CN206160567U - Condenser - Google Patents
Condenser Download PDFInfo
- Publication number
- CN206160567U CN206160567U CN201621082141.3U CN201621082141U CN206160567U CN 206160567 U CN206160567 U CN 206160567U CN 201621082141 U CN201621082141 U CN 201621082141U CN 206160567 U CN206160567 U CN 206160567U
- Authority
- CN
- China
- Prior art keywords
- refrigeration piping
- refrigeration
- refrigerant
- parallel
- fin
- 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
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility creatively provides a condenser, it includes a refrigeration pipeline subassembly, a refrigeration pipeline subassembly includes the refrigeration pipeline through at least one time bending type one -tenth, buckling of refrigeration pipeline is located to refrigeration pipeline's bending segment, other parts of refrigeration pipeline are the base plate section, and lead to the connection of turn the corner book section between two adjacent base plate section tip, two upper and lower terminal surfaces of base plate section are equipped with multiseriate parallel fin group mutually, and every fin group that is listed as comprises the fin of a plurality of parallels of each other, and adjacent two are listed as alternate establishhing and parallel mutually between the fin of fin group, the outer terminal surface of bending segment is equipped with multiseriate parallel rib wing group mutually, and every rib wing group that is listed as comprises the rib wing of a plurality of parallels of each other, and adjacent two are listed as alternate setting up and parallel mutually between the rib wing of rib wing group. The utility model discloses the creation has increased the air vortex, has increased heat radiating area, has still improved the radiating effect simultaneously, and then has still improved whole heat transfer effect.
Description
Technical field
The invention belongs to condensing plant field, more particularly, to a kind of condenser.
Background technology
In recent years, because air-conditioning is increasingly popularized, and domestic air conditioning condenser adopts fin tube type air-cooled condenser mostly,
Refrigerant agent releases heat in Bottomhole pressure, and air flows between the outer fin of pipe and absorbs the heat that refrigerant agent is discharged, by cold
Mediator is exchanged with the cold and hot of air, realizes cooling in summer.
At present conventional condenser is serpentine condenser and parallel flow condenser, but serpentine condenser by copper pipe and
Aluminium flake is constituted, and cost is higher, and processing technology is complicated, and above all produce between copper pipe and aluminium flake thermal contact resistance compared with
Greatly, the heat-sinking capability of condenser is reduced；Parallel flow condenser is made up of header, flat tube and louvered fin, using aluminium
Manufacture, net area ratio of the flat tube on air-flow direction reduces the flow resistance of air more than common pipe, relative to pipe
For belt condenser, production cost is reduced, filling quantity of refrigerant is little, compact conformation, exchange capability of heat is high；But concurrent flow is cold
The channel form of condenser is single, causes the temperature difference for refrigerant pipe road junction of each condenser tubes very big, so as to cause to change
Heat is uneven, reduces the exchange capability of heat of integral condenser.
The content of the invention
In view of this, the invention is directed to a kind of condenser, to improve the demand of exchange capability of heat.
To reach above-mentioned purpose, what the technical scheme of the invention was realized in：
A kind of condenser, it includes the first refrigeration piping component, and the first refrigeration piping component is included through at least one
The secondary refrigeration piping being bent to form；
The bending place of the refrigeration piping is the bending segment of refrigeration piping, and the other parts of the refrigeration piping are substrate
Section, and connected by bending segment between two neighboring substrate segment end；
Upper and lower two end faces of substrate segment are provided with multiple row fins set parallel to each other, and each column fins set is by multiple mutually equal
Capable fin composition is alternate between the fin of adjacent two row fins set to set up and parallel to each other；
The outer face of bending segment is provided with multiple row rib wing group parallel to each other, and each column rib wing group is by multiple rib wings parallel to each other
Composition is alternate between the rib wing of adjacent two row rib wing group to set up and parallel to each other；
Fin root is additionally provided with the madial wall of the bending segment；
The pipe path that refrigerant through hole forms refrigeration piping is opened up on the end face of refrigeration piping.
Further, the longitudinal section of the refrigerant through hole is quadrangle, corrugated or triangle, and the refrigerant through hole is by cold
One end of solidifying pipeline extends to the other end of the condensation pipe.
Further, the refrigerant through-hole wall is provided with multiple projections.
Further, the refrigeration piping is aluminium material pipeline.
Further, it is provided with processing groove on the lower surface of the edge of substrate, the processing groove opens up direction with multiple wings
Piece group sets up direction parallel.
Further, the refrigeration piping is integrally formed with fin and rib wing.
Further, the cross section of the fin and rib wing is waveform.
Further, the gap between the adjacent two row fins set in the substrate segment upper end surface is more than at substrate segment lower surface
Gap between adjacent two row fins set.
Further, also mechanism is passed through including refrigerant, it includes into refrigerant pipe, goes out refrigerant pipe and connector, described
The arrival end of refrigeration piping is connected by connector with refrigerant pipe is entered, and the port of export of the refrigeration piping passes through connector and goes out
Refrigerant pipe is connected, and connecting hole is provided with the side wall of the connector, and the arrival end and the port of export of the refrigeration piping pass through
Corresponding connecting hole and connector connects.
Further, the connector is hollow cylinder.
Further, the first refrigeration piping component is by a refrigeration piping or multiple refrigeration piping groups in parallel
Into.
Further, also including the second refrigeration piping component, the second refrigeration piping component includes that at least two is in parallel
The refrigeration piping, the first refrigeration piping component connects with the second refrigeration piping component.
Further, also mechanism is passed through including refrigerant, it includes the second refrigeration piping component, enters refrigerant pipe, goes out refrigerant
Pipeline and connector, the second refrigeration piping component includes the refrigeration piping of at least two parallel connections, and the first refrigeration piping component includes
One refrigeration piping or multiple refrigeration pipings in parallel；It is described enter refrigerant pipe and the second refrigeration piping component enter refrigerant mouth
Connected by connector, the second refrigeration piping component go out refrigerant mouth and the first refrigeration piping component enter the connection of refrigerant mouth, the
Going out refrigerant mouth and going out refrigerant pipe for one refrigeration piping component is connected by connector.
The substrate segment in the refrigeration piping in refrigeration piping and the second refrigeration piping component in first refrigeration piping component
Quantity is identical or different.
Further, also including positioning component, it includes prelocalization plate and rear position plate, and the prelocalization plate is provided with many
Prelocalization escape groove is formed between the individual prelocalization dividing plate for extending downwardly and two prelocalization dividing plates, the rear position plate is provided with
Position escape groove after being formed between grid spacer after multiple rear grid spacers for extending downwardly and two, the prelocalization plate and after
Location-plate sets up separately in the rear and front end of refrigeration piping, and the prelocalization dividing plate is plugged in the bending segment of refrigeration piping front end, institute
State rear grid spacer to be plugged in the bending segment of refrigeration piping rear end.
Further, prelocalization plate lower section is provided with corresponding front plugboard, be provided with the front plugboard with
The corresponding front inserting groove of prelocalization dividing plate, the prelocalization plate by prelocalization dividing plate and the grafting of front inserting groove coordinate and with it is front
Plugboard connects, and the refrigeration piping front end is placed between prelocalization plate and front plugboard.
Further, rear position plate lower section is provided with corresponding rear plugboard, be provided with the rear plugboard with
The corresponding rear inserting groove of grid spacer afterwards, the rear position plate by rear grid spacer and the grafting of rear inserting groove coordinate and with it is rear
Plugboard connects, and the refrigeration piping rear end is placed between rear position plate and rear plugboard.
Relative to prior art, a kind of condenser described in the invention has the advantage that：
(1) to be provided with multiple row parallel to each other for upper and lower two end faces of the substrate segment of the refrigeration piping described in the invention
Fins set, the fin between two row adjacent fins groups is alternate and parallel to each other, increased air disturbance, increases area of dissipation, together
When also improve radiating effect.
(2) bending segment of refrigeration piping described in the invention is provided with rib wing, and such design contributes to reducing pipeline
The variable quantity of interior bone area, and then avoid the feelings that whole refrigeration is affected because of the reduction of pipeline interior bone area
Condition occurs, while also improving the heat exchange surface area of refrigeration piping by the increase of rib wing, and then increases the heat exchange of refrigeration piping
Ability.
(3) fin root described in the invention sets up the intensity of the refrigeration piping for further improving bending segment, and then reduces
Deformation degree inside the pipeline produced during bending.
(4) gap on substrate segment upper surface described in the invention between adjacent two row fins set is more than substrate segment lower end
Gap on face between adjacent two row fins set, under conditions of processing is met, increases area of dissipation, improves radiating effect.
(5) the shape design of the refrigerant through hole longitudinal section described in the invention can be improved when refrigerant flows through through hole and freezed
The heat transfer effect of pipeline.
(6) the invention is by using multigroup refrigeration piping and being unified into the first refrigeration piping component, one or more system
Cold pipeline constitutes the second refrigeration piping component, and going out between refrigerant mouth and the second cooling assembly for the first cooling assembly connects, can make
The runner variation of refrigerant agent, heat exchange is uniform, strengthens exchange capability of heat；Simultaneously multigroup bending refrigeration piping is connected using connector
Together, the flow direction of refrigerant agent can be controlled by connector, convenient disassembly is easy to maintenance.
(7) the invention adopts multichannel structural design, have adjusted the circulation of refrigerant agent, changes flowing resistance
Power, and change the entire length of pipeline so that the dischargeable capacity of condenser maximizes the use, and strengthens exchange capability of heat.
(8) structure design of the positioning component described in the invention can efficiently solve the refrigeration piping being bent to form
The problem that cannot be fixed, simultaneously as structure design is simple, so also will not additionally increase excessive cost.
Description of the drawings
The accompanying drawing for constituting the part of the invention is used for providing further understanding the invention, present invention wound
The schematic description and description made does not constitute the improper restriction to the invention for explaining the invention.
In accompanying drawing：
Fig. 1 is a kind of overall structure scheme of installation of the condenser described in the invention embodiment；
Fig. 2 is the refrigeration piping structural representation described in the invention embodiment.
Description of reference numerals：
1- refrigeration pipings；2- goes out refrigerant pipe；3- enters refrigerant pipe；4- connectors；41- connecting holes；5- fins；7- is basic
Section；8- bending segments；81- bending segment madial walls；9- rib wings；10- prelocalization plates；101- prelocalization escape groove；Position after 11- every
Plate；Escape groove is positioned after 111-；Plugboard after 12-；Plugboard before 13-；14- rib wing groups；15- fins sets.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the invention can
To be mutually combined.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " on ", D score,
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward " is
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description, rather than indicates
Or the device or element of hint indication with specific orientation, with specific azimuth configuration and operation, therefore must not be understood that
It is the restriction to the invention.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating
Or hint relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
Feature can express or implicitly include one or more this feature.In the description of the invention, unless separately
It is described, " multiple " are meant that two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly
Connection；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, can be by concrete condition understanding
State concrete meaning of the term in the invention.
Below with reference to the accompanying drawings and in conjunction with the embodiments describing the invention in detail.
As illustrated in fig. 1 and 2, a kind of condenser, it includes the first refrigeration piping component, the first refrigeration piping component bag
Include the refrigeration piping 1 through being bent to form at least one times.
The refrigeration piping 1 is aluminium material pipeline.
The bending place of the refrigeration piping 1 is the bending segment 8 of refrigeration piping 1, and the other parts of the refrigeration piping 1 are base
Plate section 7, bending segment madial wall 81 is additionally provided with fin root (the residual fin that a fin mill off part is carried over).
Four substrate segments 7 parallel to each other and three bending segments 8 for connecting the two neighboring end of substrate segment 7；Substrate segment 7
Upper and lower two end faces are respectively equipped with three row fins set 15 parallel to each other, and it is parallel to each other that the lateral surface of bending segment 8 is provided with three row
Rib wing group 14, the gap on the upper surface of substrate segment 7 between adjacent two row fins set 15 is more than on the lower surface of substrate segment 7 adjacent two
Gap between row fins set 15；Each column fins set 15 is made up of multiple fins 5 parallel to each other, and each column rib wing group 15 is by multiple
Rib wing 5 parallel to each other is constituted.
In use, when heat is flowed on the surface of refrigeration piping 1, the first fins set is flowed through, is flowed to
During the second fins set, because the fin in the second fins set is between the two adjacent fins of the first fins set, heat flow is risen
Act on to certain flow-disturbing, therefore heat is when the second fins set is flowed through, the flow direction of heat from all directions, increases heat and wing
The contact area of piece 5, in the same manner, heat flows to the 3rd fin component by the second fin component, further increases radiating contact surface
Product, so as to increase radiating effect.
And the fin 5 and rib wing 9 can select rippled fin.
It is quadrangle, corrugated or triangle refrigerant through hole that longitudinal section is provided with the refrigeration piping 1, while this is cold
Multiple projections are may also set up in matchmaker's through hole for increasing heat exchange area, the refrigerant through hole extends to institute by one end of condensation pipe 1
The other end of condensation pipe 1 is stated, condensed material passes through whole condensation pipe 1 by the refrigerant through hole.
And the condensation pipe 1 is integrally formed with fin 5 and rib wing 9.
Also include the second refrigeration piping component, enter refrigerant pipe 3, go out refrigerant pipe 2 and connector 4, wherein the second refrigeration
Conduit assembly includes the refrigeration piping 1 of three parallel connections, and the first refrigeration piping component includes a refrigeration piping 1；Enter refrigerant pipe 3
Connected by connector 4 with the refrigerant mouth that enters of the second refrigeration piping component, the second refrigeration piping component goes out refrigerant mouth and first
The refrigerant mouth that enters of refrigeration piping component connects, and going out refrigerant mouth and going out refrigerant pipe 2 for the first refrigeration piping component passes through connector 4
Connection；Refrigeration piping 1 in wherein the second refrigeration piping component includes that six substrate segments 7 adjacent to each other and five connections are adjacent
The bending segment 8 of two ends of substrate segment 7, the refrigeration piping 1 in the first refrigeration piping component includes four substrates adjacent to each other
Section 7 and three bending segments 8 for connecting the two neighboring end of substrate segment 7, on two end faces up and down of substrate segment 7 waveform is equipped with
Fin, the lateral surface of bending segment 8 is provided with waveform rib wing 9；Connector 4 be hollow cylinder, side be provided with connecting hole 41 and
There is end socket one end.
In use, the connector 4 of three refrigeration pipings 1 in the second refrigeration piping component of control, refrigerant are opened
Agent is then entered in three refrigeration pipings 1 simultaneously, and refrigerant agent flows out in each refrigeration piping 1, and will flow through three refrigeration pipings 1
Refrigerant agent converge it is integral, and flow into one two in the first cooling assembly bending refrigeration piping 1 in, then flow through the first system
Cold conduit assembly, is then out.
When fixed refrigeration piping 1, the cooperation of prelocalization plate 10 and front plugboard can be passed through by refrigeration piping 1
Front end is fixed at a position, and the rear end of refrigeration piping 1 be then to be set up by rear position plate and the cooperation of rear plugboard and
It is fixed, now installing hole can be opened up on prelocalization plate 10 and rear position plate, it is fixedly connected with other materials by installing hole,
So as to realize that the fixed of whole condenser is required.
The preferred embodiment of the invention is the foregoing is only, it is all at this not to limit the invention
Within the spirit and principle of innovation and creation, any modification, equivalent substitution and improvements made etc. should be included in the invention
Protection domain within.
Claims (10)
1. a kind of condenser, it is characterised in that：Including the first refrigeration piping component, the first refrigeration piping component include through
The refrigeration piping (1) being bent to form at least one times；
The bending place of the refrigeration piping (1) for refrigeration piping (1) bending segment (8), the other parts of the refrigeration piping (1)
To be connected by bending segment (8) between substrate segment (7), and two neighboring substrate segment (7) end；
Upper and lower two end faces of substrate segment (7) are provided with multiple row fins set parallel to each other (15), and each column fins set (15) is by multiple
Fin (5) composition parallel to each other is alternate between the fin (5) of adjacent two row fins set (15) to set up and parallel to each other；
The outer face of bending segment (8) is provided with multiple row rib wing group (14) parallel to each other, and each column rib wing group (14) is by multiple mutually equal
Capable rib wing (9) composition is alternate between the rib wing (9) of adjacent two row rib wing group (14) to set up and parallel to each other；
Fin root is additionally provided with the madial wall (81) of the bending segment；
The pipe path that refrigerant through hole forms refrigeration piping (1) is opened up on the end face of refrigeration piping (1).
2. a kind of condenser according to claim 1, it is characterised in that：The longitudinal section of the refrigerant through hole be quadrangle,
Corrugated or triangle, the refrigerant through hole is extended to the other end of the condensation pipe (1) by one end of condensation pipe (1).
3. a kind of condenser according to claim 1, it is characterised in that：It is provided with the lower surface of the substrate segment (7) and adds
Set up direction parallel with multiple fins sets (15) in work groove, the direction that opens up of the processing groove.
4. a kind of condenser according to claim 1, it is characterised in that：The refrigeration piping (1) and fin (5) and rib wing
(9) it is integrally formed.
5. a kind of condenser according to claim 1, it is characterised in that：The cross section of the fin (5) and rib wing (9) is
Waveform.
6. a kind of condenser according to claim 1, it is characterised in that：Substrate segment (7) upper end surface adjacent two arranges
Gap between fins set (15) is more than the gap between adjacent two row fins set (15) at substrate segment (7) lower surface.
7. a kind of condenser according to claim 1, it is characterised in that：Also mechanism is passed through including refrigerant, it is included into cold
Matchmaker's pipeline (3), go out refrigerant pipe (2) and connector (4), the refrigeration piping (1) arrival end is by connector (4) and enters cold
Matchmaker's pipeline (3) is connected, and the port of export of the refrigeration piping (1) is connected by connector (4) with refrigerant pipe (2) is gone out, the company
Connecting hole (41) is provided with the side wall of joint (4), the arrival end and the port of export of the refrigeration piping (1) is by corresponding
Connecting hole (41) and connector (4) connect.
8. a kind of condenser according to claim 7, it is characterised in that：The first refrigeration piping component is by a refrigeration
Pipeline (1) or multiple refrigeration piping (1) compositions in parallel.
9. a kind of condenser according to claim 1, it is characterised in that：Also mechanism is passed through including refrigerant, it includes second
Refrigeration piping component, enter refrigerant pipe (3), go out refrigerant pipe (2) and connector (4), the second refrigeration piping component is included at least
The refrigeration piping (1) of two parallel connections, the first refrigeration piping component includes a refrigeration piping (1) or multiple refrigerator pipes in parallel
Road (1)；It is described enter refrigerant pipe (3) and the second refrigeration piping component the refrigerant mouth that enters connected by connector (4), the second refrigeration
Conduit assembly go out refrigerant mouth and the first refrigeration piping component enter the connection of refrigerant mouth, the first refrigeration piping component goes out refrigerant mouth
Connected by connector (4) with refrigerant pipe (2) is gone out；
The substrate in the refrigeration piping (1) in refrigeration piping (1) and the second refrigeration piping component in first refrigeration piping component
Section (7) quantity is identical or different.
10. a kind of condenser according to claim 1, it is characterised in that：Also include positioning component, it includes prelocalization plate
(10) and rear position plate, the prelocalization plate (10) is provided with multiple prelocalization dividing plates for extending downwardly and two prelocalization dividing plates
Between form prelocalization escape groove (101), the rear position plate is provided with multiple rear grid spacers (11) and two for extending downwardly
Escape groove (111) is positioned after being formed between individual rear grid spacer (11), the prelocalization plate (10) and rear position plate set up separately in system
The rear and front end of cold pipeline (1), the prelocalization dividing plate is plugged in the bending segment (8) of refrigeration piping (1) front end, described rear fixed
Position dividing plate (11) is plugged in the bending segment (8) of refrigeration piping (1) rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621082141.3U CN206160567U (en) | 2016-09-27 | 2016-09-27 | Condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621082141.3U CN206160567U (en) | 2016-09-27 | 2016-09-27 | Condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206160567U true CN206160567U (en) | 2017-05-10 |
Family
ID=58651930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621082141.3U Active CN206160567U (en) | 2016-09-27 | 2016-09-27 | Condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206160567U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382770A (en) * | 2016-09-27 | 2017-02-08 | 深圳山源电器股份有限公司 | Condenser |
| CN112218501A (en) * | 2020-10-13 | 2021-01-12 | 中国电子科技集团公司第三十八研究所 | Vertical pile rhombus type rib fin turbulence centralized heat dissipation device |
-
2016
- 2016-09-27 CN CN201621082141.3U patent/CN206160567U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382770A (en) * | 2016-09-27 | 2017-02-08 | 深圳山源电器股份有限公司 | Condenser |
| CN112218501A (en) * | 2020-10-13 | 2021-01-12 | 中国电子科技集团公司第三十八研究所 | Vertical pile rhombus type rib fin turbulence centralized heat dissipation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206440153U (en) | A kind of pipe wing micro-channel heat exchanger | |
| CN107677147B (en) | Heat-exchanging component, heat-exchange system and indoor heating system | |
| CN107314573B (en) | A kind of micro channel heat exchanger | |
| CN201047729Y (en) | Air heat exchanger heat exchange core | |
| CN105352345B (en) | Micro-channel heat exchanger and its air conditioner | |
| CN109539824A (en) | A kind of novel micro- logical plate and the radiator and air conditioner end equipment for having micro- logical plate | |
| CN102748903B (en) | Heat exchanger and flat heat exchange tube thereof | |
| CN202993924U (en) | Microchannel heat exchanger | |
| CN206160567U (en) | Condenser | |
| CN104896985B (en) | Finned heat exchanger for air-conditioner | |
| CN105091412B (en) | A kind of Thermal Performance of Micro Channels device assembly and air-conditioning | |
| CN207317318U (en) | Heat exchange module, heat exchanger and refrigerator | |
| CN207610570U (en) | Heat exchanger, heat-exchange system and indoor heating system | |
| CN105423649B (en) | Micro-channel heat exchanger and air conditioner with same | |
| CN209263166U (en) | A kind of air conditioner end equipment | |
| CN207438860U (en) | Indoor heat exchanger, air conditioner indoor unit and air conditioner | |
| CN203011010U (en) | Oblique-inserting type parallel-flow heat exchanger | |
| CN106382770A (en) | Condenser | |
| CN206739939U (en) | Micro-channel heat exchanger and dehumidifier | |
| CN102748977A (en) | Flat heat exchange tube of heat exchanger and heat exchanger of flat heat exchange tube | |
| CN106197094B (en) | A kind of heat exchanger | |
| CN210051023U (en) | Heat exchanger and air conditioner | |
| CN208059081U (en) | Cabinet type indoor machine and air conditioner | |
| CN209085398U (en) | One kind liquidates counterflow gas heat exchanger | |
| CN108344210B (en) | Parallel flow heat exchange system for improving heat exchange efficiency |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |