CN110814127A - Copper pipe winding clamp and method for evaporator and condenser for compressor test - Google Patents
Copper pipe winding clamp and method for evaporator and condenser for compressor test Download PDFInfo
- Publication number
- CN110814127A CN110814127A CN201910823120.4A CN201910823120A CN110814127A CN 110814127 A CN110814127 A CN 110814127A CN 201910823120 A CN201910823120 A CN 201910823120A CN 110814127 A CN110814127 A CN 110814127A
- Authority
- CN
- China
- Prior art keywords
- copper pipe
- core rod
- condenser
- evaporator
- spiral groove
- 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.)
- Pending
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 77
- 239000010949 copper Substances 0.000 title claims abstract description 77
- 238000004804 winding Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002023 wood Substances 0.000 claims description 9
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/22—Auxiliary equipment, e.g. positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a copper pipe winding clamp and a copper pipe winding method for an evaporator and a condenser for a compressor test. The invention aims to provide a copper pipe winding clamp and a copper pipe winding method for an evaporator and a condenser for a compressor test, which can reduce the copper pipe winding difficulty and improve the winding work efficiency.
Description
Technical Field
The invention belongs to the field of compressor reliability tests, and particularly relates to a copper pipe winding clamp and a copper pipe winding method for an evaporator and a condenser for a compressor test.
Background
The refrigerator compressor is the heart of a refrigerator refrigerating system, and the reliability of the refrigerator compressor directly influences the service life of the refrigerator and the use experience of a user. In the reliability test of the compressor, spiral copper pipes are often used as the condenser and the evaporator of a small refrigeration system. The heat exchange area requirements of the evaporator and the condenser are different for compressors with different refrigerating capacity ranges and different types of reliability life tests. Meanwhile, the condenser and the evaporator need to be replaced in time within a certain experimental period so as to ensure the reliability of data after the reliability life test. The existing winding method is to manually turn the copper pipe into a spiral shape on a smooth core rod, because the diameter of the copper pipe is large, large force is needed in the winding process, when the stress is not uniform, the phenomena of flattening of the copper pipe, inconsistent spiral space, irregular excircle and the like easily occur, the consistency of the spiral shape of the copper pipe is poor, and the experimental result is greatly influenced.
Disclosure of Invention
The invention provides a copper pipe winding clamp and a copper pipe winding method for an evaporator and a condenser for a compressor test, which aim to overcome the defects in the prior art and reduce the winding difficulty of a copper pipe and improve the winding work efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a copper pipe coiling anchor clamps of evaporimeter and condenser for compressor test, includes support and plug, the plug rotates around self axis to be connected and sets up on the support, be equipped with the helicla flute of arranging with the plug is coaxial on the outer wall of plug, the one end of helicla flute is equipped with the fixation clamp of fixed copper pipe initiating terminal, the support is equipped with the upper cover plate that acts on copper pipe and helicla flute and compress tightly in the top of plug. The mandrel is positioned on the holder and the mandrel can be rotated about its own axis. The fixing clamp fixes the starting end of the copper pipe in the spiral groove, when the core rod rotates, the copper pipe enters the spiral groove, and the upper cover plate above the core rod can act on the copper pipe to press the copper pipe into the spiral groove. Therefore, the copper pipe can be bent along the spiral direction of the spiral groove in the rotation process of the core rod, the stress is uniform in the forming process, the consistency of the spiral shape is ensured, and the formed copper pipe has better flowing performance and heat exchange effect.
Preferably, the spiral grooves are arranged at equal intervals along the outer wall of the core rod, and the bottoms of the spiral grooves are in a circular arc shape. The copper pipe pitch keeps the same in the coiling process, and when the copper pipe enters the spiral groove, the outer wall of the copper pipe is attached to the circular arc inner wall of the spiral groove, so that the spiral groove can accurately position the copper pipe, the outer circle is well formed, and the forming quality is ensured.
Preferably, the two ends of the core rod are respectively provided with a cylindrical joint, and a bearing is arranged between the joint and the support. The two ends of the core rod are positioned with the bracket through the bearings, so that the rotation resistance of the core rod is reduced.
Preferably, the joint comprises a long joint at one end of the core rod and a short joint at the other end of the core rod, and the long joint is fixed with a handle. Thereby the staff passes through the handle rotation and drives the plug and rotate, is convenient for control plug slew velocity, reduces the plug and rotates required effort, reduces staff intensity of labour.
Preferably, a handle threaded hole for positioning the handle is formed in the side face of the long joint, a fixing threaded hole communicated with the handle threaded hole is formed in the end face of the long joint, and a fixing screw pressed with the handle is arranged in the fixing threaded hole. Therefore, when the core rod is replaced, the handle can be conveniently detached and installed on a new core rod, the new handle does not need to be processed, and the utilization rate of the handle is improved.
Preferably, the middle part of the fixing clamp is provided with an arc-shaped bulge, the two sides of the spiral groove of the core rod are respectively provided with a mounting hole, and the two ends of the fixing clamp are respectively connected with the mounting holes through wood screws. Effectively prevent that copper pipe coiling in-process initiating terminal from taking place to slide or stick up, it is comparatively convenient to use.
Preferably, the support comprises a lower base plate and a baffle plate vertically fixed to two ends of the lower base plate, a positioning hole for positioning the core rod is formed in the upper end of the baffle plate, and two ends of the upper cover plate are fixedly connected with the top of the baffle plate.
Preferably, the baffle comprises a baffle body and a movable positioning part which is opened or closed by rotating with the upper end of the baffle body, the movable positioning part forms the positioning hole when being closed with the baffle body, and the upper cover plate is fixed with the movable positioning part. Therefore, when copper pipes of different specifications need to be wound, the movable positioning part can be conveniently opened, and positioning of the core rod is released, so that different core rods are replaced, quick disassembly and assembly replacement is realized, and the working efficiency is improved.
Preferably, the movable positioning part is provided with a positioning plate which rotates towards the baffle body, the baffle body is provided with a limiting pin, and the positioning plate is provided with a limiting hole matched with the limiting pin. The limiting pin is matched with the limiting hole of the positioning plate, so that the movable positioning part and the baffle body are limited and stable, and the core rod is reliably positioned.
A copper pipe winding method of an evaporator and a condenser for a compressor test comprises the following steps:
a. fixing the starting end of the copper pipe in the spiral groove of the core rod through a fixing clamp;
b. rotating the core rod to make the copper pipe rotate and bend according to the guide of the spiral groove, and forming the copper pipe in the spiral groove;
c. and separating the core rod from the support, rotating the formed copper pipe along the spiral groove, and taking out the copper pipe.
The invention has the beneficial effects that: (1) the arc-shaped spiral grooves with equal intervals are formed in the core rod, so that the pitches of copper pipes formed by winding are consistent, the outer circle is formed well, the flowing performance and the heat exchange effect are good, and the accuracy of a test result is improved; (2) the winding process is simple and convenient to operate, and the requirements of various test working conditions on the reliability and the service life of the compressor on the diversification of heat exchange areas of the evaporator and the condenser are met; (3) the starting end of the copper pipe is fixed through the fixing clamp and the wood screw, the fastening capacity of the wood screw is strong, the surface of the core rod is not damaged, and the starting end is effectively prevented from sliding or tilting in the winding process of the copper pipe; (4) in the winding process, the copper pipe is uniformly acted by the force of the upper cover plate, so that the phenomena of elongation or flattening and the like of the copper pipe are effectively avoided, and the forming quality is ensured.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a baffle plate according to example 1 of the present invention;
FIG. 3 is a schematic structural view of a mandrel of the present invention;
FIG. 4 is a schematic structural view of a baffle plate in example 2 of the present invention.
In the figure: the fixing device comprises a support 1, a baffle plate 1a, a lower bottom plate 1b, a positioning hole 101, a baffle plate body 11, a movable positioning part 12, a positioning plate 13, a limiting hole 13a, a limiting pin 14, a wood screw 2, a handle 3, a fixing clamp 4, an upper cover plate 5, a core rod 6, a spiral groove 6a, a connector 60, a long connector 60a, a short connector 60b, a handle threaded hole 601, a fixing threaded hole 602, a bearing 7 and a fixing screw 8.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Example 1
In the embodiment shown in fig. 1, the copper pipe winding clamp for the evaporator and the condenser for the compressor test comprises a support 1 and a core rod 6, wherein the support 1 comprises a lower bottom plate 1b and a baffle plate 1a vertically fixed to two ends of the lower bottom plate 1b, the baffle plate 1a and the lower bottom plate 1b are fixed through screws, and the baffle plate 1a and the lower bottom plate 1b can be detached and installed. As shown in fig. 2, the upper end of the baffle plate 1a is provided with a positioning hole 101 for positioning the core rod 6, the two ends of the core rod 6 are respectively provided with a cylindrical joint 60, a bearing 7 is arranged between the joint 60 and the bracket 1, the bearing 7 is arranged in the positioning hole 101, and the core rod 6 is rotatably connected and arranged on the bracket 1 around the axis thereof. Support 1 is equipped with the upper cover plate 5 that acts on copper pipe and helicla flute 6a and compress tightly above plug 6, and the top fixed connection of the both ends of upper cover plate 5 and baffle 1a can be dismantled through the screw between upper cover plate 5 and the baffle 1a and be connected, makes things convenient for upper cover plate 5 and baffle 1a to dismantle.
As shown in fig. 3, the outer wall of the mandrel 6 is provided with spiral grooves 6a arranged coaxially with the mandrel 6, the spiral grooves 6a are arranged at equal intervals along the outer wall of the mandrel 6, and the bottom of the spiral grooves 6a is arc-shaped. One end of the spiral groove 6a is provided with a fixing clamp 4 for fixing the starting end of the copper pipe, and the middle part of the fixing clamp 4 is provided with an arc-shaped bulge. The two sides of the spiral groove 6a of the core rod 6 are respectively provided with a mounting hole, the two ends of the fixing clamp 4 are respectively connected with the mounting holes through the wood screws 2, the fastening action force of the wood screws 2 is strong, the surface of the core rod 6 cannot be damaged, and the service life of the core rod 6 is prolonged. After the starting end of the copper pipe is fixed on the core rod 6 by the wood screw 2 through the fixing clamp 4, the starting end of the copper pipe is effectively prevented from sliding or tilting in the winding process of the copper pipe, and the copper pipe is kept stable in the winding process.
The joint 60 includes a long joint 60a at one end of the core rod 6 and a short joint 60b at the other end of the core rod 6, and the handle 3 is fixed to the long joint 60 a. The side surface of the long joint 60a is provided with a handle threaded hole 601 for positioning the handle 3, the end surface of the long joint 60a is provided with a fixing threaded hole 602 communicated with the handle threaded hole 601, a fixing screw 8 pressed with the handle 3 is arranged in the fixing threaded hole 602, the handle 3 is screwed in from the handle threaded hole 601 on the side surface of the long joint 60a, and then the handle 3 and the core rod 6 are fastened from the end surface of the long joint 60a through the fixing screw 8, so that the reliable connection of the handle 3 is ensured.
A copper pipe winding method of an evaporator and a condenser for a compressor test comprises the following steps:
a. the arc-shaped bulge in the middle of the fixing clamp 4 acts on the starting end of the copper pipe, two ends of the fixing clamp 4 are respectively fastened with the core rod 6 through wood screws 2, and the starting end of the copper pipe is fixed in the spiral groove 6a of the core rod 6 through the fixing clamp 4;
b. the core rod 6 is rotated, so that the copper pipe is rotated and bent according to the guide of the spiral groove 6a, when the copper pipe rotates to the position of the upper cover plate 5 along with the core rod 6, the pressure of the upper cover plate 5 acts on the copper pipe, and the copper pipe is pressed into the spiral groove 6a for forming;
c. after the copper pipe is formed, the core rod 6 is detached from the support 1, the core rod 6 is separated from the support 1, the formed copper pipe rotates along the spiral groove 6a, and the copper pipe is taken out and can be used for the next test.
Example 2
In the actual use process, the movable positioning part 12 can be opened or closed relative to the baffle body 11, when the core rod 6 needs to be replaced, the positioning of the core rod 6 and the limit pin 14 is released when the rotatable positioning plate 13 is rotated, so that the movable positioning part 12 is opened, the original core rod 6 is conveniently detached from the bracket 1, then a new core rod 6 is arranged between the movable positioning part 12 and the baffle body 11, after the movable positioning part 12 is closed, the rotating positioning plate 13 is matched with the limit pin 14 for positioning, the movable positioning part 12 and the baffle body 11 position two ends of the core rod 6, and meanwhile, the core rod 6 can rotate around the axis of the movable positioning part 12 and the baffle body 11. Therefore, the core rod 6 can be quickly detached and replaced, and the working effect is improved.
Claims (10)
1. The utility model provides a copper pipe coiling anchor clamps of evaporimeter and condenser for compressor is experimental, characterized by, includes support (1) and plug (6), plug (6) rotate around self axis and connect the setting on support (1), be equipped with on the outer wall of plug (6) with spiral groove (6 a) of coaxial arrangement of plug (6), the one end of spiral groove (6 a) is equipped with fixation clamp (4) of fixed copper pipe initiating terminal, support (1) is equipped with upper cover plate (5) that act on copper pipe and spiral groove (6 a) and compress tightly in the top of plug (6).
2. The copper pipe winding clamp for the evaporator and the condenser for the compressor test as claimed in claim 1, wherein the spiral grooves (6 a) are arranged at equal intervals along the outer wall of the core rod (6), and the bottoms of the spiral grooves (6 a) are arc-shaped.
3. The copper pipe winding clamp for the evaporator and the condenser for the compressor test as claimed in claim 1, wherein the two ends of the core rod (6) are respectively provided with a cylindrical joint (60), and a bearing (7) is arranged between the joint (60) and the bracket (1).
4. The copper pipe winding clamp for the evaporator and the condenser for the compressor test as claimed in claim 3, wherein the joint (60) comprises a long joint (60 a) at one end of the core rod (6) and a short joint (60 b) at the other end of the core rod (6), and the handle (3) is fixed on the long joint (60 a).
5. The copper pipe winding clamp for the evaporator and the condenser for the compressor test as claimed in claim 4, wherein a handle threaded hole (601) for positioning the handle (3) is formed in the side surface of the long joint (60 a), a fixing threaded hole (602) communicated with the handle threaded hole (601) is formed in the end surface of the long joint (60 a), and a fixing screw (8) pressed with the handle (3) is arranged in the fixing threaded hole (602).
6. The copper pipe winding clamp for the evaporator and the condenser for the compressor test as claimed in claim 1, wherein the middle of the fixing clamp (4) is provided with an arc-shaped bulge, the core rod (6) is provided with mounting holes at two sides of the spiral groove (6 a), and two ends of the fixing clamp (4) are connected with the mounting holes through wood screws (2).
7. The copper pipe winding clamp for the evaporator and the condenser for the compressor test as claimed in claim 1, wherein the bracket (1) comprises a lower bottom plate (1 b) and a baffle plate (1 a) vertically fixed to two ends of the lower bottom plate (1 b), a positioning hole (101) for positioning a core rod (6) is formed in the upper end of the baffle plate (1 a), and two ends of the upper cover plate (5) are fixedly connected to the top of the baffle plate (1 a).
8. The copper pipe winding clamp for the evaporator and the condenser used in the compressor test is characterized in that the baffle (1 a) comprises a baffle body (11) and a movable positioning part (12) which is rotatably opened or closed with the upper end of the baffle body (11), the movable positioning part (12) and the baffle body (11) form the positioning hole (101) when being closed, and the upper cover plate (5) is fixed with the movable positioning part (12).
9. The copper pipe winding clamp for the evaporator and the condenser used in the compressor test as claimed in claim 8, wherein the movable positioning portion (12) is provided with a positioning plate (13) rotating towards the baffle body (11), the baffle body (11) is provided with a limiting pin (14), and the positioning plate (13) is provided with a limiting hole (13 a) matched with the limiting pin (14).
10. A copper pipe winding method of an evaporator and a condenser for a compressor test comprises the following steps:
a. fixing the starting end of the copper pipe in the spiral groove of the core rod through a fixing clamp;
b. rotating the core rod to make the copper pipe rotate and bend according to the guide of the spiral groove, and forming the copper pipe in the spiral groove;
c. and separating the core rod from the support, rotating the formed copper pipe along the spiral groove, and taking out the copper pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910823120.4A CN110814127A (en) | 2019-09-02 | 2019-09-02 | Copper pipe winding clamp and method for evaporator and condenser for compressor test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910823120.4A CN110814127A (en) | 2019-09-02 | 2019-09-02 | Copper pipe winding clamp and method for evaporator and condenser for compressor test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110814127A true CN110814127A (en) | 2020-02-21 |
Family
ID=69547902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910823120.4A Pending CN110814127A (en) | 2019-09-02 | 2019-09-02 | Copper pipe winding clamp and method for evaporator and condenser for compressor test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110814127A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117704631A (en) * | 2024-01-19 | 2024-03-15 | 联通(浙江)产业互联网有限公司 | Heat exchange energy storage device and heat pump air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4984360A (en) * | 1989-02-22 | 1991-01-15 | Scotsman Group, Inc. | Method of fabricating flaker evaporators by simultaneously deforming while coiling tube |
| CN101011714A (en) * | 2007-02-12 | 2007-08-08 | 合肥美菱太阳能科技有限责任公司 | Automatic copper pipe disc circular knitting machine |
| CN201862674U (en) * | 2010-10-28 | 2011-06-15 | 瓮福（集团）有限责任公司 | Spiral coil winding device |
| CN102350469A (en) * | 2011-08-28 | 2012-02-15 | 贵州航天新力铸锻有限责任公司 | Winding method of spiral cooling pipe |
| CN202490861U (en) * | 2012-02-27 | 2012-10-17 | 江苏勇龙电气有限公司 | Pipe-feeding mechanism of pipe bender |
| CN103706692A (en) * | 2013-12-14 | 2014-04-09 | 天水星火机床有限责任公司 | Preparation device for damping copper tube of static pressure system |
| CN105382065A (en) * | 2015-12-17 | 2016-03-09 | 金华职业技术学院 | Pipe bending clamp |
| CN205309031U (en) * | 2015-12-17 | 2016-06-15 | 金华职业技术学院 | Return bend lathe |
| CN205763155U (en) * | 2016-04-27 | 2016-12-07 | 中国核工业二三建设有限公司 | Pipe bender |
| CN206286373U (en) * | 2016-12-21 | 2017-06-30 | 郑州科技学院 | A kind of cold chain distribution terminal refrigerating plant capillary pipe forming apparatus |
| CN211100977U (en) * | 2019-09-02 | 2020-07-28 | 加西贝拉压缩机有限公司 | Copper pipe winding clamp of evaporator and condenser for compressor test |
-
2019
- 2019-09-02 CN CN201910823120.4A patent/CN110814127A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4984360A (en) * | 1989-02-22 | 1991-01-15 | Scotsman Group, Inc. | Method of fabricating flaker evaporators by simultaneously deforming while coiling tube |
| CN101011714A (en) * | 2007-02-12 | 2007-08-08 | 合肥美菱太阳能科技有限责任公司 | Automatic copper pipe disc circular knitting machine |
| CN201862674U (en) * | 2010-10-28 | 2011-06-15 | 瓮福（集团）有限责任公司 | Spiral coil winding device |
| CN102350469A (en) * | 2011-08-28 | 2012-02-15 | 贵州航天新力铸锻有限责任公司 | Winding method of spiral cooling pipe |
| CN202490861U (en) * | 2012-02-27 | 2012-10-17 | 江苏勇龙电气有限公司 | Pipe-feeding mechanism of pipe bender |
| CN103706692A (en) * | 2013-12-14 | 2014-04-09 | 天水星火机床有限责任公司 | Preparation device for damping copper tube of static pressure system |
| CN105382065A (en) * | 2015-12-17 | 2016-03-09 | 金华职业技术学院 | Pipe bending clamp |
| CN205309031U (en) * | 2015-12-17 | 2016-06-15 | 金华职业技术学院 | Return bend lathe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117704631A (en) * | 2024-01-19 | 2024-03-15 | 联通(浙江)产业互联网有限公司 | Heat exchange energy storage device and heat pump air conditioner |
| CN117704631B (en) * | 2024-01-19 | 2024-07-23 | 联通(浙江)产业互联网有限公司 | Heat exchange energy storage device and heat pump air conditioner |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |
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| RJ01 | Rejection of invention patent application after publication |