer circulation heat exchange energy-saving device according to claim 1, it is characterized in that: described cooling heat dissipation pipeline (34) is comprised of outer tube and inner tube, the middle part of outer tube is provided with inner tube (36), is provided with collapsible conducting strip (35) between inner tube and outer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185513.XU CN203880855U (en) | 2014-04-17 | 2014-04-17 | Circulation heat exchange energy-saving device outside communication machine room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185513.XU CN203880855U (en) | 2014-04-17 | 2014-04-17 | Circulation heat exchange energy-saving device outside communication machine room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203880855U true CN203880855U (en) | 2014-10-15 |
Family
ID=51681344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420185513.XU Expired - Fee Related CN203880855U (en) | 2014-04-17 | 2014-04-17 | Circulation heat exchange energy-saving device outside communication machine room |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203880855U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900180A (en) * | 2014-04-17 | 2014-07-02 | 桑永礼 | Outer circulation heat exchange energy-saving device for communication equipment room |
| CN104847037A (en) * | 2015-05-30 | 2015-08-19 | 中国移动通信集团安徽有限公司阜阳分公司 | Intelligent temperature-control energy-saving double-layer wall |
| CN105246311A (en) * | 2015-11-18 | 2016-01-13 | 桑永礼 | Circulating type heat exchange energy-saving device |
| CN109449801A (en) * | 2018-11-22 | 2019-03-08 | 国网河南省电力公司民权县供电公司 | A kind of multifunction power equipment radiator |
-
2014
- 2014-04-17 CN CN201420185513.XU patent/CN203880855U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900180A (en) * | 2014-04-17 | 2014-07-02 | 桑永礼 | Outer circulation heat exchange energy-saving device for communication equipment room |
| CN103900180B (en) * | 2014-04-17 | 2016-03-16 | 桑永礼 | A kind of communications equipment room outer circulation heat exchange energy-saving device |
| CN104847037A (en) * | 2015-05-30 | 2015-08-19 | 中国移动通信集团安徽有限公司阜阳分公司 | Intelligent temperature-control energy-saving double-layer wall |
| CN105246311A (en) * | 2015-11-18 | 2016-01-13 | 桑永礼 | Circulating type heat exchange energy-saving device |
| CN109449801A (en) * | 2018-11-22 | 2019-03-08 | 国网河南省电力公司民权县供电公司 | A kind of multifunction power equipment radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20190417 |