CN212619305U - Boiler for indoor heating - Google Patents

Boiler for indoor heating Download PDF

Info

Publication number
CN212619305U
CN212619305U CN202021368698.XU CN202021368698U CN212619305U CN 212619305 U CN212619305 U CN 212619305U CN 202021368698 U CN202021368698 U CN 202021368698U CN 212619305 U CN212619305 U CN 212619305U
Authority
CN
China
Prior art keywords
boiler
air
heat exchange
water
pipe
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
Application number
CN202021368698.XU
Other languages
Chinese (zh)
Inventor
祁镔权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xiangchen Construction Co ltd
Original Assignee
Beijing Xiangchen Construction Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Xiangchen Construction Co ltd filed Critical Beijing Xiangchen Construction Co ltd
Priority to CN202021368698.XU priority Critical patent/CN212619305U/en
Application granted granted Critical
Publication of CN212619305U publication Critical patent/CN212619305U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage

Abstract

The utility model relates to the technical field of domestic heating equipment, in particular to an indoor heating boiler, wherein the smoke of the boiler is subjected to air heat exchange, hot air is used for heating the interior of a room, and then the smoke is subjected to water heat exchange, hot water is used for domestic use, so that the practicability is improved; the boiler comprises a boiler outer main body, a boiler water inlet pipe, a boiler inner container and a boiler water outlet pipe, wherein a coal cinder filter screen is arranged in a cavity, the boiler water inlet pipe and the boiler water outlet pipe both penetrate through the boiler outer main body and are communicated with the boiler inner container, a water supplementing groove is communicated with the right end of the boiler inner container, a boiler chimney is arranged at the upper end of the boiler outer main body, and valves are respectively arranged on the boiler water inlet pipe and the boiler water outlet pipe; the boiler flue flange is communicated with the left end of the air heat exchange box, the right end of the air heat exchange box is communicated with the input end of the flue pipe, the output end of the flue pipe is communicated with the left end of the water heat exchange box, and the upper end of the water heat exchange box is communicated with the lower end of the smoke outlet.

Description

Boiler for indoor heating
Technical Field
The utility model relates to a life heating equipment's technical field especially relates to a boiler is used in indoor heating.
Background
As is well known, an indoor heating boiler is an auxiliary device for indoor heating, and is widely used in the field of heating equipment for daily life; the existing boiler for indoor heating comprises a boiler outer main body, a boiler water inlet pipe, a boiler inner container and a boiler water outlet pipe, wherein the boiler outer main body is provided with a cavity, a coal cinder filter screen is arranged in the cavity, the boiler water inlet pipe and the boiler water outlet pipe both penetrate through the boiler outer main body and are communicated with the boiler inner container, a water supplementing groove is arranged at the right end of the boiler outer main body and is communicated with the right end of the boiler inner container, a water storage chamber is arranged in the boiler inner container, a boiler chimney is arranged at the upper end of the boiler outer main body, and valves are respectively arranged on the boiler water inlet pipe and the boiler; when the existing boiler for indoor heating is used, the outer main body of the boiler is placed above the indoor ground, a valve of a water inlet pipe of the boiler is opened at first, water is injected into a water storage chamber of an inner container of the boiler, heating coal is ignited to heat the water, a valve of a water outlet pipe of the boiler is opened, hot water is discharged, and high-temperature smoke generated by burning the heating coal is discharged through a chimney of the boiler; present for the indoor heating boiler use discovery, the boiler is not done the heat preservation and is handled, leads to the furnace body easily to give off the heat, and direct exhaust flue gas contains more heat simultaneously, leads to the heat utilization lower, leads to the indoor heating effect relatively poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a boiler flue gas passes through air heat exchange, and the hot-air heats indoor, and then the flue gas passes through the hydrothermal exchange, and hot water is used for the life to use, improves the indoor heating of practicality and uses the boiler.
The utility model discloses a boiler for indoor heating, including boiler outer main part, boiler inlet tube, boiler inner bag and boiler outlet pipe, the boiler outer main part is equipped with the cavity, is provided with the cinder filter screen in the cavity, boiler inlet tube and boiler outlet pipe all pass the boiler outer main part and communicate with the boiler inner bag, the boiler outer main part right-hand member is provided with the moisturizing groove, the moisturizing groove is communicated with boiler inner bag right-hand member, the boiler inner bag is provided with the reservoir chamber, the upper end of the boiler outer main part is provided with the boiler chimney, be provided with the valve on boiler inlet tube and the boiler outlet pipe respectively; still include air heat exchange box, defeated tobacco pipe, hydrothermal exchange box and exhaust port, boiler chimney output is provided with boiler chimney flange, boiler chimney flange and air heat exchange box left end intercommunication, and air heat exchange box right-hand member and defeated tobacco pipe input intercommunication, defeated tobacco pipe output and hydrothermal exchange box left end intercommunication, hydrothermal exchange box upper end and exhaust port lower extreme intercommunication, the exhaust port lower extreme is provided with the exhaust port flange.
The utility model discloses a boiler for indoor heating, still include the air exchanger import, the air exchange intake pipe, the air heat exchange pipe, air exchange outlet duct and air exchanger export, air exchanger import left end, boiler chimney output and air heat exchange box left end communicate, air exchange intake pipe left end is linked together with air exchanger import right-hand member, air exchange intake pipe right-hand member is linked together with air heat exchange tube input, air heat exchange tube output and air exchange outlet duct left end communicate, air exchange outlet duct right-hand member and air exchanger export left end communicate, air exchanger export right-hand member, defeated tobacco pipe input and air heat exchange box right-hand member are linked together.
The utility model discloses a boiler for indoor heating still includes water heat exchanger intake pipe, water heat exchange pipe, water heat exchanger outlet duct, water heat exchanger export, domestic water exit tube and domestic water and advances the pipe, water heat exchanger intake pipe left end, defeated tobacco pipe output and water heat exchange case left end intercommunication, water heat exchanger intake pipe upper end is linked together with water heat exchange pipe lower extreme, water heat exchange pipe upper end is linked together with water heat exchanger outlet duct lower extreme, water heat exchanger outlet duct upper end is linked together with water heat exchanger export lower extreme, water heat exchanger export upper end and exhaust port input are linked together.
The utility model discloses a boiler for indoor heating still includes water heat exchange case lid and bolt, and the water heat exchange case lid passes through bolt and water heat exchange case spiro union, and water heat exchange case lid is located water heat exchange case upper end.
The utility model discloses a boiler for indoor heating still includes motor floorbar, motor, fan blade, and motor floorbar and air heat exchange box inner wall connection, the motor is installed in the upper end of motor floorbar, and the fan blade is installed on the output shaft of motor.
The utility model discloses a boiler for indoor heating still includes shutter, shutter connecting rod and shutter support, and the shutter is installed in air heat exchange box right side exit, shutter connecting rod and shutter series connection, and the shutter support mounting is on air heat exchange box inner wall, and shutter connecting rod and shutter support pass through the round pin hub connection.
The utility model discloses a boiler for indoor heating still includes the air-blower, and the air-blower is installed subaerial in outer main part right side of boiler, and the air-blower output is linked together with the outer main part right-hand member of boiler.
The utility model discloses a boiler for indoor heating still includes heat-resisting heat preservation cotton and boiler shell, and the cladding of heat-resisting heat preservation cotton is on the outer wall of the outer main part of boiler, and the cladding of boiler shell is on the cotton outer wall of heat-resisting heat preservation.
Compared with the prior art, the beneficial effects of the utility model are that: boiler flue gas passes through boiler chimney flange and gets into air heat exchange box and carry out air heat exchange, and hot-air heats indoor, then the flue gas gets into water heat exchange box through defeated tobacco pipe and carries out the hydrothermal exchange, and hot water is used for the life to use, improves the practicality.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the interior of the air heat exchange cabinet;
FIG. 3 is a schematic left side view of the interior of the air heat exchange cabinet;
FIG. 4 is a schematic view of the internal structure of the water heat exchange tank;
in the drawings, the reference numbers: 1. a boiler outer body; 2. a coal cinder filter screen; 3. a boiler water inlet pipe; 4. a boiler inner container; 5. a water outlet pipe of the boiler; 6. a water replenishing tank; 7. a boiler chimney; 8. a boiler chimney flange; 9. an air heat exchange box; 10. a smoke conveying pipe; 11. a water heat exchange tank; 12. a smoke outlet flange; 13. a smoke outlet; 14. an air exchanger inlet; 15. an air exchange inlet pipe; 16. An air heat exchange tube; 17. an air exchange outlet pipe; 18. an air exchanger outlet; 19. a water heat exchanger air inlet pipe; 20. a water heat exchange tube; 21. a gas outlet pipe of the water heat exchanger; 22. an outlet of the water heat exchanger; 23. a domestic water outlet pipe; 24. a domestic water inlet pipe; 25. a water heat exchange tank cover; 26. a bolt; 27. a motor bottom beam; 28. a motor; 29. a fan blade; 30. a blind window; 31. a shutter connecting rod; 32. a shutter support; 33. a blower; 34. heat-resistant heat-preservation cotton; 35. And (4) a boiler shell.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, the utility model discloses a boiler for indoor heating, including the outer main part 1 of boiler, boiler inlet tube 3, boiler inner bag 4 and boiler outlet pipe 5, the outer main part 1 of boiler is equipped with the cavity, be provided with cinder filter screen 2 in the cavity, boiler inlet tube 3 and boiler outlet pipe 5 all pass the outer main part 1 of boiler and communicate with boiler inner bag 4, the right-hand member of the outer main part 1 of boiler is provided with moisturizing groove 6, moisturizing groove 6 is linked together with the right-hand member of boiler inner bag 4, boiler inner bag 4 is provided with the reservoir chamber, the upper end of the outer main part 1 of boiler is provided with boiler chimney 7, be provided with the valve on boiler inlet tube 3 and the boiler outlet pipe 5 respectively; the device also comprises an air heat exchange box 9, a smoke conveying pipe 10, a water heat exchange box 11 and a smoke outlet 13, wherein a boiler chimney flange 8 is arranged at the output end of a boiler chimney 7, the boiler chimney flange 8 is communicated with the left end of the air heat exchange box 9, the right end of the air heat exchange box 9 is communicated with the input end of the smoke conveying pipe 10, the output end of the smoke conveying pipe 10 is communicated with the left end of the water heat exchange box 11, the upper end of the water heat exchange box 11 is communicated with the lower end of the smoke outlet 13, and a smoke outlet flange 12 is arranged at the lower end of the smoke outlet 13; boiler flue gas gets into air heat exchange box 9 through boiler chimney flange 8 and carries out air heat exchange, and hot-air heats indoor, then the flue gas gets into hydrothermal heat exchange box 11 through defeated tobacco pipe 10 and carries out the hydrothermal exchange, and hot water is used for the life to use, improves the practicality.
The utility model discloses a boiler for indoor heating, still include air exchanger import 14, air exchange intake pipe 15, air heat exchange pipe 16, air exchange outlet duct 17 and air exchanger export 18, the 14 left ends of air exchanger import, boiler chimney 7 output and the 9 left ends of air heat exchange box communicate, the 15 left ends of air exchange intake pipe are linked together with the 14 right ends of air exchanger import, the 15 right ends of air exchange intake pipe are linked together with the 16 input ends of air heat exchange pipe, the 16 output ends of air heat exchange pipe communicate with the 17 left ends of air exchange outlet duct, the 17 right ends of air exchange outlet duct communicate with the 18 left ends of air exchanger export, the 18 right ends of air exchanger export, the 10 input ends of smoke conveying pipe and the 9 right ends of air heat exchange box communicate; the flue gas carries out the heat exchange through air heat exchange pipe 16 and indoor air, improves the indoor heating effect, through dismouting air exchange intake pipe 15 and air exchanger export 18, the equipment maintenance of being convenient for improves the convenience.
The utility model discloses a boiler for indoor heating, still include water heat exchanger intake pipe 19, water heat exchange tube 20, water heat exchanger outlet duct 21, water heat exchanger export 22, domestic water exit tube 23 and domestic water inlet pipe 24, water heat exchanger intake pipe 19 left end, defeated tobacco pipe 10 output and water heat exchange box 11 left end communicate, water heat exchanger intake pipe 19 upper end is linked together with water heat exchange tube 20 lower extreme, water heat exchange tube 20 upper end is linked together with water heat exchanger outlet duct 21 lower extreme, water heat exchanger outlet duct 21 upper end is linked together with water heat exchanger export 22 lower extreme, water heat exchanger export 22 upper end is linked together with the input of exhaust port 13; the flue gas carries out heat exchange through water heat exchange pipe 20 and domestic water, improves the temperature of water, and the hot water is used for the life and uses, through dismouting water heat exchanger intake pipe 19 and water heat exchanger export 22, and the equipment maintenance of being convenient for improves the convenience.
The boiler for indoor heating of the utility model also comprises a water heat exchange box cover 25 and a bolt 26, wherein the water heat exchange box cover 25 is in threaded connection with the water heat exchange box 11 through the bolt 26, and the water heat exchange box cover 25 is positioned at the upper end of the water heat exchange box 11; by disassembling the water heat exchange box cover 25, the whole maintenance and replacement of the exchanger are facilitated, and the convenience and the practicability are improved.
The utility model discloses an indoor heating boiler still includes motor floorbar 27, motor 28, fan blade 29, and motor floorbar 27 and air heat exchange box 9 inner wall connection, and motor 28 installs in the upper end of motor floorbar 27, and fan blade 29 installs on the output shaft of motor 28; by turning on the motor 28, the motor 28 works to drive the fan blade 29 to rotate, so that heat emitted by the air heat exchange tube 16 is rapidly output, the heat exchange efficiency is improved, and the practicability is improved.
The utility model discloses a boiler for indoor heating still includes shutter 30, shutter connecting rod 31 and shutter support 32, and shutter 30 is installed in the right side exit of air heat exchange box 9, and shutter connecting rod 31 and shutter 30 series connection are connected, and shutter support 32 is installed on the inner wall of air heat exchange box 9, and shutter connecting rod 31 and shutter support 32 are through the round pin hub connection; by adjusting the angle of the louver 30, hot air is blown in a specified direction, and the practicability is improved.
The boiler for indoor heating of the utility model also comprises an air blower 33, the air blower 33 is arranged on the right ground of the boiler outer main body 1, and the output end of the air blower 33 is communicated with the right end of the boiler outer main body 1; the blower 33 is turned on to blow air to the chamber of the outer main body 1 of the boiler, so that the coal burning efficiency of the furnace chamber is improved.
The boiler for indoor heating of the utility model also comprises heat-resistant heat-preservation cotton 34 and a boiler shell 35, wherein the heat-resistant heat-preservation cotton 34 is coated on the outer wall of the boiler outer body 1, and the boiler shell 35 is coated on the outer wall of the heat-resistant heat-preservation cotton 34; through setting up heat-resisting heat preservation cotton 34 and boiler shell 35, keep warm to the outer main part 1 of boiler, reduce calorific loss, improve the practicality simultaneously.
The utility model discloses a boiler for indoor heating, it is at the during operation, at first open boiler intake pipe valve, inject boiler inner bag reservoir chamber with water, light the heating coal, heat up water, then open boiler outlet pipe valve, the hot water is discharged, the high temperature flue gas that the heating coal burns passes through boiler chimney flange and gets into air heat exchange box and carry out the air heat exchange, the hot-air heats indoor, then the flue gas gets into the water heat exchange box through defeated tobacco pipe and carries out the hydrothermal exchange, the low temperature flue gas through the exhaust port discharge can.
The installation mode, the connection mode or the arrangement mode of the indoor heating boiler of the utility model are common mechanical modes, and the installation mode, the connection mode or the arrangement mode can be implemented as long as the beneficial effects can be achieved; the utility model discloses a motor and air-blower of boiler for indoor heating are purchase on the market, and this technical staff only need according to its subsidiary service instruction install and operate can in the industry.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A boiler for indoor heating comprises a boiler outer main body (1), a boiler water inlet pipe (3), a boiler inner container (4) and a boiler water outlet pipe (5), wherein the boiler outer main body (1) is provided with a cavity, a coal cinder filter screen (2) is arranged in the cavity, the boiler water inlet pipe (3) and the boiler water outlet pipe (5) penetrate through the boiler outer main body (1) and are communicated with the boiler inner container (4), a water supplementing groove (6) is arranged at the right end of the boiler outer main body (1), the water supplementing groove (6) is communicated with the right end of the boiler inner container (4), the boiler inner container (4) is provided with a water storage chamber, a boiler chimney (7) is arranged at the upper end of the boiler outer main body (1), and valves are respectively arranged on the boiler water inlet pipe (3) and the boiler; the device is characterized by further comprising an air heat exchange box (9), a smoke conveying pipe (10), a water heat exchange box (11) and a smoke outlet (13), wherein a boiler chimney flange (8) is arranged at the output end of the boiler chimney (7), the boiler chimney flange (8) is communicated with the left end of the air heat exchange box (9), the right end of the air heat exchange box (9) is communicated with the input end of the smoke conveying pipe (10), the output end of the smoke conveying pipe (10) is communicated with the left end of the water heat exchange box (11), the upper end of the water heat exchange box (11) is communicated with the lower end of the smoke outlet (13), and the lower end of the smoke outlet (13) is provided with a smoke outlet flange (12).
2. An indoor heating boiler according to claim 1, further comprising an air exchanger inlet (14), an air exchange intake duct (15), an air heat exchange duct (16), the boiler flue gas heat exchanger comprises an air exchange air outlet pipe (17) and an air exchanger outlet (18), wherein the left end of an air exchanger inlet (14), the output end of a boiler flue pipe (7) and the left end of an air heat exchange box (9) are communicated, the left end of the air exchange air inlet pipe (15) is communicated with the right end of the air exchanger inlet (14), the right end of the air exchange air inlet pipe (15) is communicated with the input end of an air heat exchange pipe (16), the output end of the air heat exchange pipe (16) is communicated with the left end of the air exchange air outlet pipe (17), the right end of the air exchange air outlet pipe (17) is communicated with the left end of the air exchanger outlet (18), and the right end of the air exchanger outlet (18), the input.
3. An indoor heating boiler according to claim 2, further comprising a water heat exchanger air inlet pipe (19), a water heat exchange pipe (20), a water heat exchanger air outlet pipe (21), a water heat exchanger outlet (22), a domestic water outlet pipe (23) and a domestic water inlet pipe (24), wherein the left end of the water heat exchanger air inlet pipe (19), the output end of the smoke delivery pipe (10) and the left end of the water heat exchange box (11) are communicated, the upper end of the water heat exchanger air inlet pipe (19) is communicated with the lower end of the water heat exchange pipe (20), the upper end of the water heat exchange pipe (20) is communicated with the lower end of the water heat exchanger air outlet pipe (21), the upper end of the water heat exchanger air outlet pipe (21) is communicated with the lower end of the water heat exchanger outlet (22), and the upper end of the water heat.
4. An indoor heating boiler according to claim 3, further comprising a water heat exchange tank cover (25) and bolts (26), the water heat exchange tank cover (25) being threadedly coupled to the water heat exchange tank (11) by the bolts (26), the water heat exchange tank cover (25) being located at an upper end of the water heat exchange tank (11).
5. An indoor heating boiler according to claim 4, further comprising a motor bottom beam (27), a motor (28) and a fan blade (29), wherein the motor bottom beam (27) is connected with the inner wall of the air heat exchange box (9), the motor (28) is installed at the upper end of the motor bottom beam (27), and the fan blade (29) is installed on an output shaft of the motor (28).
6. An indoor heating boiler according to claim 5, further comprising a louver (30), a louver link (31), and a louver holder (32), wherein the louver (30) is installed at a right side outlet of the air heat exchange box (9), the louver link (31) is connected in series with the louver (30), the louver holder (32) is installed on an inner wall of the air heat exchange box (9), and the louver link (31) and the louver holder (32) are connected by a pin.
7. An indoor heating boiler according to claim 6, further comprising a blower (33), the blower (33) being installed on the right side floor of the boiler outer body (1), an output end of the blower (33) being communicated with a right end of the boiler outer body (1).
8. An indoor heating boiler according to claim 7, further comprising heat-resistant insulation wool (34) and a boiler housing (35), wherein the heat-resistant insulation wool (34) is coated on the outer wall of the boiler outer body (1), and the boiler housing (35) is coated on the outer wall of the heat-resistant insulation wool (34).
CN202021368698.XU 2020-07-10 2020-07-10 Boiler for indoor heating Expired - Fee Related CN212619305U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021368698.XU CN212619305U (en) 2020-07-10 2020-07-10 Boiler for indoor heating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021368698.XU CN212619305U (en) 2020-07-10 2020-07-10 Boiler for indoor heating

Publications (1)

Publication Number Publication Date
CN212619305U true CN212619305U (en) 2021-02-26

Family

ID=74705971

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021368698.XU Expired - Fee Related CN212619305U (en) 2020-07-10 2020-07-10 Boiler for indoor heating

Country Status (1)

Country Link
CN (1) CN212619305U (en)

Similar Documents

Publication Publication Date Title
RU196392U1 (en) LONG-BURNING SOLID FUEL BOILER
CN212619305U (en) Boiler for indoor heating
CN101539329B (en) Portable fuel heater unit
CN202101394U (en) Direct-fired box type oil hot air furnace
CN108006962B (en) Gas fan heater
CN207162580U (en) A kind of boiler afterheat utilizes hot-air system
CN202630369U (en) Full automatic biomass fuel hot water boiler
CN206191560U (en) Energy -saving environment -protecting steam boiler
CN208735632U (en) A kind of heat-accumulating burner of ultralow NOx
CN202485204U (en) Double-air-blower double-control energy-saving air heater
CN111256262A (en) Air blower device of air heater
CN206153094U (en) Energy -efficient formula spraying drying system
CN212520769U (en) Alcohol-based fuel gas downward-falling type tobacco curing house
CN205957228U (en) Automatic heating system of civilian living beings
CN204165228U (en) Normal-pressure hot-water boiler
RU110460U1 (en) WALL GAS BOILER
CN110145748A (en) A kind of gaseous state waste gas burning catalytic unit
CN214841648U (en) Domestic electric wall-hung stove
CN108954812A (en) A kind of energy-efficient distributed normal pressure heating boiler of new energy
CN212006069U (en) Air blower device of air heater
CN216924767U (en) Warm air blower for heating gas
CN206496406U (en) A kind of conditioning furnace
CN2784811Y (en) Energy-saving horizontal hot air furnace for greenhouse
CN202630131U (en) Household normal-pressure stove
CN2342318Y (en) Heating stove for shed

Legal Events

Date Code Title Description
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: 20210226

Termination date: 20210710