CN211345402U - Heat exchange combustion device based on additive manufacturing - Google Patents
Heat exchange combustion device based on additive manufacturing Download PDFInfo
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- CN211345402U CN211345402U CN201922209289.9U CN201922209289U CN211345402U CN 211345402 U CN211345402 U CN 211345402U CN 201922209289 U CN201922209289 U CN 201922209289U CN 211345402 U CN211345402 U CN 211345402U
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Abstract
The utility model relates to a heat transfer combustion technology field discloses a heat transfer burner based on vibration material disk, include: the hollow shell units are sequentially communicated and enclose a combustion cylinder, a fluid gap is formed between every two adjacent hollow shell units, and one end of the combustion cylinder is provided with a fuel inlet; the other end of the combustion barrel body and the combustion barrel body enclose into a combustion cavity, compressed air can enter the combustion cavity through a fluid gap, and combustion gas in the combustion cavity can enter the hollow shell unit from the blocking portion and is discharged by the hollow shell unit located at one end of the combustion barrel body. The utility model discloses a heat transfer burner based on vibration material disk can be through vibration material disk integrated into one piece, simple structure, preparation convenience, during the use, combustion gas can flow in hollow shell unit, and compressed air can get into the burning chamber through the circulation clearance, and heat transfer area increases, and heat exchange efficiency obtains improving by a wide margin.
Description
Technical Field
The utility model relates to a heat transfer combustion technology field especially relates to a heat transfer burner based on vibration material disk makes.
Background
Additive manufacturing techniques enable the production of arbitrarily complex structural components. Advanced turbo machine's heat exchanger and burning part connection structure are complicated, rely on traditional processing mode consuming time hard and processing degree of difficulty big, with high costs, current heat transfer burner still has the problem that heat exchange efficiency is low.
SUMMERY OF THE UTILITY MODEL
Based on above, an object of the utility model is to provide a heat transfer burner based on vibration material disk, simple structure can make direct machine-shaping through vibration material disk, and heat exchange efficiency is high, heat that can make full use of combustion gas.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a heat exchange combustion device based on additive manufacturing, comprising: the number of the hollow shell units is a plurality, the hollow shell units are sequentially communicated and enclose a combustion cylinder, the combustion cylinder comprises at least two combustion cylinder layers which are sequentially overlapped from outside to inside, a fluid gap is formed between every two adjacent hollow shell units, and one end of the combustion cylinder is opened to form a fuel inlet; the stop part, the stop part is located the other end of burning barrel and with the burning barrel encloses into the burning chamber, the stop part with hollow shell unit passes through the vibration material disk and forms into integrated into one piece, and compressed air can pass through fluid gap from outer to inner gets into the burning chamber, combustion gas in the burning chamber can follow the other end of burning barrel passes through the stop part gets into hollow shell unit is by being located the one end of burning barrel hollow shell unit is discharged.
As a preferred scheme of the heat exchange combustion device based on additive manufacturing, each combustion cylinder layer is composed of a plurality of sequentially communicated combustion cylinder rings, and each combustion cylinder ring is composed of a plurality of sequentially communicated hollow shell units.
As a preferable scheme of the heat exchange combustion device based on the additive manufacturing, the number of the hollow shell units forming each combustion cylinder ring is the same, and the size of the hollow shell units is gradually reduced along the direction from the combustion cylinder layer at the outer layer to the combustion cylinder layer at the inner layer.
As a preferable scheme of the heat exchange combustion device based on additive manufacturing, the blocking portion comprises a separating portion and a communicating portion, the communicating portion is located inside the separating portion, a communicating hole is formed in the communicating portion, and combustion gas in the combustion chamber can enter the hollow shell unit through the communicating hole.
As a preferred scheme of the heat exchange combustion device based on additive manufacturing, the combustion cylinder is a cylindrical combustion cylinder, and the hollow shell unit is a spherical shell unit.
