CN207990987U - A kind of wall-hung condensing gas furnace of waste heat secondary recovery - Google Patents
A kind of wall-hung condensing gas furnace of waste heat secondary recovery Download PDFInfo
- Publication number
- CN207990987U CN207990987U CN201820419332.7U CN201820419332U CN207990987U CN 207990987 U CN207990987 U CN 207990987U CN 201820419332 U CN201820419332 U CN 201820419332U CN 207990987 U CN207990987 U CN 207990987U
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- heat exchanger
- wall
- heat conduction
- conduction
- heat
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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]
Abstract
The utility model discloses a kind of wall-hung condensing gas furnaces of waste heat secondary recovery, heating device, heat-energy recovering apparatus, driving device, smoke exhaust pipe, water inlet pipe and the outlet pipe that it includes shell, is set in shell, the heating device includes the main heat exchanger of combustion chamber and setting in the combustion chamber, heat-energy recovering apparatus includes the thermal energy recovery room being arranged in shell and recycles indoor secondary heat exchanger positioned at thermal energy, thermal energy recovery room lower end side is connected to combustion chamber by smoke-intake pipe, and thermal energy recovery room upper end is connected to smoke exhaust pipe；Secondary heat exchanger upper end connects water inlet pipe, secondary heat exchanger lower end connects main heat exchanger, wherein, secondary heat exchanger includes vertically disposed heat conduction supervisor and is set in the heat conduction looped pipeline that heat conduction is responsible for, and driving device is connect with heat conduction looped pipeline by V belt translation or chain drive.The wall-hung condensing gas furnace improves the heat exchanger effectiveness of secondary heat exchanger and high-temperature flue gas, energy conservation and environmental protection by rotatable pair heat exchanger in thermal energy recovery room.
Description
Technical field
The utility model is related to wall-hung boiler field more particularly to a kind of wall-hung condensing gas furnaces of waste heat secondary recovery.
Background technology
Wall-hung boiler is the device for using gas heating domestic water and providing heating, currently, more and more people start to make
Use wall-hung boiler.However, existing routine wall-hung boiler only disposably utilizes the heat of combustion chamber, the high temperature cigarette for generation of burning
The a large amount of heat of gas carrying, which is not fully utilized, to be just discharged away, and the capacity usage ratio of this wall-hung boiler is low, and loss is high, exhaust gas
Discharge is high, and pollution is big.In today of energy shortages, unnecessary energy waste is reduced, product can be increased by improving energy utilization rate
Competitiveness contributes to ecological protection.
Therefore, existing wall-hung boiler need further to develop.
Utility model content
In view of the above technical problems, the utility model embodiment provides a kind of wall-hung condensing gas furnace of waste heat secondary recovery,
To solve heat in the inabundant recovered flue gas of conventional wall-hung boiler at present, the low problem of energy utilization rate.
The utility model provides following technical scheme：
A kind of wall-hung condensing gas furnace of waste heat secondary recovery comprising shell, the heating device being set in shell, thermal energy return
Receiving apparatus, driving device, smoke exhaust pipe, water inlet pipe and outlet pipe, wherein the heating device includes that combustion chamber and setting are being burnt
Indoor main heat exchanger, the heat-energy recovering apparatus include the thermal energy recovery room being arranged in shell and be located at thermal energy recovery room
Interior secondary heat exchanger, the thermal energy recovery room lower end side are connected to combustion chamber, the connection of thermal energy recovery room upper end by smoke-intake pipe
Smoke exhaust pipe；The pair heat exchanger upper end connects water inlet pipe, and secondary heat exchanger lower end connects main heat exchanger, wherein the pair
Heat exchanger includes vertically disposed heat conduction supervisor and is set in the heat conduction looped pipeline that heat conduction is responsible for, and the heat conduction supervisor both ends are divided
It is not connected to water inlet pipe and main heat exchanger, multiple conduction wings that the heat conduction looped pipeline radially extends, the heat conduction looped pipeline is logical
It crosses the fixing bearing being arranged at heat conduction looped pipeline both ends and is rotationally connected with thermal energy recycling chamber interior walls, the driving device and heat conduction looped pipeline
It is connected by V belt translation or chain drive.
The wall-hung condensing gas furnace, wherein rotary shaft that the pair heat exchanger be arranged by heat conduction looped pipeline upper and lower side and
The fixing bearing for being fixed on thermal energy recycling chamber interior walls is connected, and the driving device includes the transmission gear of setting on the rotary shaft
The driving motor being connect with transmission gear, the rotary shaft are keyed with transmission gear, and the transmission gear passes through band
Transmission or chain drive are connected to driving motor, and the driving motor is fixed on the inner wall of thermal energy recovery room.
