CN212227474U - Electronic fresh-keeping device for refrigeration house - Google Patents
Electronic fresh-keeping device for refrigeration house Download PDFInfo
- Publication number
- CN212227474U CN212227474U CN202021956935.4U CN202021956935U CN212227474U CN 212227474 U CN212227474 U CN 212227474U CN 202021956935 U CN202021956935 U CN 202021956935U CN 212227474 U CN212227474 U CN 212227474U
- Authority
- CN
- China
- Prior art keywords
- circuit
- connecting pipe
- power supply
- electromagnet
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model discloses an electron device that keeps fresh for freezer, including refrigerating plant, refrigerating plant passes through the main line and is connected with main power supply and auxiliary power supply, the main line is connected with second circuit and first circuit through multidirectional wiring mechanism, first circuit both ends are connected with multidirectional wiring mechanism and main power supply, the second circuit both ends are connected with multidirectional wiring mechanism and auxiliary power supply, be provided with power adjusting device on first circuit and the second circuit, power adjusting device includes the connecting pipe, electro-magnet and magnetic fluid, the electro-magnet is connected with first circuit on-line electricity, connecting block fixed connection is passed through with first circuit and second circuit to the connecting pipe, the magnetic fluid sets up inside the connecting pipe, and occupies the inside space that is less than half of connecting pipe, electro-magnet bottom fixedly connected with extension branch. The utility model discloses guarantee that the article in the freezer can not take place rotten because of the outage, protected the cold-stored article and the economic property of the people of cold-stored article in the freezer.
Description
Technical Field
The utility model belongs to the technical field of the freezer is fresh-keeping device, especially, relate to an electronic fresh-keeping device for freezer.
Background
The food and the plants such as the fresh flowers leaving the cultivation soil cannot be stored in the air for a long time, for example, the vegetable and the fresh flowers are easy to wither after being stored in the environment for a long time, the meat and egg food is easy to deteriorate after being stored for a long time, and the fresh flowers are easy to wither. The fruits and vegetables which are placed for a long time can not be treated and eaten again, which causes great waste and economic loss.
Therefore, people think of performing fresh-keeping treatment on the objects needing to be stored, and all the objects need to be stored in a cold storage when the storage capacity is large. The cold storage is one of the best modes for storing products which are easily influenced by the environmental temperature at present, and most of the mechanical cold storage in China mainly adopts a steam compression type refrigeration mode to adjust the temperature of the cold storage at present. The mechanical refrigerator is simply a refrigerator that performs cooling by a mechanical method. The refrigeration principle can be briefly described as follows: the evaporation of the liquid refrigerant with lower vaporization temperature is utilized to absorb the heat in the storage environment, thereby reducing the temperature of the storage. The vaporized refrigerant is sucked back and pressurized by the compressor, the refrigerant transfers the absorbed heat to the cooling medium in the condenser, so that the temperature of the refrigerant is reduced and the refrigerant is condensed into liquid, and then the evaporation and the heat absorption are carried out, and the continuous refrigeration can be realized by the circulation.
However, when power failure occurs, the refrigerator loses power input, the refrigerating device cannot refrigerate, the temperature in the refrigerator rises due to long-time incapability of refrigerating, the articles stored in the refrigerator begin to recover to the room temperature, and the articles originally stored in the refrigerator are easy to deteriorate due to moisture generated by thawing. Power outages can cause substantial damage to and deterioration of refrigerated items, resulting in direct economic and other indirect losses to people of refrigerated items.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defect that refrigeration cannot be carried out after power failure, and providing an electronic fresh-keeping device for a refrigeration house.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an electronic fresh-keeping device for a refrigeration house comprises a refrigerating device, wherein the refrigerating device is connected with a main power supply and an auxiliary power supply through a main circuit, the main circuit is connected with a second circuit and a first circuit through a multidirectional wiring mechanism, two ends of the first circuit are respectively connected with the multidirectional wiring mechanism and the main power supply, two ends of the second circuit are respectively connected with the multidirectional wiring mechanism and the auxiliary power supply, a power supply adjusting device is arranged on the first circuit and the second circuit, the power supply adjusting device comprises a connecting pipe, an electromagnet and a magnetic fluid, the electromagnet is electrically connected with the first circuit and is arranged right above the connecting pipe, the electromagnet and the main power supply can form a closed circuit, the connecting pipe is fixedly connected with the first circuit and the second circuit through a connecting block, the magnetic fluid is arranged in the connecting pipe and occupies less than half of the space in the connecting pipe, the bottom of the electromagnet is fixedly connected with an extension branch which is arranged in the connecting pipe.
Preferably, the main power supply is an external power supply, the sub power supply is an electric power storage supply, and a charging port may be provided at one end.
Preferably, multidirectional wiring mechanism includes shell, clamp plate and conducting block, main line, first circuit and second circuit centre gripping respectively in three clamp plate, three all fixed connection of clamp plate is on same conducting block.
Preferably, the connecting pipe is triangular, the bottom edge of the triangular connecting pipe is hollow, and the cutting angle of the triangular hollow formed at the bottom edge of the connecting pipe is 30-45 degrees.
Preferably, the connecting pipe body is made of an insulating material, and a heat insulation layer is sleeved outside the pipe body.
Preferably, the shape of the electromagnet is a strip shape, and the distance between one end of the electromagnet with a magnetic pole and the connecting pipe is 2-3 cm.
Preferably, one end of the extension branch is fixedly connected to the electromagnet, the other end of the extension branch is in a multi-branch shape, and when the electromagnet attracts all the magnetic fluid, the bottom of the extension branch penetrates through the lower liquid level of the magnetic fluid.
Preferably, the connecting block is arranged on the connecting pipe in a vertically symmetrical manner and is made of a conductive material, and the connecting block is fixedly connected with the first line and the second line.
Preferably, the main power supply and the secondary power supply are connected through a connecting line, and one end of the connecting line is connected with a charging port of the secondary power supply.
Preferably, the area of the bottom of the electromagnet is larger than that of the upper part of the connecting pipe, and the projection of the electromagnet in the vertical direction covers the projection of the connecting pipe in the vertical direction.
Compared with the prior art, the beneficial effects of the utility model are that:
when the main power supply is powered on, the electric power in the first circuit is normally transmitted, the electromagnet connected with one separated live wire in the first circuit generates magnetic force due to the electric power, the electromagnet performs magnetic attraction on the magnetic fluid in the connecting pipe to attract the magnetic fluid to the top of the connecting pipe, the magnetic fluid on the top is communicated with the first circuit and the main circuit, so that the electric power in the main power supply can be transmitted to the refrigerating device to perform refrigerating treatment on the refrigeration house, when the main power supply is powered off, the first circuit loses electric power, the electromagnet is not electrified any more, and the magnetism is lost, and under the condition that the magnetic fluid in the power supply adjusting device loses the magnetic attraction, the second circuit is connected due to the action of self gravity, the auxiliary power supply starts to transmit electric power to the refrigerating device, so that the refrigerating device can continue refrigerating. After the main power supply is powered off, the power supply is switched to the auxiliary power supply in time, so that the refrigerating device continues to work, articles in the cold storage are continuously frozen and fresh-kept after the power off, and the conditions that the articles in the cold storage are deteriorated, the quality is reduced and the articles cannot be used due to the power off are ensured. The refrigerated goods of the freezer owner are protected, and economic loss and some possible indirect loss of the owner are avoided.
Drawings
Fig. 1 is a schematic structural view of an electronic fresh-keeping device for a freezer according to the present invention;
fig. 2 is a schematic view of a connecting pipe of the electronic fresh-keeping device for the refrigeration storage provided by the utility model;
FIG. 3 is an enlarged view of the structure at A in FIG. 1;
fig. 4 is an enlarged view of the structure at B in fig. 1.
In the figure: the device comprises a refrigerating device 1, a main circuit 2, a first circuit 3, a second circuit 4, a main power supply 5, an auxiliary power supply 6, a 7-way wiring mechanism, a wiring clamp 71, a conductive block 72, a power supply adjusting device 8, a connecting pipe 81, a connecting block 82, an electromagnet 83, a magnetic fluid 84, an extension branch 9 and a connecting line 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-4, an electronic fresh-keeping device for a refrigerator comprises a refrigerating device 1, the refrigerating device 1 ensures the temperature maintenance in the refrigerator and plays a role of keeping fresh for various articles in the refrigerator, the refrigerating device 1 is connected with a main power supply 5 and an auxiliary power supply 6 through a main circuit 2, the main circuit 2 is connected with a second circuit 4 and a first circuit 3 through a multidirectional wiring mechanism 7, the multidirectional wiring mechanism 7 ensures that the first circuit 3 and the second circuit 4 can output power from the main circuit 2, two ends of the first circuit 3 are respectively connected with the multidirectional wiring mechanism 7 and the main power supply 5, two ends of the second circuit 4 are respectively connected with the multidirectional wiring mechanism 7 and the auxiliary power supply 6, a power supply adjusting device 8 is arranged on the first circuit 3 and the second circuit 4, the power adjusting device fixes the first circuit 3 and the second circuit 4 together, the fresh-keeping device is switched and adjusted under different conditions of power on and power off, the power supply adjusting device 8 comprises a connecting pipe 81, an electromagnet 83 and a magnetic fluid 84, wherein the electromagnet 83 is electrically connected with the first circuit 3 and is arranged right above the connecting pipe 81, the electromagnet 83 can form a closed circuit with the main power supply 5, the electromagnet 83 is connected with a live wire and a zero wire in the first circuit 3 to ensure that the electromagnet 83 and the main power supply 5 can be electrically connected, then magnetic force is generated to attract the magnetic fluid 84 by magnetic force, the connecting pipe 81 is fixedly connected with the first circuit 3 and the second circuit 4 through a connecting block 82, the magnetic fluid 84 is arranged in the connecting pipe 81 and occupies less than half of the space in the connecting pipe 81, the amount of the magnetic fluid 84 is set to ensure that only one of the first circuit 3 and the second circuit 4 can be electrically connected at the same time to ensure the normal work of the device, an extension branch 9 is fixedly connected to the bottom of the electromagnet 83, and the extension branch 9 is, the extension branch 9 is used for enhancing the adsorption effect on the magnetic fluid 84 and preventing the magnetic fluid 84 from sliding off, so that the first line 3 and the second line 4 are electrified, and the device cannot work normally.
In the embodiment applying the above technical scheme, when the main power supply 5 is powered, the power transmission in the first line 3 is normal, the electromagnet 83 connected with one separated live wire in the first line 3 generates magnetic force due to the power action, the electromagnet 83 performs magnetic attraction on the magnetic fluid 84 inside the connecting pipe 81, attracts the magnetic fluid 84 to the top of the connecting pipe 81, and the magnetic fluid 84 at the top communicates with the first line 3 and the main line 2, so that the power in the main power supply 5 can be transmitted to the refrigerating device 1 to perform refrigerating treatment on the refrigeration house. When the main power supply 5 is powered off, the electromagnet 83 loses power, the electromagnet 83 cannot generate magnetic force, and the magnetic fluid 84 inside the connecting pipe 81 does not have enough magnetic force to resist the gravity of the magnetic fluid 84, so the magnetic fluid 84 slides to the bottom end of the connecting pipe 81 under the action of the gravity of the magnetic fluid 84, the second line 4 is communicated under the action of the magnetic fluid 84, the power stored in the secondary power supply 6 is transmitted to the main line 2 through the second line 4, the normal work of the refrigerating device 1 is ensured, and the temperature of the refrigeration house is ensured not to be obviously changed. The utility model discloses ensured that the freezer can normally work under the condition of outage, guaranteed that the article in the freezer can not take place rotten because of the outage, protected the cold-stored article and the economic property of the people of cold-stored article in the freezer.
In the preferred technical scheme of the embodiment, the main power supply 5 is an external power supply, the secondary power supply 6 is an electric power storage supply, and a charging port can be arranged at one end of the secondary power supply 6, the main power supply 5 is used for normally using electricity for the refrigeration device 1, the secondary power supply 6 is used for transmitting electricity to the refrigeration device 1 when the main power supply 5 is powered off, and the main power supply 5 and the secondary power supply 6 are selected through the power supply adjusting device 8;
the multidirectional wiring mechanism 7 comprises a shell, wiring clamps 71 and conductive blocks 72, wherein the main line 2, the first line 3 and the second line 4 are respectively clamped in the three wiring clamps 71, the three wiring clamps 71 are fixedly connected to the same conductive block 72, the first line 3, the second line 4 and the main line 2 are connected to the same conductive block 72, and when the first line 3 cannot transmit electric power, the second line 4 transmits the electric power to the main line 2;
the connecting pipe 81 is triangular, the bottom edge of the triangular connecting pipe 81 is hollow, the cutting angle of the triangular hollow formed in the bottom edge of the connecting pipe 81 is 30-45 degrees, the hollow arrangement can provide an upward force when the magnetic fluid 84 is completely positioned at the upper part of the connecting pipe 81, the magnetic fluid 84 is prevented from falling due to insufficient magnetic force, the auxiliary power supply 6 is prevented from being started, and the device partially runs normally;
the pipe body of the connecting pipe 81 is made of insulating materials, a heat insulation layer is sleeved outside the pipe body, a shell made of an insulator can prevent the whole connecting pipe 81 from being electrified when power is electrified, and finally the connecting pipe 81 is damaged at high temperature and cannot be used by the whole power supply adjusting device 8;
the shape of the electromagnet 83 is set to be strip-shaped, the distance between one end of the electromagnet 83 with a magnetic pole and the connecting pipe 81 is 2-3cm, the distance between the electromagnet 83 and the connecting pipe 81 is controlled, so that the electromagnet 83 can generate effective magnetic attraction to the magnetic fluid 84, the power supply adjusting device 8 can work flexibly, when the distance is not controlled well, the magnetic fluid 84 cannot be completely adsorbed, the magnetic fluid 84 also exists on the lower half part of the connecting pipe 81, due to the effect of the residual magnetic fluid 84, the second line 4 is communicated, the first line 3 and the second line 4 are connected in parallel, and the whole device cannot run normally;
one end of the extension branch 9 is fixedly connected to the electromagnet 83, the other end of the extension branch is in a multi-branch shape, when the electromagnet 83 attracts all the magnetic fluid 84, the bottom of the extension branch 9 penetrates through the lower liquid surface of the magnetic fluid 84, the extension branch 9 is arranged to strengthen the magnetic force adsorption effect on the magnetic fluid 84, when the magnetic fluid 84 is not strongly adsorbed, the magnetic fluid 84 is possibly incompletely attracted, one part of the magnetic fluid 84 is arranged at the lower half part of the connecting pipe 81, due to the effect of the magnetic fluid 84, the second line 4 is communicated, the first line 3 and the second line 4 are connected in parallel, and the device cannot work;
the connecting blocks 82 are arranged on the connecting pipe 81 in an up-down symmetrical mode and made of conductive materials, the connecting blocks 82 are fixedly connected with the first line 3 and the second line 4, the connecting blocks 82 are actually connected with live wires in the first line 3 and the second line 4, and the arrangement of the connecting blocks 82 ensures that the first line 3 and the second line 4 are in perfect butt joint with the magnetic fluid 84, so that the whole current transmission is continuous, and the device can work normally;
the main power supply 5 is connected with the secondary power supply 6 through the connecting line 10, one end of the connecting line 10 is connected with a charging port of the secondary power supply 6, when the main power supply 5 is powered on, the main power supply 5 charges the secondary power supply 6, the secondary power supply 6 is ensured to have enough electric power to support the refrigerating device 1 for refrigeration when the main power supply 5 is powered off, the condition that the secondary power supply 6 cannot deliver electric power when the power is off due to forgetting to charge the secondary power supply 6 is avoided, and the secondary power supply 6 is ensured to be in a state of sufficient electric power all the time;
the area of the bottom of the electromagnet 83 is larger than the area of the upper part of the connecting pipe 81, the projection of the electromagnet 83 in the vertical direction covers the projection of the connecting pipe 81 in the vertical direction, when the section of the electromagnet 83 arranged on the small connecting pipe 81 is smaller than the section of the electromagnet 83 arranged on the small connecting pipe 81, the electromagnet cannot generate strong enough magnetic force to adsorb the magnetic fluid 84, so that part of the magnetic fluid 84 does not have enough magnetic force to overcome the gravity, the magnetic fluid reaches the top of the pipe from the bottom of the connecting pipe 81 to be connected with the first line 3, the area of the bottom of the electromagnet 83 is larger than the area of the upper part of the.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides an electronic fresh-keeping device for freezer, includes refrigerating plant (1), its characterized in that, refrigerating plant (1) is connected with main power source (5) and auxiliary power source (6) through main line (2), main line (2) are connected with second circuit (4) and first circuit (3) through multidirectional wiring mechanism (7), first circuit (3) both ends are connected with multidirectional wiring mechanism (7) and main power source (5) respectively, second circuit (4) both ends are connected with multidirectional wiring mechanism (7) and auxiliary power source (6) respectively, be provided with power adjusting device (8) on first circuit (3) and second circuit (4), power adjusting device (8) include connecting pipe (81), electro-magnet (83) and magnetic current body (84), electro-magnet (83) are connected with first circuit (3) circular telegram, and set up directly over connecting pipe (81), electromagnet (83) can form closed circuit with main power supply (5), connecting pipe (81) and first circuit (3) and second circuit (4) pass through connecting block (82) fixed connection, magnetic current body (84) set up inside connecting pipe (81), and occupy the inside space that is less than half of connecting pipe (81), electromagnet (83) bottom fixedly connected with extension branch (9), install inside connecting pipe (81) extension branch (9).
2. The electronic fresh-keeping device for the refrigerator according to claim 1, wherein the main power source (5) is an external power source, the auxiliary power source (6) is an electric power storage source, and a charging port may be provided at one end.
3. The electronic fresh-keeping device for the refrigeration house according to claim 1, characterized in that the multidirectional wiring mechanism (7) comprises a housing, a clamping plate (71) and a conductive block (72), the main line (2), the first line (3) and the second line (4) are respectively clamped in the three clamping plates (71), and the three clamping plates (71) are all fixedly connected on the same conductive block (72).
4. The electronic fresh-keeping device for the refrigeration house according to claim 1, characterized in that the connecting pipe (81) is triangular, the bottom side of the triangular connecting pipe (81) is provided with a triangular hollow, and the cutting angle of the triangular hollow formed at the bottom side of the connecting pipe (81) is 30-45 degrees.
5. The electronic fresh-keeping device for the refrigerator according to claim 1, wherein the pipe body of the connecting pipe (81) is made of an insulating material, and a heat insulating layer is sleeved outside the pipe body.
6. The electronic fresh-keeping device for the refrigerator according to claim 1, wherein the electromagnet (83) is shaped as a bar, and the distance from the end of the electromagnet (83) having the magnetic pole to the connecting pipe (81) is 2-3 cm.
7. The electronic fresh-keeping device for the refrigeration house according to claim 1, characterized in that one end of the extension branch (9) is fixedly connected to the electromagnet (83), the other end is arranged in a multi-branch shape, and when the electromagnet (83) attracts all the magnetic fluid (84), the bottom of the extension branch (9) penetrates through the lower liquid level of the magnetic fluid (84).
8. The electronic fresh-keeping device for the refrigerator according to claim 1, wherein the connecting blocks (82) are vertically symmetrically arranged on the connecting pipe (81) and made of a conductive material, and the connecting blocks (82) are fixedly connected with the first line (3) and the second line (4).
9. The electronic fresh-keeping device for the refrigerator according to claim 1, wherein the main power supply (5) is connected with the secondary power supply (6) through a connecting line (10), and one end of the connecting line (10) is connected with a charging port of the secondary power supply (6).
10. The electronic fresh-keeping device for the refrigerator according to claim 1, wherein the area of the bottom of the electromagnet (83) is larger than the area of the upper part of the connecting pipe (81), and the projection of the electromagnet (83) in the vertical direction covers the projection of the connecting pipe (81) in the vertical direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202021956935.4U CN212227474U (en) | 2020-09-09 | 2020-09-09 | Electronic fresh-keeping device for refrigeration house |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202021956935.4U CN212227474U (en) | 2020-09-09 | 2020-09-09 | Electronic fresh-keeping device for refrigeration house |
Publications (1)
Publication Number | Publication Date |
---|---|
CN212227474U true CN212227474U (en) | 2020-12-25 |
Family
ID=73910571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202021956935.4U Active CN212227474U (en) | 2020-09-09 | 2020-09-09 | Electronic fresh-keeping device for refrigeration house |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN212227474U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111928561A (en) * | 2020-09-09 | 2020-11-13 | 江永雄 | Electronic fresh-keeping device for refrigeration house |
-
2020
- 2020-09-09 CN CN202021956935.4U patent/CN212227474U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111928561A (en) * | 2020-09-09 | 2020-11-13 | 江永雄 | Electronic fresh-keeping device for refrigeration house |
CN111928561B (en) * | 2020-09-09 | 2022-11-25 | 江永雄 | Electronic fresh-keeping device for refrigeration house |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN205169314U (en) | Bright cold chain of on -vehicle life delivery case and electronic delivery car | |
CN212227474U (en) | Electronic fresh-keeping device for refrigeration house | |
KR101782031B1 (en) | Device and method for electric-field treatment of food, transportaion | |
CN110074310A (en) | A kind of magnetic field freeze preservation device | |
CN111578595A (en) | Super-ice-temperature refrigerator and food fresh-keeping method | |
CN208419329U (en) | A kind of space static electricity is fresh-keeping-refrigerator that thaws | |
CN111928561B (en) | Electronic fresh-keeping device for refrigeration house | |
CN206284309U (en) | A kind of food preservative technology equipment | |
CN103727738B (en) | Ion preservation refrigerator | |
CN208377532U (en) | Frozen products insulated container | |
CN108870829A (en) | A kind of freeze preservation device and control method | |
CN209263451U (en) | Cold holding refrigeration-type freezer | |
CN204880925U (en) | Portable solar energy freezer | |
CN209744808U (en) | Freeze-drying refrigerator | |
CN203798060U (en) | Solar supply type electrical refrigeration device | |
CN206238243U (en) | A kind of auxiliary preservation device for not freezing fishing product | |
CN204902356U (en) | Quick -freeze and fast board that unfreezes | |
CN211903430U (en) | Supercritical constant ice temperature fresh-keeping device | |
JP6412159B2 (en) | Low temperature storage equipment with disinfection and freshness keeping functions | |
CN1289885C (en) | Heating defreezer for air conditioner and refrigerator | |
CN220577964U (en) | Storage device of plateau food | |
CN210226754U (en) | Tilapia water-retaining color-protecting mechanism | |
CN104949425B (en) | Solar energy is for the electric refrigerating plant of formula and its control method | |
CN218065538U (en) | Quick-freezing cabinet capable of reducing cold air loss | |
CN213931639U (en) | Meat refrigerating plant |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |