CN210718122U - Water-blocking and heat-stopping device for water heater - Google Patents
Water-blocking and heat-stopping device for water heater Download PDFInfo
- Publication number
- CN210718122U CN210718122U CN201921619692.2U CN201921619692U CN210718122U CN 210718122 U CN210718122 U CN 210718122U CN 201921619692 U CN201921619692 U CN 201921619692U CN 210718122 U CN210718122 U CN 210718122U
- Authority
- CN
- China
- Prior art keywords
- water
- cavity
- heating
- pressure
- shell
- 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
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model discloses a water heater water shutoff and heat retaining device belongs to the domestic appliance field, and water heater water shutoff and heat retaining device, which comprises a housin, heating pipe and outlet pipe, the heating pipe is established in the casing, and the delivery port and the outlet pipe of casing are linked together, are equipped with water pressure regulation and control heating element on the casing, have seted up the pressure chamber in the casing respectively, steady voltage chamber and heating chamber, and the pressure chamber is linked together with the heating chamber, and the heating chamber is linked together with steady voltage chamber, and pressure chamber and steady voltage chamber contact with water pressure regulation and control heating element's rubber end respectively, and water pressure regulation and control heating element's switch. The utility model discloses a water heater stifled water heat stopping device adopts the cavity structure of water pressure regulation and control heating element cooperation water heater, when the water outlet end receives stifled back, can the automatic shutdown heating, and is safer and energy-conserving more, need not the manual work and closes heating device, and it is more convenient to use.
Description
Technical Field
The utility model relates to the field of household appliances, especially, relate to a water heater stifled water heat stopping device.
Background
The water heater is a device which can increase the temperature of cold water into hot water in a certain time by various physical principles. According to different principles, the water heater can be divided into an electric water heater, a gas water heater, a solar water heater, a magnetic water heater, an air energy water heater, a heating water heater and the like. Wherein, in order to make the water heater more safe and reliable in the use, need carry out the safety protection design to its heating device.
After the water heater is used for a long time, the water outlet end of the water heater is easily blocked by water scales or other foreign matters, water flow can be accumulated in the cavity of the water heater until the cavity is filled, so that the water flow is in a static state, at the moment, the heating device in the water heater can continuously heat the static water flow in the cavity, the potential safety hazard caused by overhigh temperature of the water flow is caused, and energy is wasted. However, after the water outlet end of the existing water heater is blocked, the heating device cannot be automatically turned off, so that potential safety hazards and energy waste are easily caused, a user needs to turn off the heating device of the water heater in time to avoid safety risks, and the water heater is inconvenient to use.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to solve the technical problem of providing a water heater water shutoff and heat stopping device, adopt the cavity structure of water pressure regulation and control heating element cooperation water heater, when the water outlet end receives stifled back, can the automatic shutdown heating, safer and energy-conserving, need not the manual work and close heating device, it is more convenient to use.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a pair of water heater stagnant water heat device that blocks up, including casing, heating pipe and outlet pipe, the heating pipe is established in the casing, and the delivery port and the outlet pipe of casing are linked together, are equipped with water pressure regulation and control heating element on the casing, have seted up pressure chamber, steady voltage chamber and heating chamber in the casing respectively, and the pressure chamber is linked together with the heating chamber, and the heating chamber is linked together with steady voltage chamber, and pressure chamber and steady voltage chamber contact with water pressure regulation and control heating element's rubber end respectively, and water pressure regulation and control heating element's switch end and heating pipe electric connection.
The utility model discloses preferred technical scheme lies in, water pressure regulation and control heating element includes rubber spare, the wane, micro-gap switch and support frame, the one end of wane inlays to be established in rubber spare, the other end of wane and micro-gap switch's button end looks adaptation, and the wane can make the activity in the support frame, micro-gap switch and heating pipe electric connection, micro-gap switch inlays to be established in the support frame, the support frame is fixed on the outer wall of casing, the left end of rubber spare is fixed at the outer wall of casing, and the left end and the support frame looks butt of rubber spare, the right-hand member joint of rubber spare is at the inner wall of casing, the upper end and the steady voltage chamber of rubber spare contact, the lower extreme and the pressure chamber.
