CN203883640U - Horizontal compressor - Google Patents
Horizontal compressor Download PDFInfo
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- CN203883640U CN203883640U CN201420111325.2U CN201420111325U CN203883640U CN 203883640 U CN203883640 U CN 203883640U CN 201420111325 U CN201420111325 U CN 201420111325U CN 203883640 U CN203883640 U CN 203883640U
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- rotor
- compression unit
- transmission device
- stator
- horizontal compressor
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Abstract
The utility model discloses a horizontal compressor. The horizontal compressor comprises a casing, a double-rotor motor arranged in the casing, a first transmission device, a second transmission device, a first compression unit and a second compression unit, wherein two ends of the double-rotor motor are symmetrically provided with the first compression unit and the second compression unit, a first power output end of the double-rotor motor is connected with the first transmission device and drives the first compression unit through the first transmission device, and a second power output end of the double-rotor motor is connected with the second transmission device and drives the second compression unit through the second transmission device. The horizontal compressor not only reduces vibration, improves reliability of equipment, but also greatly improves discharge capacity.
Description
Technical field
The utility model relates to Compressor Technology field, particularly relates to a kind of horizontal compressor.
Background technology
Rotary compressor is along with the rotation of plunger in cylinder realizes fluid compression, and this compressor, according to the difference of Setup Type, can be divided into horizontal and vertical two kinds.Horizontal compressor is widely used in the equipment such as refrigerator and air conditioner because of advantages such as its center of gravity are low.
Conventional horizontal compressor, compressor cutaway view as shown in Figure 1, can comprise shell, the motor 11 in left side is in the enclosure installed, be arranged on the compression unit 12 on shell right side, the motor 11 rear drive transmission device that powers on is realized the compression of compression unit 12 inner refrigerants.
But, in conventional horizontal compressor, rotor assembly in motor is lain on one's side, compressor cross sectional representation as shown in Figure 2, the single rotor 21 of motor is for a long time in unsupported cantilever position under Action of Gravity Field, and rotor 21 is in eccentric position, and the centrifugal force producing in the time that rotor drives the compression unit running of a side is larger, cause vibration of compressor large, poor reliability.
Utility model content
The utility model embodiment provides a kind of horizontal compressor, and the vibration producing can reduce compressor operating time improves equipment dependability.
In order to solve the problems of the technologies described above, the utility model embodiment discloses following technical scheme:
The utility model embodiment provides a kind of horizontal compressor, comprises shell, and is positioned at double-rotor machine, the first transmission device, the second transmission device, the first compression unit and second compression unit of described shell; The two ends symmetry of described double-rotor machine be provided with described the first compression unit and described the second compression unit, the first clutch end of described double-rotor machine connects described the first transmission device, and by the first compression unit described in described the first actuator drives, the second clutch end of described double-rotor machine connects described the second transmission device, and by the second compression unit described in described the second actuator drives.
As preferably, described double-rotor machine comprises the internal rotor that is positioned at described shell, external rotor and stator, described stator comprises stator core and is wound on interior winding and the outer winding on described stator core, described stator core comprises ring-type yoke portion, the outstanding multiple inner tines portion towards the inner circumferential side of described ring-type yoke portion, and towards the outstanding multiple outside tooth portion of the outer circumferential side of described ring-type yoke portion, in described inner tines portion, be wound with the described interior winding for coordinating described internal rotor, in the tooth portion of described outside, be wound with the described outer winding for coordinating described external rotor, described internal rotor rotates the inner circumferential side that is configured in described stator freely, and described external rotor is the cylindric rotation outer circumferential side that is set in described stator freely, described internal rotor is connected with described the first transmission device as described the first clutch end, and described external rotor is connected with described the second transmission device as described the second clutch end.
As preferably, described interior winding and described outer winding are separate, adopt respectively different circuit to control.
As preferably, the periphery of described stator core is step-like on the central axis direction along described stator core, one end diameter is larger, other end diameter is less, one end that diameter is larger is formed for the protuberance fixing with described outer casing inner wall, is formed for arranging the cavity of described external rotor between one end that diameter is less and the inwall of described shell.
As preferably, described stator core is fixed by described protuberance and described shell hot jacket.
As preferably, described stator core is laminated and is formed by multiple stator punchings with the first external diameter and multiple stator punching with the second external diameter, described protuberance is laminated and is formed by described multiple stator punchings with the second external diameter, and wherein, described the second external diameter is greater than described the first external diameter.
As preferably, the material of described external rotor is magnet steel.
As preferably, described the first compression unit with connect for the first air intake duct that is connected the first knockout, described the second compression unit and the second air intake duct connection for being connected the second knockout.
As preferably, the end of described the first transmission device is connected with the first fuel sucking pipe, and the end of described the second transmission device is connected with the second fuel sucking pipe.
The utility model at least has following beneficial effect:
The utility model embodiment has the double-rotor machine of double dynamical output by employing, realize the setting of symmetrical two compression units in compressor, also be twin-tub setting, thereby balance compressor stressed, avoid the defect of the peculiar rotor assembly cantilever of traditional single-cylinder horizontal compressor, the present embodiment has not only reduced the vibration of compressor, has improved the reliability of equipment, and has greatly improved the discharge capacity of compressor.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.The following drawings is not deliberately drawn by actual size equal proportion convergent-divergent, focuses on illustrating purport of the present utility model.
Fig. 1～Fig. 2 is the structural representation of horizontal compressor in prior art;
Fig. 3 is the structural representation of a kind of horizontal compressor of the utility model embodiment;
Fig. 4 is the cross-sectional schematic of a kind of horizontal compressor of the utility model embodiment;
Fig. 5 is the schematic cross-section of a kind of stator core in the utility model embodiment;
Fig. 6 a is the end-view in the utility model embodiment with the stator core of protuberance;
Fig. 6 b is the B-B cutaway view shown in Fig. 6 a with the stator core of protuberance;
Fig. 7 is the schematic cross-section of a kind of internal rotor in the utility model embodiment;
Fig. 8 is the schematic cross-section of a kind of external rotor in the utility model embodiment;
Fig. 9 is the schematic cross-section that in the utility model embodiment, stator, external rotor, internal rotor match.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
A lot of details are set forth in the following description so that fully understand the utility model, but the utility model can also adopt other to be different from alternate manner described here and implement, and therefore the utility model is not subject to the restriction of following public specific embodiment.
Secondly, the utility model is described in detail in conjunction with schematic diagram, in the time that the utility model embodiment is described in detail in detail; for ease of explanation; the profile of indication device structure can be disobeyed general ratio and be done local amplification, and described schematic diagram is example, and it should not limit the scope of the utility model protection at this.In addition in actual fabrication, should comprise, the three-dimensional space of length, width and the degree of depth.
Below in conjunction with drawings and Examples, the technical solution of the utility model is described.
Referring to Fig. 3, it is the structural representation of a kind of horizontal compressor of the utility model embodiment.
This horizontal compressor comprises shell 31, and is positioned at the double-rotor machine with double dynamical output 32, the first transmission device 33, the second transmission device 34, the first compression unit 35 and second compression unit 36 of this shell 31.
This double-rotor machine 32 has separate double dynamical output function, and also the output of two power is separate.In relative two clutch ends of this double-rotor machine 32, the first clutch end connects the first transmission device 33, the second clutch end connects the second transmission device 34, the first transmission device 33 connects again the first compression unit 35, the second transmission device 34 connects again the second compression unit 36, thereby, the two ends that are arranged on this double-rotor machine 32 of the first compression unit 35 and the second compression unit 36 symmetries.Wherein, parts and structure that the first compression unit 35 and the second compression unit 36 comprise with existing compression unit are all identical or similar, all can comprise as parts such as base bearing, supplementary bearing, cylinder, rollers.
On double-rotor machine 32, when electric operation, can drive the first compression unit 35 to realize compression by the first transmission device 33, drive the second compression unit 36 to realize compression by the second transmission device 34.
The utility model embodiment has the double-rotor machine of double dynamical output by employing, realize the setting of symmetrical two compression units in compressor, also be twin-tub setting, thereby balance compressor stressed, avoid the defect of the peculiar rotor assembly cantilever of traditional single-cylinder horizontal compressor, the present embodiment has not only reduced the vibration of compressor, has improved the reliability of equipment, and has greatly improved the discharge capacity of compressor.
Referring to Fig. 4, it is the cutaway view of a kind of horizontal compressor of the utility model embodiment.
This horizontal compressor comprises shell 40, double-rotor machine (stator, internal rotor 412 and external rotor 413), the first transmission device (bent axle 42), the second transmission device (drive plate 431, power transmission shaft 432), the first compression unit (the first base bearing 441, the first cylinder 442, the first roller 443 and the first supplementary bearing 444), the second compression unit (the second base bearing 451, the second cylinder 452, the second roller 453 and the second supplementary bearing 454), the first fuel sucking pipe 46, the second fuel sucking pipe 47, the first air intake duct 48, the second air intake duct 49, blast pipe 50 etc.Below each parts are described respectively.
As shown in Figure 4, in the present embodiment, this double-rotor machine can comprise the stator (comprising stator core 411 and coil windings), internal rotor 412 and the external rotor 413 that are positioned at shell 40.
Stator comprises the stator core 411 being connected on shell 40 and is wound on the coil windings on stator core 411, concrete, be wound with the interior winding 414 for coordinating internal rotor 412 in the inner circumferential side of stator core 411, be wound with the outer winding 415 for coordinating external rotor 413 at the outer circumferential side of stator core 411.
Wherein, the concrete structure of stator core 411 or shape, and interior winding 414 and the concrete winding method of outer winding 415 on stator core 411 all can have multiple, be not specifically limited herein, as long as can realize coordinating between interior winding 414 and internal rotor 412, interior winding 414 can be internal rotor 412 rotary power is provided, and coordinating between outer winding 415 and external rotor 413, outer winding 415 can be external rotor 413 rotary power is provided.
Wherein a kind of structure of stator core 411 can be as shown in Figure 5, this stator core 411 comprises ring-type yoke portion 4111, the outstanding multiple inner tines portion 4112 towards the inner circumferential side of ring-type yoke portion 4111, and towards the outstanding multiple outside tooth portion 4113 of the outer circumferential side of ring-type yoke portion 4111, in inner tines portion 4112, be wound with interior winding 414, in outside tooth portion 4113, be wound with outer winding 415.Wherein, inner tines portion 4112, is not specifically limited so that processing and coiling winding arrange with the concrete shape of outside tooth portion 4113 herein.Above-mentioned interior winding 414 and outer winding 415 can be completely separate, adopt respectively different circuit to control, also can adopt same ball bearing made using to control simultaneously, for example start or stop simultaneously, can also adopt other Circuits System to carry out complex control, for example, adopt the current impulse with different time interval or time starting point to control etc.
This stator core 411 can be to be combined into said structure after ring-type yoke portion 4111 processes respectively with inner tines portion 4112 and outside tooth portion 4113, also process separately ring-type yoke portion 4111, the whole tooth portion that simultaneously separately processing is made up of inner tines portion 4112 and outside tooth portion 4113, then embeds combination forming by whole tooth portion and ring-type yoke portion 4111.Stator core 411 can be to be also overrided to form by multiple planforms stator punching as shown in Figure 5.
For the ease of being connected of stator core 411 and shell 40, in the present embodiment, as shown in Fig. 6 a～6b, wherein, Fig. 6 a is the end-view of stator core 411, Fig. 6 b is the B-B cutaway view of the stator core 411 shown in Fig. 6 a, the periphery of stator core 411 can be set to step-like on the Central Symmetry direction of principal axis along stator core 411, as shown in Figure 6 b, one end diameter is larger, other end diameter is less, one end that diameter is larger is formed for the protuberance 4114 fixing with shell 40 inwalls, between the inwall of one end that diameter is less and shell 40, form one for the cavity of external rotor 413 is set, as shown in Figure 4.Stator core 411 can be connected with shell 40 by protuberance 4114, and connected mode can be that hot jacket is fixed, and also can adopt alternate manner.
This course of processing with the stator core 411 of protuberance 4114 can be in the following way, first process multiple planforms with the first external diameter stator punching and multiple stator punching with the second external diameter as shown in Figure 5, the second external diameter is greater than the first external diameter, the stator punching of the first external diameter is identical with size with the ring-type yoke portion of the stator punching of the second external diameter and the structure of inner tines portion, the second external diameter stator punching, except having the outside tooth portion identical with the first external diameter stator punching, also has radially extended protrusion end in the tooth portion of outside; Then by two kinds of stator punchings according to (or the center of circle, the ascending stack Bing Shi of outside dimension center, or inner tines portion 4112) overlap after carry out punching press, or two kinds of stator punchings with various outer diameter are superposeed respectively after punching press, two kinds of stator punchings after punching press are carried out fastening, form stator core 411 as shown in Figure 6 a, on this stator core 411, nature will form protuberance 4114 by the end of extended protrusion in the outside tooth portion at the second external diameter stator punching so.
Internal rotor 412 rotates the inner circumferential side that is configured in stator freely centered by its symmetry axis.In the present embodiment, the material of internal rotor 412 and structure can be same as the prior art, specifically also can adopt shape as shown in Figure 7.This internal rotor 412 can be also to be laminated and formed by multiple internal rotor punchings, and production technology can be identical with said stator iron core 411.
External rotor 413 can be the structure of round buss shape as shown in Figure 8, and external rotor 413 rotates the outer circumferential side that is set in stator freely centered by its symmetry axis.The material of external rotor 413 can be magnet steel etc.
Above-mentioned internal rotor 412, external rotor 413, stator can form structure (winding coil is not shown) as shown in Figure 9 after installing.Internal rotor 412 embeds the inner circumferential side of stator, and external rotor 413 is sleeved on the outer circumferential side of stator.
Internal rotor 412 connects the first transmission device as the first clutch end of double-rotor machine 41, in the present embodiment, as shown in Figure 4, what this first transmission device was concrete can be the bent axle 42 at insertion internal rotor 412 axle center places, and bent axle 42 can not relatively rotate with internal rotor 412.Internal rotor 412 drives the bent axle 42 that is connected with internal rotor 412 at first direction (for example,, as Fig. 4 in along axis direction) to the right outputting power in the time rotating.External rotor 413 connects the second transmission device as the second clutch end of double-rotor machine 41, as shown in Figure 4, this second transmission device specifically can comprise drive plate 431 and the power transmission shaft 432 fastening with drive plate 431 central axis, and one end of external rotor 413 is connected or close-fitting with drive plate 431.External rotor 413 drives the drive plate 431 and the power transmission shaft 432 that are connected with external rotor 413 in the time rotating, at second direction (for example,, as Fig. 4 in along axis direction) left outputting power.Wherein, above-mentioned first direction and second direction are contrary.
Double-rotor machine described in above embodiment is after having assembled according to said structure, and its course of work is as follows:
Inside and outside winding on stator is after powering on, internal rotor 412 is by rotating with interior winding 414 mutual inductances of stator, driving crank 42 is at first direction outputting power simultaneously, external rotor 413, by rotating with outer winding 415 mutual inductances of stator, drives drive plate 431 and power transmission shaft 432 at second direction outputting power simultaneously.Thereby realize the double dynamical output of motor twocouese.
This double-rotor machine by arranging two relatively independent coil windings on stator, act on respectively inner and outer Rotator, make internal rotor can provide the power in direction by drive transmission in the time rotating, external rotor can drive another transmission device that the power on other direction is provided in the time rotating, thereby realize the double dynamical output of twocouese, increased the output function of motor, improved the power output efficiency of motor, structure is also compacter.In the time that this double-rotor machine is applied to compressor, can reduce the use cost of this compressor, improve the reliability of equipment, and can realize many discharge capacities or there is the compressor of transfiguration function.
As shown in Figure 4, the first transmission device and the second transmission device are separate, and as mentioned above, the first transmission device is bent axle 42, and the end of this bent axle 42 is connected with the first fuel sucking pipe 46, and compressor lubricant oil is oiled to bent axle 42 by this first fuel sucking pipe 46.The end that the second transmission device comprises drive plate 431 and power transmission shaft 432, the second transmission devices is also that the end of power transmission shaft 432 is connected with the second fuel sucking pipe 47, and compressor lubricant oil is oiled to power transmission shaft 432 by this second fuel sucking pipe 47.
Continue the first compression unit and the second compression unit to be introduced below.
This first compression unit can comprise the first base bearing 441, the first cylinder 442, the first roller 443 and the first supplementary bearing 444, the first supplementary bearing 444, the first cylinder 442 are secured by bolts in the first base bearing 441 and form the first compression work chamber, and in the first compression work chamber, the first roller 443 is installed on the right-hand member of bent axle 42.
The second compression unit can be identical or similar with the structure of the first compression unit.The second compression unit can comprise the second base bearing 451, the second cylinder 452, the second roller 453 and the second supplementary bearing 454, the second supplementary bearing 454, the second cylinder 452 are secured by bolts in the second base bearing 451 and form the second compression work chamber, and in the second compression work chamber, the second roller 453 is installed on the left end of power transmission shaft 432.
Again as shown in Figure 4, the first compression unit with connect for the first air intake duct 48 that is connected the first knockout, the first compression work chamber that the cold-producing medium in the first knockout enters in the first compression unit by the first air intake duct 48 is compressed.The second compression unit with connect for the second air intake duct 49 that is connected the second knockout, the second compression work chamber that the cold-producing medium in the second knockout enters in the second compression unit by the second air intake duct 49 is compressed.Wherein, the first knockout and the second knockout can be same knockouts, can be also two knockouts.Cold-producing medium in cold-producing medium after the first compression unit compression and the second compression unit after compression is finally discharged by blast pipe 50.
The course of work of above horizontal compressor is: after double-rotor machine powers on, internal rotor 412 is by rotating with interior winding 414 mutual inductances of stator, internal rotor 412 driving cranks 42 rotate, and bent axle 42 drives the first roller 443 to compress the cold-producing medium entering in the first compression work chamber by the first air intake duct 48; External rotor 413 is by rotating with outer winding 415 mutual inductances of stator, external rotor 413 drives drive plate 431 and power transmission shaft 432 to rotate, power transmission shaft 432 drives the second roller 453 to compress the cold-producing medium entering in the second compression work chamber by the second air intake duct 49, finally, in the first compression work chamber, in the cold-producing medium after compression and the second compression work chamber, the cold-producing medium after compression is discharged compressor by blast pipe 50.
Because interior winding and outer winding can independently be controlled, therefore, can switch at the same time or separately or successively by winding in controlling and outer winding, realize the first compression unit and the second compression unit and operate at the same time or separately or successively, can also be by controlling the pulse current size on interior winding and outer winding and pulse interval is controlled the first compression unit and the second compression unit is discharged the compressed fluid of identical or different pressure, thus realize many discharge capacities or there is the compressor of transfiguration function.
In above embodiment, the shape of each parts and structure are only example, and non-limiting.And above each parts can also be replaced respectively with the element that other has identical function, to be combined to form more technical scheme, and these technical schemes of replacing rear formation all should be within the scope of technical solutions of the utility model protection.
Above-mentioned compressor can be widely used in the fields such as air-conditioning unit, air cleaning system, cooling device and exhaust equipment.
The above, be only preferred embodiment of the present utility model, not the utility model done to any pro forma restriction.
Although the utility model discloses as above with preferred embodiment, but not in order to limit the utility model.Any those of ordinary skill in the art, do not departing from technical solutions of the utility model scope situation, all can utilize method and the technology contents of above-mentioned announcement to make many possible variations and modification to technical solutions of the utility model, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solutions of the utility model,, all still belongs in the scope of technical solutions of the utility model protection any simple modification made for any of the above embodiments, equivalent variations and modification according to technical spirit of the present utility model.
Claims (9)
1. a horizontal compressor, is characterized in that, comprises shell, and is positioned at double-rotor machine, the first transmission device, the second transmission device, the first compression unit and second compression unit of described shell; The two ends symmetry of described double-rotor machine be provided with described the first compression unit and described the second compression unit, the first clutch end of described double-rotor machine connects described the first transmission device, and by the first compression unit described in described the first actuator drives, the second clutch end of described double-rotor machine connects described the second transmission device, and by the second compression unit described in described the second actuator drives.
2. horizontal compressor according to claim 1, it is characterized in that, described double-rotor machine comprises the internal rotor that is positioned at described shell, external rotor and stator, described stator comprises stator core and is wound on interior winding and the outer winding on described stator core, described stator core comprises ring-type yoke portion, the outstanding multiple inner tines portion towards the inner circumferential side of described ring-type yoke portion, and towards the outstanding multiple outside tooth portion of the outer circumferential side of described ring-type yoke portion, in described inner tines portion, be wound with the described interior winding for coordinating described internal rotor, in the tooth portion of described outside, be wound with the described outer winding for coordinating described external rotor, described internal rotor rotates the inner circumferential side that is configured in described stator freely, and described external rotor is the cylindric rotation outer circumferential side that is set in described stator freely, described internal rotor is connected with described the first transmission device as described the first clutch end, and described external rotor is connected with described the second transmission device as described the second clutch end.
3. horizontal compressor according to claim 2, is characterized in that, described interior winding and described outer winding are separate, adopt respectively different circuit to control.
4. horizontal compressor according to claim 2, it is characterized in that, the periphery of described stator core is step-like on the central axis direction along described stator core, one end diameter is larger, other end diameter is less, one end that diameter is larger is formed for the protuberance fixing with described outer casing inner wall, is formed for arranging the cavity of described external rotor between one end that diameter is less and the inwall of described shell.
5. horizontal compressor according to claim 4, is characterized in that, described stator core is fixed by described protuberance and described shell hot jacket.
6. horizontal compressor according to claim 4, it is characterized in that, described stator core is laminated and is formed by multiple stator punchings with the first external diameter and multiple stator punching with the second external diameter, described protuberance is laminated and is formed by described multiple stator punchings with the second external diameter, wherein, described the second external diameter is greater than described the first external diameter.
7. horizontal compressor according to claim 2, is characterized in that, the material of described external rotor is magnet steel.
8. according to the horizontal compressor described in any one in claim 1 to 7, it is characterized in that, described the first compression unit with connect for the first air intake duct that is connected the first knockout, described the second compression unit and the second air intake duct connection for being connected the second knockout.
9. according to the horizontal compressor described in any one in claim 1 to 7, it is characterized in that, the end of described the first transmission device is connected with the first fuel sucking pipe, and the end of described the second transmission device is connected with the second fuel sucking pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111325.2U CN203883640U (en) | 2014-03-12 | 2014-03-12 | Horizontal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111325.2U CN203883640U (en) | 2014-03-12 | 2014-03-12 | Horizontal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203883640U true CN203883640U (en) | 2014-10-15 |
Family
ID=51684105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420111325.2U Withdrawn - After Issue CN203883640U (en) | 2014-03-12 | 2014-03-12 | Horizontal compressor |
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| Country | Link |
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| CN (1) | CN203883640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904848A (en) * | 2014-03-12 | 2014-07-02 | 珠海凌达压缩机有限公司 | Horizontal type compressor |
-
2014
- 2014-03-12 CN CN201420111325.2U patent/CN203883640U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904848A (en) * | 2014-03-12 | 2014-07-02 | 珠海凌达压缩机有限公司 | Horizontal type compressor |
| CN103904848B (en) * | 2014-03-12 | 2016-09-21 | 珠海凌达压缩机有限公司 | A kind of horizontal compressor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141015 Effective date of abandoning: 20160921 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |