CN105928275B - Heat pump - Google Patents
Heat pump Download PDFInfo
- Publication number
- CN105928275B CN105928275B CN201610296491.8A CN201610296491A CN105928275B CN 105928275 B CN105928275 B CN 105928275B CN 201610296491 A CN201610296491 A CN 201610296491A CN 105928275 B CN105928275 B CN 105928275B
- Authority
- CN
- China
- Prior art keywords
- oil
- solenoid valve
- pressure value
- exhaust pressure
- compressor
- 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 - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/04—Clogging
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Compressor (AREA)
Abstract
The control method of heat pump, the high-pressure side of heat pump are equipped with cooling circuit, and by detecting the high-pressure side state N of compressor, controller compares the actually detected value and setting value of N；Corresponding to the situation of actually detected value and setting value, the opening and closing in control cooling circuit.
Description
Technical field：
The present invention relates to heat pump/refrigerating field of energy-saving technology.
Background technology：
Heat pump is a kind of energy-saving and environmental protection, comfortable refrigeration system, is widely used in factory, laboratory and common implementing etc.
Place.In system, the structures such as compressor, four-way valve, outdoor heat-exchange device, throttle mechanism and indoor heat converter are generally included
Into loop.
In the prior art, when accumulating certain time length at runtime due to heat pump unit, the impurity accumulation in machine oil, makes
Foreign body is put aside in into oily return pipeline, causes the machine oil deficiency for returning to compressor, thus influences compressor performance and unit
Performance even burns compressor.And when thus causing compressor high side pressure and excessive discharge temperature, the prior art
Solution is off compressor, after standby a period of time, then starts running.So as to have impact on the operational efficiency of system, heat pump
Therefore the service life of unit is also reduced.
Also, since compressor and its connecting pipeline need to be removed when maintenance machine oil blocks, so that cause heat pump not run,
The process of dismounting also expends a large amount of processes, and cost is higher.
The content of the invention：
One of the object of the invention is to provide for a kind of control method of heat pump, it is capable of providing a kind of oil-returning structure so that
Greatly reduce the problem of oil return blocks.
The present invention also aims to provide a kind of control method of heat pump, it can occur in system discharge pressure and temperature
When abnormal, pressure at expulsion and delivery temperature can be reduced without shutting down, is allowed to continuously run.
The invention reside in a kind of heat pump is provided, wherein compressor, oil eliminator, transfer, outdoor heat utilization device, the
It is main system that one throttle mechanism, indoor heat utilization device, gas-liquid separator, which pass sequentially through the loop that pipeline is formed by connecting,
Cold heating circuit, it is characterised in that：Oil screen is additionally provided with connecting tube between oil eliminator and the air entry of compressor, oil
Branch is additionally provided between the outlet of gas separating device 2 and transfer 3, wherein the gas vent connection regenerator of oil eliminator is cold
Matchmaker's entrance, reduces temperature wherein, and then the refrigerant exit through regenerator is connected to the entrance of the first solenoid valve 8, the first electricity again
The outlet of magnet valve is connected to the condenser inlet of generator, condenses wherein, and the condensator outlet of generator is connected to the second section
Mechanism is flowed, the outlet of second throttle body is respectively connected to the port of transfer and the entrance of gas-liquid separator, gas-liquid separation
The outlet of device is connected to the air entry of compressor.Generator also there is solution line to return to absorber 13, absorber through regenerator
Also there is solution line to convey solution to generator through pump, regenerator, second solenoid valve.When exhaust lateral pressure or temperature rise
It is abnormal, the first and second solenoid valves are opened respectively so that reduce pressure at expulsion and delivery temperature.
The present invention also provides a kind of control method of heat pump, comprise the following steps：
(1) normally heating or during refrigerating operaton, closes the first solenoid valve and second solenoid valve；
(2) pressure at expulsion of compressor is detected, interval time T is set, when interval time T is 12 small, from compressor start
Every T time, pressure at expulsion and the exhaust pressure value of setting that controller relatively detects；
(3) when detecting：During exhaust pressure value the first preset values of ＞ of exhaust pressure value-setting, then the first electromagnetism is opened
Valve so that the refrigerant of compressor outlet passes through the condenser in oil eliminator, regenerator, the first solenoid valve, generator, second
Throttle mechanism returns to compressor through gas-liquid separator again；
(4) after opening the first solenoid valve, controller is 30 minutes every T2 times, T2, compares the pressure at expulsion detected
With the exhaust pressure value of setting, when detecting the exhaust pressure value of pressure at expulsion=setting, then first is closed by the T2 times
Solenoid valve；When detecting that pressure at expulsion is less than the exhaust pressure value of setting, then the first solenoid valve is closed；
(5) when detecting：During exhaust pressure value the second preset values of ＞ of exhaust pressure value-setting, wherein the second preset value
More than the first preset value, then second solenoid valve is opened so that solution absorbs heat in generator, then enters regenerator through solution line
In, the solution with coming from absorber exchanges heat, and enters back into absorber and absorbs heat, the driving through pump, which is returned again in generator, to be followed
Ring；
(6) controller is 30 minutes every T2 times, T2, compares the pressure at expulsion and the pressure at expulsion of setting detected
Value, when detecting：During exhaust pressure value the first preset values of ＜ of exhaust pressure value-setting, then second solenoid valve is closed；Work as detection
To pressure at expulsion=setting exhaust pressure value when, then close the first solenoid valve by the T2 times；When detecting that pressure at expulsion is small
When the exhaust pressure value of setting, then the first solenoid valve is closed.
The present invention also provides a kind of control method of heat pump, it is characterised in that there is the oil reduced to enter in the pipe of oil screen
Mouthful, oil-in forms the annular formed in ring wall surface, namely pipe by extending radially inwardly out projection from the tube wall of oil screen
Wall, wall center leave aperture and constitute oil-in, the inclined wall having for the downstream to the tilted extension of pipe of oil-in
Face, the downstream of oil-in have oil export, widened space are formed between oil-in and oil export, and on tube wall between the two
Post fibrous filter net.
The present invention also provides a kind of control method of heat pump, it is characterised in that absorbs generating loop and may be connected to heat utilization
Equipment, heat is for users to use.
Heat pump according to the present invention, oil-filtering apparatus can reduce the impurity in machine oil, and the machine oil after filtering returns to compressor
The lubrication qualities of compressor can be improved.
Therefore the efficiency of system is improved, and system jams failure can be reduced, and the noise of compressor can be reduced.
Heat pump according to the present invention, by monitoring pressure at expulsion in real time, by controlling two solenoid valves to open gas outlet institute
If cooling branch, you can be effectively reduced mid-winter boosting, without shutting down, the operation for improving system uses, and reduction opens
The cost shut down and overhauled.
Accompanying drawing content explanation
Attached drawing 1 is the oil-filtering apparatus structure diagram of the present invention.
Attached drawing 2 is the heat pump schematics of the present invention.
Embodiment
As shown in Fig. 2, the heat pump of the present invention includes compressor 1, oil eliminator 2, transfer 3, outdoor heat utilization device
4th, first throttle mechanism 5, indoor heat utilization device 6, gas-liquid separator 7 pass sequentially through the loop that pipeline is formed by connecting.Its
Middle compressor 1, oil eliminator 2, transfer 3, outdoor heat utilization device 4, first throttle mechanism 5, indoor heat utilization device 6,
It is main cooling and warming circuit that gas-liquid separator 7, which passes sequentially through the loop that pipeline is formed by connecting,.
In the major loop, circulation has a refrigerant, and during refrigeration mode, wherein 1 compression refrigerant of compressor is the gas of high temperature and pressure
Body, the gas carry out Oil-gas Separation by oil eliminator 2, and the diverted device 3 of refrigerant gas after separation flows to outdoor heat profit
Condensed with device 4, enter back into after first throttle mechanism 5 is throttled expansion, get in heat utilization device 6 and evaporate, after evaporation
Low-temperature refrigerant enters gas-liquid separator 7 and carries out gas-liquid separation, back to the suction inlet of compressor 1.
During heating mode, wherein 1 compression refrigerant of compressor be high temperature and pressure gas, the gas by oil eliminator 2 into
Row Oil-gas Separation, the diverted device 3 of refrigerant gas after separation flow to indoor heat utilization device 6 and condense, and enter back into first segment
After stream mechanism 5 is throttled expansion, evaporated into outdoor heat utilization device 6, the low-temperature refrigerant after evaporation enters gas-liquid separator 7
Gas-liquid separation is carried out, back to the suction inlet of compressor 1.
The machine oil wherein isolated in gs-oil separator 2, automatically returns to the air entry of compressor under high pressure effect, right
Compressor is lubricated.
In the system of the present invention, when being additionally provided with oily filter in the connecting tube between the air entry of oil eliminator 2 and compressor 1
Device 12, referring to attached drawing 1, attached drawing 1 is its concrete structure schematic diagram, and oil screen 12 and connecting tube are detachably connected, both can be with
Welding, can also be connected by both ends import 14, the outlet 15 in oil screen 12 by screw and nut with connecting tube, so that convenient
Periodically oil screen 12 is disassembled, carries out cleaning maintenance.
Oil screen 12 has the appearance for being matched with connecting tube, has the oil-in 16 reduced in the pipe of oil screen 12, oil enters
Mouth 16 forms the annular wall formed in ring wall surface, namely pipe by extending radially inwardly out projection from the tube wall of oil screen 12
Face, wall center leave aperture and constitute oil-in 16, the wall having for the downstream to the tilted extension of pipe of oil-in 16,
Its angle of inclination is preferably 60-80 degree, and the downstream of oil-in 16 has oil export 17, formed between oil-in 16 and oil export 17
Widened space, and post fibrous filter net on tube wall between the two.
So as to which lubricating oil is under the driving of high pressure, enters from narrow oil-in 16, diffused to suddenly by inclined wall
The collision with wall of whole chamber, lubricating oil and pipe, so that its impurity is by fibrous filter net adsorption precipitation, by deimpurity lubrication
Oil is flowed out from oil export 17, returns to compressor.There is pure quality hence into the lubricating oil of compressor 1, reduce pipeline
The problem of middle machine oil blocks, improves the operational energy efficiency of system.
As an alternative embodiment of the invention, referring to Fig. 1, the top half of the tube wall of oil screen 12 can be made into shape
Into multiple projections, which can be the projection of up-side down triangle, inverted trapezoidal or irregular shape, and close to oil-in 16
The density of projection is more than the density of the projection close to oil export 17, and the latter half of the tube wall of oil screen 12 sets the fiber erect
Filter screen 20, so that after machine oil enters from oil-in 16, hits, under impurity by the strong of triangle protuberance at the top with upstream
Fall, can be flowed out substantially by bottom wall of the fibrous filter net gear in upstream, more pure machine oil from oil export 17.
As the preferred embodiment of the present invention, the aperture of oil-in 16 is less than oil export 17, so as to ensure that machine oil flows out
Speed and flow.
The present invention can be efficiently reduced by setting oil filter 12 between the air entry of compressor 1 and gs-oil separator 2
The failure that lubricating oil blocks.And service personnel is only needed periodically to dismount oil filter 12, you can to clear up it.Even occur
Compressor is arranged caused by service personnel forgets situations such as cleaning, or machine oil blocks compressor lubrication deficiency etc. at the other positions
The abnormal rise of gas side temperature and pressure, by the structure of the heat pump of the present invention, can eliminate abnormal in the case of non-stop-machine.
Branch is additionally provided between the outlet of gs-oil separator 2 and transfer 3, the wherein gas vent of oil eliminator 2 connects
The refrigerant inlet of regenerator 21 is connect, reduces temperature wherein, then the refrigerant exit again through regenerator 21 is connected to the first electromagnetism
The entrance of valve 8, the outlet of the first solenoid valve 8 are connected to the condenser inlet of generator 9, condense wherein, the condensation of generator 9
Device outlet is connected to second throttle body 10, and the port that the outlet of second throttle body 10 is respectively connected to transfer 3 is gentle
The entrance of liquid/gas separator 7, the outlet of gas-liquid separator 7 are connected to the air entry of compressor 1.
Also there is generator 9 solution line to return to absorber 13 through regenerator 21, and absorber 13 also has solution line warp
Pump, regenerator 21, second solenoid valve 11 convey solution to generator 9.
When detecting that it is too fast that Compressor Discharge Pressure rises, then the first solenoid valve 8 and/or second solenoid valve 11 are opened, is transported
Line generator 9 so that reduce pressure at expulsion.