As a preferable scheme of the heat exchange combustion device based on additive manufacturing, in a diameter direction of the spherical shell units, a distance between spherical centers of the spherical shell units forming two adjacent combustion cylinder layers is a preset distance, an inner diameter of the spherical shell unit forming one combustion cylinder layer is a first inner diameter, an outer diameter of the spherical shell unit forming the other combustion cylinder layer is a first outer diameter, an inner diameter of the spherical shell unit forming the other combustion cylinder layer is a second inner diameter, an outer diameter of the spherical shell unit forming the one combustion cylinder layer is a second outer diameter, and the preset distance is greater than a half of a sum of the first inner diameter and the second inner diameter and less than a half of a sum of the first outer diameter and the second outer diameter.
As a preferable scheme of the heat exchange combustion device based on additive manufacturing, the distance between the spherical centers of two adjacent spherical shell units forming each combustion cylinder layer is the same along the direction of the central axis of the combustion cylinder.
As a preferable scheme of the heat exchange combustion device based on the additive manufacturing, the outer diameter of the spherical shell unit is between 5mm and 10mm, the thickness of the spherical shell unit is between 0.3mm and 0.6mm, and the wall thickness of the adjacent combustion cylinder layer is between 0.5mm and 1 mm.
As a preferred scheme of the heat exchange combustion device based on additive manufacturing, the combustion cylinder is a polygonal combustion cylinder, and the hollow shell unit is a polygonal hollow unit.
As a preferred scheme of heat exchange burner based on vibration material disk, the burning bobbin layer includes inlayer burning bobbin layer, middle burning bobbin layer and outer burning bobbin layer, the number of middle burning bobbin layer is at least one, inlayer burning bobbin layer, middle burning bobbin layer and outer burning bobbin layer are established in proper order and are formed the burning barrel.
The utility model has the advantages that: the utility model discloses a heat transfer burner based on vibration material disk can make integrated into one piece through vibration material disk, moreover, the steam generator is simple in structure, the preparation is convenient, separately design with current heat exchanger and combustion chamber compares, the total weight reduces, in the time of the in-service use, combustion gas can flow in hollow shell unit and by the hollow shell unit discharge that is located the one end of burning barrel, compressed air can get into the burning chamber through the circulation clearance between the hollow shell unit simultaneously, heat transfer area increases, thereby guaranteed to fully the heat transfer between combustion gas and the compressed air, heat exchange efficiency obtains improving by a wide margin.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic view of a heat exchange combustion apparatus based on additive manufacturing according to an embodiment of the present invention in a first direction;
fig. 2 is a schematic view of a heat exchange combustion apparatus based on additive manufacturing according to an embodiment of the present invention in a second direction;
fig. 3 is a schematic view of a heat exchange combustion apparatus based on additive manufacturing according to a third embodiment of the present invention;
fig. 4 is a cross-sectional view of a heat exchange combustion apparatus based on additive manufacturing according to an embodiment of the present invention;
fig. 5 is a schematic view of fig. 4 in another orientation.
In the figure:
1. a combustion cylinder; 10. a hollow shell unit; 101. a flow-through hole; 11. an inner combustion shell layer; 12. an intermediate combustion barrel layer; 13. an outer combustion barrel layer;
21. a combustion chamber; 22. a fluid gap;
3. a blocking portion; 31. an isolation section; 32. a communicating portion; 321. a communicating hole;
4. and (7) mounting the plate.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, the present embodiment provides a heat exchange combustion apparatus based on additive manufacturing for heat exchange combustion, the apparatus includes a plurality of hollow shell units 10, a blocking portion 3, and a mounting plate 4, the number of the hollow shell units 10 is several, the hollow shell units 10 are sequentially communicated and enclose a combustion cylinder 1, the combustion cylinder 1 includes at least two combustion cylinder layers sequentially stacked from outside to inside, a fluid gap 22 is formed between adjacent hollow shell units 10, one end of the combustion cylinder 1 is open and provided with a fuel inlet for entering fuel, the mounting plate 4 is provided at the open end of the combustion cylinder 1, the mounting plate 4 is used for mounting a nozzle for injecting fuel to inject fuel into the combustion chamber 21, the fuel may be gas or atomized fuel, and may also be other fuels, which is specifically selected according to actual needs. The blocking portion 3 is located the other end of the combustion cylinder 1 and encloses into the combustion chamber 21 with the combustion cylinder 1, the blocking portion 3, the hollow shell unit 10 and the mounting plate 4 form into an integrated piece through additive manufacturing, compressed air can enter the combustion chamber 21 from outside to inside through the fluid gap 22, and combustion gas in the combustion chamber 21 can enter the hollow shell unit 10 from the other end of the combustion cylinder 1 through the blocking portion 3 and is discharged by the hollow shell unit 10 located at one end of the combustion cylinder 1.
The heat transfer burner based on vibration material disk that this embodiment provided can be through vibration material disk integrated into one piece, moreover, the steam generator is simple in structure, the preparation is convenient, separately design with current heat exchanger and combustion chamber compares, the total weight reduces, in the time of the in-service use, combustion gas can flow in hollow shell unit 10 and discharge by the hollow shell unit 10 that is located the one end of combustion barrel 1, compressed air can get into combustion chamber 21 through the circulation clearance between the hollow shell unit 10 simultaneously, heat transfer area increases, thereby guaranteed to fully exchange heat between combustion gas and the compressed air, heat exchange efficiency obtains improving by a wide margin.
The combustion cylinder 1 of the present embodiment is a cylindrical combustion cylinder, and the hollow shell unit 10 is a spherical shell unit. Of course, in other embodiments, the combustion cylinder 1 may also be a polygonal combustion cylinder or an irregularly shaped combustion cylinder 1, and the hollow shell unit 10 constituting the combustion cylinder 1 may be a polygonal hollow unit or an irregularly shaped hollow shell unit 10.
The heat exchange combustion device based on additive manufacturing of this embodiment has fully utilized the good mechanical properties of sphere, thermal expansion performance and the low damping flow characteristic, has increased the local turbulent flow activity of cold and hot fluid, has strengthened the heat transfer effect, has promoted heat exchange efficiency. The integrated design of the recuperator and the combustor also reduces the overall weight compared to a separate design. In addition, the design of the net structure based on the spherical shell structure is adopted, the manufacturability of the spherical body based on additive manufacturing can be fully utilized, the manufacturing difficulty is greatly reduced, and the process feasibility is improved.
Furthermore, each combustion cylinder layer is composed of a plurality of sequentially communicated combustion cylinder rings, and each combustion cylinder ring is composed of a plurality of sequentially communicated hollow shell units 10. The number of the spherical shell units forming each combustion cylinder ring is the same, and the size of the spherical shell units is gradually reduced along the direction from the outer combustion cylinder layer to the inner combustion cylinder layer. The distance between the spherical centers of two adjacent spherical shell units forming each combustion cylinder layer is the same along the central axis direction of the combustion cylinder 1.
As shown in fig. 4 and 5, the baffle 3 of the present embodiment includes a partition 31 and a communicating portion 32, the communicating portion 32 is located inside the partition 31, the communicating portion 32 is provided with a communicating hole 321, and the combustion gas in the combustion chamber 21 can enter the spherical shell unit through the communicating hole 321. In order to ensure the heat exchange between the combustion gas and the compressed air, the heat exchange combustion apparatus of the present embodiment is required to be made of a heat conductive material.
In order to enhance the heat exchange between the combustion gas and the compressed air, the distance between the spherical centers of the spherical shell units forming two adjacent combustion cylinder layers is a preset distance a along the diameter direction of the spherical shell units, as shown in fig. 3, the inner diameter of the spherical shell unit forming one combustion cylinder layer is a first inner diameter, the outer diameter of the spherical shell unit forming the other combustion cylinder layer is a first outer diameter, the inner diameter of the spherical shell unit forming the other combustion cylinder layer is a second inner diameter, the outer diameter of the spherical shell unit forming the other combustion cylinder layer is a second outer diameter, a is greater than half of the sum of the first inner diameter and the second inner diameter and less than half of the sum of the first outer diameter and the second outer diameter, and the size of a is limited and the combustion cylinder.
Specifically, the thinner the thickness of the spherical shell unit is, the more beneficial the heat exchange between the combustion gas and the compressed air is, but in order to ensure the structural strength of the combustion cylinder 1 itself, the thickness of the spherical shell unit cannot be too thin, and in the actual design, the thickness of the spherical shell unit is required to be between 0.3mm and 0.6mm, the outer diameter of the spherical shell unit is required to be between 5mm and 10mm, and the wall thickness of the adjacent combustion cylinder layer is required to be between 0.5mm and 1 mm. Of course, in other embodiments, the outer diameter and the thickness of the spherical shell unit and the wall thickness of the adjacent combustion cylinder layer are not limited to the limitations of this embodiment, and can be selected according to actual needs.
As shown in fig. 3 and 4, the combustion cylinder layer of the present embodiment includes an inner combustion cylinder layer 11, an intermediate combustion cylinder layer 12, and an outer combustion cylinder layer 13, the number of the intermediate combustion cylinder layers 12 is two, the inner combustion cylinder layer 11 and the outer combustion cylinder layer are respectively one, and the inner combustion cylinder layer 11, the intermediate combustion cylinder layer 12, and the outer combustion cylinder layer 13 are sequentially stacked to form the combustion cylinder 1. Of course, in other embodiments of the present invention, the intermediate combustion cylinder layer 12 may not be provided or the number of the intermediate combustion cylinder layers 12 may be one or more than two, which is specifically selected according to actual needs.
Specifically, each combustion cylinder layer of the present embodiment is respectively communicated with the combustion cylinder layers located at both sides thereof to realize radial communication of the combustion cylinder 1, the combustion cylinder rings constituting each combustion cylinder layer are communicated with each other to realize axial communication of the combustion cylinder 1, and the hollow shell units 10 constituting each combustion cylinder ring are communicated with each other to realize circumferential communication of the combustion cylinder 1.
Further, five circulation holes 101 are formed in the spherical shell unit forming the inner combustion cylinder layer 11 of the present embodiment, two of the circulation holes 101 are arranged along the central axis of the combustion cylinder 1 and in the direction of penetrating through the spherical center of the spherical shell unit, one circulation hole 101 is arranged along the radial direction of the combustion cylinder 1 and in the direction of penetrating through the spherical center of the spherical shell unit and away from the combustion chamber 21, that is, the spherical shell unit on the inner combustion cylinder layer 11 is not directly communicated with the combustion chamber 21, and the two circulation holes 101 are arranged along the circumferential direction of the combustion cylinder 1 and in the direction of penetrating through the spherical center of the spherical shell unit and are located on all the spherical shell units in the circumferential direction of the same combustion cylinder ring, and the central axes of the circulation holes 101 are sequentially connected to form a circle concentric with the combustion cylinder ring.
The spherical shell unit forming the outer combustion barrel layer 13 of the embodiment is provided with five circulation holes 101, wherein two circulation holes 101 are arranged along the central axis of the combustion barrel 1 and in the direction of penetrating through the spherical center of the spherical shell unit, one circulation hole 101 is arranged along the radial direction of the combustion barrel 1 and in the direction of penetrating through the spherical center of the spherical shell unit and close to the combustion chamber 21, and the two circulation holes 101 are arranged along the circumferential direction of the combustion barrel 1 and in the direction of penetrating through the spherical center of the spherical shell unit and are positioned on the central axes of the circulation holes 101 on all the spherical shell units in the circumferential direction of the same combustion barrel ring and are sequentially connected to form a circle concentric with the combustion barrel ring.
Six circulation holes 101 are formed in the spherical shell unit forming the middle combustion barrel layer 12 of the embodiment, wherein two circulation holes 101 are arranged along the central axis of the combustion barrel 1 and in the direction of penetrating through the spherical center of the spherical shell unit, two circulation holes 101 are arranged along the radial direction of the combustion barrel 1 and in the direction of penetrating through the spherical center of the spherical shell unit, and the central axes of the circulation holes 101 arranged along the circumferential direction of the combustion barrel 1 and in the direction of penetrating through the spherical center of the spherical shell unit and on all the spherical shell units in the circumferential direction of the same combustion barrel ring are sequentially connected to form a circle concentric with the combustion barrel ring.
As shown in fig. 5, in the figure, straight arrows formed by solid lines represent the flow direction of the compressed air, straight arrows formed by broken lines represent the flow direction of the fuel, and curved arrows formed by broken lines represent the flow direction of the combustion gas generated after the reaction of the fuel and the compressed air. In practical use, compressed air can flow through the outer combustion barrel layer 13, the middle combustion barrel layer 12 and the inner combustion barrel layer 11 in sequence through the circulation gaps among the hollow shell units 10 to enter the combustion chamber 21, fuel enters the combustion chamber 21 through one end of the combustion barrel 1, the fuel is combusted in the combustion chamber 21 to generate combustion gas, and the generated combustion gas enters the hollow shell units 10 from the combustion chamber 21 through the communication holes 321 and is finally discharged from the hollow shell units 10 at the other end of the combustion barrel 1.
When the combustion cylinder 1 is manufactured by additive manufacturing, partial powder can be remained in the spherical shell unit, the residual powder can be discharged through the circulation hole 101 of the spherical shell unit, and the phenomenon that partial spherical shell unit is blocked and the heat exchange effect is influenced due to the fact that the powder is accumulated in the spherical shell unit is prevented.
When the heat exchange combustion device is manufactured and processed by adopting additive manufacturing, the method comprises the following specific steps:
determining the space shapes of the combustion cylinder 1, the blocking part 3 and the mounting plate 4 according to the size requirement of the radial structure of the combustion engine;
according to the requirement of combustion, the sizes of the combustion cylinder 1, the blocking part 3 and the mounting plate 4 are determined, and the distribution condition of the circulation holes 101 on the hollow shell unit 10 is determined;
modeling of the combustion cylinder 1, the blocking part 3 and the mounting plate 4 is completed;
parameters such as size, thickness, arrangement and the like of the hollow shell unit 10 are optimized according to the requirements of heat exchange efficiency, strength and manufacturing process;
finishing the interface design of the heat exchange combustion device, and guiding the established model into additive manufacturing equipment to finish additive manufacturing and post-treatment;
and finishing the assembly and performance test of the heat exchange combustion device.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A heat exchange combustion device based on additive manufacturing, comprising:
the number of the hollow shell units (10) is a plurality, the hollow shell units (10) are sequentially communicated and enclose a combustion cylinder body (1), the combustion cylinder body (1) comprises at least two combustion cylinder layers which are sequentially overlapped from outside to inside, a fluid gap (22) is formed between every two adjacent hollow shell units (10), and one end of the combustion cylinder body (1) is provided with a fuel inlet;
blocking part (3), blocking part (3) are located the other end of burning barrel (1) and with burning barrel (1) encloses into combustion chamber (21), blocking part (3) with hollow shell unit (10) form into integrated piece through vibration material disk, and compressed air can pass through fluid gap (22) is from outer to interior entering combustion chamber (21), combustion gas in combustion chamber (21) can be followed burning barrel (1) other end blocking part (3) get into hollow shell unit (10) and by being located the one end of burning barrel (1) hollow shell unit (10) are discharged.
2. The additive manufacturing-based heat exchange combustion device according to claim 1, wherein each combustion can layer is composed of a plurality of sequentially communicated combustion can rings, and each combustion can ring is composed of a plurality of sequentially communicated hollow shell units (10).
3. The additive manufacturing-based heat exchange combustion device according to claim 2, wherein the number of the hollow shell units (10) constituting each of the combustion can rings is the same, and the size of the hollow shell units (10) is gradually reduced in a direction from the combustion can layer of the outer layer to the combustion can layer of the inner layer.
4. The additive manufacturing-based heat exchange combustion device according to claim 1, wherein the barrier (3) comprises a partition (31) and a communication part (32), the communication part (32) is located inside the partition (31), a communication hole (321) is arranged on the communication part (32), and combustion gas in the combustion chamber (21) can enter the hollow shell unit (10) through the communication hole (321).
5. The additive manufacturing based heat exchange combustion device according to claim 1, characterized in that the combustion cylinder (1) is a cylindrical combustion cylinder and the hollow shell unit (10) is a spherical shell unit.
6. The additive manufacturing-based heat exchange combustion device according to claim 5, wherein in a diameter direction of the spherical shell units, a distance between spherical centers of the spherical shell units constituting two adjacent combustion cylinder layers is a preset distance, an inner diameter of the spherical shell unit constituting one combustion cylinder layer is a first inner diameter, an outer diameter of the spherical shell unit constituting the other combustion cylinder layer is a first outer diameter, an inner diameter of the spherical shell unit constituting the other combustion cylinder layer is a second inner diameter, and an outer diameter of the spherical shell unit constituting the one combustion cylinder layer is a second outer diameter, and the preset distance is greater than a half of a sum of the first inner diameter and the second inner diameter and less than a half of a sum of the first outer diameter and the second outer diameter.
7. The additive manufacturing-based heat exchange combustion device according to claim 5, characterized in that the distance between the spherical centers of two adjacent spherical shell units constituting each combustion cylinder layer is the same along the central axis direction of the combustion cylinder (1).
8. The additive manufacturing-based heat exchange combustion device according to claim 5, wherein the outer diameter of the spherical shell unit is between 5mm and 10mm, the thickness of the spherical shell unit is between 0.3mm and 0.6mm, and the wall thickness of the adjacent combustion cylinder layer is between 0.5mm and 1 mm.
9. The additive manufacturing based heat exchange combustion device according to any one of claims 1 to 8, wherein the combustion cylinder (1) is a polygonal combustion cylinder and the hollow shell unit (10) is a polygonal hollow unit.
10. The additive manufacturing-based heat exchange combustion device according to any one of claims 1 to 8, wherein the combustion cylinder layers comprise an inner combustion cylinder layer (11), an intermediate combustion cylinder layer (12) and an outer combustion cylinder layer (13), the number of the intermediate combustion cylinder layers (12) is at least one, and the inner combustion cylinder layer (11), the intermediate combustion cylinder layer (12) and the outer combustion cylinder layer (13) are sequentially stacked to form the combustion cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922209289.9U CN211345402U (en) | 2019-12-11 | 2019-12-11 | Heat exchange combustion device based on additive manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922209289.9U CN211345402U (en) | 2019-12-11 | 2019-12-11 | Heat exchange combustion device based on additive manufacturing |
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| Publication Number | Publication Date |
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| CN211345402U true CN211345402U (en) | 2020-08-25 |
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| CN201922209289.9U Active CN211345402U (en) | 2019-12-11 | 2019-12-11 | Heat exchange combustion device based on additive manufacturing |
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| CN (1) | CN211345402U (en) |
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Effective date of registration: 20220622 Address after: 314000 No. 1282-185, Dongfang North Road, Youchegang Town, Xiuzhou District, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Yidong Energy Co.,Ltd. Address before: Room 303, building 5, Huiyuan, South University of science and technology, 1088 Xueyuan Avenue, Taoyuan Street, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN YIDONG AVIATION TECHNOLOGY Co.,Ltd. |