The wall-hung condensing gas furnace, wherein driving device further includes speed reducer, speed reducer respectively with driving motor and rotation
Axis connection.
The wall-hung condensing gas furnace, wherein the thermal conductive cavity and conduction that the heat conduction looped pipeline and the tube wall of heat conduction supervisor are formed
Wing inner cavity is connected, and conductive fluid is filled in thermal conductive cavity.
The wall-hung condensing gas furnace, wherein heat conduction looped pipeline is fitted closely and is fixedly connected with the tube wall that heat conduction is responsible for, described
The conduction wing of heat conduction looped pipeline is connected to heat conduction supervisor.
The wall-hung condensing gas furnace, wherein the conduction wing is in the form of annular discs, and the discoid conduction wing is along heat conduction looped pipeline axis
To being uniformly distributed, the quantity of discoid conduction wing is at least 3.
The wall-hung condensing gas furnace, wherein it is in flaabellum shape that few 3 are extended radially outwardly on the same cross section of heat conduction looped pipeline
Wing is conducted, multiple conduction in same level are finned at exhaust fan-shaped heat transfer device, and the exhaust fan-shaped heat transfer device is at least 3
It is a.
The wall-hung condensing gas furnace, wherein setting condensation water collection pond below the thermal energy recovery room, the condensed water are received
The bottom of Ji Chi connects condensate draining pipe.
The wall-hung condensing gas furnace, wherein be provided with exhaust fan in the smoke-intake pipe or smoke exhaust pipe.
The wall-hung condensing gas furnace, wherein cellular active peptide adsorbent equipment is set in the smoke exhaust pipe.
In the technical solution that the utility model embodiment provides, the wall-hung condensing gas furnace of the waste heat secondary recovery passes through thermal energy
The rotary motion setting of secondary heat exchanger, fully improves the heat exchanger effectiveness of secondary heat exchanger and high-temperature flue gas in recovery room, if
The contact surface of secondary heat exchanger and flue gas can not only be significantly greatly increased by setting the conduction wing of the flaabellum shape on secondary heat exchanger, and can be right
The flue gas of combustion chamber forms suction, promotes flow of flue gas, improves heat transference efficiency, the activated carbon adsorption dress being arranged in smoke exhaust pipe
Set the discharge for reducing the pernicious gas in flue gas.The wall-hung condensing gas furnace has simple and reasonable, energy conservation and environmental protection, heat transfer rate
The characteristics of height, safety non-pollution.
Description of the drawings
Fig. 1 is the structural schematic diagram of the wall-hung condensing gas furnace of waste heat secondary recovery in the utility model embodiment one；
Fig. 2 is that the structure of the thermal energy recovery room of the wall-hung condensing gas furnace of waste heat secondary recovery in the utility model embodiment one is shown
It is intended to；
Fig. 3 is the structural schematic diagram of the wall-hung condensing gas furnace of waste heat secondary recovery in the utility model embodiment two.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those skilled in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
It should be noted that when element is expressed " being fixed on " another element, it can directly on another element,
Or may exist one or more elements placed in the middle therebetween.When an element is expressed " connection " another element, it can be with
It is directly to another element or may exist one or more elements placed in the middle therebetween.Used in this specification
The orientation or position of the instructions such as term " vertically ", " horizontal ", "left", "right", "upper", "lower", "inner", "outside", " bottom "
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, without
It is instruction or implies that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore not
It can be construed as a limitation of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and cannot understand
To indicate or implying relative importance.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of technical staff in art field is identical.Art used in the description of the utility model in this specification
Language is intended merely to the purpose of description specific embodiment, is not intended to limitation the utility model.Art used in this specification
Language "and/or" includes any and all combinations of one or more relevant Listed Items.In addition, sheet disclosed below
Involved technical characteristic can be combined with each other as long as they do not conflict with each other in utility model different embodiments.
The wall-hung condensing gas furnace of a kind of waste heat secondary recovery as shown in Figure 1 comprising shell 1 is set to adding in shell 1
Thermal, heat-energy recovering apparatus, driving device 4, smoke exhaust pipe 2, water inlet pipe 3, outlet pipe 5 and heating return pipe 11.Wherein, described
Heating device includes combustion chamber 6 and the main heat exchanger 7 that is arranged in combustion chamber 6, and the heat-energy recovering apparatus includes that setting exists
Thermal energy recovery room 8 in shell 1 and the secondary heat exchanger 9 in thermal energy recovery room 8,8 lower end side of thermal energy recovery room
It is connected to combustion chamber 6 by smoke-intake pipe 10,8 upper end of thermal energy recovery room is connected to smoke exhaust pipe 2；Pair heat exchanger 9 upper end connect into
Water pipe 3,9 lower end of secondary heat exchanger connect main heat exchanger 7, wherein the pair heat exchanger 9 includes vertically disposed heat conduction master
Pipe 91 and the heat conduction looped pipeline 92 being set on heat conduction supervisor 91, multiple conduction wings 921 that the heat conduction looped pipeline 92 radially extends,
The heat conduction looped pipeline 92 is rotationally connected with 8 inner wall of thermal energy recovery room, the driving device by the fixing bearing 922 positioned at both ends
It is connect with heat conduction looped pipeline 92.In above-mentioned apparatus, the high-temperature flue gas that combustion chamber 6 generates flows into thermal energy recovery room 8 along smoke-intake pipe 10
Middle by carry out thermal energy recycling, heat conduction looped pipeline 92 carries out rotation under the drive of driving device, to drive in thermal energy recovery room 8
High-temperature flue gas convection current, improves the thermal energy organic efficiency of heat conduction looped pipeline and high-temperature flue gas, and conduction wing 921 greatly improves heat conduction pair
The contact surface of pipe and high-temperature flue gas, further increases thermal energy organic efficiency.
In above-mentioned wall-hung boiler, the cold water in heating return pipe 11 and cold water pipe 17 initially enters thermal energy along water inlet pipe 3 and returns
It receives and carries out being thermally formed preheating water in room 8, the main heat that preheating water flows to combustion chamber 6 along the heat conduction supervisor of secondary heat exchanger 9 is handed over
The hot water generated after heat exchange again outflow outlet pipe 5 is carried out in parallel operation 7.The wall-hung condensing gas furnace is not only simple in structure, and
And the high-temperature flue gas generated in combustion chamber is made full use of, thermal energy organic efficiency is greatly improved, capacity usage ratio is high.
In embodiment 1 as shown in Figs. 1-2, rotary shaft 923 that secondary heat exchanger 9 is formed by 92 upper and lower side of heat conduction looped pipeline
It is connected with the fixing bearing 922 for being fixed on 8 inner wall of thermal energy recovery room, the driving device 4 includes being arranged in rotary shaft 923
Transmission gear 41 and the driving motor 42 that is connect with transmission gear 41, the rotary shaft 923 connect into line unit with transmission gear 41
It connects, the transmission gear 41 is connected to driving motor 42 by V belt translation or chain drive, and the driving motor 42 is fixed on thermal energy
On the inner wall of recovery room 8.In the present embodiment, the transmission gear 41 passes through with the output gear on the output shaft of driving motor 42
Chain drive, the work of driving motor 42 are rotated by chain-driving transmission gear 41, to drive 92 autobiography of heat conduction looped pipeline, and are led
Conduction wing 921 on hot looped pipeline 92 does the movement of cutting high-temperature flue gas, and hot transmission is carried out with flue gas.
In the present embodiment, in order to control the rotating speed of heat conduction looped pipeline 92, driving device 4 further includes speed reducer, speed reducer difference
With driving motor and rotation axis connection (being not drawn into attached drawing).
In order to improve heat transfer efficiency of the heat conduction looped pipeline 92 to heat conduction supervisor 91, the heat conduction looped pipeline 92 is with heat conduction supervisor's 91
The thermal conductive cavity that tube wall is formed is connected with conduction wing 921, and conductive fluid is filled in thermal conductive cavity, and the conductive fluid is water or kerosene.
In other embodiment, in order to simplify structure, reduce manufacturing cost, improve heat conduction efficiency, heat conduction looped pipeline 92 with lead
The tube wall of heat supervisor 91 is fitted closely and is fixedly connected, and the conduction wing 921 of the heat conduction looped pipeline 92 is connected to heat conduction supervisor 91.Into
Cold water in water pipe is responsible for after 91 upper ends enter in pipe by heat conduction in flow direction conduction wing 921, conducts wing 921 in rotary course,
Cold water in conduction wing 921 is come into full contact with 8 high temperature flue gas of thermal energy recovery room and carries out the preheating formed after hot transmission
Water.It is provided with exhaust fan in the smoke-intake pipe 10 or smoke exhaust pipe 2, by the high-temperature flue gas sucking thermal energy recovery room 8 of combustion chamber 6.
In the present embodiment, heat conduction looped pipeline 92 extends radially outwardly to few 3 flaabellum shapes conduction wing on same cross section
921, multiple conduction in same level are finned at exhaust fan-shaped heat transfer device, and the exhaust fan-shaped heat transfer device is at least 3.