So as to which heat pump of the invention also has the operation method for eliminating high pressure-temperature exception.In normal heating or refrigeration
During operation, the first solenoid valve 8 and second solenoid valve 11 are closed.The sensor of the pressure at expulsion of detection compressor 1 is further included, and
Detect the sensor of delivery temperature, set interval time T, as interval time T for 12 it is small when, from compressor start every T time,
The pressure at expulsion that controller relatively detects and the exhaust pressure value of setting.When detecting：The exhaust pressure of exhaust pressure value-setting
During force value the first preset values of ＞, then open the first solenoid valve 8 so that compressor 1 export refrigerant by oil eliminator 2, return
Hot device 21, the first solenoid valve 8, the condenser in generator 9, second throttle body 10 return to compressor through gas-liquid separator 7 again
1.After opening the first solenoid valve 8, controller compared the pressure at expulsion detected and the row of setting every T2 times, such as 30 minutes
Air pressure force value, when detecting the exhaust pressure value of pressure at expulsion=setting, then closes the first solenoid valve 8 by the T2 times；When
When detecting that pressure at expulsion is less than the exhaust pressure value of setting, then the first solenoid valve 8 is closed.
When detecting：During exhaust pressure value the second preset values of ＞ of exhaust pressure value-setting, wherein the second preset value is more than
First preset value, then open the first solenoid valve 8 and second solenoid valve 11 at the same time so that the refrigerant that compressor 1 exports passes through oil
Separator 2, regenerator 21, the first solenoid valve 8, the condenser in generator 9, second throttle body 10 are again through gas-liquid separator 7
Return to compressor 1.And solution is absorbed heat in generator 9, then enter through solution line in regenerator 21, with coming from absorber
13 solution heat exchange, enters back into absorber 13 and absorbs heat, the driving through pump is returned again in generator 9 and circulated.Open first
After solenoid valve 8 and second solenoid valve 11, controller compared the pressure at expulsion detected and setting every T2 times, such as 30 minutes
Exhaust pressure value, when detecting：During exhaust pressure value the first preset values of ＜ of exhaust pressure value-setting, then the second electricity is closed
Magnet valve 11；When pressure at expulsion is equal to the exhaust pressure value of setting, then the first solenoid valve 8 is closed by the T2 times；When detecting
When pressure at expulsion is less than the exhaust pressure value of setting, then the first solenoid valve 8 is closed.
So as to which heat pump of the invention sets oil filter structure by 1 air entry of compressor, can efficiently reduce machine oil blocking
Failure, also, even if occur, due to system high temperature High Abnormal Pressure caused by plugging fault, can also pass through the absorption of the present invention once in a while
Timely early warning, rapid decrease temperature and pressure, without shutting down, so as to improve the operation effect of heat pump are realized with devices such as backheat circuits
Rate.
Claims (2)
1. a kind of control method of heat pump, wherein in heat pump, compressor, oil eliminator, transfer, outdoor heat utilization device,
It is main that first throttle mechanism, indoor heat utilization device, gas-liquid separator, which pass sequentially through the loop that pipeline is formed by connecting,
Cooling and warming circuit, it is characterised in that：Oil screen is additionally provided with connecting tube between oil eliminator and the air entry of compressor,
Branch is additionally provided between the outlet of gs-oil separator and transfer, wherein the gas vent connection regenerator of oil eliminator is cold
Matchmaker's entrance, reduces temperature wherein, and then the refrigerant exit through regenerator is connected to the entrance of the first solenoid valve, the first electromagnetism again
The outlet of valve is connected to the condenser inlet of generator, condenses wherein, and the condensator outlet of generator is connected to the second throttling
Mechanism, the outlet of second throttle body are respectively connected to the port of transfer and the entrance of gas-liquid separator, gas-liquid separator
Outlet be connected to the air entry of compressor, generator also there is solution line to return to absorber through regenerator, and absorber also has
There is solution line to convey solution to generator through pump, regenerator, second solenoid valve；
The control method is characterized in that comprising the following steps：
(1) normally heating or during refrigerating operaton, closes the first solenoid valve and second solenoid valve；
(2) pressure at expulsion of compressor is detected, interval time T is set, when interval time T is 12 small, from compressor start every T
Time, the pressure at expulsion that controller relatively detects and the exhaust pressure value of setting；
(3) when detecting：During exhaust pressure value the first preset values of ＞ of exhaust pressure value-setting, then the first solenoid valve is opened, is made
The refrigerant for obtaining compressor outlet passes through the condenser in oil eliminator, regenerator, the first solenoid valve, generator, the second throttling
Mechanism returns to compressor through gas-liquid separator again；
(4) after opening the first solenoid valve, controller is 30 minutes every T2 times, T2, compares the pressure at expulsion detected with setting
Fixed exhaust pressure value, when detecting the exhaust pressure value of pressure at expulsion=setting, then closes the first electromagnetism by the T2 times
Valve；When detecting that pressure at expulsion is less than the exhaust pressure value of setting, then the first solenoid valve is closed；
(5) when detecting：During exhaust pressure value the second preset values of ＞ of exhaust pressure value-setting, wherein the second preset value is more than
First preset value, then open the first solenoid valve and second solenoid valve so that solution absorbs heat in generator, then through solution line into
Enter in regenerator, the solution with coming from absorber exchanges heat, and enters back into absorber and absorbs heat, the driving through pump is returned again in generator
Circulated；
(6) controller is 30 minutes every T2 times, T2, compares the pressure at expulsion detected and the exhaust pressure value of setting, when
Detect：During exhaust pressure value the first preset values of ＜ of exhaust pressure value-setting, then second solenoid valve is closed；When the row of detecting
During the exhaust pressure value of atmospheric pressure=setting, then the first solenoid valve is closed by the T2 times；Set when detecting that pressure at expulsion is less than
During fixed exhaust pressure value, then the first solenoid valve is closed.
2. control method as claimed in claim 1, it is characterised in that：There is the oil-in reduced in the pipe of oil screen, it is described
Oil-in forms the annular wall formed in ring wall surface, namely pipe by extending radially inwardly out projection from the tube wall of oil screen
Face, wall center leave aperture and constitute the oil-in, the oil-in have for the downstream to the tilted extension of pipe
Wall, the downstream of the oil-in have oil export, widened space, and two are formed between the oil-in and the oil export
Fibrous filter net is posted on tube wall between person.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610296491.8A CN105928275B (en) | 2016-05-06 | 2016-05-06 | Heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610296491.8A CN105928275B (en) | 2016-05-06 | 2016-05-06 | Heat pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105928275A CN105928275A (en) | 2016-09-07 |
| CN105928275B true CN105928275B (en) | 2018-05-11 |
Family
ID=56834593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610296491.8A Expired - Fee Related CN105928275B (en) | 2016-05-06 | 2016-05-06 | Heat pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN105928275B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100133647A (en) * | 2009-06-12 | 2010-12-22 | (주)유한 | A compressor protecting device for the heatpump |
| CN102635977B (en) * | 2011-12-31 | 2014-01-22 | 广东欧科空调制冷有限公司 | Low-temperature full-heat recycling type air-cooling heat pump set |
| CN103542606B (en) * | 2013-10-31 | 2016-08-03 | Tcl空调器(中山)有限公司 | Heat pump type air conditioning system and control method thereof |
| CN104132487B (en) * | 2014-07-24 | 2017-01-18 | 康特能源科技(苏州)有限公司 | Air source heat pump system of double-pressure control |
| CN204555425U (en) * | 2015-01-22 | 2015-08-12 | 宁波赛森节能设备有限公司 | A kind of ultra-low-loop temperature air source heat pump with backheat |
| CN205137982U (en) * | 2015-09-22 | 2016-04-06 | 苏州工业园区瀚科机器制造有限公司 | Two return circuit heat accumulation defrosting type air conditioners |
| CN105241105A (en) * | 2015-10-22 | 2016-01-13 | 湖南大学 | Refrigerating system based on oil cooling compression circulation |
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2016
- 2016-05-06 CN CN201610296491.8A patent/CN105928275B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN105928275A (en) | 2016-09-07 |
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Address after: 315211 Zhejiang Province, Ningbo city Haishu District cypress Road No. 89 Ningbo University of Technology Applicant after: Ningbo University of Technology Address before: 315211 Ningbo University of Technology, 201 Fenghua Road, Jiangbei District, Zhejiang, Ningbo Applicant before: Ningbo University of Technology |
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