CN111076413A - Three-phase electric instant water heater - Google Patents
Three-phase electric instant water heater Download PDFInfo
- Publication number
- CN111076413A CN111076413A CN201911416542.6A CN201911416542A CN111076413A CN 111076413 A CN111076413 A CN 111076413A CN 201911416542 A CN201911416542 A CN 201911416542A CN 111076413 A CN111076413 A CN 111076413A
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- China
- Prior art keywords
- shell
- water heater
- fixedly connected
- phase electric
- shaped sheath
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
- F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
- F24H1/103—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance with bare resistances in direct contact with the fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0015—Guiding means in water channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/02—Casings; Cover lids; Ornamental panels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2028—Continuous-flow heaters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention discloses a three-phase electric instant water heater, belonging to the field of water heaters, which comprises a shell, wherein a heating pipe is arranged in the shell, the left end and the right end of the shell are respectively and fixedly connected with a left end cover and a right end cover, the lower end of the shell is fixedly connected with a mounting plate, the inner wall of the shell is fixedly connected with a foaming layer, the mounting plate is connected with a cold water inlet pipe and a hot water outlet pipe, the cold water inlet pipe and the hot water outlet pipe sequentially penetrate through the mounting plate, the shell and the foaming layer and extend into the shell, the outer end of the heating pipe is provided with a U-shaped sheath, the U-shaped sheath is fixedly connected with the inner wall of the shell, the U-shaped sheath comprises a protective bottom part and two transparent end parts, the two transparent end parts are respectively and fixedly, thereby effectively prolonging the service life of the device.
Description
Technical Field
The invention relates to the field of water heaters, in particular to a three-phase electric instant heating type water heater.
Background
The instant electric water heater can quickly heat running water through electronic heating elements, and can control water temperature, flow rate, power and the like through a circuit to enable the water temperature to reach the temperature suitable for bathing of a human body. The heating is started and heated, waiting is not needed, and the heating can be started within a plurality of seconds generally. The instant electric water heater can be classified into the following types: the electric heating device comprises a multi-gear instant heating type electric water heater, a constant-temperature instant heating type electric water heater, a small kitchen appliance, a hand washing appliance, an instant heating type solar energy partner, an electric heating faucet and the like.
The instant electric water heater has higher power generally, can supply hot water with proper temperature only by opening a water tap for several seconds or even reaching the speed of heating for 3 seconds for 1 second to discharge hot water, is very quick and convenient, meets the fast-paced living needs of modern people at present, is very ideal for users needing to supply hot water instantly or for a long time, such as barbershops, hospitals, schools and the like, and most importantly, saves the precious time of people.
Energy and electricity conservation: the instant electric water heater does not need to be preheated in advance, so the heat energy is not dissipated when the instant electric water heater is not preheated, the instant electric water heater is turned on when the instant electric water heater is not used, more water is discharged when the instant electric water heater is used, and the energy consumption of unused residual hot water which is heated by a water storage type water heater is avoided, so that the purposes of saving energy, saving electricity and saving water are really achieved. Generally, the instant electric water heater saves electricity by 15 to 30 percent compared with the traditional electric water heater. So the country divides the products into energy-saving products. Under the condition of water and electricity shortage, the important popularization of the product undoubtedly has very practical significance. The method is also a factor which is considered in the selection of the instant electric water heater by the consumers.
Safety and environmental protection: for electric water heater products, people are worried about safety. The instant electric water heater is designed to fully ensure the application safety of consumers, and generally focuses on the aspect, for example, measures such as a non-metal heating body, a water and electricity isolation technology, an electric leakage protection device, a grounding protection and the like are adopted, and products of some manufacturers are also provided with various functions such as a water control switch, an audible and visual alarm, a patent circuit, a magnetization antiscale function, an over-temperature power failure function, a high-voltage discharge function, an electronic regulation function, a temperature display function, a stepped power function and the like, so that multiple protection is achieved, and in order to achieve the purpose of achieving the safety without any loss, each manufacturer of the instant electric water heater takes care and is provided with sufficient. Meanwhile, products of regular manufacturers are subjected to national mandatory certification (3C certification), so that the safety is extremely high.
The volume is small: the instant electric water heater does not need to be preheated in advance, so that a large and heavy inner container water storage tank and an insulating layer are not needed in design, and most of the instant electric water heaters are small in size, light in weight, easy to install, space-saving and material-saving. In addition, high-grade products in the instant electric water heater are mainly humanized in design, streamline in appearance, noble and elegant, and popular with fashionable people.
The water temperature is constant: the water storage type water heater needs to be put with water to adjust the temperature when bathing is started due to the fact that the water is preheated in advance, the water temperature is either cold or hot, even if the temperature is adjusted, the temperature of water used for a long time in the using process can become cold, and fine adjustment cannot be performed at any time, and the water storage type water heater is troublesome. The instant electric water heater can keep constant temperature and constant current after the water temperature is adjusted initially no matter how many people take a bath, and the bath is fresh and comfortable.
When the existing water heater is used, cold water, particularly water in winter, directly enters the water heater, cold water flow has certain impact, so that the cold water flow is easily and directly sprayed on a heating pipe, the temperature difference on the surface of the heating pipe is too large, the heating pipe is extremely easy to damage or even break, and the service life is shortened.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a three-phase electric instant water heater which can effectively avoid the phenomenon that a heating pipe generates cold water shock, and further effectively prolong the service life of the water heater.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The three-phase electric instant heating type water heater comprises a shell, a heating pipe is arranged in the shell, the left end cover and the right end cover are respectively and fixedly connected with the left end and the right end of the shell, the lower end of the shell is fixedly connected with a mounting plate, the inner wall of the shell is fixedly connected with a foaming layer, the mounting plate is connected with a cold water inlet pipe and a hot water outlet pipe, the cold water inlet pipe and the hot water outlet pipe sequentially penetrate through the mounting plate, the shell and the foaming layer and extend to the interior of the shell, the outer end of the heating pipe is provided with a U-shaped sheath which is fixedly connected with the inner wall of the shell, the U-shaped sheath comprises a protective bottom part positioned at the lower side and two through end parts, the two through end parts are respectively and fixedly connected with the two end parts of the protective bottom part, and the through end parts are positioned under the heating pipe, the phenomenon that the heating pipe generates cold water shock can be effectively avoided, and the service life of the heating pipe is further effectively prolonged.
Further, the protection bottom is solid construction for the protection bottom can block cold water from bottom to top, effectively avoids cold water direct and heating pipe contact, and then effectively guarantees that the heating pipe is difficult to be swashed by cold water, and then effectively reduces the near difference in temperature of heating pipe, reduces the impaired possibility of heating pipe, penetrating tip is network structure, makes it can not influence the convection current of its water.
Furthermore, a rough layer is arranged on the lower end face of the protective bottom.
Further, the laser instrument is installed to protection bottom lower extreme, light sensor is installed to the bottom end in the shell, light sensor and laser instrument phase-match.
Furthermore, the lower end of the U-shaped sheath is rotatably connected with a propeller, the propeller is positioned right above the cold water inlet pipe, and the propeller is positioned on the left side of the laser.
Furthermore, the propeller is of a spiral structure, and the distance between the propeller and the cold water inlet pipe is 5-10 cm.
Furthermore, the outer end of the U-shaped sheath is fixedly connected with a connecting sub-rod, the right inner wall of the shell is fixedly connected with a connecting female rod, and the connecting female rod and the connecting sub-rod are matched with each other.
Furthermore, the female connecting rod and the male connecting rod are both made of magnetic structures, and the magnetic poles of the two ends close to each other are opposite.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme can effectively avoid cold water shock generated by the heating pipe, and further effectively prolong the service life of the heating pipe.
(2) The protection bottom is solid construction for the protection bottom can block cold water from bottom to top, effectively avoids cold water direct and heating pipe contact, and then effectively guarantees that the heating pipe is difficult to be swashed by cold water, and then effectively reduces the near difference in temperature of heating pipe, reduces the impaired possibility of heating pipe, and penetrating tip is network structure, makes it can not influence the convection current of its water.
(3) The lower end face of the protection bottom is provided with a rough layer.
(4) The laser instrument is installed to protection bottom lower extreme, and light sensor is installed to the bottom end in the shell, and light sensor and laser instrument phase-match.
(5) The lower end of the U-shaped sheath is rotatably connected with a propeller, the propeller is positioned right above the cold water inlet pipe, and the propeller is positioned on the left side of the laser.
(6) The propeller is of a spiral structure, and the distance between the propeller and the cold water inlet pipe is 5-10 cm.
(7) The outer end of the U-shaped sheath is fixedly connected with a connecting sub-rod, the right inner wall of the shell is fixedly connected with a connecting female rod, and the connecting female rod and the connecting sub-rod are matched with each other.
(8) The female connecting rod and the male connecting rod are both made of magnetic structures, and the magnetic poles of the two ends close to each other are opposite.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic structural diagram of the front side of the present invention;
FIG. 3 is a perspective view of the U-shaped sheath of the present invention;
fig. 4 is a schematic structural view of the front face of the U-shaped sheath of the present invention.
The reference numbers in the figures illustrate:
the device comprises a shell 1, a left end cover 21, a right end cover 22, a heating pipe 3, a foaming layer 4, a cold water inlet pipe 51, a hot water outlet pipe 52, a propeller 6, a female connecting rod 71, a male connecting rod 72, a U-shaped sheath 8, a protective bottom 81, a through end 82, a mounting plate 9, a light sensor 10 and a laser 11.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-4, the three-phase electric instant water heater comprises a shell (1), a heating pipe (3) is installed inside the shell (1), a left end cover (21) and a right end cover (22) are respectively and fixedly connected to the left end and the right end of the shell (1), a mounting plate (9) is fixedly connected to the lower end of the shell (1), a foaming layer (4) is fixedly connected to the inner wall of the shell (1), a cold water inlet pipe (51) and a hot water outlet pipe (52) are connected to the mounting plate (9), the cold water inlet pipe (51) and the hot water outlet pipe (52) sequentially penetrate through the mounting plate (9), the shell (1) and the foaming layer (4) and extend into the shell (1), a U-shaped sheath (8) is arranged at the outer end of the heating pipe (3), the U-shaped sheath (8) is fixedly connected to the inner wall of the shell (1), and the U-shaped sheath (8) comprises, two penetrating tip (82) fixed connection is respectively at two tip of protection bottom (81), and penetrating tip (82) are located heating pipe (3) under, protection bottom (81) are solid construction for protection bottom (81) can block cold water from bottom to top, effectively avoid cold water direct and heating pipe (3) contact, and then effectively guarantee that heating pipe (3) are difficult for being swashed by cold water, and then effectively reduce near the difference in temperature of heating pipe (3), reduce the damaged possibility of heating pipe (3), penetrating tip (82) are network structure, make it can not influence the convection current of its water.
The end face is provided with rough layer under protection bottom (81), laser instrument (11) are installed to protection bottom (81) lower extreme, light sensor (10) are installed to bottom in shell (1), light sensor (10) and laser instrument (11) phase-match, U-shaped sheath (8) lower extreme rotates and is connected with screw (6), screw (6) are located cold water inlet tube (51) directly over, and screw (6) are located laser instrument (11) left side, screw (6) are helical structure, and the distance between screw (6) and cold water inlet tube (51) is 5-10cm, U-shaped sheath (8) outer end fixedly connected with connects sub-pole (72), shell (1) right inner wall fixedly connected with connects female pole (71), connect female pole (71) and connect sub-pole (72) and match each other, after long-time use, the U-shaped sheath (8) is corroded at the joint of the shell (1), and the female connecting rod (71) and the male connecting rod (72) are adsorbed, so that the U-shaped sheath (8) can still be kept in the original position, the damage to the water heater caused by the corrosion falling is effectively avoided, the female connecting rod (71) and the male connecting rod (72) are both made of magnetic structures, and the magnetic poles of the two ends close to each other are opposite.
When the water heater is used, after cold water enters the shell (1) through the cold water inlet pipe (51), the cold water flow drives the propeller (6) to rotate, and then the cold water flow is dispersed, the convection between the cold water flow and original water in the shell (1) is accelerated, the dispersed water flow is shunted to two sides under the blocking of the protection bottom (81), so that the cold water flow is effectively prevented from being directly contacted with the heating pipe (3), the heating pipe (3) is effectively protected from being damaged, the service life is prolonged, meanwhile, a rough layer under the protection bottom (81) can be used for guiding scale in the cold water to be adhered to the rough layer, the probability that the scale is adhered to the heating pipe (3) is reduced, the heating pipe (3) is further protected from being damaged, and after the scale is too thick, the intensity of light received by the light sensor (10) from the laser (11) is weakened, and the light sensor (10) can feed back the, and then can in time carry out the clearance of incrustation scale for the life extension of this water heater.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (8)
1. Three-phase electric instant heating type water heater, including shell (1), shell (1) internally mounted has heating pipe (3), its characterized in that: the improved water heater is characterized in that the left end and the right end of the shell (1) are respectively fixedly connected with a left end cover (21) and a right end cover (22), the lower end of the shell (1) is fixedly connected with a mounting plate (9), the inner wall of the shell (1) is fixedly connected with a foaming layer (4), the mounting plate (9) is connected with a cold water inlet pipe (51) and a hot water outlet pipe (52), the cold water inlet pipe (51) and the hot water outlet pipe (52) sequentially penetrate through the mounting plate (9), the shell (1) and the foaming layer (4) and extend into the shell (1), the outer end of the heating pipe (3) is provided with a U-shaped sheath (8), the U-shaped sheath (8) is fixedly connected with the inner wall of the shell (1), the U-shaped sheath (8) comprises a protection bottom (81) and two penetrating end parts (82) which are positioned on the lower side, and the through end part (82) is positioned right below the heating pipe (3).
2. The three-phase electric tankless water heater of claim 1, further comprising: the protection bottom (81) is of a solid structure, and the through end (82) is of a net structure.
3. The three-phase electric tankless water heater of claim 2, further comprising: the lower end face of the protection bottom (81) is provided with a rough layer.
4. The three-phase electric tankless water heater of claim 3, further comprising: laser instrument (11) are installed to protection bottom (81) lower extreme, light sensor (10) are installed to bottom in shell (1), light sensor (10) and laser instrument (11) phase-match.
5. The three-phase electric tankless water heater of claim 1, further comprising: the lower end of the U-shaped sheath (8) is rotatably connected with a propeller (6), the propeller (6) is located right above the cold water inlet pipe (51), and the propeller (6) is located on the left side of the laser (11).
6. The three-phase electric tankless water heater of claim 5, further comprising: the propeller (6) is of a spiral structure, and the distance between the propeller (6) and the cold water inlet pipe (51) is 5-10 cm.
7. The three-phase electric tankless water heater of claim 1, further comprising: the U-shaped sheath (8) outer end fixedly connected with connects son pole (72), shell (1) right inner wall fixedly connected with connects female pole (71), connect female pole (71) and connect son pole (72) and match each other.
8. The three-phase electric tankless water heater of claim 7, further comprising: the female connecting rod (71) and the secondary connecting rod (72) are both made of magnetic structures, and the magnetic poles of the two ends close to each other are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911416542.6A CN111076413B (en) | 2019-12-31 | 2019-12-31 | Three-phase electric instant water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911416542.6A CN111076413B (en) | 2019-12-31 | 2019-12-31 | Three-phase electric instant water heater |
Publications (2)
| Publication Number | Publication Date |
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| CN111076413A true CN111076413A (en) | 2020-04-28 |
| CN111076413B CN111076413B (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911416542.6A Active CN111076413B (en) | 2019-12-31 | 2019-12-31 | Three-phase electric instant water heater |
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| Country | Link |
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| CN (1) | CN111076413B (en) |
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| CN203572032U (en) * | 2013-11-15 | 2014-04-30 | 杨勇 | Inner container of instant electric water heater |
| CN204513746U (en) * | 2015-03-10 | 2015-07-29 | 陶仁华 | A kind of storage-type electric water heater |
| CN205261898U (en) * | 2015-11-25 | 2016-05-25 | 广东戴思乐泳池装备有限公司 | Electric heater |
| CN207865705U (en) * | 2017-12-23 | 2018-09-14 | 董许亮 | A kind of boiler plant of efficient thermal cycle |
| CN208312683U (en) * | 2018-05-10 | 2019-01-01 | 宁波易能智能技术有限公司 | A kind of Electrothermic water heater |
| CN109425101A (en) * | 2017-08-24 | 2019-03-05 | 江苏威能电气有限公司 | A kind of high precision measuring temperature electric heater |
| CN109442746A (en) * | 2018-08-30 | 2019-03-08 | 芜湖鸣人热能设备有限公司 | A kind of boiler that can monitor scale forming |
| CN109595817A (en) * | 2018-10-17 | 2019-04-09 | 中山市恒乐电器有限公司 | A kind of energy saver on water heater |
| CN109682060A (en) * | 2017-10-19 | 2019-04-26 | 潜江市尚娟贸易有限公司 | A kind of Horizontal type water-storing electric water heater device |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3715566A (en) * | 1972-01-24 | 1973-02-06 | Smith Corp A | Corrosion guard system for electric water heater |
| CN101166380A (en) * | 2007-10-15 | 2008-04-23 | 奥特朗电器（广州）有限公司 | A tube type heater for electric water heater |
| CN102012094A (en) * | 2009-09-04 | 2011-04-13 | 博西华电器（江苏）有限公司 | Water heater |
| CN201935367U (en) * | 2011-01-18 | 2011-08-17 | 詹丽华 | Horizontal type water-storing electric water heater |
| CN203572032U (en) * | 2013-11-15 | 2014-04-30 | 杨勇 | Inner container of instant electric water heater |
| CN204513746U (en) * | 2015-03-10 | 2015-07-29 | 陶仁华 | A kind of storage-type electric water heater |
| CN205261898U (en) * | 2015-11-25 | 2016-05-25 | 广东戴思乐泳池装备有限公司 | Electric heater |
| CN109425101A (en) * | 2017-08-24 | 2019-03-05 | 江苏威能电气有限公司 | A kind of high precision measuring temperature electric heater |
| CN109682060A (en) * | 2017-10-19 | 2019-04-26 | 潜江市尚娟贸易有限公司 | A kind of Horizontal type water-storing electric water heater device |
| CN207865705U (en) * | 2017-12-23 | 2018-09-14 | 董许亮 | A kind of boiler plant of efficient thermal cycle |
| CN208312683U (en) * | 2018-05-10 | 2019-01-01 | 宁波易能智能技术有限公司 | A kind of Electrothermic water heater |
| CN109442746A (en) * | 2018-08-30 | 2019-03-08 | 芜湖鸣人热能设备有限公司 | A kind of boiler that can monitor scale forming |
| CN109595817A (en) * | 2018-10-17 | 2019-04-09 | 中山市恒乐电器有限公司 | A kind of energy saver on water heater |
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| Publication number | Publication date |
|---|---|
| CN111076413B (en) | 2021-07-06 |
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