The utility model discloses preferred technical scheme lies in, and the wane configuration is the dog-ear wane, and the hem end of dog-ear wane inlays and establishes in the rubber spare, and another hem end of dog-ear wane and micro-gap switch's button end looks adaptation, and the dog-ear wane can be done the activity in the support frame.
The utility model discloses preferred technical scheme lies in, has seted up movable chamber in the support frame, and micro-gap switch fixes in the movable chamber, and the seesaw can be done the activity in the movable chamber.
The utility model discloses preferred technical scheme lies in, has seted up casing water inlet and casing delivery port on the outer wall of casing respectively, and the casing water inlet is linked together through inlet channel and pressure chamber, and the outlet pipe passes the casing delivery port and is linked together with the heating chamber.
The utility model discloses preferred technical scheme lies in, and the end of intaking of casing water inlet is equipped with pressure relief device.
The utility model discloses preferred technical scheme lies in, and the outer wall of casing is fixed with the temperature controller, the temperature measuring end and the heating pipe looks adaptation of temperature controller.
The utility model discloses preferred technical scheme lies in, is fixed with a plurality of connecting pieces on the casing.
The utility model discloses preferred technical scheme lies in, and the pressure chamber water inlet has been seted up to the end of intaking of pressure chamber, and the pressure chamber delivery port has been seted up to the play water end of pressure chamber, and the aperture of pressure chamber water inlet is greater than the aperture of pressure chamber delivery port, and the inlet channel is linked together with the pressure chamber water inlet, and the heating chamber is linked together with the pressure chamber delivery port.
The utility model discloses preferred technical scheme lies in, and the internal thread has been seted up to outlet pipe and casing delivery port threaded connection on the pore wall of casing delivery port, has seted up the external screw thread on the outer wall of outlet pipe, internal thread and external screw thread looks adaptation.
The utility model has the advantages that:
the utility model provides a water heater water shutoff ends heat facility, when water heater water shutoff ends heat facility's delivery port blockked up, rivers accumulate in the cavity of casing, and final rivers stop flowing. At the moment, the static pressure of the water flow in the cavity of the shell is the same, the water pressures at the two ends of the rubber end of the water pressure regulating and heating assembly are the same and keep balance, and then the switch end of the water pressure regulating and heating assembly is reset to close the heating pipe, so that the heating pipe stops heating. Through the process, when the water outlet end of the water plugging and heat stopping device of the water heater is blocked, the heating can be automatically stopped, the potential safety hazard problem caused by overheating of the cavity water temperature due to continuous heating after the water outlet end is blocked is prevented, the device is safer, meanwhile, unnecessary energy loss is reduced, and the device is more energy-saving. When the water outlet end is blocked, the heating can be automatically stopped, the heating device does not need to be manually closed, and the use is more convenient.
Drawings
FIG. 1 is a sectional view of the overall structure of a water shutoff and heat-stopping device for a water heater according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the water shutoff and heat-stopping device of the water heater in the portion A of FIG. 1;
fig. 3 is an enlarged schematic structural view of the water shutoff and heat-stopping device of the water heater in the part B of fig. 1.
In the figure:
1. a housing; 11. a pressure chamber; 111. a pressure chamber water inlet; 112. a pressure cavity water outlet; 12. a voltage stabilizing cavity; 13. a heating cavity; 14. a housing water inlet; 15. a shell water outlet; 151. an internal thread; 16. a water inlet pipe; 2. heating a tube; 3. a water outlet pipe; 31. an external thread; 4. a water pressure regulating and heating component; 41. a rubber member; 42. a seesaw; 43. a microswitch; 44. a support frame; 441. a movable cavity; 5. a pressure relief device; 6. a temperature controller; 7. a connecting member.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 3, the water shutoff and heat-stopping device for a water heater provided in this embodiment includes a housing 1, a heating pipe 2 and a water outlet pipe 3, the heating pipe 2 is disposed in the housing 1, a water outlet of the housing 1 is communicated with the water outlet pipe 3, the housing 1 is provided with a water pressure regulation and heating assembly 4, the housing 1 is respectively provided with a pressure chamber 11, a pressure stabilization chamber 12 and a heating chamber 13, the pressure chamber 11 is communicated with the heating chamber 13, the heating chamber 13 is communicated with the pressure stabilization chamber 12, the pressure chamber 11 and the pressure stabilization chamber 12 are respectively contacted with a rubber end of the water pressure regulation and heating assembly 4, a switch end of the water pressure regulation and heating assembly 4 is electrically connected with the heating. When the water outlet end of the water heater water-blocking and heat-stopping device is blocked, the heating can be automatically stopped, so that the water heater water-blocking and heat-stopping device is safer and more energy-saving and is more convenient to use. Furthermore, water flows through the pressure cavity 11, the heating cavity 13 and the pressure stabilizing cavity 12 in sequence and is discharged through the water outlet pipe 3, and the heating pipe 2 can heat the water flow in the heating cavity 13. The first state: when the water outlet of the water heater water blocking and heat stopping device is not blocked, and water flow is in a normal water outlet flowing state, the water pressure is gradually reduced along the water flow flowing direction under the condition of no other external force, the water pressure in the pressure cavity 11 is greater than the water pressure in the pressure stabilizing cavity 12, the water pressures at the two ends of the rubber end of the water pressure regulating and heating assembly 4 are different and are pressed towards the direction of the pressure stabilizing cavity 12, the switch end of the water pressure regulating and heating assembly 4 is controlled to be extruded to start the heating pipe 2, the heating pipe 2 is controlled to heat the water flow in the heating cavity 13, and the heated hot water is discharged through the water outlet. And a second state: when the water outlet of the water heater water blocking and heat stopping device is blocked, water flow accumulates in the cavity of the shell 1, and finally the water flow stops flowing. At this time, the static pressure of the water flow in the cavity of the housing 1 is the same, the water pressures at the two ends of the rubber end of the water pressure regulating and heating component 4 are the same and keep balance, and then the switch end of the water pressure regulating and heating component 4 is reset to close the heating pipe 2, so that the heating pipe 2 stops heating. And a third state: when the obstacles at the water outlet are cleaned and the water flow can flow normally, the movement process of the first state is repeated, and the heating pipe 2 continues to heat the water flow in the heating cavity 13. Through the process, when the water outlet end of the water plugging and heat stopping device of the water heater is blocked, the heating can be automatically stopped, the potential safety hazard problem caused by overheating of the cavity water temperature due to continuous heating after the water outlet end is blocked is prevented, the device is safer, meanwhile, unnecessary energy loss is reduced, and the device is more energy-saving. When the water outlet end is blocked, the heating can be automatically stopped, the heating device does not need to be manually closed, and the use is more convenient.
The water pressure regulating heating assembly 4 can control the opening and closing of the heating pipe 2. Further, the water pressure regulation heating assembly 4 comprises a rubber part 41, a rocker 42, a micro switch 43 and a support frame 44, one end of the rocker 42 is embedded in the rubber part 41, the other end of the rocker 42 is matched with the key end of the micro switch 43, the rocker 42 can move in the support frame 44, the micro switch 43 is electrically connected with the heating pipe 2, the micro switch 43 is embedded in the support frame 44, the support frame 44 is fixed on the outer wall of the casing 1, the left end of the rubber part 41 is abutted to the support frame 44, the right end of the rubber part 41 is clamped on the inner wall of the casing 1, the upper end of the rubber part 41 is contacted with the pressure stabilizing cavity 12, and the lower end of the rubber part 41 is contacted with the pressure cavity 11. Wherein the support frame 44 plays a role in supporting and balancing. The first state: when the water outlet of the water heater water blocking and heat stopping device is not blocked, and water flow is in a normal water outlet flowing state, the water pressure is gradually reduced along the water flow flowing direction under the condition of no other external force, the water pressure in the pressure cavity 11 is greater than the water pressure in the pressure stabilizing cavity 12, at the moment, the water pressures at the two ends of the rubber piece 41 are different and are pressed towards the pressure stabilizing cavity 12, so that the rubber piece 41 drives the rocker plate 42 to pry towards the key end of the microswitch 43, the key end of the microswitch 43 is extruded to start the heating pipe 2, the heating pipe 2 is controlled to heat the water flow in the heating cavity 13, and the heated hot water is discharged through the water outlet pipe 3. And a second state: when the water outlet of the water heater water blocking and heat stopping device is blocked, water flow accumulates in the cavity of the shell 1, and finally the water flow stops flowing. At this time, the static pressure of the water flow in the cavity of the housing 1 is the same, the water pressures at the two ends of the rubber member 41 are the same and balanced, and the seesaw 42 is reset, so that the key end of the microswitch 43 is reset to close the heating pipe 2, and the heating pipe 2 stops heating. And a third state: when the obstacles at the water outlet are cleaned and the water flow can flow normally, the movement process of the first state is repeated, and the heating pipe 2 continues to heat the water flow in the heating cavity 13. Through the process, the water pressure regulating and controlling heating component 4 can control the opening and closing of the heating pipe 2, so that the water-plugging and heat-stopping device of the water heater is safer and more reliable, and the energy is saved.
In order to allow rocker 42 to be pressed against the push-button end of microswitch 43 when it is pried by pressure. Further, the rocker 42 is configured as a bevel rocker, a folding end of the bevel rocker is embedded in the rubber member 41, another folding end of the bevel rocker is matched with the button end of the microswitch 43, and the bevel rocker can move in the supporting frame 44. By configuring the rocker 42 as a dog-ear rocker, when the rubber member 41 is pressed to move, the dog-ear rocker is driven to rotate, so that the rocker 42 can be pressed to the key end of the microswitch 43 when being pressed to pry.
In order to allow rocker 42 to move within support bracket 44 without obstruction. Furthermore, a movable cavity 441 is formed in the supporting frame 44, the microswitch 43 is fixed in the movable cavity 441, and the rocker 42 can move in the movable cavity 441. Support bracket 44 is provided with a movable cavity 441 so that rocker 42 can move within support bracket 44 without obstruction.
In order to allow the housing 1 to be filled and drained. Furthermore, a shell water inlet 14 and a shell water outlet 15 are respectively formed in the outer wall of the shell 1, the shell water inlet 14 is communicated with the pressure cavity 11 through a water inlet pipeline 16, and the water outlet pipe 3 penetrates through the shell water outlet 15 to be communicated with the heating cavity 13. The water flow enters the housing 1 through the housing water inlet 14 and exits the housing 1 through the housing water outlet 15. Through the above structure, the housing 1 can be charged and discharged with water.
In order to prevent the pressure in the cavity from becoming too high. Furthermore, a pressure relief device 5 is arranged at the water inlet end of the shell water inlet 14. The pressure on the water inlet end of the shell water inlet 14 can be released through the pressure relief device 5, and the pressure in the cavity is prevented from being too high.
In order to prevent the water temperature of the water flow in the cavity from being too high. The outer wall of the shell 1 is fixed with a temperature controller 6, and the temperature measuring end of the temperature controller 6 is matched with the heating pipe 2. The temperature controller 6 can control the heating temperature of the heating pipe 2, so as to prevent the water flow in the cavity from being heated to an overhigh temperature and keep the water temperature in a reasonable interval.
In order to facilitate the installation of the water-blocking and heat-stopping device of the water heater. Further, a plurality of connecting members 7 are fixed to the housing 1. The user makes the water shutoff and heat-stopping device of the water heater conveniently installed on the wall body through a plurality of connecting pieces 7.
In order to allow the pressure chamber 11 to be supplied with water and to be discharged with water. Further, a pressure cavity water inlet 111 is formed in the water inlet end of the pressure cavity 11, a pressure cavity water outlet 112 is formed in the water outlet end of the pressure cavity 11, the aperture of the pressure cavity water inlet 111 is larger than that of the pressure cavity water outlet 112, the water inlet pipe 16 is communicated with the pressure cavity water inlet 111, and the heating cavity 13 is communicated with the pressure cavity water outlet 112. The water flow enters the pressure chamber 11 through the pressure chamber inlet 111 and exits the pressure chamber 11 through the pressure chamber outlet 112, so that the pressure chamber 11 can be filled with water and drained of water. And the aperture of the water inlet 111 of the pressure cavity is larger than that of the water outlet 112 of the pressure cavity, so that water can be accumulated in the pressure cavity 11 in a short time when flowing, and the pressure in the pressure cavity 11 is higher than that in the pressure stabilizing cavity 12.
In order to facilitate the disassembly and assembly of the water outlet pipe 3 and the shell water outlet 15. Further, the water outlet pipe 3 is in threaded connection with the shell water outlet 15, an internal thread 151 is formed in the hole wall of the shell water outlet 15, an external thread 31 is formed in the outer wall of the water outlet pipe 3, and the internal thread 151 is matched with the external thread 31. Through setting up internal thread 151 and external screw thread 31, make outlet pipe 3 and casing delivery port 15 realize threaded connection, convenient dismantlement and assembly.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (10)
1. The utility model provides a water heater stifled water heat-stopping device, includes casing (1), heating pipe (2) and outlet pipe (3), establish heating pipe (2) in casing (1), the delivery port of casing (1) with outlet pipe (3) are linked together, its characterized in that:
a water pressure regulating and heating assembly (4) is arranged on the shell (1);
a pressure cavity (11), a pressure stabilizing cavity (12) and a heating cavity (13) are respectively arranged in the shell (1);
the pressure cavity (11) is communicated with the heating cavity (13), and the heating cavity (13) is communicated with the pressure stabilizing cavity (12);
the pressure cavity (11) and the pressure stabilizing cavity (12) are respectively contacted with the rubber end of the water pressure regulating and heating component (4);
the switch end of the water pressure regulating and controlling heating component (4) is electrically connected with the heating pipe (2);
the heating pipe (2) is arranged in the heating cavity (13).
2. The water shutoff and heat-stopping device of the water heater according to claim 1, characterized in that:
the water pressure regulating and heating assembly (4) comprises a rubber part (41), a warping plate (42), a microswitch (43) and a support frame (44);
one end of the rocker (42) is embedded in the rubber piece (41), the other end of the rocker (42) is matched with the key end of the microswitch (43), and the rocker (42) can move in the support frame (44);
the micro switch (43) is electrically connected with the heating pipe (2);
the microswitch (43) is embedded in the support frame (44), and the support frame (44) is fixed on the outer wall of the shell (1);
the left end of the rubber piece (41) is fixed on the outer wall of the shell (1), the left end of the rubber piece (41) is abutted against the support frame (44), and the right end of the rubber piece (41) is clamped on the inner wall of the shell (1);
the upper end of the rubber piece (41) is in contact with the pressure stabilizing cavity (12), and the lower end of the rubber piece (41) is in contact with the pressure cavity (11).
3. The water shutoff and heat-stopping device of the water heater according to claim 2, characterized in that:
the rocker (42) is configured as a dog-ear rocker;
the hem end of dog-ear wane inlays to be established in rubber spare (41), another dog-ear end of dog-ear wane with the button end looks adaptation of micro-gap switch (43), just the dog-ear wane can do the activity in support frame (44).
4. The water shutoff and heat-stopping device of the water heater according to claim 2, characterized in that:
a movable cavity (441) is formed in the supporting frame (44);
the microswitch (43) is fixed in the movable cavity (441), and the rocker (42) can move in the movable cavity (441).
5. The water shutoff and heat-stopping device of the water heater according to claim 1, characterized in that:
a shell water inlet (14) and a shell water outlet (15) are respectively formed in the outer wall of the shell (1);
the shell water inlet (14) is communicated with the pressure cavity (11) through a water inlet pipeline (16);
the water outlet pipe (3) penetrates through the shell water outlet (15) and is communicated with the heating cavity (13).
6. The water shutoff and heat-stopping device of the water heater according to claim 5, characterized in that:
and a pressure relief device (5) is arranged at the water inlet end of the shell water inlet (14).
7. The water shutoff and heat-stopping device of the water heater according to claim 1, characterized in that:
a temperature controller (6) is fixed on the outer wall of the shell (1);
the temperature measuring end of the temperature controller (6) is matched with the heating pipe (2).
8. The water shutoff and heat-stopping device of the water heater according to claim 1, characterized in that:
a plurality of connecting pieces (7) are fixed on the shell (1).
9. The water shutoff and heat-stopping device of the water heater according to claim 5, characterized in that:
a water inlet end of the pressure cavity (11) is provided with a pressure cavity water inlet (111), and a water outlet end of the pressure cavity (11) is provided with a pressure cavity water outlet (112);
the aperture of the pressure cavity water inlet (111) is larger than that of the pressure cavity water outlet (112);
the water inlet pipeline (16) is communicated with the pressure cavity water inlet (111), and the heating cavity (13) is communicated with the pressure cavity water outlet (112).
10. The water shutoff and heat-stopping device of the water heater according to claim 5, characterized in that:
the water outlet pipe (3) is in threaded connection with the water outlet (15) of the shell;
an internal thread (151) is formed on the hole wall of the shell water outlet (15);
the outer wall of the water outlet pipe (3) is provided with an external thread (31);
the internal thread (151) is adapted to the external thread (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921619692.2U CN210718122U (en) | 2019-09-26 | 2019-09-26 | Water-blocking and heat-stopping device for water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921619692.2U CN210718122U (en) | 2019-09-26 | 2019-09-26 | Water-blocking and heat-stopping device for water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210718122U true CN210718122U (en) | 2020-06-09 |
Family
ID=70927306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921619692.2U Active CN210718122U (en) | 2019-09-26 | 2019-09-26 | Water-blocking and heat-stopping device for water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210718122U (en) |
-
2019
- 2019-09-26 CN CN201921619692.2U patent/CN210718122U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018090834A1 (en) | Cold and hot outlet water purifier and control method therefor | |
| WO2019201191A1 (en) | Water heating regulation control device and control method using same and standby circulation heating method | |
| CN210718122U (en) | Water-blocking and heat-stopping device for water heater | |
| CN206738616U (en) | Pressure-bearing type controls electric hot water tap | |
| CN111089427A (en) | Pressure difference water shutoff power-off device and instant heating type heater thereof | |
| GB2594320A (en) | Small water heater | |
| CN203928431U (en) | A kind of solar water heater auxiliary heating system and device | |
| CN203928365U (en) | Miniature water-heater | |
| CN217636227U (en) | Zero cooling water system of control by temperature change stop valve and gas heater | |
| CN214276172U (en) | Residential instant-heating water heating system | |
| WO2019015628A1 (en) | Water-saving, power-saving and time-saving electric heating faucet | |
| CN206504004U (en) | Electric hot water tap | |
| CN112376663B (en) | Intelligent closestool and control method thereof | |
| CN220185986U (en) | Electric heating faucet | |
| CN111853343B (en) | Instant heating system | |
| CN111365495A (en) | Automatic switch and pressure relief valve of water heater | |
| CN216346565U (en) | Hanging stove goes out water temperature control equipment and hanging stove | |
| CN207796217U (en) | A kind of tap quickly heated | |
| CN220687563U (en) | Automatic exhaust structure for water pump | |
| CN217004942U (en) | Electric water heater earth leakage protection structure | |
| CN2752568Y (en) | Electric heating water tap | |
| CN202392978U (en) | Water heater | |
| CN212299405U (en) | Household water storage type electric water heater | |
| CN217929260U (en) | Novel heating body | |
| CN212868716U (en) | Split type electric heating faucet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |