CN113405380B - Parallel flow heat exchanger with double rows of flat tubes - Google Patents
Parallel flow heat exchanger with double rows of flat tubes Download PDFInfo
- Publication number
- CN113405380B CN113405380B CN202110703094.9A CN202110703094A CN113405380B CN 113405380 B CN113405380 B CN 113405380B CN 202110703094 A CN202110703094 A CN 202110703094A CN 113405380 B CN113405380 B CN 113405380B
- Authority
- CN
- China
- Prior art keywords
- pipe
- flat
- heat exchanger
- welding
- arc
- 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.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
Abstract
The invention discloses a parallel flow heat exchanger with double rows of flat tubes, which comprises a liquid collecting tube, wherein a strip-shaped through hole is formed in one side surface of the liquid collecting tube, a flat tube is fixedly welded on the surface of the strip-shaped through hole, the surfaces of two ends of the flat tube are fixedly welded on one side surface of the liquid collecting tube, a fin is fixedly welded on the surface of the flat tube, a partition plate is fixedly welded on the surface of the other side of the liquid collecting tube, an intermediate connecting rod is fixedly welded on the surfaces of two sides of the partition plate, the liquid collecting tube comprises a right-angle half tube and an arc-shaped half tube, the surfaces of two ends of the right-angle half tube are fixedly welded on the side surface of the arc-shaped half tube, and strip-shaped welding seams are formed on the surfaces of two sides of the right-angle half tube and the arc-shaped half tube.
Description
Technical Field
The invention relates to the field of heat exchangers, in particular to a parallel flow heat exchanger with double rows of flat tubes.
Background
In the current social life and industrial production, the heat exchanger is very commonly used, and the adopted structural form and the heat exchange mode are different according to different industries and use requirements, wherein the parallel flow heat exchanger is a common one.
But among the parallel flow heat exchanger structure of current, it is direct to dock the flat pipe through the pipe more and welds, then connects the fin of wave line, will cause flat pipe and pipe surface bonding area less like this, causes the welding degree of difficulty great, and easy desoldering separation, stability is not enough to inside baffle structure also does not benefit to accurate positioning, and easy dislocation is interfered, and fin structure joint gap is great, and the heat transfer effect is poor, and product quality is low, is unfavorable for manufacturing production, remains to improve.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a parallel flow heat exchanger with double rows of flat tubes, the liquid collecting tubes with split structures are adopted, the liquid collecting tubes can be combined and welded after split processing, the partition plates can be accurately positioned, the stability is ensured, the manufacturing interference is avoided, the welding position can be ensured to be a planar structure, the stability of flat tube combination is improved, finally, the split fin structures can be aligned to the flat tubes from two sides through punch forming, the resistance is reduced, gaps are further avoided from being generated at the combination position, the stable welding is facilitated, the convenience and the quality of manufacturing can be greatly improved, and the effect and the safety of production and use are ensured.
In order to solve the above problems, the present invention adopts the following technical solutions.
The parallel flow heat exchanger with the double rows of the flat tubes comprises a liquid collecting tube, wherein a strip-shaped through hole is formed in the surface of one side of the liquid collecting tube, a flat tube is fixedly welded to the surface of the strip-shaped through hole, the surfaces of the two ends of the flat tube are fixedly welded to the surface of one side of the liquid collecting tube, a fin is fixedly welded to the surface of the flat tube, a partition plate is fixedly welded to the surface of the other side of the liquid collecting tube, intermediate connecting rods are fixedly welded to the surfaces of the two sides of the partition plate, the liquid collecting tube comprises a right-angle half tube and an arc-shaped half tube, the surfaces of the two ends of the right-angle half tube are fixedly welded to the side surface of the arc-shaped half tube, and strip-shaped welding seams are formed on the surfaces of the two sides of the right-angle half tube and the arc-shaped half tube;
the manufacturing method of the heat exchanger comprises the following steps:
s1, selecting a stainless steel sheet as a basic raw material, and cutting the stainless steel sheet according to a design specification to form a batten raw material;
s2, placing the batten raw materials into a punching machine, and respectively punching and forming by adopting dies to form a right-angle half pipe and an arc-shaped half pipe;
s3, placing the batten raw material into a punching machine, and punching and forming the partition plate;
s4, cutting the plane of the right-angle half pipe to form a long through hole, welding a partition plate on the other side to form a partition structure, and welding middle connecting rods on the two side faces to form a framework supporting structure;
s5, attaching the arc-shaped half pipe to one end of the partition plate, ensuring that the side surfaces of the two ends are matched with the two ends of the right-angle half pipe, and clamping and positioning;
s6, welding the fit positions of the right-angle half pipe and the arc-shaped half pipe to form a long-strip welding line, and finishing the manufacture of the liquid collecting pipe;
s7, aligning one end of the flat tube to the plane of the liquid collecting tube, aligning the flat tube to the through hole of the long body, welding, and positioning two ends;
s8, clamping the fins to the positions of the two sides of the flat tube from the surfaces of the two sides, fitting the surfaces of all the flat tubes, and clamping and positioning;
and S9, brazing and fixing the combination positions of the fins, then sequentially positioning all the fins, cleaning and detecting the welding positions, and finishing the manufacture of the heat exchanger after the welding positions are qualified.
