Classifications

• • 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
• • 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

Definitions

• the invention relates to a fluid heating device. Background technique
• Patent Document 1 As a conventional fluid heating device, a steam boiler that uses heated heat generated by a heat generating device to heat water and generate steam is well known (for example, Patent Document).
• the steam type boiler disclosed in Patent Document 1 has a heat generating device and a heat exchange flow path in which a clean water is supplied in parallel with the heat generating device.
• the heat exchange passage is formed by juxtaposing a plurality of annular pipes that communicate in the circumferential direction in the vertical direction.
• Each of the annular tubes is formed with a plurality of inflow ports and outflow ports in a staggered manner in the circumferential direction.
• the inflow port of the annular pipe communicates with the outflow port of the other annular pipe through the communication pipe.
• the purified water is supplied to the lowermost annular pipe among the plurality of annular pipes arranged in parallel, and flows to the adjacent annular pipe located above it through the communication pipe while performing heat exchange. Finally, the superheated vapor is discharged from the annular tube located at the uppermost layer.
• Patent Document 1 Japanese Laid-Open Patent Publication No. 2001-41668 SUMMARY OF THE INVENTION
• the present invention has been made in view of the above problems, and an object thereof is to provide a fluid heating apparatus capable of improving heat exchange efficiency and miniaturizing a device.
• the fluid heating device of the present invention is a fluid heating device for raising a temperature of a fluid, characterized by comprising a heat generating device and a heat exchange flow path connected to a supply source for supplying the fluid, and causing the fluid to be Heat exchange with heat generated by the heat generating device while flowing inside thereof, the heat exchange flow path being fluidly connected by a portion that communicates in the circumferential direction and has a fluid inlet and a circumferential distance from the fluid inlet at a half circumferential distance a plurality of annular tubes of the mouth are formed in parallel in a layered manner in such a manner that the fluid inlets of the adjacent annular tubes are shifted by a half circumference in the circumferential direction, and the fluid communication port of the annular tube and the adjacent annular tube
• the above fluid inlet is connected by a connecting pipe, and the above The heat device is housed and disposed inside each of the annular tubes.
• the fluid flowing through the inside of the heat exchange passage annular tube comes into contact with the heat generating device housed inside each of the annular tubes, and is heated to raise the temperature.
• the heat generating device since the heat generating device is housed inside the heat exchange passage, the fluid can be brought into contact with the heat generating device to efficiently exchange heat.
• the heat generating device since the heat generating device is housed inside the heat exchange flow path, it is not necessary to separately provide a space for arranging the heat generating device, and it is not necessary to provide a heat insulating case covering the heat generating device and the heat exchange flow path, and the device can be miniaturized. .
• the fluid that has flowed in from the fluid inlet is branched in the annular pipe, and is rotated substantially halfway toward the fluid communication port, and merges and flows into the adjacent annular pipe from the fluid communication port through the communication pipe.
• the fluid that has flowed into the adjacent annular tube branches in the annular tube, and each of them rotates substantially toward the fluid communication port for a half cycle, and then merges and flows out from the fluid communication port.
• the fluid inlets of the annular tubes are disposed differently from each other, it is possible to make the flow path of the fluid as long as possible while miniaturizing the apparatus. Therefore, it is possible to generate a large amount of fluid having superior temperature uniformity by using a miniaturized device.
• the fluid heating device further includes a temperature measuring unit that measures the temperature of the fluid flowing out from the heat exchange passage, and a control unit that controls the heat generation of the heat generating device by the temperature measured by the temperature measuring unit.
• a fluid of a desired temperature can be obtained by PID control.
• the heat transfer channel provides water vapor as the fluid supplied from the supply source. According to the above configuration, it is possible to obtain superheated steam of a desired temperature with less heat than in the case of supplying purified water.
• the heat exchange passage is provided such that the plurality of annular tubes overlap each other in the direction of gravity, and the fluid flows in from the fluid inlet of the annular tube located at the lowest position, and is located at the uppermost portion.
• the fluid communication port of the annular tube flows out.
• the heat generating device has a rod shape, and a plurality of the heat generating devices are provided in a space in the circumferential direction, and the fluid inlet and the fluid communication port are formed in a field corresponding to the interval.
• the heat generating device is symmetrically disposed on a line connecting the fluid inlets and the fluid communication ports of the same annular tube. According to the above configuration, the uniformity of temperature can be further improved.
• the above-mentioned annular pipe of the heat exchange passage has a rectangular shape.
• the heat generating device is a linear electric heater, and the heat generating device is inserted into the inside of the annular tube from an end portion of the annular tube.
• the annular tube and the heat generating device disposed inside the annular tube constitute one unit, and the plurality of units are combined in a layered manner.
• Such a configuration can be realized by the above-described unit, and it is possible to easily form a heat exchange passage having a number of layers suitable for the application.
• Fig. 1 is a block diagram showing the configuration of a fluid heating device of the present embodiment.
• Fig. 2 is a perspective view of the fluid heating device of the embodiment.
• Fig. 3 is a front elevational view of the fluid heating device of the embodiment.
• Fig. 4 is a left side view of the fluid heating device of the embodiment.
• Fig. 5 is a schematic view for explaining the arrangement of an electric heater.
• Fig. 6 is a block diagram for explaining the configuration related to fluid temperature control.
• Fig. 7 is a schematic view for explaining the fluid flow of the heat exchange passage shown in Fig. 2.
• Figure 8 is a perspective view of a fluid control component disposed in a heat exchange flow path.
• Fig. 9 is a schematic view for explaining the arrangement of the fluid control member shown in Fig. 8.
• Fig. 10 is a perspective view showing a modification of the fluid control member.
• Fig. 11 is a schematic view for explaining the arrangement of the fluid control member shown in Fig. 10.
• Fig. 12 is a perspective view showing a modification of the fluid control member.
• the fluid heating device in the present embodiment is a fluid heating device that supplies heat of a heat source to a fluid to increase the temperature of the fluid, such as a fluid heating device suitable for superheating water vapor.
• Fig. 1 is a block diagram showing the configuration of a fluid heating device of the present embodiment.
• the fluid heating device 1 has a heat exchange passage 2 for flowing a fluid through the inside thereof and heating the fluid.
• the inflow side of the heat exchange passage 2 is connected to the fluid supply source 3, so that fluid such as purified water or steam is supplied from the fluid supply source 3 to the heat exchange passage.
• the inside of the heat exchange passage 2 houses the heat generating device 10, and the fluid can be brought into contact with the heat generating device 10 to exchange heat.
• the outflow side of the heat exchange passage 2 is connected to a device or the like which uses superheated steam.
• the fluid heating device 1 has a function of adjusting the temperature of the outflow fluid.
• the fluid heating device 1 has a temperature sensor (temperature measuring unit) 12 that measures the temperature of the fluid, and a control portion 11 that controls the heat generating device 10.
• the temperature sensor 12 measures the temperature of the outflow side of the fluid heating device 1.
• the control unit 11 is connected to the temperature sensor 12 and the heat generating device 10, and the control unit 11 has a function of controlling the amount of heat generated by the heat generating device 10 by the measurement result of the temperature sensor 12.
• FIG. 2 is a perspective view of a fluid heating apparatus according to the present embodiment
• Fig. 3 is a front view of the fluid heating apparatus of the embodiment
• Fig. 4 is a left side view of the fluid heating apparatus of the embodiment.
• the heat exchange flow path 2 of the fluid heating device 1 has a plurality of A cylindrical pipe in which cylindrical pipes are connected in a lattice shape.
• the heat exchange flow path 2 has four annular tubes 20-23.
• the annular tubes 20-23 are connected in the circumferential direction by a welded connection of linear pipes.
• the two main pipes are arranged in parallel in a substantially parallel manner, and a pair of connecting pipes which are substantially perpendicular to the main pipe and the main pipe are welded and connected in a state in which the main pipes are connected to each other.
• the annular tubes 20-23 are each rectangular, and both end portions 20a-23a of the main pipe are formed substantially in line with the end portions of the annular tubes 20-23 (that is, the corner portions of the rectangular annular tubes).
• the annular tubes 20-23 are substantially the same size as each other. Further, in the order of the annular tubes 20, 21, 22, and 23, the annular tubes 20-23 are arranged side by side in the gravity direction from the bottom to the top.
• the piping is formed of, for example, stainless steel.
• one end portion of the linear inflow pipe 40 is connected to the outside of the annular pipe, and a fluid inlet 20b is formed at the joint portion.
• the other end portion 40a of the inflow piping 40 is provided with a flange which functions as a connecting portion connected to the fluid supply source 3.
• the adjacent annular pipe 21 is connected in the direction of gravity.
• the communication pipe 30 is formed with a fluid communication port 20c at the connection portion.
• a fluid inlet 21b is formed at a joint portion of the annular pipe 21 adjacent to the annular pipe 20 and the communication pipe 30. Further, at a position opposite to the fluid inlet 21b at the annular pipe 21, that is, at a distance of a half circumferential distance from the fluid inlet 21b in the circumferential direction of the annular pipe, the adjacent annular pipe 22 is connected in the direction of gravity.
• the communication pipe 31 has a fluid communication port 21c formed at the connection portion.
• a fluid inlet 22b is formed at a joint portion of the annular pipe 22 adjacent to the annular pipe 21 to the communication pipe 31. Further, at a position opposite to the fluid inlet 22b at the annular pipe 22, that is, at a distance of a half circumferential distance from the fluid inlet 22b in the circumferential direction of the annular pipe, the adjacent annular pipe 23 is connected in the direction of gravity.
• the communication pipe 32 is formed with a fluid communication port 22c at the connection portion.
• a fluid inlet 23b is formed at a connection portion of the annular pipe 23 adjacent to the annular pipe 22 to the communication pipe 32. Further, at a position facing the fluid inlet 23b of the annular pipe 23, that is, a portion which is half a circumferential distance from the fluid inlet 23b in the circumferential direction of the annular pipe, one end portion of the linear outflow pipe 41 is annular. The outer side of the tube is connected thereto, and a fluid communication port 23c is formed at the joint portion. Further, the other end of the outflow piping 41 The flange 41a is provided with a flange which functions as a connecting portion connected to a device utilizing superheated steam.
• the respective annular tubes 20-23 are connected to each other by a communication tube 30-32.
• the annular tube 20-23 has fluid inlets 20b-23b and fluid communication ports 20c-23c disposed at a distance of half a circumferential distance from the fluid inlets 20b-23b in the circumferential direction.
• the annular tubes 20-23 are arranged in parallel in a layered manner such that the fluid inlets of the adjacent annular tubes are shifted by half a cycle in the circumferential direction. Further, the fluid flows in from the fluid inlet 20b of the annular pipe 20 located at the lowermost portion, and flows out from the fluid communication port 23c of the uppermost annular pipe 23.
• the fluid pipe 40 is provided with a drain pipe 44 for taking out condensed water (drainage) generated inside the heat exchange passage 2 . Further, a temperature sensor 12a for measuring the temperature of the fluid supplied to the heat exchange passage 2 is attached to the inflow pipe 40. Also, a temperature sensor 12b for measuring the temperature of the fluid flowing out from the heat exchange passage 2 is mounted on the outflow drain pipe 41.
• the heat generating device 10 is a device that generates heat by means of resistance heating or the like, and in the present embodiment, an electric heater is used.
• the electric heater 10 has a terminal portion 10a and a rod-shaped heater heat generating portion 10b.
• the heater heat generating portion 10b of the electric heater 10 is inserted from the opening of the both end portions 20a-23a of the main pipe of the annular pipe 20-23 along the extending direction of the main pipe, and is housed inside the annular pipe 20-23. .
• the openings of the both end portions 20a to 23a of the main pipe of the annular pipe 20-23 are hermetically sealed in a state where the terminal portion 10a of the electric heater 10 is exposed outside the annular pipe.
• the heater heat generating portion 10b of the four electric heaters 10 is inserted into one annular pipe. Sixteen electric heaters 10 are provided in the entire heat exchange flow path 2.
• FIG. 5 is a schematic view showing the arrangement of the electric heater heat generating portion 10b of the electric heater 10 in the annular pipe 22.
• the plurality of heater heat generating portions 10b are provided inside the annular tube 22 with an interval L left in the circumferential direction.
• the interval L is substantially the same as the diameter of the fluid inlet 22b, the diameter of the fluid communication port 22c, the diameter of the communication pipe 31, or the diameter of the communication pipe 32.
• the plurality of heater heat generating portions 10b are symmetrically disposed inside the annular tube 22.
• the heater heat generating portion 10b is symmetrically set with reference to the line X connecting the fluid inlet 22b of the annular tube 22 and the fluid communication port 22c.
• the interval L between the heater heat generating portion 1.0b and the other heater heat generating portion 10b is provided so as to overlap the fluid inlet 22b or the fluid communication port 22c in the gravity direction. That is, the heater heat generating portion 10b is not provided in a region corresponding to the fluid inlet 22b and the fluid communication port 22c (a position overlapping the interval L in the gravity direction), but is provided in a field other than the above-described fields. Thereby, the fluid inlet 22b and the fluid communication port 22c are formed in a region corresponding to the interval L (a region overlapping the interval L in the gravity direction).
• Fig. 6 is a block diagram for explaining the configuration of fluid temperature control.
• the electric heater 10 is connected to the primary power source 13 through a circuit breaker 14 and an SSR (Solid State Relay) 15.
• the SSR 15 is connected to the control unit 11, and the SSR 15 has a switching action of switching the current in accordance with a control signal output from the control unit 11.
• the electric heater 10 is constructed in such a manner that time proportional control can be performed by the SSR 15, which can control its output steplessly.
• the control unit 11 is connected to the primary power source 13 via the circuit breaker 14, and is configured to be capable of controlling the SSR switch in accordance with its output signal.
• the control unit 11 has a function of performing PID control to reach the target temperature, and also has a function of setting an output signal based on the measurement result of the temperature sensor 12b for measuring the fluid flowing out from the heat exchange passage 2 temperature.
• the temperature of the fluid flowing out of the heat exchange passage 2 is measured by the temperature sensor 12b, and then output to the control unit 11, and the target temperature control unit 11 performs PID control, and the output signal is output to the SSR 15, thereby outputting the signal to the SSR 15 .
• the amount of heat generated by the electric heater 15 is adjusted.
• the temperature of the fluid flowing out of the heat exchange passage 2 is controlled to the target temperature.
• Fig. 7 is a schematic view showing the fluid flow of the heat exchange passage 2.
• the looped tubes 20-23 which are arranged in a layered manner are simply indicated by the line segments. Both end portions 20a-23a of the main pipe in the annular pipe 20-23 are indicated by a large black circle, and the connecting portion of the pipe is indicated by a small black circle. Further, the temperature sensor 12b provided on the outflow pipe 41 is indicated by a white circle.
• the fluid is supplied from the fluid supply source 3 to the annular pipe 20 located at the lowermost portion through the inflow pipe 40.
• each of the inside of the annular tube 20 is swirled toward the fluid communication port 20c for substantially half a turn.
• the fluid is heated in contact with each of the heater heat generating portions 10b inserted into the inside of the annular tube 20 from the end portion 20a.
• the heated fluid merges in the fluid communication port 20c, and then flows into the adjacent annular pipe 21 through the communication pipe 30.
• each of the inside of the annular pipe 21 is swirled toward the fluid communication port 21c for substantially half a turn.
• the fluid is heated in contact with each of the heater heat generating portions 10b inserted into the inside of the annular tube 21 from the end portion 21a.
• the heated fluid merges in the fluid communication port 21c, and then flows into the adjacent annular pipe 22 through the communication pipe 31.
• the fluid flowing in from the fluid inlet 22b is branched, and each of the inside of the annular pipe 22 is swirled toward the fluid communication port 22c for substantially half a turn.
• the fluid is heated in contact with each of the heater heat generating portions 10b inserted into the inside of the annular tube 22 from the end portion 22a.
• the heated fluid merges at the fluid communication port 22c, and then flows into the adjacent annular pipe 23 through the communication pipe 32.
• the fluid that has flowed in from the fluid inlet 23b is branched and then swirled toward the fluid communication port 23c for substantially half a circumference inside the annular pipe 23.
• the fluid is heated in contact with each of the heater heat generating portions 10b inserted into the inside of the annular tube 23 from the end portion 23a.
• the heated fluid merges at the fluid communication port 23c, and then flows out through the outflow pipe 41, and the temperature of the fluid flowing out is measured by the temperature sensor 12b.
• the fluid flowing through the annular tubes 20-23 of the heat exchange passage 2 comes into contact with the heater heat generating portion 10b accommodated inside the respective annular tubes 20-23. While being heated, the temperature rises. Since the heater heat generating portion 10b is housed inside the heat exchange passage 2, the fluid can be directly brought into contact with the heater heat generating portion 10b to efficiently exchange heat. Further, since the fluid flowing through the inside of the annular pipe 20-23 can eliminate the temperature unevenness by the splitting method, the uniformity of the fluid temperature can be improved. Also, since the fluid merges in the vicinity of the fluid communication ports 20c-23c, the turbulent flow can be utilized to increase the uniformity of the fluid temperature.
• the fluid supply source 3 supplies water vapor as compared with the case of supplying the purified water, it is possible to obtain the superheated steam of the desired temperature with less heat.
• the heater heat generating portion 10b is housed inside the heat exchange passage 2, it is not necessary to separately provide a space for the heater heat generating portion 10b, and it is not necessary to provide a frame covering the heater heat generating portion 10b and the heat exchange passage 2, This makes it possible to miniaturize the device.
• the fluid inlets 20b to 23b of the annular pipe 20-23 are disposed differently from each other, not only the size of the apparatus can be reduced, but also the flow path of the fluid can be formed as long as possible. Thereby, it is possible to generate a large amount of fluid having superior temperature uniformity by means of a miniaturized device.
• the fluid heating device 1 of the present embodiment has the measurement from the heat exchange flow path 2 Since the control unit 11 that controls the amount of heat generated by the heater heat generating portion 10b is controlled, the fluid of a desired temperature can be obtained by PID control and time proportional control.
• the fluid heating device 1 of the present embodiment since the fluid flows in the order from the lowest annular pipe 20 in the gravity direction toward the uppermost annular pipe 23, the fluid temperature can be further uniformed and located.
• the heat discharged from the lower annular tube heats the annular tube located above, which can maintain the heat preservation effect on the whole device. Thereby, the thermal efficiency can be improved.
• the heater heat generating portion 10b is provided in the circumferential direction of the annular tube 20-23 with the interval L therebetween, it is possible to avoid between the heater heat generating portions 10b. Electrical contact that occurs. Further, since the electric heater heat generating portion 10b can be disposed such that the interval L and the fluid inlets 20b to 23b and the fluid communication ports 20c to 23c are overlapped in the stacking direction, the flow of the fluid to the adjacent annular tubes is not hindered. In the range, the excess portion where the fluid does not come into contact with the heater heat generating portion 10b can be minimized. Therefore, it is possible to further reduce the size of the device and further improve the responsiveness of the temperature control.
• the heater heat generating portion 10b is symmetrically disposed with respect to the line X connecting the fluid inlet and the fluid communication port on the same annular pipe, temperature uniformity can be further improved.
• the drain pipe 20 located at the lowermost portion is provided with the drain pipe 44 for taking out the condensed water generated inside the heat exchange passage 2, so that the fluid is in the ring pipe.
• the drain pipe 44 for taking out the condensed water generated inside the heat exchange passage 2, so that the fluid is in the ring pipe.
• it is also easy to extract the drainage so that the fluid heating device 1 has superior maintainability.
• the annular tubes 20-23 of the heat exchange passage 2 are formed by linear piping connections, and the heater heat generating portion 10b is inserted from the end of the annular tubes 20-23. Since it is provided inside the annular pipe, the fluid heating device 1 can be manufactured by a simple combination without requiring a particularly complicated process.
• the above embodiment is an example of the fluid heating device of the present invention.
• the fluid heating device of the present invention is not limited to the fluid heating device of the above embodiment, and the fluid heating device of the embodiment may be modified or applied to other components without changing the gist of the claims. Form of fluid heating device.
• FIG. 8 is a perspective view of the fluid control member 50 disposed in the heat exchange flow path 2.
• the fluid control member 50 has a substantially plate shape, and its plate surface is substantially a half moon shape.
• the end side of the fluid control member 50 is curved along the inner shape of the annular tube 20-23.
• the fluid control member 50 may be disposed, for example, at a position corresponding to the fluid communication port 20 (23 (in the corresponding position) inside the annular tube 20-23.
• Fig. 9 is a schematic view for explaining the arrangement of the fluid control member 50.
• the fluid control member 50 is aligned with the vertical direction of the direction in which the annular tube 20 extends in the width direction of the plate.
• the form is vertically disposed on the lower side of the fluid communication port 20c inside the annular pipe 20.
• the fluid control member 50 is not limited to a plate member, and may be a member that protrudes into the inside of the annular tube. Other examples of the fluid control member are illustrated in Fig. 12.
• Fig. 10 is a perspective view of the fluid control member 51 disposed in the heat exchange flow path 2. As shown in Fig. 10, the fluid control member 51 is substantially tapered. For example, it may be disposed at a position corresponding to the fluid communication ports 20c to 23c inside the annular tube 20-23.
• the annular tube 20 is disposed will be described as an example for convenience of explanation and understanding. It is a schematic diagram for explaining the arrangement of the fluid control member. As shown in Fig.
• Fig. 12 is a perspective view showing a modification of the fluid control member. As shown in Fig. 12, the fluid control member 52 is substantially conical. The installation position of the fluid control member 52 and the effect thereof are the same as those of the fluid control member 51 described above, and the repeated description thereof is omitted. As described above, the uniformity of the fluid temperature is prioritized over the smooth fluid flow, In order to cause turbulence, it is also possible to provide no fluid control components.
• the heater heat generating portion 10b is inserted into all the both end portions 20a to 23a of the annular pipe 20-23 has been described as an example, but not all of the both end portions 20a-23a may be used.
• the heater heat generating portion 10b is inserted.
• the heat exchange flow is measured by using the temperature sensor 12b
• the temperature of the outflow side of the channel 2 and the case where the amount of heat generated by the electric heater 10 is controlled according to the measurement result is described as an example.
• the temperature of the inflow side of the heat exchange channel 2 can also be measured by the temperature sensor 12a, and according to the measurement As a result, the amount of heat generated by the electric heater is controlled.
• annular pipe 20-23 is formed of a linear pipe and has a rectangular shape
• a ring-shaped pipe formed of a curved pipe and having a circular shape may be used.
• the case where the annular pipe 20-23 is substantially the same size has been described as an example, and it may be constituted by a ring pipe of a different size.
• one unit may be constituted by one annular tube, and the heat exchange passage 2 may be configured by combining the above units in a layered manner.
• a unit may be constituted by a ring pipe and an electric heater 10 inserted into the ring pipe. According to the above configuration, it is possible to easily form a fluid heating device having a number of layers suitable for use.

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• Physics & Mathematics (AREA)
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• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

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• 2010
  • 2010-10-11 WO PCT/CN2010/001586 patent/WO2012048440A1/zh active Application Filing
  • 2010-10-11 CN CN201080069509.1A patent/CN103250007B/zh active Active
  • 2010-10-11 JP JP2013532025A patent/JP5576566B2/ja active Active
• 2013
  • 2013-11-11 HK HK13112606.6A patent/HK1185144A1/zh unknown

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