WO2019135472A1 - 가이드부를 구비하는 순간식 온수기 - Google Patents
가이드부를 구비하는 순간식 온수기 Download PDFInfo
- Publication number
- WO2019135472A1 WO2019135472A1 PCT/KR2018/012465 KR2018012465W WO2019135472A1 WO 2019135472 A1 WO2019135472 A1 WO 2019135472A1 KR 2018012465 W KR2018012465 W KR 2018012465W WO 2019135472 A1 WO2019135472 A1 WO 2019135472A1
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- WIPO (PCT)
- Prior art keywords
- plate
- housing
- cover
- guide
- partition
- Prior art date
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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
- 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
-
- 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
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
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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
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
- F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
- F24H1/202—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply with resistances
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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
Definitions
- the present invention relates to a net water heater having a guide portion, and more particularly, to a water heater having a guiding portion for allowing direct water to stay around the heating portion for a long time so that the water can be easily generated as hot water of a set temperature required by a user It is about the net water heater.
- Most of the water heaters used for supplying hot water for showering and washing in the home or office are mainly storing water in the storage tank at all times and using gas or electricity as a heat source.
- These storage water heaters include a storage water heater for storing a certain amount of water in the storage tank for hot water supply and a net water heater for energy efficiency.
- the net water heater is relatively small in size, durable, has a constant flow of hot water, and consumes less energy than a storage water heater.
- a conventional electric water heater includes an outer casing 10, a water storage tank 20 installed inside the outer casing 10, and a heat transfer unit 30 located inside the water storage tank 20 .
- An inflow pipe (21) through which cold water flows and an outflow pipe (23) through which hot water flows out are connected to both lower sides of the water storage tank (20).
- the cold water flowing into the water storage tank 20 through the inlet pipe 21 is heated and converted into hot water through the heat transfer unit 30.
- the hot water flows on the water storage tank 20 by convection of heat, ).
- the heat transfer part 30 is formed in the transverse direction, the hot water converted through the heat transfer part 30 can not contact with the heat transfer part 30 for a long time, Which is lower than the set temperature.
- a portable terminal comprising: a housing having a space formed therein and having an inlet portion and an outlet portion, respectively; A supply pipe connected to the outlet at a lower end thereof in a vertically long shape at the center of the space; A pair of shielding plates arranged to be spaced apart from each other at upper and lower portions of the space and through which the supply pipe is passed; a plurality of shielding plates arranged radially in the inner circumferential direction of the housing around the supply pipe located between the pair of shielding plates; The upper and lower ends of which are vertically connected to a pair of the blocking plates; a blocking member having a guide plate formed between the pair of adjacent partition plates in a direction parallel to the blocking plate; And a heating unit positioned in a space between a pair of adjacent partition plates adjacent to each other and passing through the guide plate, wherein a pair of the blocking plates includes a lower blocking plate positioned at a lower portion, When the direct water is introduced from the inflow portion positioned between the lower end
- the guide plate may include a central portion through which the supply pipe passes and a plurality of protrusions extending along an inner circumferential direction of the housing along an edge of the center portion, Wherein a guide groove is formed concavely to guide the heating portion between a pair of adjacent protruding plates.
- the cover plate may further include a cover tube formed in a cylindrical shape so as to cover an outer periphery of the supply pipe located between the upper shield plate and the lower shield plate.
- the upper end of the cover tube is connected to the upper shield plate
- the inner side of the partition plate facing the cover tube direction is connected to the cover tube and the outer side of the partition plate facing the inner circumferential direction of the housing is connected to the housing
- a plurality of moving guide holes are formed in the upper blocking plate, and a lower through hole is formed in the lower blocking plate, the heating block being inserted into the lower blocking plate, the lower blocking plate being larger than a cross sectional area of the heating portion.
- the upper end of the protrusion is coupled to the upper end of the housing, and the hot water, which is moved between the upper shield plate and the upper end of the housing, Wherein the guide portion is guided to the inside of the supply pipe through the guide portion.
- the upper and lower covers of the housing are opened to cover the open top and the bottom of the housing, respectively.
- a sliding rail is formed on the inner circumference of the housing facing the outside of the partition plate so that the outside of the partition plate is slidably inserted when the partition plate is inserted.
- the upper and lower covers of the housing are opened to cover the open top and the bottom of the housing, respectively.
- an upper latching portion is protruded and formed at a position opposite to the upper outer peripheral edge of the upper shield plate along the periphery of the inner circumference of the housing, And a lower latching portion is protruded and formed to be engaged with the lower shielding plate at a position facing the lower outer circumference of the plate.
- the upper cover and the lower cover are provided so as to cover the open top and the bottom of the housing, respectively, and insertion guide holes are formed at positions facing the heating unit of the bottom cover
- the heating unit includes a plurality of heating tubes positioned in a space between the pair of partition plates and formed in an inverted U shape and a plurality of heating tubes positioned to cover the insertion guide holes,
- the present invention also provides a water heater having a guide portion including a coupling plate.
- the pair of shutoff plates are partitioned into the first space partition and the second space partition, so that the low temperature water remains in the first space partition, And is then changed to the high temperature water while staying in the second space partition, so that the hot water can be generated hot to the user's desired temperature.
- FIG. 1 is a sectional view showing a conventional water heater.
- FIG. 2 is a view showing a net water heater having a guide unit according to a preferred embodiment of the present invention.
- FIG 3 is a view illustrating a state in which a housing of a net water heater having a guide unit according to a preferred embodiment of the present invention is disassembled.
- FIG. 4 is a view for explaining a supply pipe and a blocking member of a net water heater having a guide unit according to a preferred embodiment of the present invention.
- FIG. 5 is a view illustrating a disassembled state water heater having a guide unit according to a preferred embodiment of the present invention.
- FIG. 6 is a view illustrating an interior of a sanitary water heater having a guide unit according to a preferred embodiment of the present invention. Referring to FIG.
- FIG. 7 is a schematic view for explaining the operation of the instantaneous water heater having the guide unit according to the preferred embodiment of the present invention.
- protrusion 212 protrusion 212
- blocking member 310 lower blocking plate
- partition plate 350 guide plate
- heating section 410 heating tube
- FIG. 2 is a view illustrating a water heater having a guide unit according to a preferred embodiment of the present invention.
- FIG. 3 is a view illustrating a state in which a housing of a water heater having a guide unit according to a preferred embodiment of the present invention is disassembled Fig.
- a water heater 1000 having a guide unit includes a housing 100, a supply pipe 200 (shown in FIG. 4), a blocking member 300 And a heating unit 400 (shown in Fig. 5).
- the housing 100 may include a space 112 to accommodate water therein, and may be made of a material that can easily block heat from the outside.
- the housing 100 includes a cylindrical body 110 having a space 112 therein and an upper portion and a lower portion opened, a circular upper cover 130 for watertightly covering an opened upper portion of the body 110, And a circular bottom cover 120 that watertightly covers the open lower portion of the body 110.
- the upper cover 130 may be formed in a bow shape bent upward when the direct water flowing into the main body 110 is generated as hot water so as to easily withstand the expansion pressure caused by the steam that the hot water exhales.
- a protruding guide hole 132 is formed through the upper cover 130 so as to insert the upper end of the protruding portion 210 at a position facing the protruding portion 210 (shown in FIG. 4) described later.
- a through hole 122 is formed at the center of the lower cover 120 so that a supply pipe 200 described later is inserted.
- An insertion guide hole 124 is formed at a position opposite to a coupling hole 312 (shown in FIG. 4) of the lower cover 120 described later.
- An inflow portion 140 is formed in the outer peripheral bottom portion of the main body 110 and an outflow portion 150 is formed in the through hole 122 of the lower cover 120.
- the inflow section 140 is configured such that external water or direct water flows into the space section 112 of the main body 110.
- the inflow section 150 is constructed such that the hot water supplied through the supply pipe 200, As shown in FIG.
- the lower cover 120 may further include a drain (not shown) for rapidly discharging the water contained in the space 112 to the outside due to cleaning, management, or the like.
- FIG. 4 is a view for explaining a supply pipe and a shutoff member of a net water heater having a guide unit according to a preferred embodiment of the present invention.
- FIG. 5 is a schematic view of a net water heater having a guide unit according to a preferred embodiment of the present invention.
- a net water heater 1000 having a guide unit includes a supply pipe 200 to a blocking member 300 to which a supply pipe 200 and a heating unit 400 are coupled, And the heating unit 400 are inserted into the main body 110 of the housing 100.
- the lower end of the supply pipe 200 is connected to the outlet 150 and the upper end of the supply pipe 200 is connected to the upper cover 130.
- a plurality of protrusions 210 protruding in the direction of the upper cover 130 along the upper circumference of the supply pipe 200 and a supply part 212 as an empty space are provided between the pair of adjacent protrusions 210.
- the upper end of the protrusion 210 is inserted into the protrusion guide hole 132 of the upper cover 130.
- the hot water moved between the upper shielding plate 320 and the upper cover 130 to be described later is guided into the supply pipe 200 through the supply part 212 between the adjacent protrusions 210.
- the blocking member 300 includes a blocking plate, a partition plate 340 and a guide plate 350.
- the upper and lower shield plates 320 and 320 are inserted into upper portions of the space portion 112 of the main body 110, And a lower blocking plate 310 inserted into a lower portion of the space 112 of the main body 110.
- the supply pipe 200 integrally penetrates the center of the upper shield plate 320 and the lower shield plate 310.
- the cover plate 330 may be formed as a cylinder to cover the outer circumference of the supply pipe 200 located between the upper shield plate 320 and the lower shield plate 310.
- the upper end of the cover tube 330 is connected to the upper shield plate 320 and the lower end of the cover tube 330 is connected to the lower shield plate 310.
- the partition plate 340 is formed in the shape of a quadrangular plate and has an inner circumferential surface 331a of the cover tube 330 positioned between the upper shield plate 320 and the lower shield plate 310, A plurality of which are arranged in a radial direction.
- the upper and lower ends of the partition plate 340 are vertically connected to the upper and lower blocking plates 320 and 310 and the inside of the partition plate 340 facing the cover pipe 330 is connected to a cover pipe
- the outer side of the partition plate 340 facing the inner peripheral direction of the main body 110 is connected to the inner peripheral edge of the main body 110.
- the guide plate 350 is formed horizontally with the upper shield plate 320 or the lower shield plate 310 between the pair of adjacent partition plates 340.
- the guide plate 350 includes a central portion 352 that forms a center hole 352a through which the supply pipe 200 passes, and a guide portion 350 that extends in the inner circumferential direction of the housing 100 along the rim of the center portion 352 And includes a plurality of stone publications 354.
- a guide groove 356 is formed in a concave shape so as to guide a heating part 400 to be described later between a pair of adjacent stone papers 354 so that the partition plate 340 passes through the stone plate 354 do. Accordingly, the hot water rising from the lower blocking plate 310 to the upper blocking plate 320 is partially blocked by the guide plate 350, and is in contact with the heating unit 400 for a long time. This will be described again in FIG.
- the heating unit 400 heats the direct water flowing into the main body 110 with hot water.
- the heating unit 400 is disposed in a space between the pair of partition plates 340, And a coupling plate 420 which is disposed to cover the insertion guide hole 124 and into which the ends of the plurality of heating pipes 410 are inserted.
- the plurality of heating pipes 410 may be configured to heat one or a plurality of the heating pipes 410 according to the set temperature of the hot water.
- the coupling plate 420 is inserted into the insertion guide hole 124, the heating pipe 410 sequentially passes through the insertion guide hole 124 and the coupling hole 312, And the side of the heating tube 410 is positioned so as to face the guide groove 356 of the guide plate 350.
- FIG. 6 is a view illustrating an interior of a sanitary water heater having a guide unit according to a preferred embodiment of the present invention. Referring to FIG.
- the blocking member 300 is inserted into the space portion 112 through the upper portion of the opened main body 110.
- An upper latching part 116 is protruded from the lower end of the main body 110 so as to catch the upper blocking plate 320 at a position opposite to the upper outer periphery of the upper blocking plate 320,
- a lower latching part 118 is protruded from the lower end of the blocking plate 310 so that the lower blocking plate 310 is engaged.
- the upper latching part 116 is formed to be spaced apart from the inner circumference of the main body 110 and may be configured in a caulking manner.
- the lower engaging portion 118 is formed to protrude in a ring shape along the inner periphery of the main body 110.
- the partitioning plate 340 is inserted into the main body 110 so that the outer side of the partitioning plate 340 is slidably inserted into the inner peripheral edge of the main body 110 facing the outside of the partitioning plate 340, 114 are formed.
- the upper locking part 116, the lower locking part 118, and the sliding rail 114 are formed on the main body 110, so that the blocking member 300 inserted into the main body 110 is inserted into the main body 110 There is an effect of being firmly engaged and guided.
- the heating pipe 410 is positioned between the lower shielding plate 310 and the upper shielding plate 320 through the insertion guide hole 124 and the coupling hole 312, and the coupling plate 420 is positioned between the lower cover 120, respectively.
- FIG. 7 is a schematic view for explaining the operation of the instantaneous water heater having the guide unit according to the preferred embodiment of the present invention.
- a net water heater 1000 having a guide unit includes an inflow pipe 142 installed in an inflow unit 140, A tube 152 is mounted.
- the inflow pipe 142 is supplied with direct water from the outside, and the outflow pipe 152 discharges hot water supplied from the supply pipe 200 to a bathroom or the like.
- a flow rate control valve (not shown) and a flow rate sensor (not shown) are provided in the inflow pipe 142 to control the amount of direct water introduced into the inflow pipe 142 to adjust the supply amount of direct water flowing into the main body 110, The operation of the heating unit 400 can be controlled.
- the outlet pipe 152 is provided with a temperature sensor (not shown) for measuring the temperature of the discharged hot water, thereby controlling the operation of the heating unit 400. Since the flow rate control valve, the flow rate sensor and the temperature sensor have a conventional configuration, a detailed description thereof will be omitted.
- the direct water When direct water is introduced from the inflow pipe 142, the direct water is moved to the space between the lower shielding plate 310 and the lower cover 120, that is, the preparation space partition A1. At this time, the direct water is heated to low temperature by the heating unit 400 located in the preparation space partition A1. The low temperature water is moved to the space between the guide plate 350 and the lower shielding plate 310, that is, the first space dividing section A2, through the coupling hole 312. At this time, the low-temperature water is heated by the heating unit 400 located in the first space dividing section A2 to the medium-temperature water having a temperature higher than the low-temperature water.
- the intermediate water is moved to the space between the guide plate 350 and the upper shield plate 320 through the guide groove 356 of the guide plate 350 or the second space portion 112.
- the direct water is heated by the heating unit 400 located in the second space partition A3 to high temperature water having a temperature higher than the intermediate water.
- the hot water passes through the movement guide hole 322 to the space between the upper shield plate 320 and the upper cover 130, that is, to the supply guide partition A4, 212 to the inside of the supply pipe 200, and then flows out to the outflow portion 150.
- Hot water can be generated at a temperature desired by the user.
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- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
Description
Claims (7)
- 내부에 공간부가 형성되고, 하부에 유입부와 유출부가 각각 형성되는 하우징;상기 공간부의 중앙에 상하 방향으로 긴 관 형상으로 형성되되 하단은 상기 유출부와 연결되는 공급관;상기 공간부의 상부와 하부에 상호 이격되도록 배치되되 상기 공급관이 관통되는 한 쌍의 차단판과, 한 쌍의 상기 차단판 사이에 위치되는 상기 공급관을 중심으로 하여 상기 하우징의 내주연 방향으로 복수 개가 방사상으로 배열되되 상단과 하단은 한 쌍의 상기 차단판과 수직 방향으로 연결되는 구획판과, 상호 인접한 한 쌍의 상기 구획판 사이에 상기 차단판과 수평 방향으로 형성되는 가이드판을 갖는 차단부재; 및상호 인접한 한 쌍의 상기 구획판 사이의 공간에 위치되되 상기 가이드판을 지나가도록 위치되는 가열부를 포함하고,한 쌍의 상기 차단판은 하부에 위치되는 하부차단판과, 상기 하부차단판의 상부에 위치되는 상부차단판을 포함하고, 상기 하우징의 하단과 상기 하부차단판 사이에 위치되는 상기 유입부로부터 직수가 유입되면, 상기 직수는 상기 하부차단판과 상기 가이드판 사이의 제 1 공간구획부 및 상기 가이드판과 상기 상부차단판 사이의 제 2 공간구획부를 차례로 지나면서 온수로 변환된 후 상기 상부차단판과 상기 하우징의 상단 사이에 위치되는 상기 공급관의 상단으로 안내되는 것을 특징으로 하는 가이드부를 구비하는 순간식 온수기.
- 제 1 항에 있어서,상기 가이드판은, 상기 공급관이 관통되는 중심부와, 상기 중심부의 테두리를 따라 상기 하우징의 내주연 방향으로 연장되는 복수 개의 돌출판을 포함하되, 상기 돌출판에 상기 구획판이 관통되도록 구성되고, 상호 인접한 한 쌍의 상기 돌출판 사이에 상기 가열부가 안내되도록 오목하게 안내홈이 형성되는 것을 특징으로 하는 가이드부를 구비하는 순간식 온수기.
- 제 1 항에 있어서,상기 상부차단판과 상기 하부차단판 사이에 위치되는 상기 공급관의 외주연을 커버하도록 원통으로 형성되는 커버관을 더 포함하되, 상기 커버관의 상단은 상기 상부차단판과 연결되고, 상기 커버관의 하단은 상기 하부차단판과 연결되고,상기 커버관 방향을 향하는 상기 구획판의 내측은 상기 커버관과 연결되고, 상기 하우징의 내주연 방향을 향하는 상기 구획판의 외측은 상기 하우징과 연결되고,상기 상부차단판에는 복수 개의 이동안내홀이 형성되고,상기 하부차단판에는 상기 가열부가 삽입되되 가열부의 단면적보다 큰 하부관통공이 형성되는 것을 특징으로 하는 가이드부를 구비하는 순간식 온수기.
- 제 1 항에 있어서,상기 공급관의 상단 둘레를 따라 복수 개의 돌출부가 돌출 형성되되 상기 돌출부의 상단은 상기 하우징의 상단에 결합되고,상기 상부차단판과 상기 하우징의 상단 사이로 이동된 온수는 상호 인접한 상기 돌출부 사이의 공급부를 통하여 상기 공급관 내부로 안내되는 것을 특징으로 하는 가이드부를 구비하는 순간식 온수기.
- 제 1 항에 있어서,상기 하우징의 상부와 하부는 개방되되, 상기 하우징의 개방된 상부와 하부를 각각 커버하도록 상부커버와 하부커버가 구비되고,상기 하우징의 상부 또는 하부가 개방된 상태에서, 상기 하우징 내부로 상기 구획판이 삽입될 때, 상기 구획판의 외측과 마주보는 상기 하우징의 내주연에는 상기 구획판의 외측이 슬라이딩 삽입되도록 슬라이딩레일이 형성되는 것을 특징으로 하는 가이드부를 구비하는 순간식 온수기.
- 제 1 항에 있어서,상기 하우징의 상부와 하부는 개방되되, 상기 하우징의 개방된 상부와 하부를 각각 커버하도록 상부커버와 하부커버가 구비되고,상기 하우징의 상부 또는 하부가 개방된 상태에서, 상기 하우징 내부로 상기 상부차단판과 상기 하부차단판이 삽입되면, 상기 하우징의 내주연의 둘레를 따라, 상기 상부차단판의 상측 외주연과 대향되는 위치에 상기 상부차단판이 걸리도록 상부걸림부가 돌출 형성되고, 상기 하부차단판의 하측 외주연과 대향되는 위치에 상기 하부차단판이 걸리도록 하부걸림부가 돌출 형성되는 것을 특징으로 하는 가이드부를 구비하는 순간식 온수기.
- 제 1 항에 있어서,상기 하우징의 상부와 하부는 개방되되, 상기 하우징의 개방된 상부와 하부를 각각 커버하도록 상부커버와 하부커버가 구비되고,상기 하부커버의 상기 가열부와 마주보는 위치에 삽입안내홀이 형성되고,상기 가열부는, 한 쌍의 상기 구획판 사이의 공간에 위치되되 뒤집어진 U 형상으로 형성되는 복수 개의 가열관과, 상기 삽입안내홀을 덮도록 위치되되 복수 개의 상기 가열관의 단부가 삽입되는 결합판을 포함하는 것을 특징으로 하는 가이드부를 구비하는 순간식 온수기.
Priority Applications (5)
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RU2019138236A RU2745325C1 (ru) | 2018-01-04 | 2018-10-22 | Водонагреватель мгновенного действия с направляющей частью |
DE112018006774.2T DE112018006774T5 (de) | 2018-01-04 | 2018-10-22 | Wasserdurchlauferhitzer mit führungsteil |
GB1916508.3A GB2575948B (en) | 2018-01-04 | 2018-10-22 | Instantaneous water heater having guide part |
CN201880033434.8A CN110709647A (zh) | 2018-01-04 | 2018-10-22 | 具有引导部的瞬间式热水器 |
US16/683,790 US11041662B2 (en) | 2018-01-04 | 2019-11-14 | Instantaneous water heater having guide portion |
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KR1020180001072A KR102031084B1 (ko) | 2018-01-04 | 2018-01-04 | 가이드부를 구비하는 순간식 온수기 |
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KR (1) | KR102031084B1 (ko) |
CN (1) | CN110709647A (ko) |
DE (1) | DE112018006774T5 (ko) |
GB (1) | GB2575948B (ko) |
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2018
- 2018-01-04 KR KR1020180001072A patent/KR102031084B1/ko active IP Right Grant
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- 2018-10-22 RU RU2019138236A patent/RU2745325C1/ru active
- 2018-10-22 GB GB1916508.3A patent/GB2575948B/en active Active
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CN110709647A (zh) | 2020-01-17 |
DE112018006774T5 (de) | 2020-09-17 |
US11041662B2 (en) | 2021-06-22 |
RU2745325C1 (ru) | 2021-03-23 |
GB2575948B (en) | 2021-11-03 |
GB2575948A (en) | 2020-01-29 |
US20200116390A1 (en) | 2020-04-16 |
KR20190083435A (ko) | 2019-07-12 |
KR102031084B1 (ko) | 2019-10-11 |
GB201916508D0 (en) | 2019-12-25 |
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