Further, the one end surface of baffle is equipped with the right angle limit, the surface on right angle limit passes through welding strip fixed welding in the side of right angle half pipe, sets up the right angle limit through the baffle, can agree with the right angle half pipe, guarantees welding position's stability.
Further, the other end surface of baffle is equipped with the arc limit, the surface top on arc limit tightly connects in the inboard surface of arc semi-pipe, through arc limit top tight arc semi-pipe, guarantees the degree of agreeing with of composition surface, improves product quality.
Furthermore, the fin be the components of a whole that can function independently structure, and respectively fixed weld in the both sides surface of flat pipe, through adopting split type fin structure, can follow both sides counterpoint welding, avoid interfering, convenient high-efficient.
Furthermore, one end of each fin is provided with a split gap, the split gaps are located in the middle of the surface of each flat tube, and the fins on two sides are prevented from interfering with each other by the split gaps, so that welding positioning is facilitated.
Further, the side punching press of fin is formed with rectangular opening, rectangular open-ended side fixed connection sets up rectangular opening through the fin in the surface of flat pipe, can counterpoint the welding behind the stamping forming, and is convenient stable.
Further, rectangular open-ended both sides surface all is equipped with the brazing layer, the fixed surface on brazing layer welds in the both sides surface of flat pipe, connects rectangular opening through the brazing layer, can guarantee welded stability, reduces the gap and guarantees the heat transfer effect.
Further, the manufacturing method of the fin comprises the following steps:
p1, selecting a stainless steel sheet as a raw material, and cutting the stainless steel sheet by using a plate shearing machine to form a fin blank;
p2, placing the fin blank into a punching machine die, and punching and cutting to form a long-strip opening;
p3, polishing the punching and cutting position, and taking out burrs;
and P4, chamfering the corner position of the fin blank to form a fillet, thus finishing the manufacturing of the fin.
Further, the fins are symmetrically connected to the surfaces of the flat tubes at equal intervals, and the interval size is not smaller than the thickness of the fins.
Compared with the prior art, the invention has the advantages that:
this scheme is through the liquid collecting pipe that adopts the components of a whole that can function independently structure, can divide the body to process the back and carry out the combination welding, does benefit to accurate positioning baffle, guarantees stability, avoids making to interfere to can guarantee that the welding position is planar structure, improve the stability that the flat tube combines, through the fin structure of stamping forming components of a whole that can function independently at last, can counterpoint to the flat tube from both sides respectively, reduce the resistance, and then avoid the joint position to produce the clearance, do benefit to stable welding.
(2) Set up the right angle limit through the baffle, can agree with the right angle half pipe, guarantee welding position's stability.
(3) The arc-shaped half pipe is tightly propped through the arc-shaped edge, so that the integrating degree of the joint surface is ensured, and the product quality is improved.
(4) Through adopting split type fin structure, can follow both sides counterpoint welding, avoid interfering, convenient high-efficient.
(5) Through setting up the components of a whole that can function independently clearance, avoid the fin mutual interference of both sides, do benefit to welding position.
(6) Set up rectangular opening through the fin, can counterpoint the welding after the stamping forming, convenient stability.
(7) Connecting rectangular opening through the brazing layer can guarantee welded stability, reduces the gap and guarantees the heat transfer effect.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a separator weld of the present invention;
FIG. 3 is a schematic side view of the separator of the present invention;
FIG. 4 is a side schematic view of a fin weld of the present invention;
fig. 5 is a schematic view of a split structure of the fin of the present invention.
The reference numbers in the figures illustrate:
1 liquid collecting pipe, 11 long through holes, 12 flat pipes, 13 fins, 14 partition plates, 15 middle connecting rods, 16 right-angle half pipes, 17 arc half pipes, 18 long welding lines, 2 right-angle sides, 21 arc sides, 22 split gaps, 23 long openings, 24 brazing layers and 25 welding strips.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Referring to fig. 1-5, a parallel flow heat exchanger with double rows of flat tubes comprises a liquid collecting tube 1, and referring to fig. 1 and fig. 2, a long through hole 11 is formed in one side surface of the liquid collecting tube 1, a flat tube 12 is fixedly welded to the surface of the long through hole 11, two end surfaces of the flat tube 12 are fixedly welded to one side surface of the liquid collecting tube 1, a fin 13 is fixedly welded to the surface of the flat tube 12, a partition plate 14 is fixedly welded to the other side surface of the liquid collecting tube 1, intermediate connecting rods 15 are fixedly welded to the two side surfaces of the partition plate 14, the liquid collecting tube 1 comprises a right-angle half tube 16 and an arc-shaped half tube 17, two end surfaces of the right-angle half tube 16 are fixedly welded to the side surface of the arc-shaped half tube 17, and long welding seams 18 are formed on the two side surfaces of the right-angle half tube 16 and the arc-shaped half tube 17;
the manufacturing method of the heat exchanger comprises the following steps:
s1, selecting a stainless steel sheet as a basic raw material, and cutting the stainless steel sheet according to design specifications to form a batten raw material;
s2, placing the batten raw materials into a punching machine, and respectively punching and forming by adopting dies to form a right-angle half pipe and an arc-shaped half pipe;
s3, placing the batten raw material into a punching machine, and punching and forming the partition plate;
s4, cutting the plane of the right-angle half pipe to form a long through hole, welding a partition plate on the other side to form a partition structure, and welding middle connecting rods on the two side faces to form a framework supporting structure;
s5, attaching the arc-shaped half pipe to one end of the partition plate, ensuring that the side surfaces of the two ends are matched with the two ends of the right-angle half pipe, and clamping and positioning;
s6, welding the fit positions of the right-angle half pipe and the arc-shaped half pipe to form a long-strip welding line, and finishing the manufacture of the liquid collecting pipe;
s7, aligning one end of the flat tube to the plane of the liquid collecting tube, aligning the flat tube to the through hole of the long body, welding, and positioning two ends;
s8, clamping the fins to the positions of the two sides of the flat tube from the surfaces of the two sides, fitting the surfaces of all the flat tubes, and clamping and positioning;
s9, brazing and fixing the fin combination positions, then sequentially positioning all the fins, cleaning and detecting the welding positions, and finishing the manufacture of the heat exchanger after the welding positions are qualified.
Please refer to fig. 2 and 3, one end surface of the partition plate 14 is provided with a right-angle side 2, the surface of the right-angle side 2 is fixedly welded on the side surface of the right-angle half pipe 16 through a welding strip 25, the right-angle side 2 is arranged through the partition plate 14, the right-angle half pipe 16 can be conformed, the stability of the welding position is ensured, the other end surface of the partition plate 14 is provided with an arc-shaped side 21, the surface top of the arc-shaped side 21 is tightly connected to the inner side surface of the arc-shaped half pipe 17, the arc-shaped side 21 tightly pushes the arc-shaped half pipe 17, the conformity degree of the joint surface is ensured, and the product quality is improved.
Referring to fig. 4 and 5, the fins 13 are of a split structure and are respectively fixedly welded on the surfaces of the two sides of the flat tube 12, by adopting the split fin structure, the alignment welding can be performed from the two sides, the interference is avoided, the operation is convenient and efficient, one end of each fin 13 is provided with a split gap 22, the split gap 22 is located in the middle position of the surface of the flat tube 12, by setting the split gap, the mutual interference of the fins on the two sides is avoided, the welding positioning is facilitated, a strip opening 23 is formed in the side surface of each fin 13 in a stamping manner, the side surface of the strip opening 23 is fixedly connected to the surface of the flat tube 12, the strip opening 23 is arranged through the fins 13, the alignment welding can be performed after the stamping forming, the operation is convenient and stable, the brazing layers 24 are arranged on the surfaces of the two sides of the strip opening 23, the surfaces of the brazing layers 24 are fixedly welded on the surfaces of the two sides of the flat tube 12, the strip opening 23 is connected through the brazing layers 24, the welding stability can be ensured, and the heat exchange effect can be reduced.
The manufacturing method of the fin 13 includes the steps of:
p1, selecting a stainless steel sheet as a raw material, and cutting the stainless steel sheet by using a plate shearing machine to form a fin blank;
p2, placing the fin blank into a punching machine die, and punching and cutting to form a long-strip opening;
p3, polishing the punching and cutting position, and taking out burrs;
and P4, chamfering the corner position of the fin blank to form a fillet, thus finishing the manufacturing of the fin.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (9)
1. The utility model provides a parallel flow heat exchanger of double flat pipe, includes collector tube (1), its characterized in that: the liquid collecting pipe comprises a liquid collecting pipe (1), and is characterized in that a long-strip through hole (11) is formed in the surface of one side of the liquid collecting pipe (1), a flat pipe (12) is fixedly welded on the surface of the long-strip through hole (11), the surfaces of two ends of the flat pipe (12) are fixedly welded on the surface of one side of the liquid collecting pipe (1), fins (13) are fixedly welded on the surface of the flat pipe (12), a partition plate (14) is fixedly welded on the surface of the other side of the liquid collecting pipe (1), an intermediate connecting rod (15) is fixedly welded on the surfaces of two sides of the partition plate (14), the liquid collecting pipe (1) comprises a right-angle half pipe (16) and an arc-shaped half pipe (17), the surfaces of two ends of the right-angle half pipe (16) are fixedly welded on the side surface of the arc-shaped half pipe (17), and long-strip welding seams (18) are formed on the surfaces of two sides of the right-angle half pipe (16) and the arc-shaped half pipe (17);
the manufacturing method of the heat exchanger comprises the following steps:
s1, selecting a stainless steel sheet as a basic raw material, and cutting the stainless steel sheet according to a design specification to form a batten raw material;
s2, placing the batten raw materials into a punching machine, and respectively punching and forming by adopting a die to form a right-angle half pipe and an arc-shaped half pipe;
s3, placing the batten raw material into a punching machine, and punching and forming the partition plate;
s4, cutting the plane of the right-angle half pipe to form a long through hole, welding a partition plate on the other side to form a partition structure, and welding middle connecting rods on two side surfaces to form a framework supporting structure;
s5, attaching the arc-shaped half pipe to one end of the partition plate, ensuring that the side surfaces of the two ends are matched with the two ends of the right-angle half pipe, and clamping and positioning;
s6, welding the fit positions of the right-angle half pipe and the arc-shaped half pipe to form a long-strip welding line, and finishing the manufacture of the liquid collecting pipe;
s7, aligning one end of the flat tube to the plane of the liquid collecting tube, aligning the flat tube to the long through hole, welding, and positioning two ends of the flat tube;
s8, clamping the fins to the positions of the two sides of the flat tube from the surfaces of the two sides, fitting the surfaces of all the flat tubes, and clamping and positioning;
s9, brazing and fixing the fin combination positions, then sequentially positioning all the fins, cleaning and detecting the welding positions, and finishing the manufacture of the heat exchanger after the welding positions are qualified.
2. The parallel flow heat exchanger with double rows of flat tubes as claimed in claim 1, wherein: the surface of one end of baffle (14) is equipped with right-angle side (2), the surface of right-angle side (2) is through welding strip (25) fixed welding in the side of right angle half-pipe (16).
3. The parallel flow heat exchanger with double rows of flat tubes as claimed in claim 1, wherein: the surface of the other end of the clapboard (14) is provided with an arc edge (21), and the surface of the arc edge (21) is tightly connected with the inner side surface of the arc half pipe (17).
4. The parallel flow heat exchanger with double rows of flat tubes as claimed in claim 1, wherein: the fins (13) are of a split structure and are fixedly welded on the surfaces of the two sides of the flat tubes (12) respectively.
5. The parallel flow heat exchanger with double rows of flat tubes according to claim 1, wherein: one end of the fin (13) is provided with a split gap (22), and the split gap (22) is positioned in the middle of the surface of the flat tube (12).
6. The parallel flow heat exchanger with double rows of flat tubes according to claim 1, wherein: the side surfaces of the fins (13) are punched to form strip openings (23), and the side surfaces of the strip openings (23) are fixedly connected to the surfaces of the flat tubes (12).
7. The parallel flow heat exchanger with double rows of flat tubes as claimed in claim 6, wherein: brazing layers (24) are arranged on the surfaces of the two sides of the long strip opening (23), and the surfaces of the brazing layers (24) are fixedly welded to the surfaces of the two sides of the flat tube (12).
8. The parallel flow heat exchanger with double rows of flat tubes according to claim 1, wherein: the manufacturing method of the fin (13) comprises the following steps:
p1, selecting a stainless steel sheet as a raw material, and cutting the stainless steel sheet by using a plate shearing machine to form a fin blank;
p2, placing the fin blank into a punching machine die, and punching and cutting to form a long strip opening;
p3, polishing the punching and cutting position, and taking out burrs;
and P4, chamfering the corner position of the fin blank to form a fillet, thus finishing the manufacturing of the fin.
9. The parallel flow heat exchanger with double rows of flat tubes as claimed in claim 1, wherein: the fins (13) are symmetrically connected to the surface of the flat tube (12) at equal intervals, and the interval size is not smaller than the thickness of the fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110703094.9A CN113405380B (en) | 2021-06-24 | 2021-06-24 | Parallel flow heat exchanger with double rows of flat tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110703094.9A CN113405380B (en) | 2021-06-24 | 2021-06-24 | Parallel flow heat exchanger with double rows of flat tubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113405380A CN113405380A (en) | 2021-09-17 |
| CN113405380B true CN113405380B (en) | 2022-11-15 |
Family
ID=77683009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110703094.9A Active CN113405380B (en) | 2021-06-24 | 2021-06-24 | Parallel flow heat exchanger with double rows of flat tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113405380B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117102827A (en) * | 2023-10-23 | 2023-11-24 | 烟台恒邦泵业有限公司 | Liquid collecting pipe processing technology |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO128785B (en) * | 1971-12-15 | 1974-01-07 | Bartz S Ind As | |
| CN107255419A (en) * | 2017-06-26 | 2017-10-17 | 大连葆光节能空调设备厂 | A kind of semi-canal type sewage heat exchanger |
| CN211695988U (en) * | 2019-12-11 | 2020-10-16 | 常州爱迪尔制冷科技有限公司 | Parallel flow finned heat exchanger |
| CN111946903B (en) * | 2020-08-06 | 2021-11-02 | 合肥陶陶新材料科技有限公司 | Two half pipes and processing method thereof |
-
2021
- 2021-06-24 CN CN202110703094.9A patent/CN113405380B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113405380A (en) | 2021-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2508831A1 (en) | Plate heat exchanger | |
| CN113405380B (en) | Parallel flow heat exchanger with double rows of flat tubes | |
| CN108088300B (en) | Bulk fluid dispenser and method of making same | |
| CN201906956U (en) | Positioning tool for welding and assembling plate piece of all-welded plate type heat exchanger | |
| CN104654877A (en) | Condenser flat pipe and condenser | |
| CN217363619U (en) | Heat pipe connecting structure | |
| CN205352150U (en) | Heat exchanger core of brazing | |
| CN213748025U (en) | Copper brazing sheet type heat exchanger heat recovery structure | |
| CN105020914A (en) | Honeycomb type flat-plate solar collector plate core and machining method thereof | |
| CN214747413U (en) | Split type interface brazing plate heat exchanger | |
| CN215598163U (en) | Novel reinforcing plate-fin type tractor radiator core | |
| CN206378018U (en) | Heat exchange tube assemblies and cooler | |
| CN217737982U (en) | Brazed plate heat exchanger convenient to connect | |
| CN215983349U (en) | Condenser fin optimization structure | |
| CN215845076U (en) | Processing cutter row of refrigeration plant deck plate | |
| CN215598178U (en) | Joint structure suitable for plate heat exchanger | |
| CN215984126U (en) | Tooth-shaped plate and insert block structure for welding plate type heat exchanger | |
| CN213841853U (en) | Processing element of welded plate heat exchanger | |
| CN216115512U (en) | Micro-channel structure for improving brazing deformation | |
| CN216668385U (en) | Plate type heat exchanger | |
| CN213455066U (en) | Aluminum plate-fin heat exchanger | |
| CN211011998U (en) | Large-sized plate evaporator replacing structure | |
| CN210036397U (en) | Brazing type radiator main sheet | |
| CN213984711U (en) | Plate type heat exchange device and heat exchange structure | |
| CN112815748A (en) | Split type interface brazing plate heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 44, Zone 5, Jinzhuang Village, Zhangxia Street, Changqing District, Jinan City, Shandong Province, 250308 Patentee after: Shandong Shiguang Industrial Equipment Group Co.,Ltd. Address before: 250300 Zhangxia Industrial Park, Changqing District, Jinan City, Shandong Province Patentee before: SHANDONG SHIGUANG INDUSTRIAL EQUIPMENT MANUFACTURING Co.,Ltd. |