Above-mentioned exhaust fan-shaped heat transfer device can not only fully improve the thermal energy recycling of flue gas, and form swirling eddy by rotation,
Certain negative pressure is formed in thermal energy recovery room 8, and suction is generated to the flue gas in combustion chamber 6, promotes the flowing of high-temperature flue gas, thus may be used
It reduces the quantity of exhaust fan or saves the exhaust fan in device, simplify the structure of the wall-hung condensing gas furnace.
8 lower section setting condensation water collection pond 12 of the thermal energy recovery room, the bottom connection in the condensation water collection pond 12 are cold
Condensate drainpipe 13.The bottom in the condensation water collection pond 12 is ramped bottom surface, 13 bottom least significant end connection of condensate draining pipe
Condensate draining pipe 13, in this way setting are convenient for that condensed water is quickly discharged.
Alveolate activated carbon adsorbent equipment 14 is set in the smoke exhaust pipe 2.Setting can reduce pernicious gas in exhaust gas in this way
Discharge.
In the present embodiment, in order to further increase the heat transference efficiency of device, the pair heat exchanger 9 and main heat exchanger
7 material is carbon ink alkene or superconductor.
In order to further increase heat utilization rate, the wall-hung condensing gas furnace further includes the plate heat exchanger being located in shell 1
15, the plate heat exchanger 15 is located at below combustion chamber, and the water inlet pipe 3 and outlet pipe 5 are separately connected plate heat exchanger both ends.
In plate heat exchanger 15, the cold water in water inlet pipe 3 carries out heat exchange with the hot water in outlet pipe 5, to the cold water in water inlet pipe 3
Tentatively heated.
In addition, pressure is excessive in water pipe after heating in order to prevent, it is provided in above-mentioned wall-hung condensing gas furnace and is connected with water inlet pipe
Expansion tank.It is both provided with water flow control valve on the water inlet of the water inlet pipe and the water outlet of outlet pipe.
In embodiment 2 as shown in Figure 3, the conduction wing 16 is in the form of annular discs, and the discoid conduction wing 16 is along heat conduction pair
Pipe 92 is axial to be uniformly distributed, and the quantity of discoid conduction wing 16 is 10.The tube wall of the heat conduction looped pipeline 92 and heat conduction supervisor 91
The thermal conductive cavity of formation is connected with conduction wing 921, and conductive fluid is filled in thermal conductive cavity.Other settings are same as Example 1.
In the wall-hung condensing gas furnace of above-mentioned waste heat secondary recovery, the heating return pipe 11 and cold water pipe 17 are respectively communicated with into water
Pipe 3,5 water outlet of outlet pipe are connected to heater inlet pipe and hot-water line, when above-mentioned wall-hung condensing gas furnace work, heating return pipe 11 and cold
Cold water in water pipe 17, which enters along water inlet pipe 3 in plate heat exchanger 15, to be preheated, and the pair heat of thermal energy recovery room 8 is subsequently entered
In the heat conduction supervisor of exchanger 9 after heating, then generated after flowing to the heat exchange carried out in the main heat exchanger 7 of combustion chamber 6 again
Hot water flow to heater inlet pipe and hot-water line respectively along outlet pipe 5, above-mentioned apparatus can provide the life of heating energy-efficiently
Water and heating water are applied flexibly, combustion gas use cost is reduced.
In the technical solution that the utility model embodiment provides, the wall-hung condensing gas furnace of the waste heat secondary recovery passes through thermal energy
The rotary motion setting of secondary heat exchanger, fully improves the heat exchanger effectiveness of secondary heat exchanger and high-temperature flue gas in recovery room, if
The contact surface of secondary heat exchanger and flue gas can not only be significantly greatly increased by setting the conduction wing of the flaabellum shape on secondary heat exchanger, and can be right
The flue gas of combustion chamber forms suction, promotes flow of flue gas, improves heat transference efficiency, the activated carbon adsorption dress being arranged in smoke exhaust pipe
Set the discharge for reducing the pernicious gas in flue gas.The wall-hung condensing gas furnace is not only simple in structure, capacity usage ratio is high, thermal energy recycling
Rate is high, energy conservation and environmental protection.
The apparatus embodiments described above are merely exemplary, wherein the unit illustrated as separating component can
It is physically separated with being or may not be, the component shown as unit may or may not be physics list
Member, you can be located at a place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of module achieve the purpose of the solution of this embodiment.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The utility model design is subject to equivalent substitution or change, and all these changes or replacement should all belong to appended by the utility model
Scope of the claims.
Claims (10)
1. a kind of wall-hung condensing gas furnace of waste heat secondary recovery, which is characterized in that filled including shell, the heating being set in shell
Set, heat-energy recovering apparatus, driving device, smoke exhaust pipe, water inlet pipe and outlet pipe, wherein the heating device include combustion chamber and
Main heat exchanger in the combustion chamber is set, and the heat-energy recovering apparatus includes the thermal energy recovery room being arranged in shell and is located at
The indoor secondary heat exchanger of thermal energy recycling, the thermal energy recovery room lower end side are connected to combustion chamber, thermal energy recycling by smoke-intake pipe
Room upper end is connected to smoke exhaust pipe；The pair heat exchanger upper end connects water inlet pipe, and secondary heat exchanger lower end connects main heat exchanger,
In, the pair heat exchanger includes that the heat conduction looped pipeline that heat conduction is responsible for, the heat conduction are responsible for and are set in vertically disposed heat conduction
Supervisor both ends are connected to water inlet pipe and main heat exchanger respectively, and multiple conduction wings that the heat conduction looped pipeline radially extends are described
Heat conduction looped pipeline is rotationally connected with thermal energy by the fixing bearing for being arranged at heat conduction looped pipeline both ends and recycles chamber interior walls, the driving device
It is connect by V belt translation or chain drive with heat conduction looped pipeline.
2. wall-hung condensing gas furnace according to claim 1, which is characterized in that it is described pair heat exchanger by heat conduction looped pipeline above and below
The rotary shaft of setting is held to be connected with the fixing bearing for being fixed on thermal energy recycling chamber interior walls, the driving device includes that setting is being revolved
Transmission gear in shaft and the driving motor being connect with transmission gear, the rotary shaft are keyed with transmission gear, institute
It states transmission gear and driving motor is connected to by V belt translation or chain drive, the driving motor is fixed on the inner wall of thermal energy recovery room
On.
3. wall-hung condensing gas furnace according to claim 2, which is characterized in that driving device further includes speed reducer, speed reducer point
Not with driving motor and rotation axis connection.
4. wall-hung condensing gas furnace according to claim 3, which is characterized in that the tube wall shape of the heat conduction looped pipeline and heat conduction supervisor
At thermal conductive cavity be connected with conduction wing inner cavity, conductive fluid is filled in thermal conductive cavity.
5. wall-hung condensing gas furnace according to claim 3, which is characterized in that the tube wall that heat conduction looped pipeline is responsible for heat conduction closely pastes
Merging is fixedly connected, and the conduction wing of the heat conduction looped pipeline is connected to heat conduction supervisor.
6. wall-hung condensing gas furnace according to claim 4 or 5, which is characterized in that the conduction wing is in the form of annular discs, the disk
Shape conduction wing is axially uniformly distributed along heat conduction looped pipeline, and the quantity of discoid conduction wing is at least 3.
7. wall-hung condensing gas furnace according to claim 4 or 5, which is characterized in that on the same cross section of heat conduction looped pipeline radially to
Outer to extend to few 3 in flaabellum shape conduction wing, multiple conduction in same level are finned at exhaust fan-shaped heat transfer device, described
Exhaust fan-shaped heat transfer device is at least 3.
8. wall-hung condensing gas furnace according to claim 7, which is characterized in that setting condensed water is received below the thermal energy recovery room
The bottom of Ji Chi, the condensation water collection pond connect condensate draining pipe.
9. wall-hung condensing gas furnace according to claim 8, which is characterized in that the row of being provided in the smoke-intake pipe or smoke exhaust pipe
Fan.
10. wall-hung condensing gas furnace according to claim 9, which is characterized in that cellular active peptide is arranged in the smoke exhaust pipe
Adsorbent equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820419332.7U CN207990987U (en) | 2018-03-26 | 2018-03-26 | A kind of wall-hung condensing gas furnace of waste heat secondary recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820419332.7U CN207990987U (en) | 2018-03-26 | 2018-03-26 | A kind of wall-hung condensing gas furnace of waste heat secondary recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207990987U true CN207990987U (en) | 2018-10-19 |
Family
ID=63830021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820419332.7U Expired - Fee Related CN207990987U (en) | 2018-03-26 | 2018-03-26 | A kind of wall-hung condensing gas furnace of waste heat secondary recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207990987U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109330226A (en) * | 2018-10-31 | 2019-02-15 | 张凯 | A kind of dressing preventing atomization dressing table |
-
2018
- 2018-03-26 CN CN201820419332.7U patent/CN207990987U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109330226A (en) * | 2018-10-31 | 2019-02-15 | 张凯 | A kind of dressing preventing atomization dressing table |
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| GR01 | Patent grant | ||
| 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: 20181019 Termination date: 20210326 |