CN204460671U - Electric heater - Google Patents
Electric heater Download PDFInfo
- Publication number
- CN204460671U CN204460671U CN201520026028.2U CN201520026028U CN204460671U CN 204460671 U CN204460671 U CN 204460671U CN 201520026028 U CN201520026028 U CN 201520026028U CN 204460671 U CN204460671 U CN 204460671U
- Authority
- CN
- China
- Prior art keywords
- pipeline section
- inner bag
- tube
- heating
- electric heater
- 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
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model relates to electric heater.This electric heater comprise for water storage inner bag and extend in inner bag the water in inner bag to be transported to the outlet pipe outside inner bag.Especially, this electric heater also comprises: ring flange, is removably fixed on one end of inner bag; Temperature tube, it extends in inner bag from the initiating terminal being installed on ring flange, the inside bore stretching into inner bag of the contiguous outlet pipe of its end.Because the inside bore of the contiguous outlet pipe of the end of temperature tube in electric heater of the present utility model, the water temperature of the inside bore of contiguous outlet pipe can be sensed in time, namely can sense coolant-temperature gage exactly in the very first time and show, top water temperature in inner bag accurately can be understood to make user, solving all inconvenience that user brings because of worrying displays temperature inaccurate, significantly improving the convenience of user.
Description
Technical field
The utility model relates to technical field of water heaters, particularly relates to a kind of electric heater.
Background technology
Along with the development of Chinese society's economic construction, the raising of consumers living and the quickening of Re-search on Urbanization process, water heater has become the indispensable household electrical appliance of consumer.Electric heater is due to its convenience used and itself increasing hommization function, and the functions such as such as intelligent mode, insulation, reservation, dynamic heat, occupation rate is in the market more and more higher.
Along with growth in the living standard, the requirement of consumer to bathing also improves thereupon.But, temp measuring systems most in existing electric heater is by being fixed in inner bag top exterior walls by a temperature tube, such as, first thermometric base is welded on inner bladder outer wall, then temperature tube is inserted thermometric base, because temperature-sensitive position cannot directly contact with waters in courage, temperature-sensitive can only be carried out through inner bag courage wall and temperature tube by heat conduction, cannot perception leaving water temperature timely and accurately, water temperature in courage can be caused so may to be heated to high-temperature region, and displays temperature is in middle warm area due to heat conducting delay.Or use in the process of water user, in courage, hot water may discharge complete, and displays temperature can also continue to support bathing, and this just brings great inconvenience to user, and user cannot judge the hot water conditions of inner bag in time according to displays temperature.
Utility model content
An object of the present utility model is intended at least one defect overcoming existing water heater, and provide a kind of electric heater, it can detect coolant-temperature gage timely and accurately.
A further object of the present utility model is the installation as far as possible will being convenient to temperature tube.
In order to realize at least one object above-mentioned, the utility model provides a kind of electric heater, comprise for water storage inner bag and extend in described inner bag the water in described inner bag to be transported to the outlet pipe outside described inner bag.Especially, this electric heater also comprises:
Ring flange, is removably fixed on one end of described inner bag;
Temperature tube, it extends in described inner bag from the initiating terminal being installed on described ring flange, the inside bore stretching into described inner bag of the contiguous described outlet pipe of its end.
Alternatively, the projection of the inside bore of described outlet pipe in horizontal plane is positioned at the middle part of described inner bag in the projection of horizontal plane.
Alternatively, the distance between the projection of the end of the projection of the inside bore of described outlet pipe in a horizontal plane and described temperature tube in this horizontal plane is less than or equal to 1/6 of described inner bag interior diameter;
Vertical distance between the projection in this perpendicular of the end of the projection in a perpendicular of the inside bore of described outlet pipe and described temperature tube is less than or equal to 1/6 of described inner bag interior diameter.
Alternatively, the end of described temperature tube is lower than the inside bore of described outlet pipe.
Alternatively, described electric heater also comprises: top layer heating tube, is configured at least heat the part or all of water of the inside bore of contiguous described outlet pipe.
Alternatively, the initiating terminal of described top layer heating tube and end are all installed on described ring flange; And described top layer heating tube comprises:
From the initiating terminal of described top layer heating tube in the horizontal direction towards the first heating pipeline section that the other end of described inner bag extends;
From the second heating pipeline section that described first heating pipeline section oliquely downward extends;
The 3rd heating pipeline section extended towards the other end of described inner bag is continued in the horizontal direction from described second heating pipeline section;
From the 4th heating pipeline section that described 3rd heating pipeline section extends upward;
The spiral replication heating pipeline section of inside bore that extend downwards from described 4th heating pipeline section, contiguous described outlet pipe;
From the slender acanthopanax heat pipe section that described spiral replication heating pipeline section extends downwards;
Extend towards described ring flange in the horizontal direction from described slender acanthopanax heat pipe section, to heat with the described 3rd pipeline section concordant the 6th heat pipeline section;
From the 7th heating pipeline section that described 6th heating pipeline section extends obliquely upward; With
From described 7th heating pipeline section continue in the horizontal direction towards described ring flange extend to described top layer heating tube end, to heat with described first pipeline section concordant the 8th heat pipeline section.
Alternatively, described temperature tube comprises:
From the initiating terminal of described temperature tube in the horizontal direction towards the first thermometric pipeline section that the other end of described inner bag extends;
From the second thermometric pipeline section that described first thermometric pipeline section oliquely downward extends;
The 3rd thermometric pipeline section extended towards the other end of described inner bag is continued in the horizontal direction from described second thermometric pipeline section; With
The 4th thermometric pipeline section of described temperature tube end is extended to obliquely upward from described 3rd thermometric pipeline section.
Alternatively, the 4th temperature tube section of described temperature tube is positioned between the 4th heating pipeline section of described top layer heating tube and described ring flange; And the 4th of the 4th thermometric pipeline section of described temperature tube and described top layer heating tube the heats pipeline section and is parallel to each other.
Alternatively, the first thermometric pipeline section of described temperature tube and the first spacing heated between pipeline section of described top layer heating tube are less than or equal to 1/5 of described inner bag interior diameter;
3rd thermometric pipeline section of described temperature tube and the 3rd spacing heated between pipeline section of described top layer heating tube are less than or equal to 1/5 of described inner bag interior diameter;
4th thermometric pipeline section of described temperature tube and the 4th spacing heated between pipeline section of described top layer heating tube are less than or equal to 1/5 of described inner bag interior diameter.
Alternatively, the courage wall that described outlet pipe is fixed on described inner bag bottom from it extends straight up, and passes from the central collar aperture that the spiral replication heating pipeline section of described top layer heating tube limits.
Because the inside bore of the contiguous outlet pipe of the end of temperature tube in electric heater of the present utility model, the water temperature of the inside bore of contiguous outlet pipe can be sensed in time, namely can sense coolant-temperature gage exactly in the very first time and show, top water temperature in inner bag accurately can be understood to make user, solving all inconvenience that user brings because of worrying displays temperature inaccurate, significantly improving the convenience of user.
Further, because temperature tube in electric heater of the present utility model is mounted in the ring flange for installing heating tube, reducing the technique of temperature tube and complexity is installed, having saved production cost, ensure that product quality.In addition, electric heater of the present utility model also eliminates thermometric base, provides cost savings further.
Further, due to top layer heating tube in electric heater of the present utility model and the special structure of temperature tube, make inner bag internal structure compact, meanwhile, be also convenient to ring flange and with its on the pre-arrangement that forms of each device of installing installation, transport and deposit.
According to hereafter by reference to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will understand above-mentioned and other objects, advantage and feature of the present utility model more.
Accompanying drawing explanation
Hereinafter describe specific embodiments more of the present utility model with reference to the accompanying drawings by way of example, and not by way of limitation in detail.Reference numeral identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that these accompanying drawings may not be drawn in proportion.In accompanying drawing:
Fig. 1 is the schematic diagram of the electric heater according to the utility model embodiment;
Fig. 2 is the schematic local structural graph of the electric heater according to the utility model embodiment.
Detailed description of the invention
Fig. 1 is the schematic diagram of the electric heater according to the utility model embodiment.As shown in Figure 1, and with reference to figure 2, the utility model embodiment provides a kind of electric heater, it can comprise for the inner bag 100 of water storage, for the heater that heats the water in inner bag 100 with extend into the water in inner bag 100 to be transported to the outlet pipe 200 outside inner bag 100 in inner bag 100, and is removably fixed on the ring flange 300 of one end of inner bag 100.
Heater can comprise: for the bottom heating tube 510 of the full courage water of heating inner liner 100, at least for the top layer heating tube 530 of the intermediate layer heating tube 520 of heating inner liner 100 water in intermediate layer and the water for heating inner liner 100 top layer regions.Because the proportion of hot water is less than cold water, hot water can upwards flow and cold water can flow downward, and produce convection current, therefore, every layer of heating tube only can heat the water being positioned at this layer and above region.Adopt the heater that the present embodiment provides, the any combination that controller can be utilized to control above-mentioned several heating tube heats the water in inner bag 100, an i.e. independent heating or severally simultaneously to heat, such as when user wants to use a small amount of hot water, electric heater uses a small amount of hot water in heating tube heating local, top can avoid wasting waste heat.Bottom heating tube 510, intermediate layer heating tube 520 and top layer heating tube 530 all can be installed on ring flange 300.
In order to coolant-temperature gage can be detected exactly, the display unit that the electric heater in the utility model embodiment also can comprise temperature tube 400 and be electrically connected with temperature tube 400.Temperature tube 400 extends in inner bag 100 from the initiating terminal being installed on ring flange 300, and the inside bore 201 stretching into inner bag 100 of the contiguous outlet pipe 200 of its end, to sense the water temperature of the inside bore 201 of contiguous outlet pipe 200.Display unit can show the water temperature at inside bore 201 place closing on outlet pipe 200 that temperature tube 400 senses, the temperature of display unit display can reflect the water temperature that inner bag 100 is current in real time accurately, such user just open-and-shutly can learn hot water conditions in inner bag 100, can accomplish calm bathing.
Particularly, the projection of the inside bore 201 of outlet pipe 200 in horizontal plane can be positioned at the middle part of inner bag 100 in the projection of horizontal plane.Distance between the projection in this horizontal plane of the end of the projection in a horizontal plane of the inside bore 201 of outlet pipe 200 and temperature tube 400 is less than or equal to 1/6 of inner bag 100 interior diameter; Vertical distance between the projection in this perpendicular of the end of the projection in a perpendicular of the inside bore 201 of outlet pipe 200 and temperature tube 400 is less than or equal to 1/6 of inner bag 100 interior diameter, to make the inside bore 201 of the contiguous outlet pipe 200 of the end of temperature tube 400.The end of temperature tube 400 can be arranged lower than the inside bore 201 of outlet pipe 200.
In embodiments more of the present utility model, top layer heating tube 530 also can heat the part or all of water of the inside bore 201 of contiguous outlet pipe 200, namely, in the utility model embodiment, top layer heating tube 530 can be configured at least heat the part or all of water of the inside bore 201 of contiguous outlet pipe 200.The initiating terminal of top layer heating tube 530 and end are all installed on ring flange 300.
Top layer heating tube 530 can comprise: from the initiating terminal of top layer heating tube 530 in the horizontal direction towards the first heating pipeline section 531 that the other end of inner bag 100 extends; From the second heating pipeline section that the first heating pipeline section 531 oliquely downward extends; The 3rd heating pipeline section 533 extended towards the other end of inner bag 100 is continued in the horizontal direction from the second heating pipeline section; From the 4th heating pipeline section 535 that the 3rd heating pipeline section 533 extends upward; The spiral replication heating pipeline section 536 of inside bore 201 that extend downwards from the 4th heating pipeline section 535, contiguous outlet pipe 200; From the slender acanthopanax heat pipe section that spiral replication heating pipeline section 536 extends downwards; Extend towards ring flange 300 in the horizontal direction from slender acanthopanax heat pipe section, to heat with the 3rd pipeline section 533 concordant the 6th heat pipeline section; From the 7th heating pipeline section that the 6th heating pipeline section extends obliquely upward; With continue in the horizontal direction from the 7th heating pipeline section towards ring flange 300 extend to top layer heating tube 530 end, to heat with first pipeline section 531 concordant the 8th heat pipeline section.The special construction of top layer heating tube 30 can make it have the portions with bottom heating tube 510 conformal, and to make the compact conformation of heater, mechanical strength is high.
In the utility model embodiment, temperature tube 400 comprises: from the initiating terminal of temperature tube 400 in the horizontal direction towards the first thermometric pipeline section 402 that the other end of inner bag 100 extends; From the second thermometric pipeline section that the first thermometric pipeline section 402 oliquely downward extends; The 3rd thermometric pipeline section 404 extended towards the other end of inner bag 100 is continued in the horizontal direction from the second thermometric pipeline section; With the 4th thermometric pipeline section 406 extending to temperature tube 400 end from the 3rd thermometric pipeline section 404 obliquely upward.The special construction of temperature tube 400 can make temperature tube arrange with top layer heating tube conformal approx; its end can be near the peak of top layer heating tube 530; to detect the water temperature after top layer heating tube 530 heating; the i.e. water temperature of inside bore 201 vicinity of outlet pipe 200; temperature tube 400 can be protected; to prevent temperature tube 400 from fractureing in transport, the process deposited, be also that the internal structure of inner bag 100 is compact simultaneously.
First thermometric pipeline section 402 of temperature tube 400 can be arranged at the oblique below of the first heating pipeline section 531 of top layer heating tube 530, and the first spacing heated between pipeline section 531 of the first thermometric pipeline section 402 of temperature tube 400 and top layer heating tube 530 is less than or equal to 1/5 of inner bag 100 interior diameter.3rd thermometric pipeline section 404 of temperature tube 400 can be arranged at the oblique below of the 3rd heating pipeline section 533 of top layer heating tube 530, and the 3rd spacing heated between pipeline section 533 of the 3rd thermometric pipeline section 404 of temperature tube 400 and top layer heating tube 530 is less than or equal to 1/5 of inner bag 100 interior diameter.Here spacing refers to: when two pipes are parallel, spacing is the distance between two parallel pipes; When two pipes are not parallel, spacing is that any point on a pipe is to the ultimate range on another pipe.In the utility model embodiment, first thermometric pipeline section 402 of temperature tube 400 heats pipeline section 531 with first of top layer heating tube 530 and can be parallel to each other, and the 3rd thermometric pipeline section 404 of temperature tube 400 heats pipeline section 533 with the 3rd of top layer heating tube 530 and can be parallel to each other.
4th thermometric pipeline section 406 of temperature tube 400 is between the 4th heating pipeline section 535 and ring flange 300 of top layer heating tube 530.4th thermometric pipeline section 406 of temperature tube 400 heats pipeline section 535 with the 4th of top layer heating tube 530 and is parallel to each other, and the 4th thermometric pipeline section 406 of temperature tube 400 and the 4th spacing heated between pipeline section 535 of top layer heating tube 530 are less than or equal to 1/5 of inner bag 100 interior diameter.
The courage wall that outlet pipe 200 is fixed on inner bag 100 bottom from it extends straight up, and passes from the central collar aperture that the spiral replication heating pipeline section 536 of top layer heating tube 530 limits.The end of temperature tube 400 can be positioned near spiral replication heating pipeline section 536.
So far, those skilled in the art will recognize that, although multiple exemplary embodiment of the present utility model is illustrate and described herein detailed, but, when not departing from the utility model spirit and scope, still can directly determine or derive other modification many or amendment of meeting the utility model principle according to content disclosed in the utility model.Therefore, scope of the present utility model should be understood and regard as and cover all these other modification or amendments.
Claims (10)
1. an electric heater, comprise for water storage inner bag and to extend in described inner bag the water in described inner bag to be transported to the outlet pipe outside described inner bag, it is characterized in that, also comprise:
Ring flange, is removably fixed on one end of described inner bag;
Temperature tube, it extends in described inner bag from the initiating terminal being installed on described ring flange, the inside bore stretching into described inner bag of the contiguous described outlet pipe of its end.
2. electric heater according to claim 1, is characterized in that,
The projection of inside bore in horizontal plane of described outlet pipe is positioned at the middle part of described inner bag in the projection of horizontal plane.
3. electric heater according to claim 1, is characterized in that,
Distance between the projection in this horizontal plane of the end of the projection in a horizontal plane of the inside bore of described outlet pipe and described temperature tube is less than or equal to 1/6 of described inner bag interior diameter;
Vertical distance between the projection in this perpendicular of the end of the projection in a perpendicular of the inside bore of described outlet pipe and described temperature tube is less than or equal to 1/6 of described inner bag interior diameter.
4. electric heater according to claim 1, is characterized in that,
The end of described temperature tube is lower than the inside bore of described outlet pipe.
5. electric heater according to claim 1, is characterized in that, also comprises:
Top layer heating tube, is configured at least heat the part or all of water of the inside bore of contiguous described outlet pipe.
6. electric heater according to claim 5, is characterized in that,
Initiating terminal and the end of described top layer heating tube are all installed on described ring flange; And described top layer heating tube comprises:
From the initiating terminal of described top layer heating tube in the horizontal direction towards the first heating pipeline section that the other end of described inner bag extends;
From the second heating pipeline section that described first heating pipeline section oliquely downward extends;
The 3rd heating pipeline section extended towards the other end of described inner bag is continued in the horizontal direction from described second heating pipeline section;
From the 4th heating pipeline section that described 3rd heating pipeline section extends upward;
The spiral replication heating pipeline section of inside bore that extend downwards from described 4th heating pipeline section, contiguous described outlet pipe;
From the slender acanthopanax heat pipe section that described spiral replication heating pipeline section extends downwards;
Extend towards described ring flange in the horizontal direction from described slender acanthopanax heat pipe section, to heat with the described 3rd pipeline section concordant the 6th heat pipeline section;
From the 7th heating pipeline section that described 6th heating pipeline section extends obliquely upward; With
From described 7th heating pipeline section continue in the horizontal direction towards described ring flange extend to described top layer heating tube end, to heat with described first pipeline section concordant the 8th heat pipeline section.
7. electric heater according to claim 6, is characterized in that, described temperature tube comprises:
From the initiating terminal of described temperature tube in the horizontal direction towards the first thermometric pipeline section that the other end of described inner bag extends;
From the second thermometric pipeline section that described first thermometric pipeline section oliquely downward extends;
The 3rd thermometric pipeline section extended towards the other end of described inner bag is continued in the horizontal direction from described second thermometric pipeline section; With
The 4th thermometric pipeline section of described temperature tube end is extended to obliquely upward from described 3rd thermometric pipeline section.
8. electric heater according to claim 7, is characterized in that,
4th temperature tube section of described temperature tube is positioned between the 4th heating pipeline section of described top layer heating tube and described ring flange; And
4th thermometric pipeline section of described temperature tube and the 4th of described top layer heating tube the heats pipeline section and is parallel to each other.
9. electric heater according to claim 8, is characterized in that,
First thermometric pipeline section of described temperature tube and the first spacing heated between pipeline section of described top layer heating tube are less than or equal to 1/5 of described inner bag interior diameter;
3rd thermometric pipeline section of described temperature tube and the 3rd spacing heated between pipeline section of described top layer heating tube are less than or equal to 1/5 of described inner bag interior diameter;
4th thermometric pipeline section of described temperature tube and the 4th spacing heated between pipeline section of described top layer heating tube are less than or equal to 1/5 of described inner bag interior diameter.
10. electric heater according to claim 6, is characterized in that,
The courage wall that described outlet pipe is fixed on described inner bag bottom from it extends straight up, and passes from the central collar aperture that the spiral replication heating pipeline section of described top layer heating tube limits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520026028.2U CN204460671U (en) | 2015-01-14 | 2015-01-14 | Electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520026028.2U CN204460671U (en) | 2015-01-14 | 2015-01-14 | Electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204460671U true CN204460671U (en) | 2015-07-08 |
Family
ID=53667544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520026028.2U Active CN204460671U (en) | 2015-01-14 | 2015-01-14 | Electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204460671U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2534878A (en) * | 2015-02-02 | 2016-08-10 | Isis Innovation | Improvements in fluid storage systems |
| CN106705449A (en) * | 2015-11-17 | 2017-05-24 | 青岛经济技术开发区海尔热水器有限公司 | Electric-auxiliary-heating balcony type solar water heater |
| CN109682061A (en) * | 2016-07-14 | 2019-04-26 | 芜湖美的厨卫电器制造有限公司 | Water heater |
| CN109682062A (en) * | 2016-07-14 | 2019-04-26 | 芜湖美的厨卫电器制造有限公司 | Water heater |
| CN109724241A (en) * | 2017-10-30 | 2019-05-07 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its control method |
| CN109724243A (en) * | 2017-10-30 | 2019-05-07 | 芜湖美的厨卫电器制造有限公司 | Multifunctional electric heater |
-
2015
- 2015-01-14 CN CN201520026028.2U patent/CN204460671U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2534878A (en) * | 2015-02-02 | 2016-08-10 | Isis Innovation | Improvements in fluid storage systems |
| CN106705449A (en) * | 2015-11-17 | 2017-05-24 | 青岛经济技术开发区海尔热水器有限公司 | Electric-auxiliary-heating balcony type solar water heater |
| CN109682061A (en) * | 2016-07-14 | 2019-04-26 | 芜湖美的厨卫电器制造有限公司 | Water heater |
| CN109682062A (en) * | 2016-07-14 | 2019-04-26 | 芜湖美的厨卫电器制造有限公司 | Water heater |
| CN109724241A (en) * | 2017-10-30 | 2019-05-07 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its control method |
| CN109724243A (en) * | 2017-10-30 | 2019-05-07 | 芜湖美的厨卫电器制造有限公司 | Multifunctional electric heater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204460671U (en) | Electric heater | |
| CN203731656U (en) | Electric water heater | |
| CN203595264U (en) | Circulating heating type electric water heater | |
| CN105698395B (en) | A kind of water heater moisturizing judgment method | |
| CN202928103U (en) | Water heater and pipe joint thereof | |
| CN201811429U (en) | Air source water heater capable of displaying hot water volume | |
| CN102997428B (en) | Water heater with water saving system | |
| CN101504186B (en) | Energy saving electrical water heater | |
| CN104654559A (en) | Insulation safety type electrical water heater | |
| CN202790888U (en) | Dual-inflowing electric heating faucet | |
| CN111306793A (en) | Wall-mounted stove | |
| CN204153956U (en) | Hot water apparatus | |
| CN104748356A (en) | Double-container-in-container-heat-energy-reaction-cabin rapid-heating electric heater and control method thereof | |
| CN209047921U (en) | A kind of water purifier heating device with burning prevention function | |
| CN201811471U (en) | Water level and water temperature sensor structure for engineering header of solar water heating engineering | |
| CN204593823U (en) | A kind of insulation safety type electric heater | |
| CN205012058U (en) | Washing machine | |
| CN207741172U (en) | A kind of heating installation with remote control function | |
| CN209782988U (en) | Heat storage water tank matched with floor type wall-mounted furnace | |
| CN209978140U (en) | Take overtemperature prote function's bushing type hanging stove | |
| CN201289214Y (en) | Boiler | |
| CN204460747U (en) | A kind of water heater with anti-dry burning device | |
| CN202813815U (en) | Solar water heater with cold water tank and hot water tank | |
| CN205839872U (en) | A kind of intelligent pipe defroster | |
| CN105805951A (en) | Water heater with dry-burning prevention device and judgement method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |