CN204442036U - For the stator of motor, motor and compressor - Google Patents
For the stator of motor, motor and compressor Download PDFInfo
- Publication number
- CN204442036U CN204442036U CN201520176909.2U CN201520176909U CN204442036U CN 204442036 U CN204442036 U CN 204442036U CN 201520176909 U CN201520176909 U CN 201520176909U CN 204442036 U CN204442036 U CN 204442036U
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- stator
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- compressor
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Abstract
The utility model discloses a kind of stator for motor, motor and compressor, described stator comprises: stator core and stator winding, stator core is formed with circumferentially spaced apart multiple stator slot; Stator winding comprises multiple stator conductors, each stator conductors is formed as U-shape substantially, the two ends of multiple stator conductors are inserted in multiple stator slot respectively, and the two ends of multiple stator conductors connect to form stator winding respectively, wherein multiple stator conductors is arranged along the radial direction of stator core, the MgO-ZrO_2 brick of motor is that q, q meet: q >=2.According to the stator for motor of the present utility model, by adopting the stator winding comprising the multiple stator conductors being substantially formed as U-shape, and the radial direction of multiple stator conductors along stator core is arranged, and MgO-ZrO_2 brick is set to be more than or equal to 2, when the motor application with this stator is in compressor, the efficiency of compressor can be improved, and reduce the vibration noise of compressor.
Description
Technical field
The utility model relates to technical field of motor manufacture, especially relates to a kind of stator for motor, motor and compressor.
Background technology
Point out in correlation technique, convertible frequency air-conditioner efficiency is high, environmental degree of comfort good, becomes the main flow of air conditioner industry gradually.Magneto power density is high, performance good, becomes the main drive motors of frequency converting air-conditioner compressor.At present, in order to improve compressor efficiency, the stator module of motor generally adopts fractional-slot concentratred winding, can reduce the resistance loss of compressor like this, but bring the problem that rotator type compressor of air conditioner vibration noise worsens, and user is also more and more higher for the quiet requirement of compressor of air conditioner thereupon.
Vibration noise due to magneto derives from the electromagnetic rotating Reeb of motor internal, integer groove distributed winding is owing to having the advantage such as symmetry and distributivity, its electromagnetic vibration noise obviously will be better than fractional-slot concentratred winding motor conventional in rotator type compressor of air conditioner, but concentratred winding motor is due to can coiling on monodentate, winding overhang is shorter, more neat, so compressor efficiency is higher; And distributed winding motor, the motor winding span that especially MgO-ZrO_2 brick is more is longer, and winding overhang is higher, thus causes compressor efficiency poor, and this just causes the contradiction of rotator type compressor of air conditioner on noise and efficiency and cannot take into account.
Utility model content
The utility model is intended at least to solve one of technical problem existed in prior art.For this reason, an object of the present utility model is to propose a kind of stator for motor, when the motor application with this stator is in compressor, can improve the efficiency of compressor, and reduce the vibration noise of compressor.
Another object of the present utility model is to propose a kind of motor with said stator.
Another object of the present utility model is to propose a kind of compressor with above-mentioned motor.
According to the stator for motor of the utility model first aspect, comprising: stator core, described stator core is formed with circumferentially spaced apart multiple stator slot; And stator winding, described stator winding comprises multiple stator conductors, each described stator conductors is formed as U-shape substantially, the two ends of described multiple stator conductors are inserted in described multiple stator slot respectively, and the two ends of described multiple stator conductors connect to form described stator winding respectively, wherein multiple described stator conductors is arranged along the radial direction of described stator core, and the MgO-ZrO_2 brick of described motor is q, and described q meets: q >=2.
According to the stator for motor of the present utility model, by adopting the stator winding comprising the multiple stator conductors being substantially formed as U-shape, and the radial direction of multiple stator conductors along stator core is arranged, and MgO-ZrO_2 brick is set to be more than or equal to 2, when the motor application with this stator is in compressor, the efficiency of compressor can be improved, and reduce the vibration noise of compressor.
Particularly, each described stator conductors comprises first body, the second body and connecting portion, described connecting portion is connected between described first body and described second body, wherein said connecting portion comprise be connected with each other and stagger in the radial direction of described stator core arrange the first sub-connection portion and the second sub-connection portion.
Alternatively, the two ends of each described stator conductors bend towards the center position of described stator core.
Alternatively, the shape of cross section of each described stator conductors is rectangle.
Particularly, each described stator conductors comprises insulated hull and is located at and leads core in described insulated hull.
Alternatively, leading core described in is copper core or aluminium core.
Alternatively, the two ends of described multiple stator conductors are welded to connect or beat terminal connection respectively.
Alternatively, each described stator slot is closed slot.
Or alternatively, each described stator slot is open slot, and the A/F of each described stator slot is less than or equal to 1.5mm.
According to the motor of the utility model second aspect, comprise the stator for motor according to the above-mentioned first aspect of the utility model.
According to the compressor of the utility model third aspect, comprise the motor according to the above-mentioned second aspect of the utility model.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the front view of the stator for motor according to the utility model embodiment;
Fig. 2 is the vertical view of the stator shown in Fig. 1;
Fig. 3 is the assembling schematic diagram of the stator core shown in Fig. 1 and a stator conductors;
Fig. 4 is the explosive view of the stator core shown in Fig. 3 and a stator conductors;
Fig. 5 is the schematic diagram of the stator core shown in Fig. 1;
Fig. 6 a is the stereogram of the stator conductors shown in Fig. 1;
Fig. 6 b is another stereogram of the stator conductors shown in Fig. 1;
Fig. 7 is the cross sectional representation of Fig. 6 a and the stator conductors shown in Fig. 6 b;
Fig. 8 is the schematic diagram of the compressor according to the utility model embodiment.
Reference numeral:
100: stator;
1: stator core; 11: stator slot; 12: centre bore;
2: stator winding; 21: stator conductors;
211: first body; 212: the second bodies; 213: connecting portion;
214: the first sub-connection portions; 215: the second sub-connection portions;
216: protruding; 217: insulated hull; 218: lead core;
200; Compressor.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " transverse direction ", " length ", " width ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Below with reference to Fig. 1-Fig. 8, the stator 100 for motor (scheming not shown) according to the utility model embodiment is described.Wherein, the motor with this stator 100 may be used in compressor 200 such as rotator type compressor of air conditioner.Certainly, those skilled in the art are appreciated that the motor with this stator 100 can also be used in the compressor 200 of other type, and are not limited to rotator type compressor of air conditioner.
As shown in Figure 1, according to the stator 100 for motor of the utility model first aspect embodiment, stator core 1 and stator winding 2 is comprised.
Stator core 1 is formed with circumferentially spaced apart multiple stator slot 11, such as, with reference to Fig. 5, stator core 1 is formed with through centre bore, the rotor (scheming not shown) of motor can be located in centre bore rotationally, now the shape of cross section of stator core 1 is roughly annular, multiple stator slot 11 is uniform intervals distribution in the circumference of stator core 1, distance between the inner (i.e. the one end at adjacent stator iron core 1 center) of each stator slot 11 and the inner peripheral surface of stator core 1 is less than the distance between its outer end (namely away from the one end at stator core 1 center) and the outer peripheral face of stator core 1, and each stator slot 11 runs through the corresponding end-faces of stator core 1 (such as respectively, upper surface shown in Fig. 3 and lower surface).Be appreciated that the number of stator slot 11 and the arrangement on stator core 1 etc. can according to the difference of real electrical machinery type adaptive change, the utility model does not make particular determination to this.
Wherein, stator core 1 can form by multiple stator 100 punching is axially stacked.Be appreciated that the concrete shape of stator 100 punching and number can according to the difference of real electrical machinery type adaptive change, the utility model does not do concrete restriction to this.
Stator winding 2 comprises multiple stator conductors 21, and each stator conductors 21 is formed as U-shape substantially, here, it should be noted that, the shape that " being substantially formed as U-shape " can be understood as each stator conductors 21 is identical with letter " U "; Or the shape of each stator conductors 21 has some difference with letter " U ", such as, the shape that the middle part of each stator conductors 21 is roughly straightway (as shown in Figure 3) or each stator conductors 21 more may trend towards letter " C " etc., but no matter be any situation, each stator conductors 21 is all formed as that one end is closed, the structure of one end open.
The two ends of multiple stator conductors 21 are inserted in multiple stator slot 11 respectively, and the two ends of multiple stator conductors 21 connect to form stator winding 2 respectively.Such as, with reference to Fig. 1 composition graphs 2 and Fig. 3, the two ends of each stator conductors 21 extend into respectively in multiple stator slot 11 wherein in two, now each stator conductors 21 strides across the stator slot 11 of some, the concrete number of the stator slot 11 striden across can according to dissimilar motor adaptive change, the utility model does not do concrete restriction to this.The two ends of multiple stator conductors 21, through after corresponding stator slot 11, couple together according to motor winding configuration separately, form the end to end complete stator winding 2 of each coil of each phase.
Multiple stator conductors 21 is arranged along the radial direction of stator core 1, as depicted in figs. 1 and 2, when one end of the partial stator conductor 21 in multiple stator conductors 21 extend in same stator slot 11, this part stator conductors 21 is arranged successively along the radial direction of stator core 1, wherein, this part stator conductors 21 can be spaced apart from each other in the radial direction of stator core 1, also can be contact.Thus, significantly reduce the height of stator winding 2 end, when the motor application with this stator 100 is in compressor 200 such as rotator type compressor of air conditioner, the resistance value of motor can be reduced, improve the efficiency of compressor 200 such as rotator type compressor of air conditioner.
The MgO-ZrO_2 brick of motor is that q, q meet: q >=2, thus, because the MgO-ZrO_2 brick of motor is more, thus vibration noise is less, when this motor application is in compressor 200 such as rotator type compressor of air conditioner, the quiet requirement of user to rotator type compressor of air conditioner can be met.Here, it should be noted that, the definition of " MgO-ZrO_2 brick ", known by those skilled in the art, is not described in detail here.
According to the stator 100 for motor of the utility model embodiment, by adopting the stator winding 2 comprising the multiple stator conductors 21 being substantially formed as U-shape, and the radial direction of multiple stator conductors 21 along stator core 1 is arranged, and MgO-ZrO_2 brick is set to be more than or equal to 2, when the motor application with this stator 100 is in compressor 200 such as rotator type compressor of air conditioner, the efficiency of compressor 200 such as rotator type compressor of air conditioner can be improved, and reduce the vibration noise of compressor 200 such as rotator type compressor of air conditioner.
According to a specific embodiment of the present utility model, each stator conductors 21 comprises first body 211, second body 212 and connecting portion 213, connecting portion 213 is connected between first body 211 and the second body 212, such as, as shown in Figure 6 b, first body 211 and the second body 212 parallel to each other and extend all along the vertical direction, the two ends of connecting portion 213 are connected with the upper end of the second body 212 with the upper end of first body 211 respectively.
Wherein, connecting portion 213 comprise be connected with each other and stagger in the radial direction of stator core 1 arrange the first sub-connection portion 214 and the second sub-connection portion 215, specifically, with reference to Fig. 6 b composition graphs 2, the free end in the first sub-connection portion 214 (such as, left end in Fig. 6 b) be connected with the upper end of first body 211, the free end in the second sub-connection portion 215 (such as, right-hand member in Fig. 6 b) be connected with the upper end of the second body 212, the plane at the first sub-connection portion 214 and first body 211 place and the plane at the second place, sub-connection portion 215 are respectively two planes, namely the first sub-connection portion 214 and the second sub-connection portion 215 lay respectively in two different planes.Thus, owing to being dodged mutually by bending between multiple stator conductors 21, make the layout of stator winding 2 on stator core 1 compacter, further reduce taking up room of stator winding 2.
Further, as shown in Fig. 2, Fig. 3, Fig. 6 a and Fig. 6 b, first sub-connection portion 214 and the second sub-connection portion 215 are equipped with protruding 216, protruding 216 protrude towards the direction of first body 211 and the second body 212, such as, protruding 216 can be protruded towards the direction of contiguous first body 211 and the second body 212 by a part for the side surface away from first body 211 and the second body 212 in the first sub-connection portion 214 and the second sub-connection portion 215 and formed.
Wherein, the first sub-connection portion 214 and the second sub-connection portion 215 are respectively equipped with multiple protruding 216, multiple protruding 216 are spaced apart from each other setting on the length direction in the first sub-connection portion 214 and the second sub-connection portion 215.Be appreciated that protruding 216 number can according to actual requirement adaptive change, the utility model does not do concrete restriction to this.
Alternatively, the two ends of each stator conductors 21 bend towards the center position of stator core 1.As shown in Figure 1, insert after in stator slot 11 in stator conductors 21, can by the free end of the first body 211 of stator conductors 21 and the second body 212 (such as, lower end in Fig. 1) towards the direction bending of connecting portion 213, thus, not only facilitate the connection between stator conductors 21, and reduce further the end height of stator winding 2, when the motor application with this stator 100 is in compressor 200 such as rotator type compressor of air conditioner, the efficiency of compressor 200 such as rotator type compressor of air conditioner can be improved further.
With reference to Fig. 6 a and Fig. 6 b composition graphs 7, the shape of cross section of each stator conductors 21 is rectangle, thus, by adopting the stator conductors 21 of rectangle, the utilance of stator slot 11 is improved, finally improves the efficiency of compressor 200 such as rotator type compressor of air conditioner.
Alternatively, the shape of cross section of each stator conductors 21 can be square, also can be rectangle.Wherein, the shape of cross section of each stator conductors 21 is preferably rectangle, to facilitate bending.Certainly, those skilled in the art are appreciated that the shape of cross section of each stator conductors 21 can also be circular, ellipse, Long Circle or other polygon etc. than a rectangle.
Specifically, as shown in Figure 7, each stator conductors 21 comprises insulated hull 217 and is located at and leads core 218 in insulated hull 217.Wherein, lead core 218 and be preferably made up of the material that electric conductivity is good, such as copper core or aluminium core.
The two ends of multiple stator conductors 21 can connect respectively by the mode of welding, and welding manner preferably adopts fusion weld, to reduce the contact resistance between stator conductors 21.Certainly, the connected mode between stator conductors 21 is not limited to welding, and other connected mode that can reduce the contact resistance between stator conductors 21 all in the utility model covering scope, such as, plays terminal connection etc.
According to an embodiment of the present utility model, with reference to Fig. 5, each stator slot 11 is closed slot, and now stator slot 11 is not communicated with centre bore.Thus, the vibration noise reducing compressor 200 such as rotator type compressor of air conditioner is conducive to.Certainly, according to another embodiment of the present utility model, each stator slot 11 can also be open slot, stator slot 11 is communicated with centre bore by opening, the A/F of each stator slot 11 is less than or equal to 1.5mm, now opening small-sized of each stator slot 11, like this while ensureing that the vibration noise of compressor 200 such as rotator type compressor of air conditioner is low, can motor flux leakage be reduced, ensure the efficiency of compressor 200 such as rotator type compressor of air conditioner.Be appreciated that the concrete numerical value of the A/F of each stator slot 11 can be selected according to actual requirement.
According to the stator 100 for motor of the utility model embodiment, because MgO-ZrO_2 brick is larger, thus significantly reduce the vibration noise of compressor 200 such as rotator type compressor of air conditioner, the shape of cross section of stator conductors 21 is rectangle, improve the utilance of stator slot 11, and adopt the technique of end plug wire, significantly reduce the end height of motor, reduce the resistance loss of compressor 200 such as rotator type compressor of air conditioner to a great extent, improve the efficiency of compressor 200 such as rotator type compressor of air conditioner.
As shown in Fig. 1-Fig. 7, according to the manufacture process of the stator 100 for motor of the utility model embodiment, may be used for manufacturing the stator 100 according to the above-mentioned first aspect embodiment of the utility model.Wherein, the MgO-ZrO_2 brick of motor is that q, q meet: q >=2, because MgO-ZrO_2 brick is comparatively large, thus significantly reduces the vibration noise of compressor 200 such as rotator type compressor of air conditioner.
Specifically, the manufacture process for the stator 100 of motor comprises the following steps:
S1, prepare stator core 1 and multiple stator conductors 21;
S2, insert in multiple stator slots 11 of stator core 1 respectively by the two ends of multiple stator conductors 21, wherein multiple stator conductors 21 is arranged along the radial direction of stator core 1; And
S3, the two ends of multiple stator conductors 21 to be connected respectively.
Alternatively, in step sl, prepare each stator conductors 21 specifically to comprise the following steps:
S11, material will be led be bent into U-shaped;
S12, the middle part bending leading material being bent into U-shaped in step S11 to be laid respectively in two different planes to make the two ends of leading material.
Such as, first, material can be led by one and roughly be bent into U-shape, as shown in Figure 6 a; Then, will be bent into the middle part bending leading material after U-shaped, the left end of leading material after bending and right-hand member be not in same plane.Wherein, in order to ensure the shape leading material after bending, leading material and the harder material of material can be selected to make.
In step sl, stator core 1 can form by the punching of multiple stator 100 is stacked, but is not limited thereto.
Alternatively, between step S2 and step S3, the manufacture process of stator 100 also comprises:
S21, the center position of the two ends of the multiple stator conductors 21 inserted in step S2 in multiple stator slot 11 towards stator core 1 to be bent.Such as, connection in wave shape after the two ends of stator conductors 21 can be bent into definite shape, but be not limited thereto.Thus, not only facilitate the connection between stator conductors 21, and reduce further the end height of stator winding 2, when the motor application with this stator 100 is in compressor 200 such as rotator type compressor of air conditioner, the efficiency of compressor 200 such as rotator type compressor of air conditioner can be improved further.
In step s3, such as fusion weld can be welded between multiple stator conductors 21 and connect or play terminal connection, the contact resistance between stator conductors 21 can be reduced like this.
After stator 100 installation, as shown in Figure 1, in good order, and the top and bottom height of stator winding 2 all obviously reduces in the end of stator winding 2, thus the resistance value of motor reduces, and the efficiency of compressor 200 such as rotator type compressor of air conditioner is improved.
According to the manufacture process of the stator 100 for motor of the utility model embodiment, manufacture simple, when produced stator 100 is applied to compressor 200 such as rotator type compressor of air conditioner, the resistance loss of compressor 200 such as rotator type compressor of air conditioner obtains good control, thus reasonablely can take into account efficiency and the vibration noise of compressor 200 such as rotator type compressor of air conditioner.
According to the motor of the utility model second aspect embodiment, comprise the stator 100 for motor according to the above-mentioned first aspect embodiment of the utility model.
As shown in Figure 8, according to the compressor 200 of the utility model third aspect embodiment, comprise the motor according to the above-mentioned second aspect embodiment of the utility model.
To form according to other of the motor of the utility model embodiment and compressor 200 and operation is all known to those skilled in the art, be not described in detail here.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (11)
1. for a stator for motor, it is characterized in that, comprising:
Stator core, described stator core is formed with circumferentially spaced apart multiple stator slot; With
Stator winding, described stator winding comprises multiple stator conductors, each described stator conductors is formed as U-shape substantially, the two ends of described multiple stator conductors are inserted in described multiple stator slot respectively, and the two ends of described multiple stator conductors connect to form described stator winding respectively, wherein multiple described stator conductors is arranged along the radial direction of described stator core, and the MgO-ZrO_2 brick of described motor is q, and described q meets: q >=2.
2. the stator for motor according to claim 1, it is characterized in that, each described stator conductors comprises first body, the second body and connecting portion, described connecting portion is connected between described first body and described second body, wherein said connecting portion comprise be connected with each other and stagger in the radial direction of described stator core arrange the first sub-connection portion and the second sub-connection portion.
3. the stator for motor according to claim 1, is characterized in that, the two ends of each described stator conductors bend towards the center position of described stator core.
4. the stator for motor according to claim 1, is characterized in that, the shape of cross section of each described stator conductors is rectangle.
5. the stator for motor according to claim 1, is characterized in that, each described stator conductors comprises insulated hull and is located at leads core in described insulated hull.
6. the stator for motor according to claim 5, is characterized in that, described in lead core be copper core or aluminium core.
7. the stator for motor according to claim 1, is characterized in that, the two ends of described multiple stator conductors are welded to connect or beat terminal respectively and connect.
8. the stator for motor according to any one of claim 1-7, is characterized in that, each described stator slot is closed slot.
9. the stator for motor according to any one of claim 1-7, is characterized in that, each described stator slot is open slot, and the A/F of each described stator slot is less than or equal to 1.5mm.
10. a motor, is characterized in that, comprises the stator for motor according to any one of claim 1-9.
11. 1 kinds of compressors, is characterized in that, comprise motor according to claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176909.2U CN204442036U (en) | 2015-03-25 | 2015-03-25 | For the stator of motor, motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176909.2U CN204442036U (en) | 2015-03-25 | 2015-03-25 | For the stator of motor, motor and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204442036U true CN204442036U (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520176909.2U Expired - Fee Related CN204442036U (en) | 2015-03-25 | 2015-03-25 | For the stator of motor, motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204442036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586449A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | Conductor segment and its stator module, motor |
-
2015
- 2015-03-25 CN CN201520176909.2U patent/CN204442036U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586449A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | Conductor segment and its stator module, motor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20200325 |
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| CF01 | Termination of patent right due to non-payment of annual fee |