CN210373656U - Water distributing and collecting device and heat pump hot water system - Google Patents
Water distributing and collecting device and heat pump hot water system Download PDFInfo
- Publication number
- CN210373656U CN210373656U CN201920707892.7U CN201920707892U CN210373656U CN 210373656 U CN210373656 U CN 210373656U CN 201920707892 U CN201920707892 U CN 201920707892U CN 210373656 U CN210373656 U CN 210373656U
- Authority
- CN
- China
- Prior art keywords
- water
- pipe
- heat pump
- main
- branch
- 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 provides a water separator and collector, which comprises a water separator and a water collector, wherein the water separator comprises a water dividing main pipe and a plurality of water dividing branch pipes arranged on the water dividing main pipe, each water dividing branch pipe is communicated with a water inlet of the water dividing main pipe, and each water dividing branch pipe is provided with a low-power water pump; the water collector comprises a main water collecting pipe and a plurality of branch water collecting pipes arranged on the main water collecting pipe, each branch water collecting pipe is communicated with a water outlet of the main water collecting pipe, and fluid of the branch water collecting pipes is converged to the main water collecting pipe through the branch water collecting pipes. The utility model provides a divide water collector can reduce the energy consumption. The utility model also provides a heat pump hot water system.
Description
Technical Field
The utility model belongs to the technical field of the heat supply technique and specifically relates to a divide water collector and heat pump hot water system is related to.
Background
In the prior art, a high-power water pump is usually installed on a main water pipeline of a water dividing and collecting device, and on-off control is performed on each water dividing pipeline through an electromagnetic two-way valve, so that the high-power water pump on the main water pipeline needs to be started as long as the electromagnetic two-way valve of one water dividing pipeline is opened, and the high-power water pump is started for a long time, so that energy consumption is high.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a divide water collector and heat pump hot water system can reduce the energy consumption.
In order to solve the technical problem, an embodiment of the utility model provides a water separator and collector, which comprises a water separator and a collector, wherein the water separator comprises a main water separator and a plurality of branch water pipes arranged on the main water separator, each branch water pipe is communicated with a water inlet of the main water separator, and each branch water pipe is provided with a low-power water pump;
the water collector comprises a main water collecting pipe and a plurality of branch water collecting pipes arranged on the main water collecting pipe, each branch water collecting pipe is communicated with a water outlet of the main water collecting pipe, and fluid of the branch water collecting pipes is converged to the main water collecting pipe through the branch water collecting pipes.
As a preferred scheme, a first automatic exhaust valve and a first reserved water gap are arranged on the water diversion main pipe.
As a preferred scheme, a second automatic exhaust valve and a second reserved water gap are arranged on the water collecting main pipe.
In order to solve the same technical problem, an embodiment of the present invention provides a heat pump hot water system, which includes a controller, a heat pump heating device, a plurality of hot water usage terminals, and any one of the above described water dividing and collecting devices;
the water outlet of the heat pump heating device is connected with the water inlet of the main water diversion pipe, and the low-power water pump on each water diversion branch pipe is electrically connected with the controller; the water inlet of the heat pump heating device is connected with the water outlet of the main water collecting pipe;
the branch water pipe is connected with the water inlet of the hot water using end, the water outlet of the hot water using end is connected with the branch water collecting pipe, and the branch water pipe, the hot water using end and the branch water collecting pipe are in unique corresponding relation.
As the preferred scheme, the hot water using end is a ground heating pipe laying.
Preferably, the hot water using end is a water consumption point water tank which is used for being installed in a using space; the water consumption point water tank is connected with a water replenishing pipeline.
Preferably, the water consumption point water tank is a wall-mounted water tank or a floor-type water tank.
Preferably, the heat pump heating device comprises a variable frequency heat pump, and a refrigerant pipeline of the variable frequency heat pump is respectively connected with the water diversion main pipe and the water collection main pipe.
According to a preferable scheme, the heat pump heating device comprises a variable frequency heat pump and a heat exchange device, the refrigerant output end of the variable frequency heat pump is connected with the refrigerant input end of the heat exchange device, the refrigerant input end of the variable frequency heat pump is connected with the refrigerant output end of the heat exchange device, the water inlet of the water diversion main pipe is connected with the water outlet of the heat exchange device, and the water outlet of the water collection main pipe is connected with the water inlet of the heat exchange device.
Preferably, the heat exchange device comprises a double-pipe heat exchanger or a heat exchange water tank; and a refrigerant heating coil of the heat exchange water tank is wound on the side wall of the water tank or is arranged in the water tank.
Compared with the prior art, the embodiment of the utility model has the advantages that the on-off and the water volume of each water diversion branch can be independently controlled by the low-power water pump through arranging the low-power water pump on the water diversion branch pipe to replace the existing centralized control water pump, thereby being beneficial to reducing energy consumption; therefore, compared with a high-power water pump and an electromagnetic two-way valve adopted in the prior art, the water distributor-collector of the embodiment has the advantages of lower power consumption, low price, high efficiency and energy conservation.
Drawings
Fig. 1 is a schematic structural diagram of a heat pump hot water system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a heat pump hot water system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a heat pump hot water system according to an embodiment of the present invention;
wherein the reference numbers in the drawings of the specification are as follows:
1. a water diversion main pipe; 2. a low-power water pump; 3. a first automatic exhaust valve; 4. a second automatic exhaust valve; 5. a main water collecting pipe; 6. dropping the water tank with water; 7. a first reserved water gap; 8. a second reserved water gap; 9. a variable frequency heat pump; 10. and (5) laying pipes in water and ground.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model discloses a first embodiment:
referring to fig. 1, a preferred embodiment of the present invention provides a water distributor and collector, where the water distributor includes a main water distributor 1 and a plurality of branch water distributors arranged on the main water distributor 1, each branch water distributor is communicated with a water inlet of the main water distributor 1, and each branch water distributor is provided with a low-power water pump 2;
the water collector comprises a water collecting main pipe 5 and a plurality of water collecting branch pipes arranged on the water collecting main pipe 5, each water collecting branch pipe is communicated with a water outlet of the water collecting main pipe 5, and fluid of the water distributing branch pipes is converged to the water collecting main pipe 5 through the water collecting branch pipes.
In the embodiment, the small-power water pumps 2 are arranged on the water diversion branch pipes, so that the on-off and water quantity of each water diversion branch pipe can be independently controlled through the small-power water pumps 2 to replace the existing centralized control water pump, and the energy consumption is favorably reduced; like this, compare in the high-power water pump and the electromagnetism two-way valve that prior art adopted, the 2 consumption of low-power water pump of this embodiment are lower, and the price is substantial, energy-efficient.
In this embodiment, the main water diversion pipe 1 is provided with a first automatic exhaust valve 3. The first automatic exhaust valve 3 is arranged on an exhaust pipeline of the main water diversion pipe 1. When the gas pressure in the water diversion main pipe 1 is too high, the gas in the water diversion main pipe 1 is discharged through the first automatic exhaust valve 3 and the exhaust pipeline so as to reduce the gas pressure in the water diversion main pipe 1, and the safety of the water diversion process is favorably improved.
In this embodiment, the main water diversion pipe 1 is provided with a first reserved water gap 7. And a reserved water pipeline with a low-power water pump 2 is arranged on the first reserved water gap 7. Through setting up reserve water pipeline for follow-up when needing to increase the hot water user end, accessible reserve water pipeline realizes newly increasing the hot water user end with the intercommunication of the water diversion main pipe 1. And when the reserved water pipeline is communicated with the newly-heated water using end, the low-power water pump 2 is electrically connected with the controller.
In this embodiment, the main water collecting pipe 5 is provided with a second automatic exhaust valve 4. The second automatic exhaust valve 4 is installed on an exhaust pipeline of the main water collecting pipe 5. When the air pressure in the main water collecting pipe 5 is too high, the air pressure in the main water collecting pipe 5 is reduced by the aid of the second automatic exhaust valve 4 and the exhaust pipeline for exhausting the air in the main water collecting pipe 5, and safety of a water collecting and distributing process is improved.
In this embodiment, the main water collecting pipe 5 is provided with a second reserved water gap 8. The second reserved water gap 8 is arranged, so that the communication between the newly-increased hot water using end and the water collecting main pipe 5 can be carried out through the reserved water gap if the hot water using end needs to be increased subsequently.
The utility model discloses the second embodiment:
referring to fig. 2, a second embodiment provides a heat pump hot water system, which includes a controller, a heat pump heating device, a plurality of hot water usage terminals, and a water collecting and collecting device of the first embodiment;
the water outlet of the heat pump heating device is connected with the water inlet of the main water diversion pipe 1, and the low-power water pump 2 on each water diversion branch pipe is electrically connected with the controller; the water inlet of the heat pump heating device is connected with the water outlet of the main water collecting pipe 5; the low-power water pump 22 controls the start and stop of the low-power water pump and the flow rate of the low-power water pump through a controller, and meanwhile, the controller is connected with the heat pump heating device to realize the functions of controlling the start of the heat pump heating device, adjusting the water temperature and the like;
the branch water pipe is connected with the water inlet of the hot water using end, the water outlet of the hot water using end is connected with the branch water collecting pipe, and the branch water pipe, the hot water using end and the branch water collecting pipe are in unique corresponding relation. Through setting up branch pipe, hot water user end, branch pipe catchments is the corresponding relation for each the water use of hot water user end does not influence each other, and each the hot water user end regulates and control opening and stopping and the flow size of miniwatt water pump 2 on the branch road that divides at place according to the water demand, thereby supplies hot water according to actual demand, and then improves user and uses experience.
In one embodiment, the hot water using end is a floor heating pipe; the floor heating pipe laying package comprises a waterless floor heating pipe laying and a waterless floor heating pipe laying.
When the waterless floor heating pipe laying is adopted, the waterless floor heating pipe laying utilizes a refrigerant to realize heating, then the heat pump heating device can be a variable frequency heat pump, the refrigerant with higher temperature of the variable frequency heat pump flows into each waterless floor heating pipe laying through the water separator, then the refrigerant with lower temperature converges into the water collector, finally flows back to the variable frequency heat pump to be reheated, and the circulation realizes heating.
When the water and floor heating pipes 10 are adopted, as shown in fig. 2, the water and floor heating pipes realize heating by using hot water, a variable frequency heat pump and a heat exchange device are required to be used in the heat pump heating device to realize heat exchange between a refrigerant and water, the heat exchange device can be a sleeve heat exchanger, a heat exchange water tank and the like, hot water prepared by the heat exchange device flows into the water and floor heating pipes 10 through the water separator, then water with lower temperature is converged into the water collector and finally flows back to the heat exchange device to be reheated, and the circulation is performed to realize heating.
The utility model discloses the third embodiment:
referring to fig. 1 and 3, a third embodiment provides a heat pump hot water system, which includes a controller, a heat pump heating device, a plurality of hot water usage terminals, and a water dividing and collecting device of the first embodiment;
the water outlet of the heat pump heating device is connected with the water inlet of the main water diversion pipe 1, and the low-power water pump 2 on each water diversion branch pipe is electrically connected with the controller; the water inlet of the heat pump heating device is connected with the water outlet of the main water collecting pipe 5;
the branch water pipe is connected with the water inlet of the hot water using end, the water outlet of the hot water using end is connected with the branch water collecting pipe, and the branch water pipe, the hot water using end and the branch water collecting pipe are in unique corresponding relation.
In one embodiment, as shown in fig. 1, the hot water use end is a water spot tank 6 for installation in a use space. Set up a plurality of water consumption point water tanks 6 that are used for installing in usage spaces such as kitchen, visitor defend, main defend through parallel connection, make water consumption point water tank 6 is close to the water consumption point, make full use of vacant space and use in a flexible way, can guarantee the play water temperature of water consumption point to each water consumption point water does not influence each other, thereby improves user's use and experiences. The water consumption point water tank 6 is connected with a water replenishing pipeline, and when the water level of the water consumption point water tank 6 or the water level of the heat pump heating device is insufficient, water can be replenished through the water replenishing pipeline.
In one embodiment, the water consumption point water tank 6 is a wall-mounted water tank or a floor-type water tank, and the type of the water tank can be determined according to the actual spatial layout of the water consumption point, for example, the wall-mounted water tank is used in a kitchen, and the upper space of the kitchen is fully utilized, so that the floor occupation area is saved on the basis of realizing normal hot water supply, the actual use area of the kitchen is increased, and the use experience of a user is improved; and for example, a floor-type water tank can be used in a main and bathroom with a large area and a large hot water demand so as to provide a large amount of hot water for daily activities such as washing and rinsing. Wherein, owing to adopt wall-hanging water tank or floor type water tank, when the user is using hot water, can open according to the temperature demand the valve of moisturizing pipeline to make cold water and hot water mix, thereby obtain the water of suitable temperature and use.
Through adopting the parallelly connected mode of many water tanks in this embodiment for each water point water use does not influence each other, uses in a flexible way, is favorable to reducing the condition that a plurality of water points water use simultaneously in the family leads to the temperature not enough, thereby makes the use that increases the user experience.
In this embodiment, the heat pump heating device includes a variable frequency heat pump 9 and a heat exchange device, a refrigerant output end of the variable frequency heat pump is connected with a refrigerant input end of the heat exchange device, a refrigerant input end of the variable frequency heat pump is connected with a refrigerant output end of the heat exchange device, a water inlet of the water diversion main pipe 1 is connected with a water outlet of the heat exchange device, and a water outlet of the water collection main pipe 5 is connected with a water inlet of the heat exchange device. Wherein the heat exchange device comprises a double-pipe heat exchanger or a heat exchange water tank; and a refrigerant heating coil of the heat exchange water tank is wound on the side wall of the water tank or is arranged in the water tank.
The refrigerant heating coil is adopted to heat hot water in the heat exchange water tank, so that the heat exchange water tank realizes a heat exchange function to heat water in the water tank. When the refrigerant heating coil is wound outside the heat exchange water tank, the refrigerant heating coil is tightly attached to the outer side wall of the heat exchange water tank, and the heat exchange distance is increased in a surrounding mode, so that the refrigerant and the water in the water tank can be subjected to sufficient heat exchange; when the refrigerant heating coil is arranged in the heat exchange water tank, the coil structure can increase the flow path of the refrigerant in the heat exchange water tank, so that the water in the heat exchange water tank can be favorably subjected to sufficient heat exchange with the refrigerant through the pipe wall of the refrigerant heating coil, and the refrigerant heating coil is favorable for enhancing the heat exchange effect.
In one embodiment, the refrigerant heating coil is wound on the outer side wall of the heat exchange water tank. Will refrigerant heating coil winding can be avoided mode on heat exchange water tank's the lateral wall refrigerant heating coil and water direct contact improve the security, thereby improve refrigerant heating coil's life, simultaneously, use winding mode can realize increasing the heat transfer distance to be favorable to refrigerant and water tank water-logging to carry out abundant heat transfer, and then have reinforcing heat transfer effect.
In one embodiment, the refrigerant heating coil is installed in the heat exchange water tank. When the refrigerant heating coil is arranged in the heat exchange water tank, the coil structure can increase the flow path of the refrigerant in the heat exchange water tank, so that water in the heat exchange water tank can be favorably subjected to sufficient heat exchange with the refrigerant through the pipe wall of the refrigerant heating coil, and the heat exchange effect can be favorably enhanced.
Compared with the prior art, the embodiment of the utility model provides a divide water collector and heat pump hot water system has following beneficial effect:
(1) the small-power water pumps 2 are arranged on the water diversion branch pipes, so that the on-off and water quantity of each water diversion branch pipe can be independently controlled through the small-power water pumps 2 to replace the existing centralized control water pumps, and the energy consumption is reduced; like this, compare in the high-power water pump and the electromagnetism two-way valve that prior art adopted, the 2 consumption of low-power water pump of this embodiment are lower, and the price is substantial, energy-efficient.
(2) The heat pump hot water system is not only suitable for waterless ground heating pipe laying, has the waterless ground heating pipe laying, and accessible parallel mode sets up a plurality of water consumption point water tanks 6 that are used for installing in usage space such as kitchen, visitor's health, main health, makes water consumption point water tank 6 is close to the water consumption point, and the spare space of make full use of just uses in a flexible way, can guarantee the play water temperature of water consumption point to each water consumption point water does not influence each other, thereby improves user's use and experiences.
(3) Through adopting the parallelly connected mode of many water tanks, a plurality of hot water use points set up water consumption point water tank 6 respectively at the family, water consumption point water tank 6 is installed respectively in each space that needs to use such as kitchen, visitor's health, main health, and water consumption point water tank 6 adopts multiple modes such as wall-hanging or console mode, makes the installation water consumption point water tank 6 can make full use of vacant space to be favorable to reducing area, and then improve user's use and experience.
(4) Carry out being connected between heat pump heating device and each water point water tank 6 through dividing the water collector, and every water route all adopts little water pipe circulation heating to open according to the use needs and stop miniwatt water pump 2 compares in current centralized control water pump, is favorable to reducing hydrologic cycle heat waste, just water point water tank 6 is close to out the water point, and hot water goes out water soon and each water point water use does not influence each other, thereby improves user's use and experiences.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. The water separator is characterized by comprising a water separator and a water collector, wherein the water separator comprises a main water separating pipe and a plurality of branch water separating pipes arranged on the main water separating pipe, each branch water separating pipe is communicated with a water inlet of the main water separating pipe, and a low-power water pump is arranged on each branch water separating pipe;
the water collector comprises a main water collecting pipe and a plurality of branch water collecting pipes arranged on the main water collecting pipe, each branch water collecting pipe is communicated with a water outlet of the main water collecting pipe, and fluid of the branch water collecting pipes is converged to the main water collecting pipe through the branch water collecting pipes.
2. The water dividing and collecting device as claimed in claim 1, wherein the main water dividing pipe is provided with a first automatic exhaust valve.
3. The water dividing and collecting device as claimed in claim 1 or 2, wherein the main water collecting pipe is provided with a second automatic exhaust valve.
4. A heat pump hot water system, which is characterized by comprising a controller, a heat pump heating device, a plurality of hot water using ends and a water dividing and collecting device according to any one of claims 1 to 3;
the water outlet of the heat pump heating device is connected with the water inlet of the main water diversion pipe, and the low-power water pump on each water diversion branch pipe is electrically connected with the controller; the water inlet of the heat pump heating device is connected with the water outlet of the main water collecting pipe;
the branch water pipe is connected with the water inlet of the hot water using end, the water outlet of the hot water using end is connected with the branch water collecting pipe, and the branch water pipe, the hot water using end and the branch water collecting pipe are in unique corresponding relation.
5. The heat pump hot water system as claimed in claim 4, wherein the hot water use end is a floor heating pipe.
6. The heat pump hot water system as claimed in claim 4, wherein the hot water usage end is a point of use water tank for installation in a usage space; the water consumption point water tank is connected with a water replenishing pipeline.
7. The heat pump hot water system as claimed in claim 6, wherein the water using point tank is a wall-mounted tank or a floor-mounted tank.
8. The heat pump hot water system as claimed in claim 4, wherein the heat pump heating device comprises a variable frequency heat pump, and refrigerant pipelines of the variable frequency heat pump are respectively connected with the water diversion main pipe and the water collection main pipe.
9. The heat pump hot water system as claimed in claim 4, wherein the heat pump heating device comprises a variable frequency heat pump and a heat exchange device, a refrigerant output end of the variable frequency heat pump is connected with a refrigerant input end of the heat exchange device, a refrigerant input end of the variable frequency heat pump is connected with a refrigerant output end of the heat exchange device, a water inlet of the water diversion main pipe is connected with a water outlet of the heat exchange device, and a water outlet of the water collection main pipe is connected with a water inlet of the heat exchange device.
10. The heat pump hot water system as claimed in claim 9, wherein said heat exchange means comprises a double pipe heat exchanger or a heat exchange water tank; and a refrigerant heating coil of the heat exchange water tank is wound on the side wall of the water tank or is arranged in the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920707892.7U CN210373656U (en) | 2019-05-16 | 2019-05-16 | Water distributing and collecting device and heat pump hot water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920707892.7U CN210373656U (en) | 2019-05-16 | 2019-05-16 | Water distributing and collecting device and heat pump hot water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210373656U true CN210373656U (en) | 2020-04-21 |
Family
ID=70260556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920707892.7U Active CN210373656U (en) | 2019-05-16 | 2019-05-16 | Water distributing and collecting device and heat pump hot water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210373656U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779131A (en) * | 2020-07-09 | 2020-10-16 | 马贞超 | Steel construction house system and connection structure of steel construction post and steel construction roof beam |
| CN113028492A (en) * | 2021-03-16 | 2021-06-25 | 西安交通大学 | Heat exchange station heat exchanger and circulating pump operation switching adjusting device and working method |
-
2019
- 2019-05-16 CN CN201920707892.7U patent/CN210373656U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779131A (en) * | 2020-07-09 | 2020-10-16 | 马贞超 | Steel construction house system and connection structure of steel construction post and steel construction roof beam |
| CN113028492A (en) * | 2021-03-16 | 2021-06-25 | 西安交通大学 | Heat exchange station heat exchanger and circulating pump operation switching adjusting device and working method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210373656U (en) | Water distributing and collecting device and heat pump hot water system | |
| RU2508509C1 (en) | Heating unit for production of hot water for domestic needs | |
| CN103277949A (en) | Shunting control device and method, multi-online air conditioning system and air conditioner | |
| CN108151114A (en) | Heating plant | |
| CN210179732U (en) | Heat pump heating device and heating system | |
| CN202328466U (en) | Indoor heat supply device based on concentrated heat supply system | |
| CN110081494A (en) | A kind of heat pump heating device and heating system | |
| CN201121974Y (en) | Water heater | |
| CN211345487U (en) | One-stop air source hot water supply system | |
| CN201302293Y (en) | Multifunctional insulating water tank | |
| CN206001687U (en) | A kind of heat storage electric boiler system | |
| CN201448918U (en) | High-intelligent plate heat exchanger unit | |
| CN201368525Y (en) | Heat storage device with common heat source for domestic hot water and heating water | |
| CN204962923U (en) | Adopt energy -conserving heating system who thoughtlessly supplies unit | |
| CN211261137U (en) | Zero-resistance efficient machine room framework | |
| CN113803816A (en) | Water source VRF air conditioning system coupled with all-year cooling system and use method thereof | |
| CN107420961B (en) | Solar heating system | |
| CN107560147B (en) | Household air source heat pump hot water system assisted by gas wall-mounted boiler and control method thereof | |
| CN213066547U (en) | Heat recovery water system of heat pump hot water unit | |
| CN211823142U (en) | Air energy water heater device | |
| CN111425978A (en) | Energy supply device of two-combined-supply system and control method thereof | |
| CN210373666U (en) | Integrated heat exchange device and heat pump system | |
| CN111089325A (en) | Boiler heat supply system and heat supply method thereof | |
| CN213656919U (en) | Energy-saving heating system | |
| CN105674511B (en) | Unattended can peak regulation cool hot source of centralized Air conditioning system modular system and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |